AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JANUARY 24, 1997
REGISTRATION NO. 333-15553


SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549


AMENDMENT NO. 3
TO
FORM S-11
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933


KILROY REALTY CORPORATION
(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS GOVERNING INSTRUMENTS)

2250 EAST IMPERIAL HIGHWAY
EL SEGUNDO, CALIFORNIA 90245
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES, INCLUDING ZIP CODE)


JOHN B. KILROY, JR.
PRESIDENT AND CHIEF EXECUTIVE OFFICER
KILROY REALTY CORPORATION
2250 EAST IMPERIAL HIGHWAY
EL SEGUNDO, CALIFORNIA 90245
(NAME AND ADDRESS OF AGENT FOR SERVICE)


COPIES TO:

EDWARD SONNENSCHEIN, JR., ESQ.             LYNN TOBY FISHER, ESQ.
       LATHAM & WATKINS                KAYE, SCHOLER, FIERMAN, HAYS &
     633 WEST FIFTH STREET                      HANDLER, LLP
 LOS ANGELES, CALIFORNIA 90071                 425 PARK AVENUE
        (213) 485-1234                    NEW YORK, NEW YORK 10022
                                               (212) 836-8000

                           ----------------

APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as

practicable after the effective date of this Registration Statement.

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]

If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box. [_]


THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(a) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.




CROSS REFERENCE SHEET

      FORM S-11 ITEM NO. AND HEADING             LOCATION OR HEADING IN PROSPECTUS
      ------------------------------             ---------------------------------
 1. Forepart of Registration Statement and
     Outside Front Cover Page of
     Prospectus............................ Outside Front Cover Page

 2. Inside Front and Outside Back Cover
     Pages of Prospectus................... Inside Front Cover Page; Outside Back Cover
                                             Page

 3. Summary Information, Risk Factors and
     Ratio of Earnings to Fixed Charges.... Prospectus Summary; Risk Factors;
                                             Distribution
                                             Policy; Business and Properties; Certain
                                             Relationships and Related Transactions

 4. Determination of Offering Price........ Underwriting

 5. Dilution............................... Dilution

 6. Selling Security Holders............... Not applicable

 7. Plan of Distribution................... Underwriting

 8. Use of Proceeds........................ Use of Proceeds

 9. Selected Financial Data................ Selected Financial Data

10. Management's Discussion and Analysis of
     Financial Condition and Results of
     Operations............................ Management's Discussion and Analysis of
                                             Financial Condition and Results of
                                             Operations

11. General Information as to Registrant... Prospectus Summary; Business and
                                             Properties;
                                             Management; Principal Stockholders;
                                             Certain
                                             Provisions of Maryland Law and of the
                                             Company's Articles of Incorporation and
                                             Bylaws

12. Policy with Respect to Certain
     Activities............................ Policies With Respect to Certain Activities

13. Investment Policies of Registrant...... Policies With Respect to Certain Activities

14. Description of Real Estate............. Management's Discussion and Analysis of
                                             Financial Condition and Results of
                                             Operations; Business and Properties

15. Operating Data......................... Business and Properties

16. Tax Treatment of Registrant and Its
     Security-Holders...................... Federal Income Tax Consequences

17. Market Price of and Dividends on the
     Registrant's Common Equity and Related
     Stockholder Matters................... Risk Factors; Principal Stockholders;
                                             Distribution Policy; Shares Available for
                                             Future Sale

18. Description of Registrant's
     Securities............................ Description of Capital Stock; Certain
                                             Provisions of Maryland Law and of the
                                             Company's Articles of Incorporation and
                                             Bylaws

19. Legal Proceedings...................... Business and Properties--Legal Proceedings

20. Security Ownership of Certain
     Beneficial Owners and Management...... Principal Stockholders

21. Directors and Executive Officers....... Management

22. Executive Compensation................. Management

23. Certain Relationships and Related
     Transactions.......................... Risk Factors; Business and Properties;
                                             Management; Certain Relationships and
                                             Related Transactions; Principal
                                             Stockholders


      FORM S-11 ITEM NO. AND HEADING             LOCATION OR HEADING IN PROSPECTUS
      ------------------------------             ---------------------------------
24. Selection, Management and Custody of
     Registrant's Investments.............. Risk Factors; Business and Properties;
                                             Policies With Respect to Certain
                                             Activities

25. Policies with Respect to Certain
     Transactions.......................... Risk Factors; Business and Properties;
                                             Policies With Respect to Certain
                                             Activities; Management; Certain
                                             Relationships and Related Transactions;
                                             Principal Stockholders

26. Limitations of Liability............... Management; Certain Provisions of Maryland
                                             Law and of the Company's Articles of
                                             Incorporation and Bylaws

27. Financial Statements and Information... Index to Financial Statements

28. Interests of Named Experts and
     Counsel............................... Not Applicable

29. Disclosure of Commission Position on
     Indemnification for Securities Act
     Liabilities........................... Not Applicable


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

+INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A         +
+REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE   +
+SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY  +
+OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT        +
+BECOMES EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR   +
+THE SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE      +
+SECURITIES IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE    +
+UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF  +
+ANY SUCH STATE.                                                               +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

               SUBJECT TO COMPLETION--DATED JANUARY  , 1997
PROSPECTUS
- --------------------------------------------------------------------------------

                               11,300,000 Shares
                           KILROY REALTY CORPORATION
                                  Common Stock

[LOGO OF KILROY REALTY CORPORATION]

Kilroy Realty Corporation (the "Company") has been formed to succeed to the business of Kilroy Industries and its affiliates consisting principally of a portfolio of Class A suburban office and industrial buildings in prime locations, primarily in Southern California, and the affiliated real estate ownership, acquisition, development, leasing and management businesses which were established in Southern California in 1947. Upon the consummation of this offering (the "Offering") and a series of related transactions (the "Formation Transactions"), the Company will own 14 suburban office buildings (the "Office Properties"), 11 of which are located in Southern California, and 12 industrial properties (the "Industrial Properties"), 11 of which are located in Southern California. The Company will operate as a self-administered and self-managed real estate investment trust (a "REIT"). The Company intends to make regular quarterly distributions to its stockholders beginning with a distribution for the period ending March 31, 1997.

All of the shares of common stock of the Company, par value $.01 per share (the "Common Stock"), offered hereby are being sold by the Company and will represent approximately 80.4% of all shares of Common Stock (or interests exchangeable therefor) outstanding after consummation of the Offering. Upon consummation of the Offering, the Company's officers and directors (and certain of their affiliates) will own in the aggregate 19.6% of the Common Stock or interests exchangeable therefor. See "Principal Stockholders." To assist the Company in maintaining its qualification as a REIT for federal income tax purposes, ownership by any person generally is limited to 7.0% of the then outstanding Common Stock, which limit can be waived by the Board of Directors.

Prior to the Offering, there has been no public market for the Common Stock of the Company. It is currently anticipated that the initial public offering price will be between $19.00 and $21.00 per share. See "Underwriting" for a discussion of the factors to be considered in determining the initial public offering price. The shares of Common Stock offered hereby have been approved for listing on the New York Stock Exchange (the "NYSE") under the symbol "KRC," subject to official notice of issuance. See "Glossary" beginning on page 163 for definitions of certain terms used in this Prospectus.

See "Risk Factors" on pages 20 to 35 for a discussion of certain material factors which should be considered in connection with an investment in the Common Stock offered hereby, including:

. Conflicts of interest with, and material benefits to, affiliates of the Company, including certain officers and directors, in connection with the Formation Transactions, consummation of the Offering and the operation of the Company's ongoing businesses, including conflicts associated with the tax consequences of sales and refinancings of the Company's properties.

. Taxation of the Company as a corporation if it fails to qualify as a REIT for federal income tax purposes and the resulting decreases in cash available for distribution.

. The inability of the Company to control the operations of the Services Company, which could result in decisions that do not reflect the Company's interest.

. The valuation of the Company's properties was not based on third-party appraisals, and the consideration to be paid by the Company for the properties may exceed their aggregate fair market value, thereby increasing the risk that the aggregate market value of the Common Stock may exceed the Company's total assets.

. A portion of the Company's anticipated cash flow may be generated from development activities which are partially dependent on the availability of development opportunities, and are subject to the risks inherent with development, which in turn may negatively impact the Company's ability to make distributions.

. Dependence on demand for office, industrial and retail space in the Southern California market, thereby increasing the risk that the Company will be materially adversely affected by general economic conditions in a single market.

. Dependence on certain significant tenants, particularly Hughes Electronic Corporation's Space & Communications Company, thereby increasing the potential negative impact to the Company of downturns in the business of, or its relationship with, such tenants.

. The distribution requirements of REITs may limit the Company's ability to finance future developments, acquisitions and expansions without additional debt or equity financing necessary to achieve the Company's business plan, which in turn may adversely affect the price of the Company's Common Stock.

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
ANDEXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THESECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSIONPASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


                                               Underwriting
                             Price to          Discounts and        Proceeds to
                              Public          Commissions(1)        Company(2)
- -------------------------------------------------------------------------------
Per Share.............         $                   $                   $
- -------------------------------------------------------------------------------
Total(3)..............        $                   $                   $



(1) The Company has agreed to indemnify the several Underwriters against certain liabilities, including liabilities under the Securities Act of 1933. See "Underwriting."
(2) Before deducting expenses of the Offering payable by the Company estimated at $ .
(3) The Company has granted the several Underwriters a 30-day over-allotment option to purchase up to 1,695,000 additional shares of Common Stock on the same terms and conditions as set forth above. If all such additional shares are purchased by the Underwriters, the total Price to Public will be $ , the total Underwriting Discounts and Commissions will be $ and the total Proceeds to Company will be $ . See "Underwriting."

The shares of Common Stock are offered by the several Underwriters subject to delivery by the Company and acceptance by the Underwriters, to prior sale and to withdrawal, cancellation or modification of the offer without notice. Delivery of the shares to the Underwriters is expected to be made at the office of Prudential Securities Incorporated, One New York Plaza, New York, New York, on or about , 1997.

PRUDENTIAL SECURITIES INCORPORATED

DONALDSON, LUFKIN & JENRETTE
SECURITIES CORPORATION

J.P. MORGAN & CO.
, 1997 SMITH BARNEY INC.


IN CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVERALLOT OR EFFECT TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK AT A LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET. SUCH TRANSACTIONS MAY BE EFFECTED ON THE NEW YORK STOCK EXCHANGE, IN THE OVER-THE-COUNTER MARKET OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.

THE ATTORNEY GENERAL OF THE STATE OF NEW YORK HAS NOT PASSED ON OR ENDORSED

THE MERITS OF THIS OFFERING. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.


TABLE OF CONTENTS

                                                                          PAGE
                                                                          ----
PROSPECTUS SUMMARY........................................................   1
The Company...............................................................   1
Risk Factors..............................................................   3
Formation and Structure of the Company....................................   5
Formation of Kilroy Services, Inc. .......................................   9
Growth Strategies.........................................................  10
The Office and Industrial Properties......................................  13
The Company's Southern California Submarkets..............................  15
The Financing.............................................................  15
Distribution Policy.......................................................  16
Tax Status of the Company.................................................  17
The Offering..............................................................  17
Summary Financial Data....................................................  18
RISK FACTORS..............................................................  20
Conflicts of Interest.....................................................  20
Adverse Consequences of Failure to Qualify as a REIT......................  22
Risks of Development Business and Related Activities Being Conducted by
 the Services Company.....................................................  23
No Appraisals; Consideration to be Paid for Properties and Other Assets
 May Exceed their Fair Market Value.......................................  23
Cash Flow from Development Activities is Uncertain........................  24
Dependence on Southern California Market..................................  24
Dependence on Significant Tenants.........................................  24
Distributions to Stockholders Affected by Many Factors....................  25
Real Estate Investment Considerations.....................................  25
Real Estate Financing Risks...............................................  28
Changes in Investment and Financing Policies Without Stockholder Vote.....  28
Risk of Operations Conducted Through the Operating Partnership............  29
Influence of Certain Continuing Investors.................................  29
Limits on Ownership and Change in Control.................................  30
Dependence on Key Personnel...............................................  31
Distribution Payout Percentage............................................  31
Historical Operating Losses of the Office and Industrial Properties.......  31
No Limitation on Debt.....................................................  31
Government Regulations....................................................  32
Immediate and Substantial Dilution........................................  33
No Prior Public Market....................................................  34
Effect of Market Interest Rates on Price of Common Stock..................  34

                                                                          PAGE
                                                                          ----
Shares Available for Future Sale..........................................  34
FORMATION AND STRUCTURE OF THE COMPANY....................................  36
Formation Transactions....................................................  36
Reasons for the Reorganization of the Company.............................  38
Comparison of Common Stock and Units......................................  40
Advantages and Disadvantages of the Formation Transactions to Unaffiliated
 Stockholders.............................................................  41
Benefits of the Formation Transactions to the Continuing Investors........  41
Determination and Valuation of Ownership Interests........................  43
Allocation of Consideration in the Formation Transactions.................  43
FORMATION OF KILROY SERVICES, INC. .......................................  44
THE COMPANY...............................................................  45
General...................................................................  45
Growth Strategies.........................................................  47
USE OF PROCEEDS...........................................................  51
DISTRIBUTION POLICY.......................................................  53
CAPITALIZATION............................................................  58
DILUTION..................................................................  59
SELECTED FINANCIAL DATA...................................................  60
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
 OPERATIONS...............................................................  62
Results of Operations.....................................................  62
Development and Management Fees...........................................  64
Adoption of SFAS No. 121..................................................  64
Liquidity and Capital Resources...........................................  65
Historical Cash Flows.....................................................  66
Funds from Operations.....................................................  67
Inflation.................................................................  67
BUSINESS AND PROPERTIES...................................................  68
General...................................................................  68
Occupancy and Rental Information..........................................  75
Lease Expirations.........................................................  75
Tenant Information........................................................  83
Office Properties.........................................................  84
Industrial Properties.....................................................  91
Development, Leasing and Management Activities............................  91
Acquisition Properties....................................................  93
The Company's Southern California Submarkets..............................  94

i

TABLE OF CONTENTS--(CONTINUED)

                                                                          PAGE
                                                                          ----
Seattle Market............................................................ 105
Excluded Properties....................................................... 105
Insurance................................................................. 107
Uninsured Losses from Seismic Activity.................................... 107
Government Regulations.................................................... 108
Management and Employees.................................................. 110
Legal Proceedings......................................................... 110
POLICIES WITH RESPECT TO CERTAIN ACTIVITIES............................... 111
Investment Policies....................................................... 111
Dispositions.............................................................. 112
Financing................................................................. 112
Working Capital Reserves.................................................. 113
Conflict of Interest Policies............................................. 113
Other Policies............................................................ 115
THE FINANCING............................................................. 116
The Mortgage Loans........................................................ 116
The Credit Facility....................................................... 116
MANAGEMENT................................................................ 118
Directors and Executive Officers.......................................... 118
Committees of the Board of Directors...................................... 120
Compensation of Directors................................................. 120
Executive Compensation.................................................... 121
Employment Agreements..................................................... 121
Stock Incentive Plan...................................................... 122
Section 401(k) Plan....................................................... 127
Indemnification........................................................... 127
CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS............................ 128
Partnership Agreement..................................................... 128
Assignment of Lease; Various Services Provided by the Services Company to
 the Kilroy Group......................................................... 128
Benefits of the Formation Transactions to Certain Executive Officers...... 128
PRINCIPAL STOCKHOLDERS.................................................... 129
DESCRIPTION OF CAPITAL STOCK.............................................. 130
General................................................................... 130
Common Stock.............................................................. 130
Transfer Agent and Registrar.............................................. 131
Preferred Stock........................................................... 131
Restrictions on Ownership and Transfer.................................... 131
CERTAIN PROVISIONS OF MARYLAND LAW AND OF THE COMPANY'S ARTICLES OF
 INCORPORATION AND BYLAWS................................................. 134
Board of Directors........................................................ 134
Removal of Directors...................................................... 134

                                                                          PAGE
                                                                          ----
Business Combinations..................................................... 135
Control Share Acquisitions................................................ 135
Amendment to the Articles of Incorporation and Bylaws..................... 136
Meetings of Stockholders.................................................. 136
Advance Notice of Director Nominations and New Business................... 136
Dissolution of the Company................................................ 137
Limitation of Directors' and Officers' Liability.......................... 137
Indemnification Agreements................................................ 138
PARTNERSHIP AGREEMENT OF THE OPERATING PARTNERSHIP........................ 139
Management................................................................ 139
Indemnification........................................................... 139
Transferability of Interests.............................................. 139
Issuance of Additional Units.............................................. 140
Capital Contribution...................................................... 140
Awards Under Stock Incentive Plan......................................... 141
Redemption/Exchange Rights................................................ 141
Registration Rights....................................................... 141
Tax Matters............................................................... 141
Operations................................................................ 142
Duties and Conflicts...................................................... 142
Certain Limited Partner Approval Rights................................... 142
Term...................................................................... 142
SHARES AVAILABLE FOR FUTURE SALE.......................................... 143
General................................................................... 143
Redemption/Exchange Rights/Registration Rights............................ 144
Reinvestment and Share Purchase Plan...................................... 145
FEDERAL INCOME TAX CONSEQUENCES........................................... 145
Taxation of the Company................................................... 145
Failure to Qualify........................................................ 150
Taxation of Taxable U.S. Stockholders Generally........................... 151
Backup Withholding........................................................ 152
Taxation of Tax-Exempt Stockholders....................................... 152
Taxation of Non-U.S. Stockholders......................................... 153
Tax Aspects of the Operating Partnership.................................. 155
Services Company.......................................................... 157
OTHER TAX CONSEQUENCES.................................................... 158
ERISA CONSIDERATIONS...................................................... 158
Employee Benefit Plans, Tax-Qualified Retirement Plans and IRAs .......... 158

ii

TABLE OF CONTENTS--(CONTINUED)

                                                                           PAGE
                                                                           ----
Status of the Company, the Operating Partnership and the Services Company
 Under ERISA.............................................................. 159
UNDERWRITING.............................................................. 160
LEGAL MATTERS............................................................. 161

                                                                           PAGE
                                                                           ----
EXPERTS................................................................... 161
ADDITIONAL INFORMATION.................................................... 162
GLOSSARY.................................................................. 163
INDEX TO FINANCIAL STATEMENTS............................................. F-1

FORWARD LOOKING STATEMENTS

THIS PROSPECTUS CONTAINS CERTAIN FORWARD LOOKING STATEMENTS WITHIN THE MEANING OF SECTION 27A OF THE SECURITIES ACT OF 1933 AND SECTION 21E OF THE SECURITIES EXCHANGE ACT OF 1934. ACTUAL RESULTS COULD DIFFER MATERIALLY FROM THOSE PROJECTED IN THE FORWARD LOOKING STATEMENTS AS A RESULT OF CERTAIN UNCERTAINTIES SET FORTH BELOW AND ELSEWHERE IN THIS PROSPECTUS.

THE FORWARD LOOKING STATEMENTS INCLUDED IN THIS PROSPECTUS UNDER THE CAPTIONS "PROSPECTUS SUMMARY," "THE COMPANY," "DISTRIBUTION POLICY,"

"MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS," AND "BUSINESS AND PROPERTIES," SUCH AS THOSE CONCERNING, AMONG OTHER THINGS, FUTURE RESULTS OF OPERATIONS, CASH AVAILABLE FOR DISTRIBUTION, LEASE RENEWALS, INCREASES IN BASE RENT, FEE DEVELOPMENT ACTIVITIES, SOURCES OF GROWTH, ECONOMIC CONDITIONS AND TRENDS, PROPERTY ACQUISITIONS AND PLANNED DEVELOPMENT AND EXPANSION OF OWNED OR LEASED PROPERTY ARE PROJECTIONS AND ARE NECESSARILY SUBJECT TO VARIOUS RISKS AND UNCERTAINTIES. ACTUAL OUTCOMES ARE DEPENDENT UPON THE COMPANY'S SUCCESSFUL PERFORMANCE OF INTERNAL PLANS, ECONOMIC CONDITIONS IN THE SUBMARKETS IN WHICH THE COMPANY'S PROPERTIES ARE LOCATED SUCH AS OVERSUPPLY OF OFFICE, INDUSTRIAL OR RETAIL SPACE OR A REDUCTION IN THE DEMAND FOR SUCH SPACE, SUCCESSFUL COMPLETION OF PLANNED DEVELOPMENT, THE AVAILABILITY OF DEVELOPMENT OPPORTUNITIES, THE AVAILABILITY OF ACQUISITION AND DEVELOPMENT FINANCING, COMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS AND THE SUCCESSFUL MANAGEMENT OF OTHER ECONOMIC, LEGAL, FINANCIAL AND GOVERNMENTAL RISKS AND UNCERTAINTIES.

iii

PROSPECTUS SUMMARY

The following summary is qualified in its entirety by the more detailed information and financial data, including the financial statements and notes thereto, set forth elsewhere in this Prospectus. Unless otherwise indicated, all calculations and information contained in this Prospectus assume (i) an initial public offering price of $20 per share of Common Stock (representing the midpoint of the range set forth on the cover page of this Prospectus),
(ii) that the Underwriters' over-allotment option will not be exercised and
(iii) the consummation of the Formation Transactions described under the heading "Formation and Structure of the Company," including consummation of the financings described under the heading "The Financing" and the acquisition of certain properties described under the heading "Business and Properties-- Acquisition Properties" and give pro forma effect thereto as if such transactions had each occurred on January 1, 1995. In addition, unless otherwise indicated, all calculations and information contained in this Prospectus, other than the historical and pro forma financial statements and the respective notes thereto, give pro forma effect to the recent extension of the tenant lease with Hughes Electronics Corporation's Space & Communications Company with respect to space leased in the Office Property located at 2250 E. Imperial Highway, and a portion of the space leased in the Office Property located at 2240 E. Imperial Highway as if such lease renewal had occurred on January 1, 1995. Unless the context otherwise requires, (i) the "Company" shall include Kilroy Realty Corporation ("Kilroy Realty") and its subsidiaries, including Kilroy Realty, L.P. (the "Operating Partnership") and Kilroy Services, Inc. (the "Services Company"), and with respect to the period prior to the Offering, the Kilroy Group (as defined below), and its predecessors,
(ii) the "Kilroy Group" shall mean, collectively, Kilroy Industries, a California corporation ("KI"), and certain of its affiliated corporations, partnerships and trusts that prior to the Offering owned the Properties, as identified in "Note 1. Organization and Basis of Presentation" to the historical financial statements of the Kilroy Group (collectively, the "Partnerships") and (iii) the "Continuing Investors" shall mean the persons and entities which beneficially own interests in the Partnerships or in the Properties and will receive limited partnership interests ("Units") in the Operating Partnership in connection with the Formation Transactions. See "-- Formation and Structure of the Company." Additional capitalized terms shall have the meanings set forth in the Glossary beginning on page 163.

THE COMPANY

The Company has been formed to succeed to the business of the Kilroy Group, consisting principally of a portfolio of Class A suburban office and industrial buildings in prime locations, primarily in Southern California, and the Kilroy Group's real estate ownership, acquisition, development, leasing and management businesses which were established in Southern California in 1947. Upon the consummation of the Offering and the Formation Transactions, the Company (through the Operating Partnership) will own 14 Office Properties encompassing an aggregate of approximately 2.0 million rentable square feet and 12 Industrial Properties encompassing an aggregate of approximately 1.3 million rentable square feet. Eleven of the 14 Office Properties and 11 of the 12 Industrial Properties are located in prime Southern California suburban submarkets (including a complex of three Office Properties located in El Segundo, adjacent to the Los Angeles International Airport, presently the nation's second largest air-cargo port, and a complex of five Office Properties located adjacent to the Long Beach Municipal Airport). The Company also will own three Office Properties located adjacent to the Seattle-Tacoma International Airport in the State of Washington and one Industrial Property located in Phoenix, Arizona. The Office Properties, Industrial Properties and the related assets owned by the Partnerships contributed to the Company by the Continuing Investors in connection with the Formation Transactions are collectively referred to herein as the "Properties." As of September 30, 1996, the Office Properties were approximately 79.8% leased to 130 tenants and the Industrial Properties were approximately 93.7% leased to 20 tenants. The average age of the Office Properties and the Industrial Properties is approximately 12 years and 24 years, respectively. The Company developed and leased all but two of the 14 Office Properties and all but five of the 12 Industrial Properties, and, upon consummation of the Offering and acquisition of the Acquisition Properties, will manage all of the Properties.

The Company was founded in 1947 by John B. Kilroy, Sr., a nationally prominent member of the real estate community, and is led by John B. Kilroy, Jr., the Company's Chief Executive Officer and President. The

1

Company's executive officers have been with the Company for an average of approximately 13 years. The Company presently has 47 employees, 34 of whom are located at the Company's headquarters at Kilroy Airport Center at El Segundo, California. Upon consummation of the Offering, the Company's officers and directors (and certain of their affiliates) will own in the aggregate 19.6% of the Company's Common Stock (or interests exchangeable therefor).

The Company's strategy has been to own, develop, acquire, lease and manage Class A properties in select locations in key suburban submarkets, primarily in Southern California, that the Company believes have strategic advantages compared to neighboring submarkets. Existing locations offer tenants: (i) lower business taxes and operating expenses than in adjoining submarkets; (ii) access to highly skilled labor markets; (iii) strategic access to major transportation facilities such as freeways, airports and the expanded Southern California light-rail system; (iv) proximity to the Los Angeles-Long Beach port complex which presently ranks as the largest commercial port in the United States; and
(v) for tenants with their names on certain Properties, visibility to freeway and airplane travelers. As a result, the Properties attract major corporate tenants and historically have achieved among the highest occupancy, tenant retention and rental rates, both within their respective submarkets and as compared to their respective neighboring submarkets. See "Business and Properties--Office Properties" and "--Industrial Properties."

The Company's major tenants include, among others, Hughes Electronic Corporation's Space & Communications Company and related companies ("Hughes Space & Communications"), a tenant since 1984, which is engaged in high- technology commercial activities including satellite development and related applications such as DirecTV, as well as Mattel, Inc., Northwest Airlines, Inc., Olympus America, Inc. and Furon Co., Inc. As of December 31, 1995, the Company's ten largest office tenants and ten largest industrial tenants (based upon annual base rents as of December 31, 1995) had leased space from the Company for an average of 5.3 years. The Company's strong relationships with its tenants is further evidenced by its average tenant retention rate (based upon rentable square feet) for the two-year and nine-month period ended September 30, 1996, which was 71.7% for the Properties located in the Southern California Area. The Company's extensive experience and long-term presence in Southern California have enabled it to form key alliances and working relationships with large corporate tenants, municipalities and landowners that have led to a variety of development projects and provide a continuing source of development and acquisition opportunities with institutional sellers. As a result of its experience and relationships, the Company currently has exclusive rights to develop approximately 24 acres of developable land (net of the acreage required for streets) at Kilroy Airport Center Long Beach (the "Development Properties"). These properties are presently entitled for over 900,000 rentable square feet of office, industrial and retail space. See "Business and Properties--Development, Leasing and Management Activities."

The Company believes, based on independent economic surveys, that the Southern California office and industrial real estate market is recovering after experiencing a downturn over the last several years. Vacancy rates in the Class A office space market in the greater Southern California area, including the counties of Los Angeles, Orange, Riverside, San Bernardino and Ventura (the "Southern California Area"), have decreased from a high in 1991 and 1992 of nearly 20.0% to a level at the end of 1996 of under 17.0%. Vacancy rates in the industrial space market in the Southern California Area also are decreasing from a high of nearly 14.0% in 1992 to 7.6% at the end of 1996. In addition, the Company has on average achieved increases in rental rates since 1994 in the Office Properties it has managed. See "--The Company's Southern California Submarkets" and "Business and Properties--The Company's Southern California Submarkets." Management believes that the on-going economic recovery in its submarkets will continue the trend of increasing occupancy rates and should apply some upward pressure on rents for Class A office buildings. See "--Growth Strategies."

The Company believes that the foundation for its growth in future years will be the strengthening Southern California economy, the quality and strategic location of its Properties, the economic benefits of its submarkets to tenants, its capital structure, its access to public capital markets, the lack of new construction of office properties in its submarkets, its access to developable properties, the knowledge and experience of its senior

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management team and its long-term relationships with large Southern California corporate tenants, municipalities, landowners and institutional sellers. In addition, the Company believes that it will be one of a limited number of REITs focusing on office and industrial properties and that it will be the only REIT with a 50-year operating history concentrating primarily on suburban Southern California office and industrial properties. In the 12 months following the consummation of the Offering, the Company expects sources of potential growth in cash available for distribution per share from the amount set forth under the caption "Distribution Policy" through: (i) the further leasing of its available space, currently approximately 400,000 rentable square feet; (ii) the renewal of leases for approximately 60,000 rentable square feet which expire during such period; and (iii) the acquisition of strategic properties with Units and/or with available cash and borrowings under a $100.0 million revolving credit facility (the "Credit Facility") which the Company expects to enter into shortly after the Offering and its approximately $20.0 million of working capital cash reserves upon consummation of the Offering. In the second 12-month period following consummation of the Offering, the Company expects sources of potential growth in cash flow per share from: (i) contractual increases in base rent payments from tenants; (ii) continued leasing of available space; (iii) the acquisition of strategic properties; and (iv) the contemplated completion of certain planned development activities. In addition, the Company presently plans to expand one or more of its Industrial Properties during the next two years, subject to substantial pre-leasing. There can be no assurance, however, that the Company will achieve any growth in cash available for distribution per share, that available space will be leased, that leases scheduled to expire will be renewed or that the Company will successfully acquire additional properties or complete any of its planned development activities. See "Risk Factors--Real Estate Investment Considerations --Risks of Real Estate Acquisition and Development."

The Company will be fully integrated in that it will perform substantially all leasing, management and tenant improvements on an "in-house" basis and will be self-administered and self-managed. The Company expects to qualify as a REIT for federal income tax purposes beginning with its taxable year ending December 31, 1997. See "Federal Income Tax Consequences--Taxation of the Company."

RISK FACTORS

An investment in the shares of Common Stock involves various material risks. Prospective investors should carefully consider the following risk factors, in addition to the other information set forth in this Prospectus, in connection with an investment in the shares of Common Stock offered hereby. Such risks include, among others:

. conflicts of interest, particularly with the Continuing Investors (including John B. Kilroy, Sr. and John B. Kilroy, Jr.) in connection with the (i) Formation Transactions, (ii) operation of the Company's ongoing businesses, including conflicts associated with the tax consequences to Continuing Investors of sales or refinancings of any of the Properties, which, together with certain provisions of the Operating Partnership agreement, may influence the Company's decision to sell or refinance, or to prepay debt secured by, certain properties, (iii) potential election by the Company to exercise its option to purchase any of the properties owned or controlled by one or more of the Continuing Investors which the Company has the option to acquire (the "Excluded Properties") and (iv) enforcement of agreements with affiliates of the Company, any of which could result in decisions affecting the Company that do not fully reflect interests of all of the Company's stockholders;

. limitations on the Company's ability to withdraw as general partner of the Operating Partnership, transfer or assign its interest in the Operating Partnership without the consent of at least 60% of the Units (including Units held by the Company which will represent 80.8% of all Units outstanding upon consummation of the Offering) and without meeting certain criteria with respect to the consideration to be received by the Continuing Investors, or to dissolve the Operating Partnership or sell the Office Property located at 2260 E. Imperial Highway, El Segundo, California, at Kilroy Airport Center at El Segundo without the consent of more than 50% of the Units held by limited partners (excluding Units held by the Company), which may in each case result in the Company taking action that is not in the best interest of all stockholders;

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. taxation of the Company as a corporation if it fails to qualify as a REIT for federal income tax purposes, the Company's liability for certain federal, state and local income taxes in such event and the resulting decrease in cash available for distribution;

. the inability of the Company to control the operations of the Services Company, which could result in decisions that do not reflect the Company's interest because the Company does not control the election of directors or the selection of officers of the Services Company;

. the valuation of the Properties was not based on third-party appraisals and there have not been arm's-length negotiations with respect to such values. The consideration to be paid by the Company for the Properties may exceed their aggregate fair market value;

. A portion of the Company's anticipated cash flow may be generated from development activities, which are partially dependent on the availability of development opportunities, and are subject to the risks inherent in development as well as general economic conditions and limitations on such activities imposed by the REIT tests, which in turn may negatively impact the Company's ability to make distributions;

. geographic concentration of 22 of its 26 Properties in Southern California, creating a dependence on demand for office, industrial and retail space in such market and increasing the risk that the Company will be materially adversely affected by general economic conditions in a single market;

. the Company's results of operations are dependent on certain key tenants, particularly Hughes Space & Communications, which accounted for approximately 25.3% of the Company's total base rental revenues for the year ending December 31, 1995 (giving pro forma effect to a recent extension of a lease with Hughes Space & Communications with respect to two of the Office Properties located at Kilroy Airport Center at El Segundo), thereby increasing the potential negative impact to the Company of downturns in the business of, or its relationship with, such tenants. The base periods of the Hughes Space & Communications' leases expire beginning in January 1999;

. the distribution requirements for REITs under federal income tax laws may limit the Company's ability to finance future acquisitions, developments and expansions without additional debt or equity financing and may limit cash available for distribution;

. real estate investment considerations such as the effect of economic and other conditions on real estate values, the general lack of liquidity of investments in real estate, the ability of tenants to pay rents, the possibility that leases may not be renewed or will be renewed on terms less favorable to the Company, the possibility of uninsured losses, including losses associated with earthquakes, the ability of the Properties to generate sufficient cash flow to meet operating expenses, including debt service, and competition in seeking properties for acquisition and in seeking tenants, which, individually or in the aggregate, may negatively impact the Company's ability to make distributions;

. risks associated with debt financing, including the potential inability to refinance mortgage indebtedness upon maturity and the potential increase in the level of indebtedness incurred by the Company since its organizational documents do not limit the amount of indebtedness which the Company may incur, which may adversely affect the ability of the Company to repay debt, particularly in the event of a downturn in the Company's business;

. substantial influence over the affairs of the Company by certain Continuing Investors who are directors and executive officers of the Company, and the ability of the Board of Directors to change the investment policies of the Company (including the Company's ratio of debt to total market capitalization) without the consent of stockholders, which may result in a decline in the market value of the Common Stock;

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. potential antitakeover effects of provisions generally limiting the actual or constructive ownership by any one person or entity of Common Stock to 7.0% of the outstanding shares, a classified board of directors and other charter and statutory provisions and provisions in the Operating Partnership partnership agreement that may have the effect of inhibiting a change of control of the Company or making it more difficult to effect a change in management or limiting the opportunity for stockholders to receive a premium over the market price for the Common Stock;

. dependence on key personnel;

. the Company's cash available for distribution may be less than the Company expects and may decrease in future periods from expected levels, materially adversely affecting the Company's ability to make the expected annual distributions of $1.55 per share during the 12-month period following consummation of the Offering (which represents approximately 93.6% of the estimated cash available for distribution for such period) or to sustain such distribution rate in the future;

. the Company's historical operating losses for financial reporting purposes;

. the ability of the Company to incur more debt, thereby increasing its debt service, which could adversely affect the Company's cash flow;

. the potential liability of the Company for environmental matters and the costs of compliance with certain governmental regulations, which may negatively impact the Company's financial condition, results of operations and cash available for distribution;

. immediate and substantial dilution of $12.84 per share in the net tangible book value per share of the shares of Common Stock purchased by new investors in the Offering;

. no prior public market for the shares of Common Stock, including the risk that an active trading market might not develop, or if developed might not be maintained, which may negatively impact the price at which shares of Common Stock may be resold;

. potential adverse effects on the value of the shares of Common Stock of fluctuations in interest rates or equity markets, which may negatively impact the price at which shares of Common Stock may be resold and may limit the Company's ability to raise additional equity to finance future development; and

. the possible issuance of additional shares of Common Stock, including 2,692,374 shares of Common Stock issuable upon exchange of the Units outstanding upon consummation of the Offering, which may adversely affect the market price of the shares of Common Stock or result in dilution on a per share basis of cash available for distribution.

FORMATION AND STRUCTURE OF THE COMPANY

The Company was formed in September 1996 and the Operating Partnership was formed in October 1996. The Services Company will be formed prior to consummation of the Offering. Prior to or simultaneous with the consummation of the Offering, the Company, the Operating Partnership, the Services Company and the Continuing Investors will engage in certain transactions (the "Formation Transactions"), designed to enable the Company to continue and expand the real estate operations of the Continuing Investors, to facilitate the Offering, to enable the Company to qualify as a REIT for federal income tax purposes commencing with its taxable year ending December 31, 1997 and to preserve certain tax advantages for the existing owners of the Properties. The Formation Transactions are as follows:

. Pursuant to an omnibus option agreement (the "Omnibus Agreement"), the Operating Partnership may require the contribution to the Operating Partnership of all of the Continuing Investors' interests in the Properties (other than the Acquisition Properties), the assets used to conduct the leasing, management and development activities (principally office equipment), the contract rights in connection with

5

development opportunities at Kilroy Airport Center Long Beach, and the rights with respect to the purchase of each of the Acquisition Properties, in exchange for Units representing limited partnership interests in the Operating Partnership. The book value to the Continuing Investors of the assets to be contributed to the Operating Partnership is a negative $113.2 million and the value of the Units representing limited partnership interests in the Operating Partnership to be received by the Continuing Investors is $53.8 million, assuming a Unit value equal to the assumed initial public offering price of $20.00 per share. The right to acquire the Properties and the other assets described above in exchange for Units is conditioned upon the consummation of the Offering. Pursuant to the terms of the Omnibus Agreement, the Operating Partnership has the right to acquire the Properties and other assets from the Continuing Investors in exchange for Units through December 31, 1998, the date the Omnibus Agreement terminates. Following the consummation of the Offering and the Formation Transactions, the Units received by the Continuing Investors will constitute in the aggregate an approximately 19.2% limited partnership interest in the Operating Partnership.

. John B. Kilroy, Sr. and John B. Kilroy, Jr. will acquire all of the voting common stock of the Services Company for the aggregate purchase price of $5,275 in cash (representing 5.0% of its economic value), and the Operating Partnership will acquire all of the non-voting preferred stock of the Services Company (representing 95.0% of its economic value).

. The Company will sell shares of Common Stock in the Offering, issue restricted shares of Common Stock to Richard E. Moran Jr., Executive Vice President, Chief Financial Officer and Secretary of the Company (but not a Continuing Investor) and contribute the net proceeds from the Offering and the issuance of such restricted stock (approximately $206.6 million in the aggregate) to the Operating Partnership in exchange for an 80.8% general partner interest in the Operating Partnership.

. The Operating Partnership will borrow approximately $84.0 million in principal amount of long-term financing and $12.0 million in principal amount of short-term debt pursuant to the Mortgage Loans.

. The Company, through the Operating Partnership, will apply the aggregate of the net Offering proceeds and the Mortgage Loans toward the repayment of existing mortgage indebtedness on certain of the Properties, the purchase of the Acquisition Properties and the payment of its expenses from the Offering and the Financing. See "Use of Proceeds."

. Forty-seven of the current 69 employees of KI will become employees of the Company, the Operating Partnership and/or the Services Company, including John B. Kilroy, Jr., the President and Chief Executive Officer of KI, three other officers (Mr. Jeffrey Hawken, Executive Vice President and Chief Operating Officer, Mr. Richard E. Moran Jr., Executive Vice President, Chief Financial Officer and Secretary, and Mr. Campbell Hugh Greenup, General Counsel) who are not Continuing Investors and 43 other operating and administrative employees. See "Management."

. Concurrent with the consummation of the Offering, the Operating Partnership or the Services Company will enter into management agreements with respect to each of the Excluded Properties (the "Management Agreements"). Pursuant to the terms of each of the Management Agreements, the Operating Partnership or the Services Company, as applicable, will have exclusive control and authority (subject to an operating budget to be approved by the owners of each property) over each of the Excluded Properties for a term of 24 months. If any of the Excluded Properties are sold during the term of the Management Agreements, then either party may terminate the respective Management Agreement upon 30 days' prior written notice. In consideration of the services to be provided under each of the Management Agreements, the Company will receive a market rate monthly property management fee as well as any applicable leasing commissions. See "Business and Properties--Excluded Properties."

. Concurrent with the consummation of the Offering, the Company also will enter into option agreements (together, the "Option Agreements") with partnerships controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr. granting to the Operating Partnership the exclusive right to acquire (i) approximately 18

6

undeveloped acres located at Calabasas Park Centre for cash and (ii) the Office Property located at North Sepulveda Boulevard, El Segundo for cash (or for Units after the first anniversary of the Offering at the election of the seller), and in each case pursuant to the other terms of the respective Option Agreement. See "Business and Properties--Excluded Properties--Calabasas Park Centre" and "--North Sepulveda Boulevard, El Segundo" for a discussion of the purchase price and other material terms of each Option Agreement.

The Continuing Investors are comprised of (i) seven individuals, John B. Kilroy, Sr., his five children, John B. Kilroy, Jr., Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso, and Marshall L. McDaniel, a long-time employee of KI, all of whom are "accredited investors" as defined in Regulation D ("Regulation D") under the Securities Act, and (ii) corporations, partnerships and trusts owned, directly or indirectly, solely by such individuals, all of which are also "accredited investors." See "Note 1. Organization and Basis of Presentation" to the historical financial statements of the Kilroy Group. In addition, John B. Kilroy, Sr. is the Company's Chairman of the Board of Directors and John B. Kilroy, Jr. is President and Chief Executive Officer and a director of the Company. Consent on behalf of the Continuing Investors to the Formation Transactions was received on or before November 3, 1996 pursuant to a private solicitation thereof in compliance with Regulation D.

REASONS FOR THE REORGANIZATION OF THE COMPANY

The Company believes that the benefits of the Formation Transactions outweigh the detriments to the Company. The benefits of the Company's REIT status and structure, as opposed to the status and structure of the Partnerships, include greater access to capital for refinancing and growth, allowing stockholders to participate in real estate growth through one business enterprise, diversification of risk and reward not available in single asset entities, reduction in indebtedness encumbering the Properties, greater liquidity than interests in partnerships owning individual properties, allowing stockholders to benefit potentially from the current public market valuation of REITs and deferral of tax liabilities to the Continuing Investors upon contribution of the Properties.

The detriments of the Company's REIT status and structure as opposed to the status and structure of the Partnerships include the fact that management will be subject to conflicts of interest in the operation of the Operating Partnership and the limited partners of the Operating Partnership will have certain approval rights with respect to certain transactions, including (i) the right of partners holding in the aggregate at least 60% of all interests in the Operating Partnership to withhold consent to the withdrawal of the general partner, or the transfer or assignment of the general partner's interest in the Operating Partnership (see "Partnership Agreement of the Operating Partnership--Transferability of Interests") and (ii) if limited partners own at least 5% of the outstanding Units (including Units owned by the Company), the right of limited partners holding in the aggregate more than 50% of all Units representing limited partnership interests in the Operating Partnership to withhold consent to (a) the dissolution of the Operating Partnership (other than pursuant to a merger or sale of substantially all of the Company's assets) or (b) prior to the seventh anniversary of the consummation of the Offering, to sell the Office Property located at 2260 E. Imperial Highway at Kilroy Airport Center at El Segundo (see "Partnership Agreement of the Operating Partnership--Certain Limited Partner Approval Rights"). In addition, the Continuing Investors will have influence over certain transactions, including with respect to the Company's acquisition, management and leasing activities, asset sales, dispositions and refinancings of properties and its distribution policy. Other detriments of the Company's REIT status include a potential lower overall rate of return for an investor who exchanges an interest in a single asset for a smaller interest in a group of assets, lower potential of distributions from asset sales, no assurance that the public market valuation of the Company will reflect private real estate values, the aggregate cost to the Company of the Offering (estimated at approximately $19.4 million, including underwriting discounts and commissions) and the incremental costs of operating a public company. See also "Risk Factors."

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The following diagram illustrates the structure of the Company, the Operating Partnership and the Services Company after the consummation of the Offering and the Formation Transactions:

Kilroy Realty Corporation
(the "Company")(1)

Kilroy Realty, L.P.
(the "Operating Partnership")

80.8% owned by the Company
as general partner
19.2% owned by the Continuing Investors
as limited partners

Kilroy Services, Inc.
(the "Services Company")

100% nonvoting
preferred stock owned by
the Operating Partnership(/2/)
100% voting common stock
owned by John B. Kilroy, Sr.
and John B. Kilroy, Jr.(/3/)


(1) 11,300,000 shares of Common Stock, representing 99.5% of the outstanding shares of Common Stock after the Offering, will be owned by public stockholders and 60,000 restricted shares of Common Stock, representing 0.5% of the outstanding shares of Common Stock, will be owned by Richard E. Moran Jr., Executive Vice President, Chief Financial Officer and Secretary of the Company (but not a Continuing Investor). If all Units of the Operating Partnership were exchanged for Common Stock, the Company would be owned approximately 80.4% by public stockholders, 0.4% by Mr. Moran and 19.2% by the Continuing Investors. Beginning on the second anniversary of the consummation of the Offering, each Unit will be redeemable by the Operating Partnership at the request of the Unitholder for cash (based on the fair market value of an equivalent number of shares of Common Stock at the time of such redemption) or, at the Company's option, it may exchange Units for shares of Common Stock on a one-for-one basis, subject to certain antidilution adjustments and exceptions; provided, however, that if the Company does not elect to exchange such Units for shares of Common Stock, a Unitholder that is a corporation or limited liability company may require the Company to issue shares of Common Stock in lieu of cash, subject to the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors. See "Partnership Agreement of Operating Partnership--Redemption/Exchange Rights." Under certain circumstances, 50% of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries may be redeemed prior to the second anniversary of the consummation of the Offering in connection with the obligation of certain of the Continuing Investors to indemnify the Company in connection with the Formation Transactions. See "Formation and Structure of the Company--Allocation of Consideration in the Formation Transactions." Executive officers, directors and other employees of the Company will have options to acquire approximately 900,000 shares of Common Stock which could reduce the percentage owned by public stockholders to approximately 75.6% (assuming exchange of all outstanding Units and the exercise of all outstanding options).

(2) Represents 95.0% of the economic interest in the Services Company.

(3) Represents 5.0% of the economic interest in the Services Company.

The Company presently anticipates that one of the Mortgage Loans (see "--The Financing") will be incurred by a limited partnership which is wholly-owned by the Company and the Operating Partnership and which will be structured to be a "bankruptcy remote" financing vehicle. The Properties pledged as collateral for such Mortgage Loan will be transferred to such limited partnership.

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BENEFITS TO THE CONTINUING INVESTORS

The principals of KI proposed the Formation Transactions to the Continuing Investors because they believe that the benefits of the organization of the Company for the Continuing Investors outweigh the detriments to them. Benefits to the Continuing Investors include:

. improved liquidity of their interests in the Properties and increased diversification of their investment;

. repayment of indebtedness in the aggregate net amount of approximately $229.5 million resulting from the refinancing of existing mortgage indebtedness, of which approximately $37.2 million is guaranteed by John B. Kilroy, Sr., including $8.7 million which also is guaranteed by John B. Kilroy, Jr., and the repayment of approximately $3.4 million of personal indebtedness of John B. Kilroy, Sr.;

. an employment agreement between the Company and John B. Kilroy, Jr. providing annual salary, incentive compensation (including Common Stock options) and other benefits for his services as an officer of the Company (see "Management--Employment Agreements"), and a grant of options to purchase Common Stock to John B. Kilroy, Sr. (see "Management--Stock Incentive Plan"); and

. the deferral of certain tax consequences that would arise from a sale, or in certain circumstances a contribution, of such interests and assets to the Company or to a third party.

DETERMINATION AND VALUATION OF OWNERSHIP INTERESTS

The Company's percentage interest in the Operating Partnership was determined based upon the percentage of estimated cash available for distribution required to pay estimated cash distributions resulting in an annual distribution rate equal to 7.75% of the assumed initial public offering price of the Common Stock of $20.00. The ownership interest in the Operating Partnership allocated to the Company is equal to this percentage of estimated cash available for distribution, and the remaining interest in the Operating Partnership will be allocated to the Continuing Investors receiving Units in the Formation Transactions. The parameters and assumptions used in deriving the estimated cash available for distribution are described under the caption "Distribution Policy."

In connection with the Offering, the Company did not obtain appraisals with respect to the market value of any of the Properties or other assets that the Company will own immediately after consummation of the Offering and the Formation Transactions or an opinion as to the fairness of the allocation of shares to the purchasers in the Offering. The initial public offering price will be determined based upon the estimated cash available for distribution and the factors discussed under the caption "Underwriting," rather than a property by property valuation based on historical cost or current market value. This methodology has been used because management believes it is appropriate to value the Company as an ongoing business rather than with a view to values that could be obtained from a liquidation of the Company or of individual properties owned by them. See "Underwriting."

FORMATION OF KILROY SERVICES, INC.

Prior to consummation of the Offering, Kilroy Services, Inc. (the "Services Company") will be formed under the laws of the State of Maryland to succeed to the development activities of the Kilroy Group and to perform development activities for the Company and third parties. John B. Kilroy, Sr. and John B. Kilroy, Jr. together will own 100% of the voting common stock of the Services Company, representing 5.0% of its economic value. The Operating Partnership will own 100% of the nonvoting preferred stock of the Services Company, representing 95.0% of its economic value. The ownership structure of the Services Company is necessary to permit the Company to share in the income of the activities of the Services Company and also maintain its status as a REIT. Although the Company anticipates receiving substantially all of the economic benefit of the businesses carried on by the Services Company through the Company's right to receive dividends through the Operating Partnership's investment in the Services Company's nonvoting preferred stock, the Company will not be able to elect the Services Company's officers or directors and, consequently, may not have the ability to influence the operations of the Services Company. See "Risk Factors--Risks of Development Business and Related Activities Being Conducted by the Services Company--Adverse Consequences of Lack of Control Over the Businesses of the Services Company."

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GROWTH STRATEGIES

The Company's objectives are to maximize growth in cash flow per share and to enhance the value of its portfolio through effective management, operating, acquisition and development strategies. The Company believes that opportunities exist to increase cash flow per share: (i) by acquiring office and industrial properties with attractive returns in strategic suburban submarkets where such properties complement its existing portfolio; (ii) from contractual increases in base rent; (iii) as a result of increasing rental and occupancy rates and decreasing concessions and tenant installation costs as vacancy rates in the Company's submarkets generally continue to decline; (iv) by developing properties for the benefit of the Company where such development will result in a favorable risk-adjusted return on investment; and (v) by expanding Properties within the Company's existing industrial portfolio. The Company's ability to achieve its growth strategy will be aided by its working capital cash reserves of approximately $20.0 million upon consummation of the Offering and the proposed Credit Facility.

The Company believes that a number of factors will enable it to achieve its business objectives, including: (i) the opportunity to lease available space at attractive rental rates because of increasing demand and, with respect to the Office Properties, the present lack of new construction in the Southern California submarkets in which most of the Properties are located; (ii) the presence of distressed sellers and inadvertent owners (through foreclosure or otherwise) of office and industrial properties in the Company's markets, as well as the Company's ability to acquire properties with Units (thereby deferring the seller's taxable gain), all of which create enhanced acquisition opportunities; (iii) the quality and location of the Properties; and (iv) the limited availability to competitors of capital for financing development, acquisitions or capital improvements. Management believes that the Company is well positioned to exploit existing opportunities because of its extensive experience in its submarkets and its nearly 50-year presence in the Southern California market, its seasoned management team and its proven ability to develop, lease and efficiently manage office and industrial properties. In addition, the Company believes that public ownership and its capital structure will provide new opportunities for growth. There can be no assurance, however, that the Company will be able to lease available space, complete any property acquisitions, successfully develop any land acquired or improve the operating results of any developed properties that are acquired. See "Business and Properties--Development, Leasing and Management Activities."

Operating Strategies. The Company will focus on enhancing growth in cash flow per share by: (i) maximizing cash flow from existing Properties through active leasing, contractual base rent increases and effective property management;
(ii) managing operating expenses through the use of in-house management, leasing, marketing, financing, accounting, legal, construction management and data processing functions; (iii) maintaining and developing long-term relationships with a diverse tenant group; (iv) attracting and retaining motivated employees by providing financial and other incentives to meet the Company's operating and financial goals; and (v) continuing to emphasize capital improvements to enhance the Properties' competitive advantages in their markets.

The Company believes that the strength of its leasing is demonstrated by the Company's leasing activity since 1993. In the period from January 1, 1993 to September 30, 1996, the Company leased or renewed leases for an aggregate of approximately 1.0 million rentable square feet of office space and approximately 718,000 rentable square feet of industrial space. As of December 31, 1995, the Office Properties located in the Southern California Area were approximately 89.5% leased as compared to approximately 82.0% for the Southern California Area, approximately 89.2% for the El Segundo submarket and approximately 85.4% in the Long Beach submarket. In addition, at December 31, 1995, the Industrial Properties were approximately 91.4% leased as compared to approximately 82.3% and approximately 87.1% for industrial properties located in Los Angeles and Orange Counties, respectively. As of September 30, 1996, (i) the Office Properties contained approximately 2.0 million rentable square feet and were approximately 79.8% leased, and (ii) the Industrial Properties contained approximately 1.3 million rentable square feet and were approximately 93.7% leased. In addition, the number of

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individual lease transactions since 1992, including the results for the nine- month period ended September 30, 1996, averaged over 33 per year. See "Business and Properties--General," "--Properties," "--Occupancy and Rental Information" and "--The Company's Southern California Submarkets."

Approximately 1.0 million aggregate rentable square feet in the Properties was leased by the Company from January 1, 1992 through December 31, 1994, a period which management characterizes as recessionary. Based on the leases the Company signed in 1996, and the findings in an independent study of the Southern California real estate market commissioned by the Company, management believes that the recent trend toward increasing rental rates in Class A office and industrial buildings in the Company's Southern California submarkets presents significant opportunities for growth. In addition, approximately 66.5% of the Company's net rentable square feet is subject to leases expiring in 2000 or beyond, when management expects asking rents for the respective Properties to be higher than the rents paid pursuant to such leases. In addition, as of December 31, 1995 approximately 36.7% of the Company's total base rent (representing approximately 23.7% of the aggregate net rentable square feet of the Properties) was attributable to leases with Consumer Price Index increases and approximately 28.1% of the Company's total base rent (representing approximately 30.5% of the aggregate net rentable square feet of the Properties) was attributable to leases with other specified contractual increases. No assurance can be given, however, that new leases will reflect rental rates greater than or equal to current rental rates or that current or future economic conditions will support higher rental rates. See "Risk Factors--Real Estate Investment Considerations."

Acquisition Strategies. The Company will seek to increase its cash flow per share by acquiring additional quality office and industrial properties, including properties that may: (i) provide attractive initial yields with significant potential for growth in cash flow from property operations; (ii) are strategically located, of high quality and competitive in their respective submarkets; (iii) are located in the Company's existing submarkets and/or in other strategic submarkets where the demand for office and industrial space exceeds available supply; or (iv) have been under-managed or are otherwise capable of improved performance through intensive management and leasing that will result in increased occupancy and rental revenues. The Company believes that the Southern California market is an established and mature real estate market in which property owners generally have a low tax basis (and, accordingly, the potential for large taxable gains) in their properties. Management believes that the Company's extensive experience, capital structure and ability to acquire properties for Units, and thereby defer a seller's taxable gain, if any, will enhance the ability of the Company to consummate transactions quickly and to structure more competitive acquisitions than other real estate companies in the market which lack its access to capital or the ability to issue Units. See "Business and Properties--Development, Leasing and Management Activities."

The Company has entered into an agreement to acquire the two office properties that comprise Phase I of Kilroy Airport Center Long Beach. Kilroy Airport Center Long Beach Phase I was developed by the Company in 1987 and has been leased and managed by the Company since its inception. In addition, the Company has entered into an agreement to purchase an office property located in Thousand Oaks, California. The Company also has entered into an agreement to acquire a three building office and industrial complex located in Anaheim, California. In addition, KI, on behalf of the Operating Partnership, has acquired a multi-tenant industrial property located in Garden Grove, California. The acquisition of these properties (the "Acquisition Properties") by the Company is expected to occur concurrently with the consummation of the Offering and, accordingly, the Acquisition Properties are included in the discussion of the Properties included throughout this Prospectus. There can be no assurance, however, that the Company will be able to complete any property acquisitions, including the acquisition of the Acquisition Properties, successfully develop any land acquired or improve the operating results of any developed properties that are acquired. See "Business and Properties-- Acquisition Properties."

11

Development Strategies. The Company's interests in the Development Properties provide it with significant growth opportunities.

The Company is the master ground lessee of, and has sole development rights in, Kilroy Airport Center Long Beach, a planned four-phase, approximately 53- acre property entitled for office, research and development, light industrial and other commercial projects at which the Company will own, upon consummation of the Offering, all five existing Office Properties and manages all ongoing leasing and development activities. The Company developed Phases I and II in 1987 and 1989/1990, respectively, encompassing an aggregate of approximately 620,000 rentable square feet of office space. The Company controls development of the Phase III and IV parcels while receiving rental revenue in connection with such parcels under current leases expiring in July 2009 and September 1998, respectively, in amounts sufficient to cover a substantial portion of the predevelopment carrying costs. Phases III and IV presently are planned to be developed on the projects' approximately 24 undeveloped acres and are entitled for an aggregate of approximately 900,000 rentable square feet. The Company is currently in discussions with several prospective tenants for office space presently planned to be included in Kilroy Long Beach Phase III. Development of each of Phases III and IV is subject to substantial predevelopment leasing activity and, therefore, the timing for the commencement of development of Phases III and IV is uncertain. No assurance can be given that the Company will commence such development when planned, or that, if commenced, such development will be completed. See "Risk Factors--Real Estate Investment Considerations--Risks of Real Estate Acquisition and Development" and "Business and Properties--Development, Leasing and Management Activities--Kilroy Long Beach."

In addition, certain of the Industrial Properties can support additional development, and the Company presently is planning to develop in the next two years, subject to substantial pre-leasing, approximately 105,000 rentable square feet of such additional space.

The Company may engage in the development of other office and/or industrial properties primarily in Southern California submarkets when market conditions support a favorable risk-adjusted return on such development. The Company's activities with third-party owners in Southern California are expected to give the Company further access to development opportunities. There can be no assurance, however, that the Company will be able to successfully develop any of the Development Properties or any other properties. See "Business and Properties--Development, Leasing and Management Activities."

Financing Policies. The Company's financing policies and objectives are determined by the Company's Board of Directors. The Company presently intends to limit the ratio of debt to total market capitalization (total debt of the Company as a percentage of the market value of issued and outstanding shares of Common Stock, including interests exchangeable therefor, plus total debt) to approximately 50%. However, such objectives may be altered without the consent of the Company's stockholders, and the Company's organizational documents do not limit the amount of indebtedness that the Company may incur. Upon completion of the transactions outlined under the caption "Formation and Structure of the Company," total debt will constitute approximately 25.5% of the total market capitalization of the Company (assuming an initial public offering price of $20.00 per share of Common Stock). In addition, upon consummation of the Offering, the Company will have working capital cash reserves of approximately $20.0 million. The Company anticipates that upon consummation of the Offering all but approximately $12.0 million of its permanent indebtedness will bear interest at fixed rates. The Company intends to utilize one or more sources of capital for future acquisitions, including development and capital improvements, which may include undistributed cash flow, borrowings under the proposed Credit Facility, the Company's approximately $20.0 million of working capital cash reserves out of the net proceeds of the Offering, issuance of debt or equity securities and other bank and/or institutional borrowings. There can be no assurance, however, that the Company will be able to obtain capital for any such acquisitions, developments or improvements on terms favorable to the Company. See "--Growth Strategies," "The Company--Growth Strategies" and "Business and Properties--Development, Leasing and Management Activities."

12

THE OFFICE AND INDUSTRIAL PROPERTIES

The following table sets forth certain information relating to each of the Properties as of December 31, 1995, unless indicated otherwise. This table gives pro forma effect to a recent extension of one of the leases with Hughes Space & Communications with respect to two of the Office Properties located at Kilroy Airport Center at El Segundo as if such lease renewal had occurred on January 1, 1995. After completion of the Formation Transactions, the Company (through the Operating Partnership) will own a 100% interest in all of the Office and Industrial Properties other than the five Office Properties located at Kilroy Airport Center Long Beach and the three Office Properties located at the SeaTac Office Center, each of which are held subject to ground leases expiring in 2035 and 2062 (assuming the exercise of the Company's options to extend such lease), respectively.

                                                                                                    AVERAGE
                                                      PERCENTAGE                         PERCENTAGE  BASE
                                               NET      LEASED     1995                   OF 1995    RENT
                                            RENTABLE    AS OF      BASE        1995        TOTAL      PER     EFFECTIVE
                                             SQUARE    12/31/95    RENT      EFFECTIVE      BASE    SQ. FT.    RENT PER
       PROPERTY LOCATION         YEAR BUILT   FEET      (%)(1)   ($000)(2) RENT($000)(3)  RENT (%)  ($)(4)  SQ. FT. ($)(5)
       -----------------         ---------- --------- ---------- --------- ------------- ---------- ------- --------------
Office Properties:
Kilroy Airport Center at El
 Segundo
 2250 E. Imperial Highway(8)....     1983     291,187    80.9      4,316       4,042        11.5     18.32      17.16
 2260 E. Imperial Highway)(9)...     1983     291,187   100.0      7,160       6,545        19.1     24.59      22.48
 2240 E. Imperial Highway
 El Segundo, California(10).....     1983     118,933   100.0      1,130       1,121         3.0      9.50       9.43
Kilroy Airport Center Long Beach
 3900 Kilroy Airport Way(11)....     1987     126,840    94.0      2,282       2,092         6.1     19.14      17.55
 3880 Kilroy Airport Way(11)....     1987      98,243   100.0      1,296       1,022         3.5     13.19      10.40
 3760 Kilroy Airport Way........     1989     165,278    92.1      3,372       2,807         9.0     22.16      18.45
 3780 Kilroy Airport Way........     1989     219,745    63.6      3,465       3,005         9.2     24.79      21.50
 3750 Kilroy Airport Way
 Long Beach, California.........     1989      10,457   100.0         75          28         0.2      7.21       2.66
SeaTac Office Center
 18000 Pacific Highway..........     1974     207,092    58.7      1,799       1,510         4.8     14.80      12.42
 17930 Pacific Highway..........     1980     210,899     --         --          --          --        --         --
 17900 Pacific Highway
  Seattle, Washington...........     1980     113,605    87.7      1,896       1,820         5.0     19.02      18.26
La Palma Business Center
 4175 E. La Palma Avenue
  Anaheim, California(11).......     1985      42,790    93.2        493         475         1.3     12.37      11.92
2829 Townsgate Road
 Thousand Oaks, California(11)..     1990      81,158   100.0      1,888       1,760         5.0     23.26      21.69
185 S. Douglas Street
 El Segundo, California(12).....     1978      60,000   100.0      1,313         898         3.5     21.89      14.96
                                            ---------   -----     ------      ------        ----     -----      -----
Subtotal/Weighted Average                   2,037,414    77.0     30,485      27,125        81.2     19.44      17.30
                                            ---------   -----     ------      ------        ----     -----      -----
Industrial Properties:
2031 E. Mariposa Avenue
 El Segundo, California.........     1954     192,053   100.0      1,556       1,296         4.1      8.10       6.75
3340 E. La Palma Avenue
 Anaheim, California............     1966     153,320   100.0        881         790         2.3      5.74       5.16
2260 E. El Segundo Boulevard
 El Segundo, California(13).....     1979     113,820   100.0        553         510         1.5      4.86       4.48
2265 E. El Segundo Boulevard
 El Segundo, California.........     1978      76,570   100.0        554         493         1.5      7.23       6.44
1000 E. Ball Road
 Anaheim, California(14)........     1956     100,000   100.0        639         519         1.7      6.39       5.19
1230 S. Lewis Street
 Anaheim, California............     1982      57,730   100.0        303         284         0.8      5.25       4.92
12681/12691 Pala Drive
 Garden Grove, California ......     1970      84,700    82.6        476         454         1.3      6.81       6.48
            TENANTS LEASING
PERCENTAGE   10% OR MORE OF
  LEASED     NET RENTABLE
  AS OF     SQUARE FEET PER
 9/30/96       PROPERTY
  (%)(6)   AS OF 9/30/96(7)
---------- ----------------
   83.9    Hughes Space &
           Communications
           (33.0%)
  100.0    Hughes Space &
           Communications
           (100.0%)

  100.0    Hughes Space &
           Communications
           (94.6%)
   94.0    McDonnell
           Douglas
           Corporation
           (50.9%), Olympus
           America, Inc.
           (18.6%)
  100.0    Devry, Inc.
           (100.0%)
   82.6    R.L. Polk & Co.
           (9.8%)
   92.2    SCAN Health Plan
           (20.4%), Zelda
           Fay Walls (12.7%)
  100.0    Oasis Cafe
           (37.1%),
           Keywanfar &
           Baroukhim
           (16.1%),
           SR Impressions
           (15.0%)
   60.0    Principal Mutual
           (8.8%),
           Lynden (8.8%),
           Rayonier (8.0%)
    --     --

   87.7    Key Bank
           (41.9%)(15),
           Northwest
           Airlines
           (24.9%),
           City of Sea Tac
           (17.2%)


   91.6    Peryam & Kroll
           (26.7%),
           DMV/VPI
           Insurance Group
           (26.5%),
           Midcom
           Corporation
           (15.5%)

  100.0    Worldcom, Inc.
           (34.2%), Data
           Select Systems,
           Inc. (13.0%),
           Pepperdine
           University
           (12.7%),
           Anheuser Busch,
           Inc. (12.0%)

  100.0    Northwest
           Airlines, Inc.
           (100%)
  -----
   79.8
  -----
           Mattel, Inc.
  100.0    (100%)
           Furon Co., Inc.
   59.2    (59.2%)
           Ace Medical Co.
  100.0    (100%)
  100.0    MSAS Cargo
           Intl., Inc.
           (100%)

  100.0    Allen-Bradley
           Company (100%)

  100.0    Extron
           Electronics (100%)

   82.6    Rank Video Services America, Inc.
           (82.6%)

(footnotes on next page)

13

                                                                                           AVERAGE
                                             PERCENTAGE                         PERCENTAGE  BASE                  PERCENTAGE
                                      NET      LEASED     1995                   OF 1995    RENT                    LEASED
                                   RENTABLE    AS OF      BASE        1995        TOTAL      PER     EFFECTIVE      AS OF
                                    SQUARE    12/31/95    RENT      EFFECTIVE      BASE    SQ. FT.    RENT PER     9/30/96
   PROPERTY LOCATION    YEAR BUILT   FEET      (%)(1)   ($000)(2) RENT($000)(3)  RENT (%)  ($)(4)  SQ. FT. ($)(5)   (%)(6)
   -----------------    ---------- --------- ---------- --------- ------------- ---------- ------- -------------- ----------
2270 E. El Segundo
 Boulevard
 El Segundo,
 California...........     1975        7,500   100.0        129         129         0.3     17.17      17.17          --

5115 N. 27th Avenue
 Phoenix,
 Arizona(16)..........     1962      130,877   100.0        640         612         1.7      4.89       4.68        100.0

12752-12822 Monarch
 Street
 Garden Grove,
 CA(11)(17)...........     1970      277,037    76.4        727         715         1.9      3.43       3.38        100.0

4155 E. La Palma
 Avenue
 Anaheim, CA(11)(17)..     1985       74,618   100.0        325         237         0.9      4.36       3.18        100.0

4125 La Palma Avenue
 Anaheim, CA(11)(17)..     1985       69,472    65.6        319         302        0 .8      7.00       6.63        100.0
                                   ---------   -----     ------      ------       -----     -----      -----        -----
Subtotal/Weighted
 Average                           1,337,697    92.2      7,102       6,341        18.8      5.76       5.14         93.7
                                   ---------   -----     ------      ------       -----     -----      -----        -----
Office & Industrial--
 All Properties                    3,375,111    83.0     37,587      33,466       100.0     13.42      11.95         85.3
                                   ---------   -----     ------      ------       -----     -----      -----        -----
 TENANTS LEASING
  10% OR MORE OF
  NET RENTABLE
 SQUARE FEET PER
    PROPERTY
AS OF 9/30/96(7)
--------------------

       --
Festival
Markets, Inc.
(100%)

Cannon Equipment
(60%),
Vanco (16.4%)

Bond
Technologies
(29.6%),
NovaCare
Orthotics
(24.0%),
Specialty
Restaurants
Corp.
 (21.7%)

Household
Finance
Corporation
(59%), CSTS
(34%)


(1) Based on all leases at the respective Properties in effect as of December 31, 1995.
(2) Total base rent for the year ended December 31, 1995, determined in accordance with generally accepted accounting principles ("GAAP"). All leases at the Industrial Properties are written on a triple net basis. Unless otherwise indicated, all leases at the Office Properties are written on a full service gross basis, with the landlord obligated to pay the tenant's proportionate share of taxes, insurance and operating expenses up to the amount incurred during the tenant's first year of occupancy ("Base Year") or a negotiated amount approximating the tenant's pro rata share of real estate taxes, insurance and operating expenses ("Expense Stop"). Each tenant pays its pro rata share of increases in expenses above the Base Year or Expense Stop.
(3) Aggregate base rent received over their respective terms from all leases in effect at December 31, 1995 minus all tenant improvements, leasing commissions and other concessions for all such leases, divided by the terms in months for such leases, multiplied by 12. Tenant improvements, leasing commissions and other concessions are estimated using the same methodology used to calculate effective rent for the Properties as a whole in the charts set forth under the caption "Business and Properties-- General."
(4) Base rent for the year ended December 31, 1995 divided by net rentable square feet leased at December 31, 1995.
(5) Effective rent at December 31, 1995 divided by net rentable square feet leased at December 31, 1995.
(6) Based on all leases at the respective Properties dated on or before September 30, 1996. Occupancy for all Properties at December 31, 1996 was approximately 88.2%.
(7) Excludes office space leased by the Company.
(8) For this Property, a lease with Hughes Space & Communications, for approximately 96,000 rentable square feet, and with SDRC Software Products Marketing Division, Inc., for approximately 6,800 rentable square feet, are written on a full service gross basis except that there is no Expense Stop.
(9) For this Property, the lease with Hughes Space & Communications is written on a modified full service gross basis under which Hughes Space & Communications pays for all utilities and other internal maintenance costs with respect to the leased space and, in addition, pays its pro rata share of real estate taxes, insurance, and certain other expenses including common area expenses.
(10) For this Property, leases with Hughes Space & Communications for approximately 101,000 rentable square feet are written on a full service gross basis except that there is no Expense Stop.
(11) This Property is an Acquisition Property.
(12) For this Property, the lease is written on a triple net basis.
(13) This Industrial Property was vacant until April 1995. The tenant began paying rent in mid-October 1995 at an annual rate of $4.86 per rentable square foot.
(14) The tenant subleased this Industrial Property on May 15, 1996 to RGB Systems, Inc. (doing business as Extron Electronics), the tenant of the Property located at 1230 S. Lewis Street, Anaheim, California, which is adjacent to this Property. The sublease is at an amount less than the current lease rate, and the tenant is paying the difference between the current lease rate and the sublease rate. The lease and the sublease terminate in April 1998. Extron Electronics has executed a lease for this space from May 1998 through April 2005 at the current lease rate. Extron Electronics continues to occupy the space located at 1230 S. Lewis Street.
(15) This lease terminates on December 31, 1996.
(16) This Industrial Property was originally designed for multi-tenant use and currently is leased to a single tenant and utilized as an indoor multi- vendor retail marketplace.
(17) The leases for this Industrial Property are written on a modified triple net basis, with the tenants responsible for estimated allocated common area expenses.

14

THE COMPANY'S SOUTHERN CALIFORNIA SUBMARKETS

The Company retained Robert Charles Lesser & Co. ("Lesser"), nationally recognized experts in real estate consulting and urban economics, to study the Company's Southern California submarkets, and the discussion of such submarkets below is based upon Lesser's findings. While the Company believes that these estimates of economic trends are reasonable, there can be no assurance that these trends will in fact continue.

The Company's Office and Industrial Properties are primarily located in Los Angeles, Orange and Ventura Counties which, together with Riverside and San Bernardino Counties, comprise the second largest Consolidated Metropolitan Statistical Area in the United States. Management believes that the region's economy, which in 1994 commenced recovery from a four-year economic recession, and the continuing growth in the region's foreign trade, tourism and entertainment industries, provide an attractive environment for owning and operating Class A office and industrial properties since occupancy rates and asking rents generally are increasing. In addition, since 1992 there has been virtually no increase in the region's office space, while the region's demand for quality industrial space and low vacancy rates has spurred modest new construction of industrial properties.

Vacancy rates in the office space market in the Southern California Area are trending downward from a high in 1991 and 1992 of nearly 20.0% to a level at the end of 1996 of under 17.0%. At September 30, 1996, the vacancy rate for the Southern California Area Office Properties was approximately 6.9%. Vacancy rates in the industrial space market in the Southern California Area have decreased from a high of nearly 14% in 1992 to approximately 7.6% at December 31, 1996. At September 30, 1996, the vacancy rate for the Southern California Area Industrial Properties was approximately 7.0%.

As of December 31, 1995, the Southern California Area had a total population of approximately 15.6 million people which accounted for approximately 5.9% of the total U.S. population. Beginning in 1990, annual population growth in the region has averaged approximately 217,000 persons. Of the total population at December 31, 1995, approximately 9.2 million and 2.6 million persons lived in Los Angeles and Orange Counties, respectively, the counties in which all but five of the Properties are located. Annual estimated growth in population over the next five years in these counties is expected to be approximately 94,000 and 32,000 persons, respectively. See "Business and Properties--The Company's Southern California Submarkets."

THE FINANCING

The Company, on behalf of the Operating Partnership, has obtained a written commitment for mortgage loans of $96.0 million (the "Mortgage Loans"), the closing of which is a condition to the consummation of the Offering. The proceeds of the Mortgage Loans will principally be used to repay existing indebtedness on the Properties. The Mortgage Loans consist of: (i) an $84.0 million mortgage loan secured by certain of the Properties (the "$84.0 Million Loan") and (ii) a $12.0 million mortgage loan secured by the SeaTac Office Center (the "SeaTac Loan"). The $84.0 Million Loan requires monthly principal and interest payments based on a fixed rate of 8.2%, amortizing over a 25-year period, and matures in 2005. The Company presently anticipates that the $84.0 Million Loan will be incurred by a limited partnership which is wholly-owned by the Company and the Operating Partnership and structured to be a "bankruptcy remote" financing vehicle. The Properties to be pledged as collateral for the $84.0 Million Loan will be transferred to such limited partnership. The SeaTac Loan requires monthly payment of interest computed at a variable rate and has a term of six months. Principal and interest under the SeaTac Loan will be full recourse to the Company. The Company has financed the SeaTac Office Center in this manner in order to provide flexibility to obtain additional financing secured by the SeaTac Office Center if the Company leases additional space at this Property.

The Company is currently negotiating a $100.0 million revolving Credit Facility (the Credit Facility, together with the Mortgage Loans, the "Financing") which the Company, on behalf of the Operating

15

Partnership, expects to enter into shortly after the consummation of the Offering. The availability of funds under the Credit Facility is expected to be subject to the value of collateral securing the facility and the Company's compliance with a number of customary financial and other covenants on an ongoing basis. The Company expects that, initially, approximately $50.0 million will be available under the Credit Facility. The Company also will have working capital cash reserves of approximately $20.0 million and capital expenditure cash reserves of approximately $2.3 million upon consummation of the Offering. The Credit Facility and the working capital cash reserves will be used primarily to finance acquisitions of additional properties. The Credit Facility will also be available to refinance the SeaTac Loan. Payment of principal and interest on the Credit Facility is expected to be secured by certain of the Properties. In addition, borrowings under the Credit Facility are expected to be recourse obligations to the Company and the Operating Partnership.

If the initial public offering price for the Common Stock is less than the assumed offering price of $20.00 per share, the Company expects to make up any shortfall between the aggregate net proceeds of the Offering and the Mortgage Loans, and the intended uses thereof, by reducing its working capital cash reserves. See "Use of Proceeds."

DISTRIBUTION POLICY

The Company presently intends to make regular quarterly distributions to holders of its Common Stock. The first distribution, for the period commencing upon the consummation of the Offering and ending March 31, 1997, is anticipated to be approximately $ per share (which is equivalent to a quarterly distribution of $.3875 per share or an annual distribution of $1.55 per share) which results in an initial annual distribution rate of 7.75%, based on an initial public offering price of $20.00 per share. The Company does not expect to change its estimated distribution rate if any of the Underwriters' over- allotment option is exercised. The Company currently expects to distribute approximately 93.6% of estimated cash available for distribution for the 12 months following the consummation of the Offering. Units and shares of Common Stock will receive equal distributions. The Board of Directors may vary the percentage of cash available for distribution which is distributed if the actual results of operations, economic conditions or other factors differ from the assumptions used in the Company's estimates.

The Company established its initial distribution rate based on estimated cash flow for the 12 months following the consummation of the Offering and the Formation Transactions which the Company anticipates to be available for distribution, taking into account rents under existing leases, estimated operating expenses, capital improvements, debt service requirements, known contractual commitments, and estimated amounts for recurring tenant improvements and leasing commissions. To maintain its qualification as a REIT, the Company must make annual distributions to stockholders of at least 95% of its taxable income, determined without regard to the deduction for dividends paid and by excluding any net capital gains. Under certain circumstances, the Company may be required to make distributions in excess of cash flow available for distribution to meet such distribution requirements. See "Distribution Policy."

The Company's estimate of the initial distribution rate for the Common Stock was based on the Company's estimate of cash available for distribution, which is being made solely for the purpose of setting the initial distribution rate and is not intended to be a projection or forecast of the Company's results of operations or of its liquidity. The Company believes that its estimate of cash available for distribution constitutes a reasonable basis for setting the initial distribution rate. However, no assurance can be given that the Company's estimate will be accurate. See "Risk Factors--Distribution Payout Percentage."

16

TAX STATUS OF THE COMPANY

The Company intends to elect to be taxed as a REIT under Sections 856 through 860 of the Internal Revenue Code of 1986, as amended (the "Code"), commencing with its taxable year ending December 31, 1997 and believes its organization and proposed method of operation will enable it to meet the requirements for qualification as a REIT. To maintain REIT status, an entity must meet a number of organizational and operational requirements, including a requirement that it currently distribute at least 95% of its REIT taxable income (determined without regard to the dividends paid deduction and by excluding net capital gains) to its stockholders. As a REIT, the Company generally will not be subject to federal income tax on net income it distributes currently to its stockholders. If the Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax at regular corporate rates and may not be able to qualify as a REIT for the four subsequent taxable years. See "Risk Factors--Adverse Consequences of Failure to Qualify as a REIT" and "Federal Income Tax Considerations." Even if the Company qualifies for taxation as a REIT, the Company may be subject to certain federal, state and local taxes on its income and property. In addition, the Services Company will be subject to federal and state income tax at regular corporate rates on its net income.

THE OFFERING

Common Stock Offered Hereby..  11,300,000 shares
Common Stock Outstanding af-
 ter the Offering............  14,052,374 shares(/1/)
Use of Proceeds..............  Together with the net proceeds of the Mortgage
                               Loans, repayment of approximately $229.5 million
                               (including accrued interest and loan fees) of
                               existing mortgage and other indebtedness,
                               approximately $49.0 million for the purchase of
                               the Acquisition Properties and the remaining
                               approximately $27.2 million to be available for
                               expenses of the Formation Transactions, expenses
                               of the Financing, expenses of the Offering and
                               as working capital.
NYSE symbol..................  KRC


(1) Includes 2,692,374 Units (calculated on an as-exchanged basis) issued in connection with the Formation Transactions and 60,000 restricted shares of Common Stock to be issued to Richard E. Moran Jr., Executive Vice President, Chief Financial Officer and Secretary of the Company (but not a Continuing Investor) pursuant to the Stock Incentive Plan, but excludes 1,400,000 additional shares of Common Stock reserved for issuance as restricted shares of Common Stock, or upon the exercise of options granted, pursuant to the Stock Incentive Plan (as defined herein). See "Management-- Stock Incentive Plan" and "Shares Eligible for Future Sale."

17

SUMMARY FINANCIAL DATA

The following table sets forth certain financial data on a pro forma basis for the Company, and on an historical basis for the Kilroy Group, which consist of the combined financial statements of the Kilroy Group (the "Combined Financial Statements") whose financial results will be consolidated in the historical and pro forma financial statements of the Company. The financial data should be read in conjunction with the historical and pro forma financial statements and notes thereto included in this Prospectus. The combined historical summary financial data as of December 31, 1994, 1995 and September 30, 1996 and for each of the three years in the period ended December 31, 1995 and the nine months ended September 30, 1995 and 1996 have been derived from the Combined Financial Statements of the Kilroy Group audited by Deloitte & Touche LLP, independent public accountants, whose report with respect thereto is included elsewhere in this Prospectus. The selected combined historical financial and operating information as of December 31, 1993, 1992 and 1991, and for the years ended December 31, 1992 and 1991, have been derived from the unaudited Combined Financial Statements of the Kilroy Group and, in the opinion of management, include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the operating information for the unaudited periods. The pro forma data assume the completion of the Formation Transactions, including acquisition of the Acquisition Properties and the consummation of the Offering (based upon the midpoint of the range of the initial public offering price set forth on the cover page of this Prospectus) and the Financing, and use of the aggregate net proceeds therefrom as described under "Use of Proceeds" as of the beginning of the periods presented for the operating data and as of the balance sheet date for the balance sheet data. The pro forma financial data does not give effect to the recent extension of the tenant lease with Hughes Space & Communications with respect to space leased in the Office Property located at 2250 E. Imperial Highway, El Segundo, California and a portion of the space leased in the Office Property located at 2240 E. Imperial Highway, El Segundo, California. The pro forma financial data are not necessarily indicative of what the actual financial position or results of operations of the Company would have been as of and for the periods indicated, nor does it purport to represent the future financial position and results of operations.

18

THE COMPANY (PRO FORMA) AND KILROY GROUP (HISTORICAL)
(IN THOUSANDS, EXCEPT PER SHARE DATA)

                               NINE MONTHS ENDED
                                 SEPTEMBER 30,                             YEAR ENDED DECEMBER 31,
                         --------------------------------  ------------------------------------------------------------
                                    COMBINED HISTORICAL                           COMBINED HISTORICAL
                         PRO FORMA  ---------------------  PRO FORMA --------------------------------------------------
                           1996        1996        1995      1995      1995       1994       1993      1992      1991
                         ---------  ------------ --------  --------- ---------  ---------  --------  --------  --------
STATEMENT OF OPERATIONS
 DATA:
 Rental income.......... $ 30,635   $   25,156   $ 24,056   $39,141  $  32,314  $  31,220  $ 34,239  $ 32,988  $ 29,300
 Tenant reimbursements..    3,326        2,583      2,377     3,886      3,002      1,643     4,916     5,076     5,416
 Parking income.........    1,317        1,317      1,193     1,582      1,582      1,357     1,360     1,286     1,358
 Development and
  management fees.......      --           580        926       --       1,156        919       751       882       779
 Sale of air rights.....      --           --       4,456     4,456      4,456        --        --        --        --
 Lease termination
  fees..................      --           --         --        100        100        300     5,190        48       --
 Other income...........      364           65        211       705        298        784       188       221       206
                         --------   ----------   --------   -------  ---------  ---------  --------  --------  --------
 Total revenues.........   35,642       29,701     33,219    49,870     42,908     36,223    46,644    40,501    37,059
                         --------   ----------   --------   -------  ---------  ---------  --------  --------  --------
 Property expenses......    6,411        5,042      5,045     8,668      6,834      6,000     6,391     6,384     6,971
 Real estate taxes
  (refunds).............    1,457          970      1,088     2,002      1,416       (448)    2,984     3,781     2,377
 General and
  administrative
  expense...............    3,062        1,607      1,554     4,083      2,152      2,467     1,113     1,115       841
 Ground lease...........      832          579        542     1,127        789        913       941       854       726
 Development expenses...      --           584        564       --         737        468       581       429       255
 Option buy-out cost....    3,150        3,150        --        --         --         --        --        --        --
 Interest expense.......    5,937       16,234     18,660     7,916     24,159     25,376    25,805    26,293    26,174
 Depreciation and
  amortization..........    7,668        6,838      7,171    10,580      9,474      9,962    10,905    10,325     9,116
                         --------   ----------   --------   -------  ---------  ---------  --------  --------  --------
 Total expenses.........   28,517       35,004     34,624    34,376     45,561     44,738    48,720    49,181    46,460
                         --------   ----------   --------   -------  ---------  ---------  --------  --------  --------
 Income (loss) before
  equity in income of
  subsidiary, minority
  interest and
  extraordinary item....    7,125       (5,303)    (1,405)   15,494     (2,653)    (8,515)   (2,076)   (8,680)   (9,401)
 Equity in income (loss)
  of subsidiary.........      (58)                    --        136        --         --        --        --        --
 Minority interest......   (1,357)                    --     (3,001)       --         --        --        --        --
 Extinguishment of
  debt..................      --        20,095     15,267       --      15,267      1,847       --        --        --
                         --------   ----------   --------   -------  ---------  ---------  --------  --------  --------
 Net income (loss)...... $  5,710   $   14,792   $ 13,862   $12,629  $  12,614  $  (6,668) $ (2,076) $ (8,680) $ (9,401)
                         ========   ==========   ========   =======  =========  =========  ========  ========  ========
 Pro forma net income
  per share(1).......... $   0.50                           $  1.11
                         ========                           =======
                                                                                      DECEMBER 31,
                                                                     --------------------------------------------------
                          SEPTEMBER 30, 1996                                      COMBINED HISTORICAL
                         -----------------------                     --------------------------------------------------
                                     COMBINED
                         PRO FORMA  HISTORICAL                         1995       1994       1993      1992      1991
                         ---------  ------------                     ---------  ---------  --------  --------  --------
BALANCE SHEET DATA:
 Real estate assets,
  before accumu-
  lated depreciation and
  amortization.......... $285,150   $  227,127                       $ 224,983  $ 223,821  $222,056  $221,423  $220,363
 Total assets...........  210,603      131,062                         132,857    143,251   148,386   161,008   169,147
 Mortgages and loans....   96,000      224,046                         233,857    250,059   248,043   250,792   245,645
 Total liabilities......  109,981      244,285                         254,683    273,585   263,346   263,156   254,786
 Minority interest......   19,319
 Stockholders' equity
  (deficit).............   81,303     (113,223)                       (121,826)  (130,334) (114,960) (102,148)  (85,639)

                           NINE MONTHS ENDED SEPTEMBER 30,             YEAR ENDED DECEMBER 31,
                          -----------------------------------  ------------------------------------------
                                        COMBINED HISTORICAL                    COMBINED HISTORICAL
                          PRO  FORMA   ----------------------  PRO FORMA  -------------------------------
                             1996         1996        1995       1995       1995       1994       1993
                          -----------------------  ----------  ---------  ---------  ---------  ---------
OTHER DATA:
 Funds from
  Operations(2).........     $18,243       $4,685      $1,310    $22,018     $2,365     $1,447     $3,639
 Cash flows from:
 Operating activities...         --         5,528       9,270        --      10,071      6,607     11,457
 Investing activities...         --        (2,140)       (446)       --      (1,162)    (1,765)     2,028
 Financing activities...         --        (3,388)     (8,824)       --      (8,909)    (4,842)   (13,485)
 Office Properties:
 Square footage.........   2,037,414    1,688,383   1,688,383  2,037,414  1,688,383  1,688,383  1,688,383
 Occupancy..............        79.8%        76.3%       72.8%      77.0%      72.8%      73.3%      81.0%
 Industrial Properties:
 Square footage.........   1,337,697      916,570     916,570  1,337,697    916,570    916,570    916,570
 Occupancy..............        93.7%        90.8%       98.4%      92.2%      98.4%      79.7%      77.6%


(1) Pro forma net income per share equals pro forma net income divided by the 11,360,000 shares of Common Stock outstanding after the Offering.
(2) As defined by the National Association of Real Estate Investment Trusts ("NAREIT"), Funds from Operations represents net income (loss) before minority interest of unit holders (computed in accordance with GAAP), excluding gains (or losses) from debt restructuring and sales of property, plus real estate related depreciation and amortization (excluding amortization of deferred financing costs) and after adjustments for unconsolidated partnerships and joint ventures. Non-cash adjustments to Funds from Operations were as follows: in all periods, depreciation and amortization; in 1996, 1995 and 1994, gains on extinguishment of debt; and in pro forma 1996 and 1995, non-cash compensation. Further, in 1996 and 1995 non-recurring items (sale of air rights and option buy-out cost) were excluded. Management considers Funds from Operations an appropriate measure of performance of an equity REIT because industry analysts have accepted it as such. The Company computes Funds from Operations in accordance with standards established by the Board of Governors of NAREIT in its March 1995 White Paper, which may differ from the methodology for calculating Funds from Operations utilized by other equity REITs and, accordingly, may not be comparable to such other REITs. Further, Funds from Operations does not represent amounts available for management's discretionary use because of needed capital replacement or expansion, debt service obligations, or other commitments and uncertainties. See notes (9), (10) and (11) under the caption "Distribution Policy" and the notes to the historical financial statements of the Kilroy Group. Funds from Operations should not be considered as an alternative for net income as a measure of profitability nor is it comparable to cash flows provided by operating activities determined in accordance with GAAP.

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RISK FACTORS

An investment in the shares of Common Stock involves various material risks. Prospective investors should carefully consider the following risk factors, in addition to the other information set forth in this Prospectus, in connection with an investment in the shares of Common Stock offered hereby.

CONFLICTS OF INTEREST

Certain Limited Partner Approval Rights. While the Company will be the sole general partner of the Operating Partnership, and generally will have full and exclusive responsibility and discretion in the management and control of the Operating Partnership, certain provisions of the Partnership Agreement place limitations on the Company's ability to act with respect to the Operating Partnership. The Partnership Agreement provides that if the limited partners own at least 5% of the outstanding Units (including Units held by the Company which will represent 80.8% of all Units outstanding upon consummation of the Offering), the Company shall not, on behalf of the Operating Partnership, take any of the following actions without the prior consent of the holders of more than 50% of the Units representing limited partner interests (excluding Units held by the Company): (i) dissolve the Operating Partnership, other than incident to a merger or sale of substantially all of the Company's assets; or
(ii) prior to the seventh anniversary of the consummation of the Offering, sell the Office Property located at 2260 E. Imperial Highway at Kilroy Airport Center at El Segundo, other than incident to a merger or sale of substantially all of the Company's assets. Furthermore, the Partnership Agreement provides that, except in connection with certain transactions, the Company may not voluntarily withdraw from the Operating Partnership, or transfer or assign its interest in the Operating Partnership, without the consent of the holders of at least 60% of the Units (including Units held by the Company) and without meeting certain other criteria with respect to the consideration to be received by the limited partners. In addition, the Company has agreed to use its commercially reasonable efforts to structure certain merger transactions to avoid causing the limited partners to recognize gain for federal income tax purposes by virtue of the occurrence of or their participation in such transactions. The restrictions on the Company's ability to act as described above may result in the Company being precluded from taking action which the Board of Directors believes is in the best interest of all stockholders. See "Partnership Agreement of the Operating Partnership--Transferability of Interests" and "--Certain Limited Partner Approval Rights."

Tax Consequences Upon Sale or Refinancing. Unlike persons acquiring shares of Common Stock in the Offering, holders of Units may suffer different and more adverse tax consequences than the Company upon the sale or refinancing of the Properties owned by the Operating Partnership, and therefore such holders may have different objectives regarding the appropriate pricing and timing of any sale or refinancing of such Properties. While the Company, as the sole general partner of the Operating Partnership, will have the authority (subject to certain limited partner approval rights described below) to determine whether and on what terms to sell or refinance each Property owned solely by the Operating Partnership, those directors and officers of the Company who hold Units may seek to influence the Company not to sell or refinance the Properties, even though such a sale might otherwise be financially advantageous to the Company, or may seek to influence the Company to refinance a Property with a higher level of debt. The Partnership Agreement provides that if the limited partners own at least 5% of the outstanding Units (including Units held by the Company which will represent 80.8% of all Units outstanding upon consummation of the Offering), the Company shall not, on behalf of the Operating Partnership, take any of the following actions without the prior consent of the holders of more than 50% (excluding Units held by the Company) of the Units representing limited partner interests: (i) dissolve the Operating Partnership, other than incident to a merger or sale of substantially all of the Company's assets; or (ii) prior to the seventh anniversary of the consummation of the Offering, sell the Office Property at 2260 E. Imperial Highway at Kilroy Airport Center at El Segundo, other than incident to a merger or sale of substantially all of the Company's assets. The Operating Partnership will also use commercially reasonable efforts to cooperate with the limited partners to minimize any taxes payable in connection with any repayment, refinancing, replacement or restructuring of indebtedness, or any sale, exchange or any other disposition of assets, of the Operating Partnership. See "Partnership Agreement of the Operating Partnership--Transferability of Interests" and "--Certain Limited Partner Approval Rights."

20

Failure to Enforce Terms of Certain Agreements. As recipients of Units in the Formation Transactions, John B. Kilroy, Sr., as Chairman of the Company's Board of Directors, and John B. Kilroy, Jr., as the Company's President and Chief Executive Officer and a director of the Company, will have a conflict of interest with respect to their obligations as directors or officers of the Company to enforce the terms of the agreements relating to the transfer to the Operating Partnership of their interests in the Properties and other assets to be acquired by the Company and relating to the Company's option to purchase certain additional properties owned by entities controlled by them. See "Business and Properties--Development, Leasing and Management Activities-- Excluded Properties." The failure to enforce the material terms of those agreements (which would require the approval of the Independent Directors) could result in a monetary loss to the Company, which loss could have a material effect on the Company's financial condition or results of operations. While certain Continuing Investors will provide indemnities in connection with such transfers, such indemnities would be impaired to the extent that such Continuing Investors have other obligations, including obligations for taxes arising from the Formation Transactions or prior transactions, which they may not have sufficient assets to satisfy.

Policies with Respect to Conflicts of Interest. The Company has adopted certain policies designed to eliminate or minimize conflicts of interest. These policies include (i) provisions in the Company's Articles of Incorporation and Bylaws which require that at least a majority of the directors be Independent Directors, (ii) provisions in the Company's Bylaws which require that a majority of the Independent Directors approve transactions between the Company and members of the Kilroy Group, including the enforcement of terms of the transfers of the Properties to the Operating Partnership and the exercise of the options with respect to the Excluded Properties, and the sale or refinancing of the Properties and (iii) the requirement that the members of the Board of Directors that are Continuing Investors (John B. Kilroy, Jr. and John B. Kilroy, Sr.) enter into noncompetition agreements with the Company. The provisions contained in the Company's Articles of Incorporation can be modified only with the approval of two-thirds of the shares of the Company's capital stock outstanding and entitled to vote thereon, and the provisions contained in the Company's Bylaws can be modified only with the approval of a majority of either the Company's Board of Directors or the shares of the Company's capital stock outstanding and entitled to vote thereon. However, there can be no assurance that these policies will not be changed in the future or that they otherwise always will be successful in eliminating the influence of such conflicts, and, if they are not successful, decisions could be made that might fail to reflect fully the interests of all stockholders. See "Policies with Respect to Certain Activities--Conflict of Interest Policies."

Competitive Real Estate Activities of Management. John B. Kilroy, Sr. and John B. Kilroy, Jr. will have controlling ownership interests in a complex of three office properties which are located in the El Segundo submarket in which four of the Office Properties and four of the Industrial Properties are located. These properties will be managed by the Operating Partnership and certain of the Company's officers, directors and employees will spend an immaterial portion of their time and effort managing these interests and Calabasas Park Centre, an undeveloped approximately 66-acre site (representing approximately 45 developable acres net of acreage required for streets and contractually required open areas). The Kilroy Group is actively marketing for sale all but 18 acres of Calabasas Park Centre. Certain of the Company's officers, directors and employees will spend an immaterial amount of time in connection with any sales of such parcels.

Each of these properties is currently owned by partnerships owned and controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr. The properties located on North Sepulveda Boulevard in El Segundo will be managed by the Operating Partnership pursuant to a management agreement on market terms. With respect to Calabasas Park Centre, the officers, directors and employees of the Company will spend an immaterial amount of time in connection with the entitlement, marketing and sales of such parcels. Calabasas Park Centre will be managed by the Services Company pursuant to a management agreement on market terms. The implementation of the arrangements relating to each of these properties will involve a conflict of interest with John B. Kilroy, Sr. and John B. Kilroy, Jr. The Kilroy Group holds certain other real estate interests which are not being contributed to the Company as part of the Formation Transactions. All of such other real estate interests relate to miscellaneous properties and property rights that the Company believes are not of a type appropriate for inclusion in the

21

Company's portfolio and the properties are not consistent with the Company's strategy. See "Business and Properties--Excluded Properties."

ADVERSE CONSEQUENCES OF FAILURE TO QUALIFY AS A REIT

Tax Liabilities as a Consequence of Failure to Qualify as a REIT. The Company intends to operate so as to qualify as a REIT under the Code, commencing with its taxable year ending December 31, 1997. Although management believes that it will be organized and will operate in such a manner, no assurance can be given that the Company will be organized or will be able to operate in a manner so as to qualify or remain so qualified. Qualification as a REIT involves the satisfaction of numerous requirements (some on an annual and others on a quarterly basis) established under highly technical and complex Code provisions for which there are only limited judicial and administrative interpretations, and involves the determination of various factual matters and circumstances not entirely within the Company's control. For example, in order to qualify as a REIT, at least 95% of the Company's gross income in any year must be derived from qualifying sources and the Company must pay distributions to stockholders aggregating annually at least 95% of its REIT taxable income (determined without regard to the dividends paid deduction and by excluding net capital gains). The complexity of these provisions and of the applicable Treasury Regulations that have been promulgated under the Code is greater in the case of a REIT that holds its assets in partnership form. No assurance can be given that legislation, new regulations, administrative interpretations or court decisions will not significantly change the tax laws with respect to qualification as a REIT or the federal income tax consequences of such qualification. The Company is relying on the opinion of Latham & Watkins, tax counsel to the Company, regarding various issues affecting the Company's ability to qualify, and continue to qualify, as a REIT. See "Federal Income Tax Consequences--Taxation of the Company" and "Legal Matters." Such legal opinion is based on various assumptions and factual representations by the Company regarding the Company's ability to meet the various requirements for qualification as a REIT, and no assurance can be given that actual operating results will meet these requirements. Such legal opinion is not binding on the Internal Revenue Service ("IRS") or any court.

Among the requirements for REIT qualification is that the value of any one issuer's securities held by a REIT may not exceed 5% of the REIT's total assets on certain testing dates. See "Federal Income Tax Consequences-- Taxation of the Company--Requirements for Qualification." The Company believes that its allocable share of the aggregate value of the securities of the Services Company to be held by the Operating Partnership will be less than 5% of the value of the Company's total assets, based on the initial allocation of Units among participants in the Formation Transactions and the Company's opinion regarding the maximum value that could be assigned to the expected assets and net operating income of the Services Company after the Offering. In rendering its opinion as to the qualification of the Company as a REIT, Latham & Watkins is relying on the conclusions of the Company regarding the value of the Services Company.

If the Company were to fail to qualify as a REIT in any taxable year, the Company would be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate rates and would not be allowed a deduction in computing its taxable income for amounts distributed to its stockholders. Moreover, unless entitled to relief under certain statutory provisions, the Company also would be disqualified from treatment as a REIT for the four taxable years following the year during which qualification is lost. This treatment would reduce the net earnings of the Company available for investment or distribution to stockholders because of the additional tax liability to the Company for the years involved. In addition, distributions to stockholders would no longer be required to be made. See "Federal Income Tax Consequences--Taxation of the Company-- Requirements for Qualification."

Other Tax Liabilities. Even if the Company qualifies for and maintains its REIT status, it will be subject to certain federal, state and local taxes on its income and property. For example, if the Company has net income from a prohibited transaction, such income will be subject to a 100% tax. In addition, the Company's net income, if any, from the third-party development conducted through the Services Company will be subject to federal income tax at regular corporate tax rates. See "Federal Income Tax Consequences--Services Company."

22

RISKS OF DEVELOPMENT BUSINESS AND RELATED ACTIVITIES BEING CONDUCTED BY THE
SERVICES COMPANY

Tax Liabilities. The Services Company will be subject to federal and state income tax on its taxable income at regular corporate rates. Any federal, state or local income taxes that the Services Company is required to pay will reduce the cash available for distribution by the Company to its stockholders.

Adverse Consequences of Lack of Control Over the Businesses of the Services Company. To comply with the REIT asset tests that restrict ownership of shares of other corporations, upon consummation of the Offering, the Operating Partnership will own 100% of the nonvoting preferred stock of the Services Company (representing approximately 95.0% of its economic value) and John B. Kilroy, Sr. and John B. Kilroy, Jr. will own all the outstanding voting common stock of the Services Company (representing approximately 5.0% of its economic value). This ownership structure is necessary to permit the Company to share in the income of the Services Company and also maintain its status as a REIT. Although it is anticipated that the Company will receive substantially all of the economic benefit of the businesses carried on by the Services Company through the Company's right to receive dividends through the Operating Partnership, the Company will not be able to elect directors or officers of the Services Company and, therefore, the Company will not have the ability to influence the operations of the Services Company or require that the Services Company's board of directors declare and pay a cash dividend on the nonvoting preferred stock of the Services Company held by the Operating Partnership. As a result, the board of directors and management of the Services Company may implement business policies or decisions that would not have been implemented by persons controlled by the Company and that are adverse to the interests of the Company or that lead to adverse financial results, which could adversely impact the Company's net operating income and cash flow. See "Formation and Structure of the Company."

Adverse Consequence of REIT Status on the Businesses of the Services Company. Certain requirements for REIT qualification may in the future limit the Company's ability to receive increased distributions from the fee development operations conducted and related services offered by the Services Company. See "--Adverse Consequences of Failure to Qualify as a REIT."

NO APPRAISALS; CONSIDERATION TO BE PAID FOR PROPERTIES AND OTHER ASSETS MAY EXCEED THEIR FAIR MARKET VALUE. No independent valuations or appraisals of the Properties were obtained in connection with the Formation Transactions. The valuation of the Company has been determined by considering the enterprise value of the Company as a going concern based primarily upon a capitalization of estimated and anticipated Funds from Operations (as defined) and cash available for distribution and the other factors discussed in this Prospectus under "Distribution Policy" and "Underwriting," rather than an asset-by-asset valuation based on historical cost or current market value. This methodology has been used because management believes it is appropriate to value the Company as an ongoing business rather than with the view to values that could be obtained from a liquidation of the Company or of individual assets owned by the Company. Accordingly, there can be no assurance that the consideration paid by the Company will not exceed the fair market value of the Properties and other assets acquired by the Company. A valuation of the Company determined solely by appraisals of the Properties and other assets of the Company may result in a significantly lower valuation of the Company from that which is reflected by the initial public offering price per share set forth on the cover of this Prospectus, which also takes into account the businesses of the Services Company, the earnings of the Properties and the going concern value of the Company. See "Underwriting." Since the liquidation value of the Company is likely to be significantly less than the value of the Company as a going concern, stockholders may suffer a significant loss in the value of their shares if the Company were required to sell its assets.

The valuation of the Company's development, leasing and management services business has been derived, in part, from a capitalization of the revenue derived from the Company's contracts with third parties for real estate development, leasing and management services. Upon consummation of the Offering, the Company expects to provide through the Operating Partnership leasing and management services, and through the Services Company development services.

The consideration paid and the allocation of Units of the Operating Partnership among the participants in connection with the Formation Transactions were not determined by arm's-length negotiations. Since no

23

appraisals of the Properties and other assets were obtained, the value of the Units allocated to participants in the Formation Transactions may exceed the fair market value of their ownership of such Properties and assets. The terms of the option agreements relating to the Excluded Properties also were not determined by arm's-length negotiations, and such terms may be less favorable to the Company than those that may have been obtained through negotiations with a third party. In addition, approximately $37.2 million of mortgage indebtedness guaranteed by John B. Kilroy, Sr., of which $8.7 million is also guaranteed by John B. Kilroy, Jr., and personal indebtedness of approximately $3.4 million of John B. Kilroy, Sr., will be repaid in connection with the Formation Transactions. See "--Conflicts of Interest," "Use of Proceeds" and "Formation and Structure of the Company."

CASH FLOW FROM DEVELOPMENT ACTIVITIES IS UNCERTAIN. A portion of the Company's anticipated cash flow may be generated from development activities which are partially dependent on the availability of development opportunities and which are subject to the risks inherent with development and general economic conditions. In addition, development activities will be subject to limitations imposed by the REIT tests. See "Federal Income Tax Consequences-- Taxation of the Company--Income Tests." There can be no assurance that the Company will realize such anticipated cash flows. See "Risk Factors--Real Estate Investment Considerations--Risks of Real Estate Acquisition and Development." Also, these development activities generally will be conducted by the Services Company. Accordingly, cash flow from these activities will be further dependent upon the decision of the Services Company's board of directors to declare and pay a cash dividend on the nonvoting preferred stock held by the Operating Partnership. See "--Risks of Development Business and Related Activities Being Conducted by the Services Company."

DEPENDENCE ON SOUTHERN CALIFORNIA MARKET. Twenty-two of the 26 Properties, comprising an aggregate of approximately 2.7 million rentable square feet (representing approximately 80.4% of the aggregate rentable square feet of all of the Properties), are located in Southern California. Consequently, the Company's performance will be linked to economic conditions and the demand for office, industrial and retail space in this region. The Southern California economy has experienced significant recessionary conditions in the past several years, primarily as a result of the downsizing of the aerospace and defense industries; there is still a dependence on these industries in the Company's El Segundo and Long Beach Airport area submarkets. The recessionary conditions resulted in a general increase in vacancies and a general decrease in net absorption and rental rates in the Company's El Segundo and Long Beach Airport area submarkets. See "Business and Properties--The Company's Southern California Submarkets." Any decline in the Southern California economy generally may result in a material decline in the demand for office, industrial and retail space, have a material adverse effect greater than if the Company had a more geographically diverse portfolio of properties, and may materially and adversely affect the ability of the Company to make distributions to stockholders. See "Business and Properties--The Company's Southern California Submarkets."

In addition, eight Office Properties, representing approximately 64.9% of the aggregate office space of all of the Office Properties, are located in two office parks in El Segundo, California, and Long Beach, California, respectively.

DEPENDENCE ON SIGNIFICANT TENANTS. The Company's ten largest office tenants represented approximately 46.3% of annual base rent for the year ended December 31, 1995 (giving pro forma effect to a recent extension of a lease with Hughes Space & Communications with respect to two of the Office Properties located at Kilroy Airport Center at El Segundo), and its ten largest industrial tenants represented approximately 16.1% of annual base rent for the same period. Of this amount, its largest tenant, Hughes Space & Communications, currently leases approximately 495,000 rentable square feet of office space in Kilroy Airport Center at El Segundo, representing approximately 25.3% of the Company's total base rent revenues for the year ended December 31, 1995 (giving pro forma effect to the Hughes Space & Communications lease extension). The base periods of the Hughes Space & Communications leases expire beginning in January 1999. The Company's revenues and cash available for distribution to stockholders would be disproportionately and materially adversely affected in the event of bankruptcy or insolvency of, or a downturn in the business of, or the nonrenewal of leases by, any of its significant tenants, or the renewal of such leases on terms less favorable to the Company than their current terms.

24

DISTRIBUTIONS TO STOCKHOLDERS AFFECTED BY MANY FACTORS. Distributions by the Company to its stockholders will be based principally on cash available for distribution from the Properties. Increases in base rent under the leases of the Properties or the payment of rent in connection with future acquisitions will increase the Company's cash available for distribution to stockholders. However, in the event of a default or a lease termination by a lessee, there could be a decrease or cessation of rental payments and thereby a decrease in cash available for distribution. In addition, the amount available to make distributions may decrease if properties acquired in the future yield lower than expected returns.

The distribution requirements for REITs under federal income tax laws may limit the Company's ability to finance future developments, acquisitions and expansions without additional debt or equity financing. If the Company incurs additional indebtedness in the future, it will require additional funds to service such indebtedness and as a result amounts available to make distributions may decrease. Distributions by the Company will also be dependent on a number of other factors, including the Company's financial condition, any decision to reinvest funds rather than to distribute such funds, capital expenditures, the annual distribution requirements under the REIT provisions of the Code and such other factors as the Company deems relevant. In addition, the Company may issue from time to time additional Units or shares of Common Stock in connection with the acquisition of properties or in certain other circumstances. No prediction can be made as to the number of such Units or shares of Common Stock which may be issued, if any, and, if issued, the effect on cash available for distribution on a per share basis to holders of Common Stock. Such issuances, if any, will have a dilutive effect on cash available for distribution on a per share basis to holders of Common Stock. See "The Company--Growth Strategies." The possibility exists that actual results of the Company may differ from the assumptions used by the Board of Directors in determining the initial distribution rate. In such event, the trading price of the Common Stock may be adversely affected.

To obtain the favorable tax treatment associated with REITs, the Company generally will be required to distribute to its stockholders at least 95% of its taxable income (determined without regard to the dividends paid deduction and by excluding net capital gains) each year. In addition, the Company will be subject to tax at regular corporate rates to the extent that it distributes less than 100% of its taxable income (including net capital gains) each year. The Company will also be subject to a 4% nondeductible excise tax on the amount, if any, by which certain distributions paid by it with respect to any calendar year are less than the sum of 85% of its ordinary income, 95% of its capital gain net income and 100% of its undistributed income from prior years.

The Company intends to make distributions to its stockholders to comply with the distribution requirements of the Code and to reduce exposure to federal income taxes and the nondeductible excise tax. Differences in timing between the receipt of income and the payment of expenses in arriving at taxable income and the effect of required debt amortization payments could require the Company to borrow funds on a short-term basis to meet the distribution requirements that are necessary to achieve the tax benefits associated with qualifying as a REIT.

REAL ESTATE INVESTMENT CONSIDERATIONS

General. Real property investments are subject to varying degrees of risk. The yields available from equity investments in real estate depend on the amount of income earned and capital appreciation generated by the related properties as well as the expenses incurred in connection therewith. If the Properties do not generate income sufficient to meet operating expenses, including debt service and capital expenditures, the ability to make distributions to the Company's stockholders could be adversely affected. Income from, and the value of, the Properties may be adversely affected by the general economic climate, local conditions such as oversupply of office, industrial or retail space or a reduction in demand for office, industrial or retail space in the area, the attractiveness of the Properties to potential tenants, competition from other office, industrial and retail buildings, and the ability of the Company to provide adequate maintenance and insurance and increased operating costs (including insurance premiums, utilities and real estate taxes). In addition, revenues from properties and real estate values are also affected by such factors as the cost of compliance with regulations and the potential for liability under applicable laws, including changes in tax laws, interest rate levels and the availability of financing.

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The Company's income would be adversely affected if a significant number of tenants were unable to pay rent or if office, industrial or retail space could not be rented on favorable terms. Certain significant expenditures associated with an investment in real estate (such as mortgage payments, real estate taxes and maintenance costs) generally are not reduced when circumstances cause a reduction in income from the investment.

Illiquidity of Real Estate. Real estate investments are relatively illiquid and, therefore, the Company has limited ability to vary its portfolio quickly in response to changes in economic or other conditions. In addition, the prohibition in the Code and related regulations on a REIT holding property for sale may affect the Company's ability to sell properties without adversely affecting distributions to the Company's stockholders.

Competition. The Company plans to expand, primarily through the acquisition and development of additional office and industrial buildings in Southern California and other markets where the acquisition and/or development of property would, in the opinion of management, result in a favorable risk- adjusted return on investment. There are a number of office and industrial building developers and real estate companies that compete with the Company in seeking properties for acquisition, prospective tenants and land for development. All of the Properties are in developed areas where there are generally other properties of the same type. Competition from other office, industrial and retail properties may affect the Company's ability to attract and retain tenants, rental rates and expenses of operation (particularly in light of the higher vacancy rates of many competing properties which may result in lower-priced space being available in such properties). The Company may be competing with other entities that have greater financial and other resources than the Company. During the two-year and nine-month period ended September 30, 1996, the Company's weighted average renewal rate, based on net rentable square footage, was 71.7% for the Properties located in the Southern California Area and 50.9% for the Properties overall. The lower overall retention rate is due primarily to the termination in 1993 of a lease for 211,000 square feet at the SeaTac Office Center.

Lease Expirations. Certain leases expiring during the first several years following the Offering are at rental rates higher than those attained by the Company in its recent leasing activity. Such leases, or other leases of the Company, may not be renewed or, if renewed, may be renewed at rental rates lower than rental rates in effect immediately prior to expiration. Decreases in the rental rates for the Company's properties, the failure of tenants to renew any such leases or the failure of the Company to re-lease any of the Company's space could materially adversely affect the Company and its ability to make distributions. During the three calendar years ending December 31, 1999, the Company will have expiring Office Property leases covering approximately 408,000 net rentable square feet, and Industrial Property leases covering approximately 92,900 net rentable square feet. For the year ended December 31, 1995, such leases had a weighted average annual base rent per net rentable square foot of approximately $18.81 and $5.97, respectively. For the nine-month period ended September 30, 1996, the Company entered into 31 Office Property lease transactions for an aggregate of approximately 342,000 net rentable square feet with a weighted average initial annual base rent per net rentable square foot of approximately $19.52 (excluding the Thousand Oaks Office Property where the Company entered into one lease transaction with an initial annual base rent per net rentable square foot of $24.00). For the 12- month period ending December 31, 1996, the Company entered into one Industrial Property lease transaction for approximately 62,500 net rentable square feet with an initial annual base rent per net rentable square foot of $6.36. See "Business and Properties--General" and "--Lease Expirations."

Ground Leases. The Company's eight Office Properties located at Kilroy Airport Center in Long Beach (assuming consummation of the acquisition of Kilroy Long Beach Phase I concurrent with the consummation of the Offering) and the SeaTac Office Center are held subject to ground leases. A default by the Company under the terms of a ground lease could result in the loss of Properties located on the respective parcel, with the landowner becoming the owner of such Properties unless the default under the lease is cured or waived. In addition, upon expiration of the ground leases, including the options thereon, there is no assurance that the Company will be able to negotiate new ground leases at all or, if any leases were renewed, that they will be on terms consistent with or more favorable than existing terms, which may result in the loss of the Properties or increased rental expense to the Company. The ground leases for the Kilroy Airport Center Long Beach

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will expire in 2035. See "Business and Properties--Office Properties--Kilroy Long Beach." The ground leases for the SeaTac Office Center (including renewal options) will expire in 2062. See "Business and Properties--Office Properties--SeaTac."

Capital Improvements. The Properties vary in age and require capital improvements regularly. If the cost of improvements, whether required to attract and retain tenants or to comply with governmental requirements, substantially exceeds management's expectations, cash available for distribution could be reduced.

Risks of Real Estate Acquisition and Development. The Company intends to actively seek to acquire office and industrial properties to the extent that they can be acquired on advantageous terms and meet the Company's investment criteria. Acquisitions of office and industrial properties entail risks that investments will fail to perform in accordance with expectations. Estimates of the costs of improvements to bring an acquired property up to standards established for the market position intended for that property may prove inaccurate. In addition, there are general investment risks associated with any new real estate investment.

In addition to the Development Properties, the Company will pursue other development opportunities both for ownership by the Company and on a fee basis. The real estate development business involves significant risks in addition to those involved in the ownership and operation of established office or industrial buildings, including the risks that financing may not be available on favorable terms for development projects and construction may not be completed on schedule or within budget, resulting in increased debt service expense and construction costs and delays in leasing such properties and generating cash flow. In addition, new development activities, regardless of whether or not they are ultimately successful, typically require a substantial portion of management's time and attention. Development activities are also subject to risks relating to the inability to obtain, or delays in obtaining, all necessary zoning, land-use, building, occupancy, and other required governmental permits and authorizations.

The Company anticipates that future acquisitions and developments will be financed, in whole or in part, through additional equity offerings, lines of credit and other forms of secured or unsecured financing. If new developments are financed through construction loans, there is a risk that, upon completion of construction, permanent financing for newly developed properties may not be available or may be available only on disadvantageous terms. Equity, rather than debt, financing of future acquisitions or developments could have a dilutive effect on the interests of existing stockholders of the Company.

While the Company has focused primarily on the development and ownership of office and industrial properties, the Company plans in the future to develop properties, part or all of which will be for retail use. In addition, while the Company has historically limited its ownership of properties primarily to the Southern California market, the Company in the future may expand its business to geographic markets other than Southern California, where the acquisition and/or development of property would, in the opinion of management, result in a favorable risk-adjusted return on investment. The Company will not initially possess the same level of familiarity with new types of commercial development or new markets, which could adversely affect its ability to acquire or develop properties in any new localities or to realize expected performance.

Uninsured Loss. Management believes that the Properties are covered by adequate comprehensive liability, rental loss and all-risk insurance provided by reputable companies and with commercially reasonable deductibles, limits and policy specifications customarily carried for similar properties. Certain types of losses, however, may be either uninsurable or not economically insurable, such as losses due to floods, riots or acts of war, or may be insured subject to certain limitations including large deductibles or copayments, such as losses due to seismic activity. See discussion of uninsured losses from seismic activity below. Should an uninsured loss or a loss in excess of insured limits occur, the Company could lose its investment in and anticipated profits and cash flow from a property and would continue to be obligated on any mortgage indebtedness or other obligations related to such property. Any such loss would adversely affect the Company and its ability to make distributions.

Uninsured Losses from Seismic Activity. The Properties are located in areas that are subject to earthquake activity. Although the Company expects to have earthquake insurance on a substantial portion of its Properties,

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such insurance will not be replacement cost and should any Property sustain damage as a result of an earthquake, or should losses exceed the amount of such coverage, the Company may incur uninsured losses or losses due to deductibles or co-payments on insured losses. See "Business and Properties-- Uninsured Losses from Seismic Activity."

Risks Involved in Property Ownership Through Partnerships and Joint Ventures. Although the Company will own fee simple interests in the Properties (other than Kilroy Long Beach and the SeaTac Office Center, which are held subject to long-term ground leases), in the future the Company may also participate with other entities in property ownership through joint ventures or partnerships. Partnership or joint venture investments may, under certain circumstances, involve risks not otherwise present, including the possibility that the Company's partners or co-venturers might become bankrupt, that such partners or co-venturers might at any time have economic or other business interests or goals which are inconsistent with the business interests or goals of the Company, and that such partners or co-venturers may be in a position to take action contrary to the instructions or the requests of the Company or contrary to the Company's policies or objectives, including the Company's policy with respect to maintaining its qualification as a REIT. The Company will, however, seek to maintain sufficient control of such partnerships or joint ventures to permit the Company's business objectives to be achieved. There is no limitation under the Company's organizational documents as to the amount of available funds that may be invested in partnerships or joint ventures.

REAL ESTATE FINANCING RISKS. The Company will be subject to the risks normally associated with debt financing, including the risk that the Company's cash flow will be insufficient to meet required payments of principal and interest, the risk that indebtedness on the Properties will not be refinanced at maturity or that the terms of such refinancing will not be as favorable as the terms of such indebtedness. If the Company were unable to refinance its indebtedness on acceptable terms, or at all, the Company might be forced to dispose of one or more of the Properties upon disadvantageous terms, which might result in losses to the Company and might adversely affect the cash available for distribution. If prevailing interest rates or other factors at the time of refinancing result in higher interest rates on refinancings, the Company's interest expense would increase, which would adversely affect the Company's cash flow and its ability to pay expected distributions to stockholders. Further, if a Property is mortgaged to secure payment of indebtedness and the Company is unable to meet mortgage payments, or is in default under the related mortgage or deed of trust, such Property could be transferred to the mortgagee, the mortgagee could foreclose upon the Property, appoint a receiver and receive an assignment of rents and leases or pursue other remedies, all with a consequent loss of income and asset value to the Company. Foreclosures could also create taxable income without accompanying cash proceeds, thereby hindering the Company's ability to meet the REIT distribution requirements of the Code. See "The Financing."

CHANGES IN INVESTMENT AND FINANCING POLICIES WITHOUT STOCKHOLDER VOTE. Subject to the Company's fundamental investment policy to maintain its qualification as a REIT (unless a change is approved by the Company's Board of Directors and stockholders), the Company's Board of Directors will determine its investment and financing policies, its growth strategy, and its debt, capitalization, distribution and operating policies. Although the Board of Directors has no present intention to revise or amend these strategies and policies, the Board of Directors may do so at any time without a vote of the Company's stockholders. See "Policies With Respect to Certain Activities-- Other Policies." Accordingly, stockholders will have no control over changes in strategies and policies of the Company, and such changes may not serve the interests of all stockholders and could adversely affect the Company's financial condition or results of operations, including its ability to distribute cash to stockholders.

Issuance of Additional Securities. The Company has authority to offer its Common Stock or other equity or debt securities in exchange for property or otherwise. Similarly, the Company may cause the Operating Partnership to offer additional Units or preferred units of the Operating Partnership, including offers in exchange for property to sellers who seek to defer certain of the tax consequences relating to a property transfer. Existing stockholders will have no preemptive right to acquire any such securities, and any such issuance of equity securities could result in dilution in an existing stockholder's investment in the Company.

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Risks Involved in Acquisitions Through Partnerships or Joint Ventures. The Company may invest in office and industrial properties through partnerships or joint ventures instead of purchasing such properties directly or through wholly-owned subsidiaries. Partnership or joint venture investments may, under certain circumstances, involve risks not otherwise present in a direct acquisition of properties. These include the risk that the Company's co- venturer or partner in an investment might become bankrupt; a co-venturer or partner might at any time have economic or business interests or goals which are inconsistent with the business interests or goals of the Company and a co- venturer or partner might be in a position to take action contrary to the instructions or the requests of the Company or contrary to the Company's policies or objectives.

Risks Involved in Investments in Securities Related to Real Estate. The Company may pursue its investment objectives through the ownership of securities of entities engaged in the ownership of real estate. Ownership of such securities may not entitle the Company to control the ownership, operation and management of the underlying real estate. In addition, the Company may have no ability to control the distributions with respect to such securities, which may adversely affect the Company's ability to make required distributions to stockholders. Furthermore, if the Company desires to control an issuer of securities, it may be prevented from doing so by the limitations on percentage ownership and gross income tests which must be satisfied by the Company in order for the Company to qualify as a REIT. See "Federal Income Tax Consequences--Taxation of the Company--Requirements for Qualification as a REIT." The Company intends to operate its business in a manner that will not require the Company to register under the Investment Company Act of 1940 and stockholders will therefore not have the protection of that Act.

The Company may also invest in mortgages, and may do so as a strategy for ultimately acquiring the underlying property. In general, investments in mortgages include the risk that borrowers may not be able to make debt service payments or pay principal when due, the risk that the value of the mortgaged property may be less than the principal amount of the mortgage note securing such property and the risk that interest rates payable on the mortgages may be lower than the Company's cost of funds to acquire these mortgages. In any of these events, Funds from Operations and the Company's ability to make required distributions to stockholders could be adversely affected.

RISK OF OPERATIONS CONDUCTED THROUGH THE OPERATING PARTNERSHIP. The Company will own and manage the Properties through its investment in the Operating Partnership in which it will own an approximately 80.8% economic interest (or an 82.9% interest if the Underwriters' over-allotment option is exercised in full). The remaining interests in the Operating Partnership will be owned by the Continuing Investors. Although the number of limited partnership Units was designed to result in a distribution per Unit equal to a distribution per share of Common Stock, such distributions would be equal only if the Company distributes to stockholders all amounts it receives in distributions from the Operating Partnership. See "Formation Transactions--Comparison of Common Stock and Units." In addition, under the terms of the Partnership Agreement, the limited partners of the Operating Partnership have certain approval rights with respect to certain transactions that affect all stockholders. See "-- Conflicts of Interest--Certain Limited Partner Approval Rights."

INFLUENCE OF CERTAIN CONTINUING INVESTORS. John B. Kilroy, Sr., the
Company's Chairman of the Board of Directors, and John B. Kilroy, Jr., the Company's President and Chief Executive Officer and one of its directors, will own, together with the other Continuing Investors, Units exchangeable for shares of Common Stock equal to approximately 19.2% of the total outstanding shares (and, together with options exercisable for shares of Common Stock, 20.7% of the total outstanding shares). In addition, the Messrs. Kilroy will hold two of the Company's five seats on the Board of Directors. Under the terms of the Company's charter, no other stockholder presently is permitted to own in excess of 7.0% of the Common Stock. In addition, although the Messrs. Kilroy will not be able to take action on behalf of the Company without the concurrence of other members of the Company's Board of Directors, they will, for so long as limited partners of the Operating Partnership own at least 5% of the outstanding Units, be able to block (i) the dissolution of the Operating Partnership, or (ii) prior to the seventh anniversary of the consummation of the Offering, the sale of the Office Property located at 2260 E. Imperial Highway at Kilroy Airport Center at El Segundo, in each case other than incident to a merger or sale of all or substantially all of the Company's assets, and be able to exert substantial influence over the Company's affairs.

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LIMITS ON OWNERSHIP AND CHANGE IN CONTROL. Certain provisions of the Maryland General Corporation Law (the "MGCL") and the Company's Articles of Incorporation and Bylaws, and certain provisions of the Operating Partnership's partnership agreement, could have the effect of delaying, deferring or preventing a change in control of the Company or the removal of existing management and, as a result, could prevent the stockholders of the Company from being paid a premium for their shares of Common Stock over then prevailing market prices.

Limits on Ownership of Common Stock. In order for the Company to maintain its qualification as a REIT, not more than 50% in value of the outstanding shares of its capital stock may be owned, actually or constructively, by five or fewer individuals (as defined in the Code to include certain entities) during the last half of a taxable year (other than the first year for which the election to be treated as a REIT has been made). Furthermore, after the first taxable year for which a REIT election is made, the Company's shares must be held by a minimum of 100 persons for at least 335 days of a 12-month taxable year (or a proportionate part of a short tax year). In addition, if the Company, or an owner of 10% or more of the Company, actually or constructively, owns 10% or more of a tenant of the Company (or a tenant of any partnership in which the Company is a partner), the rent received by the Company (either directly or through any such partnership) from such tenant will not be qualifying income for purposes of the REIT gross income tests of the Code. See "Federal Income Tax Consequences--Taxation of the Company." In order to protect the Company against the risk of losing REIT status due to a concentration of ownership among its stockholders, the Articles of Incorporation of the Company limit actual or constructive ownership of the outstanding shares of Common Stock by any single stockholder to 7.0% (the "Ownership Limit") of the then outstanding shares of Common Stock. See "Description of Capital Stock--Restrictions on Ownership and Transfer." The Board of Directors will consider waiving the Ownership Limit with respect to a particular stockholder if it is satisfied, based upon the advice of tax counsel or otherwise, that ownership by such stockholder in excess of the Ownership Limit would not jeopardize the Company's status as a REIT and the Board of Directors otherwise decided such action would be in the best interests of the Company. The Board of Directors has waived the Ownership Limit with respect to John B. Kilroy, Sr., John B. Kilroy, Jr., members of their families and certain affiliated entities and has permitted such individuals and entities to actually or constructively own, in the aggregate, up to 21% of the outstanding Common Stock.

Actual or constructive ownership of shares of Common Stock in excess of the Ownership Limit, or, with the consent of the Board of Directors, such other limit, will cause the violative transfer or ownership to be void with respect to the transferee or owner as to that number of shares in excess of the Ownership Limit, or, with the consent of the Board of Directors, such other limit, as applicable, and such shares will be automatically transferred to a trust for the benefit of a qualified charitable organization. Such purported transferee or owner shall have no right to vote such shares or be entitled to dividends or other distributions with respect to such shares. See "Description of Capital Stock--Restrictions on Ownership and Transfer" for additional information regarding the Ownership Limit.

Staggered Board. Following the consummation of the Offering, the Board of Directors of the Company will be divided into three classes serving staggered three-year terms. The terms of the first, second and third classes will expire in 1998, 1999 and 2000, respectively. Directors for each class will be chosen for a three-year term upon the expiration of the current class' term, beginning in 1998. In addition, the Articles of Incorporation authorize the Board of Directors to issue up to 150,000,000 shares of Common Stock and 30,000,000 shares of preferred stock and to establish the rights and preferences of any shares of preferred stock issued. No shares of preferred stock will be issued or outstanding at the consummation of the Offering. See "Description of Capital Stock--Preferred Stock." Under the Articles of Incorporation, stockholders do not have cumulative voting rights.

The Ownership Limit, the staggered terms for directors, the issuance of additional common or preferred stock in the future and the absence of cumulative voting rights could have the effect of (i) delaying or preventing a change of control of the Company even if a change of control were in the stockholders' interest, (ii) deterring tender offers for the Common Stock that may be beneficial to the stockholders, or (iii) limiting the opportunity for stockholders to receive a premium for their Common Stock that might otherwise exist if an investor attempted

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to assemble a block of shares of Common Stock in excess of the Ownership Limit or otherwise to effect a change of control of the Company. See "Management" and "Description of Capital Stock."

DEPENDENCE ON KEY PERSONNEL. The Company is dependent on the efforts of its executive officers and directors, particularly John B. Kilroy, Sr., the Company's Chairman of the Board, and John B. Kilroy, Jr., the Company's President and Chief Executive Officer, for strategic business direction and experience in the Southern California real estate market. While the Company believes that it could find replacements for these key personnel, the loss of their services could have an adverse effect on the operations of the Company. The Company has entered into employment agreements with John B. Kilroy, Jr., Jeffrey C. Hawken, Richard E. Moran Jr. and Campbell Hugh Greenup. See "Management--Employment Agreements."

DISTRIBUTION PAYOUT PERCENTAGE. The Company's expected annual distributions for the 12 months following consummation of the Offering of $1.55 per share are expected to be approximately 93.6% of estimated cash available for distribution. If cash available for distribution generated by the Company's assets for such 12-month period is less than the Company's estimate, or if such cash available for distribution decreases in future periods from expected levels, the Company's ability to make the expected distributions would be adversely affected. Any such failure to make expected distributions could result in a decrease in the market price of the Common Stock. See "Distribution Policy."

HISTORICAL OPERATING LOSSES OF THE OFFICE AND INDUSTRIAL

PROPERTIES. Although the Office and Industrial Properties developed by the Company after their construction and initial lease-up periods have historically generated positive net cash flow, the effect of depreciation, amortization and other non-cash charges of the Company has resulted in net losses for financial reporting purposes in each of the last five fiscal years. Historical operating results of the Office and Industrial Properties may not be comparable to future operating results of the Company because, prior to the completion of the Offering and the Formation Transactions, the Office and Industrial Properties were encumbered with greater levels of debt (which has the effect of reducing net income) than that with which the Company intends to operate. In addition, the historical results of operations do not reflect the acquisition and development of any of the Acquisition Properties or the Development Properties. See "Management's Discussion and Analysis of Financial Condition and Results of Operations." However, there can be no assurance that the Company will acquire the Acquisition Properties or acquire and successfully develop any of the Development Properties, and, even if such Properties are acquired and successfully developed, that they will not experience losses in the future.

NO LIMITATION ON DEBT. The Board of Directors currently intends to fund acquisition opportunities and development partially through short-term borrowings, as well as out of undistributed cash available for distribution and other available cash. The Board of Directors expects to refinance projects purchased or developed with short-term debt either with long-term indebtedness or equity financing depending upon the economic conditions at the time of refinancing. Upon completion of the Offering and the Formation Transactions, the debt to total market capitalization ratio of the Company will be approximately 25.5% (assuming an initial public offering price of $20.00 per share of Common Stock). The Board of Directors has adopted a policy of limiting its indebtedness to approximately 50% of its total market capitalization (i.e., the market value of the issued and outstanding shares of Common Stock, including interests exchangeable therefor, plus total debt), but the organizational documents of the Company do not contain any limitation on the amount or percentage of indebtedness, funded or otherwise, that the Company may incur. The Board of Directors, without the vote of the Company's stockholders, could alter or eliminate its current policy on borrowing at any time at its discretion. If this policy were changed, the Company could become more highly leveraged, resulting in an increase in debt service that could adversely affect the Company's cash flow and its ability to make expected distributions to its stockholders and an increased risk of default on the Company's obligations. See "Policies With Respect to Certain Activities-- Financing."

The Company has established its debt policy relative to the market capitalization of the Company rather than to the book value of its assets, a ratio that is frequently employed. The Company has used total market capitalization because it believes that the book value of its assets (which to a large extent is the depreciated value

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of real property, the Company's primary tangible asset) does not accurately reflect its ability to borrow and to meet debt service requirements. The total market capitalization of the Company, however, is more variable than book value, and does not necessarily reflect the fair market value of the underlying assets of the Company at all times. Although the Company will consider factors other than total market capitalization in making decisions regarding the incurrence of indebtedness (such as the purchase price of properties to be acquired with debt financing, the estimated market value of such properties upon refinancing and the ability of particular properties and the Company as a whole to generate cash flow to cover expected debt service), there can be no assurance that the ratio of indebtedness to total market capitalization (or to any other measure of asset value) will be consistent with the expected level of distributions to the Company's stockholders.

GOVERNMENT REGULATIONS. Many laws and governmental regulations are applicable to the Properties and changes in these laws and regulations, or their interpretation by agencies and the courts, occur frequently.

Costs of Compliance with Americans with Disabilities Act. Under the Americans with Disabilities Act of 1990 (the "ADA"), all places of public accommodation, effective beginning in 1992, are required to meet certain federal requirements related to access and use by disabled persons. Compliance with the ADA might require removal of structural barriers to handicapped access in certain public areas where such removal is "readily achievable." Noncompliance with the ADA could result in the imposition of fines or an award of damages to private litigants. The impact of application of the ADA to the Company's properties, including the extent and timing of required renovations, is uncertain. If required changes involve a greater amount of expenditures than the Company currently anticipates or if the changes must be made on a more accelerated schedule than the Company currently anticipates, the Company's ability to make expected distributions to stockholders could be adversely affected.

Environmental Matters. Under various federal, state and local laws, ordinances and regulations relating to the protection of the environment, an owner or operator of real estate may be held liable for the costs of removal or remediation of certain hazardous or toxic substances located on or in the property. These laws often impose liability without regard to whether the owner was responsible for, or even knew of, the presence of such hazardous or toxic substances. The costs of investigation, removal or remediation of such substances may be substantial, and the presence of such substances may adversely affect the owner's ability to rent or sell the property or to borrow using such property as collateral and may expose it to liability resulting from any release of or exposure to such substances. Persons who arrange for the disposal or treatment of hazardous or toxic substances at another location may also be liable for the costs of removal or remediation of such substances at the disposal or treatment facility, whether or not such facility is owned or operated by such person. Certain environmental laws impose liability for release of asbestos-containing materials into the air, and third parties may also seek recovery from owners or operators of real properties for personal injury associated with asbestos-containing materials and other hazardous or toxic substances. In connection with the ownership (direct or indirect), operation, management and development of real properties, the Company may be considered an owner or operator of such properties or as having arranged for the disposal or treatment of hazardous or toxic substances and, therefore, potentially liable for removal or remediation costs, as well as certain other related costs, including governmental penalties and injuries to persons and property.

The Company believes that the Properties are in compliance in all material respects with all federal, state and local laws, ordinances and regulations regarding hazardous or toxic substances or petroleum products. The Company has not been notified by any governmental authority, and is not otherwise aware, of any material noncompliance, liability or claim relating to hazardous or toxic substances or petroleum products in connection with any of its present properties.

All of the Properties were subject to Phase I or similar environmental assessments by independent environmental consultants in connection with the formation of the Company. Phase I assessments are intended to discover information regarding, and to evaluate the environmental condition of, the surveyed property and surrounding properties. Phase I assessments generally include an historical review, a public records review, an investigation of the surveyed site and surrounding properties, and preparation and issuance of a written report,

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but do not include soil sampling or subsurface investigations. In connection with the preparation of the Phase I environmental survey with respect to Kilroy Long Beach Phase I, interviews of certain individuals formerly employed at the site documented in a historical site assessment survey revealed the site's possible prior use as a Nike air defense command center or missile facility. Further investigation performed by the Company's environmental consultants and by the Company did not reveal any additional information with respect to such use of the site. The Company's investigation included whether the site might have been used previously for the storage of missiles containing nuclear warheads, and did not reveal any facts that would indicate that the prior use of the site would result in a material risk of environmental liability. Consequently, the Company does not believe that this site constitutes a risk of a liability that would have a material adverse effect on the Company's financial condition or results of operations taken as a whole. In connection with the preparation of the Phase I environmental survey with respect to the Industrial Property located at 12752-12822 Monarch Street, soil sampling revealed trace elements of contamination with cleaning solvents. However, based on the level of contamination noted in the environmental survey, management does not believe that such contamination will have a material adverse effect on the Company's financial condition or results of operations taken as a whole.

None of the Company's environmental assessments of the other Properties has revealed any environmental liability that the Company believes would have a material adverse effect on the Company's financial condition or results of operations taken as a whole, nor is the Company aware of any such material environmental liability. Nonetheless, it is possible that the Company's assessments do not reveal all environmental liabilities or that there are material environmental liabilities of which the Company is unaware. Moreover, there can be no assurance that (i) future laws, ordinances or regulations will not impose any material environmental liability or (ii) the current environmental condition of the Properties will not be affected by tenants, by the condition of land or operations in the vicinity of the Properties (such as the presence of underground storage tanks), or by third parties unrelated to the Company. If compliance with the various laws and regulations, now existing or hereafter adopted, exceeds the Company's budgets for such items, the Company's ability to make expected distributions to stockholders could be adversely affected.

Other Regulations. The Properties are also subject to various federal, state and local regulatory requirements such as state and local fire and life safety requirements. Failure to comply with these requirements could result in the imposition of fines by governmental authorities or awards of damages to private litigants. The Company believes that the Properties are currently in compliance with all such regulatory requirements. However, there can be no assurance that these requirements will not be changed or that new requirements will not be imposed which would require significant unanticipated expenditures by the Company and could have an adverse effect on the Company's Funds from Operations and expected distributions.

The City of Los Angeles has enacted certain regulations relating to the repair of welded steel moment frame buildings located in certain areas damaged as a result of the Southern California Northridge earthquake on January 17, 1994. Such regulations do not apply to the Properties. There can be no assurance, however, that similar regulations will not be adopted by governmental agencies with the ability to regulate the Properties or that other requirements affecting the Properties will not be imposed which would require significant unanticipated expenditures by the Company and could have an adverse effect on the Company's Funds from Operations and cash available for distribution. The Company believes, based in part on recent engineering reports, that its Properties are in good condition. See "Business and Properties--Uninsured Losses from Seismic Activity."

IMMEDIATE AND SUBSTANTIAL DILUTION. As set forth more fully under "Dilution," as of September 30, 1996, the Properties to be contributed by the Kilroy Group in exchange for Units in the Operating Partnership had a pro forma net tangible book value for financial reporting purposes (giving effect to the Offering) of approximately $81.3 million, or $7.16 per share of Common Stock. As a result, the pro forma net book value per share of Common Stock of the Company after the consummation of the Offering and the Formation Transactions will be less than the assumed initial public offering price of $20.00 per share. The purchasers of Common Stock offered hereby will experience immediate and substantial dilution of $12.84 per share of Common Stock (based on the assumed initial public offering price) in the net tangible book value of the shares of Common Stock. See "Dilution."

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NO PRIOR PUBLIC MARKET. Prior to the Offering, there has been no public market for the Common Stock, and there can be no assurance that an active trading market will develop as a result of the Offering or, if a trading market does develop, that it will be sustained or that the shares of Common Stock will be resold at or above the initial public offering price. The market for equity securities can be volatile and the trading price of the Common Stock could be subject to wide fluctuations in response to operating results, news announcements, trading volume, general market trends, changes in interest rates, governmental regulatory action and changes in tax laws. The initial public offering price of the Common Stock offered hereby will be determined through negotiations between the Company and the representatives (the "Representatives") of the Underwriters. Among the factors to be considered in such negotiations, in addition to prevailing market conditions, will be distribution rates and Funds from Operations of publicly traded REITs that the Company and the Representatives believe to be comparable to the Company, estimates of the business potential and earnings prospects of the Company, and the current state of the Company's industry and the economy as a whole. The assumed initial public offering price does not necessarily bear any relationship to the Company's book value, assets, financial condition or any other established criteria of value and may not be indicative of the market price for the Common Stock after the Offering. See "Underwriting."

EFFECT OF MARKET INTEREST RATES ON PRICE OF COMMON STOCK. One of the factors that will influence the market price of the Common Stock in public markets will be the annual yield on the price paid for shares from distributions by the Company. An increase in prevailing market interest rates on fixed income securities may lead prospective purchasers of the Common Stock to demand a higher annual yield from future distributions. Such an increase in the required yield from distributions may adversely affect the market price of the Common Stock.

SHARES AVAILABLE FOR FUTURE SALE. No prediction can be made as to the effect, if any, that future sales of shares, or the availability of shares for future sale, will have on the market price of the Common Stock. Sales of substantial amounts of shares of Common Stock in the public market (or upon exchange of Units) or the perception that such sales might occur could adversely affect the market price of the shares of Common Stock.

Upon the consummation of the Offering and the Formation Transactions, the Company will have 11,360,000 shares of Common Stock outstanding (including 60,000 restricted shares of Common Stock issued to an officer of the Company who is not a Continuing Investor and excluding 1,695,000 shares of Common Stock subject to the Underwriters' over-allotment option), of which all but the 60,000 restricted shares of Common Stock will be freely tradeable in the public market by persons other than "affiliates" of the Company without restriction or registration under the Securities Act. The Common Stock issued to an officer and all of the shares of Common Stock that are issuable upon the redemption of Units will be deemed to be "restricted securities" within the meaning of Rule 144 under the Securities Act and may not be transferred unless registered under the Securities Act or an exemption from registration is available, including any exemption from registration provided under Rule 144 of the Securities Act. In general, upon satisfaction of certain conditions, Rule 144 of the Securities Act permits the sale of certain amounts of restricted securities two years following the date of acquisition of the restricted securities from the Company and, after three years, permits unlimited sales by persons unaffiliated with the Company.

It is expected that the Operating Partnership will issue an aggregate of 2,692,374 Units to executive officers, directors and other Continuing Investors in connection with the formation of the Company which, after two years following the receipt of such Units, may be redeemed by the Operating Partnership at the request of the holders for cash (based on the fair market value of an equivalent number of shares of Common Stock at the time of such redemption) or, at the Company's option, exchanged for an equal number of shares of Common Stock, subject to certain antidilution adjustments and, with respect to 50% of the Units to be issued to John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries, the obligation of such Continuing Investors to indemnify the Company in connection with the Formation Transactions. See "Formation and Structure of the Company--Allocation of Consideration in the Formation Transactions." However, if the Company does not elect to exchange such Units for shares, a Continuing Investor that is a corporation or a limited liability company may require the Company to issue shares of Common Stock in lieu of cash, subject to the Ownership Limit or, with the consent of the

34

Board of Directors, such other limit which does not result in the failure of the Company to qualify as a REIT. See "Formation and Structure of the Company" and "Shares Available for Future Sale--Redemption Rights/Exchange Rights/Registration Rights." It is expected that immediately after the Offering the Company will grant options to purchase an aggregate of approximately 900,000 shares of Common Stock at the initial public offering price to certain directors, executive officers and other employees of the Company and an additional approximately 500,000 shares of Common Stock will be reserved for issuance as restricted shares of Common Stock or upon the exercise of options granted under the Stock Incentive Plan. See "Management-- Stock Incentive Plan." In addition, the Company may issue from time to time additional shares of Common Stock or Units in connection with the acquisition of properties, including the possible issuance of Units upon the exercise of options to acquire the Excluded Properties. See "The Company--Growth Strategies" and "Business and Properties--Development, Management and Leasing Activities--Excluded Properties." The Company has agreed to file and generally keep continuously effective beginning two years after the completion of the Offering a registration statement covering the issuance of shares upon the exchange of Units and the resale thereof and has agreed to provide piggyback registration rights with respect to shares of Common Stock which may be acquired by the Continuing Investors and certain other persons. See "Shares Available for Future Sale." The Company also anticipates that it will file a registration statement with respect to the shares of Common Stock issuable under the Stock Incentive Plan following the consummation of the Offering. Such registration statements and registration rights generally will allow shares of Common Stock covered thereby, including shares of Common Stock issuable upon exchange of Units or the exercise of options or restricted shares of Common Stock to be transferred or resold without restriction under the Securities Act.

In addition to the limits placed on the sale of shares of Common Stock by operation of Rule 144 and other provisions of the Securities Act, (i) each of the Continuing Investors has agreed not to, directly or indirectly, offer, sell, offer to sell, contract to sell, pledge, grant any option to purchase or otherwise sell or dispose (or announce any offer, sale, offer of sale, contract of sale, pledge, grant of any option to purchase or other sale or disposition) of any Units or shares of Common Stock or other capital stock of the Company, or any securities convertible or exercisable or exchangeable for any Units or shares of Common Stock or other capital stock of the Company for a period of two years from the date of this Prospectus, and (ii) the Company has agreed not to offer, sell, offer to sell, contract to sell, pledge, grant any option to purchase or otherwise sell or dispose (or announce any offer, sale, offer of sale, contract of sale, pledge, grant of any option to purchase or other sale or disposition) of any (other than pursuant to the Stock Incentive Plan) shares of Common Stock or other capital stock of the Company, or any securities convertible or exercisable or exchangeable for any Units or shares of Common Stock or other capital stock of the Company, for a period of 180 days from the date of this Prospectus, in each case without the prior written consent of Prudential Securities Incorporated, on behalf of the Underwriters, subject to certain limited exceptions. At the conclusion of the two-year period referenced in clause (i) above, Common Stock issued upon the subsequent exchange of Units may be sold in the public market pursuant to the registration rights described above. Notwithstanding the foregoing, 50% of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries in connection with the Formation Transactions will be pledged to secure their indemnification obligations pursuant to an agreement with the Company. See "Formation and Structure of the Company." Future sales of the shares of Common Stock described above could have an adverse effect on the market price of the shares of Common Stock and the existence of Units, options, shares of Common Stock reserved for issuance as restricted shares of Common Stock or upon exchange of Units and the exercise of options and registration rights referred to above may adversely affect the terms upon which the Company may be able to obtain additional capital through the sale of equity securities. See "Shares Available for Future Sale" and "Underwriting." Such sales may be increased or accelerated to the extent that the Continuing Investors have personal obligations, including obligations for taxes, which may arise as a result of the Formation Transactions or prior transactions.

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FORMATION AND STRUCTURE OF THE COMPANY

Kilroy Realty was formed in September 1996 and the Operating Partnership was formed in October 1996. The Services Company will be formed prior to consummation of the Offering.

FORMATION TRANSACTIONS

Prior to or simultaneous with the consummation of the Offering, the Company, the Operating Partnership, the Services Company and the Continuing Investors will engage in the Formation Transactions designed to enable the Company to continue and expand the real estate operations of KI, to facilitate the Offering, to enable the Company to qualify as a REIT for federal income tax purposes commencing with its taxable year ending December 31, 1997 and to preserve certain tax advantages for the existing owners of the Properties. The Formation Transactions are as follows:

. Pursuant to the Omnibus Agreement, the Operating Partnership may require the contribution to the Operating Partnership of all of the Continuing Investors' interests in the Properties (other than the Acquisition Properties), the assets used to conduct the leasing, management and development activities (principally office equipment), the assignment of contract rights in connection with development opportunities at Kilroy Airport Center Long Beach, and the rights with respect to the purchase of each of the Acquisition Properties, in exchange for Units representing limited partnership interests in the Operating Partnership. The book value to the Continuing Investors of the assets to be contributed to the Operating Partnership is a negative $113.2 million and the value of the Units representing limited partnership interests in the Operating Partnership to be received by the Continuing Investors is $53.8 million, assuming a Unit value equal to the assumed initial public offering price of $20.00 per share. Pursuant to the terms of the Omnibus Agreement, the Operating Partnership has the right to acquire the Properties and the other assets described above from the Continuing Investors in exchange for Units through December 31, 1998, the date the Omnibus Agreement terminates. Following the consummation of the Offering and the Formation Transactions, the Units received by the Continuing Investors will constitute in the aggregate an approximately 19.2% limited partnership interest in the Operating Partnership.

. John B. Kilroy, Sr. and John B. Kilroy, Jr. will acquire all of the voting common stock of the Services Company for the aggregate purchase price of $5,275 in cash (representing 5.0% of its economic value), and the Operating Partnership will acquire all of the non-voting preferred stock of the Services Company (representing 95.0% of its economic value).

. The Company will sell shares of Common Stock in the Offering, issue restricted shares of Common Stock to Richard E. Moran Jr., Executive Vice President, Chief Financial Officer and Secretary of the Company (but not a Continuing Investor) and contribute the net proceeds from the Offering and the issuance of such restricted stock (approximately $206.6 million in the aggregate) to the Operating Partnership in exchange for an 80.8% general partner interest in the Operating Partnership.

. The Company, through the Operating Partnership, will borrow approximately $84.0 million principal amount of long-term financing and $12.0 million principal amount of short-term debt pursuant to the Mortgage Loans.

. The Operating Partnership will apply the aggregate of the net Offering proceeds and the Mortgage Loans toward the repayment of existing mortgage indebtedness on certain of the Properties, the purchase of the Acquisition Properties and payment of its expenses arising in connection with the Offering and the Financing. See "Use of Proceeds."

. Forty-seven of the current 69 employees of KI will become employees of the Company, the Operating Partnership and/or the Services Company, including John B. Kilroy, Jr., the President and Chief Executive Officer of KI, three other executive officers (Mr. Jeffrey Hawken, Executive Vice President and Chief Operating Officer, Mr. Richard E. Moran Jr., Executive Vice President, Chief Financial

36

Officer and Secretary, and Mr. Campbell Hugh Greenup, General Counsel) who are not Continuing Investors and 43 other operating and administrative employees. See "Management."

. The Operating Partnership or the Services Company will enter into Management Agreements with respect to each of the Excluded Properties. Pursuant to the terms of each of the Management Agreements, the Operating Partnership or the Services Company, as applicable, will have exclusive control and authority (subject to an operating budget to be approved by the owners of each property) over each of the Excluded Properties for a term of 24 months. If any of the Excluded Properties are sold during the term of the Management Agreements, then either party may terminate the respective Management Agreement with respect to the property being sold upon 30 days' prior written notice. In consideration of the services to be provided under the Management Agreements, the Company will receive a monthly property management fee as well as any applicable leasing commissions. See "Business and Properties--Excluded Properties."

. Concurrent with the consummation of the Offering, the Company will enter into Option Agreements with partnerships controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr. granting to the Operating Partnership the exclusive right to acquire (i) the approximately 18 undeveloped acres located at Calabasas Park Centre for cash and (ii) the office property located at North Sepulveda Boulevard, El Segundo for cash (or for Units after the first anniversary of the Offering at the election of the seller), and in each case pursuant to the other terms of the respective Option Agreement. See "Business and Properties--Excluded Properties-- Calabasas Park Centre" and "--North Sepulveda Boulevard, El Segundo" for a discussion of the purchase price and other material terms of each Option Agreement.

As a result of the foregoing transactions, the Company will own 11,360,000 Units of the Operating Partnership (including 60,000 Units attributable to the issuance by the Company of 60,000 restricted shares of Common Stock to Mr. Moran), which will represent an approximately 80.8% economic interest in the Operating Partnership, and the Continuing Investors will own 2,692,374 Units, which will represent the remaining approximately 19.2% economic interest in the Operating Partnership. If the Underwriters' over-allotment option is exercised in full and the net proceeds from the additional shares of Common Stock sold by the Company are contributed to the Operating Partnership, the Company's percentage ownership interest in the Operating Partnership will increase to approximately 82.9%. The Company will be the sole general partner and retain management control over the Operating Partnership.

Holders of Units will have the opportunity after two years following the receipt of such Units to have their Units redeemed by the Operating Partnership at the request of the Unitholder for cash (based on the fair market value of an equivalent number of shares of Common Stock at the time of such redemption) or, at the Company's option, it may exchange Units for shares of Common Stock on a one-for-one basis, subject to certain antidilution adjustments and the obligation of certain of the Continuing Investors to indemnify the Company in connection with the Formation Transactions, provided, however, that if the Company does not elect to exchange such Units for shares of Common Stock, a Unitholder that is a corporation or limited liability company may require the Company to issue shares of Common Stock in lieu of cash, subject to the Ownership Limit or such other limit as provided in the Company's Articles of Incorporation, as applicable. See "Formation and Structure of the Company--Allocation of Consideration in the Formation Transactions," Under certain circumstances, 50% of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries may be redeemed prior to the second anniversary of the consummation of the Offering in connection with the obligation of such Continuing Investors to indemnify the Company in connection with the Formation Transactions. See "--Allocation of Consideration in the Formation Transactions."

The Continuing Investors are comprised of (i) seven individuals, John B. Kilroy, Sr., his five children, John B. Kilroy, Jr., Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso, and Marshall L. McDaniel, a long-time employee of KI, all of whom are "accredited investors" as defined in Regulation D, and (ii) corporations, partnerships and trusts owned, directly or indirectly, solely by such individuals, all of which are also "accredited investors." See "Note 1. Organization and Basis of Presentation" to the historical financial statements of the Kilroy Group. In addition, John B. Kilroy, Sr. is the Company's Chairman of the Board of

37

Directors and John B. Kilroy, Jr. is President and Chief Executive Officer and a director of the Company. Consent of the Continuing Investors to the Formation Transactions was received on or before November 3, 1996 pursuant to a private solicitation thereof in compliance with Regulation D.

REASONS FOR THE REORGANIZATION OF THE COMPANY

The Company believes that the benefits of the Formation Transactions outweigh the detriments to the Company. The benefits of the Company's REIT status and structure, as opposed to the status and structure of the Partnerships, include the following:

. Access to Capital. The Company's structure will, in the Company's judgment, provide it with greater access to capital for refinancing and growth. Sources of capital include the Common Stock sold in the Offering and possible future issuances of debt or equity through public offerings or private placements. The financial strength of the Company should enable it to obtain financing at better rates and on better terms than would otherwise be available to the Partnerships, some of which are single asset entities.

. Growth of the Company. The Company's structure will allow stockholders, including the Continuing Investors through their ownership of Units, an opportunity to participate in the growth of the real estate market through an ongoing business enterprise. In addition to the existing portfolio of Properties, the Company gives stockholders an interest in all future development by the Company and in the fee-producing service businesses being contributed by the Company to the Services Company.

. Risk Diversification. The Company's structure provides stockholders a diversification of risk and reward not available in single asset entities by providing them with an equity interest in a REIT in which there has been a pooling together of similar properties and by consolidating the operating business and future development projects.

. Deleveraging. Upon completion of the Offering and the Formation Transactions, the Company will have substantially reduced the debt encumbering the Properties. This reduction, with a consequent reduction in debt service, will increase the aggregate amount of cash available for distribution to stockholders. The Formation Transactions also will permit the Company to refinance its existing indebtedness at more favorable rates.

. Liquidity. The equity interests in the Partnerships are typically not marketable. The Company's structure allows stockholders, including the Continuing Investors, the opportunity to liquidate their capital investment through the disposition of Common Stock or Units. Beginning on the second anniversary of the consummation of the Offering, holders of Units will have the opportunity to have their Units redeemed by the Operating Partnership for cash equal to the value of an equal number of shares of Common Stock, or the Company may elect to exchange such Units for an equivalent number of shares of Common Stock, provided, however, if the Company does not elect to exchange such units for shares of Common Stock, a holder of Units that is a corporation or limited liability company may require the Company to issue Common Stock in lieu thereof, subject to the Ownership Limit or such other limit as provided in the Company's Articles of Incorporation, as applicable.

. Public Market Valuation of Real Estate Assets. The Company's structure may allow investors to benefit potentially from the current public market valuation of REITs, which management believes is favorable in light of the current private market valuation of comparable assets.

. Tax Deferral. The Formation Transactions provide to the Continuing Investors the opportunity to defer the tax consequences that would arise from a sale or contribution of their interests in the Properties and other assets to the Company or to a third party.

The detriments of the Company's REIT status and structure as opposed to the status and structure of the Partnerships include the following (see also "Risk Factors"):

. Conflicts of Interest. Management of the Company will be subject to a number of conflicts of interest in the operation of the Operating Partnership as well as the formation of the Company. Among other

38

conflicts, there will be no independent valuation or appraisal of the Properties, and no arm's-length negotiation of the terms of the option agreements relating to the Excluded Properties, and there can be no assurance that the value given to the Continuing Investors by the Company for such assets is equal to their fair market value. Because John B. Kilroy, Sr. and John B. Kilroy, Jr. will be directors or officers of the Company, they will have a conflict of interest with respect to enforcing the agreements transferring their interest in certain assets to the Company. In addition, because the Continuing Investors and officers of the Company may suffer different tax consequences than the Company upon the sale or refinancing of any of the Properties, their interests regarding the timing and pricing of such sale or refinancing may conflict with those of the Company. So long as the Continuing Investors own more than 5% of the outstanding Units, the Continuing Investors will be able to veto or preclude the sale of the Office Property located at 2260 E. Imperial Highway at Kilroy Airport Center at El Segundo at any time prior to the seventh anniversary of the Offering. In addition, the Company is required to use its commercially reasonable efforts to structure any merger, consolidation or other business combination, any sale or other disposition of all or substantially all of its assets, or any reclassification, recapitalization or change of its outstanding equity interests, to avoid causing the limited partners to recognize gain for federal income tax purposes by virtue of the occurrence of or their participation in such transaction. The Operating Partnership will also use commercially reasonable efforts to cooperate with the limited partners to minimize any taxes payable in connection with any repayment, refinancing, replacement or restructuring of indebtedness, or any sale, exchange or any other disposition of assets, of the Operating Partnership. See "Partnership Agreement of the Operating Partnership--Certain Limited Partner Approval Rights."

. Consent Rights of Limited Partners. The Company will be the sole general partner of the Operating Partnership and will own and control 80.8% of the ownership interests in the Operating Partnership. However, under the terms of the Partnership Agreement, the Company may not withdraw as general partner of the Operating Partnership or transfer or assign its interest in the Operating Partnership without the consent of partners holding in the aggregate at least 60% of all interests in the Operating Partnership. See "Partnership Agreement of the Operating Partnership-- Transferability of Interests". In addition, until the seventh anniversary of the Offering the general partner of the Operating Partnership will not be able to dissolve the Operating Partnership, or sell the Office Property located at 2260 E. Imperial Highway at Kilroy Airport Center at El Segundo, without the consent of limited partners holding in the aggregate more than 50% of all Units representing limited partnership interests in the Operating Partnership, provided that the limited partners own at least 5% of the outstanding Units (including Units owned by the Company). See "Partnership Agreement of the Operating Partnership--Certain Limited Partner Approval Rights". As a consequence of the exercise of these consent and approval rights, the Company may be precluded from taking action that the Board of Directors believes is in the best interest of all stockholders. See "Partnership Agreement of the Operating Partnership--Transferability of Interests" and "--Certain Limited Partner Approval Rights."

. Influence of Certain Continuing Investors. John B. Kilroy, Sr., the Company's Chairman of the Board of Directors, and John B. Kilroy, Jr., the Company's President and Chief Executive Officer and one of its directors, will own, together with the other Continuing Investors, Units exchangeable for shares of the Common Stock equal to approximately 19.2% of the total outstanding shares. In addition, the Messrs. Kilroy will hold two of the Company's five seats on the Board of Directors. Under the terms of the Company's charter, no other stockholder presently is permitted to own in excess of 7.0% of the Common Stock. Consequently, although the Messrs. Kilroy will not be able to take action on behalf of the Company without the concurrence of other members of the Company's Board of Directors, they will be able to block certain transactions by the Operating Partnership and exert substantial influence over the Company's affairs.

. Loss of Individual Asset Growth Opportunity. Any given asset may over time outperform the Common Stock. Any investor who exchanges an interest in a single asset for a smaller interest in a

39

group of assets will receive a lower return on investment if the asset from which the investor traded outperforms the Common Stock.

. No Anticipated Distributions from Asset Sales. Unlike the Partnerships, in which the net proceeds from the sale of assets were generally distributed to the partners, the Company is not expected to have significant asset sales. Moreover, the Company may decide to reinvest the proceeds from asset sales rather than distribute them to stockholders. Although stockholders will have the ability to sell their shares of Common Stock (subject to certain restrictions discussed herein), they would not be able to rely upon the mere passage of time to realize their share of the gains, if any, that might be recognized at any point in time from a liquidation of all or part of the assets of the Company.

. Public Market Valuation. Although the public market may value real estate assets on a basis that is attractive in relation to private market real estate values, there is no assurance that this condition, if it exists, will continue. In the 1980s, REIT shares generally traded at a discount to the underlying private market values of the REIT properties, rather than at a premium. This condition could return. In addition, an increase in interest rates could adversely affect the market value of the shares of Common Stock.

. Costs of the Transaction. The aggregate expenses of the Offering, including the underwriting discount, are expected to be approximately $19.4 million, assuming gross proceeds of the Offering of approximately $226.0 million. In addition, the Operating Partnership will incur costs of approximately $1.8 million in the aggregate in connection with the Financing.

. Costs of Operating Public Company. The Company expects to incur expenses in connection with the requirements of being a public company, including without limitation, preparation of financial statements and proxies, printing and filing costs, directors' and officers' insurance, and legal and accounting fees, estimated to be $1.0 million annually.

COMPARISON OF COMMON STOCK AND UNITS

Conducting the Company's operations through the Operating Partnership allows the Continuing Investors to defer certain tax consequences by contributing their interests in Properties to the Operating Partnership and also offers favorable methods of accessing capital markets. Units in the Operating Partnership will be held by the Continuing Investors and the Company. Each Unit was designed to result in a distribution per Unit equal to a distribution per share of Common Stock (assuming the Company distributes to its stockholders all amounts it receives as distributions from the Operating Partnership). Beginning two years following the consummation of the Offering, each Unit issued in the Formation Transactions is redeemable by the Operating Partnership at the request of the Unitholder for cash payable by the Operating Partnership or, at the Company's option, the Company may exchange Units for Common Stock on a one-for-one basis (subject to certain antidilution adjustments and certain limitations on exchange to preserve the Company's status as a REIT), provided, however, that if the Operating Partnership elects to redeem such Units for cash, a Unitholder that is a corporation or a limited liability company may require the Company to issue shares of Common Stock in lieu of cash. There are, however, certain differences between the ownership of Common Stock and Units, including:

. Voting Rights. Holders of Common Stock may elect the Board of Directors of the Company, which, as the general partner of the Operating Partnership, controls the business of the Operating Partnership. Unitholders may not elect directors of the Company.

. Transferability. The shares of Common Stock sold in the Offering will be freely transferable under the Securities Act by holders who are not affiliates of the Company or the Underwriters. The Units and the shares of Common Stock into which they are exchangeable are subject to transfer restrictions under applicable securities laws and under the Partnership Agreement, including the required consent of the general partner to the admission of any new limited partner, and 50% of the Units of John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries will be pledged to secure certain indemnity obligations. See "Shares Available for Future Sale" for a description of the Registration Rights Agreement applicable to holders of Units.

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. Distributions. Because the relative tax basis of the contributions by the public investors and the Continuing Investors are expected to be different, it is possible that the public investors' distribution will include a return of capital that exceeds that of the Continuing Investors. See "Federal Income Tax Consequences."

ADVANTAGES AND DISADVANTAGES OF THE FORMATION TRANSACTIONS TO UNAFFILIATED STOCKHOLDERS

The potential advantages of the Formation Transactions to unaffiliated stockholders of the Company include their ability to participate in the cash flow of the Properties through their ownership in the Company and in all future office and industrial property acquisitions and development by the Company. The potential disadvantages of such transactions to unaffiliated stockholders of the Company may be several, including the impact of shares available for future sale and substantial and immediate dilution in the tangible book value per share, and the lack of arm's-length negotiations to determine the terms of the transfers of the Properties to the Company and the Operating Partnership and the terms of the option agreements relating to the Excluded Properties. See the discussion of such matters under "Risk Factors."

BENEFITS OF THE FORMATION TRANSACTIONS TO THE CONTINUING INVESTORS

The principals of KI proposed the Formation Transactions to the Continuing Investors because they believe that the benefits of the organization of the Company for the Continuing Investors outweigh the detriments to them. Benefits to the Continuing Investors include:

. improved liquidity of their interests in the Properties and increased diversification of their investment;

. repayment of indebtedness in the aggregate net amount of approximately $229.5 million resulting from the refinancing of existing mortgage indebtedness, of which approximately $37.2 million is guaranteed by John B. Kilroy, Sr., including $8.7 million which also is guaranteed by John B. Kilroy, Jr., and the repayment of approximately $3.4 million of personal indebtedness of John B. Kilroy, Sr.;

. an employment agreement between the Company and John B. Kilroy, Jr. providing annual salary, incentive compensation (including Common Stock options) and other benefits for his services as an officer of the Company (see "Management--Employment Agreements"), and a grant of options to purchase Common Stock to John B. Kilroy, Sr. (see "Management--Stock Incentive Plan"); and

. the deferral of certain tax consequences of taxable dispositions of assets through the creation of the Operating Partnership and the direct contribution of their interests in the Properties to the Operating Partnership in exchange for Units.

Set forth below are the (i) names of executive officers of the Company and certain other persons involved in the Formation Transactions; (ii) net book value of the interests of such persons in the Properties being transferred;
(iii) value of the Units, (iv) the number of shares of Common Stock, (v) cash,
(vi) the number of stock options, (vii) consideration for the Excluded Properties and (viii) repayment of debt and/or termination of guarantees that were outstanding as of December 31, 1996, to be received by the named persons in the Formation Transactions:

                          NET BOOK                                                                 DEBT
                          VALUE OF                                                              REPAYMENT/
                          PROPERTY   ANNUAL            NO. OF SHARES      NO. OF  CONSIDERATION  GUARANTEE
                          INTERESTS  SALARY              OF COMMON   CASH  STOCK  FOR EXCLUDED  TERMINATION
                              $        $    UNITS $        STOCK      $   OPTIONS  PROPERTIES        $
                          ---------  ------ -------    ------------- ---- ------- ------------- -----------
                                                         (IN THOUSANDS)
John B. Kilroy, Sr. ....  $ (76,233)   --   $25,262(1)       --       --     15         --(2)     $40,636(3)
John B. Kilroy, Jr. ....    (33,231)  $200   25,262(1)       --       --    250         --(2)       8,700(4)
KI(5)...................     --        --     --             --       --    --          --          --
Persons other than
 officers/directors(6)..     (3,759)   --     3,324          --       --    --          --(2)       --
                          ---------   ----  -------         ---      ---    ---        ---        -------
                          $(113,223)  $200  $53,848          --       --    265         --(2)     $49,336
                          =========   ====  =======         ===      ===    ===        ===        =======

(footnotes on next page)

41


(1) Includes the Units to be beneficially owned by KI which are allocated to John B. Kilroy, Sr. and John B. Kilroy, Jr., the only shareholders of KI, in accordance with their respective percentage ownership of KI. The value of the Units received by the Continuing Investors in connection with the Formation Transactions was determined assuming a Unit value equal to the assumed per share initial offering price of $20.00.
(2) In the event the Company exercises its option with respect to any of the Excluded Properties, each of John B. Kilroy, Sr. and John B. Kilroy, Jr. will receive approximately 49.0% and 51.0%, respectively, of the purchase price for the sale of the parcels at Calabasas Park Centre and approximately 65.1% and 18.2%, respectively, of the purchase price for the sale of the properties located at North Sepulveda Boulevard in El Segundo. In addition, each of Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso, the daughters of John B. Kilroy, Sr., will receive approximately 4.2% of the purchase price for the sale of the properties located at North Sepulveda Boulevard in El Segundo. The exercise price for the options for the Excluded Properties will vary depending on the date of exercise. See "Business and Properties--Excluded Properties."
(3) Represents $3.4 million of personal indebtedness repaid with proceeds of indebtedness incurred by the Company within the past 12 months, which indebtedness will be repaid with proceeds of the Offering, and $37.2 million of personal guarantees of indebtedness of the Kilroy Group secured by the Properties, which indebtedness will be repaid with proceeds of the Offering. See "Use of Proceeds."
(4) Represents the termination of personal guarantees of indebtedness of the Kilroy Group secured by the Properties, which indebtedness will be repaid with proceeds of the Offering. See "Use of Proceeds."
(5) The amounts attributable to KI are reflected in the amounts attributable to each of John B. Kilroy, Sr. and John B. Kilroy, Jr., the only shareholders of KI, who own 81.3% and 18.7% of the common stock of KI, respectively.
(6) The persons other than officers/directors of the Company are Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso, the daughters of John B. Kilroy, Sr., and Marshall McDaniel, a long-time employee of KI, all of whom are Continuing Investors.

The following table contains information concerning the grant of stock options under the Company's 1997 Stock Incentive Plan expected to be made for the year ended December 31, 1997 to John B. Kilroy, Sr. and John B. Kilroy, Jr. The table also lists potential realizable values of such options on the basis of assumed annual compounded stock appreciation rates of 5% and 10% over the life of the options.

OPTION GRANTS IN CONNECTION WITH THE FORMATION TRANSACTIONS

                         NUMBER OF                            POTENTIAL REALIZABLE
                         SECURITIES                                 VALUE AT
                         UNDERLYING   EXERCISE                   ASSUMED ANNUAL
                          OPTIONS     OR BASE                    RATES OF SHARE
                          GRANTED      PRICE      EXPIRATION   PRICE APPRECIATION
                           (#)(1)   PER SHARE(2)   DATE(3)     FOR OPTION TERM(4)
                         ---------- ------------ ------------ ---------------------
                                                                 (IN THOUSANDS)
                                                                  5%        10%
                                                              ---------- ----------
John B. Kilroy, Sr. ....   15,000      $20.00    January 2007 $      383 $      778
John B. Kilroy, Jr. ....  250,000      $20.00    January 2007     $3,144     $7,969


(1) The options granted to Messrs. Kilroy will vest in three equal installments on the first, second and third anniversaries of the date of the grant.

(2) Assuming an initial public offering price of the Common Stock of $20.00 per share. The option price will be equal to the initial public offering price of the Common Stock.

(3) The expiration date of the options will be ten years after the date of grant.

(4) The potential realizable value is reported net of the option price, but before income taxes associated with exercise. These amounts represent assumed annual compounded rates of appreciation at 5% and 10% only from the date of grant to the expiration date of the option.

No third party determination of the value of the Properties was sought or obtained in connection with the acquisition by the Operating Partnership of the Properties, and the terms of each of the Option Agreements relating to the Excluded Properties were not determined through arm's-length negotiations. There can be no assurance that the aggregate value of the consideration received by the participants in the Formation Transactions, including the grant of the options relating to the Excluded Properties, is equivalent to the fair market value of the properties and assets acquired by the Company and the Operating Partnership in connection with the Formation Transactions. See "Risk Factors--No Appraisals; Consideration to be Paid for Properties

42

and Other Assets May Exceed their Fair Market Value" and "--Conflicts of Interest--Competitive Real Estate Activities of Management."

DETERMINATION AND VALUATION OF OWNERSHIP INTERESTS

The Company's percentage interest in the Operating Partnership was determined based upon the percentage of estimated cash available for distribution required to pay estimated cash distributions to stockholders of the Company representing an annual distribution rate equal to 7.75% of the assumed initial public offering price of the Common Stock of $20.00. The ownership interest in the Operating Partnership allocated to the Company is equal to this percentage of estimated cash available for distribution and the remaining interest in the Operating Partnership will be allocated to the Continuing Investors receiving Units in the Formation Transactions. The parameters and assumptions used in deriving the estimated cash available for distribution are described under the caption "Distribution Policy."

Based on the issuance of 11,300,000 shares of Common Stock in the Offering plus 60,000 restricted shares of Common Stock to Richard E. Moran Jr. (who is not a Continuing Investor), the Company will hold an approximately 80.8% ownership interest in the Operating Partnership and the Continuing Investors will hold an approximately 19.2% ownership interest in the Operating Partnership. If the Underwriters' over-allotment option is exercised in full, the Company will hold an approximately 82.9% ownership interest in the Operating Partnership and the Continuing Investors will hold an approximately 17.1% ownership interest in the Operating Partnership.

In connection with the Offering, the Company did not obtain appraisals with respect to the market value of any of the Properties or other assets that the Company will own immediately after consummation of the Offering and the Formation Transactions or an opinion as to the fairness of the allocation of shares to the purchasers in the Offering. The initial public offering price will be determined based upon the estimated cash available for distribution and the factors discussed under the caption "Underwriting," rather than a property by property valuation based on historical cost or current market value. This methodology has been used because management believes it is appropriate to value the Company as an ongoing business rather than with a view to values that could be obtained from a liquidation of the Company or of individual properties owned by them. See "Underwriting."

ALLOCATION OF CONSIDERATION IN THE FORMATION TRANSACTIONS

No independent valuations or appraisals of the Properties were obtained in connection with the Formation Transactions. The allocation of Units among the Continuing Investors was based primarily on the relative contributions to net operating income and other factors relating to the value of the Company as an on-going enterprise, and generally was not determined through arm's-length negotiations. There can be no assurance that the fair market value of the Properties transferred to the Company will equal the sum of the value of the Units issued to the Continuing Investors.

Certain Continuing Investors (the "Indemnitors") have agreed pursuant to a supplemental representations, warranties and indemnity agreement, a form of which has been filed as an exhibit to the Registration Statement of which this Prospectus is a part, to make certain representations and warranties concerning the Properties, and have also agreed to indemnify the Company against breaches of such representations and warranties. These representations and warranties will survive the closing of the Offering until June 1998 and the related indemnification obligations generally will be joint and several among the Indemnitors. Fifty percent of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries in the Formation Transactions will be pledged to secure their indemnification obligations under the supplemental representations, warranties and indemnity agreement.

43

FORMATION OF KILROY SERVICES, INC.

Prior to consummation of the Offering, Kilroy Services, Inc. will be formed under the laws of the State of Maryland to succeed to the development activities of the Kilroy Group. John B. Kilroy, Sr. and John B. Kilroy, Jr. together will own 100% of the voting common stock of the Services Company, representing 5.0% of its economic value. The Operating Partnership will own 100% of the nonvoting preferred stock of the Services Company, representing 95.0% of its economic value. The ownership structure of the Services Company is necessary to permit the Company to share in the income of the activities of the Services Company and also maintain its status as a REIT. Although the Company anticipates receiving substantially all of the economic benefit of the businesses carried on by the Services Company through the Company's right to receive dividends through the Operating Partnership's investment in the Services Company's nonvoting preferred stock, the Company will not be able to elect the Services Company's officer or directors and, consequently, may not have the ability to influence the operations of the Services Company or require the declaration of dividends. See "Risk Factors--Risks of Development Business and Related Activities Being Conducted by the Services Company-- Adverse Consequences of Lack of Control Over the Businesses of the Services Company."

The Services Company initially will have three directors, including Campbell Hugh Greenup, who also serves as the General Counsel of the Company, and Jeffrey C. Hawken, who also serves as the Executive Vice President and Chief Operating Officer of the Company. See "Management." In addition, the Services Company will have a third and independent director. Campbell Hugh Greenup will serve as the Services Company's President and Secretary, and David Armanetti will serve as its Vice President of Development Services and Treasurer. Prior to the Offering, Mr. Greenup was a Senior Vice President for Development of KI and Mr. Armanetti was a Vice President for Development of KI.

44

THE COMPANY

GENERAL

The Company has been formed to succeed to the business of the Kilroy Group consisting principally of a portfolio of Class A suburban office and industrial buildings in prime locations primarily in Southern California, and the Kilroy Group's real estate ownership, acquisition, development, leasing and management businesses. Upon the consummation of the Offering and the Formation Transactions, the Company (through the Operating Partnership) will own 14 Office Properties encompassing an aggregate of approximately 2.0 million rentable square feet and 12 Industrial Properties encompassing an aggregate of approximately 1.3 million rentable square feet. Eleven of the 14 of the Office Properties and 11 of the 12 Industrial Properties are located in prime Southern California suburban submarkets (including a complex of three Office Properties located in El Segundo, adjacent to Los Angeles International Airport, presently the nation's second largest air-cargo port, and a complex of five Office Properties located adjacent to the Long Beach Municipal Airport). The Company also will own three Office Properties located adjacent to the Seattle-Tacoma International Airport in the State of Washington and one Industrial Property located in Phoenix, Arizona. As of September 30, 1996, the Office Properties were approximately 79.8% leased to 130 tenants and the Industrial Properties were approximately 93.7% leased to 20 tenants. The average age of the Office Properties and the Industrial Properties is approximately 12 years and 24 years, respectively. The Company developed and leased all but two of the 14 Office Properties and all but five of the 12 Industrial Properties, and upon consummation of the Offering and acquisition of the Acquisition Properties will manage all of the Properties.

The Company was founded in 1947 by John B. Kilroy, Sr., a nationally prominent member of the real estate community, and is led by John B. Kilroy, Jr., the Company's President since 1981. The Company's executive officers have been with the Company for an average of approximately 13 years. The Company has been involved in the ownership, acquisition, entitlement, development, leasing and management of commercial properties, the majority of which are located in Southern California, for nearly 50 years and has been focusing primarily on office and industrial development for the past 30 years. The Company presently has 47 employees, 34 of whom are located at the Company's headquarters at Kilroy Airport Center at El Segundo, California.

The Company's strategy has been to own, develop, acquire, lease and manage Class A properties in select locations in key suburban submarkets, primarily in Southern California, that the Company believes have strategic advantages compared to neighboring submarkets. The Company's extensive experience and long-term presence in Southern California have enabled it to form key alliances and working relationships with major corporate tenants, municipalities and landowners in Southern California that have resulted in a variety of development projects and provide an on-going source of development and acquisition opportunities. The Southern California Properties located in Los Angeles and Orange Counties are situated in locations which the Company believes are among the best within key submarkets, offering tenants: (i) lower business taxes and operating expenses than adjoining submarkets; (ii) access to highly skilled labor markets; (iii) access to major transportation facilities such as freeways, airports and the expanded Southern California light-rail system; (iv) proximity to the Los Angeles-Long Beach port complex, which presently ranks as the largest commercial port in the United States; and
(v) for tenants with their names on certain Properties, visibility to freeway and airline travelers.

The Company also has focused on the design and construction of its projects. The Office Properties developed by the Company (Kilroy Airport Center at El Segundo, Kilroy Airport Center Long Beach and SeaTac Office Center) were designed and developed to above-standard specifications, with an emphasis on long-term operating efficiency and tenant comfort. The Industrial Properties also were designed and developed to provide above-standard quality and meet the long-term needs of tenants and were designed as multi-use facilities to satisfy various types of manufacturing, distribution and office uses. As a result, the Industrial Properties continue to serve the evolving needs of their tenants, some of which have recently invested substantially in long-term tenant improvements. As a result of the high quality and strategic location of the Properties, and the Company's attention to the highest quality management and service, the Company believes that the Properties attract major corporate tenants and historically have achieved among the highest occupancy, tenant retention and rental rates,

45

both within their respective submarkets and as compared to their respective neighboring submarkets. See "Business and Properties--Office Properties" and "--Industrial Properties."

The Company has created value by effectively working with municipalities, large landowners and other members of the real estate community in Southern California, and has maintained strong relationships at all levels of government, as well as with financial institutions and major corporate tenants. In 1981, the Company initiated the El Segundo Employers' Association, a traffic and management organization composed of major employers in the El Segundo area. The organization has worked with local government and has been instrumental in the furtherance of infrastructure developments in El Segundo and throughout the surrounding area, including two recent developments that management believes will have a substantial economic benefit to the El Segundo submarket. First, in October 1994, Interstate Highway I-105 (the "I-105 Freeway") opened, which crosses Los Angeles from east to west and provides substantially improved access to El Segundo and Los Angeles International Airport. A second infrastructure development in the El Segundo submarket is a major east-west grade-separated light rail commuter line (the "Green Line"). The Green Line runs adjacent to Kilroy Airport Center at El Segundo. Management believes that the Green Line, which opened in August 1995, will add significant value to the El Segundo submarket. See "Business and Properties-- The Company's Southern California Submarkets--El Segundo Submarket."

The Company's major tenants include, among others, Hughes Space & Communications, a tenant since 1984, which is engaged in high-technology commercial activities including satellite development and related applications such as DirecTV, as well as CompuServe, Inc., Employer's Health Insurance Co., the Federal Aviation Administration, First Nationwide Mortgage Corporation, Furon Co., Inc., GTE Directories Sales Corporation, Great Western Bank, HealthNet, Mattel, Inc. (which has its worldwide corporate headquarters in El Segundo), North American Title Company, Northwest Airlines, Inc., Olympus America, Inc., The Prudential Insurance Company of America, R.L. Polk & Company, SCAN HealthPlan, Senn-Delaney Leadership Consulting Group, Inc., Transamerica Financial Services, Inc., 20th Century Industries, UniCare Financial Corporation and Unihealth. As of December 31, 1995, the Company's ten largest office tenants and ten largest industrial tenants (based upon annual base rents as of December 31, 1995) had leased office space from the Company for an average of 5.3 years. The Company's strong relationships with its tenants is further evidenced by its average tenant retention rate (based upon rentable square feet) for the two-year and nine-month period ended September 30, 1996, which was 71.7% for the Properties located in the Southern California Area and 50.9% for the Properties overall. The lower overall retention rate results primarily from the 1993 termination of a lease for 211,000 net rentable square feet at the SeaTac Office Center. The Company's extensive experience and long-term presence in Southern California have enabled it to form key alliances and working relationships with large corporate tenants, municipalities and landowners that have led to a variety of development projects and provide a continuing source of development and acquisition opportunities with institutional sellers. As a result of its experience and relationships, the Company currently has exclusive rights to develop approximately 24 acres of developable land (net of the acreage required for streets) at Kilroy Airport Center Long Beach. These properties are presently entitled for over 900,000 rentable square feet of office, industrial and retail space.

The Company believes that the foundation for its growth in future years will be the strengthening Southern California economy, the quality and strategic location of its Properties, the economic benefits of its submarkets to tenants, its capital structure, its access to public capital markets, the lack of new construction of office properties in its submarkets, its access to developable properties, the knowledge and experience of its senior management team and its long-term relationships with the Southern California real estate community, large corporate tenants, municipalities, landowners and institutional sellers. In addition, the Company believes that it will be one of a limited number of REITs focusing on office and industrial properties and that it will be the only REIT with a 50-year operating history concentrating primarily on suburban Southern California office and industrial properties. In the 12 months following the consummation of the Offering, the Company expects sources of potential growth in cash available for distribution per share from the amount set forth under the caption "Distribution Policy," through: (i) the further leasing of its available space, currently approximately 400,000 rentable square feet; (ii) the renewal of leases for approximately 60,000 rentable square feet which

46

expire during such period; and (iii) the acquisition of strategic properties with Units and/or with available cash and borrowings under the proposed Credit Facility and its approximately $20.0 million of working capital cash reserves, upon consummation of the Offering. In the second 12-month period following consummation of the Offering, the Company expects sources of potential growth in cash flow per share from: (i) contractual increases in base rent payments from tenants; (ii) continued leasing of available space; (iii) the acquisition of strategic properties; and (iv) the contemplated completion of certain planned development activities. In addition, the Company presently plans to expand one or more of its Industrial Properties during the next two years, subject to substantial pre-leasing. There can be no assurance, however, that the Company will achieve any growth in cash available for distribution per share, that available space will be leased, that leases scheduled to expire will be renewed, that the Company will successfully complete any of its planned development activities or that the Company will be able to acquire and develop any of the Development Properties or other properties that may become available. See "Risk Factors--Real Estate Investment Considerations--Risks of Real Estate Acquisition and Development."

The Company will continue its practice of managing or administering substantially all leasing, management, tenant improvements and construction on an "in-house" basis and will be self-administered and self-managed. The Company intends to elect to qualify as a REIT for federal income tax purposes beginning with its taxable year ending December 31, 1997. See "Federal Income Tax Consequences--Taxation of the Company."

Kilroy Realty Corporation, a Maryland corporation, has executive offices at 2250 East Imperial Highway, El Segundo, CA 90245 and its telephone number is
(213) 772-1193.

GROWTH STRATEGIES

The Company's objectives are to maximize growth in cash flow per share and to enhance the value of its portfolio through effective management, operating, acquisition and development strategies. The Company believes that opportunities exist to increase cash flow per share: (i) by acquiring office and industrial properties with attractive returns in strategic suburban submarkets where such properties complement its existing portfolio; (ii) from contractual increases in base rent; (iii) as a result of increasing rental and occupancy rates and decreasing concessions and tenant installation costs as vacancy rates in the Company's submarkets generally continue to decline; (iv) by developing properties for the benefit of the Company where such development will result in a favorable risk-adjusted return on investment; and (v) by expanding Properties within the Company's existing industrial portfolio. The Company's ability to achieve its growth strategy will be aided by its working capital cash reserves of approximately $20.0 million upon consummation of the Offering and the proposed Credit Facility.

The Company believes that a number of factors will enable it to achieve its business objectives, including: (i) the opportunity to lease available space at attractive rental rates because of increasing demand and, with respect to the Office Properties, the present lack of new construction in the Southern California submarkets in which most of the Properties are located; (ii) the presence of distressed sellers and inadvertent owners (through foreclosure or otherwise) of office and industrial properties in the Company's markets, as well as the Company's ability to acquire properties with Units (thereby deferring the seller's taxable gain), all of which create enhanced acquisition opportunities; (iii) the quality and location of the Properties; (iv) the Company's access to development opportunities as a result of its significant relationships with large Southern California corporate tenants, municipalities and landowners and its nearly 50-year presence in the Southern California market; and (v) the limited availability to competitors of capital for financing development, acquisitions or capital improvements. Management believes that the Company is well positioned to exploit existing opportunities because of its extensive experience in its submarkets, its seasoned management team and its proven ability to develop, lease and efficiently manage office and industrial properties. In addition, the Company believes that public ownership and its capital structure will provide new opportunities for growth. There can be no assurance, however, that the Company will be able to lease available space, complete any property acquisitions, successfully develop any land acquired or improve the operating results of any developed properties that are acquired. See "Business and Properties--Development, Leasing and Management Activities."

47

Operating Strategies. The Company will focus on enhancing growth in cash flow per share by: (i) maximizing cash flow from existing Properties through active leasing, contractual base rent increases and effective property management; (ii) managing operating expenses through the use of in-house management, leasing, marketing, financing, accounting, legal, construction management and data processing functions; (iii) maintaining and developing long-term relationships with a diverse tenant group; (iv) attracting and retaining motivated employees by providing financial and other incentives to meet the Company's operating and financial goals; and (v) continuing to emphasize capital improvements to enhance the Properties' competitive advantages in their markets.

The Company believes that the strength of its leasing is demonstrated by the Company's leasing activity since 1993. In the period from January 1, 1993 to September 30, 1996, the Company leased or renewed leases for an aggregate of approximately 1.0 million rentable square feet of office space and approximately 718,000 rentable square feet of industrial space. As of December 31, 1995, the Office Properties in the Southern California Area were approximately 89.5% leased as compared to approximately 82.0% for the Southern California Area, approximately 89.2% for the El Segundo submarket and approximately 85.4% in the Long Beach submarket. In addition, at December 31, 1995, the Industrial Properties were approximately 91.4% leased as compared to approximately 82.3% and approximately 87.1% for industrial properties located in Los Angeles and Orange Counties, respectively. As of September 30, 1996,
(i) the Office Properties contained approximately 2.0 million rentable square feet and were approximately 79.8% leased, and (ii) the Industrial Properties contained an aggregate of approximately 1.3 million rentable square feet and were approximately 93.7% leased. In addition, the number of individual lease transactions since 1992, including the results for the nine-month period ended September 30, 1996, averaged over 33 per year. See "Business and Properties-- General," "--Properties," "--Occupancy and Rental Information," and "--The Company's Southern California Submarkets."

Approximately 1.0 million aggregate rentable square feet in the Properties was leased by the Company from January 1, 1992 through December 31, 1994, a period which management characterizes as recessionary. Based on the leases the Company signed in 1996, and the findings in an independent study of the Southern California real estate market commissioned by the Company, management believes that the recent trend toward increasing rental rates in Class A office and industrial buildings in the Company's Southern California submarkets presents significant opportunities for growth. In addition, approximately 66.5% of the Company's net rentable square feet is subject to leases expiring in 2000 or beyond, when management expects asking rents for the respective Properties to be higher than the rents paid pursuant to such leases. In addition, as of December 31, 1996 approximately 36.7% of the Company's total base rent (representing approximately 23.7% of the aggregate net rentable square feet of the Properties) was attributable to leases with Consumer Price Index increases and approximately 28.1% of the Company's total base rent (representing approximately 30.5% of the aggregate net rentable square feet of the Properties) is attributable to leases with other specified contractual increases. No assurance can be given, however, that new leases will reflect rental rates greater than or equal to current rental rates or future economic conditions will support higher rental rates. See "Risk Factors--Real Estate Investment Considerations."

Acquisition Strategies. The Company will seek to increase its cash flow per share by acquiring additional quality office and industrial properties, including properties that may: (i) provide attractive initial yields with significant potential for growth in cash flow from property operations; (ii) are strategically located, of high quality and competitive in their respective submarkets; (iii) are located in the Company's existing submarkets and/or in other strategic submarkets where the demand for office and industrial space exceeds available supply; or (iv) have been under-managed or are otherwise capable of improved performance through intensive management and leasing that will result in increased occupancy and rental revenues. The Company believes that the Southern California market is an established and mature real estate market in which property owners generally have a low tax basis (and, accordingly, the potential for large taxable gains) in their properties. Management believes that the Company's extensive experience, capital structure and ability to acquire properties for Units, and thereby defer a seller's taxable gain, if any, will enhance the ability of the Company to consummate transactions quickly and to structure more competitive acquisitions than other real estate companies

48

in the market which lack its access to capital or the ability to issue Units. See "Business and Properties-- Development, Leasing and Management Activities."

The Company has entered into an agreement to acquire the two office properties that comprise Phase I of Kilroy Airport Center Long Beach. Kilroy Airport Center Long Beach Phase I was developed by the Company in 1987 and has been leased and managed by the Company since its inception. In addition, the Company has entered into an agreement to purchase an office property located in Thousand Oaks, California. The Company also has entered into an agreement to acquire a three building office and industrial complex located in Anaheim, California. Furthermore, KI, on behalf of the Operating Partnership, has acquired a multi-tenant industrial property located in Garden Grove, California. The acquisition of the Acquisition Properties by the Company is expected to occur concurrently with the consummation of the Offering and, accordingly, the Acquisition Properties are included in the discussion of the Properties included throughout this Prospectus. There can be no assurance, however, that the Company will be able to complete any property acquisitions, including the acquisition of the Acquisition Properties, successfully develop any land acquired or improve the operating results of any developed properties that are acquired. See "Business and Properties--Acquisition Properties."

Development Strategies. The Company's interests in the Development Properties provide it with significant growth opportunities.

The Company is the master ground lessee of, and has sole development rights in, Kilroy Airport Center Long Beach, a planned four-phase, approximately 53- acre property entitled for office, research and development, light industrial and other commercial projects at which the Company will own, upon consummation of the Offering, all five existing Office Properties and manages all ongoing leasing and development activities. The Company developed Phases I and II in 1987 and 1989/1990, respectively, encompassing an aggregate of approximately 620,000 rentable square feet of office and light industrial space. The Company controls development of the Phase III and IV parcels while receiving rental revenue in connection with such parcels under current leases expiring in July 2009 and September 1998, respectively, in amounts sufficient to cover a substantial portion of the predevelopment carrying costs. Phases III and IV presently are planned to be developed on the project's approximately 24 undeveloped acres and are entitled for an aggregate of approximately 900,000 rentable square feet. The Company is currently in discussions with several prospective tenants for office space presently planned to be included in Kilroy Long Beach Phase III. Development of each of Phases III and IV is subject to substantial predevelopment leasing activity and, therefore, the timing for the commencement of development of Phases III and IV is uncertain. No assurance can be given that the Company will commence such development when planned, or that, if commenced, such development will be completed. See "Risk Factors--Real Estate Investment Considerations--Risks of Real Estate Acquisition and Development" and "Business and Properties--Development, Leasing and Management Activities--Kilroy Long Beach."

In addition, certain of the Industrial Properties can support additional development, and the Company presently is planning to develop in the next two years, subject to substantial pre-leasing, approximately 105,000 rentable square feet of such additional space.

The Company may engage in the development of other office and/or industrial properties primarily in Southern California submarkets when market conditions support a favorable risk-adjusted return on such development. The Company's activities with third-party owners in Southern California are expected to give the Company further access to development opportunities. There can be no assurance, however, that the Company will be able to successfully develop any of the Development Properties or any other properties. See "Business and Properties--Development, Leasing and Management Activities."

Financing Policies. The Company's financing policies and objectives are determined by the Company's Board of Directors. The Company presently intends to limit the ratio of debt to total market capitalization (total debt of the Company as a percentage of the market value of issued and outstanding shares of Common Stock, including interests exchangeable therefor, plus total debt) to approximately 50%. However, such objectives may be altered without the consent of the Company's stockholders, and the Company's organizational documents do

49

not limit the amount of indebtedness that the Company may incur. Upon completion of the transactions outlined under the caption "Formation and Structure of the Company," total debt will constitute approximately 25.5% of the total market capitalization of the Company (assuming an initial public offering price of $20.00 per share of Common Stock). In addition, upon consummation of the Offering, the Company will have working capital cash reserves of approximately $20.0 million. The Company anticipates that upon consummation of the Offering all but approximately $12.0 million of the permanent indebtedness will bear interest at fixed rates. The Company intends to utilize one or more sources of capital for future acquisitions, including development and capital improvements, which may include undistributed cash flow, borrowings under the proposed Credit Facility, the Company's approximately $20.0 million of working capital cash reserves out of the net proceeds of the Offering, issuance of debt or equity securities and other bank and/or institutional borrowings. There can be no assurance, however, that the Company will be able to obtain capital for any such acquisitions, developments or improvements on terms favorable to the Company. See "--Growth Strategies," "The Company--Growth Strategies" and "Business and Properties--Development, Leasing and Management Activities."

50

USE OF PROCEEDS

The net proceeds to the Company from the sale of Common Stock in the Offering (based on the midpoint of the range of the initial public offering price set forth on the cover page of this Prospectus), after deduction of underwriting discounts and commissions and estimated offering expenses, are expected to be approximately $206.6 million (approximately $238.1 million if the Underwriters' over-allotment option is exercised in full). In addition to the net proceeds from the Offering, the Operating Partnership expects to receive net proceeds from the Mortgage Loans, after payment of expenses related thereto, of approximately $95.5 million. The Company intends to apply the net proceeds of the Offering and from the Mortgage Loans as follows:

                                                               AMOUNT
                                                           --------------
                                                           (IN THOUSANDS)
Repayment of existing mortgage debt (net of
 discounts/premiums)......................................    $229,452
Purchase price of the Acquisition Properties..............      48,962
Working capital cash reserves.............................      20,000
Capital expenditure cash reserves.........................       2,336
Financing expenses........................................       1,350
                                                              --------
    Total.................................................    $302,100
                                                              ========

Upon consummation of the Offering, the estimated amount of indebtedness of the Kilroy Group secured by the Properties which is to be repaid with net proceeds of the Offering and the Financing will be approximately $229.5 million (including accrued interest and loan fees), of which approximately $37.2 million has been guaranteed by certain members of the Kilroy Group, including officers and directors of the Company. An aggregate of approximately $32.1 million of indebtedness was incurred within the last year, of which $1.5 million was incurred to finance tenant improvements and to pay leasing commissions related to Kilroy Airport Center Long Beach, $9.1 million was incurred by KI (on behalf of the Company) to acquire the Industrial Property located at 12752-12822 Monarch Street, Garden Grove, California (including expenses at closing) and $21.5 million was used to repay $16.6 million of existing indebtedness (including $3.4 million of indebtedness of John B. Kilroy, Sr., the Chairman of the Company's Board of Directors, and accrued interest and prepayment penalties in connection with such repayments), and to pay approximately $940,000 in property taxes and approximately $454,000 in loan costs, legal fees and other expenses in connection with such financing, with the remainder being contributed to working capital.

The approximately $49.0 million to be used to purchase the Acquisition Properties referenced above represents the aggregate purchase price paid or to be paid (including expenses at closing) pursuant to executed agreements for the acquisition of Kilroy Airport Center Long Beach Phase I, the Westlake Office Plaza and the Anaheim Office and Industrial Properties. The acquisition of the Industrial Property located at 12752-12822 Monarch Street, Garden Grove, California is reflected in the repayment of existing mortgage debt (net of discounts/premiums) referenced above, as this amount was incurred by KI on behalf of the Company to acquire the property prior to consummation of the Offering based on the closing schedule required by the seller. See "Business and Properties--Acquisition Properties."

In addition, the Company presently intends to use the approximately $2.3 million of capital expenditure cash reserves to pay to Hughes Space & Communications, in connection with Formation Transactions, the remaining balance of approximately $1.4 million in connection with the amendment and/or extension of leases of office space at the Office Properties located at Kilroy Airport Center, including $500,000 in connection with a tenant improvement allowance for the properties located at 2240 and 2250 E. Imperial Highway and the balance in connection with the cancellation of an option to purchase an equity interest in the Office Properties located at Kilroy Airport Center at El Segundo. Also from such $2.3 million capital expenditure cash reserves, in connection with the Financing, the Company will make earthquake-related improvements to certain of the Properties in an aggregate amount of approximately $500,000.

51

The following table presents the balances, as of September 30, 1996, and the expected balances as of the date the Offering is consummated, of the mortgages and loans (which are all of the current outstanding mortgages and loans on the Properties) intended to be repaid out of the net proceeds of the Offering. The mortgages expected to be repaid upon completion of the Offering had a weighted average interest rate of approximately 8.74% and a weighted average remaining term to maturity of approximately 3.14 years as of September 30, 1996.

                                                                                      EXPECTED BALANCE AS OF
                                                                     BALANCE AS OF         THE DATE THE
PROPERTY LOCATION                                                  SEPTEMBER 30, 1996 OFFERING IS CONSUMMATED
- -----------------                                                  ------------------ -----------------------
                                                                                 (IN THOUSANDS)
Kilroy Airport Center at El Segundo }
 2240 E. Imperial Highway           }
 2250 E. Imperial Highway           }..........................         $ 94,799             $ 93,999
 2260 E. Imperial Highway           }
  El Segundo, California            }

Kilroy Airport Center Long Beach    }
 3750 Kilroy Airport Way            }
 3760 Kilroy Airport Way            }..........................           56,168               56,168
 3780 Kilroy Airport Way            }
  Long Beach, California            }

SeaTac Properties Ltd.              }
 17900 Pacific Highway              }
 17930 Pacific Highway              }..........................           20,162               16,100
 18000 Pacific Highway              }
  Seattle, Washington               }

2031 E. Mariposa Avenue
 El Segundo, California(1).....................................           12,000               12,000
3332 E. La Palma Avenue
 Anaheim, California...........................................            7,589                7,580

2260 E. El Segundo Boulevard        }
 El Segundo, California             }
2265 E. El Segundo Boulevard        }
 El Segundo, California             }
2270 E. El Segundo Boulevard        }
 El Segundo, California             }
185 S. Douglas Street               }
 El Segundo, California(2)          }..........................           21,523(3)            21,525(3)

1000 E. Ball Road                   }
 Anaheim, California(1)             }
1230 S. Lewis Street                }..........................            5,536                5,506
 Anaheim, California(1)             }

12681/12691 Pala Drive
 Garden Grove, California......................................            3,267                3,264
5115 N. 27th Avenue
 Phoenix, Arizona..............................................            3,000                3,000
12752-12822 Monarch Street
 Garden Grove, California......................................              --                 9,060(4)
                                                                        --------             --------
                                                                        $224,046             $228,202
                                                                        ========             ========

(footnotes on next page)

52


(1) This property is also subject to a second mortgage securing the indebtedness referenced in note (3) below which will be repaid with the net proceeds of the Offering. This property is also subject to a mortgage securing the $9.1 million aggregate principal amount of indebtedness (including related expenses incurred in connection therewith) referenced in note (4) below which will be repaid with the net proceeds of the Offering.

(2) This property is also subject to a mortgage securing the $9.1 million aggregate principal amount of indebtedness (including related expenses incurred in connection therewith) referenced in note (4) below, which will be repaid with the net proceeds of the Offering.

(3) This indebtedness is also secured by a second mortgage on the properties located at 1000 East Ball Road, Anaheim, California, 1230 S. Lewis Street, Anaheim, California and 2031 E. Mariposa Avenue, El Segundo, California.

(4) Represents the principal amount of indebtedness incurred on December 19, 1996, by KI on behalf of the Company, in connection with the acquisition of the Industrial Property located at 12752-12822 Monarch Street, Garden Grove, California, plus accrual of related closing expenses. See "Business and Properties--Acquisition Properties--12752-12822 Monarch Street, Garden Grove, California." The indebtedness matures on the earlier of the date on which the Offering is consummated and June 20, 1997 and, as of December 31, 1996, had an interest rate of approximately 8.41%.

In the event that the Underwriters' over-allotment option is exercised, the net proceeds thereof will be used by the Company for additional working capital and will be available for development and for future acquisitions of additional properties not yet identified. Pending application of such net proceeds, the Company will invest the net proceeds in interest-bearing accounts and short-term, interest-bearing securities, which are consistent with the Company's intention to qualify for taxation as a REIT. Such investments may include, for example, obligations of the Governmental National Mortgage Association, other government and government agency securities, certificates of deposit and interest-bearing bank deposits.

DISTRIBUTION POLICY

The Company presently intends to make regular quarterly distributions to holders of its Common Stock. The first distribution, for the period commencing upon the consummation of the Offering and ending March 31, 1997, is anticipated to be approximately $ per share (which is equivalent to a quarterly distribution of $.3875 per share or an annual distribution of $1.55 per share) which results in an initial annual distribution rate of 7.75%, based on the midpoint of the range of the initial public offering price set forth on the cover page of this Prospectus. The Company does not expect to change its estimated distribution rate if any of the Underwriters' over- allotment option is exercised. The Company currently expects to distribute approximately 93.6% of estimated cash available for distribution for the 12 months following the consummation of the Offering. Units and shares of Common Stock will receive equal distributions. The Board of Directors may vary the percentage of cash available for distribution which is distributed if the actual results of operations, economic conditions or other factors differ from the assumptions used in the Company's estimates.

The Company believes that its estimate of cash available for distribution constitutes a reasonable basis for setting the initial distribution rate and is made solely for the purpose of setting the initial distribution rate and is not intended to be a projection or forecast of the Company's results of operations or of its liquidity. The Company presently intends to maintain the initial distribution rate for the 12 months following the consummation of the Offering unless actual results from operations, economic conditions or other factors differ significantly from the assumptions used in its estimate. However, no assurance can be given that the Company's estimate will prove accurate. The actual return that the Company will realize will be affected by a number of factors, including the revenue received from the Properties, the distributions and other payments received from the Operating Partnership and Services Company (which in turn is based in part on revenues received from development activities), the operating expenses of the Company, the interest expense incurred on its borrowings, the ability of tenants to meet their obligations, general leasing activity and unanticipated capital expenditures. See "Risk Factors--Real Estate Investment Considerations."

53

The following table illustrates the adjustments made by the Company to its pro forma Funds from Operations for the twelve months ended September 30, 1996 in order to calculate estimated cash available for distribution:

                                                                  AMOUNT
                                                                  ------
                                                              (IN THOUSANDS,
                                                                EXCEPT PER
                                                              SHARE AMOUNTS)
Pro forma net income before minority interests for the year
 ended December 31, 1995.....................................    $ 15,630
Plus pro forma net income before minority interests for the
 nine months ended September 30, 1996........................       7,067
Less pro forma net income before minority interests for the
 nine months ended September 30, 1995........................     (12,428)
                                                                 --------
Pro forma net income before minority interests for the 12
 months ended September 30, 1996(1)..........................      10,269
Add non-cash items:
  Pro forma depreciation for the 12 months ended September
   30, 1996(2)...............................................       9,205
  Pro forma amortization for capitalized leasing commissions
   for the 12 months ended September 30, 1996(2).............       1,041
  Nonrecurring item and non-cash compensation(3).............       3,550
                                                                 --------
Pro forma Funds from Operations for the 12 months ended
 September 30, 1996..........................................      24,065
Adjustments:
  Net increases in contractual rental income(4)..............         305
  Net increase from new leases(5)............................       4,113
  Net effect of lease expirations, assuming no renewals(6)...      (4,052)
  Net effect of straight-line rents(7).......................         293
  Interest income on excess cash from proceeds of
   Offering(8)...............................................       1,022
                                                                 --------
Estimated cash flow from operating activities for the 12
 months ending January 31, 1998..............................      25,746
Estimated capitalized tenant improvements and leasing
 commissions(9)..............................................      (1,117)
Estimated capital expenditures(10)...........................        (310)
Scheduled debt principal payments(11)........................      (1,060)
                                                                 --------
Estimated cash available for distribution for the 12 months
 ending January 31, 1998.....................................    $ 23,259
                                                                 ========
  Company's share of cash available for distribution(12).....    $ 18,793
  Minority interest's share of cash available for
   distribution..............................................    $  4,466
                                                                 ========
Total estimated initial annual distribution..................    $ 21,781
                                                                 ========
Estimated initial annual distribution per share..............    $   1.55
                                                                 ========
Estimated cash available for distribution payout ratio(13)...        93.6%
                                                                 ========


(1) The effect of including the Services Company was a reduction in Funds from Operations of $50,000 during such period.
(2) Pro forma depreciation of $9,595,000 for the year ended December 31, 1995 plus $6,773,000 for the nine months ended September 30, 1996 less $7,163,000 for the nine months ended September 30, 1995. Pro forma amortization of $985,000 for the year ended December 31, 1995 plus $895,000 for the nine months ended September 30, 1996 less $839,000 for the nine months ended September 30, 1995. Amortization consists primarily of amortization of deferred leasing commissions. Non-cash interest expense of $60,000 for the year ended September 30, 1996 related to amortization of the costs associated with the Mortgage Loans is not added back in this table in conformity with NAREIT's definition of Funds from Operations.
(3) Includes elimination of the cost to buy out an option held by a third party to acquire a portion of a Property ($3,150,000) and compensation expense relating to a restricted Common Stock grant ($400,000).
(4) Represents an incremental increase in Funds from Operations attributable to contractual rental increases for the 12 months ending January 31, 1998 (over actual rental revenue included in pro forma Funds from Operations for the 12 months ended September 30, 1996). The contractual rental increases are limited to the actual number of months in which the increased rental rate will be in effect as to each lease.

(footnotes continued on next page)

54

(5) Represents the incremental increase in Funds from Operations attributable to rental revenue from new executed leases commencing after September 30, 1995 for the 12 months ending January 31, 1998.

(6) Represents the elimination of rental revenue reflected in rental revenue for the 12 months ended September 30, 1996 from: (i) leases which expired between September 30, 1995 and September 30, 1996 ($1,249,000) and (ii) leases which will expire between October 1, 1996 and January 31, 1998 for that portion of the 12 months ending January 31, 1998 that such leases are no longer in effect ($2,803,000).

This table assumes that leases which expire prior to January 31, 1998 will not be renewed or re-leased during the period. As a result of this assumption, the effective average occupancy rate of the Properties for the 12-month period ending January 31, 1998 will equal approximately 87.2%, versus the actual occupancy rate for the Properties of approximately 88.2% as of December 31, 1996. The Company's average tenant retention rate for expiring leases for January 1, 1994 through September 30, 1996 was approximately 71.7% for the Properties located in the Southern California Area and 50.9% for the Properties overall.

(7) Represents the effect of adjusting straight-line rental income and expense included in pro forma net income from an accrual basis under GAAP to a cash basis.

(8) Represents estimated interest earned at 5% on working capital cash reserves of $20,444,000.

(9) Reflects projected non-incremental revenue-generating tenant improvement ("TI") and leasing commission ("LC") for the 12-month period ending January 31, 1998 based on the weighted average TI and LC expenditures for all renewed and retenanted space incurred during 1993, 1994, 1995 and the nine months ended September 30, 1996, multiplied by the average annual net rentable square feet of leased space expiring during the three 12- month periods following the consummation of the Offering.

                                                                 WEIGHTED
                                       1993   1994  1995  1996   AVERAGE
                                       ----- ------ ----- ----- ----------
OFFICE PROPERTIES:
  Retenanted
    TI per net rentable square foot..  $5.21 $20.82 $4.76 $8.62 $    12.50
    LC per net rentable square foot..  $1.85 $ 3.56 $4.23 $3.85       3.41
                                                                ----------
      Total weighted average TI and
       LC............................                                15.91
      Average annual net rentable
       square feet of leased space
       expiring during the three 12-
       month periods following the
       Offering......................                              137,976
                                                                ----------
      Total estimated annual TI and
       LC............................                            2,195,198
      Rate of retenant(i)............                                   30%
                                                                ----------
      Total cost of retenants........                           $  659,000
  Renewals
    TI per net rentable square foot..  $ --  $  .28 $4.49 $4.01 $     2.89
    LC per net rentable square foot..  $ --  $  .07 $1.61 $1.02       0.80
                                                                ----------
      Total weighted average TI and
       LC............................                                 3.69
      Average annual net rentable
       square feet of leases expiring
       during the three 12-month
       periods following the
       Offering......................                              137,976
                                                                ----------
      Total estimated annual TI and
       LC............................                              509,131
      Rate of renewal(i).............                                   70%
                                                                ----------
        Total cost of renewals.......                              357,000
                                                                ----------
    Total TI and LC cost of Office
     Properties......................                            1,016,000
                                                                ----------
INDUSTRIAL PROPERTIES:
  TI per net rentable square foot....  $ .14 $ 4.49 $2.00 $ --  $     2.19
  LC per net rentable square foot....  $1.49 $ 3.49 $1.84 $ --        2.16
                                                                ----------
    Total weighted average TI and
     LC..............................                                 4.35
    Average annual net rentable
     square feet of leases expiring
     during the three 12-month
     periods following the Offering..                               23,333
                                                                ----------
    Total estimated annual TI and
     LC..............................                              101,000
                                                                ----------
  Total..............................                           $1,117,000
                                                                ==========

(footnotes continued on next page)

55


(i) The Company's historical weighted average renewal rate, based on net rentable square footage, from January 1, 1994 through September 30, 1996 was 71.7% for the Properties located in the Southern California Area and 50.9% for the Properties overall. The lower overall renewal rate results primarily from a 1993 termination of a lease for 211,000 square feet at the SeaTac Office Center. Management believes, based on historical figures and its review of market conditions in the Company's submarkets in which the Properties are located, that the assumption of a 70% renewal rate is reasonable.

(10) Estimated annual capital expenditures not reimbursed by tenants. The average of historical nonreimbursed capital expenditures at the Office and Industrial Properties during the years ended December 31, 1994 and 1995 was $150,000. All capital expenditures during 1993 were reimbursed by tenants.

(11) Estimated principal payments on the Mortgage Loans. Excludes the net effect of the refinancing of the SeaTac Loan.

(12) The Company's share of estimated distributions based on its approximately 80.8% partnership interest in the Operating Partnership.

(13) Calculated as the estimated initial annual distribution divided by the estimated cash flow available for distribution for the 12 months ending January 31, 1998. The payout ratio of estimated adjusted pro forma Funds from Operations (which is substantially equivalent to the Company's estimated pro forma cash flow from operating activities) for the 12 months ending January 31, 1998 equals 84.6%.

The Company anticipates that its estimated cash available for distribution will exceed earnings and profits due to non-cash expenses, primarily depreciation and amortization, to be incurred by the Company. Distributions by the Company to the extent of its current or accumulated earnings and profits for federal income tax purposes, other than capital gain dividends, will be taxable to stockholders as ordinary dividend income. Capital gain distributions generally will be treated as long-term capital gains. Distributions in excess of earnings and profits generally will be treated as a non-taxable return of capital to the extent of each stockholder's basis in his or her Common Stock to the extent thereof, and thereafter as taxable gain. The non-taxable distributions will reduce each stockholder's tax basis in the Common Stock and, therefore, the gain (or loss) recognized on the sale of such Common Stock or upon liquidation of the Company will be increased (or decreased) accordingly. Based on the estimated cash flow available for distribution set forth in the table above, the Company believes that approximately 10% of distributions for the 12 months following consummation of the Offering would represent a return of capital. If actual cash available for distribution or taxable income vary from these amounts, the percentage of distributions which represent a return of capital may be materially different. For a discussion of the tax treatment of distributions to holders of Common Stock, see "Federal Income Tax Consequences--Taxation of U.S. Stockholders" and "--Taxation of Non-U.S. Stockholders." In order to qualify to be taxed as a REIT, the Company must make annual distributions to stockholders of at least 95% of its REIT taxable income (determined without regard to the dividends received deduction and by excluding any net capital gains) which the Company anticipates will be less than its share of adjusted Funds from Operations. Under certain circumstances, the Company may be required to make distributions in excess of cash available for distribution in order to meet such distribution requirements.

Financing activities such as repayment or refinancing of loans also may affect the Company's assets and liabilities and the amount of cash available for distribution for future periods. Management will seek to control the timing and nature of investing and financing activities in order to maximize the Company's return on invested capital.

Future distributions by the Company will be subject to the requirements of the MGCL and the discretion of the Board of Directors of the Company, and will depend on the actual cash flow of the Company, its financial condition, its capital requirements, any decision by the Board of Directors to reinvest the Operating Partnership's Funds from Operations rather than distribute such funds to the Company, the annual distribution requirements under the REIT provisions of the Code (see "Federal Income Tax Considerations--Taxation of the Company--Annual Distribution Requirements") and such other factors as the Board of Directors deems relevant. There can be no assurance that any distributions will be made or that the expected level of distributions will be maintained by the Company. See "Risk Factors--Real Estate Investment Considerations" and "--Distribution Payout Percentage." If revenues generated by the Company's properties in future periods decrease materially from current levels, the Company's ability to make expected distributions would be materially adversely affected, which could result in a decrease in the market price of the shares of Common Stock.

56

The Company may in the future implement a distribution reinvestment program under which holders of shares of Common Stock may elect automatically to reinvest distributions in additional shares of Common Stock. The Company may, from time to time, repurchase shares of Common Stock in the open market for purposes of fulfilling its obligations under this distribution reinvestment program, if adopted, or may elect to issue additional shares of Common Stock. If the Company adopts a distribution reinvestment program, it will solicit participation in the program after the Offering by means of a separate prospectus, and a purchase of shares of Common Stock in the Offering does not entitle any investor to participate in any such program. There can be no assurance that the Company will adopt such a program, and consequently, the probable date of adoption or number of shares of Common Stock that would be available under such program cannot be determined at this time.

Cash available for distribution is based on Funds from Operations (which is defined by NAREIT as net income (loss) (computed in accordance with GAAP), excluding gains (or losses) from debt restructuring and sales of property, plus real estate related depreciation and amortization (excluding amortization of deferred financing costs)) and after adjustments for unconsolidated partnerships and joint ventures. The calculation of adjustments to pro forma Funds from Operations is being made solely for the purpose of setting the initial distribution amount and is not intended to be a projection or prediction of the Company's actual results of operations nor is the methodology upon which such adjustments are made intended to be a basis for determining future distributions. Management considers Funds from Operations an appropriate measure of performance of an equity REIT because industry analysts have accepted it as such. The Company computes Funds from Operations in accordance with standards established by the Board of Governors of NAREIT in its March 1995 White Paper, which may differ from the methodology for calculating Funds from Operations utilized by other equity REITs and, accordingly, may not be comparable to such other REITs. Further, Funds from Operations does not represent amounts available for management's discretionary use because of needed capital replacement or expansion, debt service obligations, or other commitments and uncertainties. See "Management's Discussion and Analysis of Financial Condition and Results of Operations-- Funds from Operations."

The Company intends to provide its stockholders with annual reports containing audited financial statements with a report thereon by the Company's independent auditors, together with management's discussion and analysis, as required under applicable Commission rules and regulations.

57

CAPITALIZATION

The following table sets forth the capitalization of the Company (based on the Combined Financial Statements of the Kilroy Group) as of September 30, 1996 on an historical basis, and on a pro forma basis as adjusted to give effect to the Formation Transactions, the Offering, the Financing and the application of the net proceeds therefrom as described under the caption "Use of Proceeds." The information set forth in the following table should be read in conjunction with the Combined Financial Statements of the Kilroy Group and notes thereto, the pro forma financial information of the Company and the notes thereto and "Management's Discussion and Analysis of Financial Condition and Results of Operations--Liquidity and Capital Resources" included elsewhere in this Prospectus.

                                                          SEPTEMBER 30, 1996
                                                        ------------------------
                                                        HISTORICAL    PRO FORMA
                                                        -----------   ----------
                                                        (DOLLARS IN THOUSANDS)
Debt:
  Mortgage Loans(1).................................... $   224,046   $   96,000
  Borrowings under Credit Facility(2)..................         --           --
                                                        -----------   ----------
Total debt.............................................     224,046       96,000
                                                        -----------   ----------
Minority interest in the Operating Partnership(3)......         --        19,319
                                                        -----------   ----------
Stockholders' equity (deficit):
  Preferred Stock, $.01 par value, 30,000,000 shares
   authorized, none issued or outstanding..............
  Common Stock, $.01 par value, 150,000,000 shares
   authorized, 11,360,000 shares issued and
   outstanding(3)(4)...................................         --           114
  Capital in excess of par value.......................         --        81,189
  Accumulated deficit..................................    (113,223)         --
                                                        -----------   ----------
Total stockholders' equity (deficit)...................    (113,223)      81,303
                                                        -----------   ----------
Total capitalization................................... $   110,823   $  196,622
                                                        ===========   ==========


(1) The Company, on behalf of the Operating Partnership, has obtained written commitments for the Mortgage Loans, the closing of which is a condition to the consummation of the Offering. See "The Financing--The Mortgage Loans."
(2) The Company, on behalf of the Operating Partnership, expects to obtain a written commitment to establish the $100.0 million Credit Facility, which the Company expects to enter into concurrently with the consummation of the Offering. See "The Financing--The Credit Facility."
(3) Assumes no exchange of the Units to be issued to the Continuing Investors in connection with the Formation Transactions. If all of the Units were exchanged, 14,052,374 shares of Common Stock would be outstanding.
(4) Excludes 1,400,000 shares of the 1,460,000 shares of Common Stock reserved for issuance pursuant to the Stock Incentive Plan. See "Management--Stock Incentive Plan." Includes 60,000 restricted shares of Common Stock to be issued to an officer of the Company who is not a Continuing Investor.

58

DILUTION

Purchasers of the Common Stock offered hereby will experience an immediate and substantial dilution of the net tangible book value of their Common Stock from the assumed initial public offering price. At September 30, 1996, the Company had a negative combined net tangible book value of approximately $113.2 million, or negative $42.05 per share of Common Stock (assuming the exchange of Units issued to Continuing Investors in connection with the Formation Transactions into shares of Common Stock on a one-for-one basis). After giving effect to the sale of the shares of Common Stock offered hereby at an assumed initial public offering price of $20.00 per share of Common Stock, the deduction of underwriting discounts and commissions and estimated Offering expenses and the receipt by the Company of approximately $206.6 million in net proceeds from the Offering, the pro forma net tangible book value at September 30, 1996 would have been $81.3 million, or $7.16 per share of Common Stock. This amount represents an immediate increase in net tangible book value of $49.21 per Unit to Continuing Investors and an immediate dilution in pro forma net tangible book value of $12.84 per share of Common Stock to new public investors. The following table illustrates this per share dilution:

Assumed initial public offering price per share............          $20.00
  Pro forma net tangible book value before the
   Offering(1)............................................. $(42.05)
  Increase in pro forma net tangible book value
   attributable to the Offering and Formation
   Transactions............................................   49.21
                                                            -------
Pro forma net tangible book value after the Offering(2)....            7.16
                                                                     ------
Dilution in pro forma net tangible book value to new
 investors(3)..............................................          $12.84
                                                                     ======


(1) Net tangible book value per share of Common Stock before the Offering is determined by dividing net tangible book value (total tangible assets less total liabilities) of the Company by the number of shares of Common Stock of the Company representing the exchange in full of the Units to be issued to the Continuing Investors.
(2) Based on pro forma net tangible book value of approximately $81.3 million divided by 11,360,000 shares of Common Stock outstanding. There is no impact on dilution attributable to the exchange of Units to be issued to the Continuing Investors due to the effect of minority interest.
(3) Dilution is determined by subtracting pro forma net tangible book value per share of Common Stock after giving effect to the Formation Transactions and the Offering from the assumed initial public offering price paid by a new investor for a share of Common Stock.

The following table sets forth, on a pro forma basis giving effect to the Offering and the Formation Transactions: (i) the number of shares of Common Stock to be sold by the Company in the Offering and the number of Units issued to the Continuing Investors in connection with the Formation Transactions;
(ii) the net tangible book value as of September 30, 1996 of the assets contributed to the Operating Partnership in the Formation Transactions; and
(iii) the net tangible book value of the average contribution per share/Unit based on total contributions. See "Risk Factors--Immediate and Substantial Dilution."

                             SHARES/UNITS    BOOK VALUE OR CASH
                             ISSUED(1)(2)      CONTRIBUTIONS            AVERAGE PRICE
                          ------------------ ------------------------        PER
                            NUMBER   PERCENT  AMOUNT        PERCENT      SHARE/UNIT
                          ---------- ------- ----------     ---------   -------------
                                            (IN THOUSANDS)
New investors(2)........  11,360,000   80.8% $  226,000 (3)    242.1 %     $ 20.00
Units issued to
 Continuing Investors in
 connection with the
 Formation
 Transactions...........   2,692,374   19.2%   (132,643)(4)   (142.1)%     $(49.27)
                          ----------  -----  ----------     --------
    Total...............  14,052,374  100.0% $   93,357        100.0 %
                          ==========  =====  ==========     ========


(1) Reflects the shares of Common Stock offered hereby and the Units to be issued to the Continuing Investors in exchange for assets contributed in connection with the Formation Transactions at the initial exchange ratio of one share of Common Stock for each Unit. There are, however, certain restrictions on the exchange of Units. See "Partnership Agreement of the Operating Partnership--Redemption/Exchange Rights."

(2) Includes 60,000 restricted shares of Common Stock that will be purchased by an officer of the Company, who is not a Continuing Investor, for $.01 per share ($600 in the aggregate) in connection with a grant pursuant to the Company's Stock Incentive Plan.
(3) This amount is based on the assumed initial public offering price of $20.00.

(4) Based on the September 30, 1996 pro forma book value of the assets to be contributed to the Operating Partnership in connection with the Formation Transactions less $19.42 million attributable to underwriting discounts and commissions and estimated expenses of the Offering.

59

SELECTED FINANCIAL DATA

The following table sets forth certain financial data on a pro forma basis for the Company, and on an historical basis for the Kilroy Group, which consist of the Combined Financial Statements of the Kilroy Group whose financial results will be consolidated in the historical and pro forma financial statements of the Company. The financial data should be read in conjunction with the historical and pro forma financial statements and notes thereto included in this Prospectus. The combined historical summary financial data as of December 31, 1994, 1995 and September 30, 1996 and for each of the three years in the period ended December 31, 1995 and the nine months ended September 30, 1995 and 1996 have been derived from the Combined Financial Statements of the Kilroy Group audited by Deloitte & Touche LLP, independent public accountants, whose report with respect thereto is included elsewhere in this Prospectus. The selected combined historical financial and operating information as of December 31, 1993, 1992 and 1991 and for the years ended December 31, 1992 and 1991 have been derived from the unaudited Combined Financial Statements of the Kilroy Group and, in the opinion of management, include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the operating information for the unaudited periods. The pro forma data assume the completion of the Formation Transactions, including acquisition of the Acquisition Properties and the consummation of the Offering (based upon the midpoint of the range of the initial public offering price set forth on the cover page of this Prospectus) and the Financing and use of the aggregate net proceeds therefrom as described under "Use of Proceeds" as of the beginning of the periods presented for the operating data and as of the balance sheet date for the balance sheet data. The pro forma financial data do not give effect to the recent extension of the tenant lease with Hughes Space & Communications with respect to space leased in the Office Property located at 2250 E. Imperial Highway, El Segundo, California and a portion of the space leased in the Office Property located at 2240 E. Imperial Highway, El Segundo, California. The pro forma financial data are not necessarily indicative of what the actual financial position or results of operations of the Company would have been as of and for the periods indicated, nor does it purport to represent the future financial position and results of operations.

60

THE COMPANY (PRO FORMA) AND KILROY GROUP (HISTORICAL)
(IN THOUSANDS, EXCEPT PER SHARE DATA)

                               NINE MONTHS ENDED
                                 SEPTEMBER 30,                              YEAR ENDED DECEMBER 31,
                         --------------------------------  --------------------------------------------------------------
                                    COMBINED HISTORICAL                            COMBINED HISTORICAL
                         PRO FORMA  ---------------------  PRO FORMA ----------------------------------------------------
                           1996        1996        1995      1995      1995       1994       1993       1992       1991
                         ---------  ------------ --------  --------- ---------  ---------  ---------  ---------  --------
STATEMENT OF OPERATIONS
 DATA:
 Rental income.......... $ 30,635   $   25,156   $ 24,056   $39,141  $  32,314  $  31,220  $  34,239  $  32,988  $ 29,300
 Tenant reimbursements..    3,326        2,583      2,377     3,886      3,002      1,643      4,916      5,076     5,416
 Parking income.........    1,317        1,317      1,193     1,582      1,582      1,357      1,360      1,286     1,358
 Development and
  management fees.......      --           580        926       --       1,156        919        751        882       779
 Sale of air rights.....      --           --       4,456     4,456      4,456        --         --         --        --
 Lease termination
  fees..................      --           --         --        100        100        300      5,190         48       --
 Other income...........      364           65        211       705        298        784        188        221       206
                         --------   ----------   --------   -------  ---------  ---------  ---------  ---------  --------
 Total revenues.........   35,642       29,701     33,219    49,870     42,908     36,223     46,644     40,501    37,059
                         --------   ----------   --------   -------  ---------  ---------  ---------  ---------  --------
 Property expenses......    6,411        5,042      5,045     8,668      6,834      6,000      6,391      6,384     6,971
 Real estate taxes
  (refunds).............    1,457          970      1,088     2,002      1,416       (448)     2,984      3,781     2,377
 General and
  administrative
  expense...............    3,062        1,607      1,554     4,083      2,152      2,467      1,113      1,115       841
 Ground lease...........      832          579        542     1,127        789        913        941        854       726
 Development expenses...      --           584        564       --         737        468        581        429       255
 Option buy-out cost....    3,150        3,150        --        --         --         --         --         --        --
 Interest expense.......    5,937       16,234     18,660     7,916     24,159     25,376     25,805     26,293    26,174
 Depreciation and
  amortization..........    7,668        6,838      7,171    10,580      9,474      9,962     10,905     10,325     9,116
                         --------   ----------   --------   -------  ---------  ---------  ---------  ---------  --------
 Total expenses.........   28,517       35,004     34,624    34,376     45,561     44,738     48,720     49,181    46,460
                         --------   ----------   --------   -------  ---------  ---------  ---------  ---------  --------
 Income (loss) before
  equity in income of
  subsidiary, minority
  interest and
  extraordinary item....    7,125       (5,303)    (1,405)   15,494     (2,653)    (8,515)    (2,076)    (8,680)   (9,401)
 Equity in income (loss)
  of subsidiary.........      (58)                    --        136        --         --         --         --        --
 Minority interest......   (1,357)                    --     (3,001)       --         --         --         --        --
 Extinguishment of
  debt..................      --        20,095     15,267       --      15,267      1,847        --         --        --
                         --------   ----------   --------   -------  ---------  ---------  ---------  ---------  --------
 Net income (loss)...... $  5,710   $   14,792   $ 13,862   $12,629  $  12,614  $  (6,668) $  (2,076) $  (8,680) $ (9,401)
                         ========   ==========   ========   =======  =========  =========  =========  =========  ========
 Pro forma net income
  per share(1).......... $   0.50                           $  1.11
                         ========                           =======
                                                                                       DECEMBER 31,
                                                                     ----------------------------------------------------
                          SEPTEMBER 30, 1996                                       COMBINED HISTORICAL
                         -----------------------                     ----------------------------------------------------
                                     COMBINED
                         PRO FORMA  HISTORICAL                         1995       1994       1993       1992       1991
                         ---------  ------------                     ---------  ---------  ---------  ---------  --------
BALANCE SHEET DATA:
 Real estate assets,
  before accumu-
  lated depreciation and
  amortization.......... $285,150   $  227,127                       $ 224,983  $ 223,821  $ 222,056  $ 221,423  $220,363
 Total assets...........  210,603      131,062                         132,857    143,251    148,386    161,008   169,147
 Mortgages and loans....   96,000      224,046                         233,857    250,059    248,043    250,792   245,645
 Total liabilities......  109,981      244,285                         254,683    273,585    263,346    263,156   254,786
 Minority interest......   19,319
 Stockholders' equity
  (deficit).............   81,303     (113,223)                       (121,826)  (130,334)  (114,960)  (102,148)  (85,639)

                           NINE MONTHS ENDED SEPTEMBER 30,             YEAR ENDED DECEMBER 31,
                          -----------------------------------  ------------------------------------------
                                        COMBINED HISTORICAL                    COMBINED HISTORICAL
                          PRO  FORMA   ----------------------  PRO FORMA  -------------------------------
                             1996         1996        1995       1995       1995       1994       1993
                          -----------------------  ----------  ---------  ---------  ---------  ---------
OTHER DATA:
 Funds from
  Operations(2).........     $18,243       $4,685      $1,310    $22,018     $2,365     $1,447     $3,639
 Cash flows from:
 Operating activities...         --         5,528       9,270        --      10,071      6,607     11,457
 Investing activities...         --        (2,140)       (446)       --      (1,162)    (1,765)     2,028
 Financing activities...         --        (3,388)     (8,824)       --      (8,909)    (4,842)   (13,485)
 Office Properties:
 Square footage.........   2,037,414    1,688,383   1,688,383  2,037,414  1,688,383  1,688,383  1,688,383
 Occupancy..............        79.8%        76.3%       72.8%      77.0%      72.8%      73.3%      81.0%
 Industrial Properties:
 Square footage.........   1,337,697      916,570     916,570  1,337,697    916,570    916,570    916,570
 Occupancy..............        93.7%        90.8%       98.4%      92.2%      98.4%      79.7%      77.6%


(1) Pro forma net income per share equals pro forma net income divided by the 11,360,000 shares of Common Stock outstanding after the Offering.
(2) As defined by the National Association of Real Estate Investment Trusts ("NAREIT"), Funds from Operations represents net income (loss) before minority interest of unit holders (computed in accordance with GAAP), excluding gains (or losses) from debt restructuring and sales of property, plus real estate related depreciation and amortization (excluding amortization of deferred financing costs) and after adjustments for unconsolidated partnerships and joint ventures. Non- cash adjustments to Funds from Operations were as follows: in all periods, depreciation and amortization; in 1996, 1995 and 1994, gains on extinguishment of debt; and in pro forma 1996 and 1995, non-cash compensation. Further, in 1996 and 1995 non-recurring items (sale of air rights and option buy-out cost) were excluded. Management considers Funds from Operations an appropriate measure of performance of an equity REIT because industry analysts have accepted it as such. The Company computes Funds from Operations in accordance with standards established by the Board of Governors of NAREIT in its March 1995 White Paper, which may differ from the methodology for calculating Funds from Operations utilized by other equity REITs and, accordingly, may not be comparable to such other REITs. Further, Funds from Operations does not represent amounts available for management's discretionary use because of needed capital replacement or expansion, debt service obligations, or other commitments and uncertainties. See notes
(9), (10) and (11) under the caption "Distribution Policy" and the notes to the historical financial statements of the Kilroy Group. Funds from Operations should not be considered as an alternative for net income as a measure of profitability nor is it comparable to cash flows provided by operating activities determined in accordance with GAAP.

61

MANAGEMENT'S DISCUSSION AND ANALYSIS OF
FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion should be read in conjunction with the "Selected Financial Data" and the Combined Financial Statements for the Kilroy Group and notes thereto appearing elsewhere in this Prospectus. The Combined Financial Statements of the Kilroy Group are comprised of the operations, assets and liabilities of the Properties other than the Acquisition Properties. As part of the Formation Transactions, the Properties will be contributed to the Operating Partnership, of which the Company will be the sole general partner and the beneficial owner of an approximately 80.8% interest. As a result, for accounting purposes, the financial information of the Operating Partnership and the Company will be consolidated.

RESULTS OF OPERATIONS

Nine Months Ended September 30, 1996 Compared to Nine Months Ended September 30, 1995

Total revenues decreased $3.5 million, or 10.6%, for the nine months ended September 30, 1996 compared to the same period for 1995. Revenues from base rents increased $1.1 million, or 4.6%, to $25.2 million in the 1996 period compared to $24.1 million in the 1995 period. Rents from Office Properties increased $0.8 million during the nine months ended September 30, 1996 from the comparable period in 1995. Such increase was due to office space under lease increasing from 1,229,000 square feet at September 30, 1995 to 1,288,000 square feet at September 30, 1996. The majority of this increase relates to leasing at Kilroy Airport Center Long Beach. There was no significant change in rent per square foot during the 1996 period compared to the 1995 period. Rents from Industrial Properties increased a net $0.3 million during the nine months ended September 30, 1996 compared to the same period in 1995. The net increase was due to a lease with a Consumer Price Index ("CPI") increase and the effect of the 2260 E. El Segundo Boulevard Building being leased for the entire nine months ended September 30, 1996. Tenant reimbursements and parking revenues increased to $2.6 million and $1.3 million, respectively, in the 1996 period compared to $2.4 million and $1.2 million for the same period in 1995. The overall $0.3 million increase is primarily due to increased billable operating expenses resulting from new leases and parking income. Revenues for 1995 include a gain on the sale of air rights of $4.5 million at Kilroy Airport Center at El Segundo. See Note 2 to the Combined Financial Statements.

Expenses in the nine months ended September 30, 1996 increased by $0.4 million, or 1.1%, to $35.0 million compared to $34.6 million in the 1995 period. During the nine months ended September 30, 1996, the Company accrued the costs of an option buy-out of $3.15 million for the cancellation of an option to purchase a 50% equity interest in Kilroy Airport Center at El Segundo. Interest expense decreased $2.5 million, or 13.4%, to $16.2 million in 1996 from $18.7 million in 1995, primarily as a result of the forgiveness and restructuring of certain debt in 1995 and 1996 (see Note 4 to the Combined Financial Statements).

Net income was $14.8 million for the nine months ended September 30, 1996 compared to $13.9 million for the same period in 1995. The increase of $0.9 million is due primarily to a decrease in interest expense of $2.5 million, an increase in extraordinary gains of $4.8 million less the nonrecurring option buy-out cost of $3.15 million for the 1996 period and the sale of air rights of $4.5 million in 1995.

Year Ended December 31, 1995 Compared to Year Ended December 31, 1994

Total revenues increased $6.7 million, or 18.5%, for the year ended December 31, 1995 compared to the year ended December 31, 1994. Revenues from base rents increased $1.1 million, or 3.5%, to $32.3 million in 1995 from $31.2 million in 1994. In 1995, rents from Industrial Properties increased $0.8 million from the year ended December 31, 1994, primarily due to the effect of 12-months' rental for the Property located at 2265 E. El Segundo Boulevard compared to four-months' rental in 1994. Office square footage and average rent per net rentable square foot remained relatively unchanged for the year ended December 31, 1995 compared to the year ended December 31, 1994. Industrial square footage under lease increased to 902,000 at December 31, 1995 as compared to 730,000 a year earlier. The 2260 E. El Segundo Boulevard building was leased in April 1995 after being vacant during 1994. The Company also leased the 1230 S. Lewis St. property in February 1995

62

at a rate of $6.11 per net rentable square foot, down from the rate of $6.43 in effect for the prior year. Tenant reimbursements increased to $3.0 million in 1995 from $1.6 million in 1994 due principally to the 1994 $1.5 million refund to tenants for property tax refunds. Parking revenues increased to $1.6 million in 1995 from $1.4 million in 1994 due to recognition of 12- months' parking income for Kilroy Airport Center Long Beach in 1995 compared to two months in 1994, together with increased tenant parking revenues at Kilroy Airport Center at El Segundo. Revenues for 1995 include a gain on the sale of air rights of $4.5 million referred to above. Other income decreased $0.5 million to $0.3 million during 1995 compared to 1994, primarily as a result of nonrecurring interest income of $0.4 million on the property tax refunds referred to below.

Expenses in 1995 increased $0.8 million, or 1.8%, to $45.6 million. Property operating expenses increased $0.8 million, or 13.9%, primarily due to increased utility costs, increases in employee wages and benefits and a $0.3 million management fee paid to KI to cover costs of the loan renegotiation at Kilroy Airport Center at El Segundo. Real estate taxes increased $1.9 million, to $1.4 million in 1995 from a credit balance of $0.4 million in 1994, primarily due to the $2.4 million property tax refund recorded by the Company in 1994 and the effect of a reduction in aggregate assessed property values in 1995. General and administrative expenses decreased $0.3 million, or 12.0%, to $2.2 million in 1995 from $2.5 million in the 1994 period, primarily due to a $0.3 million penalty for late payment of property taxes in 1994. Interest expense decreased $1.2 million to $24.2 million in 1995 from $25.4 million in 1994 due to the September 1995 extension of the mortgage on Kilroy Airport Center at El Segundo at a lower interest rate and the forgiveness of certain debt, offset in part by the effect of higher interest rates on the variable rate mortgage secured by Kilroy Airport Center Long Beach. See Note 4 to the Combined Financial Statements. Ground lease expense decreased $0.1 million to $0.8 million in 1995, reflecting the effect of 12 months' reduction of ground rent for Phase III of Kilroy Airport Center Long Beach compared to six months in 1994. The $0.5 million decrease in depreciation and amortization to $9.5 million in 1995 results from certain assets becoming fully amortized.

Net income increased $19.3 million to $12.6 million in 1995 compared to a net loss of $6.7 million in 1994, primarily due to the sale of air rights discussed above and a $13.4 million increase in gains on extinguishment of debt to $15.3 million in 1995 compared to $1.8 million in 1994.

Year Ended December 31, 1994 Compared to Year Ended December 31, 1993

Total revenues decreased $10.4 million, or 22.3%, for the year ended December 31, 1994 compared to the year ended December 31, 1993. The primary reason for the decrease in revenue was the receipt of lease termination fees in 1993 of $5.2 million, of which $5.0 million related to a lease termination at the SeaTac Office Center and $0.2 million to the Kilroy Airport Center Long Beach. Revenues from base rents decreased $3.0 million, or 8.8%, to $31.2 million for the year ended December 31, 1994 compared to $34.2 million for the year ended December 31, 1993, due to the lease termination at the SeaTac Office Center referred to above (with $2.0 million in rental revenue in 1993), a lease renegotiation resulting in a lower rent rate effective June 1, 1994 for a lease on office space in the parking structure at Kilroy Airport Center at El Segundo, partially offset by continuing leasing activity at Kilroy Airport Center Long Beach. Office square footage under lease decreased to 1,239,000 at December 31, 1994 from 1,360,000 at December 31, 1993. The decrease is due primarily to the termination of the lease at the SeaTac Office Center (211,000 square feet) offset by 30,000 square feet of new leases elsewhere in the project and a 55,000 increase in square footage leased at Kilroy Airport Center Long Beach. Average office rent per square foot declined $2.33 per square foot in 1994 from 1993 due to the lease renegotiation referred to above and a softness in the Southern California rental market in 1994. Industrial rents decreased $0.2 million in 1994 primarily due to an extension of a lease at a reduced rate.

Tenant reimbursements decreased to $1.6 million in 1994 from $4.9 million in 1993, due to a $1.5 million refund to tenants in 1994 for property tax refunds (for the tax years 1990 through 1994) and an approximate $1.5 million decrease due to the termination of the SeaTac Office Center lease referred to above. Tenant reimbursements consist of additional rental revenue from tenants covering operating expenses, such as utilities and property taxes, and are recorded as revenue in accordance with the lease terms. Other income increased $0.6 million, to $0.8 million in 1994 from $0.2 million in 1993, primarily as a result of interest income of $0.4 million on the property tax refunds referred to above.

63

Expenses in 1994 decreased $4.0 million, or 8.2%, to $44.7 million compared to $48.7 million in 1993. Property expenses decreased $0.4 million, or 6.1%, due to the vacancy at SeaTac Office Center referred to above and the related reduction in expenses. Real estate taxes decreased $3.4 million to a credit balance of $0.4 million in 1994 from taxes of $3.0 million in 1993, primarily due to property tax refunds of $2.4 million (for the tax years 1990 through 1994) recorded by the Company in 1994 together with an approximate $1.0 million decrease resulting from a reduction in aggregate assessed value of the Properties during the year ended December 31, 1994. General and administrative expenses increased $1.4 million, to $2.5 million in 1994 from $1.1 million in 1993, principally due to a $0.6 million increase in the allowance for uncollectible rent attributable to a single tenant, a $0.3 million penalty in 1994 for late payment of property taxes and $0.2 million of expenses relating to a financing arrangement which was not consummated. Interest expense decreased $0.4 million, to $25.4 million in 1994 due to a decrease in the interest rate on the variable rate mortgage secured by Kilroy Airport Center Long Beach. Depreciation and amortization decreased $0.9 million to $10.0 million in 1994 as a result of certain assets becoming fully amortized.

The net loss increased $4.6 million to $6.7 million in 1994 compared to a net loss of $2.1 million in 1993, due to lease termination fees of $5.2 million received in 1993 and the net effect of the items discussed above.

DEVELOPMENT AND MANAGEMENT FEES

The Kilroy Group's third-party development activities are summarized below:

                                               NINE MONTHS
                                                  ENDED         YEAR ENDED
                                              SEPTEMBER 30,    DECEMBER 31,
                                              -------------- ----------------
                                               1996    1995   1995  1994 1993
                                              ------  ------ ------ ---- ----
                                                      (IN THOUSANDS)
Revenues.....................................   $580    $926 $1,156 $919 $751
Expenses.....................................    584     564    737  468  581
                                              ------  ------ ------ ---- ----
Excess of revenues over expenses............. $   (4)   $362 $  419 $451 $170
                                              ======  ====== ====== ==== ====

Subsequent to the Formation Transactions, the Company's and the Kilroy Group's development activities will be conducted through Kilroy Services, Inc., See "Formation and Structure of the Company--Formation Transactions" and "Formation of Kilroy Services, Inc."

The increases in revenues in 1994, as compared with 1993, and in 1995, as compared with 1994, was a result of the commencement of development services for the Riverside Judicial Center (commencing in 1994) and the Northrop Grumman Corporation's property located in Pico Rivera, California (the agreement for which commenced in 1995 and expires in February 1997). The $0.3 million decrease in revenues during the nine months ended September 30, 1996 compared with the same period in 1995 was primarily the result of a decrease in development services at the Calabasas Park Centre which was acquired by the stockholders of KI in 1996. Revenues from Calabasas Park Centre were $0.1 million, $0.4 million, $0.5 million, $0.7 million and $0.7 million for the nine months ended September 30, 1996 and 1995 and the years ended December 31, 1995, 1994 and 1993, respectively. The remainder of the decrease was due to the substantial completion of development services for the Riverside Judicial Center. A portion of the related expenses of development and management services are fixed in nature and have not fluctuated significantly, while the majority of the related expenses are variable in nature and fluctuate with the level of development and management activities. With the acquisition of Calabasas Park Centre by the Kilroy Group in 1996, and completion of the fee activities pursuant to the agreement with Northrop Grumman in February 1997, the Company does not expect significant fee activity from these sources.

ADOPTION OF SFAS NO. 121

During 1995, the Company adopted Statement of Financial Accounting Standards ("SFAS") No. 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed of." No impairments have been determined and, therefore, no real estate carrying amounts have been adjusted.

64

LIQUIDITY AND CAPITAL RESOURCES

Upon the consummation of the Offering and the Formation Transactions and the use of proceeds therefrom, the Company will have (i) acquired the Acquisition Properties, (ii) reduced its total indebtedness by approximately $128.0 million and (iii) established working capital cash reserves of approximately $20.0 million and capital expenditure cash reserves of approximately $2.3 million. The Company is currently negotiating a $100.0 million Credit Facility, which the Company expects to enter into shortly after consummation of the Offering. The Credit Facility is expected to be used primarily to finance acquisitions of additional properties. The availability of funds under the Credit Facility is expected to be subject to, among other things, the value of the underlying collateral securing it. The Company expects that, initially, it will have approximately $50.0 million in availability under the Credit Facility. In connection with certain leases signed after September 30, 1996, the Company is obligated to fund approximately $2.0 million in tenant improvements and leasing commissions. This obligation will be assumed by the principals of KI. The Company presently expects to finance development activities from working capital and from funds from operations. See "The Financing--The Credit Facility." In addition, if the Offering is consummated on or before June 30, 1997, the Company will pay to Richard E. Moran Jr., the Company's Executive Vice President, Chief Financial Officer and Secretary, a bonus of $200,000, pursuant to the terms of his employment agreement. This obligation also will be assumed by the principals of KI. See "Management-- Executive Compensation."

The Company anticipates that distributions will be paid from cash available for distribution, which is expected to exceed cash historically available for distribution as a result of the reduction in debt service anticipated to result from the repayment of indebtedness. The Company presently intends to make distributions quarterly, subject to the discretion of the Board of Directors. Amounts accumulated for distribution will be invested by the Company primarily in interest-bearing accounts and short-term, interest- bearing securities, which are consistent with the Company's intention to qualify for taxation as a REIT. Such investments may include, for example, obligations of the Government National Mortgage Association, other governmental agency securities, certificates of deposit and interest-bearing bank deposits.

The Company believes the Offering and the Formation Transactions will improve its financial performance through changes to its capital structure, principally the substantial reduction in its overall debt and its debt to equity ratio. Through the Formation Transactions, the Company will repay all of its existing mortgage debt of $224.0 million secured by the Properties (other than the Acquisition Properties) and will have debt outstanding of $96.0 million comprised of the $84.0 Million Loan and the $12.0 million SeaTac Loan. The $84.0 Million Loan will bear interest at 8.2%, amortize over 25 years and mature in 2005. The SeaTac Loan will bear interest at a variable rate and mature in July 1997. Thus, total secured debt after the Formation Transactions (assuming no advances under the Credit Facility) will be reduced by approximately $128.0 million. This will result in a significant reduction in annual mortgage interest expense as a percentage of total revenue (15.9% on a pro forma basis as compared to 56.3% for the historical year ended December 31, 1995). Cash from operations required to fund interest expense will decrease substantially, although this reduction will be offset by the use of cash from operations to meet annual REIT distribution requirements. The market capitalization of the Company, based on the assumed initial public offering price of $20.00 per share and the debt outstanding at the completion of the Offering, is expected to be approximately $377.0 million with total debt of approximately $96.0 million. As a result, the Company's debt to total market capitalization ratio will be approximately 25.5%.

The Company was adversely impacted in 1993 and 1994 by the decline in market rental rates, higher vacancies and its higher leverage which prevented it from meeting certain of its financial obligations. Bank notes relating to properties other than the SeaTac Office Center aggregating $9.7 million and $23.7 million were in default as of December 31, 1995 and 1994, respectively. Past due interest relating to the notes was $2.9 million and $5.7 million as of December 31, 1995 and 1994, respectively. In addition, property taxes of $0.2 million, $0.5 million and $0.6 million were past due as of September 30, 1996, and December 31, 1995 and 1994, respectively. In June 1996, the Company repaid the principal of the bank notes relating to such properties, and the applicable accrued interest, and all but $40,000 of the property taxes, with the proceeds of a financing secured by certain of the Industrial Properties. With respect to the SeaTac Office Center, a high vacancy rate in 1993 resulted in insufficient cash flow to service the underlying debt on this property. The high vacancy rate has

65

continued and a note payable to an insurance company having a principal balance of $20.2 million and accrued interest of $1.9 million, as of September 30, 1996, has been in default since October 1995. In October 1996, the Company successfully negotiated a discounted payoff with the lender and the ground lessor which provides for a payoff or purchase of the lender's note at a discount on or before February 10, 1997. The Company believes it will be able to meet this commitment irrespective of the consummation of the Offering based upon discussions with other sources of financing. Bank notes relating to the SeaTac Office Center aggregating $6.8 million were in default as of December 31, 1995 and 1994. Past due interest relating to these notes was $2.1 million and $1.4 million as of December 31, 1995 and 1994, respectively. In June 1996, the Company repaid the principal of the bank notes and the applicable accrued interest relating to the SeaTac Office Center with the proceeds of a financing secured by certain of the Industrial Properties.

The Company expects to meet its short-term liquidity requirements generally through its initial working capital, net cash provided by operations and additional debt or equity financings. The Company estimates that for the 12 months ending September 30, 1997 it will incur approximately $1.1 million of expenses attributable to non-incremental revenue generating tenant improvements and leasing commissions and $310,000 of capital expenditures not reimbursed by tenants. The Company expects that it will incur tenant improvement and leasing commission costs in connection with the leasing-up of available space at the SeaTac Office Center. Based upon current market conditions, the Company expects such tenant improvement and leasing commission costs to equal approximately $ per net rentable square foot. As of December 31, 1996, approximately 330,000 net rentable square feet were available for lease at the SeaTac Office Center. In addition, the Company will set aside approximately $2.3 million of the net proceeds of the Offering for certain nonrecurring capital expenditures. See "Distribution Policy." From such $2.3 million capital expenditure cash reserves, the Company will pay to Hughes Space & Communications, in connection with Formation Transactions, the remaining balance of approximately $1.4 million in connection with the amendment and/or extension of leases of office space at the Office Properties located at Kilroy Airport Center, including $500,000 in connection with a tenant improvement allowance for the properties located at 2240 and 2250 E. Imperial Highway and the balance in connection with the cancellation of an option to purchase an equity interest in the Office Properties located at Kilroy Airport Center at El Segundo. In November 1996, $2.26 million of the option buy-out liability was paid by KI and its stockholders. Also from such $2.3 million capital expenditure cash reserves, in connection with the Financing, the Company will make earthquake-related improvements to certain of the Properties in an aggregate amount of approximately $500,000. The Company presently has no financial commitments in its capacity as a developer of real estate projects and believes that it will have sufficient capital resources to satisfy its obligations during the 12-month period following completion of the Offering, and that its net cash provided by operations will be adequate to meet both operating requirements and expected distributions by the Company in accordance with REIT requirements.

The Company expects to meet certain of its long-term liquidity requirements, including the repayment of long-term debt of $84.0 million (less scheduled principal repayments) in 2005, the repayment of debt of $12.0 million in July 1997 and possible property acquisitions and development, through long-term secured and unsecured borrowings, including the Credit Facility, and the issuance of debt securities or additional equity securities of the Company or, possibly in connection with acquisitions of land or improved properties, the issuance of Units of the Operating Partnership.

The Phase I environmental assessments of the Properties have not revealed any environmental liability that the Company believes would have a material adverse effect on the Company's financial condition or results of operations taken as a whole, nor is the Company aware of any such material environmental liability. See "Risk Factors--Government Regulations--Environmental Matters" and "Business and Properties--Government Regulations--Environmental Matters."

HISTORICAL CASH FLOWS

Historically, the Kilroy Group's principal sources of funding for operations and capital expenditures were cash flow from operating activities and secured debt financings. The Kilroy Group incurred net losses before extraordinary items in each of the last five years and for the nine-month period ended September 30, 1996.

66

However, after adding back depreciation and amortization, the Properties have generated positive net operating cash flows for the last four years.

The Company's net cash provided by operating activities decreased to $6.6 million for the year ended December 31, 1994 from $11.5 million for the same period in 1993 primarily as a result of lease termination fees of $5.2 received in 1993. The Company's net cash from operating activities increased $3.5 million from the year ended December 31, 1994 compared to the same period in 1995, or from $6.6 million in 1994 to $10.1 million in 1995. The increase was primarily due to the sale of air rights in 1995 of $4.5 million. The Company's net cash from operating activities decreased $3.8 million to $5.5 million during the nine months ended September 30, 1996 compared with $9.3 million in the comparable 1995 period. The decrease was a result of the sale of air rights of $4.5 million in 1995, the option buy-out cost of $3.15 million in 1996, offset by an increase in total rent of $1.3 million in 1996 and a decrease in interest expense of $2.5 million in 1996.

Net cash received from investing activities of $2.0 million for the year ended December 31, 1993 decreased to net cash used in investing activities of $1.8 million for the same period in 1994 due to the receipt in the 1993 period of a $2.7 million reimbursement of tenant improvements. Net cash used in investing activities decreased $0.6 million to $1.2 million for the year ended December 31, 1995 from $1.8 million for 1994 due to a decrease in the number of new lease transactions and the resulting decrease in the level of tenant improvements. Net cash used in investing activities increased $1.7 million to $2.1 million in the nine months ended September 30, 1996 from $0.4 million in the 1995 period primarily due to an increase in the number of new lease transactions and the resulting increase in the level of tenant improvements.

The Company's cash flows used in financing activities decreased $8.7 million to $4.8 million from $13.5 million for the year ended December 31, 1993 as a result of net borrowings of $3.9 million during the year ended December 31, 1994 compared to a net repayment of $2.7 million of debt in the 1993 period, together with an decrease in deemed distributions to partners to $8.7 million during the year ended December 31, 1994 compared to $10.7 million in the 1993 period. Cash flows used in financing activities increased $4.1 million to $8.9 million for the year ended December 31, 1995 compared to net cash used in financing activities of $4.8 million for the same period in 1994 as result of net repayments of debt in the 1995 period compared to net borrowings in the 1994 period and a $4.6 million decrease in deemed distributions to partners. Cash flows used in financing activities was $3.4 million for the nine months ended September 30, 1996 consisting of net proceeds from issuance of debt of $2.8 million, less $6.2 million in distributions to partners.

FUNDS FROM OPERATIONS

Industry analysts generally consider Funds from Operations, as defined by NAREIT, an alternative measure of performance of an equity REIT. Funds from Operations is defined by NAREIT to mean net income (loss) determined in accordance with GAAP, excluding gains (or losses) from debt restructuring and sales of property, plus depreciation and amortization (other than amortization of deferred financing costs and depreciation of non-real estate assets), and after adjustment for unconsolidated partnerships and joint ventures. The Company believes that in order to facilitate a clear understanding of the combined historical operating results of the Company, Funds from Operations should be examined in conjunction with net income (loss) as presented in the audited Combined Financial Statements and selected financial data included elsewhere in this Prospectus. The Company computes Funds from Operations in accordance with standards established by the Board of Governors of NAREIT in its March 1995 White Paper, which may differ from the methodology for calculating Funds from Operations utilized by other equity REITs and, accordingly, may not be comparable to such other REITs. Funds from Operations should not be considered as an alternative to net income (loss), as an indication of the Company's performance or to cash flows as a measure of liquidity or the ability to pay dividends or make distributions.

INFLATION

The Company's leases with the majority of its tenants require the tenants to pay most operating expenses, including real estate taxes and insurance, and increases in common area maintenance expenses, which reduce the Company's exposure to increases in costs and operating expenses resulting from inflation.

67

BUSINESS AND PROPERTIES

GENERAL

Upon the consummation of the Offering and the Formation Transactions, the Company (through the Operating Partnership) will own 14 Office Properties encompassing an aggregate of approximately 2.0 million rentable square feet and 12 Industrial Properties encompassing an aggregate of approximately 1.3 million rentable square feet. Eleven of the 14 of the Office Properties as well as 11 of the 12 Industrial Properties are located in prime Southern California suburban submarkets (including a complex of three Office Properties located adjacent to the Los Angeles International Airport, presently the nation's second largest air cargo port, and a complex of five Office Properties located adjacent to the Long Beach Municipal Airport). The Company also will own three Office Properties located adjacent to the Seattle-Tacoma International Airport in the State of Washington, and one Industrial Property located in Phoenix, Arizona. As of September 30, 1996, the Office Properties were approximately 79.8% leased to 130 tenants and the Industrial Properties were approximately 93.7% leased to 20 tenants. The Company has developed, managed and leased all but two of the 14 Office Properties and all but five of the 12 Industrial Properties. The Company believes that all of its Properties are well-maintained and, based on recent engineering reports, do not require significant capital improvements.

In addition to the Office and Industrial Properties, the Company has development rights with respect to approximately 24 acres of developable land (net of acreage required for streets), located in Southern California. See "-- Development, Leasing and Management Activities." Upon consummation of the Offering, the Company also will have the option to purchase three office properties and 18 acres of undeveloped land currently beneficially owned and controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr. which will not be contributed to the Operating Partnership immediately upon consummation of the Offering. The Company will have the right to acquire the option properties under the terms and conditions described below. All of these properties will be managed by the Company. See "--Excluded Properties."

In general, the Office Properties are leased to tenants on a full service basis, with the landlord obligated to pay the tenant's proportionate share of taxes, insurance and operating expenses up to the amount incurred during the tenant's first year of occupancy ("Base Year") or a negotiated amount approximating the tenant's pro rata share of real estate taxes, insurance and operating expenses ("Expense Stop"). The tenant pays its pro rata share of increases in expenses above the Base Year or Expense Stop. All leases for the Industrial Properties are written on a triple net basis, with tenants paying their proportionate share of real estate taxes, operating costs and utility costs.

68

The following table sets forth certain information (on a per net rentable square foot basis) regarding leasing activity at the Office Properties managed by the Company (i.e., all of the Office Properties other than the Thousand Oaks Office Property and the La Palma Business Center Office Property which are being acquired concurrently upon consummation of the Offering) since January 1, 1992 (based upon an average of all lease transactions during the respective periods):

OFFICE PROPERTIES

                              YEAR ENDED DECEMBER 31,             NINE-MONTH
                          ----------------------------------     PERIOD ENDED
                           1992     1993     1994     1995    SEPTEMBER 30, 1996
                          -------  -------  -------  -------  ------------------
Number of lease
 transactions during
 period(1)..............       27       19       36       27            31
Rentable square feet
 during period(1).......  221,946  127,126  354,018  105,544       341,940
Base rent ($)(1)(2).....    21.41    19.32    18.89    19.31         19.52
Tenant improvements
 ($)(3).................     9.04     6.82    15.01     7.30          8.99
Leasing commissions
 ($)(4).................     1.37     2.18     2.66     3.03          2.87
Other concessions
 ($)(5).................      --       --       --       --            --
Effective rent ($)(6)...    18.65    17.72    16.97    17.30         17.73
Expense Stop ($)(7).....     6.05     6.15     6.77     6.77          6.70
Effective equivalent
 triple net rent
 ($)(8).................    12.43    11.57    10.20    10.53         11.03
Occupancy rate at end of
 period (%).............     74.8%    76.1%    75.8%    75.6%         78.7%
- --------
(1) Includes only office tenants with lease terms of 12 months or longer.
    Excludes leases for amenity, parking, retail and month-to-month office
    tenants.
(2) Equals aggregate base rent received over their respective terms from all
    lease transactions during the period, divided by the terms in months for
    such leases, multiplied by 12, divided by the total net rentable square
    feet leased under all lease transactions during the period.
(3) Equals work letter costs net of estimated profit and overhead. Actual
    tenant improvements may differ from estimated work letter costs.
(4) Equals the aggregate of leasing commissions payable to employees and third
    parties based on standard commission rates and excludes negotiated
    commission discounts obtained from time to time.
(5) Includes moving expenses, furniture allowances and other concessions.
(6) Equals aggregate base rent received over their respective terms from all
    lease transactions during the period minus all tenant improvements,
    leasing commissions and other concessions from all lease transactions
    during the period, divided by the terms in months from such leases,
    multiplied by 12, divided by the total net rentable square feet leased
    under all lease transactions during the period.
(7) Equals the amount of real estate taxes, operating costs and utility costs
    which the landlord is obligated to pay on an annual basis. The tenant is
    required to pay any increases above such amount.
(8) Equals effective rent minus Expense Stop.

  The following table sets forth certain information (on a per net rentable
square foot basis) regarding leasing activity at the Thousand Oaks Office
Property since January 1, 1992 (based upon an average of all lease
transactions during the respective periods):

                              YEAR ENDED DECEMBER 31,             NINE-MONTH
                          ----------------------------------     PERIOD ENDED
                           1992     1993     1994     1995    SEPTEMBER 30, 1996
                          -------  -------  -------  -------  ------------------
Number of lease
 transactions during
 period(1)..............      --         1        1        9             1
Rentable square feet
 during period(1).......      --     1,437    2,745   76,266         2,745
Base rent ($)(1)(2).....      --     25.01    23.40    23.09         24.00
Tenant improvements
 ($)(3).................      --     16.25      --      5.04           --
Leasing commissions
 ($)(4).................      --       --       --      4.90           --
Other concessions
 ($)(5).................      --       --       --       --            --
Effective rent ($)(6)...      --     22.73    23.40    21.42         24.00
Expense Stop ($)(7).....      --      6.45     6.16     6.49          6.16
Effective equivalent
 triple net rent
 ($)(8).................      --     16.28    17.24    14.93         17.84
Occupancy rate at end of
 period (%)(9)..........       NA       NA       NA    100.0%        100.0%

(footnotes on next page)

69


(1) Includes only office tenants with lease terms of 12 months or longer. Excludes leases for amenity, parking, retail and month-to-month office tenants.
(2) Equals aggregate base rent received over their respective terms from all lease transactions during the period, divided by the terms in months for such leases, multiplied by 12, divided by the total net rentable square feet leased under all lease transactions during the period.
(3) Equals work letter costs net of estimated profit and overhead. Actual tenant improvements may differ from estimated work letter costs.
(4) Equals the aggregate of leasing commissions payable to employees and third parties based on standard commission rates and excludes negotiated commission discounts obtained from time to time.
(5) Includes moving expenses, furniture allowances and other concessions.
(6) Equals aggregate base rent received over their respective terms from all lease transactions during the period minus all tenant improvements, leasing commissions and other concessions from all lease transactions during the period, divided by the terms in months from such leases, multiplied by 12, divided by the total net rentable square feet leased under all lease transactions during the period.
(7) Equals the amount of real estate taxes, operating costs and utility costs which the landlord is obligated to pay on an annual basis. The tenant is required to pay any increases above such amount. Expense Stop for 1996 is estimated.
(8) Equals effective rent minus Expense Stop.
(9) Occupancy data is not available for the years ended December 31, 1992, 1993 and 1994.

The following table sets forth certain information (on a per net rentable square foot basis) regarding leasing activity at 4175 E. La Palma Avenue, Building A, La Palma Business Center since January 1, 1992 (based upon an average of all lease transactions during the respective periods):

                              YEAR ENDED DECEMBER 31,          NINE-MONTH
                            ----------------------------      PERIOD ENDED
                             1992   1993   1994    1995   SEPTEMBER 30, 1996(1)
                            ------ ------ ------  ------  ---------------------
Number of lease
 transactions during
 period(2)................      NA    --       1       1              0
Rentable square feet
 during period(2).........      NA    --   3,348   2,038            --
Base rent ($)(2)(3).......      NA    --   19.36   16.48            --
Tenant improvements
 ($)(4)...................      NA    --     --     9.69            --
Leasing commissions
 ($)(5)...................      NA    --     --     2.06            --
Other concessions ($)(6)..      NA    --     --      --             --
Effective rent ($)(7).....      NA    --   19.36   14.17            --
Expense Stop ($)(8).......      NA    --    5.45    5.45            --
Effective equivalent tri-
 ple net rent ($)(9)......      NA    --   13.91    8.72            --
Occupancy rate at end of
 period (%)(2)(10)........      NA     NA   92.6%   93.2%          91.6%


(1) No leasing activity occurred during the nine-month period ended September 30, 1996.
(2) Includes only office tenants with lease terms of 12 months or longer. Excludes leases for amenity, parking, retail and month-to-month office tenants.
(3) Equals aggregate base rent received over their respective terms from all lease transactions during the period, divided by the terms in months for such leases, multiplied by 12, divided by the total net rentable square feet leased under all lease transactions during the period.
(4) Equals work letter costs net of estimated profit and overhead. Actual tenant improvements may differ from estimated work letter costs.
(5) Equals the aggregate of leasing commissions payable to employees and third parties based on standard commission rates and excludes negotiated commission discounts obtained from time to time.
(6) Includes moving expenses, furniture allowances and other concessions.
(7) Equals aggregate base rent received over their respective terms from all lease transactions during the period minus all tenant improvements, leasing commissions and other concessions from all lease transactions during the period, divided by the terms in months from such leases, multiplied by 12, divided by the total net rentable square feet leased under all lease transactions during the period.
(8) Equals the amount of real estate taxes, operating costs and utility costs which the landlord is obligated to pay on an annual basis. The tenant is required to pay any increases above such amount.
(9) Equals effective rent minus Expense Stop.
(10) Occupancy data is not available for the years ended December 31, 1992 and 1993.

70

The following table sets forth certain information (on a per net rentable square foot basis) regarding leasing activity at the Industrial Properties (other than the Industrial Properties at the La Palma Business Center which are being acquired upon consummation of the Offering and the Industrial Property located at 12752-12822 Monarch Street, Garden Grove, California, which was acquired by KI on behalf of the Company prior to consummation of the Offering) since January 1, 1992 (based upon an average of all lease transactions during the respective periods):

INDUSTRIAL PROPERTIES

                              YEAR ENDED DECEMBER 31,              NINE-MONTH
                          ----------------------------------      PERIOD ENDED
                           1992     1993     1994     1995    SEPTEMBER 30, 1996(1)
                          -------  -------  -------  -------  ---------------------
Number of lease
 transactions during
 period.................        1        1        1        2             0
Net rentable square feet
 leased during period...  100,000   70,000   76,570  171,550           --
Base rent ($)(2)........     6.39     6.81     7.23     4.99           --
Tenant improvements
 ($)(3).................     5.87     0.14     4.49     2.00           --
Leasing commissions
 ($)(4).................     1.37     1.49     3.49     1.84           --
Other concessions
 ($)(5).................      --       --       --       --            --
Effective rent ($)(6)...     5.19     6.48     6.44     4.63           --
Expense stop ($)(7).....      --       --       --       --            --
Effective equivalent
 triple net rent
 ($)(8).................     5.19     6.48     6.44     4.63
Occupancy rate at end of
 period (%).............     86.0%    77.6%    79.7%    98.4%         90.8%


(1) No leasing activity occurred during the nine-month period ended September 30, 1996.
(2) Equals aggregate base rent received over their respective terms from all lease transactions during the period, divided by the terms in months for such leases, multiplied by 12, divided by the total rentable square feet leased under all lease transactions during the period.
(3) Equals work letter costs net of estimated profit and overhead. Actual tenant improvements may differ from estimated work letter costs.
(4) Equals the aggregate of leasing commissions payable to employees and third parties based on standard commission rates and excludes negotiated commission discounts obtained from time to time.
(5) Includes moving expenses, furniture allowances and other concessions.
(6) Equals aggregate base rent received over their respective terms from all lease transactions during the period minus all tenant improvements, leasing commissions and other concessions from all lease transactions during the period, divided by the terms in months from such leases, multiplied by 12, divided by the total net rentable square feet leased under all lease transactions during the period.
(7) Leases for all Industrial Properties are written on a triple net basis, providing for each tenant to be responsible, in addition to base rent, for its proportionate share of real estate taxes, operating costs, utility costs and other expenses without regard to a base year.
(8) Equals effective rent minus Expense Stop.

71

The following table sets forth certain information (on a per net rentable square foot basis) regarding leasing activity at the La Palma Business Center and Monarch Street Industrial Properties since January 1, 1992 (based upon an average of all lease transactions during the respective periods):

INDUSTRIAL PROPERTIES

                                YEAR ENDED DECEMBER 31,          NINE-MONTH
                             ------------------------------     PERIOD ENDED
                              1992   1993   1994     1995    SEPTEMBER 30, 1996
                             -----  ------ ------   -------  ------------------
Number of lease
 transactions during
 period(1).................     NA       2     --         4              5
Rentable square feet during
 period(2).................     NA  63,094    --    229,952       107,381
Base rent ($)(2)...........     NA    7.37    --       3.66          4.72
Tenant improvements
 ($)(3)....................     NA    2.65    --       0.61          0.75
Leasing commissions
 ($)(4)....................     NA    3.61    --       0.55          1.25
Other concessions ($)(5)...     NA     --     --        --            --
Effective rent ($)(6)......     NA    7.37    --       3.48          4.34
Expense stop ($)(7)........     NA     --     --        --            --
Effective equivalent triple
 net rent ($)(8)...........     NA    7.37    --       3.48          4.34
Occupancy rate at end of
 period (%)(9).............     NA      NA   85.9%     78.7%        100.0%


(1) Includes only industrial tenants with lease terms of 12 months or longer.
(2) Equals aggregate base rent received over their respective terms from all lease transactions during the period, divided by the terms in months for such leases, multiplied by 12, divided by the total rentable square feet leased under all lease transactions during the period.
(3) Equals work letter costs net of estimated profit and overhead. Actual tenant improvements may differ from estimated work letter costs.
(4) Equals the aggregate of leasing commissions payable to employees and third parties based on standard commission rates and excludes negotiated commission discounts obtained from time to time.
(5) Includes moving expenses, furniture allowances and other concessions.
(6) Equals aggregate base rent received over their respective terms from all lease transactions during the period minus all tenant improvements, leasing commissions and other concessions from all lease transactions during the period, divided by the terms in months from such leases, multiplied by 12, divided by the total net rentable square feet leased under all lease transactions during the period.
(7) Leases for all Industrial Properties are written on a triple net basis, providing for each tenant to be responsible, in addition to base rent, for its proportionate share of real estate taxes, operating costs, utility costs and other expenses without regard to a base year.
(8) Equals effective rent minus Expense Stop.
(9) Occupancy data is not available for the years ending December 31, 1992 and 1993.

72

THE OFFICE AND INDUSTRIAL PROPERTIES

The following table sets forth certain information relating to each of the Properties as of December 31, 1995, unless indicated otherwise. This table gives pro forma effect to a recent extension of one of the leases with Hughes Space & Communications with respect to two of the Office Properties located at Kilroy Airport Center at El Segundo as if such lease renewal had occurred on January 1, 1995. After completion of the Formation Transactions, the Company (through the Operating Partnership) will own a 100% interest in all of the Office and Industrial Properties other than the five Office Properties located at Kilroy Airport Center Long Beach and the three Office Properties located at the SeaTac Office Center, each of which are held subject to ground leases expiring in 2035 and 2064 (assuming the exercise of the Company's options to extend such lease), respectively.

                                                                                                    AVERAGE
                                                      PERCENTAGE                         PERCENTAGE  BASE
                                               NET      LEASED     1995                   OF 1995    RENT
                                            RENTABLE    AS OF      BASE        1995        TOTAL      PER     EFFECTIVE
                                             SQUARE    12/31/95    RENT      EFFECTIVE      BASE    SQ. FT.    RENT PER
       PROPERTY LOCATION         YEAR BUILT   FEET      (%)(1)   ($000)(2) RENT($000)(3)  RENT (%)  ($)(4)  SQ. FT. ($)(5)
       -----------------         ---------- --------- ---------- --------- ------------- ---------- ------- --------------
Office Properties:
Kilroy Airport Center at El
 Segundo
 2250 E. Imperial Highway(8)....     1983     291,187    80.9      4,316       4,042        11.5     18.32      17.16
 2260 E. Imperial Highway)(9)...     1983     291,187   100.0      7,160       6,545        19.1     24.59      22.48
 2240 E. Imperial Highway
 El Segundo, California(10).....     1983     118,933   100.0      1,130       1,121         3.0      9.50       9.43
Kilroy Airport Center Long Beach
 3900 Kilroy Airport Way(11)....     1987     126,840    94.0      2,282       2,092         6.1     19.14      17.55
 3880 Kilroy Airport Way(11)....     1987      98,243   100.0      1,296       1,022         3.5     13.19      10.40
 3760 Kilroy Airport Way........     1989     165,278    92.1      3,372       2,807         9.0     22.16      18.45
 3780 Kilroy Airport Way........     1989     219,745    63.6      3,465       3,005         9.2     24.79      21.50
 3750 Kilroy Airport Way
 Long Beach, California.........     1989      10,457   100.0         75          28         0.2      7.21       2.66
SeaTac Office Center
 18000 Pacific Highway..........     1974     207,092    58.7      1,799       1,510         4.8     14.80      12.42
 17930 Pacific Highway..........     1980     210,899     --         --          --          --        --         --
 17900 Pacific Highway
  Seattle, Washington...........     1980     113,605    87.7      1,896       1,820         5.0     19.02      18.26
La Palma Business Center
 4175 E. La Palma Avenue
  Anaheim, California(11).......     1985      42,790    93.2        493         475         1.3     12.37      11.92
2829 Townsgate Road
 Thousand Oaks, California(11)..     1990      81,158   100.0      1,888       1,760         5.0     23.26      21.69
185 S. Douglas Street
 El Segundo, California(12).....     1978      60,000   100.0      1,313         898         3.5     21.89      14.96
                                            ---------   -----     ------      ------        ----     -----      -----
Subtotal/Weighted Average                   2,037,414    77.0     30,485      27,125        81.2     19.44      17.30
                                            ---------   -----     ------      ------        ----     -----      -----
Industrial Properties:
2031 E. Mariposa Avenue
 El Segundo, California.........     1954     192,053   100.0      1,556       1,296         4.1      8.10       6.75
3340 E. La Palma Avenue
 Anaheim, California............     1966     153,320   100.0        881         790         2.3      5.74       5.16
2260 E. El Segundo Boulevard
 El Segundo, California(13).....     1979     113,820   100.0        553         510         1.5      4.86       4.48
2265 E. El Segundo Boulevard
 El Segundo, California.........     1978      76,570   100.0        554         493         1.5      7.23       6.44
1000 E. Ball Road
 Anaheim, California(14)........     1956     100,000   100.0        639         519         1.7      6.39       5.19
1230 S. Lewis Street
 Anaheim, California............     1982      57,730   100.0        303         284         0.8      5.25       4.92
12681/12691 Pala Drive
 Garden Grove, California ......     1970      84,700    82.6        476         454         1.3      6.81       6.48
            TENANTS LEASING
PERCENTAGE   10% OR MORE OF
  LEASED     NET RENTABLE
  AS OF     SQUARE FEET PER
 9/30/96       PROPERTY
  (%)(6)   AS OF 9/30/96(7)
---------- -----------------
   83.9    Hughes Space &
           Communications
           (33.0%)
  100.0    Hughes Space &
           Communications
           (100.0%)

  100.0    Hughes Space &
           Communications
           (94.6%)
   94.0    McDonnell
           Douglas
           Corporation
           (50.9%), Olympus
           America, Inc.
           (18.6%)
  100.0    Devry, Inc.
           (100.0%)
   82.6    R.L. Polk & Co.
           (9.8%)
   92.2    SCAN Health Plan
           (20.4%), Zelda
           Fay Walls (12.7%)
  100.0    Oasis Cafe
           (37.1%),
           Keywanfar &
           Baroukhim
           (16.1%),
           SR Impressions
           (15.0%)
   60.0    Principal Mutual
           (8.8%),
           Lynden (8.8%),
           Rayonier (8.0%)
    --     --

   87.7    Key Bank
           (41.9%)(15),
           Northwest
           Airlines
           (24.9%),
           City of Sea Tac
           (17.2%)

   91.6    Peryam & Kroll
           (26.7%),
           DMV/VPI
           Insurance Group
           (26.5%),
           Midcom
           Corporation
           (15.5%)

  100.0    Worldcom, Inc.
           (34.2%), Data
           Select Systems,
           Inc. (13.0%),
           Pepperdine
           University
           (12.7%),
           Anheuser Busch,
           Inc. (12.0%)

  100.0    Northwest
           Airlines, Inc.
  (100%)
  ------
   79.8
  ------
           Mattel, Inc.
  100.0    (100%)
           Furon Co., Inc.
   59.2    (59.2%)
           Ace Medical Co.
  100.0    (100%)
  100.0    MSAS Cargo
           Intl., Inc.
           (100%)

  100.0    Allen-Bradley
           Company (100%)

  100.0    Extron
           Electronics (100%)

   82.6    Rank Video Services America, Inc.
           (82.6%)

(footnotes on next page)

73

                                                                                        AVERAGE
                                          PERCENTAGE                         PERCENTAGE  BASE                  PERCENTAGE
                                   NET      LEASED     1995                   OF 1995    RENT                    LEASED
                                RENTABLE    AS OF      BASE        1995        TOTAL      PER     EFFECTIVE      AS OF
                                 SQUARE    12/31/95    RENT      EFFECTIVE      BASE    SQ. FT.    RENT PER     9/30/96
  PROPERTY LOCATION  YEAR BUILT   FEET      (%)(1)   ($000)(2) RENT($000)(3)  RENT (%)  ($)(4)  SQ. FT. ($)(5)   (%)(6)
  -----------------  ---------- --------- ---------- --------- ------------- ---------- ------- -------------- ----------
2270 E. El
 Segundo
 Boulevard
 El Segundo,
 California.....        1975        7,500   100.0        129         129         0.3     17.17      17.17          --
5115 N. 27th
 Avenue
 Phoenix,
 Arizona(16)....        1962      130,877   100.0        640         612         1.7      4.89       4.68        100.0
12752-12822
 Monarch Street
 Garden Grove,
 CA(17).........        1970      277,037    76.4        727         715         1.9      3.43       3.38        100.0
4155 E. La Palma
 Avenue
 Anaheim,
 CA(11)(17).....        1985       74,618   100.0        325         237         0.9      4.36       3.18        100.0
4125 La Palma
 Avenue
 Anaheim,
 CA(11)(17).....        1985       69,472    65.6        319         302        0 .8      7.00       6.63        100.0
                                ---------   -----     ------      ------       -----     -----      -----        -----
Subtotal/Weighted
 Average                        1,337,697    92.2      7,102       6,341        18.8      5.76       5.14         93.7
                                ---------   -----     ------      ------       -----     -----      -----        -----
Office &
 Industrial--All
 Properties                     3,375,111    83.0     37,587      33,466       100.0     13.42      11.95         85.3
                                ---------   -----     ------      ------       -----     -----      -----        -----
                            TENANTS LEASING
                             10% OR MORE OF
                             NET RENTABLE
                       SQUARE FEET PER PROPERTY
  PROPERTY LOCATION        AS OF 9/30/96(7)
  -----------------    ------------------------
2270 E. El
 Segundo
 Boulevard
 El Segundo,
 California.....                  --
5115 N. 27th
 Avenue
 Phoenix,
 Arizona(16)....     Festival Markets, Inc. (100%)
12752-12822
 Monarch Street      Cannon Equipment (60%),
 Garden Grove,       Vanco (16.4%)
 CA(17).........
4155 E. La Palma
 Avenue              Bond Technologies (29.6%),
 Anaheim,            NovaCare Orthotics (24.0%),
 CA(11)(17).....     Specialty Restaurants Corp.
                      (21.7%)
4125 La Palma
 Avenue
 Anaheim,            Household Finance
 CA(11)(17).....     Corporation (59%), CSTS (34%)
Subtotal/Weighted
 Average
Office &
 Industrial--All
 Properties


(1) Based on all leases at the respective Properties in effect as of December 31, 1995.
(2) Total base rent for the year ended December 31, 1995, determined in accordance with generally accepted accounting principles ("GAAP"). All leases at the Industrial Properties are written on a triple net basis. Unless otherwise indicated, all leases at the Office Properties are written on a full service gross basis, with the landlord obligated to pay the tenant's proportionate share of taxes, insurance and operating expenses up to the amount incurred during the tenant's first year of occupancy ("Base Year") or a negotiated amount approximating the tenant's pro rata share of real estate taxes, insurance and operating expenses ("Expense Stop"). Each tenant pays its pro rata share of increases in expenses above the Base Year or Expense Stop.
(3) Aggregate base rent received over their respective terms from all leases in effect at December 31, 1995 minus all tenant improvements, leasing commissions and other concessions for all such leases, divided by the terms in months for such leases, multiplied by 12. Tenant improvements, leasing commissions and other concessions are estimated using the same methodology used to calculate effective rent for the Properties as a whole in the charts set forth under the caption "Business and Properties--General."
(4) Base rent for the year ended December 31, 1995 divided by net rentable square feet leased at December 31, 1995.
(5) Effective rent at December 31, 1995 divided by net rentable square feet leased at December 31, 1995.
(6) Based on all leases at the respective Properties dated on or before September 30, 1996. Occupancy for all Properties at December 31, 1996 was approximately 88.2%.
(7) Excludes office space leased by the Company.
(8) For this Property, a lease with Hughes Space & Communications, for approximately 96,000 rentable square feet, and with SDRC Software Products Marketing Division, Inc., for approximately 6,800 rentable square feet, are written on a full service gross basis except that there is no Expense Stop.
(9) For this Property, the lease with Hughes Space & Communications is written on a modified full service gross basis under which Hughes Space & Communications pays for all utilities and other internal maintenance costs with respect to the leased space and, in addition, pays its pro rata share of real estate taxes, insurance, and certain other expenses including common area expenses.
(10) For this Property, leases with Hughes Space & Communications for approximately 101,000 rentable square feet are written on a full service gross basis except that there is no Expense Stop.
(11) This Property is an Acquisition Property.
(12) For this Property, the lease is written on a triple net basis.
(13) This Industrial Property was vacant until April 1995. The tenant began paying rent in mid-October 1995 at an annual rate of $4.86 per rentable square foot.
(14) The tenant subleased this Industrial Property on May 15, 1996 to RGB Systems, Inc. (doing business as Extron Electronics), the tenant of the Property located at 1230 S. Lewis Street, Anaheim, California, which is adjacent to this Property. The sublease is at an amount less than the current lease rate, and the tenant is paying the difference between the current lease rate and the sublease rate. The lease and the sublease terminate in April 1998. Extron Electronics has executed a lease for this space from May 1998 through April 2005 at the current lease rate. Extron Electronics continues to occupy the space located at 1230 S. Lewis Street.
(15) This lease terminates on December 31, 1996.
(16) This Industrial Property was originally designed for multi-tenant use and currently is leased to a single tenant and utilized as an indoor multi- vendor retail marketplace.
(17) The leases for this Industrial Property are written on a modified triple net basis, with the tenants responsible for estimated allocated common area expenses.

74

OCCUPANCY AND RENTAL INFORMATION

The following table sets forth the average percentage leased and average annual base rent per leased square foot for the Properties for the past three years:

                                                                  AVERAGE
                                                                   ANNUAL
                                                                 BASE RENT
                                                     AVERAGE    PER RENTABLE
                                                   PERCENTAGE      SQUARE
YEAR                                              LEASED (%)(1)  FOOT($)(2)
----                                              ------------- ------------
OFFICE:
 1995............................................     77.0         19.42
 1994............................................     70.9(3)      20.35(3)
 1993............................................     76.1(3)      21.87(3)
INDUSTRIAL:
 1995............................................     81.5          6.52
 1994............................................     78.7(3)       6.71(3)
 1993............................................     81.8(3)       6.73(3)


(1) Average of beginning and end-of-year aggregate percentage leased.
(2) Total base rent for the year, determined in accordance with GAAP, divided by the average of the beginning and end-of-year aggregate rentable square feet leased.
(3) Excludes data from the Thousands Oaks Office Property and the La Palma Business Center which are being acquired in connection with the Offering and the Industrial Property located at 12752-12822 Monarch Street, Garden Grove, California which was acquired by KI on behalf of the Company prior to consummation of the Offering.

LEASE EXPIRATIONS

The following table sets out a schedule of the lease expirations for the Office Properties for each of the ten years beginning with 1996, assuming that none of the tenants exercises renewal options or termination rights:

                                        NET      PERCENTAGE OF    ANNUAL      AVERAGE ANNUAL
                                      RENTABLE    TOTAL LEASED     BASE        RENT PER NET
                                    AREA SUBJECT  SQUARE FEET   RENT UNDER RENTABLE SQUARE FOOT
                          NUMBER OF TO EXPIRING  REPRESENTED BY  EXPIRING     REPRESENTED BY
     YEAR OF LEASE        EXPIRING     LEASES       EXPIRING      LEASES         EXPIRING
       EXPIRATION         LEASES(1)  (SQ. FT.)    LEASES(%)(2)  ($000)(3)      LEASES($)(4)
     -------------        --------- ------------ -------------- ---------- --------------------
10/01/96-12/31/1996.....       7        83,080         5.26      $ 1,340          $16.13
               1997.....      16        61,854         3.92        1,226           19.82
               1998.....      20        85,138         5.39        1,942           22.80
               1999.....      29       261,082        16.53        4,507           17.26
               2000.....      24       149,969         9.50        3,300           22.00
               2001(4)..      20       289,383        18.32        5,105           17.64
               2002.....       2        83,047         5.26        1,606           19.34
               2003.....       3        17,574         1.11          346           19.72
               2004.....       4       311,491        19.72        7,731           24.82
               2005 and
 beyond.................      10       236,731        14.99        4,174           17.63
                             ---     ---------       ------      -------          ------
  Totals................     135     1,579,349       100.00      $31,278          $19.80
                             ===     =========       ======      =======          ======


(1) Includes office tenants only. Excludes leases for amenity, retail, parking and month-to-month office tenants. Some tenants have multiple leases.
(2) Excludes all space vacant as of December 31, 1995 unless a lease for a replacement tenant has been dated on or before September 30, 1996.
(3) Determined based upon aggregate base rent to be received over the term divided by the term in months multiplied by 12, including all leases dated on or before September 30, 1996. Certain leases became effective subsequent to September 30, 1996.
(4) Includes Hughes Space & Communications leases of 96,133 and 11,556 net rentable square feet at Kilroy Airport Center at El Segundo. These leases expire in October 2001 and are at a triple net base rental rate of $14.04 per square foot.

75

The following table sets out a schedule of the lease expirations for the Industrial Properties for each of the ten years beginning with 1996, assuming that none of the tenants exercises renewal options or termination rights:

                                       NET      PERCENTAGE OF    ANNUAL      AVERAGE ANNUAL
                                     RENTABLE    TOTAL LEASED     BASE        RENT PER NET
                                   AREA SUBJECT  SQUARE FEET   RENT UNDER RENTABLE SQUARE FOOT
                         NUMBER OF TO EXPIRING  REPRESENTED BY  EXPIRING     REPRESENTED BY
     YEAR OF LEASE       EXPIRING     LEASES       EXPIRING      LEASES         EXPIRING
       EXPIRATION         LEASES    (SQ. FT.)    LEASES(%)(1)  ($000)(2)       LEASES($)
     -------------       --------- ------------ -------------- ---------- --------------------
10/01/96-12/31/1996.....      0           --           --           --             --
1997....................      0           --           --           --             --
1998....................      1        70,000         5.61          476           6.81
1999....................      1        22,888         1.83           78           3.41
2000....................      3       210,464        16.86        1,594           7.58
2001....................      4       189,667        15.19          918           4.84
2002....................      0           --           --           --             --
2003....................      4       252,966        20.26        1,204           4.76
2004....................      1        76,570         6.13          554           7.23
2005 and beyond.........      6       425,787        34.12        2,317           5.44
                            ---     ---------       ------       ------          -----
    Totals..............     20     1,248,342       100.00       $7,141          $5.72
                            ===     =========       ======       ======          =====


(1) Excludes all space vacant as of December 31, 1995 unless a lease for a replacement tenant has been dated on or before September 30, 1996.
(2) Determined based upon aggregate base rent to be received over the term divided by the term in months multiplied by 12, including all leases dated on or before September 30, 1996.

76

The following table sets forth detailed lease expiration information for each of the Properties for leases in place as of September 30, 1996, assuming that none of the tenants exercise renewal options or terminations rights, if any, at or prior to the scheduled expirations:

OFFICE PROPERTIES

                                                                             YEAR OF LEASE EXPIRATION
                  ----------------------------------------------------------------------------------------------
                   1996(1)       1997        1998        1999        2000        2001        2002        2003
                  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
2250 E. Imperial
Highway
El Segundo, CA
 Square Footage
 of Expiring
 Leases..........      1,317       4,385      23,033      29,148      18,201     112,715      18,517
 Percentage of
 Total Leased Sq.
 Ft..............       0.58%       1.92%      10.07%      12.74%       7.96%      49.28%       8.10%
 Annualized Base
 Rent of Expiring
 Leases.......... $   24,496  $   83,025  $  464,705  $  695,821  $  302,853  $1,653,035  $  456,220
 Percentage of
 Total Annualized
 Base Rent.......       0.59%       1.99%      11.16%      16.70%       7.27%      39.68%      10.95%
 Number of Leases
 Expiring........          1           3           6           4           2           3           1
2260 E. Imperial
Highway
El Segundo, CA
 Square Footage
 of Expiring
 Leases..........
 Percentage of
 Total Leased Sq.
 Ft..............
 Annualized Base
 Rent of Expiring
 Leases..........
 Percentage of
 Total Annualized
 Base Rent.......
 Number of Leases
 Expiring........
2240 E. Imperial
Highway
El Segundo, CA
 Square Footage
 of Expiring
 Leases..........                                        100,978                  15,898
 Percentage of
 Total Leased Sq.
 Ft..............                                          86.40%                  13.60%
 Annualized Base
 Rent of Expiring
 Leases..........                                     $1,085,716              $  196,670
 Percentage of
 Total Annualized
 Base Rent.......                                          84.66%                  15.34%
 Number of Leases
 Expiring........                                              1                       2
3900 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........                             26,356      12,406       6,811                  64,530
 Percentage of
 Total Leased Sq.
 Ft..............                              22.10%      10.41%       5.71%                  54.12%
 Annualized Base
 Rent of Expiring
 Leases..........                         $  516,551  $  221,992  $  124,105              $1,149,922
 Percentage of
 Total Annualized
 Base Rent.......                              22.63%       9.73%       5.44%                  50.39%
 Number of Leases
 Expiring........                                  2           2           1                       1
3880 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........
 Percentage of
 Total Leased Sq.
 Ft..............
 Annualized Base
 Rent of Expiring
 Leases..........
 Percentage of
 Total Annualized
 Base Rent.......
 Number of Leases
 Expiring........


                  ----------------------------------------------------------
                     2004        2005       2006        2009        TOTAL
                  ----------  ---------- ----------  ----------  -----------
2250 E. Imperial
Highway
El Segundo, CA
 Square Footage
 of Expiring
 Leases..........     21,418                                         228,734
 Percentage of
 Total Leased Sq.
 Ft..............       9.35%                                            100%
 Annualized Base
 Rent of Expiring
 Leases.......... $  485,244                                     $ 4,165,399
 Percentage of
 Total Annualized
 Base Rent.......      11.66%                                            100%
 Number of Leases
 Expiring........          2                                              22
2260 E. Imperial
Highway
El Segundo, CA
 Square Footage
 of Expiring
 Leases..........    286,151                                         286,151
 Percentage of
 Total Leased Sq.
 Ft..............     100.00%                                            100%
 Annualized Base
 Rent of Expiring
 Leases.......... $7,160,207                                     $ 7,160,207
 Percentage of
 Total Annualized
 Base Rent.......     100.00%                                            100%
 Number of Leases
 Expiring........          1                                               1
2240 E. Imperial
Highway
El Segundo, CA
 Square Footage
 of Expiring
 Leases..........                                                    116,876
 Percentage of
 Total Leased Sq.
 Ft..............                                                        100%
 Annualized Base
 Rent of Expiring
 Leases..........                                                $ 1,282,386
 Percentage of
 Total Annualized
 Base Rent.......                                                        100%
 Number of Leases
 Expiring........                                                          3
3900 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........                             9,128                  119,231
 Percentage of
 Total Leased Sq.
 Ft..............                              7.66%                     100%
 Annualized Base
 Rent of Expiring
 Leases..........                        $  269,532              $ 2,282,102
 Percentage of
 Total Annualized
 Base Rent.......                             11.81%                     100%
 Number of Leases
 Expiring........                                 1                        7
3880 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........                                        98,243       98,243
 Percentage of
 Total Leased Sq.
 Ft..............                                        100.00%         100%
 Annualized Base
 Rent of Expiring
 Leases..........                                    $1,296,270  $ 1,296,270
 Percentage of
 Total Annualized
 Base Rent.......                                        100.00%         100%
 Number of Leases
 Expiring........                                             1            1


(1) Represents lease expirations data from October 1, 1996 to December 31, 1996.

77

                                                                             YEAR OF LEASE EXPIRATION
                  ----------------------------------------------------------------------------------------------
                   1996(1)       1997        1998        1999        2000        2001        2002       2003
                  ----------  ----------  ----------  ----------  ----------  ----------  ---------- ----------
 3760 Kilroy
  Airport Way
  Long Beach, CA
 Square Footage
  of Expiring
  Leases.........     12,545       8,698      23,598      46,675      19,385      27,470                  4,892
 Percentage of
  Total Leased
  Sq. Ft.........       8.76%       6.07%      16.47%      32.58%      13.53%      19.17%                  3.41%
 Annualized Base
 Rent of Expiring
 Leases.......... $  334,440  $  194,155  $  529,690  $  947,293  $  412,749  $  560,406             $  100,330
 Percentage of
 Total Annualized
 Base Rent.......      10.86%       6.31%      17.20%      30.77%      13.41%      18.20%                  3.26%
 Number of Leases
 Expiring........          2           1           4           9           3           3                      1
3780 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........                 22,469       2,088       4,339      74,093      28,251                  9,439
 Percentage of
 Total Leased Sq.
 Ft..............                  11.47%       1.07%       2.22%      37.82%      14.42%                  4.82%
 Annualized Base
 Rent of Expiring
 Leases..........             $  532,872  $   47,606  $   89,709  $1,816,896  $  638,222             $  209,299
 Percentage of
 Total Annualized
 Base Rent.......                  11.85%       1.06%       1.99%      40.40%      14.19%                  4.65%
 Number of Leases
 Expiring........                      4           1           2           7           5                      1
3750 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........                                                      1,570       1,685
 Percentage of
 Total Leased Sq.
 Ft..............                                                      22.01%      23.62%
 Annualized Base
 Rent of Expiring
 Leases..........                                                 $   37,155  $   11,400
 Percentage of
 Total Annualized
 Base Rent.......                                                      49.28%      15.12%
 Number of Leases
 Expiring........                                                          1           1
18000 Pacific
 Highway
Seattle, WA
 Square Footage
 of Expiring
 Leases..........     21,669      14,633       5,171       8,941       8,678      20,974                  3,243
 Percentage of
 Total Leased Sq.
 Ft. ............      19.99%      13.50%       4.77%       8.25%       8.01%      19.35%                  2.99%
 Annualized Base
 Rent of Expiring
 Leases.......... $  313,357  $  209,460  $   81,505  $  119,698  $  132,601  $  383,924             $   36,845
 Percentage of
 Total Annualized
 Base Rent.......      18.33%      12.25%       4.77%       7.00%       7.76%      22.46%                  2.16%
 Number of Leases
 Expiring........          3           3           4           6           4           2                      1
17930 Pacific
 Highway
Seattle, WA
 Square Footage
 of Expiring
 Leases..........
 Percentage of
 Total Leased Sq.
 Ft. ............
 Annualized Base
 Rent of Expiring
 Leases..........
 Percentage of
 Total Annualized
 Base Rent.......
 Number of Leases
 Expiring........

                   ----------------------------------------------------------
                      2004        2005        2006        2009       TOTAL
                   ----------  ----------  ----------  ---------- -----------
 3760 Kilroy
  Airport Way
  Long Beach, CA
 Square Footage
  of Expiring
  Leases.........                                                     143,263
 Percentage of
  Total Leased
  Sq. Ft.........                                                         100%
 Annualized Base
 Rent of Expiring
 Leases..........                                                 $ 3,079,063
 Percentage of
 Total Annualized
 Base Rent.......                                                         100%
 Number of Leases
 Expiring........                                                          23
3780 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........       3,922                  51,290                 195,891
 Percentage of
 Total Leased Sq.
 Ft..............        2.00%                  26.18%                    100%
 Annualized Base
 Rent of Expiring
 Leases..........  $   85,656              $1,077,090             $ 4,497,350
 Percentage of
 Total Annualized
 Base Rent.......        1.90%                  23.95%                    100%
 Number of Leases
 Expiring........           1                       2                      23
3750 Kilroy
Airport Way
Long Beach, CA
 Square Footage
 of Expiring
 Leases..........                   3,878                               7,133
 Percentage of
 Total Leased Sq.
 Ft..............                   54.37%                                100%
 Annualized Base
 Rent of Expiring
 Leases..........              $   26,839                         $    75,394
 Percentage of
 Total Annualized
 Base Rent.......                   35.60%                                100%
 Number of Leases
 Expiring........                       1                                   3
18000 Pacific
 Highway
Seattle, WA
 Square Footage
 of Expiring
 Leases..........                              25,087                 108,396
 Percentage of
 Total Leased Sq.
 Ft. ............                               23.14%                    100%
 Annualized Base
 Rent of Expiring
 Leases..........                          $  432,104             $ 1,709,494
 Percentage of
 Total Annualized
 Base Rent.......                               25.28%                    100%
 Number of Leases
 Expiring........                                   2                      25
17930 Pacific
 Highway
Seattle, WA
 Square Footage
 of Expiring
 Leases..........                                                         --
 Percentage of
 Total Leased Sq.
 Ft. ............                                                         --
 Annualized Base
 Rent of Expiring
 Leases..........                                                         --
 Percentage of
 Total Annualized
 Base Rent.......                                                         --
 Number of Leases
 Expiring........                                                         --


(1) Represents lease expirations data from October 1, 1996 to December 31, 1996.

78

                                                                              YEAR OF LEASE EXPIRATION
                   ----------------------------------------------------------------------------------------------
                    1996(1)       1997        1998        1999        2000        2001        2002        2003
                   ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
17900 Pacific
 Highway
Seattle, WA
 Square Footage
  of Expiring
  Leases.........      47,549                              23,772
 Percentage of
  Total Leased
  Sq. Ft. .......       47.73%                              23.86%
 Annualized Base
  Rent of
  Expiring
  Leases.........  $  667,587                          $  512,695
 Percentage of
  Total
  Annualized Base
  Rent...........       37.03%                              28.44%
 Number of Leases
  Expiring.......           1                                   3
4175 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                   8,924       1,300                   2,038      22,390
 Percentage of
  Total Leased
  Sq. Ft. .......                   25.75%       3.75                    5.88%      64.61%
 Annualized Base
  Rent of
  Expiring
  Leases.........              $  141,093  $   48,113              $   19,595  $  348,230
 Percentage of
  Total
  Annualized Base
  Rent...........                   25.33%       8.64                    3.52%      62.52%
 Number of Leases
  Expiring.......                       4           1                       1           3
2829 Townsgate
 Road
Thousand Oaks, CA
 Square Footage
  of Expiring
  Leases.........                   2,745       3,592      34,823      19,193
 Percentage of
  Total Leased
  Sq. Ft. .......                    3.38%       4.43%      42.91%      23.65%
 Annualized Base
  Rent of
  Expiring
  Leases.........              $   65,064  $   84,384  $  834,132  $  454,075
 Percentage of
  Total
  Annualized Base
  Rent...........                    3.45%       4.47%      44.18%      24.05%
 Number of Leases
  Expiring.......                       1           1           2           5
185 S. Douglas
 Street
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........                                                                  60,000
 Percentage of
  Total Leased
  Sq. Ft. .......                                                                  100.00%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                              $1,313,418
 Percentage of
  Total
  Annualized Base
  Rent...........                                                                 100.00%
 Number of Leases
  Expiring.......                                                                       1
OFFICE SUBTOTALS
 Square Footage
  of Expiring
  Leases.........      83,080      61,854      85,138     261,082     149,969     289,383      83,047      17,574
 Percentage of
  Aggregate
  Leased
  Sq. Ft. .......        5.26%       3.92%       5.39%      16.53%       9.50%      18.32%       5.26%       1.11%
 Annualized Base
  Rent of
  Expiring
  Leases.........  $1,339,880  $1,225,669  $1,772,554  $4,507,056  $3,300,029  $5,105,305  $1,606,142  $  346,474
 Percentage of
  Aggregate
  Annualized Base
  Rent...........        4.31%       3.94%       5.70%      14.49%      10.61%      16.41%       5.16%       1.11%
 Number of Leases
  Expiring.......           7          16          19          29          24          20           2           3

                    -----------------------------------------------------------
                       2004        2005        2006        2009        TOTAL
                    ----------  ----------  ----------  ----------  -----------
17900 Pacific
 Highway
Seattle, WA
 Square Footage
  of Expiring
  Leases.........                   28,300                               99,621
 Percentage of
  Total Leased
  Sq. Ft. .......                    28.41%                                 100%
 Annualized Base
  Rent of
  Expiring
  Leases.........               $  622,317                          $ 1,802,599
 Percentage of
  Total
  Annualized Base
  Rent...........                    34.52%                                 100%
 Number of Leases
  Expiring.......                        1                                    5
4175 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                                                        34,652
 Percentage of
  Total Leased
  Sq. Ft. .......                                                           100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                   $   557,031
 Percentage of
  Total
  Annualized Base
  Rent...........                                                           100%
 Number of Leases
  Expiring.......                                                             9
2829 Townsgate
 Road
Thousand Oaks, CA
 Square Footage
  of Expiring
  Leases.........                   20,805                               81,158
 Percentage of
  Total Leased
  Sq. Ft. .......                    25.64%                                 100%
 Annualized Base
  Rent of
  Expiring
  Leases.........               $  450,288                          $ 1,887,943
 Percentage of
  Total
  Annualized Base
  Rent...........                    23.85%                                 100%
 Number of Leases
  Expiring.......                        2                                   11
185 S. Douglas
 Street
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........                                                        60,000
 Percentage of
  Total Leased
  Sq. Ft. .......                                                           100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                   $ 1,313,418
 Percentage of
  Total
  Annualized Base
  Rent...........                                                           100%
 Number of Leases
  Expiring.......                                                             1
OFFICE SUBTOTALS
 Square Footage
  of Expiring
  Leases.........      311,491      52,983      85,505      98,243    1,579,349
 Percentage of
  Aggregate
  Leased
  Sq. Ft. .......        19.72%       3.35%       5.41%       6.22%         100%
 Annualized Base
  Rent of
  Expiring
  Leases.........   $7,731,107  $1,099,444  $1,778,726  $1,296,270  $31,108,655
 Percentage of
  Aggregate
  Annualized Base
  Rent...........        24.85%       3.53%       5.72%       4.17%         100%
 Number of Leases
  Expiring.......            4           4           5           1          134


(1) Represents lease expirations data from October 1, 1996 to December 31, 1996.

79

INDUSTRIAL PROPERTIES

                                                                              YEAR OF LEASE EXPIRATION
                   ----------------------------------------------------------------------------------------
                    1996(1)      1997       1998       1999       2000        2001       2002       2003
                   ---------- ---------- ---------- ---------- ----------  ---------- ---------- ----------
2031 E. Mariposa
 Avenue
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........                                                 192,053
 Percentage of
  Total Leased
  Sq. Ft. .......                                                  100.00%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                              $1,556,321
 Percentage of
  Total
  Annualized Base
  Rent...........                                                  100.00%
 Number of Leases
  Expiring.......                                                       1
3332 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........
 Percentage of
  Total Leased
  Sq. Ft. .......
 Annualized Base
  Rent of
  Expiring
  Leases.........
 Percentage of
  Total
  Annualized Base
  Rent...........
 Number of Leases
  Expiring.......
2260 E. El
 Segundo
 Boulevard
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........
 Percentage of
  Total Leased
  Sq. Ft. .......
 Annualized Base
  Rent of
  Expiring
  Leases.........
 Percentage of
  Total
  Annualized Base
  Rent...........
 Number of Leases
  Expiring.......
2265 E. El
 Segundo
 Boulevard
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........
 Percentage of
  Total Leased
  Sq. Ft. .......
 Annualized Base
  Rent of
  Expiring
  Leases.........
 Percentage of
  Total
  Annualized Base
  Rent...........
 Number of Leases
  Expiring.......
1000 E. Ball Road
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........
 Percentage of
  Total Leased
  Sq. Ft. .......
 Annualized Base
  Rent of
  Expiring
  Leases.........
 Percentage of
  Total
  Annualized Base
  Rent...........
 Number of Leases
  Expiring.......


                   ----------------------------------------------------------
                      2004        2005        2006        2009       TOTAL
                   ----------  ----------  ----------  ---------- -----------
2031 E. Mariposa
 Avenue
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........                                                     192,053
 Percentage of
  Total Leased
  Sq. Ft. .......                                                         100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                 $ 1,556,321
 Percentage of
  Total
  Annualized Base
  Rent...........                                                         100%
 Number of Leases
  Expiring.......                                                           1
3332 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                  90,746                              90,746
 Percentage of
  Total Leased
  Sq. Ft. .......                  100.00%                                100%
 Annualized Base
  Rent of
  Expiring
  Leases.........              $  543,180                         $   543,180
 Percentage of
  Total
  Annualized Base
  Rent...........                  100.00%                                100%
 Number of Leases
  Expiring.......                       1                                   1
2260 E. El
 Segundo
 Boulevard
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........                             113,820                 113,820
 Percentage of
  Total Leased
  Sq. Ft. .......                              100.00%                    100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                          $  553,300             $   553,300
 Percentage of
  Total
  Annualized Base
  Rent...........                              100.00%                    100%
 Number of Leases
  Expiring.......                                   1                       1
2265 E. El
 Segundo
 Boulevard
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........      76,570                                          76,570
 Percentage of
  Total Leased
  Sq. Ft. .......      100.00%                                            100%
 Annualized Base
  Rent of
  Expiring
  Leases.........  $  553,934                                     $   553,934
 Percentage of
  Total
  Annualized Base
  Rent...........      100.00%                                            100%
 Number of Leases
  Expiring.......           1                                               1
1000 E. Ball Road
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                 100,000                             100,000
 Percentage of
  Total Leased
  Sq. Ft. .......                  100.00%                                100%
 Annualized Base
  Rent of
  Expiring
  Leases.........              $  639,432                         $   639,432
 Percentage of
  Total
  Annualized Base
  Rent...........                  100.00%                                100%
 Number of Leases
  Expiring.......                       1                                   1


(1) Represents lease expirations data from October 1, 1996 to December 31, 1996.

80

                                                                             YEAR OF LEASE EXPIRATION
                  ------------------------------------------------------------------------------------------
                   1996(1)      1997       1998        1999        2000       2001        2002       2003
                  ---------- ---------- ----------  ----------  ---------- ----------  ---------- ----------
1230 S. Lewis
 Street
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........
 Percentage of
  Total Leased
  Sq. Ft. .......
 Annualized Base
  Rent of
  Expiring
  Leases.........
 Percentage of
  Total
  Annualized Base
  Rent...........
 Number of Leases
  Expiring.......
12681/12691 Pala
 Drive
Garden Grove, CA
 Square Footage
  of Expiring
  Leases.........                           70,000
 Percentage of
  Total Leased
  Sq. Ft. .......                           100.00%
 Annualized Base
  Rent of
  Expiring
  Leases.........                       $  476,358
 Percentage of
  Total
  Annualized Base
  Rent...........                           100.00%
 Number of Leases
  Expiring.......                                1
2270 E. El
 Segundo
 Boulevard
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........
 Percentage of
  Total Leased
  Sq. Ft. .......
 Annualized Base
  Rent of
  Expiring
  Leases.........
 Percentage of
  Total
  Annualized Base
  Rent...........
 Number of Leases
  Expiring.......
5115 N. 27th
 Avenue
Phoenix, AZ
 Square Footage
  of Expiring
  Leases.........                                                             130,877
 Percentage of
  Total Leased
  Sq. Ft. .......                                                              100.00%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                          $  640,348
 Percentage of
  Total
  Annualized Base
  Rent...........                                                              100.00%
 Number of Leases
  Expiring.......                                                                   1
12752-12822
 Monarch Street
Garden Grove, CA
 Square Footage
  of Expiring
  Leases.........                                       22,888                 42,608                165,981
 Percentage of
  Total Leased
  Sq. Ft.........                                         8.26%                 15.38%                 59.91%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                   $   78,060             $  136,171             $  592,548
 Percentage of
  Total
  Annualized Base
  Rent...........                                         8.28%                 14.45%                 62.89%
 Number of Leases
  Expiring.......                                            1                      2                      1


                  ---------------------------------------------------------
                     2004       2005        2006        2009       TOTAL
                  ---------- ----------  ----------  ---------- -----------
1230 S. Lewis
 Street
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                57,730                              57,730
 Percentage of
  Total Leased
  Sq. Ft. .......                100.00%                                100%
 Annualized Base
  Rent of
  Expiring
  Leases.........            $  302,930                         $   302,930
 Percentage of
  Total
  Annualized Base
  Rent...........                100.00%                                100%
 Number of Leases
  Expiring.......                     1                                   1
12681/12691 Pala
 Drive
Garden Grove, CA
 Square Footage
  of Expiring
  Leases.........                                                    70,000
 Percentage of
  Total Leased
  Sq. Ft. .......                                                       100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                               $   476,358
 Percentage of
  Total
  Annualized Base
  Rent...........                                                       100%
 Number of Leases
  Expiring.......                                                         1
2270 E. El
 Segundo
 Boulevard
El Segundo, CA
 Square Footage
  of Expiring
  Leases.........                                                       --
 Percentage of
  Total Leased
  Sq. Ft. .......                                                       --
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                       --
 Percentage of
  Total
  Annualized Base
  Rent...........                                                       --
 Number of Leases
  Expiring.......                                                       --
5115 N. 27th
 Avenue
Phoenix, AZ
 Square Footage
  of Expiring
  Leases.........                                                   130,877
 Percentage of
  Total Leased
  Sq. Ft. .......                                                       100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                               $   640,348
 Percentage of
  Total
  Annualized Base
  Rent...........                                                       100%
 Number of Leases
  Expiring.......                                                         1
12752-12822
 Monarch Street
Garden Grove, CA
 Square Footage
  of Expiring
  Leases.........                            45,560                 277,037
 Percentage of
  Total Leased
  Sq. Ft.........                             16.45%                    100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                        $  135,432             $   942,211
 Percentage of
  Total
  Annualized Base
  Rent...........                             14.37%                    100%
 Number of Leases
  Expiring.......                                 1                       5


(1) Represents lease expirations data from October 1, 1996 to December 31, 1996.

81

                                                                             YEAR OF LEASE EXPIRATION
                  ----------------------------------------------------------------------------------------------
                   1996(1)       1997        1998        1999        2000        2001        2002        2003
                  ----------  ----------  ----------  ----------  ----------  ----------  ----------  ----------
4155 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                                                     18,411      16,182                  22,094
 Percentage of
  Total Leased
  Sq. Ft.........                                                      24.67%      21.69%                  29.61%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                 $   37,970  $  141,574              $  145,820
 Percentage of
  Total
  Annualized Base
  Rent...........                                                       8.12%      30.29%                  31.20%
 Number of Leases
  Expiring.......                                                          2           1                       1
4125 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                                                                                         64,891
 Percentage of
  Total Leased
  Sq. Ft.........                                                                                         100.00%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                                                     $  465,407
 Percentage of
  Total
  Annualized Base
  Rent...........                                                                                         100.00%
 Number of Leases
  Expiring.......                                                                                              2
INDUSTRIAL
 SUBTOTALS
 Square Footage
  of Expiring
  Leases.........                             70,000      22,888     210,464     189,667                 252,966
 Percentage of
  Aggregate
  Leased
  Sq. Ft. .......                               5.61%       1.83%      16.86%      15.19%                  20.26%
 Annualized Base
  Rent of
  Expiring
  Leases.........                         $  476,358  $   78,060  $1,594,291  $  918,093              $1,203,775
 Percentage of
  Aggregate
  Annualized Base
  Rent...........                               6.67%       1.09%      22.33%      12.86%                  16.86%
 Number of Leases
  Expiring.......                                  1           1           3           4                       4
PORTFOLIO TOTALS
 Square Footage
  of Expiring
  Leases.........     83,080      61,854     155,138     283,970     360,433     479,050      83,047     270,540
 Percentage of
  Aggregate
  Leased
  Sq. Ft. .......       2.94%       2.19%       5.49%      10.04%      12.75%      16.94%       2.94%       9.57%
 Annualized Base
  Rent of
  Expiring
  Leases......... $1,339,880  $1,225,669  $2,248,912  $4,585,116  $4,894,320  $6,023,398  $1,606,142  $1,550,249
 Percentage of
  Aggregate
  Annualized Base
  Rent...........       3.50%       3.20%       5.88%      11.99%      12.80%      15.75%       4.20%       4.05%
 Number of Leases
  Expiring.......          7          16          20          30          27          24           2           7


                  -----------------------------------------------------------
                     2004        2005        2006        2009        TOTAL
                  ----------  ----------  ----------  ----------  -----------
4155 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                             17,931                   74,618
 Percentage of
  Total Leased
  Sq. Ft.........                              24.03%                     100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                         $  142,080              $   467,444
 Percentage of
  Total
  Annualized Base
  Rent...........                              30.40%                     100%
 Number of Leases
  Expiring.......                                  1                        5
4125 E. La Palma
 Avenue
Anaheim, CA
 Square Footage
  of Expiring
  Leases.........                                                      64,891
 Percentage of
  Total Leased
  Sq. Ft.........                                                         100%
 Annualized Base
  Rent of
  Expiring
  Leases.........                                                 $   465,407
 Percentage of
  Total
  Annualized Base
  Rent...........                                                         100%
 Number of Leases
  Expiring.......                                                           2
INDUSTRIAL
 SUBTOTALS
 Square Footage
  of Expiring
  Leases.........     76,570     248,476     177,311                1,248,342
 Percentage of
  Aggregate
  Leased
  Sq. Ft. .......       6.13%      19.90%      14.22%                     100%
 Annualized Base
  Rent of
  Expiring
  Leases......... $  553,934  $1,485,542  $  830,812              $ 7,140,865
 Percentage of
  Aggregate
  Annualized Base
  Rent...........       7.76%      20.80%      11.63%                     100%
 Number of Leases
  Expiring.......          1           3           3                       20
PORTFOLIO TOTALS
 Square Footage
  of Expiring
  Leases.........    388,061     301,459     262,816      98,243    2,827,691
 Percentage of
  Aggregate
  Leased
  Sq. Ft. .......      13.72%      10.66%       9.29%       3.47%         100%
 Annualized Base
  Rent of
  Expiring
  Leases......... $8,285,041  $2,584,986  $2,609,538  $1,296,270  $38,249,521
 Percentage of
  Aggregate
  Annualized Base
  Rent...........      21.66%       6.76%       6.82%       3.39%         100%
 Number of Leases
  Expiring.......          5           7           8           1          154


(1) Represents lease expirations data from October 1, 1996 to December 31, 1996.

82

TENANT INFORMATION

The Company's tenants include significant corporate and other commercial enterprises representing a range of industries including, among others, satellite communications, manufacturing, entertainment, banking, insurance, telecommunications, health care, computer software, finance, engineering, technology, legal and accounting. The following table sets forth information as to the Company's largest tenants based upon annualized rental revenues for the year ended December 31, 1995:

                                         PERCENTAGE OF
                            TENANT         COMPANY'S
                            ANNUAL           TOTAL                        LEASE
                          BASE RENTAL     BASE RENTAL  INITIAL LEASE    EXPIRATION
                         REVENUE($)(2)    REVENUES(%)     DATE(3)          DATE
                         -------------   ------------- -------------- --------------
Office Tenants(1):
  Hughes Aircraft
   Corporation's Space &
   Communications
   Company(4)...........  $ 9,757,877(5)     25.32        August 1984   January 1999
  Northwest Airlines:
    El Segundo..........    1,313,418         3.41        August 1978  February 2001
    Seattle.............      622,317         1.62           May 1980     April 2005
  Devry, Inc............    1,296,270         3.36      November 1994   October 2009
  McDonnell Douglas
   Corporation..........    1,149,922         2.98      February 1992   January 2002
  SCAN(6)...............      941,325         2.44      February 1996       May 2006
  Zelda Fay Walls(7)....      823,896         2.14        August 1989    August 2000
  Worldcom, Inc.........      674,592         1.75       January 1995  December 1999
  The Walls Group.......      456,220         1.18       October 1991 September 2002
  Olympus America,
   Inc..................      443,375         1.15     September 1993  December 1998
  SITA..................      378,359         0.98          June 1984       May 1999
                          -----------        -----
    Total...............  $17,857,571        46.33
                          ===========        =====
                                         PERCENTAGE OF
                            TENANT         COMPANY'S
                            ANNUAL           TOTAL                        LEASE
                          BASE RENTAL     BASE RENTAL  INITIAL LEASE    EXPIRATION
                         REVENUE($)(2)    REVENUES(%)     DATE(3)          DATE
                         -------------   ------------- -------------- --------------
Industrial Tenants(1):
  Mattel, Inc...........  $ 1,556,321         4.04           May 1990   October 2000
  Festival Markets......      640,348         1.66           May 1991       May 2001
  Allen-
   Bradley/Rockwell.....      639,432         1.66           May 1992     April 1998
  Cannon Equipment......      592,548         1.54        August 1995      July 2003
  MSAS Cargo
   International Inc....      553,934         1.44     September 1994    August 2004
  Ace Medical...........      553,300         1.44         April 1995     April 2006
  Furon, Inc. ..........      543,180         1.41      February 1990      July 2005
  Rank Video Services...      476,358         1.24       October 1984       May 1998
  Household Finance
   Corporation..........      319,199         0.83          June 1993  November 2003
  Extron................      302,930         0.79      February 1995   January 2005
                          -----------        -----
    Total...............  $ 6,177,550        16.05
                          ===========        =====


(1) Table excludes the lease with LACTC (total annual base rent of $449,935) which expired on April 30, 1996, the lease with Cerplex Group, Inc./Incert (total annual base rent of $337,530) which expired on June 30, 1996 and the lease with Key Bank of Washington (total annual base rent of $667,587) which expired on December 31, 1996.
(2) Determined in accordance with GAAP.
(3) Represents date of first relationship between tenant and the Kilroy Group.
(4) Includes Hughes Space & Communication's leases at Kilroy Airport Center at El Segundo of (i) 96,133 and 11,556 net rentable square feet which expire in October 2001, (ii) 286,151 net rentable square feet which expires in July 2004 and (iii) 100,978 net rentable square feet which expires in January 1999.

(footnotes continued on next page)

83

(5) Tenant annual base rental revenue for Hughes Space & Communications gives pro forma effect to the recent extension of the tenant lease with respect to 96,133 rentable square feet of office space located at 2250 E. Imperial Highway (along with 11,556 rentable square feet located at 2240 E. Imperial Highway) as if such lease renewal had occurred on January 1, 1995. See "Business and Properties--Kilroy LAX."
(6) Tenant executed leases during 1995 representing approximately 44,825 square feet effective on February 15, 1996. Base rental revenue figure included on a contract basis.
(7) The term of this lease has been extended to 2007 and, effective February 1, 1997, annual base rent under this lease will be $672,000.

OFFICE PROPERTIES

All but two of the Office Properties are Class A office buildings. Each of the Kilroy LAX, Kilroy Long Beach and SeaTac (each as defined) Office Properties was designed and developed to above-standard specifications to accommodate the long-term needs of tenants and include features such as extra- floor loading capacity and extra-high ceilings. Each of the Kilroy LAX, Kilroy Long Beach and SeaTac Office Properties also was designed with an emphasis on long-term operating efficiency and tenant comfort and includes above-standard climate controls, on-site management and security, covered parking, heliports and retail services, all in professionally landscaped environments. In addition, each of the Kilroy LAX and Kilroy Long Beach Office Properties offers tenants redundant telecommunications capability and utility leads. The Office Properties range in size from two to 12 stories and are easily accessible from major highways and all but two (Westlake Plaza and the Office Property located at the La Palma Business Center) are easily accessible from major airports. Management believes that as a result of these factors the Office Properties in the Southern California Area achieve among the highest rent, occupancy and tenant retention rates when compared to other properties within their respective submarkets and in neighboring submarkets. Management believes that the location, quality of construction and amenities at the complexes as well as the Company's reputation for providing a high level of tenant service have enabled the Company to attract and retain a national tenant base.

Kilroy LAX. The Company developed, owns, leases and manages three Office Properties at Kilroy Airport Center at El Segundo ("Kilroy LAX"), a Class A high-rise, multi-tenant corporate office complex situated in what the Company considers to be the premier location in El Segundo immediately adjacent to Los Angeles International Airport ("LAX"), the new light rail system servicing Los Angeles County and the new I-105 Freeway with a freeway off-ramp and freeway on-ramp providing immediate access to and from the project's parking facilities. Kilroy LAX was built in 1983 to high quality specifications to address the anticipated demands of the submarket's aerospace and high technology tenants. The Company believes Kilroy LAX has the premier location in the El Segundo office submarket for a number of reasons, including:
(i) unobstructed views of LAX, West Los Angeles and Downtown Los Angeles; (ii) excellent access to LAX, the new I-105 Freeway and the new light rail system;
(iii) close proximity to corporate office users including Hughes Space & Communications and its satellite manufacturing facility, and other related enterprises such as DirectTV; and (iv) for tenants with their names on the Property, visibility to freeway and airline travelers.

The complex is comprised of two 12-story towers and a 13-level parking structure with two floors of office space on top, encompassing an aggregate of approximately 701,000 rentable square feet, of which 93.3% was leased as of September 30, 1996. Kilroy LAX features fiber optic/telecommunications dual redundancy (one of the few properties in Southern California so equipped) and multiple lead-lines for both water and power, thereby mitigating the risk of temporary loss of such services to the facility. The Property was designed and constructed with above-standard floor loadings and floor-to-ceiling heights to accommodate the weight and raised floors requirements of computer and other equipment. The facility is climate controlled in smaller areas which, while increasing tenant comfort, allows for separate thermostat controls for areas housing temperature sensitive equipment and reduces costs for after-hour operations. The facility was designed toward tenant efficiency and convenience and features an above-standard ratio of elevators to rentable square feet and provides 24-hour on-site security and management, private dual heliports, shuttle service to LAX and on-site retail, banking and dining facilities. In addition, the two 12-story towers are joined by an atrium and are professionally landscaped creating a pleasant environment. In addition, the facility has been recognized by the local utility for its energy efficient heating, ventilating and air conditioning systems which reduce operating costs for both the Company and its

84

tenants. Management believes because of these and other high quality features, Kilroy LAX continues to attract long-term major corporate tenants at rates above those offered by other facilities in the El Segundo and neighboring submarkets. The occupancy rates for Kilroy LAX as of the years ended December 31, 1993 through 1995, and the nine-month period ended September 30, 1996, were 90.8%, 91.6%, 92.1% and 93.3%, respectively.

Major tenants of the facility include Hughes Space & Communications (the Company's largest tenant), the Federal Aviation Administration and Realtime Associates. Hughes Space & Communications has been a tenant at Kilroy LAX since its opening and, over the past five years, has consolidated operations into its owned facilities in El Segundo (which includes its satellite manufacturing facility) and into leased facilities at Kilroy LAX which also serves as its headquarters. In addition, Hughes Space & Communications has invested substantial amounts in tenant improvements, including approximately $3.3 million during the year ended December 31, 1994 and $23.5 million since 1984, and repeatedly has renewed leases at the facilities, including one lease for approximately 101,000 rentable square feet which has been renewed twice. Hughes Space and Communications is a major employer and owner of technical facilities in El Segundo, including facilities for the development of satellite technology and its applications, such as DirecTV.

Because the book value of the Office Property located at 2240 E. Imperial Highway will be in excess of 10% of the Company's total assets, additional information regarding this Property is presented below. The information presented below gives pro forma effect to the recent extension of the tenant lease with Hughes Space & Communications with respect to this Office Property as if such lease renewal had occurred on January 1, 1995.

The Office Property located at 2240 E. Imperial Highway had an occupancy rate of 100.0% for each of the years ended December 31, 1991 through 1995. As of September 30, 1996, Hughes Space & Communications occupied approximately 94.6% of the Property's net rentable square feet under two leases. Under the principal lease for this space, Hughes Space & Communications commenced occupancy of 100,978 square feet on August 11, 1986 and renewed the lease on February 1, 1989 and again on June 1, 1994. In connection with the latter renewal, Hughes made a one time payment of $4,000,000 to the Company in consideration of a lease amendment to relieve Hughes Space & Communications of the obligation to remove certain tenant improvements upon termination of the lease. The current lease term under this lease expires on January 31, 1999, subject to a five-year option to renew at fair market value, but not less than $15.84 per annum per net rentable square foot, on a triple net basis. Hughes Space & Communications also leases 11,556 rentable square feet (along with the 96,133 rentable square feet located at 2250 E. Imperial Highway) under a second lease which expires October 31, 2001, at an annualized triple net base rental rate of $14.04 and, for the first year of the lease term, the tenant's allocable share of operating costs shall not exceed $7.32 per rentable square foot. The lease also is subject to a five-year option to renew at fair market value, adjusted bi-annually for CPI adjusted increases in base rent. The total annual rental income per net rentable square foot for the years ended December 31, 1991 through December 31, 1995 was $23.17, $24.42, $25.22, $17.15 and $11.83, respectively.

85

The following table sets forth for such Property for each of the ten years following the date of Offering (i) the number of tenants whose leases will expire, (ii) the total net rentable square feet covered by such leases,
(iii) the percentage of total leased net rentable square feet represented by such leases, (iv) the annual base rent represented by such leases and (v) the average annual rent per net rentable square foot represented by such leases.

                                                   PERCENTAGE OF
                                                   TOTAL LEASED                           AVERAGE ANNUAL
                                                   NET RENTABLE                              RENT PER
                                    NET RENTABLE    SQUARE FEET                            NET RENTABLE
        YEAR OF          NUMBER OF SQUARE FOOTAGE   REPRESENTED                            SQUARE FOOT
         LEASE            LEASES     SUBJECT TO     BY EXPIRING  ANNUAL BASE RENT UNDER   REPRESENTED BY
       EXPIRATION        EXPIRING  EXPIRING LEASES   LEASES(%)   EXPIRING LEASES ($)(1) EXPIRING LEASES($)
       ----------        --------- --------------- ------------- ---------------------- ------------------
10/31/96-12/31/96.......      0            --            --                   --                 --
1997....................      0            --            --                   --                 --
1998....................      0            --            --                   --                 --
1999....................      1(2)     100,978          86.4           $1,085,716             $10.75
2000....................      0            --
2001....................      2(3)      15,898          13.6              196,670              12.37
2002....................      0            --            --                   --                 --
2003....................      0            --            --                   --                 --
2004....................      0            --            --                   --                 --
2005....................      0            --            --                   --                 --
                            ---        -------         -----           ----------
    Totals..............      3        116,876(4)      100.0           $1,282,386             $10.97
                            ===        =======         =====           ==========


(1) Determined based upon aggregate base rent to be received over the term divided by the term in months multiplied by 12, including all leases dated on or before September 30, 1996.
(2) The terms of this lease are described in the text preceding this table.
(3) The terms of a lease representing 11,556 rentable square feet are described in the text preceding this table.
(4) The aggregate square footage reflected in each of the respective leases differs from the actual aggregate square footage for this Property of 118,933 as shown on the table under the caption "The Office and Industrial Properties." Subsequent to the execution of the leases, the Property was remeasured at a larger aggregate number of square feet than is reflected in the executed leases.

The Company's tax basis in the Property for federal income tax purposes as of December 31, 1995 was approximately $4.1 million (net of accumulated depreciation and reductions in depreciable basis). The Property is depreciated using the modified accelerated cost recovery system straight-line method, based on an estimated useful life ranging from 31 1/2 years to 39 years, depending upon the date of certain capitalized improvements to the Property. For the year ended December 31, 1995, the estimated average depreciation rate for this Property under the modified accelerated cost recovery system was 4.3%. For the 12-month period ending September 30, 1996, the Company was assessed property taxes on this Property at an effective annual rate of approximately 1.0%. Property taxes on this Property for the 12-month period ending September 30, 1996 totaled approximately $130,000. Management does not believe that any capital improvements made during the 12-month period immediately following the Offering should result in an increase in annual property taxes.

Because the gross revenues for the Office Property located at 2250 E. Imperial Highway for the year ended December 31, 1995 were in excess of 10% of the aggregate gross revenues for all of the Properties, additional information regarding this Property is presented below. The information presented below gives pro forma effect to the recent extension of the tenant lease with Hughes Space & Communications with respect to this Office Property as if such lease renewal had occurred on January 1, 1995.

The Office Property located at 2250 E. Imperial Highway had an occupancy rate of 84.0%, 82.5%, 77.8%, 79.8% and 80.9% as of the years ended December 31, 1991 through 1995, respectively. As of September 30, 1996, Hughes Space & Communications occupied 33% of the Property's net rentable square feet. The Property's other tenants include companies engaged in the communications, technology, transportation and healthcare industries. Hughes Space & Communications commenced occupancy of 96,133 rentable square feet on

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November 1, 1986 and has entered into an agreement to renew this space (along with the 11,556 square feet located at 2240 E. Imperial Highway) through October 31, 2001, at a triple net annual base rental rate of $14.04 per square foot and, for the first year of the lease term, the tenant's allocable share of operating costs shall not exceed $7.32 per rentable square foot. The lease also is subject to a five-year option to renew at fair market value, adjusted bi-annually for CPI increases in base rent. The total annual rental income per net rentable square foot for the years ended December 31, 1991 through December 31, 1995 was $17.82, $18.73, $19.62, $18.89 and $18.86, respectively. The following table sets forth for such Property for each of the ten years following the date of the Offering (i) the number of tenants whose leases will expire, (ii) the total net rentable square feet covered by such leases, (iii) the percentage of total leased net rentable square feet represented by such leases, (iv) the annual base rent represented by such leases and (v) the average annual rent per net rentable square foot represented by such leases.

                                                    PERCENTAGE OF
                                                    TOTAL LEASED                          AVERAGE ANNUAL
                                                    NET RENTABLE                             RENT PER
                                     NET RENTABLE    SQUARE FEET                           NET RENTABLE
                          NUMBER OF SQUARE FOOTAGE   REPRESENTED       ANNUAL BASE         SQUARE FOOT
                           LEASES     SUBJECT TO     BY EXPIRING       RENT UNDER         REPRESENTED BY
YEAR OF LEASE EXPIRATION  EXPIRING  EXPIRING LEASES LEASES(%)(1)  EXPIRING LEASES($)(2) EXPIRING LEASES($)
- ------------------------  --------- --------------- ------------- --------------------- ------------------
10/1/96-12/31/96........       1          1,317           0.6          $   24,496             $18.60
1997....................       3          4,385           1.9              83,025              18.93
1998....................       6         23,033          10.1             464,705              20.18
1999....................       4         29,148          12.7             695,821              23.87
2000....................       2         18,201           8.0             302,853              16.64
2001....................       3        112,715          49.3           1,653,035              14.67
2002....................       1         18,517           8.1             456,220              24.64
2003....................       0            --            --                  --                 --
2004....................       2         21,418           9.3             485,244              22.66
2005....................       0            --            --                  --                 --
                             ---        -------         -----          ----------
    Totals..............      22        228,734         100.0          $4,165,399             $18.21
                             ===        =======         =====          ==========


(1) Excludes all space vacant as of December 31, 1995 unless a lease for a replacement tenant has been dated on or before September 30, 1996.
(2) Determined based upon aggregate base rent to be received over the term divided by the term in months multiplied by 12, including all leases dated on or before September 30, 1996. Certain leases became effective subsequent to September 30, 1996.

The Company's tax basis in the Property for federal income tax purposes as of December 31, 1995 was approximately $2.0 million (net of accumulated depreciation and reductions in depreciable basis), and was fully depreciated for federal tax purposes. For the 12-month period ending September 30, 1996, the Company was assessed property taxes on this Property at an effective annual rate of approximately 1.0%. Property taxes on this Property for the 12- month period ending September 30, 1996 totaled approximately $240,000. Management does not believe that any capital improvements made during the 12- month period immediately following the Offering should result in an increase in annual property taxes.

Because the 1995 gross revenues for the Office Property located at 2260 E. Imperial Highway were in excess of 10% of the aggregate gross revenues for all of the Properties, additional information regarding this Property is presented below.

The Office Property located at 2260 E. Imperial Highway had an occupancy rate of 100.0% for the years ended December 31, 1991 through 1995. As of September 30, 1996, Hughes Space & Communications occupied 100.0% of the Property's net rentable square feet. Hughes Space & Communications commenced occupancy of the entire building on August 1, 1984. This lease runs through July 31, 2004 with CPI adjusted increases in base rent every two years. The next CPI adjustment is scheduled to occur on August 1, 1998 and provides for an increase in base rent to the extent that such CPI adjustment exceeds a minimum floor of 1.86% compounded

87

annually. The remaining CPI adjustments scheduled for August 1, 2000 and August 1, 2002, respectively, provide for similar increases to the extent that the CPI adjustment exceeds a minimum floor of 3% compounded annually. The total annual rental income per net rentable square foot was $25.35, $26.16, $26.66, $24.59 and $24.59 for the years ended December 31, 1991 through December 31, 1995, respectively. The following table sets forth for such Property for each of the ten years following the date of Offering (i) the number of tenants whose leases will expire, (ii) the total net rentable square feet covered by such leases, (iii) the percentage of total leased net rentable square feet represented by such leases, (iv) the annual base rent represented by such leases and (v) the average annual rent per net rentable square foot represented by such leases.

                                                    PERCENTAGE OF
                                                    TOTAL LEASED                          AVERAGE ANNUAL
                                                    NET RENTABLE                             RENT PER
                                     NET RENTABLE    SQUARE FEET                           NET RENTABLE
                          NUMBER OF SQUARE FOOTAGE   REPRESENTED       ANNUAL BASE         SQUARE FOOT
                           LEASES     SUBJECT TO     BY EXPIRING       RENT UNDER         REPRESENTED BY
YEAR OF LEASE EXPIRATION  EXPIRING  EXPIRING LEASES   LEASES(%)   EXPIRING LEASES($)(1) EXPIRING LEASES($)
- ------------------------  --------- --------------- ------------- --------------------- ------------------
10/01/96-12/31/96.......       0            --            --           $      --              $  --
1997....................       0            --            --                  --                 --
1998....................       0            --            --                  --                 --
1999....................       0            --            --                  --                 --
2000....................       0            --            --                  --                 --
2001....................       0            --            --                  --                 --
2002....................       0            --            --                  --                 --
2003....................       0            --            --                  --                 --
2004....................       1(2)     286,151         100.0          $7,160,207             $25.02
2005....................       0            --            --                  --                 --
                             ---        -------         -----          ----------
    Totals..............       1        286,151(3)      100.0          $7,160,207             $25.02
                             ===        =======         =====          ==========


(1) Determined based upon aggregate base rent to be received over the term divided by the term in months multiplied by 12, including all leases dated on or before September 30, 1996.
(2) The terms of this lease are described in the text preceding this table.
(3) The square footage reflected in the lease differs from the actual square footage for this Property of 291,187 as shown on the table under the caption "The Office and Industrial Properties." Subsequent to the execution of the lease, the Property was remeasured at a larger aggregate number of square feet than is reflected in the executed lease.

The Company's tax basis in the Property for federal income tax purposes as of December 31, 1995 was approximately $2.0 million (net of accumulated depreciation and reductions in depreciable basis), and was fully depreciated for federal tax purposes. For the 12-month period ending September 30, 1996, the Company was assessed property taxes on this Property at an effective annual rate of approximately 1.0%. Property taxes on this Property for the 12- month period ending September 30, 1996 totaled approximately $275,000. Management does not believe that any capital improvements made during the 12- month period immediately following the Offering should result in an increase in annual property taxes.

Kilroy Long Beach. The Company developed, owns, leases and manages the three Office Properties which comprise Phase II of Kilroy Airport Center Long Beach ("Kilroy Long Beach Phase II"), part of a planned four-phase, 53-acre Class A corporate office headquarters, business park and retail and entertainment center strategically located adjacent to the San Diego freeway (Interstate 405, the major coastal north-south highway in Southern California between Los Angeles and Orange Counties) (the "I-405 Freeway") and immediately adjacent to the Long Beach Airport. The Company has sole development rights for the remaining 24 developable acres. Upon consummation of the Offering, the Company also will own the two office buildings comprising Kilroy Long Beach Phase I ("Kilroy Long Beach Phase I") which were developed by the Company and which have been leased and managed by the Company since their inception. See "-- Acquisition Properties--Kilroy Long Beach Phase I." Kilroy Long Beach Phase II includes an eight-story and a six-story office building, and a multi-level parking structure with retail facilities on the ground floor, encompassing an aggregate of approximately 395,000 net rentable square feet, of which 88.4% was leased as of September 30, 1996. The

88

facility is the only GTE SmartPark in Los Angeles County and offers tenants an array of advanced telecommunications functions through a pre-laid fiber optic network, emergency backup loop and ISDN interfaces. The facility also includes state-of-the-art mechanical and electrical systems designed to accommodate the highest tenant demands including above-standard floor-to-ceiling heights and floor loading and four high-speed passenger elevators. Each of the office structures offers efficient 28,000 square foot floors. Other amenities include a spacious lobby with an atrium, and a central courtyard with a fountain and pedestrian arcade. The facility also features 24-hour on-site security and management, a fitness center, group conference facilities, helipad facilities, and various retail and business services including banking facilities, dining facilities and printer services. The occupancy rates for Kilroy Long Beach Phase II as of the years ended December 31, 1993 through 1995, and the nine month period ended September 30, 1996, were 64.8%, 78.7%, 76.5% and 88.3%, respectively. Major tenants include AIG Claim Services, Inc., Assistance in Marketing, Inc., CompuServe, Inc., Employer's Health Insurance, Co., GTE Directories Sales Corporation, Great Northern Insured Annuities Corp., Great Western Bank, HealthNet, Mutual of America Life Insurance Company, North American Title Company, The Prudential Insurance Company of America, R.L. Polk & Company, SCAN Health Plan, Senn-Delaney Leadership Consulting Group, Inc., 20th Century Industries, UniCare Financial Corporation, Unihealth and Zelda Fay Walls.

Kilroy Airport Center Long Beach was developed in response to a desire by the City of Long Beach to promote development in the airport area. Phase I of the project, two office buildings encompassing approximately 225,000 rentable square feet, was developed by the Company in 1987 and was sold in 1993. The Company has entered into an agreement to reacquire the Phase I Office Properties. As of September 30, 1996 the Phase I Office Properties were 96.6% leased to eight tenants with total annual rental income per leased net rentable square foot of $15.67 (calculated on the basis of base rent of signed leases at September 30, 1996, adjusted for contractual increases in base rent in effect during the 12-month period ending September 30, 1996). Major tenants include McDonnell Douglas Corporation, Olympus America, Inc. and Devry, Inc. See "--Acquisition Properties--Kilroy Long Beach Phase I." The Company has overseen and continues to oversee all leasing and management of Phase I.

Kilroy Long Beach Phase II was developed by the Company in 1989/1990 and encompasses an aggregate of approximately 395,000 net rentable square feet. Phases III and IV are planned for future development. See "--Development, Leasing and Management Activities--Kilroy Airport Center Long Beach."

Kilroy Airport Center Long Beach is subject to three long-term ground leases under which the Company is ground lessee (assuming the assignment to the Company of the approximately 14-acre parcel in connection with the acquisition of Kilroy Long Beach Phase I). The City of Long Beach is the ground lessor with respect to Kilroy Long Beach Phases I through III and the Board of Water Commissioners of the City of Long Beach, acting on behalf of the City of Long Beach, is the ground lessor with respect to Kilroy Long Beach Phase IV. The basic term under each of the ground leases expires on July 17, 2035. Primary rent under the leases for Kilroy Long Beach Phases I, II, III and IV is currently approximately $338,000 per year, $295,000 per year, $75,000 per year and $76,764 per year, respectively, with such amounts adjusted periodically to take account of changes in the fair market rental value of the land underlying each lease.

Because the book value of the Office Property located at 3780 Kilroy Airport Way will be in excess of 10% of the Company's total assets, additional information regarding this Property is presented below.

The Office Property located at 3780 Kilroy Airport Way had an occupancy rate of 70.2%, 70.5%, 69.1%, 78.6% and 63.6% as of the years ended December 31, 1991 through 1995, respectively. As of September 30, 1996, SCAN Health Plan, a group health insurer, and Zelda Fay Walls, an operator of executive office suites, occupied approximately 20.4% and 12.7%, respectively, of the Property's net rentable square feet. The Property's other tenants include companies engaged in the insurance, healthcare, finance, high technology, law and accounting industries. Base rent under the SCAN Health Plan lease is $941,325 per year. The lease expires on August 31, 2000, subject to two successive five-year options to renew. Base rent under the Zelda Fay Walls lease

89

is currently $823,896 per year although the tenant has been paying only approximately $640,200 since August 1993 and the balance is expensed quarterly by the Company as an increase to its bad debt reserve. Effective February 1, 1997, annual base rent under the lease will be $672,000, and the term of the lease has been extended to 2007, subject to a five-year option to renew. The total annual rental income per net rentable square foot for the years ended December 31, 1991 through 1995 was $13.02, $17.53, $19.76, $20.54 and $18.55, respectively. The following table sets forth for such Property for each of the ten years following the date of Offering (i) the number of tenants whose leases will expire, (ii) the total net rentable square feet covered by such leases, (iii) the percentage of total leased net rentable square feet represented by such leases, (iv) the annual base rent represented by such leases and (v) the average annual rent per net rentable square foot represented by such leases.

                                                    PERCENTAGE OF
                                                    TOTAL LEASED                          AVERAGE ANNUAL
                                                    NET RENTABLE                             RENT PER
                                     NET RENTABLE    SQUARE FEET                           NET RENTABLE
                          NUMBER OF SQUARE FOOTAGE   REPRESENTED       ANNUAL BASE         SQUARE FOOT
                           LEASES     SUBJECT TO     BY EXPIRING       RENT UNDER         REPRESENTED BY
YEAR OF LEASE EXPIRATION  EXPIRING  EXPIRING LEASES LEASES(%)(1)  EXPIRING LEASES($)(2) EXPIRING LEASES($)
- ------------------------  --------- --------------- ------------- --------------------- ------------------
10/1/96-12/31/96........      --            --            --           $      --              $  --
1997....................       4         22,469          11.5             532,872              23.72
1998....................       1          2,088           1.1              47,606              22.80
1999....................       2          4,339           2.2              89,709              20,68
2000....................       7         74,093          37.8           1,816,896              24.52
2001....................       5         28,251          14.4             638,222              22.59
2002....................      --            --            --                  --                 --
2003....................       1          9,439           4.8             209,299              22.17
2004....................       1          3,922           2.0              85,656              21.84
2005 and beyond.........       2         51,290          26.2           1,077,090              21.00
                             ---        -------        ------          ----------
    Totals..............      23        195,891        100.00          $4,497,350             $22.96
                             ===        =======        ======          ==========


(1) Excludes all space vacant as of December 31, 1995 unless a lease for a replacement tenant has been dated on or before September 30, 1996.
(2) Determined based upon aggregate base rent to be received over the term divided by the term in months multiplied by 12, including all leases dated on or before September 30, 1996. Certain leases became effective subsequent to September 30, 1996.

The Company's tax basis in the Property for federal income tax purposes was $11.4 million (net of accumulated depreciation) as of December 31, 1995. The Property is depreciated using the modified accelerated cost recovery system straight-line method, based on an estimated useful life ranging from 31 1/2 years to 39 years, depending upon the date of certain capitalized improvements to the Property. For the year ended December 31, 1995, the estimated average depreciation rate for this Property under the modified accelerated cost recovery system was 3.4%. For the 12-month period ending September 30, 1996, the Company was assessed property taxes on this Property at an effective annual rate of approximately 1.2%. Property taxes on this Property for the 12-month period year ending September 30, 1996 totaled $175,000. Management does not believe that any capital improvements made during the 12-month period immediately following the Offering should result in an increase in annual property taxes.

SeaTac Office Center at Seattle-Tacoma International Airport. The Kilroy Group developed and operates the SeaTac Office Center ("SeaTac"), south of Seattle in SeaTac, Washington, a Class A office development in the Southend submarket of the Puget Sound region. SeaTac is comprised of two 12-story towers (constructed in 1977 and 1980, respectively) and a 4-level office and garage structure with two floors of office space on top (constructed in 1980), all with views of the Olympic and Coastal mountain ranges. The site is located directly across from the Seattle-Tacoma International Airport. The facility currently contains an aggregate of approximately 530,000 square feet of office space. Current zoning permits up to an additional 500,000 square feet of development. The facility features 24-hour on-site security and management, parking for over 1,900 vehicles, computer training and consultation, travel agencies and a 24-hour restaurant. As of September 30, 1996, SeaTac had approximately 308,000 rentable square feet of available office space. Major tenants include First

90

Nationwide Mortgage Corporation, Lynden, Inc., National Chemsearch, Northwest Airlines, Inc., Rayonier, Inc., Seattle-First National Bank and Transamerica Financial Services, Inc.

SeaTac is situated on an approximately 17-acre site subject to two long-term ground leases and an airspace lease. The initial term of the ground leases runs through December 31, 2032, and may be extended for an additional period of thirty years. Payments under the ground leases are subject to adjustment for increases in the CPI every five years. Payments under the airspace lease are made monthly. Aggregate payments under the two ground leases and the airspace lease for the year ended December 31, 1995 totaled approximately $317,500. As of September 30, 1996, the SeaTac Properties were encumbered by a first mortgage loan having an outstanding principal balance of $20,162,000. The loan bears interest at a rate of 9.75% per year and is scheduled to mature on May 15, 2001. See "Note 4. Debt" to the Combined Financial Statements of the Kilroy Group.

INDUSTRIAL PROPERTIES

Like the Office Properties, the Industrial Properties developed by the Company (the Industrial Properties other than the Acquisition Properties) were designed and developed to provide above-standard quality and meet the long- term needs of tenants. The Company was among the first Southern California developers to air-condition its Industrial Properties, increasing each facility's multidimensional use while providing environments for increased tenant operating efficiency and comfort. While most of the buildings are occupied by a single tenant, the Industrial Properties developed by the Company were designed for multi-tenant operations and can be reconfigured for such use. The Industrial Properties, all but one of which are located in Southern California, are primarily comprised of single-story, tilt-up concrete buildings ranging in size from approximately 57,000 to 277,000 square feet. The Industrial Properties feature high-tech assembly areas and supporting office space for management and administrative functions.

The Industrial Property leases are written on a triple net basis with initial terms of three to eleven years and options to renew for up to an additional five years at the then current fair market value. The leases generally provide for rent increases based on the applicable regional CPI or contain specific contractual increases. The leases do not contain purchase options.

Certain of the Industrial Properties can support additional development and the Company presently is planning to develop in the next two years, subject to substantial pre-leasing, approximately 105,000 square feet of additional leasable area. The Company anticipates that any such development would be funded with amounts available under the Credit Facility. There can be no assurance, however, that the Company will be able to successfully develop any of the Industrial Properties, or obtain financing for any such development on terms favorable to the Company. See "Risk Factors--Real Estate Financing Risks" and "--No Limitation on Debt."

DEVELOPMENT, LEASING AND MANAGEMENT ACTIVITIES

Since 1947, the Company and its affiliates have developed millions of square feet of office and industrial space, including high technology facilities, primarily located in Southern California, for its own portfolio and for third parties. Development activities include site selection, land entitlement, project design and construction, build-to-suit activities and tenant renovations. The Company has successfully developed numerous sophisticated development projects for some of the nation's most prominent corporations both in Southern California and around the country. The Company's extensive experience has enabled it to form key alliances with major corporate tenants, municipalities and landowners in Southern California. The Company's relationships with tenants and users has enabled it to receive fees in connection with its role as developer of various projects, or, in the case of Kilroy Long Beach, to develop the land for its own account where such development will result in a favorable risk-adjusted return on investment. In connection with the Formation Transactions, the Company will succeed to the Kilroy Group's rights in and to the Development Properties.

The Company or the Operating Partnership will be the manager of the Properties and may provide building management services for independent building owners for terms that vary in length but which generally provide

91

for management fees of 4% to 5% of collected revenue and may also provide for reimbursement of expenses. The Services Company will provide development services for the Company and the Operating Partnership, as well as for third parties, at market rates.

The following is a description of the Development Properties as presently contemplated.

Kilroy Airport Center Long Beach. In conjunction with the Company's role as master ground lessee of Kilroy Long Beach, the Company manages all ongoing leasing and development activities for the four-phase, approximately 53-acre office and retail development project, including sole development rights to the approximately 24 remaining developable acres. To date the Company has developed Phases I and II. See "--Office Properties--Kilroy Airport Center Long Beach" and "Acquisition Properties." Current development activities are focused on Phase III of the project ("Kilroy Long Beach Phase III") which will be developed and owned by the Company. Kilroy Long Beach Phase III presently is contemplated to initially include a seven-story office building with approximately 186,000 rentable square feet and a five-story office building with approximately 132,000 rentable square feet. In addition, Kilroy Long Beach Phase III may be developed, subject to site plan approval by the City of Long Beach, to include an additional office building with up to 150,000 rentable square feet of space. The Company is currently in discussions with several prospective tenants for office space presently planned to be included in Kilroy Long Beach Phase III. Development of Kilroy Long Beach Phase III is subject to substantial predevelopment leasing activity and, therefore, the timing for the commencement of development is uncertain.

Kilroy Long Beach also is planned to include Phase IV ("Kilroy Long Beach Phase IV"), which will be developed and owned by the Company. Kilroy Long Beach Phase IV presently is contemplated to include an aggregate of up to 550,000 rentable square feet of office and retail space including high quality retail and specialty shops, sit-down and convenience restaurants and, subject to site-plan approval by the City of Long Beach, a multitheater and virtual reality entertainment center. Development of Kilroy Long Beach Phase IV is subject to substantial predevelopment leasing activity and, therefore, the timing for the commencement of development is uncertain.

To date the Company has invested approximately $8.8 million in infrastructure improvements which are in place for Kilroy Long Beach Phases III and IV and has available an additional approximately $2.6 million of revenue bond proceeds held by the City of Long Beach which the Company believes is sufficient to provide for further traffic mitigation improvements, if any, which may be required by the City in connection with the future development. Because of the over 900,000 aggregate rentable square feet entitled at Kilroy Long Beach Phases III and IV, and the significant infrastructure improvements already in place, the Company believes that Kilroy Long Beach offers substantial opportunity for tenant expansion from a location servicing both Los Angeles and Orange Counties. See "--Office Properties-- Kilroy Long Beach."

Kilroy Long Beach Phase III and Phase IV will be developed by the Company or the Services Company for the benefit of the Company. Prior to the Formation Transactions, the Kilroy Group and its affiliates acquired construction materials at a cost of approximately $6.5 million in connection with the development of Kilroy Long Beach Phase III. These construction materials will not be contributed to the Company and the Company will have no obligation to purchase the materials from the Kilroy Group or to in any way use the materials in the development and completion of the project. Any decision on the part of the Company to purchase the materials from the Kilroy Group in the future will be determined by a majority of the Independent Directors.

Kilroy Airport Center Long Beach is subject to three long-term ground leases under which the Company is ground lessee. The City of Long Beach is the ground lessor with respect to Kilroy Long Beach Phase III and the Board of Water Commissioners of the City of Long Beach, acting on behalf of the City of Long Beach, is the ground lessor with respect to Kilroy Long Beach Phase IV. The basic term under each of the ground leases expires on July 17, 2035. Primary rent under the leases for Kilroy Long Beach Phases III and IV is currently approximately $75,000 per year and $76,764 per year, respectively, with such amounts adjusted periodically to take account of changes in the fair market rental value of the land underlying each lease.

92

Riverside Judicial Center. In a unique "public-private partnership" with the City of Riverside Redevelopment Agency and the County of Riverside, the Company has substantially completed for a fee a comprehensive master planning, design, entitlement and development effort for the initial phase of a multi- jurisdictional judicial center complex (the "Riverside Judicial Center") in downtown Riverside that is expected to serve the entire greater Riverside and San Bernardino area. Riverside is located approximately 56 miles east of Los Angeles. The project currently includes a United States Bankruptcy Court and administrative complexes. In addition, future development at the site may also include a United States District Court. Construction of the Riverside Judicial Center began in February 1996. Upon consummation of the Formation Transactions, the Services Company will be assigned the Development Management Agreement in connection with the project.

Northrop Grumman. The Company has been retained on a fee basis by Northrop Grumman Corporation ("Northrop Grumman") to undertake a comprehensive, multi- phased effort to analyze, entitle and manage the future reuse, planning, entitlement, marketing and disposition of the approximately 200-acre property located in the City of Pico Rivera, located approximately 13 miles east of Los Angeles, which currently serves as Northrop Grumman's headquarters for activities related to the U.S Air Force's B-2 "Stealth" Bomber Program. Early stages of the project are underway, including the execution of a Memorandum of Understanding with the City of Pico Rivera and a community outreach program and submission of a conceptual reuse plan to the City of Pico Rivera. The agreement runs through February 15, 1997.

ACQUISITION PROPERTIES

The Company has entered into agreements to acquire from non-affiliated third parties four office properties and two industrial properties upon consummation of the Offering, and will acquire one Industrial Property which was purchased from a non-affiliated third party by KI on behalf of the Company prior to consummation of the Offering and will be assigned to the Company upon consummation of the Offering (collectively, the "Acquisition Properties"). In the event one or more of the Acquisition Properties are purchased, the Company expects to finance the acquisition cost (approximately $49.0 million in the aggregate) with long-term borrowings under the $84.0 Million Loan, new mortgage financing and/or the proceeds of the Offering. Acquisition of each of these properties is subject to the satisfactory completion of certain closing conditions. Although each of the acquisitions is expected to be completed prior to or concurrent with consummation of the Offering there is no assurance that any of the Acquisition Properties will be acquired. In addition, concurrent with the Offering the Company will assume and repay out of the Offering proceeds the indebtedness incurred by KI (on behalf of the Company) to acquire the Industrial Property located at 12752-12822 Monarch Street, Garden Grove, California (including expenses at closing). Unless otherwise indicated, all calculations and information contained in this Prospectus give pro forma effect to the acquisition of the Acquisition Properties.

Kilroy Long Beach Phase I. Two of the Acquisition Properties comprise Kilroy Long Beach Phase I, a Class A office complex which includes a two-story office building and a combination two/three-story office building encompassing an aggregate of 225,000 rentable square feet. The Company has entered into an agreement for the purchase of these Office Properties for an aggregate purchase price of $23.5 million. Kilroy Long Beach Phase I was developed by the Company in 1987 and sold by the Company to the current owner, a non- affiliated third party, in 1993. The Company has overseen all leasing and management activity at the property since its development. As of December 31, 1995, the properties were 96.6% leased to eight tenants at an average annual base rent per net rentable square foot of $15.90. See "--Office Properties-- Kilroy Long Beach."

Thousand Oaks Office Property. Another Acquisition Property is a stand-alone three-story Class A office property located in Thousand Oaks, California, which encompasses approximately 81,100 rentable square feet and, as of December 31, 1995, was 100.0% leased to eleven tenants at an average annual base rent per net rentable square foot of $23.26. The Company has entered into an agreement with a non-affiliated third party for the purchase of this Office Property for a purchase price of $13.2 million.

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Anaheim Office and Industrial Properties. The Company also has entered into an agreement to purchase one office and two industrial properties located at 4123-4175 East La Palma Avenue, Anaheim, California. The Office Property consists of approximately 42,800 rentable square feet. At September 30, 1996, the Office Property was 93.2% leased to 12 tenants at an average annual base rent per net rentable square foot of $11.72. The Industrial Properties comprise an aggregate of approximately 144,000 rentable square feet. At September 30, 1996, each of the Industrial Properties was 100% leased with an aggregate annual base rent per net rentable square foot of $3.74. Pursuant to the terms of the purchase agreement, the Company will acquire all of these properties for an aggregate purchase price of $12.2 million in cash.

12752-12822 Monarch Street, Garden Grove, California. On behalf of the Company, in December 1996 KI purchased an industrial building located at 12752-12822 Monarch Street, Garden Grove, California. The building contains an aggregate of approximately 277,000 rentable square feet. As of September 30, 1996, the property was 100% leased to five tenants at an average annual base rent per net rentable square foot of $3.41. Pursuant to the terms of the purchase agreement, the Property was acquired on behalf of the Company for a purchase price of $9.1 million in cash and will be transferred to the Company concurrent with the Offering. The Company will assume and repay out of the net proceeds of the Offering the debt and expenses incurred by KI in connection with the acquisition. The purchase was completed on behalf of the Company in December 1996 because of the closing schedule required by the seller.

THE COMPANY'S SOUTHERN CALIFORNIA SUBMARKETS*

The Company believes that Los Angeles, Orange and Ventura Counties have been and will continue to be excellent markets in which to own and operate Class A office, industrial and retail property over the long term. The Company believes that these counties are attractive for a number of reasons:

. These counties, together with Riverside and San Bernardino Counties, comprise the second largest Consolidated Metropolitan Statistical Area in the United States (the "Southern California Area") and rank as the world's 12th largest economy;

. The continuing expansion of the service-producing sector of the economy;

. Employment sectors using Class A office and industrial properties continue to expand with the Southern California Area's continuing growth in foreign trade and diversification of industries;

. Since 1992 there has been virtually no increase in the Southern California Area's inventory of office space; and

. The Southern California Area's demand for quality industrial space has spurred new construction of industrial properties.
* The Company retained Robert Charles Lesser & Co. ("Lesser"), nationally recognized experts in real estate consulting and urban economics, to study the Company's Southern California submarkets, and the discussion of such submarkets below and under the caption "Prospectus Summary--The Company's Southern California Submarkets" is based upon Lesser's findings. While the Company believes that these estimates of economic trends are reasonable, there can be no assurance that these trends will in fact continue.

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As of December 31, 1995, the Southern California Area had a total population of approximately 15.6 million people which accounted for approximately 5.9% of the total U.S. population. Annual population growth in the Southern California Area since 1990 has averaged approximately 217,000 persons. Of the approximately 15.6 million people in the Southern California Area, approximately 9.2 million persons lived in Los Angeles County and approximately 2.6 million persons lived in Orange County. Annual estimated growth in population in these counties over the next five years is expected to be approximately 94,000 and 32,000 persons, respectively. The following table presents the total population as a proportion of the United States population for the Southern California Area and California for 1980, 1990 and 1995 and the estimated population for 2000 and 2010.

TOTAL POPULATION AS A PROPORTION OF THE UNITED STATES
SOUTHERN CALIFORNIA AREA AND CALIFORNIA
1980-2010

                             1980     1990     1995     2000     2010
California                 10.50%   12.00%   12.30%   12.70%   13.50%
Southern California Area    3.65%    5.80%    5.90%    6.10%    6.30%

Increasing Employment. The Southern California Area economy experienced significant recessionary conditions during the 1990-1993 period. While the Southern California Area lagged behind the rest of the country in entering the recession, it also lagged in the economic recovery, in part due to the cutbacks in the aerospace and defense industries. Employment growth recovered in 1995. The passage of the North American Free Trade Agreement (NAFTA) in the first quarter of 1995 and the General Agreement on Tariffs and Trade (GATT) in the fourth quarter of 1994 provide optimism for new jobs and economic growth for California. In 1995, the Southern California Area experienced a net increase in employment with the addition of approximately 113,000 jobs, representing an approximately 1.9% increase over the prior year. Of the total, approximately 61,000 jobs (approximately 53.9% of the total) were created in Los Angeles County. Employment in the Southern California Area is expected to increase during 1996 through 1998, with an expected average increase of approximately 125,000 to 135,000 jobs annually, representing an annual growth rate of approximately 2.1%

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to 2.2%, nearly twice the expected national growth rate of 1.2%. The following table shows the annual non-agricultural change in jobs for the Southern California Area for the period from 1980 through 1995, and the expected change in jobs for the period from 1996 through 1998.

ANNUAL NON-AGRICULTURAL EMPLOYMENT CHANGE
SOUTHERN CALIFORNIA AREA
1980-1998

ANNUAL CHANGE IN JOBS

Southern California Area
1980               -0-
  1981            67,900
  1982          (127,300)
  1983            42,100
  1984           222,700
  1985           190,800
  1986           188,500
  1987           194,700
  1988           189,300
  1989           155,700
  1990            90,600
  1991          (173,000)
  1992          (189,000)
  1993          (102,500)
  1994            29,200
  1995           112,800
  1996           124,448
  1997           127,062
  1998           135,907

Unemployment rate in the Southern California Area is moving downward from its 1993 peak. For the U.S., the 1995 unemployment rate was approximately 6.2% versus approximately 7.7% in California. By comparison, the 1993 unemployment rates for the U.S. and California were approximately 6.9% and 9.2%, respectively. While the unemployment rate in the Southern California Area has been declining in the last couple of years, it probably will remain higher than the unemployment rate for the nation as a whole. Within the Southern California Area, the 1995 unemployment rates vary from a low of approximately 5.4% in Orange County to a high of approximately 8.7% in Riverside and San Bernardino Counties. Los Angeles County's unemployment rate stood at approximately 7.7%--the same as California's.

Diversification of Industries. Los Angeles and Orange Counties are widely regarded as major centers for corporate and international business and the growth of international trade through the Los Angeles-Long Beach port complex, which presently ranks as the largest commercial port in the United States, is driving the growth of business in the surrounding area. While the southern coastal Los Angeles County market, including the El Segundo and Long Beach submarkets, has historically been, and continues to be, associated with the aerospace and defense industries, the downsizing of those industries has resulted in the region becoming more diversified, with major corporations in emerging industries such as telecommunications and healthcare. The Company believes this diversity, which is reflected in the Company's tenant base, has strengthened these submarkets in which the Properties are located.

Foreign Trade. The growth in the region's employment is attributable in part to the increase in the volume of trade in the region's ports and airports, which at the end of 1995 accounted for over 12.0% of the total trading volume in the United States and which has grown at an average annual rate of approximately 11.4% during the ten-year period ended in 1994 compared to an approximately 8.0% growth rate nationally during the same period. In addition, during 1995 the trading volume among the region's ports and airports increased another approximately 16.0%, further securing the region's position as the nation's leader in international trade activity.

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The following table shows the growth in the Los Angeles Customs District's share of U.S. Trade for the period from 1972 through 1995.

LOS ANGELES CUSTOMS DISTRICT SHARE OF U.S. TRADE

    1972-1995

1972          6%
1973          6%
1974          7%
1975          6%
1976          7%
1977          7%
1978          7%
1979          7%
1980          8%
1981          8%
1982          8%
1983          9%
1984          9%
1985         11%
1986         12%
1987         12%
1988         12%
1989         12%
1990         12%
1991         12%
1992         12%
1993         12%
1994         13%
1995         12%

Growing Service Economy. Over the last 15 years the composition of employment in the Southern California Area has shifted, generally mirroring national patterns. The goods-producing sector (mining, construction and manufacturing) has declined from an approximately 28.7% share in 1980 to approximately 20.1% in 1995. Within this sector, manufacturing accounted for the entire decline. Correspondingly, the services-producing sector (transportation, communications and utilities; wholesale and retail trade; finance, insurance and real estate services; and government) has expanded from approximately 71.3% of total employment in 1980 to approximately 79.9% in 1995. The following table presents the total employment growth from 1980 to 1995 for various employment sectors in the Southern California Area.

TOTAL NON-AGRICULTURAL EMPLOYMENT GROWTH BY INDUSTRY
SOUTHERN CALIFORNIA AREA
1980-1995

Mining                                    -10.2
Construction                               16.9
Manufacturing                              -260
Transportation and Public Utilities        38.2
Wholesale and Retail Trade                238.5
F.I.R.E.                                   32.9
Services                                  697.6
Government                                138.5
Goods Producing Employment               -253.3
Service Producing Employment             1145.7

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In particular, the entertainment industry now accounts for over 200,000 jobs in the region. The following table shows the growth of tourism and entertainment-related jobs for the period from 1972 through 1995.

GROWTH OF TOURISM AND ENTERTAINMENT-RELATED JOBS
SOUTHERN CALIFORNIA AREA
1972-1995

YEAR       Thousands of Jobs     % Change
 1972             110                ---
1973             120                9.1%
1974             120                0.0%
1975             123                2.5%
1976             130                5.7%
1977             140                7.7%
1978             145                3.6%
1979             150                3.4%
1980             148               -1.3%
1981             165               11.5%
1982             167                1.2%
1983             175                4.8%
1984             180                2.9%
1985             190                5.6%
1986             200                5.3%
1987             218                9.0%
1988             225                3.2%
1989             242                7.6%
1990             254                5.0%
1991             262                3.1%
1992             245               -6.5%
1993             251                2.4%
1994             263                4.8%
1995             297               12.9%

In addition, recent developments in the Southern California Area aerospace industry, such as additional orders for the McDonnell Douglas C-17 military cargo jets and the announcements of new orders for McDonnell Douglas airliners by commercial carriers and the hiring of up to 700 employees by TRW Corporation, should help to stabilize related employment. The following table shows the number of jobs in the aerospace/high technology industries in the Southern California Area for the period from 1988 through 1995.

AEROSPACE/HIGH TECHNOLOGY EMPLOYMENT TRENDS
SOUTHERN CALIFORNIA AREA
1988-1995

                              1988   1989   1990   1991  1992  1993   1994 1995
Aerospace/High Technology    274.2  265.6  253.3  228.6  199  168.7  146.7  135

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Office Submarkets. Total office space in the Southern California Area amounts to approximately 229.2 million square feet. The Southern California Area is the second largest office market in the country after the New York City Metro Area (with over approximately 800 million square feet). Los Angeles County comprises two-thirds of the metro office inventory, roughly 156.1 million square feet; Orange County accounts for approximately 54.2 million square feet.

Vacancy rates in the office space market in the Southern California Area are trending downward from a high in 1991 and 1992 of approximately 19.7% to a level at the end of 1996 of approximately 16.7%. At September 30, 1996, the vacancy rate for the Southern California Office Properties was approximately 6.9%. The following table shows the U.S. and Southern California Area office vacancy rates for the period from 1988 through 1996.

OFFICE MARKET VACANCY TRENDS
SOUTHERN CALIFORNIA AREA VERSUS U.S.

                     1988-1996

                            VACANCY RATE
                                           SOUTHERN
                                          CALIFORNIA
                             U.S.             AREA
                          -------         ----------
1988                        18.2%             0.0%
1989                        18.6%            17.2%
1990                        19.5%             0.0%
1991                        19.4%            19.8%
1992                        18.7%            19.7%
1993                        17.0%            19.2%
1994                        15.5%            18.3%
1995                        14.1%            17.8%
1996                        12.8%            16.7%

Net absorption in the Southern California Area in 1996 amounted to approximately 3.1 million square feet, up from last year's total of 2.2 million and 1994's total of 2.7 million and nearly double 1993's total of approximately 1.7 million square feet. By comparison, absorption in the Southern California Area ranged from approximately 11.1 million to 11.7 million square feet during the mid- to late 1980s. Annual increases in employment during the 1980s fluctuated between approximately 160,000 and 200,000 jobs per year, as opposed

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to job losses during 1991 to 1994. The following table shows the annual absorption of office space in the Southern California Area for each of the years from 1986 through 1996.

ANNUAL NET ABSORPTION OF OFFICE SPACE
SOUTHERN CALIFORNIA AREA
1986-1996

1986 11,116
1987 11,684
1988 11,687
1989 11,260
1990 7,635
1991 5,005
1992 3,301
1993 1,689
1994 2,657
1995 2,153
1996 3,140

No Additional Supply of Office Space. During the last five years new construction of office space in the Southern California Area has decreased substantially. The following table shows the additions in square footage to the Southern California office market for each of the last eight years.

ADDITIONS TO THE SOUTHERN CALIFORNIA AREA'S OFFICE MARKET*

Year     Square Feet
  1989       21,097
  1990       11,033
  1991        9,384
  1992        3,188
  1993          720
  1994            0
  1995            0
  1996            0


* Square feet shown in thousands. The above table represents additions to the Southern California Area's office market net of office space removed from service. In 1994 and 1995, the total square footage in the market decreased by approximately 2.0 million square feet and approximately 1.3 million square feet, respectively.

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The addition in the near-term of any new speculative office space to the market remains unlikely as effective rents for multi-tenant properties are currently well below the level needed to make new construction economically feasible.

El Segundo Office Submarket. In the El Segundo submarket the Company owns and operates three Office Properties at Kilroy LAX, and one stand alone two- story office building. The aggregate rentable square feet of the Office Properties in the El Segundo submarket represent approximately 22% of the approximately 3.4 million rentable square feet of all Class A office properties located in this submarket as of December 31, 1996.

The El Segundo submarket is an approximately 5.4 square mile area in the southwestern coastal section of Los Angeles County. The El Segundo submarket has the advantages of proximity to LAX without the disadvantages of being located within the City of Los Angeles, as is the case with the submarket located on the northeast side of LAX (the "LAX/Century Boulevard submarket"). The El Segundo submarket has a highly qualified computer and technology-based work force. El Segundo's tax structure is as much as $6.00 per square foot per annum lower than neighboring Los Angeles, principally attributable to lower gross receipts and utility taxes. As a result, the El Segundo submarket has historically enjoyed higher rental occupancy and tenant retention rates than neighboring submarkets, such as LAX/Century Boulevard, Torrance and Carson.

The El Segundo submarket tenant base has broadened from its historic concentration of aerospace industry tenants. A number of major corporations have a significant presence in the El Segundo submarket, including Xerox Corporation, Mattel, Inc., Chevron USA, Inc., AT&T, TRW Corporation and Hughes Space & Communications.

Management believes that because of the high quality and strategic location of the four Office Properties located in the El Segundo submarket, the El Segundo Office Properties have had higher occupancy and tenant retention than other properties within this submarket and have achieved higher rental rates. The vacancy rate of Class A office buildings in the El Segundo submarket was approximately 19.8% as of September 30, 1996 as compared to approximately 7% for the Company's El Segundo Office Properties as a whole as of September 30, 1996. The average asking annual rental rate in the El Segundo submarket as of September 30, 1996 was approximately $22.00 per square foot for Class A office buildings compared to an average asking annual rental rate of $24.00 per square foot for the Company's El Segundo Office Properties as of September 30, 1996. No new office buildings are under construction and, to the Company's knowledge, no new construction is presently

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projected in the near future in the El Segundo submarket. The following tables show the comparative vacancy rates of Class A office space in the El Segundo submarket and Kilroy LAX, and the comparative mean asking rents of Class A office space in the El Segundo submarket and Kilroy LAX, respectively.

HISTORICAL CLASS A OFFICE VACANCY KILROY PROPERTIES VERSUS EL SEGUNDO CLASS A 1990-1996 (1996 FIGURES AS OF SEPTEMBER 30)

Year      Kilroy Properties     El Segundo Class A
   1990           8.0%                     8.3%
   1991           6.9%                     4.4%
   1992           6.8%                     8.5%
   1993           5.5%                     5.5%
   1994           4.3%                    19.5%
   1995           4.3%                    10.8%
   1996           7.2%                    19.8%

HISTORICAL CLASS A OFFICE RENTS KILROY PROPERTIES VERSUS EL SEGUNDO CLASS A 1990-1996 (1996 FIGURES AS OF SEPTEMBER 30)

      Kilroy Properties      El Segundo Class A
      Mean Asking Rents       Mean Asking Rents
1990          $23.30                  $22.30
1991          $23.85                  $22.65
1992          $23.91                  $22.55
1993          $23.70                  $21.30
1994          $23.40                  $21.80
1995          $23.40                  $21.10
1996          $23.40                  $22.00

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Through September 30, 1996, net absorption of Class A office space in the El Segundo submarket was a negative 357,000 square feet, principally the result of the 500,000 net rentable square feet of office space owned by an unaffiliated third-party located at 200 North Sepulveda Boulevard and vacated by Hughes Electronics early in 1996. During the same period, Hughes Space & Communications extended leases for office space located at Kilroy LAX covering over 107,000 net rentable square feet. Local brokers indicate that the office space located at 200 North Sepulveda Boulevard is among the lower quality Class A buildings in the El Segundo submarket and is not conducive to most tenants seeking a better quality Class A product as offered at Kilroy LAX. During the year ended 1996, rents at Kilroy LAX remained relatively unaffected by the addition of the lower quality space to the vacant inventory.

Management believes that the submarket's expanding economy, the availability of large blocks of office space and lower rental rates than those offered in the nearby West Los Angeles office submarket should apply some short-term upward pressure on rents for quality Class A office space by as much as 5.0% within the next year. Rental rates at lower quality (non-Class A) buildings are expected to be flat until vacancies drop to a level of at least 15%.

Long Beach Airport Area Office Submarket. Upon consummation of the Offering and the Formation Transactions, the Company will own five Office Properties at Kilroy Long Beach Phases I and II which represent approximately 42% of the total rentable square feet of all Class A office properties located in the Long Beach Airport area submarket.

The Long Beach Airport area submarket is strategically located near the border of Los Angeles and Orange Counties, adjacent to the I-405 Freeway and is in close proximity to several other freeways which serve the area. The submarket is also near the Long Beach Airport which, through AmericaWest Airlines, provides commercial airline access to all regions of the country. The Long Beach Airport area submarket provides tenants with the ability to draw a workforce from and to provide services to clients in both Los Angeles and Orange Counties, making it an ideal location for companies operating in both counties to consolidate their operations to a convenient single location. In addition, portions of the submarket, including the Properties located at Kilroy Airport Center Long Beach, are located within a favorable tax zone which permits qualifying tenants to receive a variety of tax credits and deductions not available in neighboring submarkets. The submarket also offers tenants a secure environment within a first class office park with the potential for substantial expansion, whereas the Long Beach central business district submarket is hampered by traffic congestion and limited opportunities for tenant expansion.

As of September 30, 1996, the vacancy rate of Class A office buildings in the Long Beach Airport area submarket was approximately 16.6% as compared to approximately 8.6% for the Company's Long Beach Office Properties. For the year ended December 31, 1996, the submarket experienced net absorption of approximately 20,000 rentable square feet of office space, as compared to approximately 458,000 rentable square feet for the year ended December 31, 1995, of which 275,000 rentable square feet was attributable to two leases entered into by McDonnell Douglas at the Long Beach Airport Business Park. As of December 31, 1996 and 1995, the mean asking annual rental rate in the Long Beach Airport area submarket was approximately $22.00 and $24.40, respectively, per rentable square foot for Class A office buildings compared to the mean asking annual rental rate at Kilroy Long Beach of $24.00 and $24.30, respectively, per rentable square foot.

The decrease in the submarket's vacancy rate, the indications of improvement in the submarket's aerospace industry and the present difficulty in locating large blocks of contiguous space should apply some short-term upward pressure on rents for Class A office space within the next two years. Available space for technology companies is particularly difficult to find and buildings which offer current telephone communication capabilities and electrical support are more likely to benefit earlier.

Thousand Oaks Submarket. Upon consummation of the Offering and the Formation Transactions, the Company will own a stand-alone three-story office building located in Thousand Oaks, California. The City of Thousand Oaks has approximately 112,600 residents, and is located 40 miles northwest of Los Angeles in

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Ventura County, which is located along the coast immediately north of Los Angeles County. As of December 31, 1995, Ventura County had a population of approximately 720,000 persons. The County is home to companies in various industries including high technology, pharmaceuticals and finance. As of December 31, 1996, the vacancy rate of office space in the Ventura County office submarket was approximately 13.6%. During the years ended December 31, 1996 and 1995, there was net absorption in the Ventura County office submarket of approximately 79,000 and 157,000 rentable square feet of office space, respectively. The average annual effective gross rent for office space in the Ventura County office submarket as of December 31, 1996 was $17.76 per square foot, an increase of 17.5% over 1995.

Industrial Submarkets.

As of December 31, 1996, available industrial space in the Southern California Area totaled approximately 1.2 billion square feet. Vacancy rates in the industrial space market in the Southern California Area have declined from a high of approximately 13.8% in 1992 to approximately 7.6% at December 31, 1996. At September 30, 1996, the vacancy rate for the Industrial Properties was approximately 6.3%. The following table shows the U.S. and Southern California Area industrial vacancy rates for the period from 1991 through 1996.

INDUSTRIAL MARKET VACANCY TRENDS
U.S. AND THE SOUTHERN CALIFORNIA AREA
1991-1996

                             1991     1992     1993     1994    1995    1996
U.S.                         7.9%     8.7%     8.3%     7.4%    6.9%    7.7%
Southern California Area    13.0%    13.8%    13.5%    12.6%    9.2%    7.6%

Much of the existing space on the market in the Southern California Area is considered to be functionally obsolete due to its age, services, and/or configuration. As a result, the Southern California Area inventory for industrial space is beginning to experience a modest growth in new construction primarily of build-to-suit. In addition, speculative construction also grew modestly in 1996 with approximately 7.0 million square feet of new construction representing approximately 0.6% of the region's inventory. However, this amount still is relatively modest when compared to 1989 levels when new construction for the year reached approximately 34.0 million square feet, and the existing building inventory was approximately 1.0 billion square feet.

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El Segundo Industrial Submarket. The Company owns four Industrial Properties located in the City of El Segundo, which contain an aggregate of approximately 390,000 rentable square feet. The El Segundo industrial submarket is part of the South Bay industrial market which includes the cities of Torrance, Carson and Long Beach. At September 30, 1996, the Company's El Segundo Industrial Properties were 98.1% leased to three tenants. At December 31, 1996, the South Bay industrial market contained approximately 185 million rentable square feet of industrial space, with a vacancy rate of approximately 8.0%.

Orange County Industrial Submarket. Upon consummation of the Offering, the Company will own seven Industrial Properties in Orange County, five of which are in the City of Anaheim and two of which are in the City of Garden Grove. The seven Industrial Properties located in Orange County contain an aggregate of approximately 816,877 rentable square feet. At September 30, 1996, the Company's Orange County Industrial Properties were 90.5% leased to 14 tenants. At December 31, 1996, the Orange County industrial submarket contained approximately 207 million rentable square feet, with a vacancy rate of approximately 8.8%. The low current vacancy rate in the Southern California industrial submarket as a whole is likely to put upward pressure on rents for Southern California Class A buildings during 1996, with increases by as much as 9% by the end of 1997.

SEATTLE MARKET

As of 1995, the population of the Seattle metropolitan statistical area ("Seattle MSA") was 2.2 million making it the 21st largest in the country. The median per capita personal income in 1995 for the Seattle MSA was $28,329, which is 22% above the national level.

The Seattle MSA has the 15th largest employment level in the nation. Since 1985, employment has grown at an average annual rate of 3.2%. Industries concentrated in Seattle include aircraft manufacturing, aircraft parts, computer and data processing and healthcare. The largest employers in the greater Seattle area are Boeing Co., The University of Washington, Safeway Inc., Microsoft Corp. and Group Health Cooperative of Puget Sound.

As of December 31, 1992, the vacancy rate for office space in the Seattle MSA was 13.2%. Since then, this rate has steadily declined to a level of 12% as of December 31, 1994 and 9.1% as of June 30, 1996. The Seattle MSA's aggregate office space of 51.3 million square feet made it the 14th largest in the nation and, as of June 30, 1996, it contained 35.2 million square feet of Class A office space with a vacancy rate of 8.7%. Over the last three years only 581,000 square feet of office space has been added to the Seattle MSA.

EXCLUDED PROPERTIES

The Company will hold options to acquire (i) parcels comprising an aggregate of approximately 18 acres located at Calabasas Park Centre, in Calabasas, California and (ii) a three-building office complex located on North Sepulveda Boulevard in El Segundo, California at the respective purchase price for each of the properties as discussed below. The office complex was developed and has been leased and managed by the Kilroy Group and each option property is currently owned by a partnership beneficially owned and controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr. The option for Calabasas Park Centre is exercisable on or before the first anniversary of the Offering. The option for the office complex located on North Sepulveda Boulevard in El Segundo is exercisable on or before the seventh anniversary of the consummation of the Offering. The purchase price for each of the properties will be payable in cash, provided, however, that if the option for the office complex in El Segundo is exercised after the first anniversary of the consummation of the Offering, the purchase price will be payable in cash or Units at the election of the seller. The Company intends to account for acquisitions of Excluded Properties, if any, using the purchase accounting method.

In the event that the owner of a property receives an offer from a third party for the master lease or purchase of such property, such owner may give notice to the Company, which notice shall include the proposed purchase price, leasing terms and/or other economic terms of the proposed transfer or lease of such property. The Company shall then have 60 days to give notice of its election to acquire or lease such property at the lower of

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the applicable option price or the proposed purchase price or lease terms. In the event that the Company does not give such notice, the option to acquire such property shall be suspended and the owner may proceed with the sale or lease of such parcel pursuant to the terms of such offer, provided that the economic terms may be up to 5% below that described in such notice; provided, however, that with respect to any sale of the approximately 18 acres located at Calabasas Park Centre discussed below, the Company shall have the right to acquire at the option price the owners' rights and related monetary obligations under the respective sales agreement. In the event the owners of such property (i) have not entered into a letter of intent for the sale or lease of such property within 180 days following the notice to the Company referenced above, or (ii) have not completed the sale of the respective property within 270 days following such notice, then the Company's option with respect to such property shall be reinstated, up to the expiration date of the option. The Company's options shall be subject to any arrangements entered into by the Kilroy Group in connection with any financing, recapitalization or leasing of the properties including, without limitation, any rights of the lender(s) with respect to such properties with respect to a transfer pursuant to the applicable option. In addition, the office complex will be managed by the Operating Partnership pursuant to a management agreement on market terms.

Calabasas Park Centre. Kilroy Calabasas Associates, a limited partnership, beneficially owned 49.0% by John B. Kilroy, Sr. and 51.0% by John B. Kilroy, Jr., and controlled by both of them, owns Calabasas Park Centre, an approximately 66-acre site (representing approximately 45 developable acres net of acreage required for streets and contractually required open areas) in the City of Calabasas located immediately west of the San Fernando Valley, which is presently entitled for over one million rentable square feet of office, retail and hotel development, and for which future entitlements are expected to include residential development. The property has substantially all significant infrastructure improvements in place. Kilroy Calabasas Associates is actively marketing for sale various parcels totaling approximately 27 acres for neighborhood retail, hotel and residential development, of which approximately 1.7 acres is proposed to be dedicated to the City of Calabasas for civic use. Because these 27 acres are not planned for development for office or industrial use, management believes that such parcels are not appropriate for inclusion in the Company's portfolio. Kilroy Calabasas Associates has received offers with respect to certain parcels and is pursuing such offers in the ordinary course of business, although there is no assurance that any such transactions will be completed in the near term. John B. Kilroy, Sr. and John B. Kilroy, Jr. each expect to spend an immaterial amount of time in connection with any entitlement, marketing and sales of parcels of Calabasas Park Centre. The remaining approximately 18 acres for which the Company has been granted an option is entitled for over 500,000 rentable square feet for office, hotel and limited retail use. Because of the uncertainty that such 18 acres will be used primarily as office space, this property is not appropriate for inclusion in the Company's portfolio at this time. In addition, both John B. Kilroy, Sr. and John B. Kilroy, Jr. have agreed not to sell any of the parcels at Calabasas Park Centre to a real estate investment trust with an existing portfolio of office or industrial properties unless first offered to the Company on the same economic terms. See "Policies with Respect to Certain Activities--Conflicts of Interest Policies-- Noncompetition Agreements."

Pursuant to the terms of the applicable option agreement, the purchase price for the parcels located at Calabasas Park Centre will be equal to the total accumulated costs, as of the date such option is exercised, in connection with acquisition of rights with respect to, and the entitlement and development of such property, including, without limitation, property taxes, predevelopment and entitlement costs and fees, and related bond financing costs.

North Sepulveda Boulevard, El Segundo. The Kilroy Group developed and operates a three-building office complex located on an over 3.5-acre parcel in El Segundo, California, adjacent to LAX. The complex is comprised of an 11- story office building (constructed in 1972), an eight-story office building (constructed in 1962) and a seven-level parking structure with retail space on the ground floor (constructed in 1972), encompassing an aggregate of approximately 360,000 rentable square feet of office space and approximately 5,600 rentable square feet of retail space. The properties have convenient access to LAX and the I-105 Freeway. As of September 30, 1996, the office space was 100% leased to Hughes Space & Communications (of which approximately 60% is occupied) at an average annual triple net base rent per net rentable square foot of $17.91,

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subject to a lease scheduled to expire on February 28, 1998. Management believes that in light of the near-term expiration of the current lease and the uncertainty of whether the current rental rate will approximate market rental rates at the time of expiration, this office complex is not appropriate for inclusion in the Company's portfolio at this time. The property is owned by Kilroy Airport Imperial Co., a limited partnership, beneficially owned by John B. Kilroy, Sr. and by John B. Kilroy, Jr. (who have an approximately 65.1% interest and an 18.2% interest, respectively), and controlled by both of them. In addition, each of Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso, the daughters of John B. Kilroy, Sr., have an approximately 4.2% interest in the limited partnership. Each of Messrs. Kilroy expects to spend an immaterial amount of time in connection with the management of the property.

As of September 30, 1996, the office complex was encumbered by a first mortgage loan having an outstanding principal balance of approximately $61.4 million. The loan bears interest at a rate of 9.63% per year and is scheduled to mature on February 1, 2005. This property is also encumbered by a second mortgage loan having an outstanding principal balance as of September 30, 1996 of $3.4 million. This loan bears interest at a rate of 9.75% per year and is scheduled to mature on February 28, 1998.

Pursuant to the terms of the applicable Option Agreement, the purchase price for the North Sepulveda Boulevard properties is equal to the sum of (i) the then outstanding mortgage indebtedness secured by the respective properties, plus (ii) $1, plus (iii) the aggregate amount of capital contributed by the beneficial owners of the property, net of actual cash distributions distributed in respect of such beneficial owners, during the period beginning on the date of the consummation of the Offering and ending on the date of exercise of the option, plus (iv) an annualized return of 8.0% on the amount in excess of $5.0 million, if any, as determined pursuant to clause (iii) preceding. The Company's option to purchase the North Sepulveda Boulevard properties is subject to a right of first offer held by Hughes Space & Communications.

Other Excluded Properties. In addition to the properties described above, the Company will not acquire the following properties, each of which is owned and controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr.: (i) an approximately three-acre undeveloped parcel located in Tampa, Florida, which management believes is not appropriate for inclusion in the Company's portfolio because of the long-term uncertainty of demand for office and industrial property in the local market; and (ii) an approximately one-half- acre parcel located in Santa Ana, California which management believes is not appropriate for inclusion in the Company's portfolio because the parcel is subject to an easement for railroad use, making the property undesirable for development for office or industrial use. Each of John B. Kilroy, Sr. and John B. Kilroy, Jr. will spend an immaterial amount of time managing these properties.

INSURANCE

Management believes that the Properties are covered by adequate comprehensive liability, rental loss, and all-risk insurance, provided by reputable companies, with commercially reasonable deductibles, limits and policy specifications customarily carried for similar properties. There are, however, certain types of losses which may be either uninsurable or not economically insurable, such as losses due to floods, riots or acts of war. Should an uninsured loss occur, the Company could lose both its invested capital in and anticipated profits from the property.

UNINSURED LOSSES FROM SEISMIC ACTIVITY

The Properties are located in areas that are subject to seismic activity. Although the Company expects to have earthquake insurance on certain of the Properties, should any Property sustain damage as a result of an earthquake, or should losses exceed the amount of such coverage, the Company may incur uninsured losses or losses due to deductibles or co-payments on insured losses.

All of the Properties were reviewed by an independent engineering consultant. Each of the Office Properties located at Kilroy LAX, Kilroy Long Beach and the SeaTac Office Center was reviewed as part of the respective

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office complex ("Office Complex") in which each is located and the following data summarizes the findings with respect to each Office Complex taken as a whole. The review of each of the Properties and Office Complexes included a review of the probable loss associated with certain seismic activity for the "as-is" building shell construction. The estimated property damage loss associated with building shell construction and related business interruption for the Office Complexes and each of the other Properties was estimated based upon site-specific seismic ground motion intensities expected to occur at least once during 50-year and 200-year time periods. For 50-year seismic ground motion intensity, these property damage loss evaluations indicate that none of the Office Complexes would be expected to incur property damage losses in excess of approximately 10% of their respective estimated replacement cost value ("RCV") and only two of the Industrial Properties would be expected to incur property damage losses in excess of approximately 10% of the RCV. The two Industrial Properties, located at 12691 Pala Drive, Garden Grove, California and 1230 South Lewis Street, Anaheim, California, are expected to incur 50-year property damage losses of approximately 13% and approximately 14%, respectively, of their RCVs. For seismic ground motion intensities expected to occur at least once in a 200-year period, these property damage loss evaluations indicate that only one of the Office Properties (including the Office Complexes) would be expected to incur property damage losses in excess of approximately 21% of its RCV. Specifically, the Office Property located at 185 South Douglas Street, El Segundo, California is expected to incur a 200-year property damage loss of approximately 40% of its estimated RCV. With respect to the Industrial Properties, only four would be expected to incur 200-year property damage losses in excess of 25% of their respective RCVs. Specifically, Industrial Properties located at 12691 Pala Drive, Garden Grove, California; 1230 South Lewis Street, Anaheim, California; 2260 E. El Segundo Boulevard, El Segundo, California; and 2270 E. El Segundo Boulevard, El Segundo, California, each would be expected to experience property damage losses of approximately 40% of its respective estimated RCV during a 200-year seismic disturbance.

The Company has insurance for loss in the event of damage to the Properties from earthquake activity, which consists of primary loss insurance of $1.0 million and $10.0 million supplemental coverage, for losses in excess of $11.0 million. Both the primary loss and supplemental coverage are subject to deductibles equal to 25% of the insurable values for each location per occurrence and, for the primary coverage, a minimum deductible of $250,000 (to the extent that such amount is greater than 25% of the insurable values at such location) for each location per occurrence. The Company's earthquake insurance might not be sufficient to cover the cost of damage sustained in any seismic event and is not replacement cost.

GOVERNMENT REGULATIONS

Many laws and governmental regulations are applicable to the Properties and changes in these laws and regulations, or their interpretation by agencies and the courts, occur frequently.

Costs of Compliance with Americans with Disabilities Act. Under the Americans with Disabilities Act of 1990 (the "ADA"), all places of public accommodation, effective beginning in 1992, are required to meet certain federal requirements related to access and use by disabled persons. Compliance with the ADA might require removal of structural barriers to handicapped access in certain public areas where such removal is "readily achievable." Noncompliance with the ADA could result in the imposition of fines or an award of damages to private litigants. The impact of application of the ADA to the Company's properties, including the extent and timing of required renovations, is uncertain. If required changes involve a greater amount of expenditures than the Company currently anticipates or if the changes must be made on a more accelerated schedule than the Company currently anticipates, the Company's ability to make expected distributions to stockholders could be adversely affected.

Environmental Matters. Under various federal, state and local laws, ordinances and regulations relating to the protection of the environment, an owner or operator of real estate may be held liable for the costs of removal or remediation of certain hazardous or toxic substances located on or in the property. These laws often impose liability without regard to whether the owner was responsible for, or even knew of, the presence of such hazardous or toxic substances. The costs of investigation, removal or remediation of such substances may be substantial and, the presence of such substances may adversely affect the owner's ability to rent or sell the

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property or to borrow using such property as collateral. In addition, the presence of such substances may expose it to liability resulting from any release or exposure of such substances. Persons who arrange for the disposal or treatment of hazardous or toxic substances at another location may also be liable for the costs of removal or remediation of such substances at the disposal or treatment facility, whether or not such facility is owned or operated by such person. Certain environmental laws impose liability for release of asbestos-containing materials into the air, and third parties may also seek recovery from owners or operators of real properties for personal injury associated with asbestos-containing materials and other hazardous or toxic substances. In connection with the ownership (direct or indirect), operation, management and development of real properties, the Company may be considered an owner or operator of such properties or as having arranged for the disposal or treatment of hazardous or toxic substances and, therefore, potentially liable for removal or remediation costs, as well as certain other related costs, including governmental penalties and injuries to persons and property.

The Company believes that the Properties are in compliance in all material respects with all federal, state and local laws, ordinances and regulations regarding hazardous or toxic substances or petroleum products. The Company has not been notified by any governmental authority, and is not otherwise aware, of any material noncompliance, liability or claim relating to hazardous or toxic substances or petroleum products in connection with any of its present properties.

All of the Properties were subject to Phase I or similar environmental assessments by independent environmental consultants in connection with the formation of the Company. Phase I assessments are intended to discover information regarding, and to evaluate the environmental condition of, the surveyed property and surrounding properties. Phase I assessments generally include an historical review, a public records review, an investigation of the surveyed site and surrounding properties, and preparation and issuance of a written report, but do not include soil sampling or subsurface investigations. In connection with the preparation of the Phase I environmental survey with respect to Kilroy Long Beach Phase I, interviews of certain individuals formerly employed at the site documented in a historical site assessment survey revealed the site's possible prior use as a Nike missile storage facility. Further investigation performed by the Company's environmental consultants and by the Company did not reveal any additional information with respect to such use of the site. The Company's investigation included whether the site might have been used previously for the storage of missiles containing nuclear warheads, and did not reveal any facts that would indicate that the prior use of the site would result in a material risk of environmental liability. Consequently, the Company does not believe that this site constitutes a risk of a liability that would have a material adverse effect on the Company's financial condition or results of operations taken as a whole. In connection with the preparation of the Phase I environmental survey with respect to the Industrial Property located at 12752-12822 Monarch Street, soil sampling revealed trace elements of contamination with cleaning solvents. However, based on the level of contamination noted in the environmental survey, management does not believe that such contamination will have a material adverse effect on the Company's financial condition or results of operations, taken as a whole. None of the Company's environmental assessments of the other Properties has revealed any environmental liability that the Company believes would have a material adverse effect on the Company's financial condition or results of operations taken as a whole, nor is the Company aware of any such material environmental liability. Nonetheless, it is possible that the Company's assessments do not reveal all environmental liabilities or that there are material environmental liabilities of which the Company is unaware. Moreover, there can be no assurance that (i) future laws, ordinances or regulations will not impose any material environmental liability or (ii) the current environmental condition of the Properties will not be affected by tenants, by the condition of land or operations in the vicinity of the Properties (such as the presence of underground storage tanks), or by third parties unrelated to the Company. If compliance with the various laws and regulations, now existing or hereafter adopted, exceeds the Company's budgets for such items, the Company's ability to make expected distributions to stockholders could be adversely affected.

Other Regulations. The Properties are also subject to various federal, state and local regulatory requirements such as state and local fire and life safety requirements. Failure to comply with these requirements could result in the imposition of fines by governmental authorities or awards of damages to private litigants. The

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Company believes that the Properties are currently in material compliance with all such regulatory requirements. However, the requirements will not be changed or that new requirements will not be imposed which would require significant unanticipated expenditures by the Company and could have an adverse effect on the Company's Funds from Operations and expected distributions.

The City of Los Angeles has enacted certain regulations relating to the repair of welded steel moment frame buildings located in certain areas damaged as a result of the Northridge Earthquake. As currently enacted, such regulations do not apply to the Properties. There can be no assurance, however, that similar regulations will not be adopted by other cities in which the Properties are located or that new requirements will not be imposed which would require significant unanticipated expenditures by the Company and could have a material adverse effect on the Company's Funds from Operations and cash available for distribution.

Except as described in this Prospectus, there are no other laws or regulations which have a material effect on the Company's operations, other than typical state and local laws affecting the development and operation of real property, such as zoning laws. See "Risk Factors--Government Regulations," "Certain Provisions of Maryland Law and of the Company's Articles of Incorporation and Bylaws," "Partnership Agreement of Operating Partnership," "Federal Income Tax Consequences" and "ERISA Considerations."

MANAGEMENT AND EMPLOYEES

The Operating Partnership has been structured as the entity through which the Company will conduct substantially all of its operations. The Services Company has been structured as an entity through which the Company will conduct substantially all of its development activities and related operations. The Company generally has full, exclusive and complete responsibility and discretion in the management and control of the Operating Partnership, but not of the Services Company.

The Company (primarily through the Operating Partnership and the Services Company) initially will employ approximately 47 persons. The Company, the Operating Partnership and the Services Company will employ substantially all of the professional employees of KI that are currently engaged in asset management and administration. The Operating Partnership will employ approximately 18 on-site building employees who currently provide services for the Properties. The Company, the Operating Partnership and the Services Company believe that relations with their employees are good.

LEGAL PROCEEDINGS

Neither the Company nor any of the Properties is subject to any material litigation nor, to the Company's knowledge, is any material litigation threatened against any of them, other than routine litigation arising in the ordinary course of business, which is expected to be covered by liability insurance. In May 1994, KI permitted an uncontested foreclosure by the Bank of America on a five-story office building located in El Segundo, California as part of an overall renegotiation of KI's loans and lines of credit. In July 1993, KI sold Kilroy Long Beach Phase I to the mortgagee thereof, at a purchase price slightly in excess of the outstanding balance of such mortgage. KI continued to lease and manage such facility after such sale. In December 1994, the owner of Hidden River Corporate Park located in Tampa, Florida permitted the uncontested foreclosure of the deeds of trust and certain other property pledged as collateral to secure certain development loans related to such property. KI developed the property, an approximately 210-acre office park, and at the time of the foreclosure John B. Kilroy, Sr. and John B. Kilroy, Jr. were limited partners in the company which owned the property.

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POLICIES WITH RESPECT TO CERTAIN ACTIVITIES

The Company's policies with respect to the following activities have been determined by the Board of Directors of the Company and may be amended or revised from time to time at the discretion of the Board of Directors, without a vote of the stockholders of the Company, if they determine in the future that such a change is in the best interests of the Company and its stockholders.

INVESTMENT POLICIES

Investment in Real Estate or Interests in Real Estate. The Company will conduct all its investment activities through the purchase of interests in the Operating Partnership until all Units have been redeemed or exchanged for shares of Common Stock and the Operating Partnership ceases to exist. During such period, the proceeds of all equity capital raised by the Company will be contributed to the Operating Partnership in exchange for Units in the Operating Partnership. The investment objectives of the Company are to achieve stable cash flow available for distributions and, over time, to increase cash flow and portfolio value by actively managing the Properties, developing properties, acquiring additional properties that, either as acquired or after value-added activities by the Company (such as improved management and leasing services and renovations), will produce additional cash flows and by extending its management, development and leasing business with third-parties. The Company's policy is to develop and acquire properties primarily for generation of current income and appreciation of long-term value.

The Company expects to pursue its investment objectives primarily through the ownership of quality office, industrial and retail properties. The Properties will initially consist of 14 Office Properties and 12 Industrial Properties. The Company currently contemplates developing and acquiring additional office buildings and industrial buildings primarily in Southern California, although future investments could be made outside of such area or in different property categories if the Board of Directors determines that such acquisitions and developments would be desirable. The Company will not have any limit on the amount or percentage of its assets invested in any single property or group of related properties. The Board of Directors may establish limitations as it deems appropriate from time to time. No limitations have been set on the number of properties in which the Company will seek to invest or on the concentration of investments in any one geographic region.

The Company may develop, purchase or lease income-producing properties for long-term investment and expand, improve or sell its properties, in whole or in part, when circumstances warrant. The Company may also participate with other entities in property ownership through joint ventures or other types of co-ownership. Equity investments by the Company may be subject to existing or future mortgage financing and other indebtedness which will have priority over the equity interests of the Company.

As the sole general partner of the Operating Partnership, the Company will also determine the investment policies of the Operating Partnership. Under the Partnership Agreement, all future investments must be made through the Operating Partnership. See "Partnership Agreement of the Operating Partnership--Management."

Investments in Real Estate Mortgages. While the Company will emphasize equity real estate investments, the Company may, in its discretion, invest in mortgages and other real estate interests consistent with the Company's qualification as a REIT. The Company has not previously invested in mortgages and does not presently intend to invest in mortgages or deeds of trust, but may invest in participating or convertible mortgages if the Company concludes that it may benefit from the cash flow or any appreciation in the value of the subject property. Such mortgages are similar to equity participations. Investments in real estate mortgages run the risk that one or more borrowers may default under such mortgages and that the collateral securing such mortgages may not be sufficient to enable the Company to recoup its full investment.

Securities of or Interests in Persons Primarily Engaged in Real Estate Activities and Other Issuers. Subject to the percentage of ownership limitations and gross income tests necessary for the Company to qualify and maintain its status as a REIT, the Company may invest in securities of other entities engaged in real estate

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activities or securities of other issuers. See "Federal Income Tax Considerations--Taxation of the Company." Except for its investment in the Services Company, the Company does not currently intend to invest in the securities of other issuers except in connection with acquisitions of indirect interests in properties (normally general or limited partnership interests in special purpose partnerships owning properties) and in connection with the acquisition of substantially all of the economic interest in a real estate- related operating business where such investments would be consistent with the Company's investment policies. Investment in these securities is also subject to the Company's policy not to be treated as an investment company under the Investment Company Act of 1940. The risks of investing in real estate-related operating businesses include the risk that contracts with third parties may be terminated by such third parties, not renewed upon expiration or renewed on less favorable terms, and the risk that fee income will decrease as a result of a decline in general real estate market conditions.

DISPOSITIONS

The Company has no current intention to cause the disposition of any of the Properties, although it reserves the right to do so if the Board of Directors determines that such action would be in the best interests of the Company. The disposition of the Office Property located at 2260 E. Imperial Highway at Kilroy LAX in El Segundo is subject to the approval of limited partners of the Operating Partnership. See "Partnership Agreement of the Operating Partnership--Certain Limited Partner Approval Rights."

FINANCING

The Company has established its debt policy relative to the market capitalization of the Company rather than to the book value of its assets, a ratio that is frequently employed. Upon completion of the Offering and the Formation Transactions, the debt to total market capitalization ratio (i.e., the total consolidated debt of the Company as a percentage of the market value of the issued and outstanding shares of Common Stock and Units plus total consolidated debt) of the Company will be approximately 25.5% (assuming an initial public offering price of $20.00 per share of Common Stock). This ratio will fluctuate with changes in the price of the Common Stock (and the issuance of additional shares of Common Stock) and differs from the debt-to-book capitalization ratio, which is based upon book value. As the debt-to-book capitalization ratio may not reflect the current income potential of a company's assets and operations, the Company believes that debt-to-total market capitalization ratio provides a more appropriate indication of leverage for a company whose assets are primarily income-producing real estate. The total market capitalization of the Company, however, is more variable than book value, and does not necessarily reflect the fair market value of the underlying assets of the Company at all times. Although the Company will consider factors other than total market capitalization in making decisions regarding the incurrence of indebtedness (such as the purchase price of properties to be acquired with debt financing, the estimated market value of such properties upon refinancing and the ability of particular properties and the Company as a whole to generate cash flow to cover expected debt service), there can be no assurance that the ratio of indebtedness to total market capitalization (or to any other measure of asset value) will be consistent with the expected level of distributions to the Company's stockholders.

The Board of Directors has adopted a policy of limiting the Company's indebtedness to approximately 50% of its total market capitalization, but the organizational documents of the Company do not contain any limitation on the amount or percentage of indebtedness, funded or otherwise, that the Company may incur. In addition, the Company may from time to time modify its debt policy in light of then current economic conditions, relative costs of debt and equity capital, market values of its properties, general conditions in the market for debt and equity securities, fluctuations in the market price of its Common Stock, growth and acquisition opportunities, the Company's continued REIT qualification requirements and other presently unknown factors which may arise in the future which, in the judgment of the Board of Directors, require a revision in such policy. Accordingly, the Company may increase or decrease its debt to market capitalization ratio beyond the limits described above.

To the extent that the Board of Directors decides to obtain additional capital, the Company may raise such capital through additional equity offerings (including offerings of senior or convertible securities and preferred stock), sales of investments, bank and other institutional borrowings, the issuance of debt securities (which may

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be convertible into or exchangeable for shares of Common Stock or be accompanied by warrants to purchase shares of Common Stock) or retention of cash flow (subject to provisions in the Code concerning taxability of undistributed REIT income), or a combination of these methods. In the event that the Board of Directors determines to raise additional equity capital, the Board has the authority, without stockholder approval, to issue additional shares of Common Stock or other capital stock (including securities senior to the Common Stock) of the Company in any manner, and on such terms and for such consideration, it deems appropriate, including in exchange for property. Existing stockholders would have no preemptive right to purchase shares issued in any offering, and any such offering might cause a dilution of a stockholder's investment in the Company. As long as the Operating Partnership is in existence, the net proceeds of the sale of Common Stock by the Company will be contributed to the Operating Partnership as a contribution to capital in exchange for a number of Units in the Operating Partnership equal to the number of shares of Common Stock sold by the Company. The Company presently anticipates that any additional borrowings would be made by the Operating Partnership, although the Company might incur indebtedness, the proceeds of which would be re-loaned to the Operating Partnership on the same terms and conditions as are applicable to the Company's borrowing of such funds. See "Partnership Agreement of the Operating Partnership--Capital Contribution."

Borrowings may be unsecured or may be secured by any or all of the assets of the Company, the Operating Partnership or any existing or new property-owning partnership and may have full or limited recourse to all or any portion of the assets of the Company, the Operating Partnership or any existing or new property-owning partnership. Indebtedness incurred by the Company may be in the form of bank borrowings, purchase money obligations to the sellers of the properties, publicly or privately placed debt instruments or financing from institutional investors or other lenders. There are no limits on the number or amount of mortgages or interests which may be placed on any one property. In addition, such indebtedness may be recourse to all or any part of the property of the Company or may be limited to the particular property for which the indebtedness relates. The proceeds from any borrowings by the Company may be used for working capital, to refinance existing indebtedness, to finance the acquisition, expansion or development of properties and for the payment of distributions.

The Board of Directors also has the authority to cause the Operating Partnership to issue additional Units in any manner (and on such terms and for such consideration) as it deems appropriate, including in exchange for property. See "Partnership Agreement of the Operating Partnership--Issuance of Additional Units."

In the future, the Company may seek to extend, expand, reduce or renew the Mortgage Loans, the proposed Credit Facility, or obtain new credit facilities or lines of credit, subject to its general policy of debt capitalization. Future mortgage loans, credit facilities and lines of credit may be used for the purpose of making acquisitions or capital improvements, providing working capital or meeting the taxable income distribution requirements for REITs under the Code if the Company has taxable income without receipt of cash sufficient to enable the Company to meet such distribution requirements.

WORKING CAPITAL RESERVES

The Company will maintain working capital reserves (and when not sufficient, access to borrowings) in amounts that the Board of Directors determines from time to time to be adequate to meet normal contingencies in connection with the operation of the Company's business and investments.

CONFLICT OF INTEREST POLICIES

Directors and officers of the Company may be subject to certain conflicts of interests in fulfilling their responsibilities to the Company. The Company has adopted certain policies designed to minimize potential conflicts of interest.

Terms of Transfers. The terms of the transfers of the Properties to the Operating Partnership by the Continuing Investors, and the terms of each of the option agreements relating to the Excluded Properties, were not determined through arm's-length negotiation. Partners and affiliates of the Kilroy Group who are directors

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and officers of the Company had a substantial economic interest in the entities transferring the Properties and granting the options. Consequently, such directors and officers may be subject to a conflict of interest with respect to their obligations as management of the Company to enforce the terms of the agreements relating to such transfers, including the indemnification provisions thereof. However, the Independent Directors must approve any transactions between the Company and members of the Kilroy Group including the enforcement of the terms of the transfers. See "Risk Factors--Conflicts of Interests" and "Management."

Sale or Refinancing of Properties. The sale of certain of the Properties may cause adverse tax consequences to members of the Kilroy Group, as compared to the effects on the Company. In addition, a significant reduction in debt encumbering such Properties could cause adverse tax consequences to the members of the Kilroy Group, as compared to the effects on the holders of Units or shares of Common Stock. As a result, certain officers and directors who are members of the Kilroy Group might not favor such a sale of the Properties or a significant reduction in debt even though such sale or debt reduction could be beneficial to the Company. The decision as to whether to proceed with any such sale or debt reduction would be made by the Board of Directors, subject to the obligation of the Operating Partnership to use its commercially reasonable efforts to cooperate with the limited partners to minimize any taxes payable in connection with any repayment, refinancing, replacement or restructuring of indebtedness, or any sale, exchange or any other disposition of assets, of the Operating Partnership. In addition, the Partnership Agreement provides that if the limited partners own at least 5% of the outstanding Units (including Units held by the Company), the Company shall not, on behalf of the Operating Partnership, prior to the seventh anniversary of the consummation of the Offering, sell the Office Property located at 2260 E. Imperial Highway, at Kilroy LAX, other than incident to a merger or sale of substantially all of the Company's assets. See "Partnership Agreement of the Operating Partnership--Transferability of Interests" and "--Certain Limited Partner Approval Rights."

Noncompetition Agreements. John B. Kilroy, Sr. has agreed, during the term of his service as a member of the Company's Board of Directors, not to conduct property development, acquisition or management activities with respect to office and industrial property in greater Southern California or in any other market in which the Company owns, develops or manages property. John B. Kilroy, Sr. will not be restricted, however, from continuing to own, manage and lease certain other existing real estate investments owned by him including, without limitation, certain properties described under "Business and Properties--Excluded Properties."

John B. Kilroy, Jr. has agreed, during the term of his employment agreement and for one year thereafter (unless terminated by the Company without cause), and for so long as he is a member of the Company's Board of Directors, not to conduct property development, acquisition, sale or management activities in any market. Notwithstanding the foregoing, John B. Kilroy, Jr. will not be restricted from continuing to own, manage, lease, transfer and exchange certain existing real estate investments owned by him described under the caption "Business and Properties--Excluded Properties" or owning interests in real property not competitive with the Company.

In addition, with respect to the property located at Calabasas Park Centre, each of Mr. John B. Kilroy, Sr. and Mr. John B. Kilroy, Jr. has agreed to be limited solely to activities related to the marketing, entitlement and sale of such properties. Such properties are being actively marketed for sale and are expected to be sold in the ordinary course of business. Mr. John B. Kilroy, Sr. and Mr. John B. Kilroy, Jr. each will spend an immaterial amount of time in connection with the sale of such properties. In addition, each has agreed not to sell such properties located at Calabasas Park Centre to a real estate investment trust with an existing portfolio of office or industrial properties unless first offered to the Company on the same economic terms.

License Agreement. The Continuing Investors who are members of the Kilroy family will enter into a license agreement (the "License Agreement") pursuant to which such Continuing Investors will grant to the Company the nonexclusive right to use the Kilroy name in connection with the acquisition, development, leasing and management of commercial properties. Pursuant to the terms of the License Agreement, each of the Continuing Investors will retain the right to use the Kilroy name for commercial endeavors, including in connection with real estate transactions. Such activities will be subject to the limitations set forth in the agreements described under the caption "--Noncompetition Agreements."

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Policies Applicable to All Directors. Under the Company's Articles of Incorporation and Maryland law, a contract or transaction between the Company and any of its directors or between the Company and any other corporation, firm or other entity in which any of its directors is a director, officer, stockholder, member or partner or has a material financial interest is not void or voidable solely because of such interest if (i) the contract or transaction is approved, after disclosure of the interest, by the affirmative vote of a majority of the disinterested directors, or by the affirmative vote of a majority of the votes cast by disinterested stockholders, or (ii) the contract or transaction is established to have been fair and reasonable to the Company.

The Company's Articles of Incorporation and Bylaws provide that a majority of the Company's Board of Directors must be Independent Directors. See "Certain Provisions of Maryland Law and of the Company's Articles of Incorporation and Bylaws--Board of Directors."

OTHER POLICIES

The Company intends to operate in a manner that will not subject it to regulation under the Investment Company Act of 1940. The Company does not intend (i) to invest in the securities of other issuers (other than the Operating Partnership and the Services Company) for the purpose of exercising control over such issuer, (ii) to underwrite securities of other issuers or
(iii) to trade actively in loans or other investments.

The Company has authority to offer shares of Common Stock or other securities and to repurchase or otherwise reacquire shares of Common Stock or any other securities in the open market or otherwise and may engage in such activities in the future. The Company may, under certain circumstances, purchase shares of Common Stock in the open market, if such purchases are approved by the Board of Directors. The Board of Directors has no present intention of causing the Company to repurchase any of the shares of Common Stock, and any such action would be taken only in conformity with applicable federal and state laws and the requirements for qualifying as a REIT under the Code and the Treasury Regulations. Although it may do so in the future, except in connection with the Formation Transactions, the Company has not issued Common Stock or any other securities in exchange for property, nor has it reacquired any of its Common Stock or any other securities. The Company expects to issue shares of Common Stock to holders of Units upon exercise of their exchange rights in the Partnership Agreement of the Operating Partnership. The Company has not made loans to other entities or persons, including its officers and directors. The Company may in the future make loans to joint ventures in which it participates in order to meet working capital needs. The Company has not engaged in trading, underwriting or agency distribution or sale of securities of other issuers other than the Operating Partnership, nor has the Company invested in the securities of other issuers other than the Operating Partnership and the Services Company for the purposes of exercising control, and does not intend to do so.

At all times, the Company intends to make investments in such a manner as to be consistent with the requirements of the Code for the Company to qualify as a REIT unless, because of changing circumstances or changes in the Code (or in Treasury Regulations), the Board of Directors of the Company determines that it is no longer in the best interests of the Company to qualify as a REIT and such determination is approved by the affirmative vote of holders owning at least two-thirds of the shares of the Company's capital stock outstanding and entitled to vote thereon.

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THE FINANCING

THE MORTGAGE LOANS

The Company, on behalf of the Operating Partnership, has obtained written commitments for mortgage loans totaling $96.0 million (the "Mortgage Loans"), the closing of which is a condition to the consummation of the Offering. The proceeds of the Mortgage Loans principally will be used to repay existing indebtedness on the Properties. The Mortgage Loans consist of the $84.0 Million Loan and the $12.0 million SeaTac Loan.

The $84.0 Million Loan will require monthly principal and interest payments based on a fixed rate equal to the sum of the interest rate for U.S. Treasury Securities maturing 8 years from the date of the closing of the Credit Facility plus 1.75%, and will amortize over a 25-year period, maturing in 2005. The $84.0 Million Loan will be secured by cross-collateralized and cross-defaulted mortgages on certain of the Properties. The $84.0 Million Loan may not be repaid during the first four years of the loan term. Thereafter the loan may be repaid in whole or in part, subject to a prepayment premium. The $84.0 Million Loan will require reserves for current taxes and insurance, capital expenditures and tenant improvements and leasing commissions. Upon consummation of the Offering, an improvements and repairs reserve of approximately $ will be established, representing 125% of the estimated costs of improvements requested by the lenders, which reserve will be released upon completion of the improvements; a replacement reserve of $ will be established, which thereafter will be funded monthly at an annual rate of $.15 per square foot of the collateral ($.20 per square foot for one approximately 81,200 square foot Office Property); and a reserve of $ will be established to make certain earthquake-related structural modifications. A tenant improvement and leasing commission reserve will commence in January 1998; the Company presently anticipates that the average balance of this reserve will be approximately $1.0 million in each of the first four years of the reserve. In addition, the $84.0 Million Loan will include customary representations and warranties and will require the borrower to comply with the following affirmative and negative covenants: limitations on the incurrence of additional indebtedness; limitations on advances to and investments in others (including the guaranty of any obligations of another person); limitations on the transfer or sale of assets including the collateral; limitations on merger and acquisition transactions; maintenance of minimum levels of insurance; maintenance of collateral; and other customary covenants. The Company anticipates that the $84.0 Million Loan will be incurred by a limited partnership which is wholly-owned by the Company and the Operating Partnership and which will be structured to be a "bankruptcy remote" financing vehicle. The Properties to be used as collateral for the $84.0 Million Loan will be transferred to that limited partnership. Subject to certain limited exceptions, the $84.0 Million Loan will be non-recourse to the Company.

The SeaTac Loan will bear interest at a variable rate equal to the 30-day London interbank overnight rate ("LIBOR") plus 3.0%, and matures in July 1997. The SeaTac Loan will require monthly payments of interest. The SeaTac Loan will be secured by the ground leasehold interest in the SeaTac Office Center. Principal and interest under the SeaTac Loan will be full recourse to the Company. SeaTac's occupancy rate was approximately 42.1% at September 30, 1996. The Company excluded the SeaTac Office Center from the collateral pool for the $84.0 Million Loan to provide flexibility to incur additional debt secured by the SeaTac Office Center if the Company leases additional space at this Property.

THE CREDIT FACILITY

The Company, on behalf of the Operating Partnership is currently negotiating a two-year, $100.0 million revolving credit facility (the "Credit Facility") which the Company and the Operating Partnership expect to enter into shortly after the Offering. There can be no assurance that the Company and the Operating Partnership will enter into the Credit Facility. The Credit Facility is expected to be used primarily to finance acquisitions of additional properties. Payment of principal and interest is expected to be secured by certain Properties other than Properties securing the Mortgage Loans. In addition, borrowings under the Credit Facility are expected to be recourse obligations to the Operating Partnership and the Company.

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Availability under the Credit Facility would be subject to the value of the underlying collateral securing it. The Company expects that, initially, approximately $50.0 million of the total amount of the Credit Facility would be available to the Operating Partnership. The Operating Partnership's ability to borrow under the Credit Facility is expected to be subject to its compliance with the following covenants on an ongoing basis: a ratio of Net Operating Cash Flow (as defined in the Credit Facility) to Debt Service (as defined in the Credit Facility) of 1.75-to-1; a loan to collateral value ratio of not more than 60.0%; a ratio of debt to Tangible Fair Market Value (as defined in the Credit Facility) of real property assets owned by the Operating Partnership of not more than 50%; a ratio of earnings before income taxes, depreciation and amortization to Debt Service of at least 2-to-1; limitations on distributions to 95% of funds from operations; Consolidated Tangible Net Worth (as defined in the Credit Facility) of the Operating Partnership of not less than 90.0% of the Operating Partnership's Consolidated Tangible Net Worth as of the closing date for the Credit Facility; maintenance of the Company's status as a REIT for federal income tax purposes and compliance with all applicable regulations in connection with such status; maintenance of collateral; a limit on total development projects to 20% of total assets; limitations on the incurrence of additional indebtedness; and other customary covenants. The Credit Facility is expected to require monthly interest only (LIBOR based) payments on the total borrowings outstanding under the Credit Facility. The Company and the Operating Partnership anticipate that the Credit Facility will be either extended, renewed or refinanced through the issuance of debt or equity securities at its maturity. The Company and the Operating Partnership will be responsible for payment of the lender's fees and expenses associated with providing the Credit Facility.

If the initial public offering price for the Common Stock is less than the assumed offering price of $20.00 per share, the Company expects to make up any shortfall between the aggregate net proceeds of the Offering and the Mortgage Loans, and the intended uses thereof, by reducing its working capital cash reserves. See "Use of Proceeds."

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MANAGEMENT

DIRECTORS AND EXECUTIVE OFFICERS

Upon consummation of the Offering, the Board of Directors will consist of five members, including a majority of directors who are Independent Directors. Directors of the Company will be divided into three classes serving staggered three-year terms (except initial terms expiring in 1998 and 1999) with directors serving until the election and qualification of their successors. The first annual meeting of stockholders of the Company after the Offering will be held in 1998. Each of the proposed directors named below has been nominated for election upon the consummation of the Offering and has consented to serve. See "Certain Provisions of Maryland Law and of the Company's Articles of Incorporation and Bylaws--Board of Directors." Subject to rights pursuant to any employment agreements, officers of the Company serve at the pleasure of the Board of Directors.

The following table sets forth certain information with respect to the directors, proposed directors and executive officers of the Company immediately following the completion of the Formation Transactions and consummation of the Offering:

                                                                        TERM
          NAME            AGE                POSITION                  EXPIRES
          ----            ---                --------                  -------
John B. Kilroy, Sr.......  74 Chairman of the Board of Directors        1999
John B. Kilroy, Jr.......  48 President, Chief Executive Officer and    2000
                              Director
Jeffrey C. Hawken........  37 Executive Vice President and Chief
                              Operating Officer
Campbell Hugh Greenup....  43 General Counsel
Richard E. Moran Jr......  45 Executive Vice President, Chief
                              Financial Officer and Secretary
A. Christian Krogh.......  48 Vice President, Asset Management
William P. Dickey........  53 Director Nominee                          1998
Matthew J. Hart..........  44 Director Nominee                          1999
Dale F. Kinsella.........  48 Director Nominee                          2000

The following is a biographical summary of the experience of the directors, proposed directors and executive officers of the Company:

JOHN B. KILROY, SR., age 74, founded, in 1947, the businesses which were incorporated in 1952 as the entity today known as Kilroy Industries. Mr. Kilroy has served as Kilroy Industries' President from its incorporation until 1981, and as its Chairman of its Board of Directors since 1954. Mr. Kilroy is a nationally recognized member of the real estate community, providing the Company with strategic leadership and a broadly-based network of relationships. Mr. Kilroy is a trustee of the Independent Colleges of Southern California, serves on the Board of Directors of Pepperdine University, and is a past trustee of Harvey Mudd College.

JOHN B. KILROY, JR., age 48, has been responsible for the overall management of all facets of KI and its various affiliates since 1981. Mr. Kilroy has been involved in all aspects of commercial and industrial real estate acquisition, sales, development, construction, leasing, financing, and entitlement since 1967 and has worked for KI for over twenty-five years. Mr. Kilroy became President of KI in 1981 and was elected Chief Executive Officer in 1991. Prior to that time he held positions as Executive Vice President and Vice President--Leasing & Marketing. He is a member of the National Realty Committee and the Urban Land Institute, and is a trustee of the El Segundo Employers Association, and a past trustee of Viewpoint School, the Jefferson Center For Character Education and the National Fitness Foundation.

JEFFREY C. HAWKEN, age 37, has been responsible for the management and operations of KI's real estate portfolio. Mr. Hawken's activities have included leasing, asset and facility management, with an emphasis on quality of service, operational cost reduction and code compliance. He has also served on KI's acquisitions and executive committees. Mr. Hawken joined KI in 1980, as a Senior Financial Analyst, and has been involved in property and asset management with the Company since May 1983. Since that time,

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he attained the designation of Real Property Administrator (RPA) through the Building Owner's and Manager's Association (BOMA).

CAMPBELL HUGH GREENUP, age 43, has over 14 years of experience in the real estate industry.Mr. Greenup joined KI in 1986 as Assistant General Counsel and had responsibility for a significant portion of the Company's legal affairs, including transaction negotiation and documentation. In addition, he has been responsible for all the Company's development activities, including land acquisition and entitlement, project development, leasing and disposition. In this role, he was also President of Kilroy Technologies Company, LLC, the Kilroy services entity, and directed all of the Company's fee development activities. Mr. Greenup is a member of the American Bar Association, the Urban Land Institute-IOPC Gold Committee, the National Association of Corporate Real Estate Executives and the Los Angeles County Beach Advisory Commission.

RICHARD E. MORAN JR., age 45, was Executive Vice President, Chief Financial Officer and Secretary of the Irvine Apartment Communities, Inc. from 1993 to 1996. Mr. Moran was affiliated with The Irvine Company from 1977 to 1993. He served as Treasurer of The Irvine Company from 1983 to 1993, was named Vice President in 1984, Senior Vice President in 1990, and Executive Vice President Corporate Finance in 1992. Previously, he was a certified public accountant with Coopers & Lybrand. He is a member of the Urban Land Institute. Mr. Moran received his Master of Business Administration degree from the Harvard University Graduate School of Business Administration and his undergraduate degree from Boston College.

A. CHRISTIAN KROGH, age 48, has over 20 years of experience in the real estate industry. Mr. Krogh joined KI in 1990 as Treasurer and was responsible for all cash flow forecasting, preparing variance reports, monitoring short-term cash needs and investments, interfacing with lenders, performing credit analysis for prospective tenants, interfacing with asset management on the day-to-day activities of the Company, as well as other traditional treasurer's functions. Mr. Krogh also was responsible for overseeing KI's personnel functions, obtaining and monitoring property insurance and coordinating employee benefit programs. In the 15 years prior to joining KI Mr. Krogh held similar positions with two other real estate companies.

WILLIAM P. DICKEY, age 53, has agreed to serve as a member of the Board of Directors of the Company commencing upon the consummation of the Offering. Mr. Dickey has been the president of The Dermot Company, Inc., a real estate investment and management company since 1990. From 1986 to 1990,Mr. Dickey was a managing director of real estate for CS First Boston Corporation. Prior to 1986, Mr. Dickey was a partner at the New York law firm of Cravath, Swaine & Moore, where he started as an associate beginning in 1974. Mr. Dickey is a member of the board of directors of Horizon Group, Inc., a REIT which invests primarily in factory outlet centers, Price Enterprises, Inc., a REIT which invests primarily in shopping centers, and Mezzanine Capital Property Investors, Inc., a REIT which invests primarily in the East Coast office/mixed use space, and is a member of the board of trustees of Retail Property Trust, a REIT which invests primarily in regional malls. Mr. Dickey received his undergraduate degree from the United States Air Force Academy, his Masters Degree from Georgetown University and his Juris Doctor Degree from Columbia Law School.

MATTHEW J. HART, age 44, has agreed to serve as a member of the Board of Directors of the Company commencing upon the consummation of the Offering. Mr. Hart joined Hilton Hotels Corporation in 1996 and is its Executive Vice President and Chief Financial Officer. Mr. Hart is primarily responsible for Hilton's corporate finance and development activities. Prior to joining Hilton, Mr. Hart was Senior Vice President and Treasurer of The Walt Disney Company from 1995 to 1996. From 1981 to 1995, Mr. Hart was employed by Host Marriott Corporation (formerly known as Marriott Corporation), most recently as its Executive Vice President and Chief Financial Officer. He was responsible for the company's corporate and project financing activities, as well as the corporate control and the corporate tax functions. Before joining Marriott Corporation, Mr. Hart had been a lending officer with Bankers Trust Company in New York. Mr. Hart is a member of the board of directors of First Washington Realty Trust, Inc., a REIT which invests

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primarily in retail properties. Mr. Hart received his undergraduate degree from Vanderbilt University and a Masters of Business Administration from Columbia University.

DALE F. KINSELLA, age 48, has agreed to serve as a member of the Board of Directors of the Company commencing upon the consummation of the Offering. For the past eight years, Mr. Kinsella has been a partner with the Los Angeles law firm of Kinsella, Boesch, Fujikawa & Towle. Mr. Kinsella received his undergraduate degree from the University of Santa Barbara and his Juris Doctor Degree from the University of California at Los Angeles.

COMMITTEES OF THE BOARD OF DIRECTORS

Audit Committee. Promptly following the consummation of the Offering, the Board of Directors will establish an audit committee (the "Audit Committee"). The Audit Committee will be established to make recommendations concerning the engagement of independent public accountants, review with the independent public accountants the scope and results of the audit engagement, approve professional services provided by the independent public accountants, review the independence of the independent public accountants, consider the range of audit and non-audit fees and review the adequacy of the Company's internal accounting controls. The Audit Committee will initially consist of two or more Independent Directors.

Independent Committee. Promptly following the consummation of the Offering, the Board of Directors will establish an independent committee (the "Independent Committee") consisting solely of Independent Directors. The Independent Committee will be established to approve transactions between the Company and John B. Kilroy, Sr. or John B. Kilroy, Jr. and their respective affiliates.

Executive Committee. Promptly following the consummation of the Offering, the Board of Directors will establish an executive committee (the "Executive Committee"). Subject to the Company's conflict of interest policies, the Executive Committee will be granted the authority to acquire and dispose of real property and the power to authorize, on behalf of the full Board of Directors, the execution of certain contracts and agreements, including those related to the borrowing of money by the Company (and, consistent with the Partnership Agreement of the Operating Partnership, to cause the Operating Partnership to take such actions.) The Executive Committee will include John B. Kilroy, Sr., John B. Kilroy, Jr. and at least one Independent Director.

Executive Compensation Committee. Promptly following the consummation of the Offering, the Board of Directors will establish an executive compensation committee (the "Executive Compensation Committee") to establish remuneration levels for executive officers of the Company and implementation of the Company's Stock Incentive Plan (as defined) and any other incentive programs. The Executive Compensation Committee will initially consist of two or more Independent Directors.

The membership of the committees of the Board of Directors will be established after the completion of the Formation Transactions and the Offering. The Board of Directors may from time to time establish certain other committees to facilitate the management of the Company.

COMPENSATION OF DIRECTORS

The Company intends to pay its Independent Directors annual compensation of $12,000 for their services. In addition, Independent Directors will receive $1,000 for each committee meeting chaired by such director. Independent Directors also will be reimbursed for reasonable expenses incurred to attend director and committee meetings. Officers of the Company who are directors will not be paid any director's fees. Each Independent Director will receive, upon initial election to the Board of Directors, an option to purchase 10,000 shares of Common Stock which will vest pro rata in annual installments over a three-year period. Each Independent Director also will receive an option to purchase 1,000 shares of Common Stock on each anniversary of his election to the Board of Directors, which options also will vest pro rata in annual installments over a three-year period. All stock options will be issued pursuant to the Stock Incentive Plan at an exercise price equal to or greater than the fair market value of the Common Stock at the date of grant.

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EXECUTIVE COMPENSATION

Since the Company has no operating history, meaningful individual compensation information for executive officers is not available for prior periods. The compensation table below sets forth the annual base salary rates and other compensation expected to be paid in 1997 to the Chief Executive Officer and the Company's other executive officers who are expected to have a total annual salary and bonus in excess of $100,000. The Company has entered into employment agreements with certain of its executive officers as described below. See "--Employment Agreements."

                                                              LONG-TERM
                                                             COMPENSATION
                                                      -----------------------------
                                 ANNUAL COMPENSATION  RESTRICTED      SECURITIES
   NAME AND PRINCIPAL            -------------------    STOCK         UNDERLYING
        POSITION         YEAR(1)   SALARY    BONUS     AWARD(S)     OPTIONS/SARS(2)
   ------------------    ------- ---------- --------- ----------    ---------------
John B. Kilroy, Jr. ....  1997     $200,000   $   (3)        --         250,000
 Director, President and
 Chief Executive Officer
Jeffrey C. Hawken.......  1997      175,000       (3)        --         150,000
 Executive Vice
 President and
 Chief Operating Officer
Richard E. Moran Jr. ...  1997      200,000       (3) $1,199,400(4)     150,000
 Executive Vice
 President,
 Chief Financial Officer
 and Secretary
Campbell Hugh Greenup...  1997      165,000       (3)        --         100,000
 General Counsel


(1) Amounts given are annualized projections for the year ending December 31, 1997.
(2) Options to purchase an aggregate of 900,000 shares of Common Stock will be granted to directors, executive officers and other employees of the Company upon consummation of the Offering. Such options will vest pro rata in annual installments over a three-year-period. An additional 500,000 shares of Common Stock will be reserved for issuance under the Stock Incentive Plan. See "--Stock Incentive Plan."
(3) Under the terms of each executive officer's respective employment agreement, each executive officer is entitled to receive an annual bonus in an amount up to 100% of such executive's base salary. The amount of any such bonus will be determined by the Executive Compensation Committee of the Board of Directors. In addition, Mr. Moran will receive a bonus of $200,000 if the Offering is consummated on or before June 30, 1997. Mr. Moran's bonus payable upon consummation of the Offering is an obligation of the principals of KI. See "--Employment Agreements."
(4) Pursuant to Mr. Moran's employment agreement, concurrent with the consummation of the Offering he will receive 60,000 restricted shares of Common Stock under the Stock Incentive Plan with an aggregate value of $1.2 million (assuming a per share value equal to the assumed initial public offering price of $20.00 per share) against the payment of $600 therefor. The restricted stock will vest in equal annual installments pro rata over a three-year period, subject to certain acceleration provisions. See "Management--Employment Agreements." Mr. Moran will be entitled to receive distributions in respect of such restricted stock.

EMPLOYMENT AGREEMENTS

Each of John B. Kilroy, Jr., Jeffrey C. Hawken, Richard E. Moran Jr. and Campbell Hugh Greenup will enter into an employment agreement with the Company which will be effective as of the consummation of the Offering. The employment agreements will have an initial term of three years and will be subject to automatic one-year extensions following the expiration of the initial term. The employment agreements provide for annual base compensation in the amounts set forth in the Executive Compensation table with the amount of any bonus to be determined by the Executive Compensation Committee, up to 100% of the applicable annual base compensation. Under the terms of his employment agreement, Mr. Moran will receive a bonus of $200,000 if the Offering is consummated on or before June 30, 1997. Mr. Moran's bonus payable upon consummation of the Offering is an obligation of the principals of KI.

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The employment agreements entitle the executives to participate in the Company's Stock Incentive Plan (each executive will initially be allocated the number of stock options and/or restricted stock set forth in the Executive Compensation table) and to receive certain other insurance benefits. The employment agreements also provide that in the event of death, the executive's estate will receive monthly payments of the executive's annual salary, plus one-twelfth of any bonus to be received, for a period equal to the lesser of the term remaining under the employment agreement or one year. In addition, in the event of a termination by the Company without "cause," a termination of employment resulting from "disability," a termination by the executive for "good reason," or, in the case of Mr. Kilroy and Mr. Moran, a termination pursuant to a "change of control" of the Company (as such terms are defined in the respective employment agreements), the terminated executive will be entitled to (i) severance (the "Severance Amount") and (ii) continued receipt of certain benefits including medical insurance, life and disability insurance and the receipt of other customary benefits established by the Company for its executive employees for two years following the date of termination (collectively, the "Severance Benefits"). The Severance Amount is equal to the sum of two times the executive's average annual base compensation and two times the highest annual bonus received during the preceding 36-month period. "Disability" means a physical or mental disability or infirmity which, in the opinion of a physician selected by the Board of Directors, renders the executive unable to perform his duties for six consecutive months or for shorter periods aggregating 180 business days in any twelve-month period (but only to the extent that such definition does not violate the Americans with Disabilities Act). "Cause," as defined under the terms of the respective employment agreements, means (a) the executive's conviction for commission of a felony or a crime involving moral turpitude, (b) the executive's willful commission of any act of theft, embezzlement or misappropriation against the Company; or (c) the executive's willful and continued failure to substantially perform the executive's duties (other than such failure resulting from the executive's incapacity due to physical or mental illness), which is not remedied within a reasonable time. "Good reason" means (a) the Company's material breach of any of its obligations under the employment agreement (subject to certain notice and cure provisions) or (b) any removal of the executive from one or more of the appointed offices or any material alteration or diminution in the executive's authority, duties or responsibilities, without "cause" and without the executive's prior written consent. "Change of Control" means (a) the event by which the individuals constituting the board of directors as of the date of the Company's initial public offering of Common Stock cease for any reason to constitute at least a majority of the Company's board of directors; provided, however, that if the election, or nomination for election by the Company's stockholders of any new director was approved by a vote of at least a majority of the members of the original board of directors, such new director shall be considered a member of the original board of directors, (b) an acquisition of any voting securities of the Company by any "person" (as the term "person" is used for purposes of Section 13(d) or
Section 14(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")) immediately after which such person has "beneficial ownership" (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 20% or more of the combined voting power of the Company's then outstanding voting securities unless such acquisition was approved by a vote of at least one more than a majority of the original board of directors; or
(c) approval by the stockholders of the Company of (i) a merger, consolidation, share exchange or reorganization involving the Company, unless the stockholders of the Company, immediately before such merger, consolidation, share exchange or reorganization, own, directly or indirectly immediately following such merger, consolidation, share exchange or reorganization, at least 80% of the combined voting power of the outstanding voting securities of the corporation that is the successor in such merger, consolidation, share exchange or reorganization in substantially the same proportion as their ownership of the voting securities immediately before such merger, consolidation, share exchange or reorganization; (ii) a complete liquidation or dissolution of the Company; or (iii) an agreement for the sale or other disposition of all or substantially all of the assets of the Company.

STOCK INCENTIVE PLAN

The Company has established the Stock Incentive Plan to enable executive officers, key employees and directors of the Company, the Operating Partnership and the Services Company to participate in the ownership of the Company. The Stock Incentive Plan is designed to attract and retain executive officers, other key employees and directors of the Company, the Operating Partnership and the Services Company and to provide incentives to such persons to maximize the Company's cash flow available for distribution. The Stock Incentive

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Plan provides for the award to such executive officers and employees of the Company, the Operating Partnership and the Services Company (subject to the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors) of a broad variety of stock-based compensation alternatives such as nonqualified stock options, incentive stock options, restricted stock and stock appreciation rights, and provides for the grant to Independent Directors and directors of the Services Company (subject to the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors) of nonqualified stock options.

Stock Options. Promptly after the closing of the Offering, the Company expects to issue to certain officers, directors and key employees of the Company, the Operating Partnership and the Services Company options to purchase, subject to the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors, 900,000 shares of Common Stock pursuant to the Stock Incentive Plan. The term of each of such option will be ten years from the date of grant. Each such option will vest 33 1/3% per year over three years and is exercisable at a price per share equal to the initial public offering price per share of Common Stock in the Offering. The following table below sets forth the expected allocation of the options to such persons.

NAME                                                                OPTIONS
----                                                                -------
John B. Kilroy, Sr.................................................  15,000
John B. Kilroy, Jr................................................. 250,000
Jeffrey C. Hawken.................................................. 150,000
Richard E. Moran Jr. .............................................. 150,000
Campbell Hugh Greenup.............................................. 100,000
Independent Directors (as a group).................................  30,000
Other employees (as a group)....................................... 205,000

An additional 500,000 shares of Common Stock will be reserved for issuance under the Stock Incentive Plan. There is no limit on the number of awards that may be granted to any one individual so long as the (i) aggregate fair market value (determined at the time of grant) of shares with respect to which an incentive stock option is first exercisable by an optionee during any calendar year cannot exceed $100,000, (ii) the grant does not violate the Ownership Limit or cause the Company to fail to qualify as a REIT for federal income tax purposes and (iii) the maximum number of shares of Common Stock for which stock options and stock appreciation rights may be issued during any fiscal year to any participant in the Stock Incentive Plan shall not exceed 300,000. See "Description of Capital Stock--Restrictions on Ownership and Transfer."

Restricted Stock. Restricted stock may be sold to participants at various prices (but not below par value) and made subject to such restrictions as may be determined by the Executive Compensation Committee. Restricted stock, typically, may be repurchased by the Company at the original purchase price if the conditions or restrictions are not met. In general, restricted stock may not be sold, or otherwise transferred or hypothecated, until restrictions are removed or expire. Purchasers of restricted stock will have voting rights and will receive distributions prior to the time when the restrictions lapse. The Company will issue 60,000 restricted shares of Common Stock reserved for issuance under the Stock Incentive Plan, to Richard E. Moran Jr. upon consummation of the Offering.

Administration of the Stock Incentive Plan. The Stock Incentive Plan is administered by the Board of Directors and/or the Executive Compensation Committee. No person is eligible to serve on the Executive Compensation Committee unless such person is then an Independent Director. The Committee has complete discretion to determine (subject to (a) the Ownership Limit contained in the Articles of Incorporation of the Company and (b) a limit against granting options or stock appreciation rights for more than 300,000 shares to any person in any fiscal year) which eligible individuals are to receive option or other stock grants, the number of shares subject to each such grant, the status of any granted option as either an incentive option or a non-qualified stock option under the federal tax laws, the exercise schedule to be in effect for the grant, the maximum term for which any granted option is to remain outstanding and subject to the specific terms of the Stock Incentive Plan, any other terms of the grant.

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Eligibility. All employees of the Company may, at the discretion of the Executive Compensation Committee, be granted incentive and non-qualified stock options to purchase shares of Common Stock at any exercise price not less than 100% of the fair market value of such shares on the grant date. Directors of the Company, employees of the Operating Partnership, employees and directors of the Services Company, consultants and other persons who are not regular salaried employees of the Company are not eligible to receive incentive stock options, but are eligible to receive non-qualified stock options. In addition, all employees and consultants of the Company, the Operating Partnership and the Services Company are eligible for awards of restricted stock and grants of stock appreciation rights.

Number of Shares Subject to Stock Incentive Plan. The Company has reserved up to 1,460,000 shares of Common Stock for issuance pursuant to the Stock Incentive Plan, 60,000 of which will be issued, and options covering 900,000 of which will be granted, under the Stock Incentive Plan upon the consummation of the Offering.

Purchase Price of Shares Subject to Options. The price of the shares of Common Stock subject to each option shall be set by the Executive Compensation Committee; provided, however, that the price per share of an option shall be not less than 100% of the fair market value of such shares on the date such option is granted; provided, further, that, in the case of an incentive stock option, the price per share shall not be less than 110% of the fair market value of such shares on the date such option is granted in the case of an individual then owning (within the meaning of Section 424(d) of the Code) more than ten percent of the total combined voting power of all classes of stock of the Company, any subsidiary or any parent corporation ("greater than 10% stockholders").

Non-Assignability. Options may be transferred only by will or by the laws of descent and distribution. During a participant's lifetime, options are exercisable only by the participant.

Terms and Exercisability of Options. Unless otherwise determined by the Board of Directors or the Executive Compensation Committee, all options granted under the Stock Incentive Plan are subject to the following conditions: (i) options will be exercisable in installments, on a cumulative basis, at the rate of thirty-three and one-third percent (33 1/3%) each year beginning on the first anniversary of the date of the grant of the option, until the options expire or are terminated, and (ii) following an optionee's termination of employment, the optionee shall have the right to exercise any outstanding vested options for a specified period.

Options are not assignable or transferable by the optionee except by will or the laws of inheritance following the optionee's death. The optionee has no stockholder rights with respect to the shares subject to his or her outstanding options until such options are exercised and the purchase price is paid for the shares.

To the extent that the aggregate fair market value of stock with respect to which "incentive stock options" (within the meaning of Section 422 of the Code, but without regard to Section 422(d) of the Code) are exercisable for the first time by an optionee during any calendar year (under the Stock Incentive Plan and all other incentive stock option plans of the Company, any subsidiary and any parent corporation) exceeds $100,000, such options shall be taxed as non-qualified stock options. The rule set forth in the preceding sentence shall be applied by taking options into account in the order in which they were granted. For this purpose, the fair market value of stock shall be determined as of the time that the option with respect to such stock is granted.

Options are exercisable in whole or in part by written notice to the Company, specifying the number of shares being purchased and accompanied by payment of the purchase price for such shares. The option price may be paid:
(i) in cash or by certified or cashier's check payable to the order of the Company, (ii) by delivery of shares of Common Stock of the Company already owned by, and in the possession of, the optionee or (iii) if authorized by the Board of Directors or the Executive Compensation Committee or if specified in the option agreement for the option being exercised, by a recourse promissory note made by the optionee in favor of the Company or through installment payments to the Company.

On the date the option price is to be paid, the optionee (or his or her successor) must make full payment to the Company of all amounts that must be withheld by the Company for federal, state or local tax purposes.

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Termination of Employment; Death or Permanent Disability. If a holder of an option ceases to be employed by the Company for any reason other than the optionee's death or permanent disability, such optionee's stock option shall expire three months after the date of such cessation of employment unless by its terms it expires sooner; provided, however, that during such period after cessation of employment, such stock option may be exercised only to the extent it was exercisable according to such option's terms on the date of cessation of employment. If an optionee dies or becomes permanently disabled while the optionee is employed by the Company, such optionee's option shall expire twelve months after the date of such optionee's death or permanent disability unless by its terms it expires sooner. During such period after death, such stock option may, to the extent it remains unexercised upon the date of such death, be exercised by the person or persons to whom the optionee's rights under such stock option are transferred under the laws of descent and distribution.

Acceleration of Exercisability. In the event that the Company is acquired by merger, consolidation or asset sale, each outstanding option which is not to be assumed by the successor corporation or replaced with a comparable option to purchase shares of the capital stock of the successor corporation will, at the election of the Board of Directors (or if so provided in an option or other agreement with an optionee), automatically accelerate in full.

Adjustments. In the event any change is made to the Common Stock issuable under the Stock Incentive Plan by reason of any recapitalization, stock dividend, stock split, combination of shares, exchange of shares or other change in corporate structure effected without the Company's receipt of consideration, appropriate adjustment will be made to (i) the maximum number and class of shares issuable under the Stock Incentive Plan and (ii) the number and/or class of shares and price per share in effect under each outstanding option.

Amendments to the Stock Incentive Plan. The Board of Directors may at any time suspend or terminate the Stock Incentive Plan. The Board of Directors or Executive Compensation Committee may also at any time amend or revise the terms of the Stock Incentive Plan, provided that no such amendment or revision shall, unless appropriate stockholder approval of such amendment or revision is obtained, (i) increase the maximum number of shares which may be acquired pursuant to options granted under the Stock Incentive Plan (except for adjustments as described in the foregoing paragraph) or (ii) change the minimum purchase price required under the Stock Incentive Plan.

Termination. The Stock Incentive Plan will terminate ten years from the date the Offering is consummated, unless sooner terminated by the Board of Directors.

Registration Statement on Form S-8. After the consummation of the Offering, the Company expects to cause to be filed with the Securities and Exchange Commission a Registration Statement on Form S-8 covering the restricted shares of Common Stock and the shares of Common Stock underlying options granted under the Stock Incentive Plan.

FEDERAL INCOME TAX CONSEQUENCES TO PARTICIPANTS IN THE STOCK INCENTIVE PLAN

The following summary of the material federal income tax consequences to participants in the Stock Incentive Plan is based on current law, is for general information only and is not tax advice. The summary does not purport to discuss all aspects of federal income taxation that may be relevant to a particular participant in light of such participant's personal investment circumstances.

A participant may be subject to state or local taxation in various state or local jurisdictions in which he or she works or resides. State and local tax treatment of the participants are not discussed in this summary, and such state and local tax treatment may not conform to the federal income tax consequences discussed in this summary.

Non-Qualified Stock Options. A participant who is granted non-qualified stock options does not realize income as a result of the grant of such options. However, the participant normally realizes compensation income at the time the options are exercised, in the amount by which the fair market value of the Common Stock on the date the options are exercised exceeds the option exercise price paid. This compensation income is taxable at

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ordinary income rates, and the Company is required to withhold taxes on the amount treated as ordinary income to the participant.

The participant's tax basis for Common Stock acquired upon the exercise of a non-qualified stock option is the price paid to exercise the option plus the amount of ordinary income realized by the participant as a result of the exercise of the option. Any appreciation in the value of such Common Stock may qualify for capital gains treatment, provided that applicable holding period requirements are satisfied.

The tax consequences resulting from a participant's exercise of non- qualified options by surrendering Common Stock already owned by the participant are not completely certain. In published rulings, the Internal Revenue Service (the "IRS") has taken the position that, to the extent that the number of shares acquired is equivalent to the number of shares surrendered, the participant recognizes no gain and the participant's basis in the shares acquired upon such exercise is equal to the participant's basis in the surrendered shares, that any additional shares acquired upon such exercise is compensation to the participant taxable under the rules described above, and that the participant's basis in any such additional shares will be their fair market value.

Incentive Stock Options. A participant who is granted incentive stock options is not treated as having received taxable income upon either the grant or the exercise of the options. Instead, such participant is taxed at the time of the sale or other taxable disposition of the Common Stock acquired pursuant to the exercise of the option. Generally, such participants pay taxes at long- term capital gains rates on the difference between the amount realized on the sale or other disposition of the shares and the option exercise price. To qualify for such capital gains treatment, the participant (i) must not sell or dispose of the shares earlier than two years from the date of grant of the incentive stock option or one year from the date of transfer of the shares to the participant upon exercise, and (ii) must be an employee of the Company at all times during the period beginning with the date of the grant of the option and ending three months before the date of exercise. If the shares of stock are sold or otherwise disposed of before the end of the one-year period or the two-year period, a portion of the gain, if any, may be treated as compensation taxable as ordinary income rather than as capital gain.

The tax consequences resulting from a participant's exercise of incentive stock options by surrendering shares of Common Stock already owned by the participant are not completely certain. In published rulings and proposed regulations, the IRS has taken the position that generally the participant recognizes no income upon such stock-for-stock exercise, that to the extent that the number of shares acquired is equivalent to the number of shares surrendered, the participant's basis in the shares acquired upon such exercise is equal to the participant's basis in the surrendered shares increased by any compensation income recognized by the participant, that the participant's basis in any additional shares acquired by such exercise is zero, and that any sale or other disposition of the acquired shares within the one-year period or the two-year period described above is viewed as a disposition of the shares with the lowest basis first.

Alternative minimum tax must be paid when it exceeds a taxpayer's regular federal income tax. Alternative minimum tax is calculated based on alternative minimum taxable income, which is taxable income for federal income tax purposes, modified by certain adjustments and increased by tax preference items. For purposes of the foregoing, the difference between the exercise price and the fair market value of shares of Common Stock acquired pursuant to the exercise of an incentive stock option is classified as alternative minimum taxable income for the year of exercise. For alternative minimum tax purposes (but not for regular income tax purposes), the participant's basis in the acquired shares is the fair market value of the shares at the time the incentive stock option is exercised. A disqualifying disposition of the acquired shares during the same year in which the incentive stock option was exercised will cancel the alternative minimum taxable income generated upon exercise of the incentive stock option. Should there be a disqualifying disposition in a year other than the year of exercise, the income on the disqualifying disposition will not be considered income for alternative minimum tax purposes.

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FEDERAL INCOME TAX CONSEQUENCES TO THE COMPANY

The following summary of the material federal income tax consequences to the Company is based on current law, is for general information only and is not tax advice.

Section 162(m) Limitation. Subject to a limited number of exceptions,
Section 162(m) of the Code denies a deduction to a publicly held corporation for payments of remuneration to certain employees to the extent the employee's remuneration for the taxable year exceeds $1,000,000. For this purpose, remuneration attributable to stock options is included within the $1,000,000 limitation. However, to the extent that the remuneration is payable solely on account of the attainment of one or more performance goals and certain other procedural requirements are met, then such remuneration is not subject to the $1,000,000 limitation.

The Company has attempted to structure the Stock Incentive Plan in such a manner that the remuneration attributable to the stock options will not be subject to the $1,000,000 limitation. The Company has not, however, requested a ruling from the IRS or an opinion of counsel regarding this issue.

Non-Qualified Stock Options. Subject to the limitations set forth in Code
Section 162(m) and discussed above, the Company is entitled to deduct from its taxable income the amount that the participant is required to include in ordinary income at the time of such inclusion.

Incentive Stock Options. The Company is not entitled to any deduction on account of the grant of the incentive stock options or the participant's exercise of the option to acquire Common Stock. However, in the event of a subsequent disqualifying disposition of such shares under circumstances resulting in taxable compensation to the participant, subject to the limitations set forth in Code Section 162(m) and discussed above, the Company is entitled to a tax deduction equal to the amount treated as taxable compensation to the participant.

SECTION 401(K) PLAN

Effective upon the consummation of the Offering, the Company intends to establish the Company's Section 401(k) Savings/Retirement Plan (the "Section
401(k) Plan") to cover eligible employees of the Company and any designated affiliate.

The Section 401(k) Plan will permit eligible employees of the Company to defer up to 15% of their annual compensation, subject to certain limitations imposed by the Code. The employees' elective deferrals are immediately vested and non-forfeitable upon contribution to the Section 401(k) Plan. The Company currently does not intend to make matching contributions to the Section 401(k) Plan; however, it reserves the right to make matching contributions or discretionary profit sharing contributions in the future.

INDEMNIFICATION

For a description of the limitation of liability and indemnification rights of the Company's officers and directors, see "Certain Provisions of Maryland Law and of the Company's Articles of Incorporation and Bylaws--Limitation of Directors' and Officers' Liability" and "--Indemnification Agreements."

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CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Certain directors and executive officers of the Company (or members of their immediate families) and persons who will hold more than 5% of the outstanding shares of Common Stock (or interests exchangeable therefor) have direct or indirect interests in transactions which have been or will be consummated by the Company, the Operating Partnership or the Services Company, including the transfer of certain Properties to the Operating Partnership by the Continuing Investors, the grant of options with respect to the Excluded Properties and, if exercised, the purchase by the Company of one or more of the Excluded Properties from the respective Continuing Investors, the repayment of certain indebtedness encumbering the Properties and the performance of management and leasing activities by the Operating Partnership and certain development and other activities by the Services Company at the Excluded Properties. See "Formation Transactions." In addition, John B. Kilroy, Sr. has contributed $1,000 to the Company in exchange for an aggregate of 50 shares of Common Stock, and upon consummation of the Offering, John B. Kilroy, Jr. and John B. Kilroy, Sr. each will have contributed cash to the Services Company, which, upon consummation of the Offering and the Formation Transactions, will represent a 5.0% economic interest in the Services Company.

PARTNERSHIP AGREEMENT

Concurrently with the completion of the Offering, the Company will enter into the Partnership Agreement of the Operating Partnership with the various limited partners of the Operating Partnership. See "Partnership Agreement of Operating Partnership." John B. Kilroy, Sr. and John B. Kilroy, Jr., who are limited partners of the Operating Partnership, are directors and/or officers of the Company.

ASSIGNMENT OF LEASE; VARIOUS SERVICES PROVIDED BY THE SERVICES COMPANY TO THE KILROY GROUP

Concurrently with the completion of the Offering, KI will assign to the Operating Partnership all of its interest as a tenant in a lease with a partnership affiliated with the Continuing Investors covering the space currently serving as the headquarters of KI at Kilroy LAX in El Segundo, California. The Company, the Operating Partnership and the Services Company will occupy such space, with the Company and the Services Company subleasing some of such space from the Operating Partnership and paying rent to the Operating Partnership therefor, at rates which the Company believes are equal to the fair rental value of the space.

Pursuant to management agreements, the Operating Partnership will provide management and leasing services, and the Services Company will provide development services, with respect to the Excluded Properties, each of which is beneficially owned and controlled by John B. Kilroy, Sr. and John B. Kilroy, Jr., for fees equivalent to the fair market value of such services. See "Business and Properties--Development, Management and Leasing--Excluded Properties."

BENEFITS OF THE FORMATION TRANSACTIONS TO CERTAIN EXECUTIVE OFFICERS

In connection with the Formation Transactions, John B. Kilroy, Sr., Chairman of the Company's Board of Directors, will receive Units, the repayment of a personal loan and the termination of guarantees of loans secured by certain of the Properties. Also in connection with the Formation Transactions, John B. Kilroy, Jr. will receive Units, as well as the termination of guarantees of loans secured by certain of the Properties and certain benefits under his employment agreement with the Company. See "Use of Proceeds". In addition, each of John B. Kilroy, Sr. and John B. Kilroy, Jr. own and control Kilroy Calabasas Associates, a California limited partnership, and Kilroy Airport Imperial Co., a California limited partnership, which, upon the exercise of certain options by the Company, may transfer certain of the Excluded Properties to the Operating Partnership in exchange for cash or Units. In the event that the Independent Directors determine to cause the Company to exercise its options to purchase these properties, John B. Kilroy, Sr. and John B. Kilroy, Jr. will receive the consideration paid therefor. See "Business and Properties--Development, Management and Leasing--Excluded Properties."

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PRINCIPAL STOCKHOLDERS

The following table sets forth the beneficial ownership of shares of Common Stock immediately following the consummation of the Offering and the Formation Transactions for (i) each person who is expected to be the beneficial owner of 5% or more of the outstanding Common Stock immediately following the consummation of the Offering, (ii) directors, proposed directors and the executive officers of the Company, and (iii) directors, proposed directors and executive officers of the Company as a group. Except for the restricted Common Stock owned by Mr. Moran and the 50 shares of Common Stock owned by John B. Kilroy, Sr. (which will be repurchased upon consummation of the Offering), none of the persons or entities listed below currently owns any shares of Common Stock, but rather owns Units exchangeable for shares of Common Stock. See "Partnership Agreement of the Operating Partnership--Redemption/Exchange Rights." This table assumes that (i) the Formation Transactions and the Offering are completed and (ii) the Underwriters' over-allotment option will not be exercised. Each person named in the table has sole voting and investment power with respect to all of the shares of Common Stock shown as beneficially owned by such person, except as otherwise set forth in the notes to the table. This table reflects the ownership interests each of the following persons would have if each person exchanged all of his Units for shares of Common Stock at an initial exchange ratio of one Unit for each share of Common Stock (without regard to the Ownership Limit and the prohibition on redemption or exchange of Units until two years after the date of the Offering). See "Partnership Agreement of the Operating Partnership-- Redemption/Exchange Rights." Unless otherwise indicated, the address of each named person is c/o Kilroy Realty Corporation, 2250 East Imperial Highway, Suite 1200, El Segundo, California 90245.

                                                          PERCENTAGE OF
                                  NUMBER OF SHARES     OUTSTANDING SHARES
NAME OF BENEFICIAL OWNER        BENEFICIALLY OWNED(1) OF COMMON STOCK(1)(2)
------------------------        --------------------- ---------------------
John B. Kilroy, Sr ............       1,263,087(3)             8.99%
John B. Kilroy, Jr. ...........       1,263,087(3)             8.99%
Jeffrey C. Hawken..............             --                  --
Richard E. Moran Jr. ..........          60,000(4)             0.43%
Campbell Hugh Greenup..........             --                  --
William P. Dickey..............             --                  --
Matthew J. Hart................             --                  --
Dale F. Kinsella...............             --                  --
All directors and executive
 officers as a group
 (8 persons)...................       2,586,174               18.40%


(1) Includes the Units to be beneficially owned by KI which are allocated to John B. Kilroy, Sr. and John B. Kilroy, Jr., the only shareholders of KI, in accordance with their respective percentage ownership of KI. Excludes options to purchase 695,000 shares of Common Stock granted to executive officers and directors at the consummation of the Offering.
(2) Assuming exchange of the 2,692,374 Units outstanding upon consummation of the Offering.
(3) These Units have been pledged to secure certain indemnification obligations to the Company arising in connection with the Formation Transactions. See "Certain Relationships and Related Transactions."
(4) Represents 60,000 restricted shares of Common Stock granted under the Stock Incentive Plan to Richard E. Moran Jr. pursuant to the terms of his employment agreement, which shares will vest in three equal annual installments over a three-year period. See "Management--Employment Agreements."

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DESCRIPTION OF CAPITAL STOCK

The following summary of the terms of the Company's capital stock does not purport to be complete and is subject to and qualified in its entirety by reference to the Company's Articles of Incorporation and Bylaws, copies of which are filed as exhibits to the Registration Statement of which this Prospectus is a part. See "Additional Information."

GENERAL

Under the Articles of Incorporation, the authorized capital stock of the Company consists of 150,000,000 shares of Common Stock, par value $.01 per share, and 30,000,000 shares of preferred stock, par value $.01 per share ("Preferred Stock"). Upon completion of the Offering and Formation Transactions, there will be 11,360,000 shares of Common Stock issued and outstanding (including 60,000 restricted shares of Common Stock granted to an officer of the Company who is not a Continuing Investor and excluding the 1,675,000 shares which are subject to the Underwriters' over-allotment option and shares that may be issued upon the exchange of outstanding Units), and no shares of Preferred Stock will be issued and outstanding.

COMMON STOCK

Each outstanding share of Common Stock will entitle the holder to one vote on all matters presented to stockholders for a vote, including the election of directors, and, except as otherwise required by law and except as provided in any resolution adopted by the Board of Directors with respect to any other class or series of stock establishing the designation, powers, preferences and relative, participating, optional or other special rights and powers of such series, the holders of such shares will possess the exclusive voting power, subject to the provisions of the Company's Articles of Incorporation regarding the ownership of shares of Common Stock in excess of the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors described below. Holders of shares of Common Stock will have no conversion, exchange, sinking fund, redemption or appraisal rights and have no preemptive rights to subscribe for any securities of the Company or cumulative voting rights in the election of directors. All shares of Common Stock to be issued and outstanding following the consummation of the Offering will be duly authorized, fully paid and nonassessable. Subject to the preferential rights of any other shares or series of stock and to the provisions of the Articles of Incorporation regarding ownership of shares of Common Stock in excess of the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors described below, distributions may be paid to the holders of shares of Common Stock if and when authorized and declared by the Board of Directors of the Company out of funds legally available therefor. The Company intends to make quarterly distributions, beginning with distributions for the portion of the quarter from the consummation of the Offering through March 31, 1997. See "Distribution Policy."

Under Maryland law, stockholders are generally not liable for the Company's debts or obligations. If the Company is liquidated, subject to the right of any holders of Preferred Stock to receive preferential distributions, each outstanding share of Common Stock will be entitled to participate pro rata in the assets remaining after payment of, or adequate provision for, all known debts and liabilities of the Company, including debts and liabilities arising out of its status as general partner of the Operating Partnership.

Subject to the provisions of the Articles of Incorporation regarding the ownership of shares of Common Stock in excess of the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors described below, all shares of Common Stock will have equal distribution, liquidation and voting rights, and will have no preference or exchange rights. See "--Restrictions on Ownership and Transfer."

Under the MGCL, a Maryland corporation generally cannot dissolve, amend its charter, merge, sell all or substantially all of its assets, engage in a share exchange or engage in similar transactions outside the ordinary course of business unless approved by the affirmative vote of stockholders holding at least two-thirds of the

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shares entitled to vote on the matter unless a lesser percentage (but not less than a majority of all of the votes entitled to be cast on the matter) is set forth in the corporation's charter. Under the MGCL, the term "substantially all of the Company's assets" is not defined and is, therefore, subject to Maryland common law and to judicial interpretation and review in the context of the unique facts and circumstances of any particular transaction. The Articles of Incorporation of the Company do not provide for a lesser percentage in any such situation.

The Articles of Incorporation authorize the Board of Directors to reclassify any unissued shares of Common Stock into other classes or series of classes of stock and to establish the number of shares in each class or series and to set the preferences, conversion and other rights, voting powers, restrictions, limitations and restrictions on ownership, limitations as to dividends or other distributions, qualifications and terms or conditions of redemption for each such class or series.

TRANSFER AGENT AND REGISTRAR

The transfer agent and registrar for the Common Stock will be ChaseMellon Shareholder Services.

PREFERRED STOCK

Preferred Stock may be issued from time to time, in one or more series, as authorized by the Board of Directors. No Preferred Stock is currently issued or outstanding. Prior to the issuance of shares of each series, the Board of Directors is required by the MGCL and the Company's Articles of Incorporation to fix for each series the terms, preferences, conversion or other rights, voting powers, restrictions, limitations as to distributions, qualifications and terms or conditions of redemption, as permitted by Maryland law. Because the Board of Directors has the power to establish the preferences, powers and rights of each series of Preferred Stock, it may afford the holders of any series of Preferred Stock preferences, powers and rights, voting or otherwise, senior to the rights of holders of shares of Common Stock. The issuance of Preferred Stock could have the effect of delaying or preventing a change of control of the Company that might involve a premium price for holders of Common Stock or otherwise be in their best interest. The Board of Directors has no present plans to issue any Preferred Stock.

RESTRICTIONS ON OWNERSHIP AND TRANSFER

Ownership Limits. For the Company to qualify as a REIT under the Code, no more than 50% in value of its outstanding shares of stock may be owned, actually or constructively, by five or fewer individuals (as defined in the Code to include certain entities) during the last half of a taxable year (other than the first year for which an election to be treated as a REIT has been made). In addition, if the Company, or an owner of 10% or more of the Company, actually or constructively owns 10% or more of a tenant of the Company (or a tenant of any partnership in which the Company is a partner), the rent received by the Company (either directly or through any such partnership) from such tenant will not be qualifying income for purposes of the REIT gross income tests of the Code. A REIT's stock must also be beneficially owned by 100 or more persons during at least 335 days of a taxable year of twelve months or during a proportionate part of a shorter taxable year (other than the first year for which an election to be treated as a REIT has been made).

Because the Company expects to qualify as a REIT, the Articles of Incorporation contain restrictions on the ownership and transfer of Common Stock which are intended to assist the Company in complying with these requirements. The Ownership Limit set forth in the Company's Articles of Incorporation provides that, subject to certain specified exceptions, no person or entity may own, or be deemed to own by virtue of the applicable constructive ownership provisions of the Code, more than 7.0% (by number or value, whichever is more restrictive) of the outstanding shares of Common Stock. The constructive ownership rules are complex, and may cause shares of Common Stock owned actually or constructively by a group of related individuals and/or entities to be constructively owned by one individual or entity. As a result, the acquisition of less than 7.0% of the shares of Common Stock (or the acquisition of an interest in an entity that owns, actually or constructively, Common

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Stock) by an individual or entity, could, nevertheless cause that individual or entity, or another individual or entity, to own constructively in excess of 7.0% of the outstanding Common Stock and thus violate the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors. The Board of Directors may, but in no event will be required to, waive the Ownership Limit with respect to a particular stockholder if it determines that such ownership will not jeopardize the Company's status as a REIT and the Board of Directors otherwise decides such action would be in the best interest of the Company. As a condition of such waiver, the Board of Directors may require an opinion of counsel satisfactory to it and/or undertakings or representations from the applicant with respect to preserving the REIT status of the Company. The Board of Directors has obtained such undertakings and representations from John B. Kilroy, Sr. and John B. Kilroy, Jr. and has waived the Ownership Limit with respect to the actual and constructive ownership (and to any constructive ownership securities therefrom) of Common Stock by John B. Kilroy, Sr. and John B. Kilroy, Jr. Consequently, John B. Kilroy, Sr., John B. Kilroy, Jr., members of their families and entities (including the Operating Partnership) which are deemed to own the Kilroys' Common Stock under the constructive ownership rules of the Code will be permitted to own, in the aggregate, actually or constructively, up to 21% (by number of shares or value, whichever is more restrictive) of the outstanding Common Stock. See "Description of Capital Stock--Restrictions on Ownership and Transfer--Ownership Limits."

The Company's Articles of Incorporation further prohibits (i) any person from actually or constructively owning shares of stock of the Company that would result in the Company being "closely held" under Section 856(h) of the Code or otherwise cause the Company to fail to qualify as a REIT, and (ii) any person from transferring shares of stock of the Company if such transfer would result in shares of stock of the Company being owned by fewer than 100 persons. Any person who acquires or attempts or intends to acquire actual or constructive ownership of shares of stock of the Company that will or may violate any of the foregoing restrictions on transferability and ownership is required to give notice immediately to the Company and provide the Company with such other information as the Company may request in order to determine the effect of such transfer on the Company's status as a REIT. The foregoing restrictions on transferability and ownership will not apply if the Board of Directors determines that it is no longer in the best interest of the Company to attempt to qualify, or to continue to qualify, as a REIT. Except as otherwise described above, any change in the Ownership Limit would require an amendment to the Articles of Incorporation. Amendments to the Articles of Incorporation require the affirmative vote of holders owning at least two- thirds of the shares of the Company's capital stock outstanding and entitled to vote thereon.

Pursuant to the Articles of Incorporation, if any purported transfer of Common Stock of the Company or any other event would otherwise result in any person violating the Ownership Limit or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors, then any such purported transfer will be void and of no force or effect with respect to the purported transferee (the "Prohibited Transferee") as to that number of shares in excess of the Ownership Limit or such other limit, and the Prohibited Transferee shall acquire no right or interest (or, in the case of any event other than a purported transfer, the person or entity holding record title to any such excess shares (the "Prohibited Owner") shall cease to own any right or interest) in such excess shares. Any such excess shares described above will be transferred automatically, by operation of law, to a trust, the beneficiary of which will be a qualified charitable organization selected by the Company (the "Beneficiary"). Such automatic transfer shall be deemed to be effective as of the close of business on the business day prior to the date of such violative transfer. Within 20 days of receiving notice from the Company of the transfer of shares to the trust, the trustee of the trust (who shall be designated by the Company and be unaffiliated with the Company and any Prohibited Transferee or Prohibited Owner) will be required to sell such excess shares to a person or entity who could own such shares without violating the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors, and distribute to the Prohibited Transferee or Prohibited Owner an amount equal to the lesser of the price paid by the Prohibited Transferee or Prohibited Owner for such excess shares or the sales proceeds received by the trust for such excess shares. In the case of any excess shares resulting from any event other than a transfer, or from a transfer for no consideration (such as a gift), the trustee will be required

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to sell such excess shares to a qualified person or entity and distribute to the Prohibited Owner an amount equal to the lesser of the Market Price (as defined in the Company's Articles of Incorporation) of such excess shares as of the date of such event or the sales proceeds received by the trust for such excess shares. In either case, any proceeds in excess of the amount distributable to the Prohibited Transferee or Prohibited Owner, as applicable, will be distributed to the Beneficiary. Prior to a sale of any such excess shares by the trust, the trustee will be entitled to receive, in trust for the Beneficiary, all dividends and other distributions paid by the Company with respect to such excess shares, and also will be entitled to exercise all voting rights with respect to such excess shares. Subject to Maryland law, effective as of the date that such shares have been transferred to the trust, the trustee shall have the authority (at the trustee's sole discretion) (i) to rescind as void any vote cast by a Prohibited Transferee or Prohibited Owner, as applicable, prior to the discovery by the Company that such shares have been transferred to the trust and (ii) to recast such vote in accordance with the desires of the trustee acting for the benefit of the Beneficiary. However, if the Company has already taken irreversible corporate action, then the trustee shall not have the authority to rescind and recast such vote. Any dividend or other distribution paid to the Prohibited Transferee or Prohibited Owner (prior to the discovery by the Company that such shares had been automatically transferred to a trust as described above) will be required to be repaid to the trustee upon demand for distribution to the Beneficiary. In the event that the transfer to the trust as described above is not automatically effective (for any reason) to prevent violation of the Ownership Limit or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors, then the Articles of Incorporation provide that the transfer of the excess shares will be void.

In addition, shares of stock of the Company held in the trust shall be deemed to have been offered for sale to the Company, or its designee, at a price per share equal to the lesser of (i) the price per share in the transaction that resulted in such transfer to the trust (or, in the case of a devise or gift, the Market Price at the time of such devise or gift) and (ii) the Market Price on the date the Company, or its designee, accepts such offer. The Company shall have the right to accept such offer until the trustee has sold the shares of stock held in the trust. Upon such a sale to the Company, the interest of the Beneficiary in the shares sold shall terminate and the trustee shall distribute the net proceeds of the sale to the Prohibited Transferee or Prohibited Owner.

If any purported transfer of shares of Common Stock would cause the Company to be beneficially owned by fewer than 100 persons, such transfer will be null and void in its entirety and the intended transferee will acquire no rights to the stock.

All certificates representing shares of Common Stock will bear a legend referring to the restrictions described above. The foregoing ownership limitations could delay, defer or prevent a transaction or a change in control of the Company that might involve a premium price for the Common Stock or otherwise be in the best interest of stockholders.

Under the Articles of Incorporation, every owner of a specified percentage (or more) of the outstanding shares of Common Stock must file a completed questionnaire with the Company containing information regarding their ownership of such shares, as set forth in the Treasury Regulations. Under current Treasury Regulations, the percentage will be set between 0.5% and 5.0%, depending upon the number of record holders of the Company's shares. In addition, each stockholder shall upon demand be required to disclose to the Company in writing such information as the Company may request in order to determine the effect, if any, of such stockholder's actual and constructive ownership of Common Stock on the Company's status as a REIT and to ensure compliance with the Ownership Limit, or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors.

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CERTAIN PROVISIONS OF MARYLAND LAW AND OF
THE COMPANY'S ARTICLES OF INCORPORATION AND BYLAWS

The following paragraphs summarize certain provisions of the MGCL and the Company's Articles of Incorporation and Bylaws. The summary does not purport to be complete and is subject to and qualified in its entirety by reference to the MGCL and the Company's Articles of Incorporation and Bylaws, copies of which are exhibits to the Registration Statement of which this Prospectus is a part.

BOARD OF DIRECTORS

The Company's Articles of Incorporation provide that the number of directors of the Company shall be established by the Bylaws but shall not be less than the minimum number required by the MGCL, which in the case of the Company is three. The Bylaws currently provide that the Board of Directors will consist of not fewer than five nor more than 13 members. Any vacancy (except for a vacancy caused by removal) will be filled, at any regular meeting or at any special meeting called for that purpose, by a majority of the remaining directors or, in the case of a vacancy resulting from an increase in the number of directors, by a majority of the entire Board of Directors. A vacancy resulting from removal will be filled by the stockholders at the next annual meeting of stockholders or at a special meeting of the stockholders called for that purpose. The Articles of Incorporation and Bylaws provide that a majority of the Board must be "Independent Directors." An "Independent Director" is a director who is not an employee, officer or affiliate of the Company or a subsidiary or division thereof, or a relative of a principal executive officer, or who is not an individual member of an organization acting as advisor, consultant or legal counsel, receiving compensation on a continuing basis from the Company in addition to director's fees.

Pursuant to the Articles of Incorporation, the directors are divided into three classes as nearly equal in size as practicable. One class will hold office initially for a term expiring at the annual meeting of stockholders to be held in 1998, another class will hold office initially for a term expiring at the annual meeting of stockholders to be held in 1999 and another class will hold office initially for a term expiring at the annual meeting of stockholders to be held in 2000. As the term of each class expires, directors in that class will be elected for a term of three years and until their successors are duly elected and qualified and the directors in the other two classes will continue in office. The Company believes that classification of the Board of Directors will help to assure the continuity and stability of the Company's business strategies and policies as determined by the Board of Directors.

The classified director provision could have the effect of making the removal of incumbent directors more time consuming and difficult, which could discourage a third party from making a tender offer or otherwise attempting to obtain control of the Company, even though such an attempt might be beneficial to the Company and its stockholders. At least two annual meetings of stockholders, instead of one, will generally be required to effect a change in a majority of the Board of Directors. Thus, the classified board provision could increase the likelihood that incumbent directors will retain their positions. Holders of shares of Common Stock will have no right to cumulative voting for the election of directors. Consequently, at each annual meeting of stockholders, the holders of a majority of the shares of Common Stock will be able to elect all of the successors of the class of directors whose term expires at that meeting.

REMOVAL OF DIRECTORS

While the Company's Articles of Incorporation and the MGCL empower the stockholders to fill vacancies in the Board of Directors that are caused by the removal of a director, the Company's Articles of Incorporation preclude stockholders from removing incumbent directors except upon a substantial affirmative vote. Specifically, the Company's Articles of Incorporation provide that a director may be removed only for cause and only by the affirmative vote of at least two-thirds of the votes entitled to be cast in the election of directors. Under the MGCL, the term "cause" is not defined and is, therefore, subject to Maryland common law and to judicial interpretation and review in the context of the unique facts and circumstances of any particular situation.

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This provision, when coupled with the provision in the Bylaws authorizing the Board of Directors to fill vacant directorships, precludes stockholders from removing incumbent directors except upon a substantial affirmative vote and filling the vacancies created by such removal with their own nominees.

BUSINESS COMBINATIONS

Under the MGCL, certain "business combinations" (including a merger, consolidation, share exchange, or, in certain circumstances, an asset transfer or issuance or reclassification of equity securities) between the Company and any person who beneficially owns, directly or indirectly, 10% or more of the voting power of the Company's shares, or an affiliate of the Company who, at any time within the two-year period prior to the date in question, was the beneficial owner of 10% or more of the voting power of the Company's then outstanding shares (an "Interested Stockholder") or an affiliate thereof are prohibited for five years after the most recent date on which the Interested Stockholder became an Interested Stockholder. Thereafter, any such business combination must be recommended by the Board of Directors and approved by the affirmative vote of at least (i) 80% of the votes entitled to be cast by holders of outstanding shares of the Company's voting stock and (ii) two-thirds of the votes entitled to be cast by holders of outstanding shares of the Company's voting stock other than shares held by the Interested Stockholder with whom the business combination is to be effected, unless, among other things, the Company's stockholders receive a minimum price (as defined in the MGCL) for their shares of stock and the consideration is received in cash or in the same form as previously paid by the Interested Stockholder for its shares. These provisions of the MGCL do not apply, however, to business combinations that are approved or exempted by the Board of Directors prior to the time that the Interested Stockholder becomes an Interested Stockholder. The Company's Board of Directors has resolved to opt out of the business combinations provisions of the MGCL, and such resolutions also require that any decision to opt back in be subject to the approval of holders of a majority of the shares of Common Stock. As a result of the Company's decision to opt out of the business combinations provisions of the MGCL, an Interested Stockholder would be able to effect a "business combination" without complying with the requirements set forth above. The decision to opt out of the provisions may have the effect of making it easier for stockholders who become Interested Stockholders to consummate a business combination involving the Company. However, no assurance can be given that any such business combination would be consummated or, if consummated, would result in a purchase of shares of Common Stock from any stockholder at a premium.

CONTROL SHARE ACQUISITIONS

The MGCL provides that "control shares" of the Company acquired in a "control share acquisition" have no voting rights except to the extent approved by a vote of two-thirds of the votes entitled to be cast on the matter, excluding shares owned by the acquiror or by officers or directors who are employees of the Company. "Control shares" are voting shares of stock which, if aggregated with all other such shares of stock previously acquired by the acquiror, or in respect of which the acquiror is able to exercise or direct the exercise of voting power (except solely by revocable proxy), would entitle the acquiror to exercise voting power in electing directors within one of the following ranges of voting power: (i) one-fifth or more but less than one-third; (ii) one-third or more but less than a majority; or (iii) a majority of all voting power. "Control shares" do not include shares of stock the acquiring person is then entitled to vote as a result of having previously obtained stockholder approval. A "control share acquisition" means the acquisition of control shares, subject to certain exceptions.

A person who has made or proposes to make a control share acquisition, upon satisfaction of certain conditions (including an undertaking to pay expenses), may compel the Board of Directors to call a special meeting of stockholders to be held within 50 days of demand to consider voting rights for the shares. If no request for a meeting is made, the Company may itself present the question at any stockholders' meeting.

If voting rights are not approved at the stockholders' meeting or if the acquiring person does not deliver an acquiring person statement as required by the MGCL, then, subject to certain conditions and limitations, the Company may redeem any or all of the control shares (except those for which voting rights have previously

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been approved) for fair value determined, without regard to the absence of voting rights for the control shares, as of the date of the last control share acquisition by the acquiror or of any meeting of stockholders at which the voting rights of such shares are considered and not approved. If voting rights for control shares are approved at a stockholders' meeting and the acquiror becomes entitled to vote a majority of the shares of stock entitled to vote, all other stockholders may exercise appraisal rights. The fair value of the shares of stock as determined for purposes of such appraisal rights may not be less than the highest price per share paid by the acquiror in the control share acquisition, and certain limitations and restrictions otherwise applicable to the exercise of dissenters' rights do not apply in the context of a control share acquisition.

The control share acquisition statute does not apply to shares acquired in a merger, consolidation or share exchange if the Company is a party to the transaction, or to acquisitions approved or exempted by the Company's Articles of Incorporation or Bylaws. The Bylaws of the Company contain a provision exempting from the control share acquisition statute any and all acquisitions by any person of the Company's shares of stock. Although there can be no assurance that such provision will not be amended or eliminated at any time in the future, the Company's Board of Directors has resolved that the provision may not be amended or eliminated without the approval of the holders of at least a majority of the shares of Common Stock. As a result of the Company's decision to opt out of the "control share acquisition" provisions of the MGCL, stockholders who acquire a substantial block of Common Stock are not precluded from exercising full voting rights with respect to their shares on all matters without first obtaining the approval of other stockholders entitled to vote. This may have the effect of making it easier for any such control share stockholder to effect a business combination with the Company. However, no assurance can be given that any such business combination would be consummated or, if consummated, would result in a purchase of shares of Common Stock from any stockholder at a premium.

AMENDMENT TO THE ARTICLES OF INCORPORATION AND BYLAWS

The Company's Articles of Incorporation may not be amended without the affirmative vote of at least two-thirds of the shares of capital stock outstanding and entitled to vote thereon voting together as a single class. Other than provisions of the Bylaws (i) opting out of the control share acquisition statute, (ii) requiring approval by the Independent Directors for selection of operators of the Properties or of transactions involving John B. Kilroy, Sr. and John B. Kilroy, Jr. and their affiliates and (iii) those governing amendment of the Bylaws, each of which may be amended only with the approval of a majority of the shares of capital stock entitled to vote, the Company's Bylaws may be amended by the vote of a majority of the Board of Directors or the shares of the Company's capital stock entitled to vote thereon.

MEETINGS OF STOCKHOLDERS

The Company's Bylaws provide for annual meetings of stockholders, commencing with the year 1998, to elect the Board of Directors and transact such other business as may properly be brought before the meeting. Special meetings of stockholders may be called by the President, the Board of Directors or the Chairman of the Board and shall be called at the request in writing of the holders of 50% or more of the outstanding stock of the Company entitled to vote.

The MGCL provides that any action required or permitted to be taken at a meeting of stockholders may be taken without a meeting by unanimous written consent, if such consent sets forth such action and is signed by each stockholder entitled to vote on the matter and a written waiver of any right to dissent is signed by each stockholder entitled to notice of the meeting but not entitled to vote at it.

ADVANCE NOTICE OF DIRECTOR NOMINATIONS AND NEW BUSINESS

The Company's Bylaws provide that (i) with respect to an annual meeting of stockholders, nominations of persons for election to the Board of Directors and the proposal of business to be considered by stockholders may be made only
(a) pursuant to the Company's notice of the meeting, (b) by or at the direction of the Board of Directors or (c) by a stockholder who is entitled to vote at the meeting and has complied with the advance notice

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procedures set forth in the Bylaws, and (ii) with respect to special meetings of stockholders, only the business specified in the Company's notice of meeting may be brought before the meeting of stockholders.

The provisions in the Company's Articles of Incorporation on classification of the Board of Directors and amendments to the Articles of Incorporation and the advance notice provisions of the Bylaws could have the effect of discouraging a takeover or other transaction in which holders of some, or a majority, of the shares of Common Stock might receive a premium for their shares of Common Stock over the then prevailing market price or which such holders might believe to be otherwise in their best interests.

DISSOLUTION OF THE COMPANY

Under the MGCL, the Company may be dissolved by (i) the affirmative vote of a majority of the entire Board of Directors declaring such dissolution to be advisable and directing that the proposed dissolution be submitted for consideration at any annual or special meeting of stockholders, and (ii) upon proper notice, stockholder approval by the affirmative vote of the holders of two-thirds of the total number of shares of capital stock outstanding and entitled to vote thereon voting as a single class.

LIMITATION OF DIRECTORS' AND OFFICERS' LIABILITY

The Company's officers and directors are and will be indemnified under Maryland law, the Company's Articles of Incorporation of the Company and the Partnership Agreement of the Operating Partnership against certain liabilities. The Articles of Incorporation and Bylaws require the Company to indemnify its directors and officers to the fullest extent permitted from time to time by the laws of Maryland.

The MGCL permits a corporation to indemnify its directors and officers and certain other parties against judgments, penalties, fines, settlements, and reasonable expenses actually incurred by them in connection with any proceeding to which they may be made a party by reason of their service in those or other capacities unless it is established that (i) the act or omission of the director or officer was material to the matter giving rise to the proceeding and was committed in bad faith or was the result of active and deliberate dishonesty, (ii) the director or officer actually received an improper personal benefit in money, property or services, or (iii) in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful. Indemnification may be made against judgments, penalties, fines, settlements and reasonable expenses actually incurred by the director or officer in connection with the proceeding; provided, however, that if the proceeding is one by or in the right of the corporation, indemnification may not be made with respect to any proceeding in which the director or officer has been adjudged to be liable to the corporation. In addition, a director or officer may not be indemnified with respect to any proceeding charging improper personal benefit to the director or officer in which the director or officer was adjudged to be liable on the basis that personal benefit was received. The termination of any proceeding by conviction, or upon a plea of nolo contendere or its equivalent, or an entry of any order of probation prior to judgment, creates a rebuttable presumption that the director or officer did not meet the requisite standard of conduct required for indemnification to be permitted.

The MGCL permits the articles of incorporation of a Maryland corporation to include a provision limiting the liability of its directors and officers to the corporation and its stockholders for money damages, subject to specified restrictions, and the Articles of Incorporation of the Company contain this provision. The law does not, however, permit the liability of directors and officers to the corporation or its stockholders to be limited to the extent that (i) it is proved that the person actually received an improper personal benefit in money, property or services, (ii) a judgment or other final adjudication is entered in a proceeding based on a finding that the person's action, or failure to act, was committed in bad faith or was the result of active and deliberate dishonesty and was material to the cause of action adjudicated in the proceeding or (iii) in the case of any criminal proceeding, the director had reasonable cause to believe that the act or failure to act was unlawful. This provision does not limit the ability of the Company or its stockholders to obtain other relief, such as an injunction or rescission.

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The Partnership Agreement also provides for indemnification of the Company, as general partner, and its officers and directors to the same extent indemnification is provided to officers and directors of the Company in its Articles of Incorporation, and limits the liability of the Company and its officers and directors to the Operating Partnership and the partners of the Operating Partnership to the same extent liability of officers and directors of the Company to the Company and its stockholders is limited under the Company's Articles of Incorporation. See "Partnership Agreement of the Operating Partnership--Indemnification."

Insofar as indemnification for liability arising under the Securities Act may be permitted to directors, officers or persons controlling the Company pursuant to the foregoing provisions, the Company has been informed that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

INDEMNIFICATION AGREEMENTS

The Company will enter into indemnification agreements with each of its executive officers and directors. The indemnification agreements will require, among other matters, that the Company indemnify its executive officers and directors to the fullest extent permitted by law and advance to the executive officers and directors all related expenses, subject to reimbursement if it is subsequently determined that indemnification is not permitted. Under the agreements, the Company must also indemnify and advance all expenses incurred by executive officers and directors seeking to enforce their rights under the indemnification agreements and may cover executive officers and directors under the Company's directors' and officers' liability insurance. Although the form of indemnification agreement offers substantially the same scope of coverage afforded by law, it provides greater assurance to directors and executive officers that indemnification will be available, because, as a contract, it cannot be modified unilaterally in the future by the Board of Directors or the stockholders to eliminate the rights it provides.

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PARTNERSHIP AGREEMENT OF THE OPERATING PARTNERSHIP

The following summary of the Amended and Restated Agreement of Limited Partnership of the Operating Partnership (the "Partnership Agreement") and the descriptions of certain provisions set forth elsewhere in this Prospectus, are qualified in their entirety by reference to the Partnership Agreement, which is filed as an exhibit to the Registration Statement of which this Prospectus is a part. See "Additional Information."

MANAGEMENT

The Operating Partnership is organized as a Delaware limited partnership pursuant to the terms of the Partnership Agreement. The Company will be the sole general partner of, and will initially hold approximately 80.8% of the economic interests in, the Operating Partnership. The Company will conduct substantially all of its business through the Operating Partnership, except for development and certain other services (which will be conducted through the Services Company) in order to preserve the Company's REIT status. The Operating Partnership will own a 95.0% economic interest in the Services Company. Generally, pursuant to the Partnership Agreement, the Company, as the sole general partner of the Operating Partnership, will have full, exclusive and complete responsibility and discretion in the management and control of the Operating Partnership, including the ability to cause the Operating Partnership to enter into certain major transactions including acquisitions, dispositions and refinancings and to cause changes in the Operating Partnership's line of business and distribution policies.

The Continuing Investors, as limited partners of the Operating Partnership, will have no authority to transact business for, or participate in the management activities or decisions of, the Operating Partnership, except as provided in the Partnership Agreement and as required by applicable law.

INDEMNIFICATION

To the extent permitted by law, the Partnership Agreement provides for indemnification of the Company, as general partner, its officers and directors and such other persons as the Company may designate to the same extent indemnification is provided to officers and directors of the Company in its Articles of Incorporation, and limits the liability of the Company and its officers and directors to the Operating Partnership to the same extent liability of officers and directors of the Company is limited under the Articles of Incorporation.

TRANSFERABILITY OF INTERESTS

Except for a transaction described in the following two paragraphs, the Partnership Agreement provides that the Company may not voluntarily withdraw from the Operating Partnership, or transfer or assign its interest in the Operating Partnership, without the consent of the holders of at least 60% of the partner interests (including the interests of the Company, which will represent approximately 80.8% of the total partner interests upon consummation of the Offering). Pursuant to the Partnership Agreement, the limited partners have agreed not to transfer, assign, sell, encumber or otherwise dispose of, without the consent of the Company, their interest in the Operating Partnership, other than to family members or accredited investors who agree to assume the obligations of the transferor under the Partnership Agreement subject to a right of first refusal for the benefit of the Company. The Continuing Investors are subject to additional restrictions on their ability to transfer shares of Common Stock. See "Underwriting."

The Company may not engage in any merger, consolidation or other combination with or into another person, sale of all or substantially all of its assets or any reclassification, recapitalization or change of its outstanding equity interests (each a "Termination Transaction") unless the Termination Transaction has been approved by holders of at least 60% of the Units (including Units held by the Company, which will represent approximately 80.8% of all Units outstanding upon consummation of the Offering) and in connection with which all limited partners either will receive, or will have the right to elect to receive, for each Unit an amount of cash, securities or other property equal to the product of the number of shares of Common Stock into which each Unit

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is then exchangeable and the greatest amount of cash, securities or other property paid to the holder of one share of Common Stock in consideration of one share of Common Stock pursuant to the Termination Transaction. If, in connection with the Termination Transaction, a purchase, tender or exchange offer shall have been made to and accepted by the holders of the outstanding shares of Common Stock, each holder of Units will receive, or will have the right to elect to receive, the greatest amount of cash, securities or other property which such holder would have received had it exercised its right to redemption and received shares of Common Stock in exchange for its Units immediately prior to the expiration of such purchase, tender or exchange offer and had thereupon accepted such purchase, tender or exchange offer.

The Company may also merge or otherwise combine its assets with another entity if the following conditions are met: (i) substantially all of the assets directly or indirectly owned by the surviving entity are held directly or indirectly by the Operating Partnership or another limited partnership or limited liability company which is the survivor of a merger, consolidation or combination of assets with the Operating Partnership (in each case, the "Surviving Partnership"); (ii) the limited partners own a percentage interest of the Surviving Partnership based on the relative fair market value of the net assets of the Operating Partnership and the other net assets of the Surviving Partnership immediately prior to the consummation of such transaction; (iii) the rights, preferences and privileges of the limited partners in the Surviving Partnership are at least as favorable as those in effect immediately prior to the consummation of such transaction and as those applicable to any other limited partners or non-managing members of the Surviving Partnership; and (iv) such rights of the limited partners include the right to exchange their interests in the Surviving Partnership for at least one of the following: (a) the consideration available to such persons pursuant to the preceding paragraph, or (b) if the ultimate controlling person of the Surviving Partnership has publicly traded common equity securities, such common equity securities, with an exchange ratio based on the relative fair market value of such securities and the Common Stock. For purposes of this paragraph, the determination of relative fair market values and rights, preferences and privileges of the limited partners shall be reasonably determined by the Company's Board of Directors as of the time of the Termination Transaction and, to the extent applicable, the values shall be no less favorable to the limited partners than the relative values reflected in the terms of the Termination Transaction.

In respect of any transaction described in the preceding two paragraphs, the Company is required to use its commercially reasonable efforts to structure such transaction to avoid causing the limited partners to recognize gain for federal income tax purposes by virtue of the occurrence of or their participation in such transaction. The Operating Partnership will also use commercially reasonable efforts to cooperate with the limited partners to minimize any taxes payable in connection with any repayment, refinancing, replacement or restructuring of indebtedness, or any sale, exchange or any other disposition of assets, of the Operating Partnership.

ISSUANCE OF ADDITIONAL UNITS

As sole general partner of the Operating Partnership, the Company has the ability to cause the Operating Partnership to issue additional Units representing general and limited partnership interests in the Operating Partnership, including preferred Units of limited partnership interests.

CAPITAL CONTRIBUTION

The Partnership Agreement provides that if the Operating Partnership requires additional funds at any time or from time to time in excess of funds available to the Operating Partnership from borrowings or capital contributions, the Company may borrow such funds from a financial institution or other lender or through public or private debt offerings and lend such funds to the Operating Partnership on the same terms and conditions as are applicable to the Company's borrowing of such funds. As an alternative to borrowing funds required by the Operating Partnership, the Company may contribute the amount of such required funds as an additional capital contribution to the Operating Partnership. If the Company so contributes additional capital to the Operating Partnership, the Company's partnership interest in the Operating Partnership will be increased on a proportionate basis. Conversely, the partnership interests of the limited partners will be decreased on a proportionate basis in

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the event of additional capital contributions by the Company. See "Policies With Respect to Certain Activities--Financing."

AWARDS UNDER STOCK INCENTIVE PLAN

If options granted in connection with the Stock Incentive Plan are exercised at any time or from time to time, or restricted shares of Common Stock are issued under the Stock Incentive Plan, the Partnership Agreement requires the Company to contribute to the Operating Partnership as an additional contribution the exercise price received by the Company in connection with the issuance of shares of Common Stock to such exercising participant or the proceeds received by the Company upon issuance of the shares. Upon such contribution the Company will be issued a number of Units in the Operating Partnership equal to the number of shares of Common Stock so issued.

REDEMPTION/EXCHANGE RIGHTS

Limited partners will have rights to require the Operating Partnership to redeem part or all of their Units for cash (based upon the fair market value of an equivalent number of shares of Common Stock at the time of such redemption) or the Company may elect to exchange such Units for shares of Common Stock (on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of certain rights, certain extraordinary distributions and similar events), provided, however, that if the Company does not elect to exchange such Units for shares of Common Stock, a holder of Units that is a corporation or a limited liability company may require the Company to issue Common Stock in lieu thereof, subject to the Ownership Limit or such other limit as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors, as applicable. The Company presently anticipates that it will elect to issue Common Stock in exchange for Units in connection with each such redemption request, rather than having the Operating Partnership pay cash. With each such redemption or exchange, the Company's percentage ownership interest in the Operating Partnership will increase. This redemption/exchange right may be exercised by limited partners from time to time, in whole or in part, subject to the limitations that such right may not be exercised (i) prior to the expiration of two years following the consummation of the Offering or (ii) at any time to the extent such exercise would result in any person actually or constructively owning Common Stock in excess of the Ownership Limit or such other amount as provided in the Company's Articles of Incorporation or as otherwise permitted by the Board of Directors, as applicable, assuming Common Stock was issued in such exchange. See "Description of Capital Stock--Restrictions on Ownership and Transfer." In addition, under certain circumstances 50% of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries may be redeemed prior to the second anniversary of the consummation of the Offering in connection with the obligation of such Continuing Investors to indemnify the Company in connection with the Formation Transactions. See "Formation and Structure of the Company--Allocation of Consideration in the Formation Transactions."

REGISTRATION RIGHTS

For a description of certain registration rights held by the Continuing Investors, see "Shares Available for Future Sale--Redemption/Exchange Rights/Registration Rights."

TAX MATTERS

Pursuant to the Partnership Agreement, the Company will be the tax matters partner of the Operating Partnership and, as such, will have authority to make tax elections under the Code on behalf of the Operating Partnership.

The net income or net loss of the Operating Partnership will generally be allocated to the Company and the limited partners in accordance with their respective percentage interests in the Operating Partnership, subject to compliance with the provisions of Sections 704(b) and 704(c) of the Code and the Treasury Regulations promulgated thereunder. See "Federal Income Tax Consequences--Tax Aspects of the Operating Partnership."

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OPERATIONS

The Partnership Agreement requires that the Operating Partnership be operated in a manner that will enable the Company to satisfy the requirements for being classified as a REIT and to avoid any federal income tax liability. The Partnership Agreement provides that the net operating cash revenues of the Operating Partnership, as well as net sales and refinancing proceeds, will be distributed from time to time as determined by the Company (but not less frequently than quarterly) pro rata in accordance with the partners' respective percentage interests. Pursuant to the Partnership Agreement, the Operating Partnership will assume and pay when due, or reimburse the Company for payment of, all expenses it incurs relating to the ownership and operation of, or for the benefit of, the Operating Partnership and all costs and expenses relating to the operations of the Company.

DUTIES AND CONFLICTS

Except as otherwise set forth in "Policies with Respect to Certain Activities--Conflicts of Interest Policies" and "Management--Employment Agreements," any limited partner of the Operating Partnership may engage in other business activities outside the Operating Partnership, including business activities that directly compete with the Operating Partnership.

CERTAIN LIMITED PARTNER APPROVAL RIGHTS

The Partnership Agreement provides that if the limited partners own at least 5% of the outstanding Units (including Units held by the Company), the Company shall not, on behalf of the Operating Partnership, take any of the following actions without the prior consent of the holders of more than 50% (excluding Units held by the Company) of the Units representing limited partner interests:
(i) dissolve the Operating Partnership, other than incident to a merger or sale of substantially all of the Company's assets; or (ii) prior to the seventh anniversary of the consummation of the Offering, sell the Office Property located at 2260 E. Imperial Highway, at Kilroy LAX, other than incident to a merger or sale of substantially all of the Company's assets.

TERM

The Operating Partnership will continue in full force and effect for 99 years or until sooner dissolved pursuant to the terms of the Partnership Agreement.

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SHARES AVAILABLE FOR FUTURE SALE

GENERAL

Upon the consummation of the Offering and the Formation Transactions, the Company will have outstanding 11,360,000 shares of Common Stock (including 60,000 restricted shares of Common Stock issued to an officer of the Company who is not a Continuing Investor and excluding the 1,695,000 shares which are subject to the Underwriters' over-allotment option), of which the 11,300,000 issued in the Offering (or 12,995,000 if the Underwriters' overallotment option is exercised in full) will be freely tradeable in the public market by persons other than "affiliates" of the Company without restriction or registration under the Securities Act.

Each of the Continuing Investors has agreed not to, directly or indirectly, offer, sell, offer to sell, contract to sell, pledge, grant any option to purchase or otherwise sell or dispose (or announce any offer, sale, offer of sale, contract of sale, pledge, grant of any option to purchase or other sale or disposition) of any Units or shares of Common Stock or other capital stock of the Company, or any securities convertible or exercisable or exchangeable for any Units or shares of Common Stock or other capital stock for a period of two years from the date of this Prospectus, and the Company has agreed not to offer, sell, offer to sell, contract to sell, pledge, grant any option to purchase or otherwise sell or dispose (or announce any offer, sale, offer of sale, contract of sale, pledge, grant of any option to purchase or other sale or disposition) of any (other than pursuant to the Stock Incentive Plan) shares of Common Stock or other capital stock of the Company, or any securities convertible or exercisable or exchangeable for any Units or shares of Common Stock or other capital stock of the Company, for a period of 180 days from the date of this Prospectus, in each case without the prior written consent of Prudential Securities Incorporated, on behalf of the Underwriters, subject to certain limited exceptions. Notwithstanding the foregoing, 50% of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries in connection with the Formation Transactions will be pledged to secure their indemnification obligations pursuant to an agreement with the Company. See "Formation and Structure of the Company."

The shares of Common Stock owned by "affiliates" of the Company, the 60,000 restricted shares of Common Stock issued to an officer of the Company who is not a Continuing Investor and the shares of Common Stock issuable upon exchange of Units (other than those issued pursuant to registration rights, as described below), will be subject to Rule 144 promulgated under the Securities Act ("Rule 144") and may not be sold in the absence of registration under the Securities Act unless an exemption from registration is available, including exemptions contained in Rule 144.

In general, under Rule 144 as currently in effect, a person (or persons whose shares are aggregated with them in accordance with Rule 144) who has beneficially owned "restricted shares" (defined generally as shares acquired from the issuer or an affiliate in a non-public transaction) for at least two years, as well as any person who purchased unrestricted shares on the open market who may be deemed an affiliate of the Company, would be entitled to sell, subject to certain manner of sale, public information and notice requirements, within any three-month period, a number of shares of Common Stock that does not exceed the greater of 1% of the then-outstanding number of shares of Common Stock or 1% of the average weekly trading volume of those shares during the four calendar weeks preceding each such sale. After restricted shares are held for three years, a person who is not then deemed an affiliate of the Company is entitled to sell such shares under Rule 144 without regard to these volume limitations. Sales of shares of Common Stock by affiliates of the Company will continue to be subject to the volume limitations, unless resold under an effective registration statement under the Securities Act. The Commission has stated that it will re-issue a notice of proposed rulemaking which, if adopted in the form expected to be proposed, would shorten the applicable holding period under Rule 144(d) and Rule 144(k) to one and two years, respectively (from the current two- and three-year periods described above). The Company cannot predict whether such amendments will be proposed or adopted or the effect thereof on the trading market for its Common Stock.

The Company has established the Stock Incentive Plan for the purpose of attracting and retaining executive officers, directors and other key employees. See "Management--Stock Incentive Plan." Upon the consummation

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of the Offering, the Company will issue in the aggregate options to purchase 900,000 shares of Common Stock to executive officers, directors and certain key employees and has reserved 500,000 additional shares of Common Stock for future issuance under the Stock Incentive Plan.

Prior to the date of this Prospectus, there has been no public market for the shares of Common Stock. The shares of Common Stock have been approved for listing on the NYSE, subject to official notice of issuance. No prediction can be made as to the effect, if any, that future sales of shares of Common Stock (including sales pursuant to Rule 144) or the availability of shares of Common Stock for future sale will have on the market price prevailing from time to time. Sales of substantial amounts of shares of Common Stock (including shares of Common Stock issued upon the exercise of options or the exchange of Units), or the perception that such sales could occur, could adversely affect prevailing market prices of the shares of Common Stock and impair the Company's ability to obtain additional capital through the sale of equity securities. See "Risk Factors--Shares Available for Future Sale." For a description of certain restrictions on transfers of Common Stock held by certain stockholders of the Company, see "Underwriting" and "Description of Capital Stock--Restrictions on Ownership and Transfer."

REDEMPTION/EXCHANGE RIGHTS/REGISTRATION RIGHTS

Each limited partner of the Operating Partnership will have the right to require the Operating Partnership to redeem part or all of their Units for cash (based on the fair market value of an equivalent number of shares of Common Stock at the time of such redemption) or, at the election of the Company, to exchange such Units for shares of Common Stock, at any time beginning two years after the completion of the Offering subject to the obligation of John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries, with respect to 50% of their Units, to indemnify the Company in connection with the Formation Transactions. See "Formation and Structure of the Company--Allocation of Consideration in the Formation Transactions." If the Company does not elect to exchange such Units for shares of Common Stock, a Unitholder that is a corporation or a limited liability company may require the Company to issue shares of Common Stock in lieu of cash, subject to the Ownership Limit or such other amount as provided in the Company's Articles of Incorporation, as applicable. Upon completion of the Formation Transactions, an aggregate of approximately 2,692,374 Units will be held by limited partners of the Operating Partnership. If the Company elects to exchange Units for Common Stock, each Unit will be exchangeable for one share of Common Stock, subject to adjustment in the event of stock splits, distribution of rights, extraordinary dividends and similar events.

In order to protect the Company's status as a REIT, a holder of Units is prohibited from exchanging such Units for shares of Common Stock, to the extent that as a result of such exchange any person would own or would be deemed to own, actually or constructively, more than 7.0% of the Common Stock, except to the extent such holder has been granted an exception to the Ownership Limit. See "Description of Capital Stock--Restrictions on Ownership and Transfer."

The Company has granted the Continuing Investors receiving Units in connection with the Formation Transactions certain registration rights (collectively, the "Registration Rights") with respect to the shares of Common Stock acquired upon exchange of Units or otherwise (the "Registrable Shares"). The Company has agreed to file and generally keep continuously effective beginning two years after the completion of the Offering a registration statement covering the issuance of shares of Common Stock upon exchange of Units and the resale thereof. In addition, the Company has granted the Continuing Investors piggyback registration rights with respect to shares of Common Stock acquired by them by any means. The Company also has agreed to provide the Registration Rights to any other person who may become an owner of Units, provided such person provides the Company with satisfactory undertakings. The Company will bear expenses incident to its registration obligations upon exercise of the Registration Rights, including the payment of federal securities law and state Blue Sky registration fees, except that it will not bear any underwriting discounts or commissions or transfer taxes relating to registration of Registrable Shares.

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REINVESTMENT AND SHARE PURCHASE PLAN

The Company is considering the adoption of a Distribution Reinvestment and Share Purchase Plan that would allow stockholders to automatically reinvest cash distributions on their outstanding shares of Common Stock and/or Units to purchase additional shares of Common Stock at a discounted price and without the payment of any brokerage commission or service charge. Stockholders would also have the option of investing limited additional amounts by making cash payments. No decision has been made yet by the Company whether or not to adopt such a plan and there can be no assurance that such a plan will ever be adopted by the Company.

FEDERAL INCOME TAX CONSEQUENCES

The following summary of material federal income tax considerations regarding the Company and the Offering is based on current law, is for general information only and is not tax advice. The information set forth below, to the extent that it constitutes matters of law, summaries of legal matters or legal conclusions, is the opinion of Latham & Watkins, tax counsel to the Company, as to the material federal income tax considerations relevant to purchasers of the Common Stock. This discussion does not purport to deal with all aspects of taxation that may be relevant to particular stockholders in light of their personal investment or tax circumstances, or to certain types of stockholders subject to special treatment under the federal income tax laws, including, without limitation, certain financial institutions, life insurance companies, dealers in securities or currencies, stockholders holding Common Stock as part of a conversion transaction, as part of a hedge or hedging transaction, or as a position in a straddle for tax purposes, tax-exempt organizations (except to the extent discussed under the heading "--Taxation of Tax-Exempt Stockholders") or foreign corporations, foreign partnerships and persons who are not citizens or residents of the United States (except to the extent discussed under the heading "Taxation of Non-U.S. Stockholders"). In addition, the summary below does not consider the effect of any foreign, state, local or other tax laws that may be applicable to prospective stockholders.

EACH PROSPECTIVE PURCHASER IS ADVISED TO CONSULT HIS OR HER OWN TAX ADVISOR REGARDING THE SPECIFIC TAX CONSEQUENCES TO HIM OR HER OF THE PURCHASE, OWNERSHIP AND SALE OF THE COMMON STOCK, INCLUDING THE FEDERAL, STATE, LOCAL, FOREIGN AND OTHER TAX CONSEQUENCES OF SUCH PURCHASE, OWNERSHIP AND SALE AND OF POTENTIAL CHANGES IN APPLICABLE TAX LAWS.

TAXATION OF THE COMPANY

General. The Company plans to make an election to be taxed as a REIT under Sections 856 through 860 of the Code commencing with its taxable year ending December 31, 1997. The Company believes that, commencing with its taxable year ending December 31, 1997, it will be organized and will operate in such a manner as to qualify for taxation as a REIT under the Code commencing with such taxable year, and the Company intends to continue to operate in such a manner, but no assurance can be given that it will operate or continue to operate in such a manner so as to qualify or remain qualified.

These sections of the Code and the corresponding Treasury Regulations are highly technical and complex. The following sets forth the material aspects of the sections that govern the federal income tax treatment of a REIT and its stockholders. This summary is qualified in its entirety by the applicable Code provisions, rules and regulations promulgated thereunder, and administrative and judicial interpretations thereof.

Latham & Watkins has acted as tax counsel to the Company in connection with the Offering and the Company's election to be taxed as a REIT. In the opinion of Latham & Watkins, commencing with the Company's taxable year ending December 31, 1997, the Company will be organized in conformity with the requirements for qualification as a REIT, and its proposed method of operation will enable it to meet the requirements for qualification and taxation as a REIT under the Code. It must be emphasized that this opinion is based on various factual assumptions relating to the organization and operation of the Company, the Operating Partnership and the Services Company, and is conditioned upon certain representations made by the Company as

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to factual matters. In addition, this opinion is based upon the factual representations of the Company concerning its business and properties as set forth in this Prospectus and assumes that the actions described in this Prospectus are completed in a timely fashion. Moreover, such qualification and taxation as a REIT depends upon the Company's ability to meet (through actual annual operating results, distribution levels and diversity of stock ownership) the various qualification tests imposed under the Code discussed below, the results of which will not be reviewed by Latham & Watkins. Accordingly, no assurance can be given that the actual results of the Company's operation for any particular taxable year will satisfy such requirements. Further, the anticipated income tax treatment described in this Prospectus may be changed, perhaps retroactively, by legislative, administrative or judicial action at any time. See "--Failure to Qualify."

If the Company qualifies for taxation as a REIT, it generally will not be subject to federal corporate income taxes on its net income that is currently distributed to stockholders. This treatment substantially eliminates the "double taxation" (at the corporate and stockholder levels) that generally results from investment in a regular corporation. However, the Company will be subject to federal income tax as follows. First, the Company will be taxed at regular corporate rates on any undistributed "REIT taxable income," including undistributed net capital gains. Second, under certain circumstances, the Company may be subject to the "alternative minimum tax" on its items of tax preference. Third, if the Company has (i) net income from the sale or other disposition of "foreclosure property" (defined generally as property acquired by the Company through foreclosure or otherwise after a default on a loan secured by the property or a lease of the property) which is held primarily for sale to customers in the ordinary course of business or (ii) other nonqualifying income from foreclosure property, it will be subject to tax at the highest corporate rate on such income. Fourth, if the Company has net income from prohibited transactions (which are, in general, certain sales or other dispositions of property held primarily for sale to customers in the ordinary course of business other than foreclosure property), such income will be subject to a 100% tax. Fifth, if the Company should fail to satisfy the 75% gross income test or the 95% gross income test (as discussed below), but has nonetheless maintained its qualification as a REIT because certain other requirements have been met, it will be subject to a 100% tax on an amount equal to (a) the gross income attributable to the greater of the amount by which the Company fails the 75% or 95% test multiplied by (b) a fraction intended to reflect the Company's profitability. Sixth, if the Company should fail to distribute during each calendar year at least the sum of (i) 85% of its REIT ordinary income for such year, (ii) 95% of its REIT capital gain net income for such year, and (iii) any undistributed taxable income from prior periods, the Company would be subject to a 4% excise tax on the excess of such required distribution over the amounts actually distributed. Seventh, with respect to any asset (a "Built-In Gain Asset") acquired by the Company from a corporation which is or has been a C corporation (i.e., generally a corporation subject to full corporate-level tax) in a transaction in which the basis of the Built-In Gain Asset in the hands of the Company is determined by reference to the basis of the asset in the hands of the C corporation, if the Company recognizes gain on the disposition of such asset during the ten-year period (the "Recognition Period") beginning on the date on which such asset was acquired by the Company, then, to the extent of the Built-In Gain (i.e., the excess of (a) the fair market value of such asset over (b) the Company's adjusted basis in such asset, determined as of the beginning of the Recognition Period), such gain will be subject to tax at the highest regular corporate rate pursuant to Treasury Regulations that have not yet been promulgated. The results described above with respect to the recognition of Built-In Gain assume that the Company will make an election pursuant to IRS Notice 88-19.

Requirements for Qualification. The Code defines a REIT as a corporation, trust or association; (i) which is managed by one or more trustees or directors; (ii) the beneficial ownership of which is evidenced by transferable shares, or by transferable certificates of beneficial interest; (iii) which would be taxable as a domestic corporation, but for Sections 856 through 859 of the Code; (iv) which is neither a financial institution nor an insurance company subject to certain provisions of the Code; (v) the beneficial ownership of which is held by 100 or more persons; (vi) during the last half of each taxable year not more than 50% in value of the outstanding stock of which is owned, actually or constructively, by five or fewer individuals (as defined in the Code to include certain entities); and (vii) which meets certain other tests, described below, regarding the nature of its income and assets. The Code provides that conditions (i) to (iv), inclusive, must be met during the entire taxable year and that condition (v) must be met during at least 335 days of a taxable year of twelve months, or during a

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proportionate part of a taxable year of less than twelve months. Conditions (v) and (vi) will not apply until after the first taxable year for which an election is made to be taxed as a REIT. For purposes of conditions (v) and
(vi), pension funds and certain other tax-exempt entities are treated as individuals, subject to a "look-through" exception in the case of condition (vi).

The Company believes that upon consummation of the Offering it will have issued sufficient shares of Common Stock with sufficient diversity of ownership pursuant to the Offering to allow it to satisfy conditions (v) and (vi). In addition, the Company's Articles of Incorporation provides for restrictions regarding the transfer and ownership of shares, which restrictions are intended to assist the Company in continuing to satisfy the share ownership requirements described in (v) and (vi) above. Such ownership and transfer restrictions are described in "Description of Capital Stock--Restrictions on Ownership and Transfer." These restrictions, however, may not ensure that the Company will, in all cases, be able to satisfy the share ownership requirements described above. If the Company fails to satisfy such share ownership requirements, the Company's status as a REIT will terminate. See "--Failure to Qualify." In addition, a corporation may not elect to become a REIT unless its taxable year is the calendar year. The Company will have a calendar taxable year.

Ownership of a Partnership Interest. In the case of a REIT which is a partner in a partnership, Treasury Regulations provide that the REIT will be deemed to own its proportionate share of the assets of the partnership and will be deemed to be entitled to the income of the partnership attributable to such share. In addition, the character of the assets and gross income of the partnership shall retain the same character in the hands of the REIT for purposes of Section 856 of the Code, including satisfying the gross income tests and the asset tests. Thus, the Company's proportionate share of the assets and items of income of the Operating Partnership (including the Operating Partnership's share of such items of any subsidiary partnerships) will be treated as assets and items of income of the Company for purposes of applying the requirements described herein. A summary of the rules governing the federal income taxation of partnerships and their partners is provided below in "--Tax Aspects of the Operating Partnership." The Company has direct control of the Operating Partnership and intends to operate it consistent with the requirements for qualification as a REIT.

Income Tests. In order to maintain its qualification as a REIT, the Company annually must satisfy three gross income requirements. First, at least 75% of the Company's gross income (excluding gross income from prohibited transactions) for each taxable year must be derived directly or indirectly from investments relating to real property or mortgages on real property (including "rents from real property" and, in certain circumstances, interest) or from certain types of temporary investments. Second, at least 95% of the Company's gross income (excluding gross income from prohibited transactions) for each taxable year must be derived from such real property investments, dividends, interest and gain from the sale or disposition of stock or securities (or from any combination of the foregoing). Third, subject to certain exceptions in the year in which the Company is liquidated, short-term gain from the sale or other disposition of stock or securities, gain from prohibited transactions and gain on the sale or other disposition of real property held for less than four years (apart from involuntary conversions and sales of foreclosure property) must represent less than 30% of the Company's gross income (including gross income from prohibited transactions) for each taxable year. For purposes of applying the 30% gross income test, the holding period of Properties acquired by the Operating Partnership in the Formation Transactions will be deemed to have commenced on the date of acquisition.

Rents received by the Company will qualify as "rents from real property" in satisfying the gross income requirements for a REIT described above only if several conditions are met. First, the amount of rent must not be based in whole or in part on the income or profits of any person. However, an amount received or accrued generally will not be excluded from the term "rents from real property" solely by reason of being based on a fixed percentage or percentages of receipts or sales. Second, the Code provides that rents received from a tenant will not qualify as "rents from real property" in satisfying the gross income tests if the REIT, or an actual or constructive owner of 10% or more of the REIT, actually or constructively owns 10% or more of such tenant (a "Related Party Tenant"). Third, if rent attributable to personal property, leased in connection with a lease of real property, is greater than 15% of the total rent received under the lease, then the portion of rent attributable to such personal property will not qualify as "rents from real property." Finally, for rents received to qualify as

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"rents from real property," the REIT generally must not operate or manage the property or furnish or render services to the tenants of such property, other than through an independent contractor from whom the REIT derives no revenue. The REIT may, however, directly perform certain services that are "usually or customarily rendered" in connection with the rental of space for occupancy only and are not otherwise considered "rendered to the occupant" of the property. The Company does not and will not; (i) charge rent for any property that is based in whole or in part on the income or profits of any person (except by reason of being based on a percentage of receipts or sales, as described above); (ii) rent any property to a Related Party Tenant (unless the Company determines in its discretion that the rent received from such Related Party Tenant is not material and will not jeopardize the Company's status as a REIT);
(iii) derive rental income attributable to personal property (other than personal property leased in connection with the lease of real property, the amount of which is less than 15% of the total rent received under the lease); or (iv) perform services considered to be rendered to the occupant of the property, other than through an independent contractor from whom the Company derives no revenue.

The Services Company will receive fees in exchange for the performance of certain development activities. Such fees will not accrue to the Company, but the Company will derive its allocable share of dividends from the Services Company through its interest in the Operating Partnership, which qualify under the 95% gross income test, but not the 75% gross income test. The Company believes that the aggregate amount of any nonqualifying income in any taxable year will not exceed the limit on nonqualifying income under the gross income tests.

The Operating Partnership will receive fees in exchange for the performance of certain management activities for third parties with respect to properties in which the Operating Partnership does not own an interest, including certain of the Excluded Properties. Such fees will result in nonqualifying income to the Company under the 95% and 75% gross income tests. The Company believes that the aggregate amount of nonqualifying income, including such fees, in any taxable year will not exceed the limit on nonqualifying income under the gross income tests.

The term "interest" generally does not include any amount received or accrued (directly or indirectly) if the determination of such amount depends in whole or in part on the income or profits of any person. However, an amount received or accrued generally will not be excluded from the term "interest" solely by reason of being based on a fixed percentage or percentages of receipts or sales.

If the Company fails to satisfy one or both of the 75% or 95% gross income tests for any taxable year, it may nevertheless qualify as a REIT for such year if it is entitled to relief under certain provisions of the Code. These relief provisions will be generally available if the Company's failure to meet such tests was due to reasonable cause and not due to willful neglect, the Company attaches a schedule of the sources of its income to its federal income tax return, and any incorrect information on the schedule was not due to fraud with intent to evade tax. It is not possible, however, to state whether in all circumstances the Company would be entitled to the benefit of these relief provisions. For example, if the Company fails to satisfy the gross income tests because nonqualifying income that the Company intentionally incurs exceeds the limits on such income, the IRS could conclude that the Company's failure to satisfy the tests was not due to reasonable cause. If these relief provisions are inapplicable to a particular set of circumstances involving the Company, the Company would not qualify as a REIT. As discussed above in "Federal Income Tax Considerations--Taxation of the Company--General," even if these relief provisions apply, a 100% tax would be imposed on an amount equal to (a) the gross income attributable to the greater of the amount by which the Company failed the 75% or 95% test multiplied by (b) a fraction intended to reflect the Company's profitability. No similar mitigation provision provides relief if the Company fails the 30% gross income test. In such case, the Company would cease to qualify as a REIT.

Any gain realized by the Company on the sale of any property held as inventory or other property held primarily for sale to customers in the ordinary course of business (including the Company's share of any such gain realized by the Operating Partnership) will be treated as income from a prohibited transaction that is subject to a 100% penalty tax. Such prohibited transaction income may also have an adverse effect upon the Company's ability to satisfy the income tests for qualification as a REIT. Under existing law, whether property is held as inventory or primarily for sale to customers in the ordinary course of a trade or business is a question of fact that

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depends on all the facts and circumstances with respect to the particular transaction. The Operating Partnership intends to hold the Properties for investment with a view to long-term appreciation, to engage in the business of acquiring, developing, owning, and operating the Properties (and other properties) and to make such occasional sales of the Properties as are consistent with the Operating Partnership's investment objectives. There can be no assurance, however, that the IRS might not contend that one or more of such sales is subject to the 100% penalty tax.

Asset Tests. The Company, at the close of each quarter of its taxable year, must also satisfy three tests relating to the nature of its assets. First, at least 75% of the value of the Company's total assets (including its allocable share of the assets held by the Operating Partnership) must be represented by real estate assets including (i) its allocable share of real estate assets held by partnerships in which the Company owns a direct or indirect interest (such as the Operating Partnership) and (ii) stock or debt instruments held for not more than one year purchased with the proceeds of a stock offering or long-term (at least five years) public debt offering of the Company, cash, cash items and government securities. Second, not more than 25% of the Company's total assets
(including its allocable share of the assets held by the Operating Partnership)
may be represented by securities other than those in the 75% asset class. Third, of the investments included in the 25% asset class, the value of any one issuer's securities owned by the Company may not exceed 5% of the value of the Company's total assets and the Company may not own more than 10% of any one issuer's outstanding voting securities.

As described above, the Operating Partnership owns 100% of the non-voting preferred stock of the Services Company, and by virtue of its ownership of interests in the Operating Partnership, the Company will be considered to own its pro rata share of such stock. See "Structure and Formation of the Company." The Operating Partnership does not and will not own any of the voting securities of the Services Company, and therefore the Company will not be considered to own more than 10% of the voting securities of the Services Company. In addition, the Company believes (and has represented to tax counsel to the Company for purposes of its opinion, as described above) that the value of its pro rata share of the securities of the Services Company to be held by the Operating Partnership will not exceed, at the closing of the Offering, 5% of the total value of the Company's assets, and will not exceed such amount in the future. Latham & Watkins, in rendering its opinion as to the qualification of the Company as a REIT, is relying on the representation of the Company to such effect. No independent appraisals have been obtained to support this conclusion. There can be no assurance that the IRS will not contend that the value of the securities of the Services Company held by the Company (through the Operating Partnership) exceeds the 5% value limitation.

The 5% value test must be satisfied not only on the date that the Company (directly or through the Operating Partnership) acquires securities in the Services Company, but also each time the Company increases its ownership of securities of the Services Company (including as a result of increasing its interest in the Operating Partnership as a result of Company capital contributions to the Operating Partnership or as limited partners exercise their redemption/exchange rights). Although the Company plans to take steps to ensure that it satisfies the 5% value test for any quarter with respect to which retesting is to occur, there can be no assurance that such steps will always be successful, or will not require a reduction in the Operating Partnership's overall interest in the Services Company.

After initially meeting the asset tests at the close of any quarter, the Company will not lose its status as a REIT for failure to satisfy the asset tests at the end of a later quarter solely by reason of changes in asset values. If the failure to satisfy the asset tests results from an acquisition of securities or other property during a quarter (including as a result of the Company increasing its interest in the Operating Partnership), the failure can be cured by the disposition of sufficient nonqualifying assets within 30 days after the close of that quarter. The Company intends to maintain adequate records of the value of its assets to ensure compliance with the asset tests and to take such other actions within 30 days after the close of any quarter as may be required to cure any noncompliance. If the Company fails to cure noncompliance with the asset tests within such time period, the Company would cease to qualify as a REIT.

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Annual Distribution Requirements. The Company, in order to qualify as a REIT, is required to distribute dividends (other than capital gain dividends) to its stockholders in an amount at least equal to (i) the sum of (a) 95% of the Company's "REIT taxable income" (computed without regard to the dividends paid deduction and by excluding the Company's net capital gain) and (b) 95% of the excess of the net income, if any, from foreclosure property over the tax imposed on such income, minus (ii) the excess of the sum of certain items of noncash income (i.e., income attributable to leveled stepped rents, original issue discount or purchase money debt, or a like-kind exchange that is later determined to be taxable) over 5% of "REIT Taxable Income" as described in clause (i)(a) above. In addition, if the Company disposes of any Built-In Gain Asset during its Recognition Period, the Company will be required, pursuant to Treasury Regulations which have not yet been promulgated, to distribute at least 95% of the Built-in Gain (after tax), if any, recognized on the disposition of such asset. Such distributions must be paid in the taxable year to which they relate, or in the following taxable year if declared before the Company timely files its tax return for such year and if paid on or before the first regular dividend payment after such declaration. Such distributions are taxable to holders of Common Stock (other than tax-exempt entities, as discussed below) in the year in which paid, even though such distributions relate to the prior year for purposes of the Company's 95% distribution requirement. The amount distributed must not be preferential--i.e., each holder of shares of Common Stock must receive the same distribution per share. A REIT may have more than one class of capital stock, as long as distributions within each class are pro rata and non-preferential. To the extent that the Company does not distribute all of its net capital gain or distributes at least 95%, but less than 100%, of its "REIT taxable income," as adjusted, it will be subject to tax thereon at regular ordinary and capital gain corporate tax rates. The Company intends to make timely distributions sufficient to satisfy these annual distribution requirements. In this regard, the Partnership Agreement authorizes the Company, as general partner, to take such steps as may be necessary to cause the Operating Partnership to distribute to its partners an amount sufficient to permit the Company to meet these distribution requirements.

It is expected that the Company's REIT taxable income will be less than its cash flow due to the allowance of depreciation and other non-cash charges in computing REIT taxable income. Accordingly, the Company anticipates that it will generally have sufficient cash or liquid assets to enable it to satisfy the distribution requirements described above. It is possible, however, that the Company, from time to time, may not have sufficient cash or other liquid assets to meet these distribution requirements due to timing differences between (i) the actual receipt of income and actual payment of deductible expenses and (ii) the inclusion of such income and deduction of such expenses in arriving at taxable income of the Company. In the event that such timing differences occur, in order to meet the distribution requirements, the Company may find it necessary to arrange for short-term, or possibly long-term, borrowings, to pay dividends in the form of taxable stock dividends.

If the Company fails to meet the 95% distribution test due to certain adjustments (e.g., an increase in the Company's income or a decrease in its deduction for dividends paid) by reason of a judicial decision or by agreement with the IRS, the Company may pay a "deficiency dividend" to holders of shares of Common Stock in the taxable year of the adjustment, which dividend would relate back to the year being adjusted. In such case, the Company would also be required to pay interest to the IRS and would be subject to any applicable penalty provisions.

Furthermore, if the Company should fail to distribute during each calendar year at least the sum of (i) 85% of its REIT ordinary income for such year,
(ii) 95% of its REIT capital gain income for such year, and (iii) any undistributed taxable income from prior periods, the Company would be subject to a 4% excise tax on the excess of such required distribution over the amounts actually distributed.

FAILURE TO QUALIFY

If the Company fails to qualify for taxation as a REIT in any taxable year, and the relief provisions do not apply, the Company will be subject to tax (including any applicable alternative minimum tax) on its taxable income at regular corporate rates. Distributions to stockholders in any year in which the Company fails to qualify will not be deductible by the Company nor will they be required to be made. As a result, the Company's failure

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to qualify as a REIT would reduce the cash available for distribution by the Company to its stockholders. In addition, if the Company fails to qualify as a REIT, all distributions to stockholders will be taxable as ordinary income, to the extent of the Company's current and accumulated earnings and profits, and, subject to certain limitations of the Code, corporate distributees may be eligible for the dividends received deduction. Unless entitled to relief under specific statutory provisions, the Company will also be disqualified from taxation as a REIT for the four taxable years following the year during which qualification was lost. It is not possible to state whether in all circumstances the Company would be entitled to such statutory relief.

TAXATION OF TAXABLE U.S. STOCKHOLDERS GENERALLY

As used herein, the term "U.S. Stockholder" means a holder of shares of Common Stock who (for United States federal income tax purposes) (i) is a citizen or resident of the United States, (ii) is a corporation, partnership, or other entity created or organized in or under the laws of the United States or of any political subdivision thereof, or (iii) is an estate or trust the income of which is subject to United States federal income taxation regardless of its source.

As long as the Company qualifies as a REIT, distributions made by the Company out of its current or accumulated earnings and profits (and not designated as capital gain dividends) will constitute dividends taxable to its taxable U.S. Stockholders as ordinary income. Such distributions will not be eligible for the dividends received deduction otherwise available with respect to dividends received by U.S. Stockholders that are corporations. Distributions made by the Company that are properly designated by the Company as capital gain dividends will be taxable to taxable U.S. Stockholders as long-term capital gains (to the extent that they do not exceed the Company's actual net capital gain for the taxable year) without regard to the period for which a U.S. Stockholder has held his shares of Common Stock. U.S. Stockholders that are corporations may, however, be required to treat up to 20% of certain capital gain dividends as ordinary income. To the extent that the Company makes distributions (not designated as capital gain dividends) in excess of its current and accumulated earnings and profits, such distributions will be treated first as a tax-free return of capital to each U.S. Stockholder, reducing the adjusted basis which such U.S. Stockholder has in his shares of Common Stock for tax purposes by the amount of such distribution (but not below zero), with distributions in excess of a U.S. Stockholder's adjusted basis in his shares taxable as long-term capital gains (or short-term capital gain if the shares have been held for one year or less), provided that the shares have been held as a capital asset. Dividends declared by the Company in October, November, or December of any year and payable to a stockholder of record on a specified date in any such month shall be treated as both paid by the Company and received by the stockholder on December 31 of such year, provided that the dividend is actually paid by the Company on or before January 31 of the following calendar year. Stockholders may not include in their own income tax returns any net operating losses or capital losses of the Company.

Distributions made by the Company and gain arising from the sale or exchange by a U.S. Stockholder of shares of Common Stock will not be treated as passive activity income, and, as a result, U.S. Stockholders generally will not be able to apply any "passive losses" against such income or gain. Distributions made by the Company (to the extent they do not constitute a return of capital) generally will be treated as investment income for purposes of computing the investment income limitation. Gain arising from the sale or other disposition of Common Stock, however, will not be treated as investment income unless the U.S. Stockholder elects to reduce the amount of such U.S. Stockholder's total net capital gain eligible for the 28% maximum capital gains rate by the amount of such gain with respect to such Common Stock.

Upon any sale or other disposition of Common Stock, a U.S. Stockholder will recognize gain or loss for federal income tax purposes in an amount equal to the difference between (i) the amount of cash and the fair market value of any property received on such sale or other disposition and (ii) the holder's adjusted basis in such shares of Common Stock for tax purposes. Such gain or loss will be capital gain or loss if the shares have been held by the U.S. Stockholder as a capital asset, and will be long-term gain or loss if such shares have been held for more than one year. In general, any loss recognized by a U.S. Stockholder upon the sale or other disposition of shares of Common Stock that have been held for six months or less (after applying certain holding

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period rules) will be treated as a long-term capital loss, to the extent of capital gain dividends received by such U.S. Stockholder from the Company which were required to be treated as long-term capital gains.

BACKUP WITHHOLDING

The Company will report to its U.S. Stockholders and the IRS the amount of dividends paid during each calendar year, and the amount of tax withheld, if any. Under the backup withholding rules, a stockholder may be subject to backup withholding at the rate of 31% with respect to dividends paid unless such holder (a) is a corporation or comes within certain other exempt categories and, when required, demonstrates this fact, or (b) provides a taxpayer identification number, certifies as to no loss of exemption from backup withholding, and otherwise complies with applicable requirements of the backup withholding rules. A U.S. Stockholder that does not provide the Company with his correct taxpayer identification number may also be subject to penalties imposed by the IRS. Any amount paid as backup withholding will be creditable against the stockholder's income tax liability. In addition, the Company may be required to withhold a portion of capital gain distributions to any stockholders who fail to certify their non-foreign status to the Company. See "--Taxation of Non-U.S. Stockholders."

TAXATION OF TAX-EXEMPT STOCKHOLDERS

The IRS has ruled that amounts distributed as dividends by a qualified REIT do not constitute unrelated business taxable income ("UBTI") when received by a tax-exempt entity. Based on that ruling, provided that a tax-exempt shareholder (except certain tax-exempt shareholders described below) has not held its shares of Common Stock as "debt financed property" within the meaning of the Code and such shares are not otherwise used in a trade or business, the dividend income from the Company will not be UBTI to a tax-exempt shareholder. Similarly, income from the sale of Common Stock will not constitute UBTI unless such tax-exempt shareholder has held such shares as "debt financed property" within the meaning of the Code or has used the shares in a trade or business.

For tax-exempt shareholders which are social clubs, voluntary employee benefit associations, supplemental unemployment benefit trusts, and qualified group legal services plans exempt from federal income taxation under Code Sections 501(c)(7), (c)(9), (c)(17) and (c)(20), respectively, income from an investment in the Company will constitute UBTI unless the organization is able to properly deduct amounts set aside or placed in reserve for certain purposes so as to offset the income generated by its investment in the Company. Such prospective investors should consult their own tax advisors concerning these "set aside" and reserve requirements.

Notwithstanding the above, however, a portion of the dividends paid by a "pension held REIT" shall be treated as UBTI as to any trust which (i) is described in Section 401(a) of the Code, (ii) is tax-exempt under Section 501(a) of the Code, and (iii) holds more than 10% (by value) of the interests in the REIT. Tax-exempt pension funds that are described in Section 401(a) of the Code are referred to below as "qualified trusts."

A REIT is a "pension held REIT" if (i) it would not have qualified as a REIT but for the fact that Section 856(h)(3) of the Code provides that stock owned by qualified trusts shall be treated, for purposes of the "not closely held" requirement, as owned by the beneficiaries of the trust (rather than by the trust itself), and (ii) either (a) at least one such qualified trust holds more than 25% (by value) of the interests in the REIT, or (b) one or more such qualified trusts, each of which owns more than 10% (by value) of the interests in the REIT, hold in the aggregate more than 50% (by value) of the interests in the REIT. The percentage of any REIT dividend treated as UBTI is equal to the ratio of (i) the UBTI earned by the REIT (treating the REIT as if it were a qualified trust and therefore subject to tax on UBTI) to (ii) the total gross income of the REIT. A de minimis exception applies where the percentage is less than 5% for any year. The provisions requiring qualified trusts to treat a portion of REIT distributions as UBTI will not apply if the REIT is able to satisfy the "not closely held" requirement without relying upon the "look- through" exception with respect to qualified trusts. As a result of certain limitations on transfer and ownership of Common Stock contained in the Articles of Incorporation, the Company does not expect to be classified as a "pension held REIT."

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TAXATION OF NON-U.S. STOCKHOLDERS

The rules governing United States federal income taxation of the ownership and disposition of stock by persons that are, for purposes of such taxation, nonresident alien individuals, foreign corporations, foreign partnerships or foreign estates or trusts (collectively, "Non-U.S. Stockholders") are complex, and no attempt is made herein to provide more than a brief summary of such rules. Accordingly, the discussion does not address all aspects of United States federal income tax and does not address state, local or foreign tax consequences that may be relevant to a Non-U.S. Stockholder in light of its particular circumstances, including, for example, if the investment in the Company is connected to the conduct by a Non-U.S. Stockholder of a U.S. trade or business. In addition, this discussion is based on current law, which is subject to change, and assumes that the Company qualifies for taxation as a REIT. Prospective Non-U.S. Stockholders should consult with their own tax advisers to determine the impact of federal, state, local and foreign income tax laws with regard to an investment in Common Stock, including any reporting requirements.

Distributions. Distributions by the Company to a Non-U.S. Stockholder that are neither attributable to gain from sales or exchanges by the Company of United States real property interests nor designated by the Company as capital gains dividends will be treated as dividends of ordinary income to the extent that they are made out of current or accumulated earnings and profits of the Company. Such distributions ordinarily will be subject to withholding of United States federal income tax on a gross basis (that is, without allowance of deductions) at a 30% rate or such lower rate as may be specified by an applicable income tax treaty, unless the dividends are treated as effectively connected with the conduct by the Non-U.S. Stockholder of a United States trade or business. Dividends that are effectively connected with such a trade or business will be subject to tax on a net basis (that is, after allowance of deductions) at graduated rates, in the same manner as domestic stockholders are taxed with respect to such dividends and are generally not subject to withholding. Any such dividends received by a Non-U.S. Stockholder that is a corporation may also be subject to an additional branch profits tax at a 30% rate or such lower rate as may be specified by an applicable income tax treaty.

Pursuant to current Treasury Regulations, dividends paid to an address in a country outside the United States are generally presumed to be paid to a resident of such country for purposes of determining the applicability of withholding discussed above and the applicability of a tax treaty rate. Under proposed Treasury Regulations, not currently in effect, however, a Non-U.S. Stockholder who wished to claim the benefit of an applicable treaty rate would be required to satisfy certain certification and other requirements. Under certain treaties, lower withholding rates generally applicable to dividends do not apply to dividends from a REIT, such as the Company. Certain certification and disclosure requirements must be satisfied to be exempt from withholding under the effectively connected income exemption discussed above.

Distributions in excess of current or accumulated earnings and profits of the Company will not be taxable to a Non-U.S. Stockholder to the extent that they do not exceed the adjusted basis of the stockholders's Common Stock, but rather will reduce the adjusted basis of such stock. For FIRPTA withholding purposes (discussed below), such distributions (i.e., distributions that are not made out of earnings and profits) will be treated as consideration for the sale or exchange of shares of Common Stock. To the extent that such distributions exceed the adjusted basis of a Non-U.S. Stockholder's Common Stock, they will give rise to gain from the sale or exchange of his stock, the tax treatment of which is described below. If it cannot be determined at the time a distribution is made whether or not such distribution will be in excess of current or accumulated earnings and profits, the distribution will generally be treated as a dividend for withholding purposes. However, amounts thus withheld are generally refundable if it is subsequently determined that such distribution was, in fact, in excess of current or accumulated earnings and profits of the Company.

Distributions to a Non-U.S. Stockholder that are designated by the Company at the time of distribution as capital gains dividends (other than those arising from the disposition of a United States real property interest) generally will not be subject to United States federal income taxation, unless (i) investment in the Common Stock is effectively connected with the Non-U.S. Stockholder's United States trade or business, in which case the Non-U.S. Stockholder will be subject to the same treatment as domestic stockholders with respect to such gain (except

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that a stockholder that is a foreign corporation may also be subject to the 30% branch profits tax, as discussed above), or (ii) the Non-U.S. Stockholder is a nonresident alien individual who is present in the United States for 183 days or more during the taxable year and has a "tax home" in the United States, in which case the nonresident alien individual will be subject to a 30% tax on the individual's capital gains.

Distributions to a Non-U.S. Stockholder that are attributable to gain from sales or exchanges by the Company of United States real property interests will cause the Non-U.S. Stockholder to be treated as recognizing such gain as income effectively connected with a United States trade or business. Non-U.S. Stockholders would thus generally be entitled to offset its gross income by allowable deductions and would pay tax on the resulting taxable income at the same rates applicable to domestic stockholders (subject to a special alternative minimum tax in the case of nonresident alien individuals). Also, such gain may be subject to a 30% branch profits tax in the hands of a Non-U.S. Stockholder that is a corporation and is not entitled to treaty relief or exemption, as discussed above. The Company is required to withhold 35% of any such distribution. That amount is creditable against the Non-U.S. Stockholder's United States federal income tax liability. To the extent that such withholding exceeds the actual tax owed by the Non-U.S. Stockholder, the Non-U.S. Stockholder may claim a refund from the IRS.

The Company or any nominee (e.g., a broker holding shares in street name) may rely on a certificate of non-foreign status on Form W-8 or Form W-9 to determine whether withholding is required on gains realized from the disposition of United States real property interests. A domestic person who holds shares of Common Stock on behalf of a Non-U.S. Stockholder will bear the burden of withholding, provided that the Company has properly designated the appropriate portion of a distribution as a capital gain dividend.

Sale of Common Stock. Gain recognized by a Non-U.S. Stockholder upon the sale or exchange of shares of Common Stock generally will not be subject to United States taxation unless such shares constitute a "United States real property interest" within the meaning of the Foreign Investment in Real Property Tax Act of 1980 ("FIRPTA"). The Common Stock will not constitute a "United States real property interest" so long as the Company is a "domestically controlled REIT." A "domestically controlled REIT" is a REIT in which at all times during a specified testing period less than 50% in value of its stock is held directly or indirectly by Non- U.S. Stockholders. The Company believes that at the closing of the Offering it will be a "domestically controlled REIT," and therefore that the sale of shares of Common Stock will not be subject to taxation under FIRPTA. However, because the shares of Common Stock will be publicly traded, no assurance can be given that the Company will continue to be a "domestically-controlled REIT." Notwithstanding the foregoing, gain from the sale or exchange of shares of Common Stock not otherwise subject to FIRPTA will be taxable to a Non-U.S. Stockholder if the Non-U.S. Stockholder is a nonresident alien individual who is present in the United States for 183 days or more during the taxable year and has a "tax home" in the United States. In such case, the nonresident alien individual will be subject to a 30% United States withholding tax on the amount of such individual's gain.

If the Company does not qualify as or ceases to be a "domestically-controlled REIT," gain arising from the sale or exchange by a Non-U.S. Stockholder of shares of Common Stock would be subject to United States taxation under FIRPTA as a sale of a "United States real property interest" unless the shares are "regularly traded" (as defined by applicable Treasury Regulations) on an established securities market (e.g., the New York Stock Exchange) and the selling Non-U.S. Stockholder held no more than 5% (after applying certain constructive ownership rules) of the shares of Common Stock during the shorter of (i) the period during which the taxpayer held such shares, or (ii) the 5- year period ending on the date of the disposition of such shares. If gain on the sale or exchange of shares of Common Stock were subject to taxation under FIRPTA, the Non-U.S. Stockholder would be subject to regular United States income tax with respect to such gain in the same manner as a U.S. Stockholder (subject to any applicable alternative minimum tax, a special alternative minimum tax in the case of nonresident alien individuals and the possible application of the 30% branch profits tax in the case of foreign corporations), and the purchaser of the stock would be required to withhold and remit to the IRS 10% of the purchase price.

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Backup Withholding Tax and Information Reporting. Backup withholding tax (which generally is a withholding tax imposed at the rate of 31% on certain payments to persons that fail to furnish certain information under the United States information reporting requirements) and information reporting will generally not apply to distributions paid to Non-U.S. Stockholders outside the United States that are treated as (i) dividends subject to the 30% (or lower treaty rate) withholding tax discussed above, (ii) capital gains dividends or
(iii) distributions attributable to gain from the sale or exchange by the Company of United States real property interests. As a general matter, backup withholding and information reporting will not apply to a payment of the proceeds of a sale of Common Stock by or through a foreign office of a foreign broker. Information reporting (but not backup withholding) will apply, however, to a payment of the proceeds of a sale of Common Stock by a foreign office of a broker that (a) is a United States person, (b) derives 50% or more of its gross income for certain periods from the conduct of a trade or business in the United States or (c) is a "controlled foreign corporation" (generally, a foreign corporation controlled by United States stockholders) for United States tax purposes, unless the broker has documentary evidence in its records that the holder is a Non-U.S. Stockholder and certain other conditions are met, or the stockholder otherwise establishes an exemption. Payment to or through a United States office of a broker of the proceeds of a sale of Common Stock is subject to both backup withholding and information reporting unless the stockholder certifies under penalty of perjury that the stockholder is a Non- U.S. Stockholder, or otherwise establishes an exemption. A Non-U.S. Stockholder may obtain a refund of any amounts withheld under the backup withholding rules by filing the appropriate claim for refund with the IRS.

New Proposed Regulations. The United States Treasury has recently issued proposed Treasury Regulations regarding the withholding and information reporting rules discussed above. In general, the proposed Treasury Regulations do not alter the substantive withholding and information reporting requirements but unify current certification procedures and forms and clarify and modify reliance standards. If finalized in their current form, the proposed Treasury Regulations would generally be effective for payments made after December 31, 1997, subject to certain transition rules.

TAX ASPECTS OF THE OPERATING PARTNERSHIP

General. Substantially all of the Company's investments will be held indirectly through the Operating Partnership. In general, partnerships are "pass-through" entities which are not subject to federal income tax. Rather, partners are allocated their proportionate shares of the items of income, gain, loss, deduction and credit of a partnership, and are potentially subject to tax thereon, without regard to whether the partners receive a distribution from the partnership. The Company will include in its income its proportionate share of the foregoing partnership items for purposes of the various REIT income tests and in the computation of its REIT taxable income. Moreover, for purposes of the REIT asset tests, the Company will include its proportionate share of assets held by the Operating Partnership. See "--Taxation of the Company."

Entity Classification. The Company's interest in the Operating Partnership involves special tax considerations, including the possibility of a challenge by the IRS of the status of the Operating Partnership as a partnership (as opposed to an association taxable as a corporation) for federal income tax purposes. If the Operating Partnership was treated as an association, it would be taxable as a corporation and therefore be subject to an entity-level tax on its income. In such a situation, the character of the Company's assets and items of gross income would change and preclude the Company from satisfying the asset tests and possibly the income tests (see "--Taxation of the Company-- Asset Tests" and "--Income Tests"), and in turn would prevent the Company from qualifying as a REIT. See "Federal Income Tax Consequences--Taxation of the Company--Failure to Qualify" above for a discussion of the effect of the Company's failure to meet such tests for a taxable year. In addition, a change in the Operating Partnership's status for tax purposes might be treated as a taxable event in which case the Company might incur a tax liability without any related cash distributions.

The IRS recently finalized and published certain Treasury Regulations (the "Final Regulations") which provide that a domestic business entity not otherwise classified as a corporation and which has at least two members (an "Eligible Entity") may elect to be taxed as a partnership for federal income tax purposes. The Final Regulations apply for tax periods beginning on or after January 1, 1997 (the "Effective Date"). Unless it

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elects otherwise, an Eligible Entity in existence prior to the Effective Date will have the same classification for federal income tax purposes that it claimed under the entity classification Treasury Regulations in effect prior to the Effective Date. In addition, an Eligible Entity which did not exist, or did not claim a classification, prior to the Effective Date, will be classified as a partnership for federal income tax purposes unless it elects otherwise. The Company has not requested, and does not intend to request, a ruling from the IRS that the Operating Partnership will be treated as a partnership for federal income tax purposes. However, in connection with the closing of the Formation Transactions, Latham & Watkins will deliver an opinion to the Company stating that based on the provisions of the Partnership Agreement, certain factual assumptions and representations described in the opinion and the Final Regulations, the Operating Partnership will be treated as a partnership for federal income tax purposes (and not as an association or a publicly traded partnership taxable as a corporation). Unlike a private letter ruling, an opinion of counsel is not binding on the IRS, and no assurance can be given that the IRS will not challenge the status of the Operating Partnership as a partnership for federal income tax purposes. If such challenge were sustained by a court, the Operating Partnership could be treated as a corporation for federal income tax purposes.

Partnership Allocations. Although a partnership agreement will generally determine the allocation of income and loss among partners, such allocations will be disregarded for tax purposes if they do not comply with the provisions of Section 704(b) of the Code and the Treasury Regulations promulgated thereunder. Generally, Section 704(b) and the Treasury Regulations promulgated thereunder require that partnership allocations respect the economic arrangement of the partners.

If an allocation is not recognized for federal income tax purposes, the item subject to the allocation will be reallocated in accordance with the partners' interests in the partnership, which will be determined by taking into account all of the facts and circumstances relating to the economic arrangement of the partners with respect to such item. The Operating Partnership's allocations of taxable income and loss are intended to comply with the requirements of Section 704(b) of the Code and the Treasury Regulations promulgated thereunder.

The Partnership Agreement provides that net income or net loss of the Operating Partnership will generally be allocated to the Company and the limited partners in accordance with their respective percentage interests in the Operating Partnership. Notwithstanding the foregoing, such agreement provides that certain interest deductions and income from the discharge of certain indebtedness of the Operating Partnership, attributable to loans transferred to the Operating Partnership by certain Continuing Investors, will be allocated disproportionately to such Continuing Investors. In addition, allocations of net income or net loss will be subject to compliance with the provisions of Sections 704(b) and 704(c) of the Code and the Treasury Regulations promulgated thereunder.

Tax Allocations with Respect to the Properties. Pursuant to Section 704(c) of the Code, income, gain, loss and deduction attributable to appreciated or depreciated property (such as the Properties) that is contributed to a partnership in exchange for an interest in the partnership, must be allocated in a manner such that the contributing partner is charged with, or benefits from, respectively, the unrealized gain or unrealized loss associated with the property at the time of the contribution. The amount of such unrealized gain or unrealized loss is generally equal to the difference between the fair market value of contributed property at the time of contribution and the adjusted tax basis of such property at such time (a "Book-Tax Difference"). Such allocations are solely for federal income tax purposes and do not affect the book capital accounts or other economic or legal arrangements among the partners. The Operating Partnership was formed by way of contributions of appreciated property (including the Properties). Consequently, the Partnership Agreement requires that such allocations be made in a manner consistent with Section 704(c) of the Code.

In general, the principals of KI and other Continuing Investors who are limited partners of the Operating Partnership will be allocated depreciation deductions for tax purposes which are lower than such deductions would be if determined on a pro rata basis. In addition, in the event of the disposition of any of the contributed assets which have a Book-Tax Difference, all income attributable to such Book-Tax Difference will generally be allocated to such limited partners, and the Company will generally be allocated only its share of capital gains

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attributable to appreciation, if any, occurring after the closing of the Formation Transactions. This will tend to eliminate the Book-Tax Difference over the life of the Operating Partnership. However, the special allocation rules of Section 704(c) do not always entirely eliminate the Book-Tax Difference on an annual basis or with respect to a specific taxable transaction such as a sale. Thus, the carryover basis of the contributed assets in the hands the Operating Partnership may cause the Company to be allocated lower depreciation and other deductions, and possibly an amount of taxable income in the event of a sale of such contributed assets in excess of the economic or book income allocated to it as a result of such sale. This may cause the Company to recognize taxable income in excess of cash proceeds, which might adversely affect the Company's ability to comply with the REIT distribution requirements. See "--Taxation of the Company--Annual Distribution Requirements."

Treasury Regulations under Section 704(c) of the Code provide partnerships with a choice of several methods of accounting for Book-Tax Differences, including retention of the "traditional method" or the election of certain methods which would permit any distortions caused by a Book-Tax Difference to be entirely rectified on an annual basis or with respect to a specific taxable transaction such as a sale. The Operating Partnership and the Company have not yet decided which will be used to account for Book-Tax Differences with respect to the Properties initially contributed to the Operating Partnership.

With respect to any property purchased by the Operating Partnership subsequent to the admission of the Company to the Operating Partnership, such property will initially have a tax basis equal to its fair market value, and
Section 704(c) of the Code will not apply.

Basis in Operating Partnership Interest. The Company's adjusted tax basis in its interest in the Operating Partnership generally (i) will be equal to the amount of cash and the basis of any other property contributed to the Operating Partnership by the Company, (ii) will be increased by (a) its allocable share of the Operating Partnership's income and (b) its allocable share of indebtedness of the Operating Partnership and (iii) will be reduced, but not below zero, by the Company's allocable share of (a) losses suffered by the Operating Partnership, (b) the amount of cash distributed to the Company and
(c) by constructive distributions resulting from a reduction in the Company's share of indebtedness of the Operating Partnership.

If the allocation of the Company's distributive share of the Operating Partnership's loss exceeds the adjusted tax basis of the Company's partnership interest in the Operating Partnership, the recognition of such excess loss will be deferred until such time and to the extent that the Company has adjusted tax basis in its interest in the Operating Partnership. To the extent that the Operating Partnership's distributions, or any decrease in the Company's share of the indebtedness of the Operating Partnership (such decreases being considered a constructive cash distribution to the partners), exceeds the Company's adjusted tax basis, such excess distributions (including such constructive distributions) will constitute taxable income to the Company. Such taxable income will normally be characterized as a capital gain, and if the Company's interest in the Operating Partnership has been held for longer than the long-term capital gain holding period (currently one year), such distributions and constructive distributions will constitute long-term capital gain.

SERVICES COMPANY

A portion of the cash to be used by the Operating Partnership to fund distributions to partners, and in turn to fund distributions by the Company to its stockholders, is expected to come from the Services Company, through dividends on nonvoting preferred stock to be held by the Operating Partnership. The Services Company will not qualify as a REIT and will pay federal, state and local income taxes on its taxable income at normal corporate rates. The federal, state and local income taxes that the Services Company is required to pay will reduce the cash available for distribution by the Company to its stockholders.

As described above, the value of the Company's indirect interest in the securities of the Services Company held by the Operating Partnership cannot exceed 5% of the value of the Company's total assets at the end of any calendar quarter in which the Company acquires such securities or increases its interest in such securities (including as a result of the Company increasing its interest in the Operating Partnership). See "--Taxation of

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the Company--Asset Tests." This limitation may restrict the ability of the Services Company to increase the size of its business unless the value of the assets of the Company or the Operating Partnership is increasing at a commensurate rate.

OTHER TAX CONSEQUENCES

The Company and its stockholders may be subject to state or local taxation in various state or local jurisdictions, including those in which it or they transact business or reside. The state and local tax treatment of the Company and its stockholders may not conform to the federal income tax consequences discussed above. Consequently, prospective stockholders should consult their own tax advisors regarding the effect of state and local tax laws on an investment in the Company.

ERISA CONSIDERATIONS

The following is a summary of material considerations arising under ERISA and the prohibited transaction provisions of Section 4975 of the Code that may be relevant to a prospective purchaser (including, with respect to the discussion contained in "--Status of the Company, the Operating Partnership and the Partnerships under ERISA," to a prospective purchaser that is not an employee benefit plan, another tax-qualified retirement plan or an individual retirement account ("IRA")). This discussion does not propose to deal with all aspects of ERISA or Section 4975 of the Code or, to the extent not preempted, state law that may be relevant to particular employee benefit plan shareholders (including plans subject to Title I of ERISA, other employee benefit plans and IRAs subject to the prohibited transaction provisions of Section 4975 of the Code, and governmental plans and church plans that are exempt from ERISA and
Section 4975 of the Code but that may be subject to state law requirements) in light of their particular circumstances.

A FIDUCIARY MAKING THE DECISION TO INVEST IN SHARES OF COMMON STOCK ON BEHALF OF A PROSPECTIVE PURCHASER WHICH IS AN ERISA PLAN, A TAX-QUALIFIED RETIREMENT PLAN, AN IRA OR OTHER EMPLOYEE BENEFIT PLAN IS ADVISED TO CONSULT ITS OWN LEGAL ADVISOR REGARDING THE SPECIFIC CONSIDERATIONS ARISING UNDER ERISA, SECTION 4975 OF THE CODE, AND (TO THE EXTENT NOT PRE-EMPTED) STATE LAW WITH RESPECT TO THE PURCHASE, OWNERSHIP OR SALE OF SHARES OF COMMON STOCK BY SUCH PLAN OR IRA. Plans should also consider the entire discussion under the heading "Federal Income Tax Considerations," as material contained therein is relevant to any decision by an employee benefit plan, tax-qualified retirement plan or IRA to purchase the Common Stock.

EMPLOYEE BENEFIT PLANS, TAX-QUALIFIED RETIREMENT PLANS AND IRAS

Each fiduciary of an employee benefit plan subject to Title I of ERISA (an "ERISA Plan") should carefully consider whether an investment in shares of Common Stock is consistent with its fiduciary responsibilities under ERISA. In particular, the fiduciary requirements of Part 4 of Title I of ERISA require
(i) an ERISA Plan's investments to be prudent and in the best interests of the ERISA Plan, its participants and beneficiaries, (ii) an ERISA Plan's investments to be diversified in order to reduce the risk of large losses, unless it is clearly prudent not to do so, (iii) an ERISA Plan's investments to be authorized under ERISA and the terms of the governing documents of the ERISA Plan and (iv) that the fiduciary not cause the ERISA Plan to enter into transactions prohibited under Section 406 of ERISA. In determining whether an investment in shares of Common Stock is prudent for purposes of ERISA, the appropriate fiduciary of an ERISA Plan should consider all of the facts and circumstances, including whether the investment is reasonably designed, as a part of the ERISA Plan's portfolio for which the fiduciary has investment responsibility, to meet the objectives of the ERISA Plan, taking into consideration the risk of loss and opportunity for gain (or other return) from the investment, the diversification, cash flow and funding requirements of the ERISA Plan, and the liquidity and current return of the ERISA Plan's

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portfolio. A fiduciary should also take into account the nature of the Company's business, the length of the Company's operating history and other matters described under "Risk Factors."

The fiduciary of an IRA or of an employee benefit plan not subject to Title I of ERISA because it is a governmental or church plan or because it does not cover common law employees (a "Non-ERISA Plan") should consider that such an IRA or Non-ERISA Plan may only make investments that are authorized by the appropriate governing documents, not prohibited under Section 4975 of the Code and permitted under applicable state law.

STATUS OF THE COMPANY, THE OPERATING PARTNERSHIP AND THE SERVICES COMPANY UNDER ERISA

A prohibited transaction may occur if the assets of the Company are deemed to be assets of the investing Plans and disqualified persons deal with such assets. In certain circumstances where a Plan holds an interest in an entity, the assets of the entity are deemed to be Plan assets (the "look-through rule"). Under such circumstances, any person that exercises authority or control with respect to the management or disposition of such assets is a Plan fiduciary. Plan assets are not defined in ERISA or the Code, but the United States Department of Labor has issued regulations, effective March 13, 1987 (the "Regulations"), that outline the circumstances under which a Plan's interest in an entity will be subject to the look-through rule.

The Regulations apply only to the purchase by a Plan of an "equity interest" in an entity, such as common stock of a REIT. However, the Regulations provide an exception to the look-through rule for equity interests that are "publicly- offered securities."

Under the Regulations, a "publicly-offered security" is a security that is
(i) freely transferable, (ii) part of a class of securities that is widely-held and (iii) either (a) part of a class of securities that is registered under section 12(b) or 12(g) of the Exchange Act or (b) sold to a Plan as part of an offering of securities to the public pursuant to an effective registration statement under the Securities Act and the class of securities of which such security is a part is registered under the Exchange Act within 120 days (or such longer period allowed by the Securities and Exchange Commission) after the end of the fiscal year of the issuer during which the offering of such securities to the public occurred. Whether a security is considered "freely transferable" depends on the facts and circumstances of each case. Generally, if the security is part of an offering in which the minimum investment is $10,000 or less, any restriction on or prohibition against any transfer or assignment of such security for the purposes of preventing a termination or reclassification of the entity for federal or state tax purposes will not of itself prevent the security from being considered freely transferable. A class of securities is considered "widely-held" if it is a class of securities that is owned by 100 or more investors independent of the issuer and of one another.

The Company anticipates that the Common Stock will meet the criteria of the publicly-offered securities exception to the look-through rule. First, the Company anticipates that the Common Stock will be considered to be freely transferable, as the minimum investment will be less than $10,000 and the only restrictions upon its transfer are those required under federal tax laws to maintain the Company's status as a REIT. Second, the Company believes that the Common Stock will be held by 100 or more investors and that at least 100 or more of these investors will be independent of the Company and of one another. Third, the Common Stock will be part of an offering of securities to the public pursuant to an effective registration statement under the Securities Act and will be registered under the Exchange Act within 120 days after the end of the fiscal year of the Company during which the offering of such securities to the public occurs. Accordingly, the Company believes that if a Plan purchases the Common Stock, the Company's assets should not be deemed to be Plan assets and, therefore, that any person who exercises authority or control with respect to the Company's assets should not be a Plan fiduciary.

159

UNDERWRITING

The Underwriters named below (the "Underwriters"), for whom Prudential Securities Incorporated ("Prudential Securities"), Donaldson, Lufkin & Jenrette Securities Corporation, J.P. Morgan Securities Inc. and Smith Barney Inc. are acting as representatives ("Representatives"), have severally agreed, subject to the terms and conditions contained in the Underwriting Agreement, to purchase from the Company the number of shares of Common Stock set forth below opposite their respective names:

                                                                   NUMBER OF
   UNDERWRITER                                                       SHARES
   -----------                                                     ----------
Prudential Securities Incorporated................................
Donaldson, Lufkin & Jenrette Securities Corporation...............
J.P. Morgan Securities Inc........................................
Smith Barney Inc..................................................
                                                                   ----------
    Total......................................................... 11,300,000
                                                                   ==========

The Company is obligated to sell, and the Underwriters are obligated to purchase, all of the shares of Common Stock offered hereby if any are purchased.

The Underwriters, through their Representatives, have advised the Company that they propose to offer the shares of Common Stock to the public initially at the public offering price set forth on the cover page of this Prospectus; that the Underwriters may allow to selected dealers a concession of $ per share, and that such dealers may re-allow a concession of $ per share to certain other dealers. After the initial public offering, the offering price and the concessions may be changed by the Representatives.

The Company has granted the Underwriters an option, exercisable for 30 days from the date of this Prospectus, to purchase up to 1,695,000 additional shares of Common Stock at the initial public offering price, less the underwriting discounts and commissions, as set forth on the cover page of this Prospectus. The Underwriters may exercise such option solely for the purpose of covering over-allotments incurred in the sale of shares of Common Stock offered hereby. To the extent such option to purchase is exercised, each Underwriter will become obligated, subject to certain conditions, to purchase approximately the same percentage of such additional shares of Common Stock as the number set forth next to such Underwriter's name in the preceding table bears to 11,300,000.

The Company has agreed to indemnify the several Underwriters against or to contribute to losses arising out of certain liabilities, including liabilities under the Securities Act. The Company has been advised that, in the opinion of the Commission, such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. Nevertheless, the Underwriters may seek to enforce such indemnification and rights to contribution which are expressly provided under the Act.

The Representatives of the Underwriters have informed the Company that the Underwriters do not intend to confirm sales to any accounts over which they exercise discretionary authority.

Each of the Continuing Investors has agreed not to, directly or indirectly, offer, sell, offer to sell, contract to sell, pledge, grant any option to purchase or otherwise sell or dispose (or announce any offer, sale, offer of sale, pledge, grant of any option to purchase or other sale or disposition) of any Units or shares of Common Stock or other capital stock of the Company, or any securities convertible or exercisable or exchangeable for any Units or shares of Common Stock or other capital stock for a period of two years from the date of this Prospectus, and the Company has agreed not to offer, sell, offer to sell, contract to sell, grant any option to purchase or otherwise sell or dispose (or announce any offer, sale, offer of sale, contract of sale, pledge, grant of any option to purchase or other sale or disposition) of any (other than pursuant to the Stock Incentive Plan) shares of Common Stock or other capital stock of the Company, or any securities convertible or exercisable or exchangeable for any Units or shares of Common Stock or other capital stock of the Company, for a period of 180 days from the date of this Prospectus, in each case without the prior written consent of Prudential

160

Securities, on behalf of the Underwriters, subject to certain limited exceptions. Notwithstanding the foregoing, 50% of the Units received by John B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy Industries in connection with the Formation Transactions will be pledged to secure their indemnification obligations pursuant to an agreement with the Company. See "Formation and Structure of the Company."

The shares of Common Stock have been approved for listing on the NYSE, subject to official notice of issuance. In order to meet one of the requirements for listing the shares of Common Stock on the NYSE, the Underwriters have undertaken to sell (i) lots of 100 or more shares to a minimum of 2,000 beneficial holders, (ii) a minimum of 1.1 million shares and
(iii) shares with a minimum aggregate market value of $40.0 million.

Prior to the Offering, there has been no public market for the Common Stock. The initial public offering price will be determined through negotiations between the Company and the Representatives. Among the factors to be considered in such determination were prevailing market conditions, dividend yields and financial characteristics of publicly traded REITs that the Company and the Representatives believe to be comparable to the Company, the present state of the Company's financial and business operations, the Company's management, estimates of the business and earnings potential of the Company and the prospects for the industry in which the Company operates.

An affiliate of J.P. Morgan & Co. is expected to provide the Mortgage Loans and the proposed Credit Facility. In such event, the Company will pay (i) a debt placement fee to an affiliate of J.P. Morgan & Co. for (a) the $84.0 Million Loan equal to 0.5% of the principal amount thereof and (b) the SeaTac Loan equal to 1.5% of the principal amount thereof, and (ii) an origination fee to an affiliate of J.P. Morgan & Co. for the proposed Credit Facility equal to 1.0% of the maximum amount available thereunder. It is expected that an affiliate of Prudential Securities will participate in the Credit Facility.

Upon consummation of the Offering, Prudential Securities will receive approximately $31.0 million of the net proceeds from the Offering as repayment of indebtedness, fees and related interest expected to be accrued and unpaid as of such date. See "Use of Proceeds."

The Prudential Insurance Company of America, an affiliate of Prudential Securities, is a tenant in one of the Office Properties located in Kilroy Long Beach, leasing approximately 2,189 square feet of space.

The Company will pay to the Representatives advisory fees equal, in the aggregate, to 0.75% of the gross proceeds received by the Company in the Offering, for investment banking services relating to, among other things, the structuring of the Formation Transactions and the Offering.

LEGAL MATTERS

Certain legal matters in connection with the Offering will be passed upon for the Company by Latham & Watkins, Los Angeles, California. Legal matters relating to Maryland law, including the validity of the issuance of the shares of Common Stock offered hereby, will be passed upon for the Company by Ballard Spahr Andrews & Ingersoll, Baltimore, Maryland. Certain legal matters will be passed upon for the Underwriters by Kaye, Scholer, Fierman, Hays & Handler, LLP, New York, New York. In addition, the description of federal income tax consequences contained in this Prospectus under "Federal Income Tax Consequences" is, to the extent that it constitutes matters of law, summaries of legal matters or legal conclusions, the opinion of Latham & Watkins, special tax counsel to the Company as to the material federal income tax consequences of the Offering.

EXPERTS

The financial statements of Kilroy Realty Corporation as of September 30, 1996, the Kilroy Group as of September 30, 1996, December 31, 1995 and 1994 and for each of the three years in the period ended December 31, 1995 and the nine months ended September 30, 1995 and 1996 and the Acquisition Properties for

161

the year ended December 31, 1995 and the nine months ended September 30, 1996 included in this Prospectus and the related financial statement schedule included elsewhere in the Registration Statement have been audited by Deloitte & Touche LLP, independent auditors, as stated in their reports appearing herein and elsewhere in the registration statement, and are included in reliance on the reports of such firm, given upon their authority as experts in auditing and accounting.

In addition, certain statistical information provided under the captions "Prospectus Summary--The Company's Southern California Submarkets" and "Business and Properties--The Company's Southern California Submarkets" has been prepared by Robert Charles Lesser & Co., and is included herein in reliance upon the authority of such firm as expert in, among other things, real estate consulting and urban economics.

ADDITIONAL INFORMATION

The Company has filed with the Securities and Exchange Commission (the "Commission"), 450 Fifth Street N.W., Washington, D.C. 20599, a Registration Statement (of which this Prospectus is a part) on Form S-11 under the Securities Act and the rules and regulations promulgated thereunder with respect to the securities offered hereby. This Prospectus does not contain all the information set forth in the Registration Statement and the exhibits and financial statements thereto, certain portions of which have been omitted as permitted by the rules and regulations of the Commission. Statements contained in this Prospectus as to the content of any contract or other document are not necessarily complete, and in each instance reference is made to the copy of such contract or other document filed as an exhibit to the Registration Statement, each such statement being qualified in all respects by such reference and the exhibits and schedules hereto. For further information regarding the Company and the Common Stock offered hereby, reference is hereby made to the Registration Statement and such exhibits and schedules, copies of which may be examined without charge at, or copies obtained upon payment of prescribed fees from, the Public Reference Section of the Commission at Room 1204, Judiciary Plaza, 450 Fifth Street, N.W., Washington, D.C. 20549, and at the following regional offices of the Commission: 7 World Trade Center, 13th Floor, New York, New York 10048 and Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661-2511, or by way of the Commission's Internet address, http://www.sec.gov.

Following the consummation of the Offering, the Company will be required to file reports and other information with the Commission pursuant to the Exchange Act. In addition to applicable legal or New York Stock Exchange requirements, if any, the Company intends to furnish its stockholders with annual reports containing consolidated audited financial statements with a report thereon by the Company's independent certified public accountants and with quarterly reports containing unaudited condensed consolidated financial statements for each of the first three quarters of each fiscal year.

162

GLOSSARY

"Acquisition Properties" means the two office buildings and related assets that comprise Kilroy Long Beach Phase I, the Thousand Oaks Office Property and the Office and Industrial Properties located at 4123-4175 East La Palma, Anaheim, California that are expected to be acquired by the Company concurrently with the completion of the Offering, including, with respect to Kilroy Long Beach Phase I, the ground lease with respect thereto, and the Industrial Property located at 15752-12822 Monarch Street, Garden Grove, California which was purchased by KI on behalf of the Company prior to consummation of the Offering and will be assigned to the Company upon consummation of the Offering.

"ADA" means the Americans with Disabilities Act, enacted on July 26, 1990.

"Audit Committee" means the audit committee of the Board of Directors.

"base rent" means gross rent excluding payments by tenants on account of real estate taxes, operating expenses and utility expenses.

"Class A office buildings" means office buildings that have excellent location and access, attract major corporate tenants, have high quality finishes, are well maintained, professionally managed and are either new buildings or buildings that are competitive with new buildings.

"Code" means the Internal Revenue Code of 1986, as amended.

"Commission" means the Securities and Exchange Commission.

"Common Stock" means common stock, par value $.01 per share, of the Company.

"Company" means Kilroy Realty Corporation and its consolidated subsidiaries and the Services Company.

"Continuing Investors" shall mean the persons and entities receiving Units in connection with the Formation Transactions. See "Note 1. Organization and Basis of Presentation" to the Combined Financial Statements of the Kilroy Group.

"Credit Facility" means the $100.0 million revolving credit facility that the Company expects to enter into shortly after consummation of the Offering.

"$84.0 Million Loan" means the $84.0 million mortgage loan secured by certain of the Properties.

"ERISA" means the Employee Retirement Income Security Act of 1974, as amended.

"Exchange Act" means the Securities Exchange Act of 1934, as amended.

"Executive Committee" means the executive committee of the Board of Directors.

"Formation Transactions" means those transactions relating to the organization of the Company and its subsidiaries, including the transfer of the Properties and other assets to the Company, as described under "Formation and Structure of the Company--Formation Transactions."

"Funds from Operations" means, in accordance with the resolution adopted by the Board of Governors of NAREIT in its March 1995 White Paper, net income
(loss) computed in accordance with GAAP, excluding gains (or losses) from debt restructuring and sales of property, plus real estate related depreciation and amortization (excluding amortization of deferred financing costs), and after adjustments for unconsolidated partnerships and joint ventures.

"Independent Director" means a director of the Company who is not an employee, officer or affiliate of the Company or a subsidiary or division thereof, or a relative of a principal executive officer, and who is not an

163

individual member of an organization acting as advisor, consultant or legal counsel, receiving compensation on a continuing basis from the Company in addition to director's fees.

"Industrial Properties" means the 12 industrial properties in which the Company will have an ownership interest upon completion of the Offering, including the Industrial Property located at 15752-12822 Monarch Street, Garden Grove, California which was purchased by KI on behalf of the Company prior to consummation of the Offering and will be assigned to the Company upon consummation of the Offering.

"IRAs" means individual retirement accounts.

"IRS" means the Internal Revenue Service.

"KI" means Kilroy Industries, a California corporation, that operated the Company's business prior to the consummation of the Offering and the Formation Transactions.

"Kilroy Group" means KI and the partnerships and trusts affiliated with KI that prior to the Offering owned the Properties (other than the Acquisition Properties) and other assets being transferred to the Company in the Formation Transactions. See "Note 1. Organization and Basis of Presentation" of the historical financial statements of the Kilroy Group.

"Kilroy Realty Corporation" means Kilroy Realty Corporation, a Maryland corporation with its principal office at 2250 East Imperial Highway, Suite 1200, El Segundo, California 90245.

"LAX" means Los Angeles International Airport.

"look-through rule" means the ERISA rule providing that in certain circumstances where a Plan holds an interest in an entity, the assets of the entity are deemed to be the Plan's assets.

"MGCL" means the Maryland General Corporation Law.

"Mortgage Loans" means the $96.0 million mortgage loans, the closing of which is a condition to the completion of the Offering, to be obtained by the Company concurrently with the consummation of the Offering.

"NAREIT" means the National Association of Real Estate Investment Trusts.

"net absorption" means, with respect to a specified market area, the net increase in occupied rentable space.

"NYSE" means the New York Stock Exchange, Inc.

"Offering" means the initial public offering of shares of Common Stock of Kilroy Realty Corporation pursuant to and as described in this Prospectus.

"Office Properties" means the 14 office properties in which the Company will have an ownership interest upon completion of the Offering, including consummation of the Formation Transactions and acquisition of the Acquisition Properties.

"Omnibus Agreement" means the agreement by and among each of the Continuing Investors and the Company pursuant to which the Continuing Investors will contribute their interests in the Properties (other than the Acquisition Properties), and certain other assets, in exchange for Units representing limited partnership interests in the Operating Partnership.

"Operating Partnership" means Kilroy Realty, L.P., a Delaware limited partnership with its office at 2250 East Imperial Highway, Suite 1200, El Segundo, California 90245, organized in the Formation Transactions and through which all of the Company's interests in the Properties will be held and real estate activities will be conducted.

164

"Ownership Limit" means the restriction contained in the Company's Articles of Incorporation providing that, subject to certain exceptions, no holder may own, or be deemed to own by virtue of the constructive ownership provisions of the Code, more than 7.0% (by number or value, whichever is more restrictive) of the outstanding shares of Common Stock.

"Partnership Agreement" means the Amended and Restated Agreement of Limited Partnership of the Operating Partnership, as amended from time to time.

"Partnerships" means those corporations, general and limited partnerships and trusts affiliated with Kilroy Industries whose Properties are being acquired by the Operating Partnership.

"Plans" means employee benefit plans and IRAs.

"Preferred Stock" means shares of preferred stock, par value $.01 per share, of the Company.

"Properties" means the real property and related assets owned by the Partnerships and contributed to the Company by the Continuing Investors in connection with the Formation Transactions, including, but not limited to, real property and the Acquisition Properties.

"Prospectus" means this prospectus relating to the sale of up to 11,300,000 shares of Common Stock of the Company in the Offering, plus the 1,695,500 shares subject to the Underwriters' over-allotment option.

"Regulations" means regulations issued by the United States Department of Labor defining "plan assets."

"REIT" means a real estate investment trust as defined in Section 856 of the Code which meets the requirements for qualification as a REIT described in Sections 856 through 860 of the Code.

"Related Party Tenant" means a tenant of a REIT in which the REIT, or an owner of 10% or more of the REIT, actually or constructively owns a 10% or greater ownership interest.

"rentable square feet" means a building's usable area plus common areas and penetrations, expressed collectively in square feet which are allocated pro rata to tenants.

"Representatives" means Prudential Securities Incorporated, Donaldson, Lufkin & Jenrette Securities Corporation, J.P. Morgan Securities Inc. and Smith Barney Inc., as representatives of the Underwriters.

"Rule 144" means Rule 144 promulgated under the Securities Act.

"SeaTac Loan" means the $12.0 million mortgage loan secured by the SeaTac Office Center.

"Securities Act" means the Securities Act of 1933, as amended.

"Services Company" means Kilroy Services, Inc., a Maryland corporation with its principal office at 2250 East Imperial Highway, El Segundo, CA 90245, which will perform the Company's development activities and third party development services, and the economic value of which will be owned 95.0% by the Operating Partnership and 5.0% collectively by John B. Kilroy, Sr. and John B. Kilroy, Jr.

"Southern California Area" means the counties of Los Angeles, Orange, Riverside, San Bernardino and Ventura.

"Stock Incentive Plan" means the Company's stock incentive plan, as further described in this Prospectus under the caption entitled "Management--Stock Incentive Plan."

"Thousand Oaks Office Property" means the office building and related realty located at 2829 Townsgate Road, Thousand Oaks, California.

165

"Treasury Regulations" means regulations of the U.S. Department of Treasury under the Code.

"triple net basis lease" means a lease pursuant to which a tenant is responsible for the base rent in addition to the costs and expenses in connection with and related to property taxes, insurance and repairs and maintenance applicable to the leased space.

"Underwriters" means each of the Underwriters named in the section of this Prospectus entitled "Underwriting."

"Underwriting Agreement" means the Underwriting Agreement between the Company and the Representatives relating to the purchase of the Common Stock offered hereby.

"Units" means limited and general partnership interests representing an ownership interest in the Operating Partnership.

166

INDEX TO FINANCIAL STATEMENTS

                                                                           PAGE
                                                                           ----
Kilroy Realty Corporation
 Pro Forma (Unaudited):
  Pro Forma Condensed Consolidated Balance Sheet as of September 30,
   1996...................................................................  F-2
  Notes to Pro Forma Condensed Consolidated Balance Sheet.................  F-3
  Pro Forma Condensed Consolidated Statements of Operations for the nine
   months ended September 30, 1996 and the year ended December 31, 1995...  F-5
  Notes to Pro Forma Condensed Consolidated Statements of Operations......  F-7
 Historical:
  Independent Auditors' Report............................................  F-8
  Balance Sheet as of September 30, 1996..................................  F-9
  Notes to Balance Sheet.................................................. F-10
Kilroy Group (Predecessor Affiliates)
  Independent Auditors' Report............................................ F-12
  Combined Balance Sheets as of September 30, 1996, and December 31, 1995
   and 1994............................................................... F-13
  Combined Statements of Operations for the nine months ended September
   30, 1996 and 1995 and the three years ended December 31, 1995, 1994 and
   1993................................................................... F-14
  Combined Statements of Accumulated Deficit for the three years ended
   December 31, 1995, 1994 and 1993 and nine months ended September 30,
   1996................................................................... F-15
  Combined Statements of Cash Flows for the nine months ended September
   30, 1996 and 1995 and the three years ended December 31, 1995, 1994 and
   1993................................................................... F-16
  Notes to Combined Financial Statements.................................. F-17
Acquisition Properties
  Independent Auditors' Report............................................ F-27
  Combined Historical Summaries of Certain Revenues and Certain Expenses
   for the nine months ended September 30, 1996 and for the year ended
   December 31, 1995...................................................... F-28
  Notes to Combined Historical Summaries of Certain Revenues and Certain
   Expenses............................................................... F-29

F-1

KILROY REALTY CORPORATION

PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET

SEPTEMBER 30, 1996
(UNAUDITED)

(DOLLARS IN THOUSANDS)

This unaudited pro forma condensed consolidated balance sheet is presented as if (i) the transfer of the Properties and business and operations of the Kilroy Group pursuant to the Formation Transactions and (ii) the Offering, the Mortgage Loans and use of proceeds to repay indebtedness and purchase the Acquisition Properties had each occurred on September 30, 1996. Such pro forma information is based upon the historical balance sheet of the Kilroy Group at September 30, 1996. The acquisition of the Properties (other than the Acquisition Properties) and business and operations of the Kilroy Group will be recorded by the Company at the historical cost reflected in the Kilroy Group financial statements. The historical cost basis, similar to a pooling of interests, will be used because these Properties have been under the common control of John B. Kilroy, Sr. and John B. Kilroy, Jr. The purchase of the Acquisition Properties will be accounted for as a purchase transaction. Future acquisitions, including the possible purchase of Excluded Properties, will be accounted as purchase transactions. This pro forma condensed balance sheet should be read in conjunction with the pro forma condensed statement of operations of the Company and the historical combined financial statements and notes thereto of the Kilroy Group and the historical combined summaries of certain revenues and certain expenses of the Acquisition Properties included elsewhere in this Prospectus. See "The Company" and "Use of Proceeds."

The unaudited pro forma condensed balance sheet is not necessarily indicative of what the actual financial position of the Company would have been assuming the Company had been formed and the consummation of the Formation Transactions, the Offering and the Mortgage Loans and the use of proceeds thereof, and the acquisition of the Acquisition Properties at September 30, 1996, nor does it purport to represent the future financial position of the Company.

                                                       SEPTEMBER 30, 1996
                                        -------------------------------------------------------
                                                                                  KILROY REALTY
                          KILROY REALTY   KILROY                                   CORPORATION
                           CORPORATION    GROUP     ACQUISITION     PRO FORMA       PRO FORMA
                           HISTORICAL   HISTORICAL  PROPERTIES     ADJUSTMENTS    CONSOLIDATED
                          ------------- ----------  -----------    -----------    -------------
                               (A)         (B)
         ASSETS
Rental properties, net
 of accumulated
 depreciation and
 amortization...........    $     --    $ 119,405    $ 58,022 (C)   $     --        $177,427
Cash and cash
 equivalents............            1                 (58,022)(C)      79,516 (D)     21,495
Tenant receivables,
 net....................                    3,363                                      3,363
Deferred charges and
 other assets, net of
 accumulated
 amortization...........                    8,294                          24 (E)      8,318
                            ---------   ---------    --------       ---------       --------
   Total................    $       1   $ 131,062         --        $  79,540       $210,603
                            =========   =========    ========       =========       ========
     LIABILITIES AND
      STOCKHOLDERS'
    EQUITY (DEFICIT)
Liabilities:
 Debt...................    $     --    $ 224,046                   $(128,046)(F)   $ 96,000
 Accounts payable and
  accrued expenses......                    2,600                                      2,600
 Accrued construction
  costs.................                      460                        (460)(G)
 Accrued property
  taxes.................                    1,007                                      1,007
 Accrued interest
  payable...............                    3,538                      (3,538)(H)
 Accrued cost of option
  buy-out and tenant
  improvements..........                    3,650                      (2,260)(I)      1,390
 Rent received in
  advance and tenant
  security deposits.....                    8,984                                      8,984
                            ---------   ---------    --------       ---------       --------
   Total liabilities....                  244,285                    (134,304)       109,981
                            ---------   ---------    --------       ---------       --------
Minority interest.......                                               19,319 (J)     19,319
                            ---------   ---------    --------       ---------       --------
Stockholders' equity
 (deficit):
 Common stock...........            1                                     113 (K)        114
 Additional paid-in
  capital...............                                              213,731 (K)     81,189
                                                                      (19,319)(J)
                                                                     (113,223)(L)
 Accumulated deficit....                 (113,223)                    113,223 (L)
                            ---------   ---------    --------       ---------       --------
   Total stockholders'
    equity (deficit)....            1    (113,223)                    194,525         81,303
                            ---------   ---------    --------       ---------       --------
   Total................    $       1   $ 131,062                   $  79,540       $210,603
                            =========   =========    ========       =========       ========

F-2

KILROY REALTY CORPORATION

NOTES TO PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)
(DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

PRO FORMA ADJUSTMENTS

These pro forma adjustments are to reflect the Offering, the Formation Transactions, including the transfer of the Properties (other than the Acquisition Properties), the purchase of the Acquisition Properties and the Mortgage Loans and the use of proceeds thereof.

(A) Reflects Kilroy Realty Corporation audited balance sheet as of September 30, 1996.

(B) Reflects Kilroy Group audited historical combined balance sheet as of September 30, 1996.

(C) Reflects the cost of the Acquisition Properties.

The Acquisition Properties, all of which will be acquired from unaffiliated third parties, are as follows:

PROPERTY                  CASH PURCHASE PRICE            SELLER
--------                  -------------------            ------
Westlake Plaza Centre....       $13,235       Westlake Plaza Partners
Long Beach Phase I.......        23,488       The Northwestern Mutual Life
                                              Insurance Company
La Palma Business
 Center..................        12,208       Horowitz Brothers 1975 Trust
Monarch Building.........         9,091       ARGO REO Limited Partnership
                                -------
    Total................       $58,022
                                =======

The acquisition of the Acquisition Properties will be accounted for as purchase transactions. The operations of the Sellers were not acquired and land and buildings were the only assets purchased. The cost of the properties will be allocated as follows:

Land............................................................. $19,297
Buildings and improvements.......................................  38,725
                                                                  -------
                                                                  $58,022
                                                                  =======

(D) The adjustment to pro forma cash and cash equivalents was determined as follows:

. Net proceeds from the Offering after underwriting discount and
  estimated issuance costs of $19,420............................ $ 206,580
. Net proceeds from the $84.0 Million Loan bearing interest at
  8.2% and the $12.0 million SeaTac Loan bearing interest at 30-
  day LIBOR plus 300 basis points after estimated issuance cost
  of $480........................................................    95,520
                                                                  ---------
. Net proceeds...................................................   302,100
. Repayment of mortgage debts net of forgiveness of $4,062 and
  including $338 of additional loan fees ........................  (220,322)
. Purchase of Acquisition Properties.............................   (58,022)
. Payment of accrued interest....................................      (912)
. Payment of debt issuance costs.................................    (1,350)
                                                                  ---------
Net increase in cash and cash equivalents........................ $  21,494
                                                                  =========
(E)Reflects the net increase as follows:
. Issuance costs of the Mortgage Loans and the $100 million
 Credit Facility................................................. $   1,830
. Write-off of loan costs relating to repayment of mortgage
 debt............................................................    (1,806)
                                                                  ---------
Net increase in deferred charge.................................. $      24
                                                                  =========

F-3

KILROY REALTY CORPORATION

NOTES TO PRO FORMA CONDENSED CONSOLIDATED
BALANCE SHEET (UNAUDITED)--(CONTINUED)
(DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

(F) Reflects the net decrease as follows:

. Issuance of $84.0 Million Loan payable monthly until maturity
  in 2005....................................................... $  84,000
. Issuance of $12.0 million SeaTac Loan.........................    12,000
. Repayment of mortgage debt from net proceeds of the Offering
  and the Mortgage Loans........................................  (224,046)
                                                                 ---------
Net decrease in mortgage debt................................... $(128,046)
                                                                 =========

(G) Amount represents a liability for construction costs which will not be assumed by Kilroy Realty Corporation.

(H) Amount represents accrued interest which will not be assumed by Kilroy Realty Corporation ($732) and accrued interest forgiven ($1,894) and paid ($912) in connection with the repayment of mortgage debt.

(I) Amount represents the portion of accrued cost of option buy-out which will not be assumed by Kilroy Realty Corporation.

(J) Reflects the estimated minority interest of the Continuing Investors in the Operating Partnership computed as follows:

Pro forma total assets.......................................... $ 210,602
Pro forma total liabilities.....................................  (109,981)
                                                                 ---------
Pro forma net book value of Operating Partnership............... $ 100,621
                                                                 =========
Minority interest of Continuing Investors at 19.2%.............. $  19,319
                                                                 =========

(K) Reflects the issuance of 11,300,000 shares of Common Stock, par value $.01 per share, at an assumed initial Offering price of $20.00 per share. The following table sets forth the adjustments to additional paid-in capital:

. Net proceeds from the Offering of Common Stock after
  underwriting discounts and commissions and estimated issuance
  costs of $19,420................................................  $206,580
  Less: par value of Common Stock of 11,300,000 shares at $.01 per
  share...........................................................      (113)
. Accrued interest which will not be assumed by Kilroy Realty
  Corporation.....................................................       732
. Write-off of loan costs relating to repayment of mortgage debt..    (1,806)
. Portion of liability for option buy-out cost which will not be
  assumed by Kilroy Realty Corporation............................     2,260
. Net gain on repayment of mortgage debt and accrued interest.....     5,618
. Liability for construction costs which will not be assumed by
  Kilroy Realty Corporation.......................................       460
                                                                    --------
Net adjustment to additional paid-in capital......................  $213,731
                                                                    ========

(L) Reflects the reclassification of the accumulated deficit.

F-4

KILROY REALTY CORPORATION

PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

NINE MONTHS ENDED SEPTEMBER 30, 1996 AND YEAR ENDED DECEMBER 31, 1995
(DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

The unaudited pro forma condensed consolidated statements of operations are presented as if (i) the transfer of the Properties (other than the Acquisition Properties) and business and operations of the Kilroy Group pursuant to the Formation Transactions and (ii) the Offering and the Mortgage Loans, and the use of proceeds thereof to repay indebtedness and purchase the Acquisition Properties, each had occurred on January 1, 1995. Such pro forma information is based upon the historical results of operations of the Kilroy Group for the nine months ended September 30, 1996, and the year ended December 31, 1995. This pro forma condensed consolidated statement of operations should be read in conjunction with the pro forma condensed consolidated balance sheet of the Company and the historical combined financial statements and notes thereto of the Kilroy Group and the historical combined summaries of certain revenues and certain expenses of the Acquisition Properties and notes thereto included elsewhere in this Prospectus. Reference is also made to "The Company" and "Use of Proceeds."

The unaudited pro forma condensed consolidated statement of operations is not necessarily indicative of what the actual results of operations of the Company would have been assuming the Company had been formed and the consummation of the Formation Transactions, the Offering and the Mortgage Loans and the use of proceeds thereof, and the acquisition of the Acquisition Properties at January 1, 1995, nor does it purport to represent the results of operations of future periods of the Company.

F-5

KILROY REALTY CORPORATION

PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

                               NINE MONTHS ENDED SEPTEMBER 30, 1996
                    ----------------------------------------------------------------
                      KILROY                                            COMPANY PRO
                      GROUP    ACQUISITION  PRO FORMA     PRO FORMA        FORMA
                    HISTORICAL PROPERTIES   SUBSIDIARY   ADJUSTMENTS    CONSOLIDATED
                    ---------- -----------  ----------   -----------    ------------
REVENUES:
 Rental income....   $25,156     $5,875                   $   (396)(A)   $   30,635
 Tenant
 reimbursements...     2,583        743                                       3,326
 Parking..........     1,317                                                  1,317
 Development and
  management
  fees............       580                  $(580)(B)
 Lease termination
 fees.............
 Sale of air
 rights...........
 Other income.....        65        299                                         364
                     -------     ------       -----       --------       ----------
  Total revenues..    29,701      6,917        (580)          (396)          35,642
                     -------     ------       -----       --------       ----------
EXPENSES:
 Property
 expenses.........     5,042      1,315                         54 (C)        6,411
 Real estate
 taxes............       970        417                         70 (D)        1,457
 General and
  administrative..     1,607        200                      1,255 (E)        3,062
 Ground lease.....       579        253                                         832
 Option buy-out
  cost............     3,150                                                  3,150
 Development and
  management
  expenses........       584                   (584)(B)
 Interest
 expense..........    16,234                               (10,297)(F)        5,937
 Depreciation and
  amortization....     6,838        830(G)                                    7,668
                     -------     ------       -----       --------       ----------
  Total expenses..    35,004      3,015        (584)        (8,918)          28,517
                     -------     ------       -----       --------       ----------
 Income (loss)
  from operations
  before equity in
  income
  of subsidiaries
  and minority
  interest........    (5,303)     3,902           4          8,522            7,125
 Equity in income
  of subsidiary...                                             (58)(B)          (58)
 Minority
 interest.........                                          (1,357)(H)       (1,357)
                     -------     ------       -----       --------       ----------
  Net income
   (loss)            $(5,303)    $3,902       $   4       $  7,107       $    5,710
                     =======     ======       =====       ========       ==========
Average number of
 shares
 outstanding......                                                       11,360,000
                                                                         ==========
Net income per
 common share(I)..                                                       $     0.50
                                                                         ==========
                                   YEAR ENDED DECEMBER 31, 1995
                    -----------------------------------------------------------------
                      KILROY                                             COMPANY PRO
                      GROUP    ACQUISITION  PRO FORMA      PRO FORMA        FORMA
                    HISTORICAL PROPERTIES   SUBSIDIARY    ADJUSTMENTS    CONSOLIDATED
                    ---------- ------------ ------------- -------------- ------------
REVENUES:
 Rental income....    $32,314    $7,355                    $   (528)(A)   $   39,141
 Tenant
 reimbursements...      3,002       884                                        3,886
 Parking..........      1,582                                                  1,582
 Development and
  management
  fees............      1,156                $(1,156)(B)
 Lease termination
 fees.............        100                                                    100
 Sale of air
 rights...........      4,456                                                  4,456
 Other income.....        298       407                                          705
                      -------    ------      -------       --------       ----------
  Total revenues..     42,908     8,646       (1,156)          (528)          49,870
                      -------    ------      -------       --------       ----------
EXPENSES:
 Property
 expenses.........      6,834     1,882                         (48)(C)        8,668
 Real estate
 taxes............      1,416       495                          91 (D)        2,002
 General and
  administrative..      2,152       303                       1,628 (E)        4,083
 Ground lease.....        789       338                                        1,127
 Option buy-out
  cost............
 Development and
  management
  expenses........        737                   (737)(B)
 Interest
 expense..........     24,159                               (16,243)(F)        7,916
 Depreciation and
  amortization....      9,474     1,106(G)                                    10,580
                      -------    ------      -------       --------       ----------
  Total expenses..     45,561     4,124         (737)       (14,572)          34,376
                      -------    ------      -------       --------       ----------
 Income (loss)
  from operations
  before equity in
  income
  of subsidiaries
  and minority
  interest........     (2,653)    4,522         (419)        14,044           15,494
 Equity in income
  of subsidiary...                                              136 (B)          136
 Minority
 interest.........                                           (3,001)(H)       (3,001)
                      -------    ------      -------       --------       ----------
  Net income
   (loss)             $(2,653)   $4,522      $  (419)      $ 11,179       $   12,629
                      =======    ======      =======       ========       ==========
Average number of
 shares
 outstanding......                                                        11,360,000
                                                                          ==========
Net income per
 common share(I)..                                                        $     1.11
                                                                          ==========

F-6

KILROY REALTY CORPORATION

NOTES TO PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(UNAUDITED) (DOLLARS IN THOUSANDS)

(A) Represents the elimination of rental income received from Kilroy Industries.

(B) Represents the elimination of the Services Company's gross revenues and expenses and the recording of the equity in income of the Services Company net of income taxes.

                                               NINE MONTHS      YEAR ENDED
                                           ENDED SEPTEMBER 30, DECEMBER 31,
                                                  1996             1995
                                           ------------------- ------------
Development and management fees...........        $ 580           $1,156
Development and management expenses.......         (584)            (737)
Elimination of nonrecurring Services
 Company expenses.........................           80
                                                  -----           ------
                                                     76              419
Elimination of management fees earned on
 one of the Acquisition Properties........         (137)            (181)
                                                  -----           ------
                                                    (61)             238
Income tax expense........................                           (95)
                                                  -----           ------
Estimated service company net income
 (loss)...................................          (61)             143
                                                  -----           ------
At 95% economic interest..................        $ (58)          $  136
                                                  =====           ======

(C) Represents the elimination of management fees charged to the Kilroy Group by Kilroy Industries and the reclassification of expenses which previously had not been allocated to individual properties.

(D) Represents incremental property taxes on the Acquisition Properties due to change of ownership.

(E) Represents the estimated incremental increases in other general and administrative expenses, including, without limitation, the incremental general and administrative expenses to be incurred as a public company, increases in other G&A expenses, less the effect of the reclassification of property expenses which previously had not been allocated to individual properties.

(F) Reflects reduction of interest expenses associated with the mortgage debts assumed to be repaid using net proceeds from the Offering:

                                               NINE MONTHS      YEAR ENDED
                                           ENDED SEPTEMBER 30, DECEMBER 31,
                                                  1996             1995
                                           ------------------- ------------
. Interest expense on the Mortgage Loans
  (fixed interest rate of 8.2% on $84,000
  with 25-year amortization; variable
  interest rate of LIBOR plus 3.0% on
  $12,000)................................      $  5,892         $  7,856
. Amortization of the issuance costs on
  the Mortgage Loans......................            45               60
. Interest expense on debt assumed to be
  retired.................................       (16,234)         (24,159)
                                                --------         --------
  Net interest expense reduction..........      $(10,297)        $(16,243)
                                                ========         ========

(G) Represents depreciation expense calculated based on the cost of the Acquisition Properties' buildings depreciated on the straight-line method over a 35 year life.

(H) Represents the income allocated to the 19.2% minority interest (Units) in the Operating Partnership owned by Continuing Investors.

(I) Pro forma net income per share of Common Stock is based upon 11,300,000 shares of Common Stock assumed to be outstanding in connection with the Offering and 60,000 restricted shares of Common Stock granted to an officer of the Company.

F-7

INDEPENDENT AUDITORS' REPORT

To the Board of Directors and Stockholder of Kilroy Realty Corporation:

We have audited the accompanying balance sheet of Kilroy Realty Corporation (the "Company") as of September 30, 1996. This financial statement is the responsibility of the Company's management. Our responsibility is to express an opinion on this financial statement based on our audit.

We conducted our audit in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the balance sheet is free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the balance sheet. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall balance sheet presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, such balance sheet presents fairly, in all material respects, the financial position of the Company at September 30, 1996 in conformity with generally accepted accounting principles.

Deloitte & Touche LLP
Los Angeles, California
October 25, 1996

F-8

KILROY REALTY CORPORATION

BALANCE SHEET

SEPTEMBER 30, 1996

ASSETS
Cash............................................................... $1,000
                                                                    ======
STOCKHOLDER'S EQUITY
Common Stock, $.01 par value, 10,000,000 shares authorized;
 50 shares issued and outstanding.................................. $1,000
                                                                    ======

See notes to balance sheet.

F-9

KILROY REALTY CORPORATION

NOTES TO BALANCE SHEET

SEPTEMBER 30, 1996

1. FORMATION OF THE COMPANY

Kilroy Realty Corporation (the "Company") was incorporated in Maryland on September 13, 1996. The Company will file a Registration Statement on Form S- 11 with the Securities and Exchange Commission with respect to a proposed public offering (the "Offering") of 11,300,000 shares of Common Stock. The Company has been formed to succeed to the business of the Kilroy Group consisting of a portfolio of 19 office and industrial properties (the "Kilroy Properties") and the real estate ownership, acquisition, development, leasing and management businesses historically conducted by Kilroy Industries and related partnerships. The Company's assets will be owned and controlled by, and all of its operations will be conducted through, Kilroy Realty, L.P. (the "Operating Partnership") and other subsidiaries. The Company will control, as the sole general partner, and will initially own an approximately 80.8% interest in, the Operating Partnership. The Operating Partnership will conduct certain development services through Kilroy Services, Inc. ("Services Company"). John B. Kilroy, Sr. and John B. Kilroy, Jr. together will own 100% of the voting common stock representing a 5% economic interest in the Services Company. The Operating Partnership will own 100% of the nonvoting preferred stock representing 95% of the economic interest in the Services Company. The nonvoting preferred stock will not have any voting rights except as provided by law, will not be convertible or exchangeable into other securities of the Company, will have no redemption rights or any appraisal rights except as provided by law and the holders thereof will have no preemptive rights to subscribe for any securities of the Company. Holders of the nonvoting preferred stock will participate in all distributions from the Services Company and receive 95% of all distributions, if and when such distributions are authorized and declared by the Services Company's board of directors out of funds legally available therefor. Upon dissolution, holders of nonvoting preferred stock will be entitled to receive preferential liquidating distributions in an amount equal to 95% of the value of the Services Company's assets. The Operating Partnership's investment in the Services Company will be accounted for under the equity method. As of October 25, 1996, the Services Company had not yet been formed.

Prior to and simultaneous with the consummation of the Offering, the Company, the Operating Partnership and the Continuing Investors intend to engage in certain formation transactions (the "Formation Transactions") summarized as follows:

(i) The Continuing Investors will contribute all of their interests in the Kilroy Properties to the Operating Partnership in exchange for units representing limited partnership interests in the Operating Partnership ("Units"). The transfer of the Kilroy Properties, which are under the common control of John B. Kilroy, Sr. and John B. Kilroy, Jr., to the Operating Partnership will be accounted for at the historical cost of the Continuing Investors' interests therein similar to a pooling of interests;

(ii) The Company will sell shares of Common Stock in the Offering and will contribute the net proceeds from the Offering (estimated to be approximately $206.6 million after deduction of estimated offering expenses) to the Operating Partnership in exchange for Units in the Operating Partnership. The Operating Partnership will use substantially all of such net proceeds, together with the net proceeds of borrowings under the Mortgage Loans, discussed below, for the repayment of certain existing mortgage and loan indebtedness on the Kilroy Properties, the acquisition of certain properties (the "Acquisition Properties") and additions to working capital cash reserves;

(iii) The Operating Partnership will enter into an $84.0 million secured mortgage financing and a $12.0 million secured mortgage financing (the "Mortgage Loans"), which will be nonrecourse obligations of the Operating Partnership; and

(iv) The Company will amend its charter and authorize 150,000,000 shares of Common Stock, $.01 par value per share, and 30,000,000 shares of Preferred Stock, par value $.01 per share.

F-10

KILROY REALTY CORPORATION

NOTES TO BALANCE SHEET--(CONTINUED)

SEPTEMBER 30, 1996

2. INCOME TAXES

It is the intent of the Company to qualify as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended. As a REIT, the Company generally will not be subject to federal income tax to the extent that it distributes at least 95% of its REIT taxable income to its stockholders. REITs are subject to a number of organizational and operational requirements. If the Company fails to qualify as a REIT in any taxable year, the Company will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

3. OFFERING COSTS

In connection with the Offering, affiliates have or will incur legal, accounting and related costs which will be reimbursed by the Company upon the consummation of the Offering. These costs will be deducted from the gross proceeds of the Offering.

4. STOCK INCENTIVE PLAN AND RESTRICTED STOCK GRANT

Prior to the consummation of the Offering, the Company intends to adopt and have its shareholders approve a stock incentive plan (the "Stock Incentive Plan"), for the purpose of attracting and retaining executive officers, directors and employees. A maximum of 1,460,000 shares of Common Stock (subject to adjustment) will be reserved by the Company for issuance under the Stock Incentive Plan, including 60,000 restricted shares of Common Stock which will be issued to an officer of the Company upon consummation of the Offering and which will vest in equal annual installments over a three-year period.

******

F-11

INDEPENDENT AUDITORS' REPORT

To the Partners of Kilroy Group:

We have audited the accompanying combined balance sheets of Kilroy Group (described in Note 1) as of September 30, 1996 and December 31, 1995 and 1994, and the related combined statements of operations, accumulated deficit, and cash flows for the nine months ended September 30, 1996 and each of the three years in the period ended December 31, 1995 and the combined statements of operations and cash flows for the nine months ended September 30, 1995. These financial statements are the responsibility of the management of Kilroy Group. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform our audits to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such financial statements present fairly, in all material respects, the financial position of Kilroy Group as of September 30, 1996 and December 31, 1995 and 1994, and the results of its operations and its cash flows for the nine months ended September 30, 1996 and 1995 and for each of the three years in the period ended December 31, 1995 in conformity with generally accepted accounting principles.

Deloitte & Touche LLP
Los Angeles, California
December 20, 1996

F-12

KILROY GROUP

COMBINED BALANCE SHEETS

SEPTEMBER 30, 1996 AND DECEMBER 31, 1995 AND 1994
(IN THOUSANDS)

                                                             DECEMBER 31,
                                            SEPTEMBER 30, --------------------
                                                1996        1995       1994
                                            ------------- ---------  ---------
                  ASSETS
RENTAL PROPERTIES (Notes 1, 2, 4, 5, 6 and
 9):
  Land.....................................   $  12,490   $  12,490  $  12,490
  Buildings and improvements...............     214,637     212,493    211,331
                                              ---------   ---------  ---------
    Total rental properties................     227,127     224,983    223,821
  Accumulated depreciation and
   amortization............................    (107,722)   (101,774)   (93,475)
                                              ---------   ---------  ---------
    Rental properties, net.................     119,405     123,209    130,346
TENANT RECEIVABLES, NET (Note 2)...........       3,363       3,973      3,961
DEFERRED CHARGES AND OTHER ASSETS, NET
 (Notes 2, 3 and 7)........................       8,294       5,675      8,944
                                              ---------   ---------  ---------
TOTAL......................................   $ 131,062   $ 132,857  $ 143,251
                                              =========   =========  =========
    LIABILITIES AND ACCUMULATED DEFICIT
LIABILITIES:
  Debt (Notes 4, 8 and 9)..................   $ 224,046   $ 233,857  $ 250,059
  Accounts payable and accrued expenses....       2,600       2,590      3,482
  Accrued construction costs (Note 2)......         460         874        --
  Accrued property taxes (Note 2)..........       1,007       1,399      1,563
  Property tax refund payable to tenants
   (Note 3)................................         --          --       1,500
  Accrued interest payable (Note 4)........       3,538       7,251      8,057
  Accrued cost of option buy-out and tenant
   improvements (Note 5)...................       3,650         --         --
  Rents received in advance and tenant
   security deposits (Note 2)..............       8,984       8,712      8,924
                                              ---------   ---------  ---------
    Total liabilities......................     244,285     254,683    273,585
COMMITMENTS AND CONTINGENCIES (Note 6).....
ACCUMULATED DEFICIT (Note 1)...............    (113,223)   (121,826)  (130,334)
                                              ---------   ---------  ---------
TOTAL......................................   $ 131,062   $ 132,857  $ 143,251
                                              =========   =========  =========

See notes to combined financial statements.

F-13

KILROY GROUP

COMBINED STATEMENTS OF OPERATIONS

NINE MONTHS ENDED SEPTEMBER 30, 1996 AND 1995 AND
YEARS ENDED DECEMBER 31, 1995, 1994 AND 1993
(IN THOUSANDS)

                                     NINE MONTHS
                                   ENDED SEPTEMBER
                                         30,               DECEMBER 31,
                                   -----------------  -------------------------
                                    1996      1995     1995     1994     1993
                                   -------  --------  -------  -------  -------
REVENUES (Notes 2 and 5):
 Rental income (Note 7)..........  $25,156  $ 24,056  $32,314  $31,220  $34,239
 Tenant reimbursements (Note 3)..    2,583     2,377    3,002    1,643    4,916
 Parking.........................    1,317     1,193    1,582    1,357    1,360
 Development and management
  fees...........................      580       926    1,156      919      751
 Sale of air rights (Note 2).....      --      4,456    4,456      --       --
 Lease termination fees..........      --        --       100      300    5,190
 Other income (Note 3)...........       65       211      298      784      188
                                   -------  --------  -------  -------  -------
   Total revenues................   29,701    33,219   42,908   36,223   46,644
                                   -------  --------  -------  -------  -------
EXPENSES:
 Property expenses (Notes 2 and
  7).............................    5,042     5,045    6,834    6,000    6,391
 Real estate taxes (Note 3)......      970     1,088    1,416     (448)   2,984
 General and administrative......    1,607     1,554    2,152    2,467    1,113
 Ground leases (Note 6)..........      579       542      789      913      941
 Development and management
  expenses.......................      584       564      737      468      581
 Option buy-out cost (Note 5)....    3,150       --       --       --       --
 Interest expense................   16,234    18,660   24,159   25,376   25,805
 Depreciation and amortization...    6,838     7,171    9,474    9,962   10,905
                                   -------  --------  -------  -------  -------
   Total expenses................   35,004    34,624   45,561   44,738   48,720
                                   -------  --------  -------  -------  -------
LOSS BEFORE EXTRAORDINARY GAINS..   (5,303)   (1,405)  (2,653)  (8,515)  (2,076)
EXTRAORDINARY GAINS
 (Note 4)........................   20,095    15,267   15,267    1,847      --
                                   -------  --------  -------  -------  -------
NET INCOME (LOSS)................  $14,792  $ 13,862  $12,614  $(6,668) $(2,076)
                                   =======  ========  =======  =======  =======

See notes to combined financial statements.

F-14

KILROY GROUP

COMBINED STATEMENTS OF ACCUMULATED DEFICIT

YEARS ENDED DECEMBER 31, 1995, 1994 AND 1993 AND
NINE MONTHS ENDED SEPTEMBER 30, 1996
(IN THOUSANDS)

BALANCE, JANUARY 1, 1993............................................ $(102,148)
  Deemed and actual distributions to partners, net of
   contributions....................................................   (10,736)
  Net loss..........................................................    (2,076)
                                                                     ---------
BALANCE, DECEMBER 31, 1993..........................................  (114,960)
  Deemed and actual distributions to partners, net of
   contributions....................................................    (8,706)
  Net loss..........................................................    (6,668)
                                                                     ---------
BALANCE, DECEMBER 31, 1994..........................................  (130,334)
  Deemed and actual distributions to partners, net of
   contributions....................................................    (4,106)
  Net income........................................................    12,614
                                                                     ---------
BALANCE, DECEMBER 31, 1995..........................................  (121,826)
  Deemed and actual distributions to partners, net of
   contributions....................................................    (6,189)
  Net income........................................................    14,792
                                                                     ---------
BALANCE, SEPTEMBER 30, 1996......................................... $(113,223)
                                                                     =========

See notes to combined financial statements.

F-15

KILROY GROUP

COMBINED STATEMENTS OF CASH FLOWS

NINE MONTHS ENDED SEPTEMBER 30, 1996 AND 1995 AND
YEARS ENDED DECEMBER 31, 1995, 1994 AND 1993
(IN THOUSANDS)

                                 NINE MONTHS
                                    ENDED
                                SEPTEMBER 30,            DECEMBER 31,
                             --------------------  ---------------------------
                               1996       1995       1995      1994     1993
                             ---------  ---------  ---------  -------  -------
CASH FLOWS FROM OPERATING
 ACTIVITIES:
 Net income (loss).......... $  14,792  $  13,862  $  12,614  $(6,668) $(2,076)
 Adjustment to reconcile net
  income (loss) to net cash
  provided by (used in)
  operating activities:
  Depreciation and
   amortization.............     6,838      7,171      9,474    9,962   10,905
  Net (increase) decrease:
   Provision for bad debts..       920        839      1,000      909      350
   Extraordinary gains......   (20,095)   (15,267)   (15,267)  (1,847)     --
  Changes in assets and
   liabilities:
   Tenant receivables.......      (310)      (571)    (1,012)    (760)    (695)
   Deferred charges and
    other assets, net ......    (1,688)     2,331      2,095   (3,212)      34
   Accounts payable and
    accrued expenses........        10      1,519       (892)   2,274     (698)
   Accrued construction
    costs...................      (414)       --         874      --       --
   Accrued property taxes...      (392)      (671)      (164)  (2,411)   1,676
   Property tax refund
    payable to tenants......       --      (1,500)    (1,500)   1,500      --
   Accrued interest
    payable.................     1,945      2,274      3,061    1,846    1,368
   Accrued cost of option
    buy-out and tenant
    improvements............     3,650        --         --       --       --
   Rents received in advance
    and tenant security
    deposits................       272       (717)      (212)   5,014      593
                             ---------  ---------  ---------  -------  -------
    Net cash provided by
     operating activities...     5,528      9,270     10,071    6,607   11,457
                             ---------  ---------  ---------  -------  -------
CASH FLOWS FROM INVESTING
 ACTIVITIES:
 Expenditures for rental
  properties................    (2,140)      (446)    (1,162)  (1,765)    (633)
 Reimbursement of tenant
  improvements..............       --         --         --       --     2,661
                             ---------  ---------  ---------  -------  -------
    Net cash (used in)
     provided by investing
     activities.............    (2,140)      (446)    (1,162)  (1,765)   2,028
                             ---------  ---------  ---------  -------  -------
CASH FLOWS FROM FINANCING
 ACTIVITIES:
 Net proceeds received from
  debt......................    21,057        489        625   11,127    7,191
 Principal payments on
  debt......................   (18,256)    (2,207)    (5,428)  (7,263)  (9,940)
 Deemed and actual
  distributions to
  partners..................    (6,189)    (7,106)    (4,106)  (8,706) (10,736)
                             ---------  ---------  ---------  -------  -------
    Net cash (used in)
     provided by financing
     activities............. $  (3,388) $  (8,824) $  (8,909)  (4,842) (13,485)
                             =========  =========  =========  =======  =======
SUPPLEMENTAL CASH FLOW
 INFORMATION:
 Cash paid during the period
  for interest.............. $ (14,289) $ (16,386) $ (21,098) (23,530) (24,437)
                             =========  =========  =========  =======  =======

See notes to combined financial statements.

F-16

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS

NINE MONTHS ENDED SEPTEMBER 30, 1996 AND 1995 AND
YEARS ENDED DECEMBER 31, 1995, 1994 AND 1993

1. ORGANIZATION AND BASIS OF PRESENTATION

Organization--Kilroy Group (not a legal entity) consists of the combination of Kilroy Industries ("KI") and general and limited partnerships, a limited liability company and trusts, the properties of which are under common control of KI and/or its stockholders, John B. Kilroy, Sr. and John B. Kilroy, Jr. The entities referred to collectively as Kilroy Group ("KG") are engaged in the acquisition, development, ownership and operation of 19 office and industrial properties (the "Kilroy Properties") located in California, Washington and Arizona. KI has historically provided acquisition, financing, construction and leasing services with respect to the Kilroy Properties. KI has also provided development services to third-party owners of properties for a fee.

The names of the corporation, partnerships and trusts which directly own the Kilroy Properties are as follows:

                        PERCENTAGE OWNERSHIP
                         OF PROPERTY BY KI,
                        JOHN B. KILROY, SR.,
                               AND/OR
     ENTITY NAME        JOHN B. KILROY, JR.                PROPERTY                       LOCATION
     -----------        --------------------               --------                       --------
OFFICE:
Kilroy Airport
 Associates                   100%           Kilroy Airport Center at El Segundo:
                                              2240 E. Imperial Highway            El Segundo, California
                                              2250 E. Imperial Highway            El Segundo, California
                                              2260 E. Imperial Highway            El Segundo, California
Kilroy Long Beach
 Partner II                    99%(1)        Kilroy Airport Center Long Beach:
                                              3750 Kilroy Airport Way             Long Beach, California
                                              3760 Kilroy Airport Way             Long Beach, California
                                              3780 Kilroy Airport Way             Long Beach, California
Kilroy Freehold
 Industrial
 Development
 Organization
 ("K-FIDO")                    83%(2)        185/181 S. Douglas Street            El Segundo, California
SeaTac Properties Ltd.         99%(1)        SeaTac Office Center:
                                              17900 Pacific Highway               Seattle, Washington
                                              17930 Pacific Highway               Seattle, Washington
                                              18000 Pacific Highway               Seattle, Washington
INDUSTRIAL:
Kilroy Industries             100%           2031 E. Mariposa Avenue              El Segundo, California
Kilroy Building 73
 Partnership                  100%           3332 E. La Palma Avenue              Anaheim, California
K-FIDO                         83%(2)        2260 E. El Segundo Boulevard         El Segundo, California
K-FIDO                         83%(2)        2265 E. El Segundo Boulevard         El Segundo, California
K-FIDO                         83%(2)        2270 E. El Segundo Boulevard         El Segundo, California
A-102 Trust                    20%(2)        5115 N. 27th Avenue                  Phoenix, Arizona
KI 1979 Trust                  85%(2)        1000 E. Ball Road                    Anaheim, California
KI 1979 Trust                  85%(2)        1230 S. Lewis Street                 Anaheim, California
Kilroy Garden Grove
 Associates                   100%           12681/12691 Pala Drive               Garden Grove, California


(1) The balance of the ownership interests are held by Marshall L. McDaniel (representing an aggregate interest of approximately 1%).
(2) The balance of the ownership interests are held by the four adult daughters of John B. Kilroy, Sr.

F-17

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

The development services of KG relating to non-owned properties have been conducted by KI and Kilroy Technologies Company, LLC, both wholly-owned by John B. Kilroy, Sr. and John B. Kilroy, Jr.

Certain of the named entities are owned by other entities. The Kilroy Properties are ultimately owned beneficially in the proportions identified above.

Basis of Presentation--The accompanying combined financial statements of KG have been presented on a combined basis because of the common ownership and management and because the entities are expected to be the subject of a business combination with Kilroy Realty Corporation (the "Company"), a recently formed Maryland corporation which is expected to qualify as a real estate investment trust under the Internal Revenue Code of 1986, as amended. Concurrently with the business combination, the Company intends to raise capital through an initial public offering of Common Stock, mortgage loans and a credit facility to be secured by mortgage liens on the properties. The business combination has been structured to allow the beneficial owners of the Kilroy Properties (including members of KG) to receive limited partnership interests in Kilroy Realty, L.P. (the "Operating Partnership") aggregating a 19.2% interest. The Company will be the managing general partner of the Operating Partnership, which will hold the operating assets and will manage the Kilroy Properties. Certain other properties and operations affiliated with KI have been excluded as they are not compatible with the investment purposes of the Company. Deemed and actual cash distributions to partners, net of contributions, included in the combined statements of accumulated deficit generally represent distributions of the cash flows generated by KG, and advances to partners and KI, as well as related-party transactions (see Note 7).

2. SIGNIFICANT ACCOUNTING POLICIES

Rental Properties--Rental properties are stated at historical cost less accumulated depreciation, which, in the opinion of KG's management, is not in excess of net realizable value. Net realizable value does not purport to represent fair market value. Costs incurred for the acquisition, renovation and betterment of the properties are capitalized. Maintenance and repairs are charged to expense as incurred.

During 1995, the Company adopted Statement of Financial Accounting Standards ("SFAS") No. 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed of." Under this standard, if impairment conditions exist, the Company makes an assessment of the recoverability of the carrying amounts of individual properties by estimating the future undiscounted cash flows, excluding interest charges, on a property by property basis. If the carrying amount exceeds the aggregate future cash flows, the Company would recognize an impairment loss to the extent the carrying amount exceeds the fair value of the property. Any long-lived assets to be disposed of are to be valued at estimated fair value less costs to sell. Based on such periodic assessments, no impairments have been determined and, therefore, no real estate carrying amounts have been adjusted.

Depreciation and Amortization--The cost of buildings and improvements are depreciated on the straight-line method over estimated useful lives, as follows:

Buildings--25 to 40 years
Tenant improvements--shorter of lease term or useful lives ranging from 5 to 20 years

Deferred Charges--Deferred charges include deferred leasing costs and loan fees. Leasing costs include leasing commissions that are amortized on the straight-line basis over the initial lives of the leases, which range from 5 to 10 years. Deferred loan fees are amortized on a straight-line basis over the terms of the respective loans, which approximates the effective interest method.

Accrued Property Taxes--As of September 30, 1996 and December 31, 1995 and 1994, $202,000, $696,000 and $783,000, respectively, of accrued property taxes were past due.

F-18

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

Revenue Recognition and Tenant Receivables--Leases with tenants are accounted for as operating leases. Minimum annual rentals are recognized on a straight-line basis over the lease term. Unbilled deferred rent represents the amount that expected straight-line rental income exceeds rents currently due under the lease agreement. Total tenant receivables consists of the following amounts:

                                                            DECEMBER 31,
                                             SEPTEMBER 30, ---------------
                                                 1996       1995     1994
                                             ------------- -------  ------
                                                    (IN THOUSANDS)
Tenant rent and reimbursements receivable...    $ 3,889    $ 3,171  $1,981
Allowance for uncollectible rent............     (2,757)    (1,837)   (837)
Unbilled deferred rent......................      2,231      2,639   2,817
                                                -------    -------  ------
Tenants receivables, net....................    $ 3,363    $ 3,973  $3,961
                                                =======    =======  ======

Included in tenant rent and reimbursements receivable are additional rentals based on common area maintenance expenses and certain other expenses that are accrued in the period in which the related expenses are incurred.

Rents Received in Advance and Tenant Security Deposits--The balances as of September 30, 1996 and December 31, 1995 and 1994 include a $4,000,000 payment received from a tenant in connection with the tenant's obligation to remove tenant improvements upon termination of the lease. Such payment is nonrefundable and will be recognized as income, net of the costs of removal of improvements, upon termination of the lease. The related lease expires in 1999, subject to a five-year option to renew.

Use of Estimates--The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Parking--The Kilroy Airport Center--LAX and the SeaTac Office Center include parking facilities. KG records as revenue the gross parking receipts. KG contracts with parking management companies to operate the parking facilities, and such contract costs are included in property expenses.

Development Services--Development and management fees represent fees earned by KG for supervision services provided for building development and management of nonowned properties. Fees are typically a percentage of total development costs plus reimbursement for certain expenses. Unreimbursed expenses are recorded as development expenses and include items such as wages, equipment rental, supplies, etc.

Sale of Air Rights--In 1995, based on an agreement between KG and the California Transportation Commission, KG received $4,456,000, net of related expenses, for granting temporary construction and permanent air right easements over a portion of its property for the construction of a freeway on- ramp. In connection with this transaction, KG accrued $874,000 as of December 31, 1995 for the costs of restoration of the property after construction of the on-ramp.

F-19

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

3. DEFERRED CHARGES AND OTHER ASSETS

Deferred charges and other assets are summarized as follows:

                                                           DECEMBER 31,
                                           SEPTEMBER 30, -----------------
                                               1996        1995     1994
                                           ------------- --------  -------
                                                   (IN THOUSANDS)
Deferred assets:
  Deferred financing costs................    $ 2,631    $  3,436  $ 3,333
  Deferred leasing costs (Note 7).........     11,069      11,327   10,650
                                              -------    --------  -------
    Total deferred assets.................     13,700      14,763   13,983
Accumulated amortization..................     (6,791)    (10,142)  (8,934)
                                              -------    --------  -------
Deferred assets, net......................      6,909       4,621    5,049
Prepaid expenses..........................      1,385       1,054    1,075
Property tax refunds receivable...........       ---         ---     2,820
                                              -------    --------  -------
    Total deferred charges and other
     assets...............................    $ 8,294    $  5,675  $ 8,944
                                              =======    ========  =======

Property tax refunds, which were collected in 1995, relate to appeals filed by KG in the fourth quarter of 1994 for refunds of property taxes paid in 1990 through 1994 and include related interest income of $441,000. Such amounts were recorded as a reduction of property taxes and as other income during the year ended December 31, 1994. Of these property tax recoveries, approximately $1,500,000 was refunded to tenants of the related properties and has been recorded as a reduction to tenant reimbursements income during the year ended December 31, 1994.

4. DEBT Debt consists of the following:

                                                             DECEMBER 31,
                                             SEPTEMBER 30, -----------------
                                                 1996        1995     1994
                                             ------------- -------- --------
                                                     (IN THOUSANDS)
Bank notes payable, due in December 1994,
 bearing interest at prime (8.5% at
 December 31, 1995)(a).....................        ---     $ 16,536 $ 30,536
Bank notes payable, due in January 1999,
 bearing interest at LIBOR + 1.15% (6.4% at
 September 30, 1996 and 6.9% at December
 31, 1995).................................    $ 56,168      54,811   54,186
Notes payable to finance company and
 related pension funds, maturing in 1997
 and 1998, bearing interest at rates from
 8.5% to 12.7%(b)(c).......................      28,537      33,447   33,705
Note payable to insurance company, maturing
 April 2001, bearing interest at 9.75%(d)..      20,162      20,162   21,173
Notes payable to insurance companies,
 maturing March 2006, bearing interest at
 9.5%(c)...................................       1,989      10,722   11,170
Note payable to insurance company due April
 2002, bearing interest at 9.25%(e)........      94,799      97,283   98,347
Notes payable to underwriter due in June
 1997, bearing
 interest at LIBOR + 3% (8.5% at September
 30, 1996)(c)..............................      21,525         --       --
Bank notes payable, due in July 2008,
 bearing interest at 10%...................         866         896      942
                                               --------    -------- --------
                                               $224,046    $233,857 $250,059
                                               ========    ======== ========


(a) In September 1995, a note payable to a bank of $14,000,000 due in December 1994 and accrued interest payable of $3,867,000 was retired by a cash payment of $2,600,000. KG recorded an extraordinary gain of

F-20

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

$15,267,000 as a result of this transaction. The remaining notes payable of $16,536,000 were in default as of December 31, 1995 and 1994. Past due interest on the remaining notes, approximately $5,003,000 at December 31, 1995, is included in accrued interest. See discussion below under (c) regarding settlement of this loan and accrued interest.
(b) During the nine months ended September 30, 1996, three of the notes payable totaling $16,608,000 were amended to extend the maturity dates from 1996 to 1997 and 1998. In May, 1996, an additional note with a principal balance of $2,500,000 which was due in February 1996 was amended to extend the maturity date from February 1996 to 1997. During June 1996, notes payable of $5,765,000 were amended to extend the maturity date from June 1996 to April 1998.
(c) On June 20, 1996, KG obtained a mortgage loan of $21,525,000 from one of the underwriters of the proposed public offering of common stock referred to in Note 1. Such loan is due on June 20, 1997 and bears interest at 3% above LIBOR. Fees of $2,279,000 were incurred in connection with obtaining this loan. An additional fee of $337,500 is payable if the loan is not repaid within 150 days after June 20, 1996. The proceeds were used to pay:
$2,100,000 as settlement of bank notes with an aggregate principal balance of $16,536,000 and $5,659,000 of unpaid interest, a note payable to an insurance company with a principal balance of $8,549,000 and a note payable to a finance company with a principal balance of $4,600,000. The forgiveness of $20,095,000 has been recorded as an extraordinary gain.
(d) KG is not currently making the required monthly principal installments of $239,000 on this note and accrued interest of $1,894,000 is unpaid as of September 30, 1996. The SeaTac Office Center is pledged as collateral for the note payable. On October 25, 1996, KG and the insurance company entered into a forbearance agreement which provides KG with the exclusive right to purchase the note payable for $16,100,000 on or before January 31, 1997. In the event KG does not acquire the loan, the fee owner of the property has the right from February 1, 1997 through February 28, 1997 to pay off the loan on the same terms and conditions. In the event KG is unable to acquire the loan on or prior to January 31, 1997, the fee owner has assigned its rights to KG for the period February 1, 1997 to February 10, 1997. If KG fails to perform any of its obligations under the agreement, an event of default shall occur and the insurance company shall have the right to pursue any and all remedies available under the agreement and the note payable, including foreclosure. It is contemplated that a portion of the proceeds from the initial public offering referred to in Note 1, will be used to purchase this note. KG believes it will be able to meet this commitment irrespective of the consummation of the Offering referred to in Note 1 based upon discussions with other sources of financing.
(e) Under an agreement with the insurance company, monthly payments of principal and interest are calculated based on gross receipts from leases of the property that secures the loan. All receipts from the property are deposited into a lock box account from which all operating costs, which must be approved by the lender, are to be paid. Monthly installments of principal and interest of $881,475 and property taxes are payable from the lockbox account and any deficiency must be funded by KG. There are certain provisions in the agreement that may require additional payments of principal.

In 1994, two notes payable to insurance companies, with an aggregate unpaid balance of $6,782,000 were paid after forgiveness of $1,847,000 of principal by the lenders, which has been recorded as an extraordinary gain.

The notes payable are secured by deeds of trust on all Kilroy Properties and the assignment of certain rents and leases associated with the related properties. The notes are generally due in monthly installments of principal and interest or interest only. As of September 30, 1996, approximately $37.2 million of notes payable are guaranteed by certain members of KG. Several notes contain restrictive covenants with which KG has complied as well as penalties for early repayment of principal equal to a percentage of the unpaid balance.

F-21

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

Aggregate future principal payments on notes payable are as follows:

                                                 SEPTEMBER 30, DECEMBER 31,
YEAR ENDING                                          1996          1995
-----------                                      ------------- ------------
                                                       (IN THOUSANDS)
 1996...........................................   $     41      $  4,301
 1997...........................................     64,174        69,935
 1998...........................................     10,317        10,626
 1999...........................................     58,658        57,301
 2000...........................................      2,722         2,722
 Thereafter.....................................     88,134        88,972
                                                   --------      --------
   Total........................................   $224,046      $233,857
                                                   ========      ========

5. FUTURE MINIMUM RENT

KG has operating leases with tenants that expire at various dates through 2006 and are either subject to scheduled fixed increases or adjustments based on the Consumer Price Index. Generally, the leases grant tenants renewal options. Leases also provide for additional rents based on certain operating expenses as well as sales volume of certain retail space within the office buildings. Future minimum rent to be received under operating leases, excluding tenant reimbursements of certain costs, are as follows as of:

                                                              DECEMBER 31,
YEAR ENDING                                                      1995
-----------                                                   ------------
                                                             (IN THOUSANDS)
 1996.......................................................    $ 33,359
 1997.......................................................      33,013
 1998.......................................................      30,750
 1999.......................................................      26,999
 2000.......................................................      23,297
 Thereafter.................................................      67,612
                                                                --------
   Total....................................................    $215,030
                                                                ========

Rental revenue from one tenant, Hughes Electronic Corporation's Space & Communications Company ("Hughes"), was $8,161,142, $10,817,000, $11,395,000 and $12,258,000 for the nine months ended September 30, 1996 and the years ended December 31, 1995, 1994 and 1993, respectively. Future minimum rents from this tenant are $66,949,000 at December 31, 1995.

On September 18, 1996, KG and Hughes amended the terms of certain of their lease agreements. Such amendments included the extension of one lease through October 31, 2001 and a $500,000 allowance for tenant improvements. In addition, KG agreed to pay Hughes $3,150,000 in consideration for the cancellation of an option to purchase a 50% equity interest in Kilroy Airport Center at El Segundo which has been reflected in the statement of operations for the nine months ended September 30, 1996. In November 1996, $2,260,000 of the total liability of $3,650,000 was paid by KI and its stockholders. The remaining balance is payable in monthly installments of $100,000 commencing in January 1997.

The majority of Kilroy Properties are located in Southern California. The ability of the tenants to honor the terms of their respective leases is dependent upon the economic, regulatory and social factors affecting the communities and industries in which the tenants operate.

F-22

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

6. COMMITMENTS AND CONTINGENCIES

Operating Leases--KG has noncancelable ground lease obligations on Kilroy Airport Center--Long Beach with an initial lease period expiring on July 31, 2035, classified as an operating lease. Further, KG has noncancelable ground lease obligations on the SeaTac Office Center expiring on December 31, 2032 with an option to extend the leases for an additional 30 years. Rentals are subject to adjustment every five years based on the variation of the Consumer Price Index. The minimum commitment under these leases at December 31, 1995 is as follows:

YEAR ENDING
-----------                                                  (IN THOUSANDS)
 1996.......................................................    $   743
 1997.......................................................        743
 1998.......................................................        761
 1999.......................................................        923
 2000.......................................................      1,056
 Thereafter.................................................     35,737
                                                                -------
   Total....................................................    $39,963
                                                                =======

Litigation--KG is subject to various legal proceedings and claims that arise in the ordinary course of business. These matters are generally covered by insurance. While the resolution of these matters cannot be predicted with certainty, management believes that the final outcome of such matters will not have a material adverse effect on the financial position or results of operations of KG.

7. RELATED-PARTY TRANSACTIONS

KI provides management, legal, accounting and general administrative services pursuant to agreements that provide for management fees based upon a percentage of gross revenues from the Kilroy Properties and reimbursement of other costs incurred by KI in connection with providing the aforementioned services. Kilroy Company ("KC"), an affiliated entity, provides marketing and leasing services. Charges by KC include leasing commissions paid to employees and outside leasing brokers as well as fees to cover its general administrative costs. Management fees are expensed as incurred and are included in property expenses. Leasing fees are capitalized and amortized over the life of the related leases. In the opinion of KG management, the fees paid to KI and KC for management and leasing services are comparable to the rates which KG would have paid an independent company to provide similar services. In addition, KI is a tenant at the Kilroy Airport Center--LAX, Kilroy Airport Center--Long Beach and SeaTac Office Center, under month-to-month leases. Charges for services provided by KI and KC and rental income from KI are summarized as follows:

                                                NINE MONTHS
                                                   ENDED
                                                 SEPTEMBER  YEAR ENDED DECEMBER
                                                    30,             31,
                                                ----------- --------------------
                                                 1996  1995  1995   1994   1993
                                                ------ ---- ------ ------ ------
                                                         (IN THOUSANDS)
Management fees................................ $  916 $754 $1,343 $1,026 $1,359
Leasing fees................................... $1,372 $743 $  804 $1,456 $  431
Rental income.................................. $  396 $396 $  528 $  528 $  797

Management fees in 1995 include a fourth quarter charge of $321,000 relating to management time incurred for the renegotiation of loans.

F-23

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

8. FAIR VALUE DISCLOSURES OF FINANCIAL INSTRUMENTS

The following disclosure of estimated fair value was determined by KG using available market information and appropriate valuation methodologies. However, considerable judgment is necessary to interpret market data and develop the related estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts that could be realized upon disposition of the financial instruments. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

Receivables, accounts payable and other liabilities are carried at amounts that reasonably approximate their fair value.

The fixed rate mortgage notes payable totaling $146,352,000, $162,510,000 and $165,325,000 as of September 30, 1996, December 31, 1995 and 1994 have fair values of $149,600,000, $165,300,000 and $169,900,000, respectively (excluding prepayment penalties), as estimated based upon interest rates available for the issuance of debt with similar terms and remaining maturities. These notes were subject to prepayment penalties of $542,000, $722,000 and $757,000 at September 30, 1996, December 31, 1995 and 1994, respectively, that would be required to retire these notes prior to maturity. The carrying values of floating rate mortgages totaling $77,694,000, $71,347,000 and $84,734,000 at September 30, 1996, December 31, 1995 and 1994, respectively, reasonably approximate their fair values.

The fair value estimates presented herein are based on information available to KG management as of September 30, 1996, December 31, 1995 and 1994. Although KG management is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since that date, and current estimates of fair value may differ significantly from the amounts presented herein.

F-24

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

9. SCHEDULE OF RENTAL PROPERTY

                                                               DECEMBER 31, 1995
                     ------------------------------------------------------------------------------------------------------
                                                                             GROSS AMOUNTS
                                                                     AT WHICH CARRIED AT CLOSE OF
                                      INITIAL COST         COSTS                PERIOD
                                  --------------------  CAPITALIZED  -----------------------------
                                           BUILDINGS   SUBSEQUENT TO                                              DATE OF
                                              AND      ACQUISITION/          BUILDING AND          ACCUMULATED  ACQUIS. (A)
      PROPERTY       ENCUMBRANCES  LAND   IMPROVEMENTS  IMPROVEMENT   LAND   IMPROVEMENTS  TOTAL   DEPRECIATION CONSTR. (C)
      --------       ------------ ------- ------------ ------------- ------- ------------ -------- ------------ -----------
                                                                 (IN THOUSANDS)
Kilroy Airport
 Center
 El Segundo, CA.....    $97,283   $ 6,141    $69,195      $18,884    $ 6,141    $88,079    $94,220    $42,495     1983(C)
Kilroy Airport
 Center
 Long Beach, CA.....     54,811       --      47,387       11,041        --      58,428     58,428     15,322     1989(C)
185/181 S. Douglas
 Street
 El Segundo,
 California(1)......     15,639       525      4,687        1,845        628      6,429      7,057      3,509     1978(C)
SeaTac Office
 Center.............     26,999       --      25,993        8,109        --      33,239     33,239     22,523     1977(C)
2270 E. El Segundo
 Boulevard
 El Segundo,
 California(1)......        --        361        100           76        419        118        537         73     1977(C)
2260 E. El Segundo
 Boulevard,
 El Segundo,
 California(1)......        --      1,423      4,194        1,236      1,703      5,150      6,853      2,914     1979(C)
2031 E. Mariposa
 Avenue,
 El Segundo,
 California.........     12,000       132        867        2,668        132      3,535      3,667      2,328     1954(C)
3332 E. La Palma
 Avenue,
 Anaheim,
 California.........      7,683        67      1,521        2,851         67      4,372      4,439      3,028     1966(C)
2265 E. El Segundo
 Boulevard,
 El Segundo,
 California.........      4,600     1,352      2,028          644      1,570      2,454      4,024      1,550     1978(C)
5115 N. 27th
 Avenue,
 Phoenix, Arizona...      3,000       125      1,206          (27)       126      1,178      1,304      1,168     1962(C)
1000 E. Ball Road,
 Anaheim,
 California(2)......      5,846       838      1,984          719        838      2,703      3,541      1,563     1979(A)(3)
                                                                                                                  1956(C)
1230 S. Lewis
 Street,
 Anaheim,
 California(2)......        --        395      1,489        1,994        395      3,483      3,878      2,444     1982(C)
12681/12691 Pala
 Drive,
 Garden Grove,
 California.........      5,996       471      2,115        1,210        471      3,325      3,796      2,857     1980(A)
                                                                                                                  1970(C)
                       --------   -------   --------      -------    -------   --------   --------   --------
   Total...........    $233,857   $11,830   $162,766      $51,250    $12,490   $212,493   $224,983   $101,774
                       ========   =======   ========      =======    =======   ========   ========   ========


(1) Two notes payable of $8,639,000 and $7,000,000 are secured by the buildings located at 2260 and 2270 E. El Segundo Boulevard, El Segundo, California, and the buildings located at 185/181 S. Douglas Street, El Segundo, California.
(2) A note payable of $5,846,000 is secured by the buildings located at 1000 East Ball Road, Anaheim, California and 1230 South Lewis Street, Anaheim, California.
(3) The Property located at 1000 E. Ball Road, Anaheim, California, was developed for a third party by the Company in 1956, and acquired by the Company in 1979.

F-25

KILROY GROUP

NOTES TO COMBINED FINANCIAL STATEMENTS--(CONTINUED)

The aggregate gross cost of property included above, for federal income tax purposes, approximated $200,782,000 as of December 31, 1995.

The following table reconciles the historical cost of the Kilroy Properties from January 1, 1993 to December 31, 1995:

                                                  YEAR ENDED DECEMBER 31,
                                                 --------------------------
                                                   1995     1994     1993
                                                 -------- -------- --------
                                                       (IN THOUSANDS)
Balance, beginning of period.................... $223,821 $222,056 $235,549
  Additions during period--Acquisition,
   improvements, etc............................    1,162    1,765      633
  Deductions during period--Write-off of tenant
   improvements.................................      --       --   (14,126)
                                                 -------- -------- --------
Balance, close of period........................ $224,983 $223,821 $222,056
                                                 ======== ======== ========

The following table reconciles the accumulated depreciation from January 1, 1993 to December 31, 1995:

                                                   YEAR ENDED DECEMBER 31,
                                                  -------------------------
                                                    1995    1994     1993
                                                  -------- ------- --------
                                                       (IN THOUSANDS)
Balance, beginning of period..................... $ 93,475 $84,759 $ 86,442
  Additions during period--Depreciation and
   amortization for the year.....................    8,299   8,716    9,782
  Deductions during period--Accumulated
   depreciation of written-off tenant
   improvements..................................      --      --   (11,465)
                                                  -------- ------- --------
Balance, close of period......................... $101,774 $93,475 $ 84,759
                                                  ======== ======= ========

F-26

INDEPENDENT AUDITORS' REPORT

To the Partners of Kilroy Group:

We have audited the accompanying combined historical summaries of certain revenues and certain expenses (defined as operating revenues less direct operating expenses) of the Acquisition Properties for the nine months ended September 30, 1996 and the year ended December 31, 1995. These financial statements are the responsibility of the Acquisition Properties' management. Our responsibility is to express an opinion on these combined financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing standards. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the combined historical summary of certain revenues and certain expenses is free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the combined historical summary of certain revenues and certain expenses. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the combined historical summary of certain revenues and certain expenses. We believe our audits provide a reasonable basis for our opinion.

The accompanying combined historical summaries of certain revenues and certain expenses were prepared for the purpose of complying with the rules and regulations of the Securities and Exchange Commission for inclusion in the Form S-11 Registration Statement of Kilroy Realty Corporation. Material amounts, described in Note 1 to the historical summaries of certain revenues and certain expenses, that would not be comparable to those resulting from the proposed future operation of the Acquisition Properties are excluded, and the summaries are not intended to be a complete presentation of the revenues and expenses of these properties.

In our opinion, such historical summaries of certain revenues and certain expenses present fairly, in all material respects, the combined certain revenues and certain expenses, as defined in Note 1, of the Acquisition Properties for the nine months ended September 30, 1996 and the year ended December 31, 1995 in conformity with generally accepted accounting principles.

DELOITTE & TOUCHE LLP

Los Angeles, California
December 20, 1996

F-27

ACQUISITION PROPERTIES

COMBINED HISTORICAL SUMMARIES OF CERTAIN REVENUES AND CERTAIN EXPENSES

NINE MONTHS ENDED SEPTEMBER 30, 1996 AND
YEAR ENDED DECEMBER 31, 1995
(IN THOUSANDS)

                                                      NINE MONTHS
                                                         ENDED      YEAR ENDED
                                                     SEPTEMBER 30, DECEMBER 31,
                                                         1996          1995
                                                     ------------- ------------
CERTAIN REVENUES:
  Rental income.....................................    $5,875        $7,355
  Tenant reimbursements.............................       743           884
  Other income......................................       299           407
                                                        ------        ------
    Total certain revenues..........................     6,917         8,646
                                                        ------        ------
CERTAIN EXPENSES:
  Property expenses (Note 3)........................     1,315         1,882
  Real estate taxes.................................       417           495
  Ground rent (Note 4)..............................       253           338
  General and administrative........................       200           303
                                                        ------        ------
    Total certain expenses..........................     2,185         3,018
                                                        ------        ------
CERTAIN REVENUES IN EXCESS OF CERTAIN EXPENSES......    $4,732        $5,628
                                                        ======        ======

See notes to combined statements of certain revenues and certain expenses.

F-28

ACQUISITION PROPERTIES

NOTES TO COMBINED HISTORICAL SUMMARIES OF CERTAIN REVENUES AND CERTAIN
EXPENSES

1. BASIS OF PRESENTATION

The combined historical summaries of certain revenues and certain expenses relate to the operations of four properties, Westlake Plaza Centre (located in Thousand Oaks), Long Beach Phase I, La Palma Business Center (located in Anaheim) and the Monarch Building (located in Garden Grove) (collectively, the "Acquisition Properties"), which are expected to be acquired by Kilroy Realty Corporation (the "Company") from four unaffiliated third parties.

Operating revenues and operating expenses are presented on the accrual basis of accounting. The accompanying statements of certain revenues and certain expenses are not representative of the actual operations for the period presented, as certain revenues and certain expenses that may not be comparable to the revenues and expenses expected to be incurred by the Company in the proposed future operation of the Acquisition Properties have been excluded. Revenues excluded consist of termination fees and interest income. Expenses excluded consist of interest, depreciation, professional fees and other costs not directly related to the future operations of the Acquisition Properties.

Financial statements for the three years ended December 31, 1995, as required by Rule 3-14(a)(1), have not been provided because:

(i) the properties were not acquired from a related party;

(ii) material factors such as rental markets and occupancy rates have been disclosed in the Prospectus under the caption "Prospectus Summary--The Office and Industrial Properties" and "Business and Properties--General"; and

(iii) management is not aware of any material factors relating to the properties that would cause the summaries of certain revenues and certain expenses for the nine months ended September 30, 1996 and the year ended December 31, 1995 not to be indicative of future operating results.

2. OPERATING LEASES

Rental income is recognized on the accrual method as earned, which approximates recognition on a straight line basis.

The Acquisition Properties are leased to tenants under operating leases with expiration dates extending to the year 2009. Future minimum rents under the Acquisition Property's office leases, excluding tenant reimbursements are as follows as of September 30, 1996:

YEAR ENDING
DECEMBER 31,
------------                                                 (IN THOUSANDS)
 1996 (three months).......................................     $ 1,988
 1997......................................................       8,244
 1998......................................................       8,119
 1999......................................................       7,270
 2000......................................................       6,413
 Thereafter................................................      25,768
                                                                -------
   Total...................................................     $57,802
                                                                =======

F-29

ACQUISITION PROPERTIES

NOTES TO COMBINED HISTORICAL SUMMARIES OF CERTAIN REVENUES AND CERTAIN
EXPENSES--(CONTINUED)

3. RELATED-PARTY TRANSACTIONS

Property expenses include $137,000 and $181,000 of management fees for the nine months ended September 30, 1996 and for the year ended December 31, 1995, respectively, related to Long Beach Phase I, which was paid to an affiliate of the Company.

4. COMMITMENTS

Long Beach Phase I is located on land that is under a noncancelable ground lease which expires in 2035 and is classified as an operating lease. Minimum annual lease payments are as follows as of September 30, 1996:

YEAR ENDING
DECEMBER 31,
------------                                                 (IN THOUSANDS)
 1996 (three months).......................................     $    85
 1997......................................................         338
 1998......................................................         338
 1999......................................................         338
 2000......................................................         338
 Thereafter................................................      11,661
                                                                -------
   Total...................................................     $13,098
                                                                =======

F-30



NO DEALER, SALESPERSON OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY IN- FORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS IN CONNECTION WITH THE OFFER MADE BY THIS PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR ANY OF THE UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF ANY OFFER TO BUY ANY SECURITY OTHER THAN THE SHARES OF COMMON STOCK OFFERED BY THIS PROSPECTUS, NOR DOES IT CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF ANY OFFER TO BUY THE SHARES OF COMMON STOCK BY ANYONE IN ANY JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION IS NOT AUTHORIZED, OR IN WHICH THE PERSON MAKING SUCH OFFER OR SOLICITATION IS NOT QUALIFIED TO DO SO, OR TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT ANY INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE HEREOF.

UNTIL , 1997 (25 DAYS AFTER COMMENCEMENT OF THIS OFFERING), ALL DEALERS EFFECTING TRANSACTIONS IN THE REGISTERED SECURITIES, WHETHER OR NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS. THIS IS IN ADDITION TO THE OBLIGATION OF DEALERS TO DELIVER A PROSPECTUS WHEN ACTING AS UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.


TABLE OF CONTENTS

                                                                          PAGE
                                                                          ----
Prospectus Summary.......................................................   1
Risk Factors.............................................................  20
Formation and Structure of the Company...................................  36
Formation of Kilroy Services, Inc........................................  44
The Company..............................................................  45
Use of Proceeds..........................................................  51
Distribution Policy......................................................  53
Capitalization...........................................................  58
Dilution.................................................................  59
Selected Financial Data..................................................  60
Management's Discussion and Analysis of Financial Condition and Results
  of Operations..........................................................  62
Business and Properties..................................................  68
Policies with Respect to Certain Activities.............................. 111
The Financing............................................................ 116
Management............................................................... 118
Certain Relationships and Related Transactions........................... 128
Principal Stockholders................................................... 129
Description of Capital Stock............................................. 130
Certain Provisions of Maryland Law and of the Company's Articles of
  Incorporation and Bylaws............................................... 134
Partnership Agreement of the Operating Partnership....................... 139
Shares Available for Future Sale......................................... 143
Federal Income Tax Consequences.......................................... 145
Other Tax Consequences................................................... 158
ERISA Considerations..................................................... 158
Underwriting............................................................. 160
Legal Matters............................................................ 161
Experts.................................................................. 161
Additional Information................................................... 162
Glossary................................................................. 163
Index to Financial Statements............................................ F-1





11,300,000 Shares

[LOGO OF KILROY REALTY CORPORATION]

KILROY REALTY CORPORATION

Common Stock


PROSPECTUS


PRUDENTIAL SECURITIES INCORPORATED

DONALDSON, LUFKIN & JENRETTE
SECURITIES CORPORATION

J.P. MORGAN & CO.

SMITH BARNEY INC.

, 1997




DESCRIPTION OF GRAPHICS AND PHOTOS FOR EDGAR TRANSMISSION

Inside Front Cover: Map of Southern California, indicating the Company's office and industrial properties by location.

Fold-out Inside Front Cover: Ten photos of Office Properties: Clockwise, in order: 1. Two photos of SeaTac Office Center in Seattle, Washington -- pedestrian view of the office's exterior at night and aerial view of the Office Property and parking lot during the day; 2. Four photos of Kilroy Airport Center Long Beach in Long Beach, California -- pedestrian views of the office's main entrance at night and during the day and interior view of the office's reception area; 3. 2829 Townsgate Road in Thousand Oaks, California -- view from across the parking lot of the office building; 4. Three photos of Kilroy Airport Center in El Segundo, California -- the office's main entrance from two different pedestrian views, and two office buildings on the northwest corner of the property from across the street.

Inside Back Cover: Five photos of Industrial Properties: Top to bottom, in order: 1. Photo of 3340 East La Palma in Anaheim, California; 2. 1230 South Lewis Street in Anaheim, California; 3. 2031 East Mariposa Avenue in El Segundo, California; 4. 2265 East El Segundo Boulevard in El Segundo, California; 5. 2260 East El Segundo Boulevard in El Segundo, California.


PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 30. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

The following table sets forth the fees and expenses in connection with the issuance and distribution of the securities being registered hereunder. Except for the SEC registration fee, all amounts are estimates.

SEC Registration Fee........................................... $   64,539
NYSE Filing Fee................................................    126,600
Printing and Engraving Expenses................................    800,000
Legal Fees and Expenses........................................  1,600,000
Accounting Fees and Expenses...................................  1,350,000
Registrar and Transfer Agent Fees and Expenses.................      2,500
Blue Sky Fees and Expenses.....................................     20,000
National Association of Securities Dealers, Inc. ..............     26,375
Miscellaneous Expenses.........................................      9,986
                                                                ----------
  Total........................................................ $4,000,000
                                                                ==========

All of the costs identified above will be paid by the Company.

ITEM 31. SALES TO SPECIAL PARTIES.

See Item 32.

ITEM 32. RECENT SALES OF UNREGISTERED SECURITIES.

In connection with the Formation Transactions, immediately prior to or simultaneous with the consummation of the Offering an aggregate of 2,692,374 Units will be issued to Kilroy Industries, Kilroy Technologies Company, LLC, a California limited liability company, John B. Kilroy, Sr., John B. Kilroy, Jr., Ms. Patrice Bouzaid, Ms. Susan Hahn, Ms. Anne McCahon and Ms. Dana Pantuso, the daughters of John B. Kilroy, Sr., and Marshall L. McDaniel, a long-time employee of Kilroy Industries, each of which will be transferring interests in the Properties and certain other assets to the Company in consideration of the transfer of such Properties and assets. The book value to the Continuing Investors of the assets to be contributed to the Operating Partnership is a negative $113.2 million and the value of the Units representing limited partnership interests in the Operating Partnership to be received by the Continuing Investors is $53.8 million, assuming a Unit value equal to the assumed initial public offering price of $20.00 per share. No independent valuations or appraisals of the Properties were obtained in connection with the Formation Transactions. All of such persons irrevocably committed to the exchange of Units for the contribution of their respective interests in the Properties on November 3, 1996, prior to the filing of the Registration Statement, and are "accredited investors" as defined under Regulation D. The issuance of such Units will be effected in reliance upon an exemption from registration under Section 4(2) of the Securities Act as a transaction by an issuer not involving a public offering. See "The Formation and Structure of the Company."

In September 1996, 50 shares of Common Stock were issued to John B. Kilroy, Sr. for an aggregate purchase price of $1,000. The issuance of such shares was effected in reliance upon an exemption from registration under Section 4(2) of the Securities Act as a transaction by an issuer not involving a public offering. In addition, upon consummation of the Offering, 60,000 restricted shares of Common Stock will be issued to Mr. Richard E. Moran Jr. against the payment of $600 in cash therefor pursuant to the terms of his employment agreement. The issuance of such shares will be effected in reliance upon an exemption from registration under Section 4(2) of the Securities Act as a transaction by an issuer not involving a public offering.

II-1


ITEM 33. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

Section 2-418 of the MGCL permits a corporation to indemnify its directors and officers and certain other parties against judgments, penalties, fines, settlements, and reasonable expenses actually incurred by them in connection with any proceeding to which they may be made a party by reason of their service in those or other capacities unless it is established that (i) the act or omission of the director or officer was material to the matter giving rise to the proceeding and (a) was committed in bad faith or (b) was the result of active and deliberate dishonesty; (ii) the director or officer actually received an improper personal benefit in money, property or services; or (iii) in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful. Indemnification may be made against judgments, penalties, fines, settlements and reasonable expenses actually incurred by the director or officer in connection with the proceeding; provided, however, that if the proceeding is one by or in the right of the corporation, indemnification may not be made with respect to any proceeding in which the director or officer has been adjudged to be liable to the corporation. In addition, a director or officer may not be indemnified with respect to any proceeding charging improper personal benefit to the director or officer, whether or not involving action in the director's or officer's official capacity, in which the director or officer was adjudged to be liable on the basis that personal benefit was received. The termination of any proceeding by conviction, or upon a plea of nolo contendere or its equivalent, or an entry of any order of probation prior to judgment, creates a rebuttable presumption that the director or officer did not meet the requisite standard of conduct required for indemnification to be permitted.

In addition, Section 2-418 of the MGCL requires that, unless prohibited by its charter, a corporation indemnify any director or officer who is made a party to any proceeding by reason of service in that capacity against reasonable expenses incurred by the director or officer in connection with the proceeding, in the event that the director or officer is successful, on the merits or otherwise, in the defense of the proceeding.

The Company's Charter and Bylaws provide in effect for the indemnification by the Company of the directors and officers of the Company to the fullest extent permitted by applicable law. The Company is currently in the process of purchasing directors' and officers' liability insurance for the benefit of its directors and officers and expects such insurance to be in effect prior to consummation of the Offering.

ITEM 34. TREATMENT OF PROCEEDS FROM STOCK BEING REGISTERED.

Not applicable.

II-2


ITEM 35. FINANCIAL STATEMENTS AND FINANCIAL STATEMENT SCHEDULES AND EXHIBITS.

(a)(1) FINANCIAL STATEMENTS

Kilroy Realty Corporation
Pro Forma (Unaudited):
Pro Forma Condensed Consolidated Balance Sheet as of September 30, 1996 Notes to Pro Forma Condensed Consolidated Balance Sheet Pro Forma Condensed Consolidated Statements of Operations for the nine months ended September 30, 1996 and the Year Ended December 31, 1995 Notes to Pro Forma Condensed Consolidated Statements of Operations Historical:
Independent Auditors' Report
Balance Sheet as of September 30, 1996 Notes to Balance Sheet
Kilroy Group (Predecessor Affiliates)
Independent Auditors' Report
Combined Balance Sheets as of September 30, 1996, and December 31, 1995 and 1994
Combined Statements of Operations for the nine months ended September 30, 1996 and 1995 and the three years ended December 31, 1995 Combined Statements of Partners' Deficit for the nine months ended September 30, 1996 and for the three years ended December 31, 1995 Combined Statements of Cash Flows for the nine months ended September 30, 1996 and 1995 and the three years ended December 31, 1995 Notes to Combined Financial Statements Acquisition Properties
Independent Auditors' Report
Combined Historical Summaries of Certain Revenues and Certain Expenses for the nine months ended September 30, 1996 and for the year ended December 31, 1995
Notes to Combined Historical Summaries of Certain Revenues and Certain Expenses

(a)(2) FINANCIAL STATEMENT SCHEDULE

Schedule II--Valuation and qualifying accounts for the three years ended December 31, 1995

(b) EXHIBITS

EXHIBIT
  NO.                                 DESCRIPTION
-------                               -----------
   *1.1 Form of Underwriting Agreement.
 ***3.1 Articles of Amendment and Restatement of the Registrant.
 ***3.2 Amended and Restated Bylaws of the Registrant.
 ***3.3 Form of Certificate for Common Stock of the Registrant.
 ***5.1 Opinion of Ballard Spahr Andrews & Ingersoll regarding the validity of
        the Common Stock being registered.
 ***8.1 Opinion of Latham & Watkins regarding certain federal income tax
        matters.
***10.1 Amended and Restated Agreement of Limited Partnership of Kilroy
        Realty, L.P.
***10.2 Form of Registration Rights Agreement among the Registrant and the
        persons named therein.
***10.3 Omnibus Agreement dated as of October 30, 1996 by and among Kilroy
        Realty, L.P. and the parties named therein.
***10.4 Supplemental Representations, Warranties and Indemnity Agreement by
        and among Kilroy Realty, L.P. and the parties named therein.

II-3


EXHIBIT
  NO.                                 DESCRIPTION
--------                              -----------
***10.5  Pledge Agreement by and among Kilroy Realty, L.P., John B. Kilroy,
         Sr., John B. Kilroy, Jr. and Kilroy Industries.
***10.6  1997 Stock Incentive Plan of the Registrant and Kilroy Realty, L.P.
***10.7  Form of Indemnity Agreement of the Registrant and Kilroy Realty, L.P.
         with certain officers and directors.
 **10.8  Lease Agreement dated January 24, 1989 by and between Kilroy Long
         Beach Associates and the City of Long Beach for Kilroy Long Beach
         Phase I.
 **10.9  First Amendment to Lease Agreement dated December 28, 1990 by and
         between Kilroy Long Beach Associates and the City of Long Beach for
         Kilroy Long Beach Phase I.
 **10.10 Lease Agreement dated July 17, 1985 by and between Kilroy Long Beach
         Associates and the City of Long Beach for Kilroy Long Beach Phase
         III.
 **10.11 Lease Agreement dated April 21, 1988 by and between Kilroy Long Beach
         Associates and the Board of Water Commissioners of the City of Long
         Beach, acting for and on behalf of the City of Long Beach, for Long
         Beach Phase IV.
 **10.12 Lease Agreement dated December 30, 1988 by and between Kilroy Long
         Beach Associates and the City of Long Beach for Kilroy Long Beach
         Phase II.
 **10.13 First Amendment to Lease, dated January 24, 1989, by and between
         Kilroy Long Beach Associates and the City of Long Beach for Kilroy
         Long Beach Phase III.
 **10.14 Second Amendment to Lease Agreement, dated December 28, 1990, by and
         between Kilroy Long Beach Associates and the City of Long Beach for
         Kilroy Long Beach Phase III.
 **10.15 First Amendment to Lease Agreement, dated December 28, 1990, by and
         between Kilroy Long Beach Associates and the City of Long Beach for
         Kilroy Long Beach Phase II.
 **10.16 Third Amendment to Lease Agreement, dated October 10, 1994, by and
         between Kilroy Long Beach Associates and the City of Long Beach for
         Kilroy Long Beach Phase III.
 **10.17 Development Agreement by and between Kilroy Long Beach Associates and
         the City of Long Beach.
 **10.18 Amendment No. 1 to Development Agreement by and between Kilroy Long
         Beach Associates and the City of Long Beach.
 **10.19 Ground Lease by and between Frederick Boysen and Ted Boysen and
         Kilroy Industries dated May 15, 1969 for SeaTac Office Center.
 **10.20 Amendment No. 1 to Ground Lease and Grant of Easement dated April 27,
         1973 among Frederick Boysen and Dorothy Boysen, Ted Boysen and Rose
         Boysen and Sea/Tac Properties.
 **10.21 Amendment No. 2 to Ground Lease and Grant of Easement dated May 17,
         1977 among Frederick Boysen and Dorothy Boysen, Ted Boysen and Rose
         Boysen and Sea/Tac Properties.
 **10.22 Airspace Lease dated July 10, 1980 by and among the Washington State
         Department of Transportation, as lessor, and Sea Tac Properties, Ltd.
         and Kilroy Industries, as lessee.
 **10.23 Lease dated April 1, 1980 by and among Bow Lake, Inc., as lessor, and
         Kilroy Industries and SeaTac Properties, Ltd., as lessees for Sea/Tac
         Office Center.
 **10.24 Amendment No. 1 to Ground Lease dated September 17, 1990 between Bow
         Lake, Inc., as lessor, and Kilroy Industries and Sea/Tac Properties,
         Ltd., as lessee.
 **10.25 Amendment No. 2 to Ground Lease dated March 21, 1991 between Bow
         Lake, Inc., as lessor, and Kilroy Industries and Sea/Tac Properties,
         Ltd., as lessee.
  *10.26 Management Agreement by and between Kilroy Realty, L.P. and Kilroy
         Airport Imperial Co.
  *10.27 Management Agreement by and between Kilroy Realty, L.P. and Kilroy
         Calabasas Associates.
  *10.28 Option Agreement by and between Kilroy Realty, L.P. and Kilroy
         Airport Imperial Co.
  *10.29 Option Agreement by and between Kilroy Realty, L.P. and Kilroy
         Calabasas Associates.

II-4


EXHIBIT
  NO.                                 DESCRIPTION
--------                              -----------
  *10.30 Employment Agreement between the Registrant and John B. Kilroy, Jr.
  *10.31 Employment Agreement between the Registrant and Richard E. Moran Jr.
  *10.32 Employment Agreement between the Registrant and Jeffrey C. Hawken.
  *10.33 Employment Agreement between the Registrant and C. Hugh Greenup.
***10.34 Noncompetition Agreement by and between the Registrant and John B.
         Kilroy, Sr.
***10.35 Noncompetition Agreement by and between the Registrant and John B.
         Kilroy, Jr.
  *10.36 License Agreement by and among the Registrant and the other persons
         named therein.
  *21.1  List of Subsidiaries of the Registrant.
***23.1  Consent of Latham & Watkins (filed with Exhibit 8.1).
***23.2  Consent of Ballard Spahr Andrews & Ingersoll (filed with Exhibit
         5.1).
***23.3  Consent of Deloitte & Touche LLP.
***23.4  Consent of Robert Charles Lesser & Co.
***23.5  Consent of William P. Dickey.
***23.6  Consent of Matthew J. Hart.
***23.7  Consent of Dale F. Kinsella.
 **24.1  Power of Attorney.
 **24.2  Power of Attorney.
 **27.1  Financial Data Schedule


* To Be Filed By Amendment ** Previously Filed *** Filed Herewith

ITEM 36. UNDERTAKINGS.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 (the "Act") may be permitted to directors, officers, and controlling persons of the Registrant pursuant to the provisions described under Item 33 above, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission, such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer, or controlling person of the registrant in the successful defense of any action, suit, or proceeding) is asserted by such director, officer, or controlling person in connection with the securities registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

The Registrant hereby undertakes:

(1) For purposes of determining any liability under the Act, the information omitted from the form of Prospectus filed as part of the Registration Statement in reliance upon Rule 430A and contained in the form of Prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4) or 497(h) under the Act shall be deemed to be part of the Registration Statement as of the time it was declared effective.

(2) For the purpose of determining any liability under the Act, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

The Registrant hereby undertakes to provide to the Underwriters at the closing specified in the Underwriting Agreement certificates in such denominations and registered in such names as required by the Underwriters to permit prompt delivery to each purchaser.

II-5


SIGNATURES

PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE REGISTRANT HAS DULY CAUSED THIS AMENDMENT NO. 3 TO ITS REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED THEREUNTO DULY AUTHORIZED IN THE CITY OF EL SEGUNDO, STATE OF CALIFORNIA, ON THE 24TH DAY OF JANUARY, 1997.

Kilroy Realty Corporation

By: /s/ John B. Kilroy, Sr.
   ------------------------

       JOHN B. KILROY, SR.

  Chairman of the Board of Directors


Date: January 24, 1997

PURSUANT TO THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, AS AMENDED, THIS AMENDMENT NO. 3 HAS BEEN SIGNED BELOW BY THE FOLLOWING PERSONS ON BEHALF OF THE REGISTRANT AND IN THE CAPACITIES AND ON THE DATES INDICATED.

              SIGNATURE                        TITLE                 DATE
              ---------                        -----                 ----

      /s/ John B. Kilroy, Sr.          Chairman of the
- -------------------------------------   Board and Director       January 24, 1997
         JOHN B. KILROY, SR.

                                       President, Chief
               *                        Executive Officer        January 24, 1997
- -------------------------------------   and Director
         JOHN B. KILROY, JR.            (Principal
                                        Executive Officer)

                                       Chief Financial
   /s/ Richard E. Moran Jr.             Officer and              January 24, 1997
- -------------------------------------   Secretary
        RICHARD E. MORAN JR.            (Principal
                                        Financial Officer
                                        and Principal
                                        Accounting Officer)

* By /s/ John B. Kilroy, Sr.
     -----------------------
     JOHN B. KILROY, SR.
     Attorney-in-Fact

II-6


KILROY GROUP

SCHEDULE OF VALUATION AND QUALIFYING ACCOUNTS

EACH OF THE YEARS ENDED DECEMBER 31, 1995, 1994 AND 1993
(IN THOUSANDS)

                                              CHARGED TO
                                 BALANCE AT   COSTS AND                BALANCE
                                 BEGINNING   EXPENSES OR               AT END
                                 OF PERIOD  RENTAL REVENUE DEDUCTIONS OF PERIOD
                                 ---------- -------------- ---------- ---------
Year Ended December 31, 1995
  Allowance for uncollectible
   rent.........................    $837        $1,000       $ --      $1,837
                                    ====        ======       =====     ======
Year Ended December 31, 1994
  Allowance for uncollectible
   rent.........................    $514        $  909       $(586)    $  837
                                    ====        ======       =====     ======
Year Ended December 31, 1993
  Allowance for uncollectible
   rent.........................    $337        $  350       $(173)    $  514
                                    ====        ======       =====     ======

S-1

EXHIBIT INDEX

                                                                    SEQUENTIAL
EXHIBIT                                                                PAGE
  NO.                     DESCRIPTION OF EXHIBIT                       NO.
--------                  ----------------------                    ----------
   *1.1  Form of Underwriting Agreement.
 ***3.1  Articles of Amendment and Restatement of the Registrant.
 ***3.2  Amended and Restated Bylaws of the Registrant.
 ***3.3  Form of Certificate for Common Stock of the Registrant.
 ***5.1  Opinion of Ballard Spahr Andrews & Ingersoll regarding
         the validity of the Common Stock being registered.
 ***8.1  Opinion of Latham & Watkins regarding certain federal
         income tax matters.
***10.1  Amended and Restated Agreement of Limited Partnership of
         Kilroy Realty, L.P.
***10.2  Form of Registration Rights Agreement among the
         Registrant and the persons named therein.
***10.3  Omnibus Agreement dated as of October 30, 1996 by and
         among Kilroy Realty, L.P. and the parties named therein.
***10.4  Supplemental Representations, Warranties and Indemnity
         Agreement by and among Kilroy Realty, L.P. and the
         parties named therein.
***10.5  Pledge Agreement by and among Kilroy Realty, L.P., John
         B. Kilroy, Sr., John B. Kilroy, Jr. and Kilroy
         Industries.
***10.6  1997 Stock Incentive Plan of the Registrant and Kilroy
         Realty, L.P.
***10.7  Form of Indemnity Agreement of the Registrant and Kilroy
         Realty, L.P. with certain officers and directors.
 **10.8  Lease Agreement dated January 24, 1989 by and between
         Kilroy Long Beach Associates and the City of Long Beach
         for Kilroy Long Beach Phase I.
 **10.9  First Amendment to Lease Agreement dated December 28,
         1990 by and between Kilroy Long Beach Associates and the
         City of Long Beach for Kilroy Long Beach Phase I.
 **10.10 Lease Agreement dated July 17, 1985 by and between
         Kilroy Long Beach Associates and the City of Long Beach
         for Kilroy Long Beach Phase III.
 **10.11 Lease Agreement dated April 21, 1988 by and between
         Kilroy Long Beach Associates and the Board of Water
         Commissioners of the City of Long Beach, acting for and
         on behalf of the City of Long Beach, for Long Beach
         Phase IV.
 **10.12 Lease Agreement dated December 30, 1988 by and between
         Kilroy Long Beach Associates and the City of Long Beach
         for Kilroy Long Beach Phase II.
 **10.13 First Amendment to Lease, dated January 24, 1989, by and
         between Kilroy Long Beach Associates and the City of
         Long Beach for Kilroy Long Beach Phase III.
 **10.14 Second Amendment to Lease Agreement, dated December 28,
         1990, by and between Kilroy Long Beach Associates and
         the City of Long Beach for Kilroy Long Beach Phase III.
 **10.15 First Amendment to Lease Agreement, dated December 28,
         1990, by and between Kilroy Long Beach Associates and
         the City of Long Beach for Kilroy Long Beach Phase II.
 **10.16 Third Amendment to Lease Agreement, dated October 10,
         1994, by and between Kilroy Long Beach Associates and
         the City of Long Beach for Kilroy Long Beach Phase III.


                                                                    SEQUENTIAL
EXHIBIT                                                                PAGE
  NO.                     DESCRIPTION OF EXHIBIT                       NO.
--------                  ----------------------                    ----------
 **10.17 Development Agreement by and between Kilroy Long Beach
         Associates and the City of Long Beach.
 **10.18 Amendment No. 1 to Development Agreement by and between
         Kilroy Long Beach Associates and the City of Long Beach.
 **10.19 Ground Lease by and between Frederick Boysen and Ted
         Boysen and Kilroy Industries dated May 15, 1969 for
         SeaTac Office Center.
 **10.20 Amendment No. 1 to Ground Lease and Grant of Easement
         dated April 27, 1973 among Frederick Boysen and Dorothy
         Boysen, Ted Boysen and Rose Boysen and Sea/Tac
         Properties.
 **10.21 Amendment No. 2 to Ground Lease and Grant of Easement
         dated May 17, 1977 among Frederick Boysen and Dorothy
         Boysen, Ted Boysen and Rose Boysen and Sea/Tac
         Properties.
 **10.22 Airspace Lease dated July 10, 1980 by and among the
         Washington State Department of Transportation, as
         lessor, and Sea Tac Properties, Ltd. and Kilroy
         Industries, as lessee.
 **10.23 Lease dated April 1, 1980 by and among Bow Lake, Inc.,
         as lessor, and Kilroy Industries and Sea/Tac Properties,
         Ltd., as lessees for Sea/Tac Office Center.
 **10.24 Amendment No. 1 to Ground Lease dated September 17, 1990
         between Bow Lake, Inc., as lessor, and Kilroy Industries
         and Sea/Tac Properties, Ltd., as lessee.
 **10.25 Amendment No. 2 to Ground Lease dated March 21, 1991
         between Bow Lake, Inc., as lessor, and Kilroy Industries
         and Sea/Tac Properties, Ltd., as lessee.
  *10.26 Management Agreement by and between Kilroy Realty, L.P.
         and Kilroy Airport Imperial Co.
  *10.27 Management Agreement by and between Kilroy Realty, L.P.
         and Kilroy Calabasas Associates.
  *10.28 Option Agreement by and between Kilroy Realty, L.P. and
         Kilroy Airport Imperial Co.
  *10.29 Option Agreement by and between Kilroy Realty, L.P. and
         Kilroy Calabasas Associates.
  *10.30 Employment Agreement between the Registrant and John B.
         Kilroy, Jr.
  *10.31 Employment Agreement between the Registrant and Richard
         E. Moran Jr.
  *10.32 Employment Agreement between the Registrant and Jeffrey
         C. Hawken.
  *10.33 Employment Agreement between the Registrant and C. Hugh
         Greenup.
***10.34 Noncompetition Agreement by and between the Registrant
         and John B. Kilroy, Sr.
***10.35 Noncompetition Agreement by and between the Registrant
         and John B. Kilroy, Jr.
  *10.36 License Agreement by and among the Registrant and the
         other parties named therein.
  *21.1  List of Subsidiaries of the Registrant.
***23.1  Consent of Latham & Watkins (filed with Exhibit 8.1).
***23.2  Consent of Ballard Spahr Andrews & Ingersoll (filed with
         Exhibit 5.1).
***23.3  Consent of Deloitte & Touche LLP.
***23.4  Consent of Robert Charles Lesser & Co.
***23.5  Consent of William P. Dickey.
***23.6  Consent of Matthew J. Hart.


                                       SEQUENTIAL
EXHIBIT                                   PAGE
  NO.      DESCRIPTION OF EXHIBIT         NO.
-------    ----------------------      ----------
***23.7 Consent of Dale F. Kinsella.
 **24.1 Power of Attorney.
 **24.2 Power of Attorney.
 **27.1 Financial Data Schedule


* To Be Filed By Amendment ** Previously Filed

*** Filed Herewith


EXHIBIT 3.1

ARTICLES OF AMENDMENT AND RESTATEMENT
OF

KILROY REALTY CORPORATION,

A MARYLAND CORPORATION

KILROY REALTY CORPORATION, a Maryland corporation (the "Corporation"), hereby certifies to the State Department of Assessments and Taxation of Maryland (the "Department") that:

FIRST: The Corporation desires to and does hereby amend and restate its Charter, as currently in effect, consisting of Articles of Incorporation filed on September 13, 1996 with the Department (the "Articles of Incorporation"), as hereinafter provided. The provisions set forth in these Articles of Amendment and Restatement are all of the provisions of the Charter of the Corporation as currently in effect.

SECOND: The Charter of the Corporation is hereby amended by striking in their entirety Articles FIRST through EIGHTH of the Articles of Incorporation and by substituting in lieu thereof the following:

ARTICLE I
NAME OF THE CORPORATION

The name of the corporation (hereinafter the "Corporation") is:

Kilroy Realty Corporation

ARTICLE II
REGISTERED AGENT: PRINCIPAL OFFICE IN STATE

The address of the Corporation's principal office in the State of Maryland is c/o Ballard, Spahr, Andrews & Ingersoll, 300 E. Lombard Street, Baltimore, Maryland 21202. The name of the Corporation's registered agent is Charles R. Moran, Esq., whose address is c/o Ballard, Spahr, Andrews & Ingersoll, 300 E. Lombard Street, Baltimore, Maryland 21202, said resident agent being a citizen of the state of Maryland residing therein.

ARTICLE III
PURPOSE OF THE CORPORATION

The purpose for which the Corporation is formed is to engage in any lawful act or activity (including, without limitation or obligation, engaging in business as a real estate

1

investment trust (a "REIT") under Sections 856 to 860 of the Internal Revenue Code of 1986, as amended, or any successor statute of similar import (the "Code")) for which corporations may be organized under the Maryland General Corporation Law, as amended from time to time, and any successor statute hereafter enacted ("the MGCL").

ARTICLE IV
AUTHORIZED CAPITAL STOCK

The total number of shares of all classes of capital stock which the Corporation shall have authority to issue is 180,000,000, consisting of 150,000,000 shares of common stock, par value $.01 per share (the "Common Stock"), and 30,000,000 shares of preferred stock, par value $.01 per share (the "Preferred Stock") which may be issued in one or more classes as described in Paragraph C of this Article IV. The aggregate par value of all of the Corporation's authorized shares having par value is $1,800,000. The Common Stock and each class of the Preferred Stock shall each constitute a separate class of capital stock of the Corporation.

The following is a description of each of the classes of stock of the Corporation and a statement of the powers, preferences and rights of such stock, and the qualifications, limitations and restrictions thereof:

A. Voting Rights.

1. Common Stock. Except as may otherwise be required by law, and subject to the provisions of such resolution or resolutions as may be adopted by the Board of Directors pursuant to Paragraph C of this Article IV granting the holders of one or more classes of Preferred Stock exclusive voting powers with respect to any matter, each holder of Common Stock shall have one vote in respect of each share of Common Stock held on all matters voted upon by the stockholders.

2. Preferred Stock. Except as may otherwise be required by law, and subject to the provisions of such resolution or resolutions as may be adopted by the Board of Directors pursuant to Paragraph C of this Article IV granting the holders of one or more classes of Preferred Stock voting powers with respect to any matter, the Preferred Stock shall have no voting rights and shall have no rights to receive notice of any meetings except as expressly provided in the resolution establishing any class thereof.

B. Terms of Common Stock. The Common Stock shall be subject to the express terms of the Preferred Stock or any classes thereof.

1. Dividend Rights. After the provisions with respect to preferential dividends on any class of Preferred Stock (fixed in accordance with the provisions of Paragraph C of this Article IV), if any, shall have been satisfied and after the Corporation shall have complied with all the requirements, if any, with respect to redemption of, or the setting aside of sums as sinking funds or redemption or purchase accounts with respect to, any class of Preferred Stock (fixed in accordance with the provisions of Paragraph C of this Article IV), and subject further to any other conditions that may be fixed in accordance with the provisions of Paragraph

2

C of this Article IV, then, and not otherwise, the holders of Common Stock shall be entitled to receive such dividends as may be authorized and declared from time to time by the Board of Directors out of funds legally available therefor. All distributions paid with respect to the Common Stock shall be paid pro rata, with no preference to any share of Common Stock as compared with other shares of Common Stock.

2. Rights Upon Liquidation. In the event of the voluntary or involuntary liquidation, dissolution or winding-up of the Corporation, after distribution in full of the preferential amounts, if any (fixed in accordance with the provisions of Paragraph C of this Article IV), to be distributed to the holders of Preferred Stock by reason thereof, the holders of Common Stock shall, subject to the additional rights, if any (fixed in accordance with the provisions of Paragraph C of this Article IV), of the holders of any outstanding shares of Preferred Stock, be entitled to receive all of the remaining assets of the Corporation, tangible and intangible, of whatever kind available for distribution to stockholders ratably in proportion to the number of shares of Common Stock held by them.

C. Issuance and Terms of Preferred Stock. The Preferred Stock may be issued, from time to time, in one or more classes, and each class shall be known and designated by such designations, as may be stated and expressed in a resolution or resolutions adopted by the Board of Directors of the Corporation and as shall have been set forth in articles supplementary made, executed, acknowledged, filed and recorded in the manner required by the MGCL in order to make the same effective. Each class shall consist of such number of shares as shall be stated and expressed in such resolution or resolutions providing for the issue of Preferred Stock of such class together with such additional number of shares as the Board of Directors by resolution or resolutions may from time to time determine to issue as a part of such class. All shares of any one class of such Preferred Stock shall be alike in every particular except that shares issued at different times may accumulate dividends from different dates. The Board of Directors shall have power and authority to state and determine in the resolution or resolutions providing for the issue of each class of Preferred Stock the number of shares of each such class authorized to be issued, the voting powers (if any) and the designations, preferences and relative, participating, optional, conversion or other rights appertaining to each such class, and the qualifications, limitations or restrictions thereof (including, but not by way of limitation, full power and authority to determine as to the Preferred Stock of each such class, the rate or rates of dividends payable thereon, the times of payment of such dividends, the prices and manner upon which the Preferred Stock may be redeemed, the amount or amounts payable thereon in the event of liquidation, dissolution or winding up of the Corporation or in the event of any merger or consolidation of or sale of assets by the Corporation, the rights (if any) to convert the Preferred Stock into, and/or to purchase, stock of any other class or series, the terms of any sinking fund or redemption or purchase account (if any) to be provided for shares of such class of Preferred Stock, restrictions on ownership and transfer to preserve tax benefits, and the voting powers (if any) of the holders of any class of Preferred Stock generally or with respect to any particular matter, which may be less than, equal to or greater than one vote per share, and which may, without limiting the generality of the foregoing, include the right, voting as a class by itself or together with the holders of any other class of Preferred Stock or all classes of Preferred Stock as a single class, to elect one or more directors of the Corporation generally or under such specific

3

circumstances and on such conditions, as shall be provided in the resolution or resolutions of the Board of Directors adopted pursuant hereto, including, without limitation, in the event there shall have been a default in the payment of dividends on or redemption of any one or more classes of Preferred Stock). The Board of Directors may from time to time decrease the number of shares of any class of Preferred Stock (but not below the number thereof then outstanding) by providing that any unissued shares previously assigned to such class shall no longer constitute part thereof and may assign such unissued shares to an existing or newly created class. The foregoing provisions of this Paragraph C with respect to the creation or issuance of classes of Preferred Stock shall be subject to any additional conditions with respect thereto which may be contained in any resolutions then in effect which shall have theretofore been adopted in accordance with the foregoing provisions of this Paragraph C with respect to any then outstanding class of Preferred Stock.

D. Authorization of Capital Stock; Issuance and Reclassification of
Shares. The Board of Directors may authorize the issuance from time to time of shares of its capital stock of any class or series whether now or hereafter authorized, or securities convertible into shares of its capital stock of any class or series, whether now or hereafter authorized, for such consideration as the Board of Directors may deem advisable, subject to such restrictions or limitations, if any, as may be set forth in the Charter of the Corporation or the Bylaws of the Corporation, or in the MGCL. In addition, the Board of Directors shall have the power, in its sole discretion without limitation, to classify or reclassify any unissued shares of capital stock of the Corporation, whether now or hereafter authorized, by setting, altering or eliminating, in any one or more respects, from time to time, before the issuance of such shares of capital stock of the Corporation, any feature of such shares including, but not limited to, the designation, par value, preferences or conversion or other rights, voting powers, qualifications and terms and conditions of redemption, limitations as to dividends and other distributions, restrictions on ownership and transfer to preserve tax benefits and any other restrictions on such shares.

E. Restrictions on Ownership and Transfer to Preserve Tax Benefits.

1. Definitions. For the purposes of Paragraph E of this Article IV, the following terms shall have the following meanings:

"Beneficial Ownership" shall mean ownership of Common Stock by a Person who is or would be treated as an owner of such Common Stock either actually or constructively through the application of
Section 544 of the Code, as modified by Section 856(h)(1)(B) of the Code. The terms "Beneficial Owner," "Beneficially Own," "Beneficially Owns" and "Beneficially Owned" shall have the correlative meanings.

"Charitable Beneficiary" shall mean one or more beneficiaries of a Trust, as determined pursuant to Subparagraph E(3)(f) of this Article IV.

"Code" shall have the meaning set forth in Article III hereof. All section references to the Code shall include any successor provisions thereof as may be adopted from time to time.

4

"Common Stock" shall have the meaning set forth in the preamble to Article IV hereof.

"Corporation" shall have the meaning set forth in the preamble to these Articles of Amendment and Restatement.

"Constructive Ownership" shall mean ownership of Common Stock by a Person who is or would be treated as an owner of such Common Stock either actually or constructively through the application of Section 318 of the Code, as modified by Section 856(d)(5) of the Code. The terms "Constructive Owner," "Constructively Own," "Constructively Owns" and "Constructively Owned" shall have the correlative meanings.

"Initial Public Offering" shall mean the sale of Common Stock pursuant to the Corporation's first effective registration statement for such Common Stock filed under the Securities Act of 1933, as amended.

"IRS" means the United States Internal Revenue Service.

"Market Price" shall mean the last reported sales price reported on the New York Stock Exchange of the Common Stock on the trading day immediately preceding the relevant date, or if the Common Stock is not then traded on the New York Stock Exchange, the last reported sales price of the Common Stock on the trading day immediately preceding the relevant date as reported on any exchange or quotation system over which the Common Stock may be traded, or if the Common Stock is not then traded over any exchange or quotation system, then the market price of the Common Stock on the relevant date as determined in good faith by the Board of Directors of the Corporation.

"Operating Partnership" shall mean Kilroy Realty, L.P., a Delaware limited partnership.

"OP Units" shall have the meaning set forth in paragraph H of Article IV hereof.

"Ownership Limit" shall mean 7.0% (by value or by number of shares, whichever is more restrictive) of the outstanding Common Stock of the Corporation.

"Partnership Agreement" shall mean the Agreement of Limited Partnership of Kilroy Realty, L.P., as such agreement may be amended from time to time.

"Person" shall mean an individual, corporation, partnership, limited liability company, estate, trust (including a trust qualified under Section 401(a) or 501(c)(17) of the Code), a portion of a trust permanently set aside for or

5

to be used exclusively for the purposes described in Section 642(c) of the Code, association, private foundation within the meaning of
Section 509(a) of the Code, joint stock company or other entity; but does not include an underwriter acting in a capacity as such in a public offering of shares of Common Stock provided that the ownership of such shares of Common Stock by such underwriter would not result in the Corporation being "closely held" within the meaning of Section 856(h) of the Code, or otherwise result in the Corporation failing to qualify as a REIT.

"Purported Beneficial Transferee" shall mean, with respect to any purported Transfer (or other event) which results in a transfer to a Trust, as provided in Subparagraph E(2)(b) of this Article IV, the purported beneficial transferee or owner for whom the Purported Record Transferee would have acquired or owned shares of Common Stock, if such Transfer had been valid under Subparagraph E(2)(a) of this Article IV.

"Purported Record Transferee" shall mean, with respect to any purported Transfer (or other event) which results in a transfer to a Trust, as provided in Subparagraph E(2)(b) of this Article IV, the record holder of the shares of Common Stock if such Transfer had been valid under Subparagraph E(2)(a) of this Article IV.

"REIT" shall mean a real estate investment trust under Sections 856 through 860 of the Code.

"Restriction Termination Date" shall mean the first day after the date of the Initial Public Offering on which (1) the Board of Directors of the Corporation determines that it is no longer in the best interests of the Corporation to attempt to, or continue to, qualify as a REIT and (2) such determination is approved by the affirmative vote of the holders of not less than two-thirds of the shares of the Corporation's capital stock outstanding and entitled to vote thereon.

"Transfer" shall mean any sale, transfer, gift, assignment, devise or other disposition of Common Stock, including (i) the granting of any option or entering into any agreement for the sale, transfer or other disposition of Common Stock or (ii) the sale, transfer, assignment or other disposition of any securities (or rights convertible into or exchangeable for Common Stock), whether voluntary or involuntary, whether such transfer has occurred of record or beneficially or Beneficially or Constructively (including but not limited to transfers of interests in other entities which results in changes in Beneficial or Constructive Ownership of Common Stock), and whether such transfer has occurred by operation of law or otherwise.

"Trust" shall mean each of the trusts provided for in Subparagraph E(3) of this Article IV.

6

"Trustee" shall mean any Person unaffiliated with the Corporation, or a Purported Beneficial Transferee, or a Purported Record Transferee, that is appointed by the Corporation to serve as trustee of a Trust.

2. Restriction on Ownership and Transfers.

(a) From the date of the Initial Public Offering and prior to the Restriction Termination Date:

(i) except as provided in Subparagraph E(9) of this Article IV, no Person shall Beneficially Own Common Stock in excess of the Ownership Limit;

(ii) except as provided in Subparagraph E(9) of this Article IV, no Person shall Constructively Own in excess of 9.8% by value or number of shares, whichever is more restrictive, of the outstanding shares of Common Stock of the Corporation; and

(iii) no Person shall Beneficially or Constructively Own Common Stock to the extent that such Beneficial or Constructive Ownership would result in the Corporation being "closely held" within the meaning of Section 856(h) of the Code, or otherwise failing to qualify as a REIT (including but not limited to ownership that would result in the Corporation owning (actually or Constructively) an interest in a tenant that is described in Section 856(d)(2)(B) of the Code if the income derived by the Corporation (either directly or indirectly through one or more partnerships) from such tenant would cause the Corporation to fail to satisfy any of the gross income requirements of
Section 856(c) of the Code).

(b) If, during the period commencing on the date of the Initial Public Offering and prior to the Restriction Termination Date, any Transfer (whether or not such Transfer is the result of a transaction entered into through the facilities of the New York Stock Exchange ("NYSE")) or other event occurs that, if effective, would result in any Person Beneficially or Constructively Owning Common Stock in violation of Subparagraph E(2)(a) of this Article IV, (i) then that number of shares of Common Stock that otherwise would cause such Person to violate Subparagraph E(2)(a) of this Article IV (rounded up to the nearest whole share) shall be automatically transferred to a Trust for the benefit of a Charitable Beneficiary, as described in Subparagraph E(3), effective as of the close of business on the business day prior to the date of such Transfer or other event, and such Purported Beneficial Transferee shall thereafter have no rights in such shares or (ii) if, for any reason, the transfer to the Trust described in clause (i) of this sentence is not automatically effective as provided therein to prevent any Person from Beneficially or Constructively Owning Common Stock in violation of Subparagraph E(2)(a) of this Article IV, then the Transfer of that number of shares of Common Stock that otherwise would cause any Person to violate Subparagraph E(2)(a) shall be void ab initio, and the Purported Beneficial Transferee shall have no rights in such shares.

(c) Subject to Section K of this Article IV and notwithstanding any other provisions contained herein, during the period commencing on the date of the Initial Public Offering and prior to the Restriction Termination Date, any Transfer of Common Stock (whether or not such Transfer is the result of a transaction entered into through the facilities of the NYSE)

7

that, if effective, would result in the capital stock of the Corporation being beneficially owned by less than 100 Persons (determined without reference to any rules of attribution) shall be void ab initio, and the intended transferee shall acquire no rights in such Common Stock.

(d) It is expressly intended that the restrictions on ownership and Transfer described in this Subparagraph E(2) of Article IV shall apply to the redemption/exchange rights provided in Section 8.6 of the Partnership Agreement. Notwithstanding any of the provisions of the Partnership Agreement to the contrary, a partner of the Operating Partnership shall not be entitled to effect an exchange of an interest in the Operating Partnership for Common Stock if the actual or beneficial or Beneficial or Constructive ownership of Common Stock would be prohibited under the provisions of this Article IV.

3. Transfers of Common Stock in Trust.

(a) Upon any purported Transfer or other event described in Subparagraph E(2)(b) of this Article IV, such Common Stock shall be deemed to have been transferred to the Trustee in his capacity as trustee of a Trust for the exclusive benefit of one or more Charitable Beneficiaries. Such transfer to the Trustee shall be deemed to be effective as of the close of business on the business day prior to the purported Transfer or other event that results in a transfer to the Trust pursuant to Subparagraph E(2)(b). The Trustee shall be appointed by the Corporation and shall be a Person unaffiliated with the Corporation, any Purported Beneficial Transferee, and any Purported Record Transferee. Each Charitable Beneficiary shall be designated by the Corporation as provided in Subparagraph E(3)(f) of this Article IV.

(b) Common Stock held by the Trustee shall be issued and outstanding Common Stock of the Corporation. The Purported Beneficial Transferee or Purported Record Transferee shall have no rights in the shares of Common Stock held by the Trustee. The Purported Beneficial Transferee or Purported Record Transferee shall not benefit economically from ownership of any shares held in trust by the Trustee, shall have no rights to dividends and shall not possess any rights to vote or other rights attributable to the shares of Common Stock held in the Trust.

(c) The Trustee shall have all voting rights and rights to dividends with respect to Common Stock held in the Trust, which rights shall be exercised for the exclusive benefit of the Charitable Beneficiary. Any dividend or distribution paid prior to the discovery by the Corporation that shares of Common Stock have been transferred to the Trustee shall be paid to the Trustee upon demand, and any dividend or distribution declared but unpaid shall be paid when due to the Trustee with respect to such Common Stock. Any dividends or distributions so paid over to the Trustee shall be held in trust for the Charitable Beneficiary. The Purported Record Transferee and Purported Beneficial Transferee shall have no voting rights with respect to the Common Stock held in the Trust and, subject to Maryland law, effective as of the date the Common Stock has been transferred to the Trustee, the Trustee shall have the authority (at the Trustee's sole discretion) (i) to rescind as void any vote cast by a Purported Record Transferee with respect to such Common Stock prior to the discovery by the Corporation that the Common

8

Stock has been transferred to the Trustee and (ii) to recast such vote in accordance with the desires of the Trustee acting for the benefit of the Charitable Beneficiary; provided, however, that if the Corporation has already taken irreversible corporate action, then the Trustee shall not have the authority to rescind and recast such vote. Notwithstanding the provisions of this Article IV, until the Corporation has received notification that the Common Stock has been transferred into a Trust, the Corporation shall be entitled to rely on its share transfer and other stockholder records for purposes of preparing lists of stockholders entitled to vote at meetings, determining the validity and authority of proxies and otherwise conducting votes of stockholders.

(d) Within 20 days of receiving notice from the Corporation that shares of Common Stock have been transferred to the Trust, the Trustee of the Trust shall sell the shares of Common Stock held in the Trust to a person, designated by the Trustee, whose ownership of the shares of Common Stock will not violate the ownership limitations set forth in Subparagraph E(2)(a). Upon such sale, the interest of the Charitable Beneficiary in the shares of Common Stock sold shall terminate and the Trustee shall distribute the net proceeds of the sale to the Purported Record Transferee and to the Charitable Beneficiary as provided in this Subparagraph E(3)(d). The Purported Record Transferee shall receive the lesser of (i) the price paid by the Purported Record Transferee for the shares of Common Stock in the transaction that resulted in such transfer to the Trust (or, if the event which resulted in the transfer to the Trust did not involve a purchase of such shares of Common Stock at Market Price, the Market Price of such shares of Common Stock on the day of the event which resulted in the transfer of such shares of Common Stock to the Trust) and (ii) the price per share received by the Trustee (net of any commissions and other expenses of sale) from the sale or other disposition of the shares of Common Stock held in the Trust. Any net sales proceeds in excess of the amount payable to the Purported Record Transferee shall be immediately paid to the Charitable Beneficiary together with any dividends or other distributions thereon. If, prior to the discovery by the Corporation that shares of such Common Stock have been transferred to the Trustee, such shares of Common Stock are sold by a Purported Record Transferee then (x) such shares of Common Stock shall be deemed to have been sold on behalf of the Trust and (y) to the extent that the Purported Record Transferee received an amount for such shares of Common Stock that exceeds the amount that such Purported Record Transferee was entitled to receive pursuant to this Subparagraph E(3)(d), such excess shall be paid to the Trustee upon demand.

(e) Common Stock transferred to the Trustee shall be deemed to have been offered for sale to the Corporation, or its designee, at a price per share equal to the lesser of (i) the price paid by the Purported Record Transferee for the shares of Common Stock in the transaction that resulted in such transfer to the Trust (or, if the event which resulted in the transfer to the Trust did not involve a purchase of such shares of Common Stock at Market Price, the Market Price of such shares of Common Stock on the day of the event which resulted in the transfer of such shares of Common Stock to the Trust) and
(ii) the Market Price on the date the Corporation, or its designee, accepts such offer. The Corporation shall have the right to accept such offer until the Trustee has sold the shares of Common Stock held in the Trust pursuant to Subparagraph E(3)(d). Upon such a sale to the Corporation, the interest of the Charitable Beneficiary in the shares of Common Stock sold shall terminate and the Trustee shall distribute the net proceeds of the sale to the Purported Record Transferee and any dividends or other

9

distributions held by the Trustee with respect to such Common Stock shall thereupon be paid to the Charitable Beneficiary.

(f) By written notice to the Trustee, the Corporation shall designate one or more nonprofit organizations to be the Charitable Beneficiary of the interest in the Trust such that (i) the shares of Common Stock held in the Trust would not violate the restrictions set forth in Subparagraph E(2)(a) in the hands of such Charitable Beneficiary and (ii) each Charitable Beneficiary is an organization described in Sections 170(b)(1)(A), 170(c)(2) or 501(c)(3) of the Code.

4. Remedies For Breach. If the Board of Directors or a committee thereof or other designees if permitted by the MGCL shall at any time determine in good faith that a Transfer or other event has taken place in violation of Subparagraph E(2) of this Article IV or that a Person intends to acquire, has attempted to acquire or may acquire beneficial ownership (determined without reference to any rules of attribution), Beneficial Ownership or Constructive Ownership of any shares of the Corporation in violation of Subparagraph E(2) of this Article IV, the Board of Directors or a committee thereof or other designees if permitted by the MGCL shall take such action as it deems advisable to refuse to give effect or to prevent such Transfer, including, but not limited to, causing the Corporation to redeem shares of Common Stock, refusing to give effect to such Transfer on the books of the Corporation or instituting proceedings to enjoin such Transfer; provided, however, that any Transfers (or, in the case of events other than a Transfer, ownership or Constructive Ownership or Beneficial Ownership) in violation of Subparagraph E(2)(a) of this Article IV, shall automatically result in the transfer to a Trust as described in Subparagraph E(2)(b) and any Transfer in violation of Subparagraph E(2)(c) shall automatically be void ab initio irrespective of any action (or non-action) by the Board of Directors.

5. Notice of Restricted Transfer. Any Person who acquires or attempts to acquire shares in violation of Subparagraph E(2) of this Article IV, or any Person who is a Purported Beneficial Transferee such that an automatic transfer to a Trust results under Subparagraph E(2)(b) of this Article IV, shall immediately give written notice to the Corporation of such event and shall provide to the Corporation such other information as the Corporation may request in order to determine the effect, if any, of such Transfer or attempted Transfer on the Corporation's status as a REIT.

6. Owners Required to Provide Information. From the date of the Initial Public Offering and prior to the Restriction Termination Date each Person who is a beneficial owner or Beneficial Owner or Constructive Owner of shares of Common Stock and each Person (including the stockholder of record) who is holding shares of Common Stock for a beneficial owner or Beneficial Owner or Constructive Owner shall, on demand, provide to the Corporation a completed questionnaire containing the information regarding their ownership of such shares, as set forth in the regulations (as in effect from time to time) of the U.S. Department of Treasury under the Code. In addition, each Person who is a beneficial owner or Beneficial Owner or Constructive Owner of shares of Common Stock and each Person (including the stockholder of record) who is holding shares of Common Stock for a beneficial owner or Beneficial Owner or

10

Constructive Owner shall, on demand, be required to disclose to the Corporation in writing such information as the Corporation may request in order to determine the effect, if any, of such stockholder's actual and constructive ownership of shares of Common Stock on the Corporation's status as a REIT and to ensure compliance with the Ownership Limit, or such other limit as provided from time to time in these Articles of Amendment and Restatement or as otherwise permitted by the Board of Directors.

7. Remedies Not Limited. Nothing contained in this Article IV (but subject to Paragraph K of this Article IV) shall limit the authority of the Board of Directors to take such other action as it deems necessary or advisable to protect the Corporation and the interests of its stockholders by preservation of the Corporation's status as a REIT.

8. Ambiguity. In the case of an ambiguity in the application of any of the provisions of this Paragraph E of this Article IV, including any definition contained in Subparagraph E(1), the Board of Directors shall have the power to determine the application of the provisions of this Paragraph E with respect to any situation based on the facts known to it (subject, however, to the provisions of Paragraph K of this Article IV). In the event Paragraph E requires an action by the Board of Directors and these Articles of Amendment and Restatement fail to provide specific guidance with respect to such action, the Board of Directors shall have the power to determine the action to be taken so long as such action is not contrary to the provisions of Paragraph E. Absent a decision to the contrary by the Board of Directors (which the Board may make in its sole and absolute discretion), if a Person would have (but for the remedies set forth in Subparagraph E(2)(b)) acquired Beneficial or Constructive Ownership of Common Stock in violation of Subparagraph E(2)(a), such remedies (as applicable) shall apply first to the shares of Common Stock which, but for such remedies, would have been actually owned by such Person, and second to shares of Common Stock which, but for such remedies, would have been Beneficially Owned or Constructively Owned (but not actually owned) by such Person, pro rata among the Persons who actually own such shares of Common Stock based upon the relative number of the shares of Common Stock held by each such Person.

9. Exceptions.

(a) Subject to Subparagraph E(2)(a)(iii), the Board of Directors, in its sole discretion, may exempt a Person from the limitation on a Person Beneficially Owning shares of Common Stock in excess of the Ownership Limit if the Board of Directors obtains such representations and undertakings from such Person as are reasonably necessary to ascertain that no individual's Beneficial Ownership of such shares of Common Stock will violate the Ownership Limit or that any such violation will not cause the Corporation to fail to qualify as a REIT under the Code, and agrees that any violation of such representations or undertaking (or other action which is contrary to the restrictions contained in Subparagraph E(2) of this Article IV) or attempted violation will result in such Common Stock being transferred to a Trust in accordance with Subparagraph E(2)(b) of this Article IV.

(b) Subject to Subparagraph E(2)(a)(iii), the Board of Directors, in its sole discretion, may exempt a Person from the limitation on a Person Constructively Owning

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Common Stock in excess of 9.8% (by value or by number of shares of Common Stock, whichever is more restrictive) of the outstanding shares of Common Stock of the Corporation, if such Person does not and represents that it will not own, actually or Constructively, an interest in a tenant of the Corporation (or a tenant of any entity owned in whole or in part by the Corporation) that would cause the Corporation to own, actually or Constructively more than a 9.8% interest (as set forth in Section 856(d)(2)(B) of the Code) in such tenant and the Corporation obtains such representations and undertakings from such Person as are reasonably necessary to ascertain this fact and agrees that any violation or attempted violation will result in such Common Stock being transferred to a Trust in accordance with Subparagraph E(2)(b) of this Article IV. Notwithstanding the foregoing, the inability of a Person to make the certification described in this Subparagraph E(9)(b) shall not prevent the Board of Directors, in its sole discretion, from exempting such Person from the limitation on a Person Constructively Owning Common Stock in excess of 9.8% of the outstanding shares of Common Stock if the Board of Directors determines that the resulting application of Section 856(d)(2)(B) of the Code would affect the characterization of less than 0.5% of the gross income (as such term is used in Section 856(c)(2) of the Code) of the Corporation in any taxable year, after taking into account the effect of this sentence with respect to all other Common Stock to which this sentence applies.

(c) Prior to granting any exception pursuant to Subparagraph E(9)(a) or (b) of this Article IV, the Board of Directors may require a ruling from the Internal Revenue Service, or an opinion of counsel, in either case in form and substance satisfactory to the Board of Directors in its sole discretion, as it may deem necessary or advisable in order to determine or ensure the Corporation's status as a REIT.

F. Preemptive Rights. No holder of shares of stock of any class shall have any preemptive or preferential right to subscribe or to purchase any additional shares of any class, or any bonds or convertible securities of any nature; provided, however, that the Board of Directors may, in authorizing the issuance of shares of stock of any class or series, confer any preemptive or preferential right that the Board of Directors may deem advisable in connection with such issuance.

G. Legends. Each certificate for Common Stock and Preferred Stock shall bear the following legends:

CLASS OF STOCK

"THE CORPORATION IS AUTHORIZED TO ISSUE CAPITAL STOCK OF MORE THAN ONE CLASS, CONSISTING OF COMMON STOCK AND ONE OR MORE CLASSES OF PREFERRED STOCK. THE BOARD OF DIRECTORS IS AUTHORIZED TO DETERMINE THE PREFERENCES, LIMITATIONS AND RELATIVE RIGHTS OF ANY CLASS OF THE PREFERRED STOCK BEFORE THE ISSUANCE OF SHARES OF SUCH CLASS OF PREFERRED STOCK. THE CORPORATION WILL FURNISH, WITHOUT CHARGE, TO ANY STOCKHOLDER MAKING A WRITTEN REQUEST THEREFOR, A COPY OF THE CORPORATION'S CHARTER AND A WRITTEN STATEMENT OF THE

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DESIGNATIONS, RELATIVE RIGHTS, PREFERENCES, CONVERSION OR OTHER RIGHTS, VOTING POWERS, RESTRICTIONS, LIMITATIONS AS TO DIVIDENDS AND OTHER DISTRIBUTIONS, QUALIFICATIONS AND TERMS AND CONDITIONS OF REDEMPTION OF THE STOCK OF EACH CLASS WHICH THE CORPORATION HAS THE AUTHORITY TO ISSUE AND, IF THE CORPORATION IS AUTHORIZED TO ISSUE ANY PREFERRED OR SPECIAL CLASS AND SERIES, (i) THE DIFFERENCES IN THE RELATIVE RIGHTS AND PREFERENCES BETWEEN THE SHARES OF EACH SERIES TO THE EXTENT SET, AND (ii) THE AUTHORITY OF THE BOARD OF DIRECTORS TO SET SUCH RIGHTS AND PREFERENCES OF SUBSEQUENT SERIES. REQUESTS FOR SUCH WRITTEN STATEMENT MAY BE DIRECTED TO THE SECRETARY OF THE CORPORATION AT ITS PRINCIPAL OFFICE."

RESTRICTION ON OWNERSHIP AND TRANSFER

"THE SHARES OF COMMON STOCK REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON BENEFICIAL AND CONSTRUCTIVE OWNERSHIP AND TRANSFER FOR THE PURPOSE OF THE CORPORATION'S MAINTENANCE OF ITS STATUS AS A REAL ESTATE INVESTMENT TRUST UNDER THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"). SUBJECT TO CERTAIN FURTHER RESTRICTIONS AND EXCEPT AS EXPRESSLY PROVIDED IN THE CORPORATION'S CHARTER, (i) NO PERSON MAY BENEFICIALLY OWN SHARES OF THE CORPORATION'S COMMON STOCK IN EXCESS OF 7.0% (BY VALUE OR BY NUMBER OF SHARES, WHICHEVER IS MORE RESTRICTIVE) OF THE OUTSTANDING COMMON STOCK OF THE CORPORATION; (ii) NO PERSON MAY CONSTRUCTIVELY OWN SHARES OF THE CORPORATION'S COMMON STOCK IN EXCESS OF 9.8% (BY VALUE OR BY NUMBER OF SHARES, WHICHEVER IS MORE RESTRICTIVE) OF THE OUTSTANDING COMMON STOCK OF THE CORPORATION; (iii) NO PERSON MAY BENEFICIALLY OR CONSTRUCTIVELY OWN SHARES OF COMMON STOCK THAT WOULD RESULT IN THE CORPORATION BEING "CLOSELY HELD" UNDER SECTION 856(h) OF THE CODE OR OTHERWISE CAUSE THE CORPORATION TO FAIL TO QUALIFY AS A REIT; AND (iv) NO PERSON MAY TRANSFER SHARES OF COMMON STOCK IF SUCH TRANSFER WOULD RESULT IN THE CAPITAL STOCK OF THE CORPORATION BEING OWNED BY FEWER THAN 100 PERSONS. ANY PERSON WHO BENEFICIALLY OR CONSTRUCTIVELY OWNS OR ATTEMPTS TO BENEFICIALLY OR CONSTRUCTIVELY OWN SHARES OF COMMON STOCK WHICH CAUSES OR WILL CAUSE A PERSON TO BENEFICIALLY OR CONSTRUCTIVELY OWN SHARES OF COMMON STOCK IN EXCESS OF THE ABOVE LIMITATIONS MUST IMMEDIATELY NOTIFY THE CORPORATION. IF ANY OF THE RESTRICTIONS ON TRANSFER OR OWNERSHIP ARE VIOLATED, THE SHARES OF COMMON STOCK REPRESENTED HEREBY WILL BE AUTOMATICALLY TRANSFERRED TO THE TRUSTEE OF A TRUST FOR THE BENEFIT OF ONE OR MORE CHARITABLE BENEFICIARIES. IN ADDITION,

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THE CORPORATION MAY REDEEM SHARES UPON THE TERMS AND CONDITIONS SPECIFIED BY THE BOARD OF DIRECTORS IN ITS SOLE DISCRETION IF THE BOARD OF DIRECTORS DETERMINES THAT OWNERSHIP OR A TRANSFER OR OTHER EVENT MAY VIOLATE THE RESTRICTIONS DESCRIBED ABOVE. FURTHERMORE, UPON THE OCCURRENCE OF CERTAIN EVENTS, ATTEMPTED TRANSFERS IN VIOLATION OF THE RESTRICTIONS DESCRIBED ABOVE MAY BE VOID AB INITIO. ALL TERMS IN THIS LEGEND THAT ARE DEFINED IN THE CHARTER OF THE CORPORATION SHALL HAVE THE MEANINGS ASCRIBED TO THEM IN THE CHARTER OF THE CORPORATION, AS THE SAME MAY BE AMENDED FROM TIME TO TIME, A COPY OF WHICH, INCLUDING THE RESTRICTIONS ON TRANSFER AND OWNERSHIP, WILL BE FURNISHED TO EACH HOLDER OF SHARES OF COMMON STOCK ON REQUEST AND WITHOUT CHARGE. REQUESTS FOR SUCH A COPY MAY BE DIRECTED TO THE SECRETARY OF THE CORPORATION AT ITS PRINCIPAL OFFICE."

H. Exchange of OP Units. So long as the Corporation remains the general partner of the Operating Partnership, the Board of Directors of the Corporation is hereby expressly vested with authority (subject to the restrictions on ownership, transfer and redemption of Common Stock set forth in this Article IV) to issue, and shall issue to the extent provided in the Partnership Agreement, Common Stock in exchange for the units into which partnership interests of the Operating Partnership are divided (the "OP Units"), and as the same may be adjusted, as provided in the Partnership Agreement.

I. Reservation of Shares. Pursuant to the obligations of the Corporation under the Partnership Agreement to issue Common Stock in exchange for OP Units, the Board of Directors is hereby required to reserve and authorize for issuance a sufficient number of authorized but unissued shares of Common Stock to permit the Corporation to issue Common Stock in exchange for OP Units that may be exchanged for or converted into Common Stock as provided in the Partnership Agreement.

J. Severability. If any provision of this Article IV or any application of any such provision is determined to be invalid by any federal or state court having jurisdiction over the issues, the validity of the remaining provisions shall not be affected and other applications of such provision shall be affected only to the extent necessary to comply with the determination of such court.

K. NYSE. Nothing in this Article IV shall preclude the settlement

of any transaction entered into through the facilities of the New York Stock Exchange. The shares of Common Stock that are the subject of such transaction shall continue to be subject to the provisions of this Article IV after such settlement.

ARTICLE V
CORPORATE EXISTENCE

A. The Corporation is to have perpetual existence.

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ARTICLE VI
CLASSIFIED BOARD

A. The business and affairs of the Corporation shall be managed by the Board of Directors. The Corporation shall have a board of two (2) directors until that number is increased or decreased in accordance with the Bylaws of the Corporation, or as contemplated by the provisions of Paragraph F of this Article VI, provided that, upon the consummation of the Initial Public Offering (as defined in Article IV hereof), the Corporation shall have a board of five (5) directors until that number is increased or decreased in accordance with the Bylaws of the Corporation. However, the number of directors shall never be less than the minimum number required by the MGCL. Upon consummation of the Initial Public Offering, at least a majority of the directors shall be Independent Directors (as defined in the next sentence). An Independent Director is a director who is not an employee, officer or affiliate of the Corporation or Kilroy Industries or a subsidiary or division thereof, or a relative of a principal executive officer, or who is not an individual member of an organization acting as an advisor, consultant or legal counsel receiving compensation on a continuing basis from the Company in addition to director's fees. The following persons shall be the directors of the Corporation until the expiration of their respective terms as set forth in Paragraph B of this Article VI:

John B. Kilroy, Sr.

John B. Kilroy, Jr.

B. Upon consummation of the Initial Public Offering, the directors of the Corporation (other than any directors who may be elected by holders of Preferred Stock as provided for pursuant to Paragraph F of this Article VI) shall be divided into three classes: Class I, Class II and Class III. The number of directors in each class shall be as nearly equal as the then-authorized number of directors constituting the Board of Directors permits. Upon consummation of the Initial Public Offering, John B. Kilroy, Jr. shall be designated as a Class III director and John B. Kilroy, Sr. shall be designated as a Class II director. Each director shall serve for a term ending on the date of the third annual meeting following the annual meeting at which such director was elected; provided, however, that each director in Class I at the time of the consummation of the Initial Public Offering shall serve for a term ending on the date of the annual meeting held in 1998, each director in Class II at the time of the consummation of the Initial Public Offering shall serve for a term ending on the date of the annual meeting held in 1999, and each director in Class III at the time of the consummation of the Initial Public Offering shall serve for a term ending on the date of the annual meeting held in 2000.

C. In the event of any increase or decrease in the authorized number of directors:

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1. Each director then serving shall nevertheless continue as a director of the class of which he is a member until the expiration of his term or his prior death, retirement, resignation or removal; and

2. Except to the extent that an increase or decrease in the authorized number of directors occurs in connection with the rights of holders of Preferred Stock to elect additional directors, the newly-created or eliminated directorships resulting from any increase or decrease shall be apportioned by the Board of Directors among the three classes so as to keep the number of directors in each class as nearly equal as possible.

D. Notwithstanding the provisions of Paragraphs B and C of this Article VI, each director (other than any director who may be elected by holders of Preferred Stock as provided for pursuant to Article IV hereof), shall serve until his successor is elected and qualified or until his earlier death, retirement, resignation or removal.

E. Except as may otherwise be provided pursuant to Article IV hereof with respect to any rights of holders of Preferred Stock to elect additional directors or any agreement relating to the right to designate nominees for election to the Board of Directors, should a vacancy in the Board of Directors occur or be created (whether arising through death, retirement or resignation), such vacancy shall be filled by the affirmative vote of a majority of the remaining directors, even though less than a quorum of the Board of Directors or, in the case of a vacancy resulting from an increase in the number of directors, by a majority of the Board of Directors. In the case of a vacancy created by the removal of a director, the vacancy shall be filled by the stockholders at the next annual meeting of the stockholders or at a special meeting of the stockholders called for such purpose, provided, however, that such vacancy may be filled by the affirmative vote of a majority of the remaining directors (subject to approval by the stockholders at the next annual meeting of the stockholders or at a special meeting of the stockholders called for such purpose). A director so elected to fill a vacancy shall serve for the remainder of the term of the class to which he was elected. If the stockholders of any class or series of Preferred Stock are entitled separately to elect one or more directors, the stockholders of that class or series shall fill a vacancy on the Board of Directors which results from the removal of a director elected by that class or series.

F. During any period when the holders of any class of Preferred Stock have the right to elect additional directors as provided for or fixed pursuant to the provisions of Article IV hereof, then upon commencement and for the duration of the period during which such right continues (i) the then otherwise total and authorized number of directors of the Corporation shall automatically be increased by that number of such additional directors, and the holders of such Preferred Stock shall be entitled to elect the additional directors so provided for or fixed pursuant to said provisions, and (ii) each such additional director shall serve until such director's successor shall have been duly elected and qualified, or until such director's right to hold such office terminates pursuant to said provisions, whichever occurs earlier, subject to his earlier death, disqualification, resignation or removal. Except as otherwise provided by the Board of Directors in the resolution or resolutions establishing such class, whenever the holders of any class of Preferred Stock having such right to elect additional directors are divested of such right

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pursuant to the provisions of such stock, the term of office of all such additional directors elected by the holders of such stock, or elected to fill any vacancies resulting from the death, resignation, disqualification or removal of such additional directors, shall forthwith terminate and the total and authorized number of directors of the Corporation shall be reduced accordingly.

ARTICLE VII
RELATED PARTY TRANSACTIONS

A. Without limiting any other procedures available by law or otherwise to the Corporation, the Board of Directors may authorize any agreement or other transaction with any person, corporation, association, company, trust, limited liability company, partnership (limited or general) or other organization, although one or more of the directors or officers of the Corporation may be a party to any such agreement or an officer, director, stockholder, member or partner (general or limited) of such other party (an "Interested Officer/Director"), and no such agreement or transaction shall be invalidated or rendered void or voidable solely by reason of the existence of any such relationship if: (i) the existence is disclosed or known to the Board of Directors, and the contract or transaction is authorized, approved or ratified by the affirmative vote of not less than a majority of the disinterested directors, even if they constitute less than a quorum of the Board of Directors;
(ii) the existence is disclosed to the stockholders entitled to vote, and the contract or transaction is authorized, approved or ratified by a majority of the votes cast by the stockholders entitled to vote, other than the votes of the shares held of record by the Interested Officers/Directors or by any corporation, association, company, trust, limited liability company, partnership (limited or general) or other organization in which any Interested Officer/Director is a director or has a material financial interest; or (iii) the contract or transaction is fair and reasonable to the Corporation. Any Interested Officer/Director, or the stock owned by them or by a corporation, association, company, trust, limited liability company, partnership (limited or general) or other organization in which an Interested Officer/Director may have an interest, may be counted in determining the presence of a quorum at a meeting of the Board of Directors or a committee of the Board of Directors or at a meeting of the stockholders, as the case may be, at which the contract or transaction is authorized, approved or ratified.

ARTICLE VIII
DIRECTOR AND OFFICER LIABILITY; INDEMNIFICATION

A. To the maximum extent that Maryland law in effect from time to time permits limitation of the liability of directors and officers, no director or officer of the Corporation shall be liable to the Corporation or its stockholders for money damages. Neither the amendment nor repeal of this Article, nor the adoption or amendment of any other provision of the Charter of the Corporation or the Bylaws of the Corporation inconsistent with this Article, shall apply to or affect in any respect the applicability of the preceding sentence with respect to any act or failure to act which occurred prior to such amendment, repeal or adoption.

B. The Corporation shall indemnify, in the manner and to the maximum extent permitted by law, any person (or the estate of any person) who is or was a party to, or is threatened to be made a party to, any threatened, pending or completed action, suit or proceeding,

17

whether or not by or in the right of the Corporation, and whether civil, criminal, administrative, investigative, or otherwise, by reason of the fact that such person is or was a director or officer of the Corporation or that such person while a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, trustee, partner, member, agent or employee of another corporation, partnership, limited liability company, association, joint venture, trust or other enterprise. To the maximum extent permitted by law, the indemnification provided herein shall include expenses (including attorneys' fees), judgments, fines and amounts paid in settlement, and any such expenses may be paid by the Corporation in advance of the final disposition of such action, suit or proceeding. Neither the amendment nor repeal of this Article, nor the adoption or amendment of any other provision of the Charter of the Corporation or the Bylaws of the Corporation inconsistent with this Article, shall apply to or affect in any respect the applicability of this Paragraph B of Article VIII with respect to any act or failure to act which occurred prior to such amendment, repeal or adoption.

The indemnification and reimbursement of expenses provided herein shall not be deemed to limit the right of the Corporation to indemnify any other person against any liability and expenses to the fullest extent permitted by law, nor shall it be deemed exclusive of any other rights to which any person seeking indemnification from the Corporation may be entitled under any agreement, the Charter of the Corporation or the Bylaws of the Corporation, a vote of stockholders or disinterested directors, or otherwise, both as to action in such person's official capacity as an officer or director and as to action in another capacity, at the request of the Corporation, while acting as an officer or director of the Corporation.

ARTICLE IX
ELECTION OF DIRECTORS

Elections of directors need not be by written ballot unless the Bylaws of the Corporation shall so provide.

ARTICLE X
CERTAIN POWERS OF THE DIRECTORS

A. Determinations by Board. The determination as to any of the following matters, made in good faith by or pursuant to the direction of the Board of Directors consistent with the Charter of the Corporation and in the absence of actual receipt of an improper benefit in money, property or services or active and deliberate dishonesty established by a court, shall be final and conclusive and shall be binding upon the Corporation and every holder of shares of its stock: the amount of the net income of the Corporation for any period and the amount of assets at any time legally available for the payment of dividends, redemption of its stock or the payment of other distributions on its stock; the amount of paid-in surplus, net assets, other surplus, annual or other net profit, net assets in excess of capital, undivided profits or excess of profits over losses on sales of assets; the amount, purpose, time of creation, increase or decrease, alteration or cancellation of any reserves or charges and the propriety thereof (whether or not any obligation or liability for which such reserves or charges shall have been created shall have been paid or discharged); the fair value, or any sale, bid or asked price to be applied in determining the fair

18

value, of any asset owned or held by the Corporation; and any matters relating to the acquisition, holding and disposition of any assets by the Corporation.

B. REIT Qualification. Subject to paragraph (K) of Article IV hereof, the Board of Directors shall use its reasonable best efforts to take such actions as are necessary or appropriate to preserve the status of the Corporation as a REIT; however, if the Board of Directors determines that it is no longer in the best interests of the Corporation to qualify or continue to be qualified as a REIT and such determination is approved by the affirmative vote of holders of at least two-thirds of the shares of the Corporation's capital stock outstanding and entitled to vote thereon, the Board of Directors may revoke or otherwise terminate the Corporation's REIT election pursuant to
Section 856(g) of the Code. The Board of Directors also may determine that compliance with any restriction or limitation on stock ownership and transfers set forth in Article IV is no longer required for REIT qualification.

C. Advisor Agreements. Subject to such approval of stockholders and other conditions, if any, as may be required by any applicable statute, rule or regulation, the Board of Directors may authorize the execution and performance by the Corporation of one or more agreements with any person, corporation, association, company, trust, partnership (limited or general) or other organization whereby, subject to the supervision and control of the Board of Directors, any such other person, corporation, association, company, trust, partnership (limited or general) or other organization shall render or make available to the Corporation managerial, investment, advisory and/or related services, office space and other services and facilities (including, if deemed advisable by the Board of Directors, the management or supervision of the investments of the Corporation) upon such terms and conditions as may be provided in such agreement or agreements (including, if deemed fair and equitable by the Board of Directors, the compensation payable thereunder by the Corporation).

D. Irrevocable Resolutions. The Board of Directors may designate any of its resolutions to be "irrevocable." Resolutions so designated may not be revoked subsequently by the Board of Directors without the approval of the issued and outstanding shares of Common Stock of the Corporation by the affirmative vote of a majority of all votes entitled to be cast in respect of such shares of Common Stock.

ARTICLE XI
REMOVAL OF DIRECTORS

Subject to the rights of one or more classes or series of Preferred Stock to elect one or more directors, any director, or the entire Board of Directors, may be removed from office at any time, but only for cause and then only by the affirmative vote of the holders of at least two thirds of the votes entitled to be cast in the election of directors.

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ARTICLE XII
AMENDMENTS

Subject to the provisions hereof, the Corporation reserves the right at any time, and from time to time, to amend, alter, repeal, or rescind any provision of its Charter, in the manner now or hereafter prescribed by law, including without limitation any amendment altering the terms or contract rights, as expressly set forth in the Charter of the Corporation, of any outstanding shares of stock; and other provisions authorized or permitted by the laws of the State of Maryland at the time in force may be added or inserted, in the manner now or hereafter prescribed by law; and all rights, preferences and privileges of whatsoever nature conferred upon stockholders, directors, or any other persons whomsoever by and pursuant to the Charter of the Corporation in its present form or as hereafter amended are granted subject to this reservation.

THIRD: These Articles of Amendment and Restatement were duly advised by the Board of Directors of the Corporation by unanimous written consent pursuant to and in accordance with Section 2-408(c) of the MGCL and were duly approved by the stockholders of the Corporation by unanimous written consent pursuant to and in accordance with Section 2-505 of the MGCL.

FOURTH: The current address of the principal office of the Corporation in the State of Maryland is c/o Ballard Spahr Andrews & Ingersoll, 300 East Lombard Street, Baltimore, Maryland 21202 and the name and address of the current resident agent of the Corporation is Charles R. Moran, Esq., c/o Ballard Spahr Andrews & Ingersoll, 300 East Lombard Street, Baltimore, Maryland 21202.

FIFTH: Immediately prior to the amendments contained in these Articles of Amendment and Restatement, the number of Directors of the Corporation was two (2) and the names of those Directors are John B. Kilroy, Sr. and John B. Kilroy, Jr.

SIXTH: Immediately following the amendments contained in these Articles of Amendment and Restatement, the number of Directors of the Corporation will be two (2) and the names of those Directors are John B. Kilroy, Sr., John B. Kilroy, Jr.; provided, however, that upon consummation of the Initial Public Offering (as defined in Article IV hereof), the number of Directors of the Corporation shall be five (5).

SEVENTH: Immediately prior to the amendments contained in these Articles of Amendment and Restatement, the Corporation had authority to issue Ten Million (10,000,000) shares of common stock, par value one cent ($0.01) per share, and the aggregate par value of all such authorized shares of stock of the Corporation having par value was One Hundred Thousand Dollars ($100,000.00).

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EIGHTH: Immediately following the amendments contained in these Articles of Amendment and Restatement, the Corporation will have authority to issue One Hundred Eighty Million (180,000,000) Shares of capital stock consisting of One Hundred Fifty Million (150,000,000) shares of common stock, par value one cent ($0.01) per share, and Thirty Million (30,000,000) shares of preferred stock, par value one cent ($0.01) per share, and the aggregate par value of all such authorized shares of stock of the Corporation having par value will be One Million Eight Hundred Thousand Dollars ($1,800,000.00).

NINTH: A description, as amended, of each class of capital stock of the Corporation, including the preferences, conversion and other rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption is set forth in Paragraph SECOND of these Articles of Amendment and Restatement in Article IV entitled "Authorized Capital Stock".

(signature page follows)

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IN WITNESS WHEREOF, Kilroy Realty Corporation has caused these Articles of Amendment and Restatement to be executed in its name and on its behalf by its President and its corporate seal to be affixed and attested to by its Secretary, on this 21st day of January, 1997 and its said President acknowledges that these Articles of Amendment and Restatement are the corporate act of the said Corporation and further certifies, under penalties of perjury, that to the best of his knowledge, information and belief, matters and facts set forth herein are true in all material respects.

ATTEST:                        KILROY REALTY CORPORATION


--------------------------     -------------------------
Richard E. Moran Jr.,          John B. Kilroy, Jr.,
Secretary                      President

S-1

EXHIBIT 3.2

AMENDED AND RESTATED

BYLAWS

OF

KILROY REALTY CORPORATION

ARTICLE I

OFFICES

Section 1. The principal executive office of Kilroy Realty Corporation, a Maryland corporation (the "Corporation"), shall be located at such place or places as the board of directors may designate.

Section 2. The Corporation may also have offices at such other places as the board of directors may from time to time determine or the business of the Corporation may require.

ARTICLE II

MEETINGS OF STOCKHOLDERS

Section 1. All meetings of the stockholders shall be held in the City of El Segundo, State of California, at such place as may be fixed from time to time by the board of directors, or at such other place as shall be designated from time to time by the board of directors and stated in the notice of the meeting.

Section 2. An annual meeting of stockholders shall be held at such date and time as may be determined from time to time by resolution adopted by the board of directors, when they shall elect by a plurality vote a board of directors, and transact such other business as may properly be brought before the meeting in accordance with these bylaws. To be properly brought before the annual meeting, business must be either (i) specified in the notice of annual meeting (or any supplement or amendment thereto) given by or at the direction of the board of directors, (ii) otherwise brought before the annual meeting by or at the direction of the board of directors, or (iii) otherwise brought before the annual meeting by a stockholder. In addition to any other


applicable requirements, for business to be properly brought before an annual meeting by a stockholder, the stockholder must have given timely notice thereof in writing to the secretary of the Corporation. To be timely, a stockholder's notice must be delivered to or mailed and received at the principal executive offices of the Corporation, not less than fifty (50) days nor more than seventy- five (75) days prior to the meeting; provided, however, that in the event that less than sixty-five (65) days' notice or prior public disclosure of the date of the annual meeting is given or made to stockholders, notice by a stockholder to be timely must be so received not later than the close of business on the fifteenth (15th) day following the day on which such notice of the date of the annual meeting was mailed or such public disclosure was made, whichever first occurs. A stockholder's notice to the secretary shall set forth (a) as to each matter the stockholder proposes to bring before the annual meeting (i) a brief description of the business desired to be brought before the annual meeting and the reasons for conducting such business at the annual meeting, (ii) the name and record address of the stockholder proposing such business, (iii) the class, series and number of shares of capital stock of the Corporation which are beneficially owned by the stockholder, and (iv) any material interest of the stockholder in such business and (b) as to the stockholder giving the notice (i) the name and record address of the stockholder and (ii) the class, series and number of shares of capital stock of the Corporation which are beneficially owned by the stockholder. Notwithstanding anything in these bylaws to the contrary, no business shall be conducted at the annual meeting except in accordance with the procedures set forth in this Article II, Section 2. The officer of the Corporation presiding at an annual meeting shall, if the facts warrant, determine that business was not properly brought before the annual meeting in accordance with the provisions of this Article II, Section 2, and if he should so determine, he shall so declare to the annual meeting and any such business not properly brought before the meeting shall not be transacted.

Section 3. A majority of the stock issued and outstanding and entitled to vote at any meeting of stockholders, the holders of which are present in person or represented by proxy, shall constitute a quorum for the transaction of business except as otherwise provided by law, by the Corporation's charter or by these bylaws. A quorum, once established, shall not be broken by the withdrawal of enough votes to leave less than a quorum and the votes present may continue to transact business until adjournment. If, however, such quorum shall not be present or represented at any meeting of the stockholders, a majority of the voting stock represented in person or by proxy may adjourn the meeting from time to time until a date not more than 120 days after the original record date, without notice other than announcement at the meeting, until a quorum shall be present or represented. At such adjourned meeting at which a quorum shall be present or represented, any business may be transacted which might have been transacted at the meeting as originally notified. If the adjournment is for more than 120 days, or if after the adjournment a new record date is fixed for the adjourned meeting, a notice of the adjourned meeting shall be given to each stockholder of record entitled to vote thereat.

Section 4. When a quorum is present at any meeting, the vote of the holders of a majority of the stock having voting power present in person or represented by proxy shall decide any question brought before such meeting, unless the question is one upon which by express provision of the Maryland General Corporation Law ("MGCL") or the rules of any securities exchange on which the Corporation's capital stock is listed or the Corporation's charter or these

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bylaws a different vote is required, in which case such express provision shall govern and control the decision of such question.

Section 5. At each meeting of the stockholders, each stockholder having the right to vote may vote in person or may authorize another person or persons to act for him by proxy appointed by an instrument in writing subscribed by such stockholder and bearing a date not more than eleven (11) months prior to said meeting, unless said instrument provides for a longer period. All proxies must be filed with the secretary of the Corporation at the beginning of each meeting in order to be counted in any vote at the meeting. Subject to the provisions of the charter of the Corporation, each stockholder shall have one vote for each share of stock having voting power registered in his name on the books of the Corporation on the record date set by the board of directors as provided in Article V, Section 6 hereof. All elections shall be by and all questions shall be decided by a plurality vote.

Section 6. Special meetings of the stockholders, for any purpose or purposes, unless otherwise proscribed by the charter, may be called at any time by the president, the chairman of the board, or by a majority of the directors, or by a committee of the board of directors which has been duly designated by the board of directors and whose powers and authority, as provided in a resolution of the board of directors or these bylaws, include the power to call such meetings. In addition, a special meeting of the stockholders of the Corporation shall be called by the secretary of the Corporation on the written request of stockholders entitled to cast at least fifty percent (50%) of all votes entitled to be cast at the meeting, except that, in the case of a special meeting called to consider any matter which is substantially the same as a matter voted on at any special meeting for the stockholders held during the preceding twelve (12) months, the secretary of the Corporation shall not be required to call any such special meeting unless requested by stockholders entitled to cast a majority of all of the votes entitled to be cast at the meeting.

Section 7. Business transacted at any special meeting of stockholders shall be limited to the purposes stated in the notice. Where the Company's notice of meeting specifies that directors are to be elected at such special meeting, nominations of persons for election to the board of directors may be made (i) pursuant to the Company's notice of meeting, (ii) by or at the direction of the board of directors or (iii) by any committee of persons appointed by the board of directors with authority therefor or by a stockholder as provided in Section 2 of Article III hereof.

Section 8. Whenever stockholders are required or permitted to take any action at a meeting, a written notice of the meeting shall be given which notice shall state the place, date and hour of the meeting, and, in the case of a special meeting, the purpose or purposes for which the meeting is called. The written notice of any meeting shall be given to each stockholder entitled to vote at such meeting not less than 10 nor more than 90 days before the date of the meeting. If mailed, notice is given when deposited in the United States mail, postage prepaid, directed to the stockholder at his address as it appears on the records of the Corporation.

Section 9. The officer who has charge of the stock ledger of the Corporation shall prepare and make, at least 10 days before every meeting of stockholders, a complete list of

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the stockholders entitled to vote at the meeting, arranged in alphabetical order, and showing the address of each stockholder and the number of shares registered in the name of each stockholder. Such list shall be open to the examination of any stockholder, for any purpose germane to the meeting, during ordinary business hours, for a period of at least 10 days prior to the meeting, either at a place within the city where the meeting is to be held, which place shall be specified in the notice of the meeting, or, if not so specified, at the principal executive office of the Corporation. The list shall also be produced and kept at the time and place of the meeting during the whole time thereof, and may be inspected by any stockholder who is present.

Section 10. Notwithstanding any other provision of the charter of the Corporation or these bylaws, Subtitle 7 of Title 3 of the MGCL (as the same may hereafter be amended from time to time) shall not apply to the voting rights of any shares of stock of the Corporation now or hereafter held by any existing or future stockholder of the Corporation (regardless of the identity of such stockholder).

ARTICLE III

DIRECTORS

Section 1. The board of directors shall consist of a minimum of three
(3) and a maximum of thirteen (13) directors, provided however, that prior to the consummation of the initial public offering of the Common Stock of the Corporation, the board of directors shall consist of a minimum of two (2) directors. The number of directors shall be fixed or changed from time to time, within the minimum and maximum, by the then elected directors, provided that, upon the consummation of the initial public offering of Common Stock of the Corporation, at least a majority of the directors shall be Independent Directors (as defined in the next sentence). An Independent Director is a director who is not an employee, officer or affiliate of the Corporation or Kilroy Industries or a subsidiary or division thereof, or a relative of a principal executive officer, and who is not an individual member of an organization acting as an advisor, consultant or legal counsel receiving compensation on a continuing basis from the Company in addition to director's fees. Upon consummation of the initial public offering of Common Stock of the Corporation, and until increased or decreased by the directors pursuant to these bylaws, the exact number of directors shall be five (5). The directors need not be stockholders. The directors shall be divided into three classes in accordance with the charter of the Corporation and, except as provided in Section 2 of this Article III with respect to vacancies, shall be elected as provided in the charter at the annual meeting of the stockholders, and each director elected shall hold office until his successor is elected and qualified or until his death, retirement, resignation or removal.

Section 2. (a) Nominations of persons for election to the board of directors of the Corporation at the annual meeting of stockholders may be made
(i) pursuant to the Corporation's notice of meeting; (ii) by or at the direction of the board of directors or (iii) by any committee of persons appointed by the board of directors with authority therefor or by any stockholder of the Corporation entitled to vote for the election of directors at the meeting who complies with the notice procedures set forth in this Article III, Section 2(a). Such nominations by any stockholder

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shall be made pursuant to timely notice in writing to the Secretary of the Corporation. To be timely, a stockholder's notice shall be delivered to or mailed and received at the principal executive offices of the Corporation not less than 50 days nor more than 75 days prior to the meeting; provided, however, that in the event that less than 65 days notice or prior public disclosure of the date of the meeting is given or made to stockholders, notice by the stockholder to be timely must be so received not later than the close of business of the fifteenth (15th) day following the day on which such notice of the date of the meeting was mailed or such public disclosure was made, whichever first occurs. Such stockholder's notice to the Secretary shall set forth (i) as to each person whom the stockholder proposes to nominate for election or re- election as a director, (a) the name, age, business address and residence address of the person, (b) the principal occupation or employment of the person,
(c) the class, series and number of shares of capital stock of the Corporation which are beneficially owned by the person, and (d) any other information relating to the person that is required to be disclosed in solicitations for proxies for election of directors pursuant to the Rules and Regulations of the Securities and Exchange Commission under Section 14 of the Securities Exchange Act of 1934, as amended; and (ii) as to the stockholder giving the notice (a) the name and record address of the stockholder and (b) the class, series and number of shares of capital stock of the Corporation which are beneficially owned by the stockholder. The Corporation may require any proposed nominee to furnish such other information as may reasonably be required by the Corporation to determine the eligibility of such proposed nominee to serve as a director of the Corporation. Except as may otherwise be provided in these bylaws or any other agreement relating to the right to designate nominees for election to the board of directors, no person shall be eligible for election as a director of the Corporation unless nominated in accordance with the procedures set forth herein. The officer of the Corporation presiding at an annual meeting shall, if the facts warrant, determine that a nomination was not made in accordance with the foregoing procedure, and if he should so determine, he shall so declare to the meeting and the defective nomination shall be disregarded.

(b) Except as may otherwise be provided pursuant to Article IV of the to elect additional directors and any other requirement in these bylaws or other of directors, should a vacancy in the board of directors occur or be created (whether arising through death, retirement or resignation), such vacancy shall be filled by the affirmative vote of a majority of the remaining directors, even though less than a quorum of the board of directors or, in the case of a vacancy resulting from an increase in the number of directors, by a majority of the board of directors. In the case of a vacancy created by the removal of a director, the vacancy shall be filled by the stockholders at the next annual meeting of the stockholders or at a special meeting of the stockholders called for such purpose, provided, however, that such vacancy may be filled by the affirmative vote of a majority of the remaining directors (subject to approval by the stockholders at the next annual meeting of the stockholders or at a special meeting of the stockholders called for such purpose). A director so elected to fill a vacancy shall serve for the remainder of the term of the class to which he was elected.

Section 3. The property and business of the Corporation shall be managed by or under the direction of its board of directors. In addition to the powers and authorities by these

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bylaws expressly conferred upon it, the board may exercise all such powers of the Corporation and do all such lawful acts and things as are not by statute or by the Corporation's charter or by these bylaws directed or required to be exercised or done by the stockholders.

MEETINGS OF THE BOARD OF DIRECTORS

Section 4. The directors may hold their meetings and have one or more offices, and keep the books of the Corporation, outside the State of Maryland.

Section 5. Regular meetings of the board of directors may be held at such time and place as shall from time to time be determined by resolution of the board, and no additional notice shall be required.

Section 6. Special meetings of the board of directors may be called by the President or the Chairman of the board of directors on forty-eight hours' notice to each director, either personally or by mail or by telegram; special meetings shall be called by the President or the Secretary in like manner and on like notice on the written request of two directors unless the board consists of only one director, in which case special meetings shall be called by the President or Secretary in like manner and on like notice on the written request of the sole director. reasonable judgment, appropriate.

Section 7. Notwithstanding any other provision of these bylaws, from and after the consummation of the initial public offering of Common Stock of the Corporation, the following actions of the board of directors shall require the approval of a majority of the Independent Committee (as defined in section 12(ii) of this Article III): (i) the selection of operators for the Corporation's or the Operating Partnership's properties; and (ii) all transactions between the Corporation or any subsidiary of the Corporation (including, without limitation, the Operating Partnership) and John B. Kilroy, Sr. or John B. Kilroy, Jr. and their respective affiliates (not including the Corporation, the Operating Partnership or any subsidiary of the Corporation or the Operating Partnership), including, but not limited to, (a) the negotiation, enforcement and renegotiation of the terms of a lease, sale or refinancing of any of the Corporation's or the Operating partnership's properties, (b) the consideration of the General Partner's right of first refusal as set forth in
Section 11.3 of the Amended and Restated Agreement of Limited Partnership of the operating partnership and (c) the enforcement of the terms of transfer of any property to the Operating Partnership.

Section 8. Unless otherwise restricted by the Corporation's charter or these bylaws, any action required or permitted to be taken at any meeting of the board of directors or of any committee thereof may be taken without a meeting, if all members of the board or committee, as the case may be, consent thereto in writing, and the writing or writings are filed with the minutes of proceedings of the board or committee.

Section 9. Unless otherwise restricted by the Corporation's charter or these bylaws, members of the board of directors, or any committee designated by the board of directors, may participate in a meeting of the board of directors, or any committee, by means of conference telephone or similar communications equipment by means of which all persons

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participating in the meeting can hear each other, and such participation in a meeting shall constitute presence in person at such meeting.

RESIGNATION FROM THE BOARD OF DIRECTORS

Section 10. A director may resign at any time upon written notice to the Corporation's board of directors, chairman of the board, president or secretary. Any such resignation shall take effect at the time specified therein or, if the time is not specified, upon receipt thereof, and the acceptance of such resignation, unless required by the terms thereof, shall not be necessary to make such resignation effective.

COMMITTEES OF DIRECTORS

Section 11. The board of directors may, by resolution passed by a majority of the whole board, designate one or more committees, each such committee to consist of not less than the minimum number of directors required for committees of the board of directors under the MGCL. The board may designate one or more directors as alternate members of any committee, who may replace any absent or disqualified member at any meeting of the committee. Any such committee, to the extent provided in the resolution of the board of directors, and to the maximum extent permitted under the MGCL, shall have and may exercise all the powers and authority of the board of directors in the management of the business and affairs of the Corporation, and may authorize the seal of the Corporation to be affixed to all papers which may require it; but no such committee shall have the power or authority in reference to amending the charter (except that a committee may, in accordance with a general formula or method specified by the board of directors, and to the extent authorized in the resolution or resolutions providing for the issuance of shares of stock adopted by the board of directors, fix the designations and any of the preferences or rights of such shares relating to dividends, redemption, dissolution, any distribution of assets of the Corporation or the conversion into, or the exchange of such shares for, shares of any other class or classes or any other series of the same or any other class or classes of stock of the Corporation or fix the number of shares of any series of stock or authorize the increase or decrease of the shares of any series), adopting an agreement of merger or consolidation, recommending to the stockholders the sale, lease or exchange of all or substantially all of the Corporation's property and assets, recommending to the stockholders a dissolution of the Corporation or a revocation of a dissolution or any other matter requiring the approval of the stockholders of the Corporation, or amending the bylaws of the Corporation; and no such committee shall have the power or authority to authorize or declare a dividend, to authorize the issuance of stock (except that, if the board of directors has given general authorization for the issuance of stock, a committee of the board, in accordance with a general formula or method specified by the board by resolution or by adoption of a stock option or other plan, may fix the terms of stock subject to classification or reclassification and the terms on which any stock may be issued, including the price and consideration for such stock) or to approve any merger or share exchange which does not require stockholder approval.

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Section 12. The Corporation shall from and after the incorporation have the following committees, the specific authority and members of which shall be as designated herein or by resolution of the board of directors:

(i) An Executive Committee, which shall have such authority as granted by the board of directors, including the power to acquire and dispose of real property and the power to authorize the execution of certain contracts and agreements.

(ii) An Independent Committee, which shall consist solely of Independent Directors and which shall have the authority to approve the actions of the board of directors as specified in Section 7 of this Article III.

(iii) An Audit Committee, which will consist solely of Independent Directors and which shall make recommendations concerning the engagement of independent public accountants, review with the independent public accountants the scope and results of the audit engagement, approve professional services provided by the independent public accountants, review the independence of the independent public accountants, consider the range of audit and non-audit fees and review the adequacy of the Corporation's internal accounting controls.

(iv) An Executive Compensation Committee, which shall consist solely of Independent Directors and which shall determine compensation for the Corporation's executive officers and administer a stock incentive plan adopted by the Corporation and any other incentive programs now or hereafter adopted by the Corporation.

Section 13. Each committee shall keep regular minutes of its meetings and report the same to the board of directors when required. The presence of a majority of the total membership of any committee shall constitute a quorum for the transaction of business at any meeting of such committee and the act of a majority of those present shall be necessary and sufficient for the taking of any action thereat.

COMPENSATION OF DIRECTORS

Section 14. Unless otherwise restricted by the charter of the Corporation or these bylaws, the board of directors shall have the authority to fix the compensation of non-employee directors. The non-employee directors may be paid their expenses, if any, of attendance at each meeting of the board of directors and may be paid a fixed sum for attendance at each meeting of the board of directors or a stated salary as director. Officers of the Corporation who are also members of the board of directors shall not be paid any director's fees.

INDEMNIFICATION

Section 15. The Corporation shall indemnify, in the manner and to the maximum extent permitted by law, any person (or the estate of any person) who is or was a party to, or is threatened to be made a party to, any threatened, pending or completed action, suit or proceeding, whether or not by or in the right of the Corporation, and whether civil, criminal, administrative,

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investigative, or otherwise, by reason of the fact that such person is or was a director or officer of the Corporation or that such person while a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, trustee, partner, member, agent or employee of another corporation, partnership, limited liability company, association, joint venture, trust or other enterprise. To the maximum extent permitted by law, the indemnification provided herein shall include expenses (including attorneys' fees), judgments, fines and amounts paid in settlement, and any such expenses may be paid by the Corporation in advance of the final disposition of such action, suit or proceeding.

Neither the amendment nor repeal of this Section 15 of this Article III, nor the adoption or amendment of any other provision of the charter or bylaws of the Corporation inconsistent with this Section, shall apply to or affect in any respect the applicability of the preceding paragraph with respect to any act or failure to act which occurred prior to such amendment, repeal or adoption.

The indemnification and reimbursement of expenses provided herein shall not be deemed to limit the right of the Corporation to indemnify any other person against any liability and expenses to the fullest extent permitted by law, nor shall it be deemed exclusive of any other rights to which any person seeking indemnification from the Corporation may be entitled under any agreement, the charter or bylaws of the Corporation, a vote of stockholders or Independent Directors, or otherwise, both as to action in such person's official capacity as an officer or director and as to action in another capacity, at the request of the Corporation, while acting as an officer or director of the Corporation.

ARTICLE IV

OFFICERS

Section 1. The officers of this Corporation shall be chosen by the board of directors and shall include a president, a vice president, a secretary and a treasurer. The Corporation may also have at the discretion of the board of directors such other officers as are desired, including a chairman of the board, additional vice presidents, a chief executive officer, a chief financial officer, a chief operating officer, one or more assistant secretaries and one or more assistant treasurers, and such other officers as may be appointed in accordance with the provisions of Section 3 of this Article IV. In the event there are two or more vice presidents, then one or more may be designated as executive vice president, senior vice president, vice president/acquisitions or other similar or dissimilar title. At the time of the election of officers, the directors may by resolution determine the order of their rank. Any number of offices may be held by the same person, unless the charter or these bylaws otherwise provide, except that one individual may not simultaneously hold the office of president and vice president.

Section 2. The board of directors, at its first meeting after each annual meeting of stockholders, shall choose the officers of the Corporation.

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Section 3. The board of directors may appoint such other officers and agents as it shall deem necessary who shall hold their offices for such terms and shall exercise such powers and perform such duties as shall be determined from time to time by the board.

Section 4. The salaries of all officers and agents of the Corporation shall be fixed by the board of directors, provided, however, that the compensation of the Corporation's executive officers shall be determined by the Corporation's Executive Compensation Committee.

Section 5. The officers of the Corporation shall hold office until their successors are chosen and qualify in their stead. Any officer elected or appointed by the board of directors may be removed at any time, with or without cause, by the affirmative vote of a majority of the board of directors. If the office of any officer or officers becomes vacant for any reason, the vacancy shall be filled by the board of directors.

Section 6. Any officer may resign at any time upon written notice to the Corporation's board of directors, chairman of the board, president or secretary. Any such resignation shall take effect at the time specified therein or, if the time is not specified, upon receipt thereof, and the acceptance of such resignation, unless required by the terms thereof, shall not be necessary to make such resignation effective. Any such resignation will not prejudice the rights, if any, of the Corporation under any contract to which the officer is a party.

CHAIRMAN OF THE BOARD

Section 7. The chairman of the board, if such an officer be elected, shall, if present, preside at all meetings of the board of directors and exercise and perform such other powers and duties as may be from time to time assigned to him by the board of directors or prescribed by the bylaws. If there is no president, the chairman of the board shall in addition be the chief executive officer of the Corporation and shall have the powers and duties prescribed in Section 8 of this Article IV.

PRESIDENT

Section 8. Subject to such supervisory powers, if any, as may be given by the board of directors to the chairman of the board, if there be such an officer, the president shall be the chief executive officer of the Corporation and shall, subject to the control of the board of directors, have general supervision, direction and control of the business and officers of the Corporation. He shall preside at all meetings of the stockholders and, in the absence of the chairman of the board, or if there be none, at all meetings of the board of directors. He shall have the general powers and duties of management usually vested in the office of president and chief executive officer of Corporations, and shall have such other powers and duties as may be prescribed by the board of directors or these bylaws.

VICE PRESIDENTS AND CHIEF OPERATING OFFICER

Section 9. In the absence or disability of the president, the vice presidents and the chief operating officer in order of their rank as fixed by the board of directors, or if not

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ranked, the vice president designated by the board of directors (or the chief operating officer if designated by the board of directors), shall perform all the duties of the president, and when so acting shall have all the powers of and be subject to all the restrictions upon the president. T he vice presidents and the chief operating officer shall have such other duties as from time to time may be prescribed for them, respectively, by the board of directors.

SECRETARY AND ASSISTANT SECRETARY

Section 10. The secretary shall attend all sessions of the board of directors and all meetings of the stockholders and record all votes and the minutes of all proceedings in a book to be kept for that purpose; and shall perform like duties for the standing committees when required by the board of directors. He shall give, or cause to be given, notice of all meetings of the stockholders and of the board of directors, and shall perform such other duties as may be prescribed by the board of directors or the bylaws. He shall keep in safe custody the seal of the Corporation, and when authorized by the board, affix the same to any instrument requiring it, and when so affixed it shall be attested by his signature or by the signature of an assistant secretary. The board of directors may give general authority to any other officer to affix the seal of the Corporation and to attest the affixing by his signature.

Section 11. The assistant secretary, or if there be more than one, the assistant secretaries in the order determined by the board of directors, or if there be no such determination, the assistant secretary designated by the board of directors, shall, in the absence or disability of the secretary, perform the duties and exercise the powers of the secretary and shall perform such other duties and have such other powers as the board of directors may from time to time prescribe.

CHIEF FINANCIAL OFFICER, TREASURER AND ASSISTANT TREASURERS

Section 12. The chief financial officer of the Corporation shall have the custody of the corporate funds and securities and shall keep full and accurate accounts of receipts and disbursements in books belonging to the Corporation and shall deposit all moneys, and other valuable effects in the name and to the credit of the Corporation, in such depositories as may be designated by the board of directors. He shall disburse the funds of the Corporation as may be ordered by the board of directors, taking proper vouchers for such disbursements, and shall render to the board of directors, at its regular meetings, or when the board of directors so requires, an account of all his transactions as chief financial officer and of the financial condition of the Corporation. If required by the board of directors, he shall give the Corporation a bond, in such sum and with such surety or sureties as shall be satisfactory to the board of directors, for the faithful performance of the duties of his office and for the restoration to the Corporation, in case of his death, resignation, retirement or removal from office, of all books, papers, vouchers, money and other property of whatever kind in his possession or under his control belonging to the Corporation. If no other person then be appointed to the position of treasurer of the Corporation, the person holding the office of chief financial officer shall also be the treasurer of the Corporation.

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Section 13. The treasurer or assistant treasurer, or if there shall be more than one, the assistant treasurers in the order determined by the board of directors, or if there be no such determination, the treasurer or assistant treasurer designated by the board of directors, shall, in the absence or disability of the chief financial officer, perform the duties and exercise the powers of the chief financial officer and shall perform such other duties and have such other powers as the board of directors may from time to time prescribe.

ARTICLE V

CERTIFICATES OF STOCK

Section 1. Every holder of stock of the Corporation shall be entitled to have a certificate signed by, or in the name of the Corporation by, the chairman of the board of directors, or the president or a vice president, and countersigned by the secretary or an assistant secretary, or the treasurer or an assistant treasurer of the Corporation, certifying the number of shares of capital stock represented by the certificate owned by such stockholder in the Corporation.

Section 2. Any or all of the signatures on the certificate may be a facsimile. In case any officer, transfer agent, or registrar who has signed or whose facsimile signature has been placed upon a certificate shall have ceased to be such officer, transfer agent or registrar before such certificate is issued, it may be issued by the Corporation with the same effect as if he were such officer, transfer agent or registrar at the date of issue.

Section 3. If the Corporation shall be authorized to issue more than one class of stock or more than one series of any class, the powers, designations, preferences and relative, participating, optional or other special rights of each class of capital stock or series thereof and the qualification, limitations or restrictions of such preferences and/or rights shall be set forth in full or summarized on the face or back of the certificate which the Corporation shall issue to represent such class or series of stock, provided that, in lieu of the foregoing requirements, there may be set forth on the face or back of the certificate which the Corporation shall issue to represent such class or series of stock, a statement that the Corporation will furnish without charge to each stockholder who so requests the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights. In addition, in the event that any stock issued by the Corporation is subject to a restriction on its transferability, the stock certificate shall on its face or back contain a full statement of the restriction or state that the Corporation will furnish information about the restriction to the stockholder on request and without charge.

LOST, STOLEN OR DESTROYED CERTIFICATES

Section 4. The board of directors may direct a new certificate or certificates to be issued in place of any certificate or certificates theretofore issued by the Corporation alleged to have been lost, stolen or destroyed, upon the making of an affidavit of that fact by the person claiming the certificate of stock to be lost, stolen or destroyed. When authorizing such issue of a

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new certificate or certificates, the board of directors may, in its discretion and as a condition precedent to the issuance thereof, require the owner of such lost, stolen or destroyed certificate or certificates, or his legal representative, to advertise the same in such manner as it shall require and/or to give the Corporation a bond in such sum as it may direct as indemnity against any claim that may be made against the Corporation with respect to the certificate alleged to have been lost, stolen or destroyed.

TRANSFERS OF STOCK

Section 5. Upon surrender to the Corporation, or the transfer agent of the Corporation, of a certificate for shares duly endorsed or accompanied by proper evidence of succession, assignment or authority to transfer, it shall be the duty of the Corporation to issue a new certificate to the person entitled thereto, cancel the old certificate and record the transaction upon its books, subject, however, to the Ownership Limit (as defined in the charter of the Corporation) and other restrictions on transferability applicable thereto from time to time.

FIXING RECORD DATE

Section 6. In order that the Corporation may determine the stockholders entitled to notice of or to vote at any meeting of the stockholders, or any adjournment thereof, or to express consent to corporate action in writing without a meeting, or entitled to receive payment of any dividend or other distribution or allotment of any rights, or entitled to exercise any rights in respect of any change, conversion or exchange of stock or for the purpose of any other lawful action, the board of directors may fix a record date which shall not be more than 90 nor less than 10 days before the date of such meeting, nor more than 90 days prior to any other action. A determination of stockholders of record entitled to notice of or to vote at a meeting of stockholders shall apply to any adjournment of the meeting; provided, however, that the board of directors may fix a new record date for the adjourned meeting. A meeting of stockholders convened on the date for which it was called may be adjourned from time to time without further notice to a date not more than 120 days after the original record date.

REGISTERED STOCKHOLDERS

Section 7. The Corporation shall be entitled to treat the holder of record of any share or shares of stock as the holder in fact thereof and accordingly shall not be bound to recognize any equitable or other claim or interest in such share on the part of any other person, whether or not it shall have express or other notice thereof, save as expressly provided by the laws of the State of Maryland.

ARTICLE VI

GENERAL PROVISIONS

DIVIDENDS

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Section 1. Dividends upon the capital stock of the Corporation, subject to the provisions of the Corporation's charter, if any, may be authorized and declared by the board of directors at any regular or special meeting, pursuant to law. Dividends may be paid in cash, in property, or in shares of the capital stock, subject to the provisions of the Corporation's charter and the MGCL.

Section 2. Before payment of any dividend there may be set aside out of any funds of the Corporation available for dividends such sum or sums as the directors from time to time, in their absolute discretion, think proper as a reserve fund to meet contingencies, or for equalizing dividends, or for repairing or maintaining any property of the Corporation, or for such other purpose as the directors shall think conducive to the interests of the Corporation, and the directors may abolish any such reserve.

CHECKS

Section 3. All checks or demands for money and notes of the Corporation shall be signed by such officer or officers as the board of directors may from time to time designate.

FISCAL YEAR

Section 4. The fiscal year of the Corporation shall be fixed by resolution of the board of directors.

SEAL

Section 5. The corporate seal shall have inscribed thereon the name of the Corporation, the year of its organization and the words "Corporate Seal, Maryland." Said seal may be used by causing it or a facsimile thereof to be impressed or affixed or reproduced or otherwise.

NOTICES

Section 6. Whenever, under the provisions of the MGCL or of the charter of the Corporation or of these bylaws, notice is required to be given to any director or stockholder, it shall not be construed to mean personal notice, but such notice may be given in writing, by mail, addressed to such director or stockholder, at his address as it appears on the records of the Corporation, with postage thereon prepaid, and such notice shall be deemed to be given at the time when the same shall be deposited in the United States mail. Notice to directors may also be given by telegram, telecopy or cable.

Section 7. Whenever any notice is required to be given under the provisions of the MGCL or of the charter of the Corporation or of these bylaws, a waiver thereof in writing, signed by the person or persons entitled to said notice, whether before or after the time stated therein, shall be deemed equivalent thereto.

ANNUAL STATEMENT

14

Section 8. The board of directors may present at each annual meeting of stockholders, and when called for by vote of the stockholders shall present to any annual or special meeting of the stockholders, a full and clear statement of the business and condition of the Corporation.

ARTICLE VII

AMENDMENTS

Section 1. These bylaws may be altered, amended or repealed or new bylaws may be adopted by the vote of a majority of the board of directors or by the affirmative vote of a majority of all votes entitled to be cast by the holders of the issued and outstanding shares of Common Stock of the Corporation. Notwithstanding anything to the contrary herein, this Section 1 of Article VII,
Section 7 of Article III and Section 10 of Article II hereof may not be altered, amended or repealed except by the affirmative vote of a majority of all votes entitled to be cast by the holders of the issued and outstanding shares of Common Stock of the Corporation.

15

EXHIBIT 3.3

Temporary Certificate - Exchangeable for Definitive Engraved Certificate When

                           Ready for Delivery

                              [KILROY LOGO]

    COMMON STOCK                                       COMMON STOCK

         KRC

INCORPORATED UNDER THE LAWS                  SEE REVERSE FOR IMPORTANT NOTICE
  OF THE STATE OF MARYLAND                        ON TRANSFER RESTRICTIONS
                                                    AND OTHER INFORMATION


                                                            CUSIP 49427F 10 8

THIS CERTIFIES THAT

IS THE RECORD HOLDER OF

FULLY PAID AND NONASSESSABLE SHARES OF THE COMMON STOCK, $0.1 PAR VALUE, OF

KILROY REALTY CORPORATION

(the "Corporation") transferable on the books of the Corporation by the holder hereof in person or by its duly authorized attorney, upon surrender of this Certificate properly endorsed. This Certificate and the shares represented hereby are issued and shall be held subject to all of the provisions of the charter of the Corporation (the "Charter") and the Bylaws of the Corporation and any amendments thereto. This Certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar.

IN WITNESS WHEREOF, the Corporation has caused this Certificate to be executed on its behalf by its duly authorized officers.

Dated:

- ---------------                                         --------------
  SECRETARY                                                PRESIDENT

[KILROY SEAL]

COUNTERSIGNED AND REGISTERED:
CHASEMELLON SHAREHOLDER SERVICES, L.L.C.
TRANSFER AGENT AND REGISTRAR
BY:

AUTHORIZED SIGNATURE

THE CORPORATION IS AUTHORIZED TO ISSUE CAPITAL STOCK OF MORE THAN ONE CLASS, CONSISTING OF COMMON STOCK AND ONE OR MORE CLASSES OF PREFERRED STOCK. THE BOARD OF DIRECTORS IS AUTHORIZED TO DETERMINE THE PREFERENCES, LIMITATIONS AND RELATIVE RIGHTS OF ANY CLASS OF THE PREFERRED STOCK BEFORE THE ISSUANCE OF SHARES OF SUCH CLASS OF PREFERRED STOCK. THE CORPORATION WILL FURNISH, WITHOUT CHARGE, TO ANY STOCKHOLDER MAKING A WRITTEN REQUEST THEREFOR, A COPY OF THE CORPORATION'S CHARTER AND A WRITTEN STATEMENT OF THE DESIGNATIONS, RELATIVE RIGHTS, PREFERENCES, CONVERSION OR OTHER RIGHTS, VOTING POWERS, RESTRICTIONS, LIMITATIONS AS TO DIVIDENDS AND OTHER DISTRIBUTIONS, QUALIFICATIONS AND TERMS AND CONDITIONS OF REDEMPTION OF THE STOCK OF EACH CLASS WHICH THE CORPORATION HAS THE AUTHORITY TO ISSUE AND, IF THE CORPORATION IS AUTHORIZED TO ISSUE ANY PREFERRED OR SPECIAL CLASS AND SERIES, (i) THE DIFFERENCES IN THE RELATIVE RIGHTS AND PREFERENCES BETWEEN THE SHARES OF EACH SERIES TO THE EXTENT SET, AND
(ii) THE AUTHORITY OF THE BOARD OF DIRECTORS TO SET SUCH RIGHTS AND PREFERENCES OF SUBSEQUENT SERIES. REQUESTS FOR SUCH WRITTEN STATEMENT MAY BE DIRECTED TO THE SECRETARY OF THE CORPORATION AT ITS PRINCIPAL OFFICE.

THE SHARES OF COMMON STOCK REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON BENEFICIAL AND CONSTRUCTIVE OWNERSHIP AND TRANSFER FOR THE PURPOSE OF THE CORPORATION'S MAINTENANCE OF ITS STATUS AS A REAL ESTATE INVESTMENT TRUST UNDER THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"). SUBJECT TO CERTAIN FURTHER RESTRICTIONS AND EXCEPT AS EXPRESSLY PROVIDED IN THE CORPORATION'S CHARTER, (i) NO PERSON MAY BENEFICIALLY OWN SHARES OF THE CORPORATION'S COMMON STOCK IN EXCESS OF 7.0% (BY VALUE OR BY NUMBER OF SHARES, WHICHEVER IS MORE RESTRICTIVE) OF THE OUTSTANDING COMMON STOCK OF THE CORPORATION; (ii) NO PERSON MAY CONSTRUCTIVELY OWN SHARES OF THE CORPORATION'S COMMON STOCK IN EXCESS OF 9.8% (BY VALUE OR BY NUMBER OF SHARES, WHICHEVER IS MORE RESTRICTIVE) OF THE OUTSTANDING COMMON STOCK OF THE CORPORATION; (iii) NO PERSON MAY BENEFICIALLY OR CONSTRUCTIVELY OWNS SHARES OF COMMON STOCK THAT WOULD RESULT IN THE CORPORATION BEING "CLOSELY HELD" UNDER SECTION 856(h) OF THE CODE OR OTHERWISE CAUSE THE CORPORATION TO FAIL TO QUALIFY AS A REIT; AND (iv) NO PERSON MAY TRANSFER SHARES OF COMMON STOCK IF SUCH TRANSFER WOULD RESULT IN THE CAPITAL STOCK OF THE CORPORATION BEING OWNED BY FEWER THAN 100 PERSONS. ANY PERSON WHO BENEFICIALLY OR CONSTRUCTIVELY OWNS SHARES OF COMMON STOCK WHICH CAUSES OR WILL CAUSE A PERSON TO BENEFICIALLY OR CONSTRUCTIVELY OWN SHARES OF COMMON STOCK IN EXCESS OF THE ABOVE LIMITATIONS MUST IMMEDIATELY NOTIFY THE CORPORATION. IF ANY OF THE RESTRICTIONS ON TRANSFER OR OWNERSHIP ARE VIOLATED, THE SHARES OF COMMON STOCK REPRESENTED HEREBY WILL BE AUTOMATICALLY TRANSFERRED TO THE TRUSTEE OF A TRUST FOR THE BENEFIT OF ONE OR MORE CHARITABLE BENEFICIARIES. IN ADDITION, THE CORPORATION MAY REDEEM SHARES UPON THE TERMS AND CONDITIONS SPECIFIED BY THE BOARD OF DIRECTORS IN ITS SOLE DISCRETION IF THE BOARD OF DIRECTORS DETERMINES THAT OWNERSHIP OR A TRANSFER OR OTHER EVENT MAY VIOLATE THE RESTRICTIONS DESCRIBED ABOVE. FURTHERMORE, UPON THE OCCURRENCE OF CERTAIN EVENTS, ATTEMPTED TRANSFERS IN VIOLATION OF THE RESTRICTIONS DESCRIBED ABOVE MAY BE VOID AB INITIO. ALL TERMS IN THIS LEGEND THAT ARE DEFINED IN THE CHARTER OF THE CORPORATION SHALL HAVE THE MEANINGS ASCRIBED TO THEM IN THE CHARTER OF THE CORPORATION, AS THE SAME MAY BE AMENDED FROM TIME TO TIME, A COPY OF WHICH, INCLUDING THE RESTRICTIONS ON TRANSFER AND OWNERSHIP, WILL BE FURNISHED TO EACH HOLDER OF SHARES OF COMMON STOCK ON REQUEST AND WITHOUT

CHARGE. REQUESTS FOR SUCH A COPY MAY BE DIRECTED TO THE SECRETARY OF THE CORPORATION AT ITS PRINCIPAL OFFICE.

The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations:

TEN COM -- as tenants in common                UNIF GIFT MIN ACT --        Custodian
                                                                   ........        ..........
                                                                    (Cust)           (Minor)

TEN ENT -- as tenants by the entireties                            under Uniform Gifts to Minors
                                                                   Act
JT TEN  -- as joint tenants with right of                             ..........................
           survivorship and not as tenants                                    (State)
           in common
                                               UNIF TRF MIN ACT --            Custodian (until age            )
                                                                  ............                    ............
                                                                     (Cust)
                                                                                 under Uniform Transfers
                                                                  ...............
                                                                     (Minor)
                                                                  to Minors Act
                                                                               -----------------------
                                                                                       (State)

Additional abbreviations may also be used though not in the above list.

     FOR VALUE RECEIVED,                  hereby sell, assign and transfer unto
                        ------------------

PLEASE INSERT SOCIAL SECURITY OR OTHER
   IDENTIFYING NUMBER OF ASSIGNEE
- ---------------------------------------

- ---------------------------------------


- --------------------------------------------------------------------------------
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                                                                          Shares
- --------------------------------------------------------------------------

of the common stock represented by the within Certificate, and do hereby irrevocably constitute and appoint

Attorney

to transfer the said stock on the books of the within named Corporation with full power of substitution in the premises.

Dated

X

X
NOTICE THE SIGNATURE(S) TO THIS ASSIGNMENT
MUST CORRESPOND WITH THE NAME(S) AS
WRITTEN UPON THE FACE OF THE
CERTIFICATE IN EVERY PARTICULAR,
WITHOUT ALTERATION OR ENLARGEMENT OR
ANY CHANGE WHATEVER

Signature(s) Guaranteed

By
THE SIGNATURE(S) SHOULD BE GUARANTEED
BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN
ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE
GUARANTEE MEDALLION PROGRAM), PURSUANT TO
S.E.C. RULE 17Ad-15

EXHIBIT 5.1

[LETTERHEAD OF BALLARD SPAHR ANDREWS & INGERSOLL]

January 21, 1997

Kilroy Realty Corporation
2250 East Imperial Highway
El Segundo, California 90245672

Re: Kilroy Realty Corporation, a Maryland corporation, (the "Company") - Registration Statement on Form S-11 pertaining to Twelve Million Nine Hundred Ninety Five Thousand (12,995,000) shares of common stock, par value one cent ($.01) per share (the "Shares")

Ladies and Gentlemen:

In connection with the registration of the Shares under the Securities Act of 1933 as amended (the "Act"), by the Company on Form S-11 filed with the Securities and Exchange Commission (the "Commission") on or about November 5, 1996, as amended (the "Registration Statement"), you have requested our opinion with respect to the matters set forth below.

We have acted as special Maryland corporate counsel for the Company in connection with the matters described herein. In our capacity as special Maryland corporate counsel to the Company, we have reviewed and are familiar with proceedings taken and proposed to be taken by the Company in connection with the authorization, issuance and sale of the Shares, and for purposes of this opinion have assumed such proceedings will be timely completed in the manner presently proposed. In addition, we have relied upon certificates and advice from the officers of the Company upon which we believe we are justified in relying and on various certificates form the documents recorded with, the State Department of Assessments and Taxation of Maryland (the "SDAT"), including the charter of the Corporation (the "Charter"), consisting of Articles of Incorporation filed with the SDAT on September 13, 1996 and Articles of Amendment and Restatement filed with the SDAT on January 20, 1997. We have also examined the Bylaws of the Company adopted as of September 13, 1996, (the Bylaws") and Resolutions of the Board of Directors of the Company adopted on or before January 20, 1997 and in full force and effect on January 20, 1997; and such


Kilroy Realty Corporation
January 21, 1997

Page 2

laws, records, documents, certificates, opinions and instruments as we deem necessary to render this opinion.

We have assumed the genuineness of all signatures and the authenticity of all documents submitted to us as originals and the conformity to the originals of all documents submitted to us as certified, photostatic or conformed copies. In addition, we have assumed that each person executing any instrument, document or certificate referred to herein on behalf of any party is duly authorized to do so.

Based on the foregoing, and subject to the assumptions and qualifications set forth herein, it is our opinion that, as of the date of this letter, the Shares have been duly authorized by all necessary corporation action on the part of the Company, and the Shares will, upon issuance and delivery in accordance with and subject to the terms and conditions described in the Registration Statement against payment of the purchase price therefore as determined by the Board of Directors of the Company or a committee thereof, by validly issued, fully paid and nonassessable.

We consent to your filing this opinion as an exhibit to the Registration Statement, and further consent to the filing of this opinion as an exhibit to the applications to securities commissioners for the various states of the United States for registration of the Shares. We also consent to the identification of our firm as Maryland counsel to the Company in the section of the Prospectus (which is part of the Registration Statement) entitled "Legal Matters."

The opinions expressed herein are limited to the laws of the State of Maryland and we express no opinion concerning any laws other than the laws of the State of Maryland. Furthermore, the opinions presented in this letter are limited to the matters specifically set forth herein and no other opinion shall be inferred beyond the matters expressly stated.

The opinions expressed in this letter are solely for your use and may not be relied upon by any other person without our prior written consent.

Very truly yours,

/s/ Ballard Spahr Andrews & Ingersoll

-------------------------------------


EXHIBIT 8.1

[LETTERHEAD OF LATHAM & WATKINS]

January 24, 1997

Kilroy Realty Corporation
2250 East Imperial Highway
El Segundo, California 90245

Re: Federal Income Tax Consequences

Ladies and Gentlemen:

We have acted as tax counsel to Kilroy Realty Corporation, a Maryland corporation (the "Company"), in connection with its formation and its sale of 11,300,000 shares of common stock (the "Common Stock"), par value $.01 per share of the Company, registered under the Securities Act of 1933, as amended, pursuant to a registration statement on Form S-11 (File No. 333-15553) filed with the Securities and Exchange Commission (the "Commission") on November 5, 1996, as amended by a registration statement (Amendment No. 1) on Form S-11 filed with the Commission on December 27, 1996, as amended by a registration statement (Amendment No. 2) on Form S-11 filed with the Commission on January 15, 1997 (such registration statement, as amended as of the time it became effective, the "Registration Statement").

You have requested our opinion concerning certain of the federal income tax consequences to the Company and the purchasers of the Common Stock in connection with the sale described above. This opinion is based on various facts and assumptions, including the facts set forth in the Registration Statement concerning the business, properties and governing documents of the Company, Kilroy Realty, L.P. (the "Operating Partnership") and their subsidiaries. Moreover, we are familiar with certain events and proceedings which are expected to take place prior to the closing of the transactions described in the Registration Statement, and this opinion is conditioned upon the occurrence of such events prior to closing. We have also been furnished with, and with your consent have relied upon, certain representations made by the Company, the Operating Partnership and their subsidiaries with respect to certain factual matters through a certificate of an officer of the Company (the


Kilroy Realty Corporation
January 24, 1997

Page 2

"Officer's Certificate"). With respect to matters of Maryland law, we have relied upon the opinion of Ballard Spahr Andrews & Ingersoll, counsel for the Company, dated January 24, 1997.

In our capacity as tax counsel to the Company, we have made such legal and factual examinations and inquiries, including an examination of originals or copies certified or otherwise identified to our satisfaction of such documents, corporate records and other instruments as we have deemed necessary or appropriate for purposes of this opinion. In our examination, we have assumed the authenticity of all documents submitted to us as originals, the genuineness of all signatures thereon, the legal capacity of natural persons executing such documents and the conformity to authentic original documents of all documents submitted to us as copies.

We are opining herein as to the effect on the subject transaction only of the federal income tax laws of the United States and we express no opinion with respect to the applicability thereto, or the effect thereon, of other federal laws, the laws of any state or other jurisdiction or as to any matters of municipal law or the laws of any other local agencies within any state.

Based on such facts, assumptions and representations, it is our opinion that:

1. Commencing with the Company's taxable year ending December 31, 1997, the Company will be organized in conformity with the requirements for qualification as a "real estate investment trust," and its proposed method of operation, as described in the representations of the Company, the Operating Partnership and their subsidiaries referred to above, will enable the Company to meet the require ments for qualification and taxation as a "real estate investment trust" under the Internal Revenue Code of 1986, as amended (the "Code").

2. The Operating Partnership will be treated as a partnership for federal income tax purposes (and not as an association or publicly traded partnership taxable as a corporation).

3. The statements in the Registration Statement set forth under the caption "Federal Income Tax Consequences" to the extent such information constitutes matters of law, summaries of legal matters, or legal conclusions, have been reviewed by us and are accurate in all material respects.

No opinion is expressed as to any matter not discussed herein.


Kilroy Realty Corporation
January 24, 1997

Page 3

This opinion is based on various statutory provisions, regulations promulgated thereunder and interpretations thereof by the Internal Revenue Service and the courts having jurisdiction over such matters, all of which are subject to change either prospectively or retroactively. Any such change may affect the conclusions stated herein. Also, any variation or difference in the facts from those set forth in the representations of the Company, the Operating Partnership and their subsidiaries (including those set forth in the Registration Statement or the Officer's Certificate) may affect the conclusions stated herein. Moreover, the Company's qualification and taxation as a real estate investment trust depends upon the Company's ability to meet, through actual annual operating results, distribution levels and diversity of stock ownership, the various qualification tests imposed under the Code, the results of which have not been and will not be reviewed by Latham & Watkins. Accordingly, no assurance can be given that the actual results of the Company's operation for any one taxable year will satisfy such requirements.

This opinion is rendered only to you, and is solely for your use in connection with the transactions set forth in the Registration Statement. This opinion may not be relied upon by you for any other purpose, or furnished to, quoted to, or relied upon by any other person, firm or corporation, for any purpose, without our prior written consent. We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the use of our name under the caption "Legal Matters" in the Registration Statement.

Very truly yours,

/s/ Latham & Watkins


EXHIBIT 10.1


AMENDED AND RESTATED

AGREEMENT OF LIMITED PARTNERSHIP

OF

KILROY REALTY, L.P.



TABLE OF CONTENTS

                                                                                           PAGE
                                                                                           ----

                                   ARTICLE 1
                                 DEFINED TERMS

Section 1.1      Definitions............................................................     1

                                   ARTICLE 2
                             ORGANIZATIONAL MATTERS

Section 2.1      Organization...........................................................    15
Section 2.2      Name...................................................................    15
Section 2.3      Resident Agent; Principal Office.......................................    15
Section 2.4      Power of Attorney......................................................    15
Section 2.5      Term...................................................................    17
Section 2.6      Number of Partners.....................................................    17

                                   ARTICLE 3
                                    PURPOSE

Section 3.1      Purpose and Business...................................................    17
Section 3.2      Powers.................................................................    17
Section 3.3      Partnership Only for Purposes Specified................................    18
Section 3.4      Representations and Warranties by the Parties..........................    18

                                   ARTICLE 4
                             CAPITAL CONTRIBUTIONS

Section 4.1      Capital Contributions of the Partners..................................    20
Section 4.2      Loans by Third Parties.................................................    20
Section 4.3      Additional Funding and Capital Contributions...........................    21
Section 4.4      Stock Incentive Plan...................................................    23
Section 4.5      Other Contribution Provisions..........................................    23

                                   ARTICLE 5
                                 DISTRIBUTIONS

Section 5.1      Requirement and Characterization of Distributions......................    23
Section 5.2      Distributions in Kind..................................................    24
Section 5.3      Distributions Upon Liquidation.........................................    24
Section 5.4      Distributions to Reflect Issuance of Additional Partnership Interests..    24

                                   ARTICLE 6
                                  ALLOCATIONS

Section 6.1      Timing and Amount of Allocations of Net Income and Net Loss............    24
Section 6.2      General Allocations....................................................    24
Section 6.3      Additional Allocation Provisions.......................................    25

i

Section 6.4      Tax Allocations........................................................    27

                                   ARTICLE 7
                     MANAGEMENT AND OPERATIONS OF BUSINESS

Section 7.1      Management.............................................................    28
Section 7.2      Certificate of Limited Partnership.....................................    31
Section 7.3      Restrictions on General Partner's Authority............................    32
Section 7.4      Reimbursement of the General Partner...................................    34
Section 7.5      Outside Activities of the General Partner..............................    35
Section 7.6      Contracts with Affiliates..............................................    36
Section 7.7      Indemnification........................................................    36
Section 7.8      Liability of the General Partner.......................................    38
Section 7.9      Other Matters Concerning the General Partner...........................    39
Section 7.10     Title to Partnership Assets............................................    40
Section 7.11     Reliance by Third Parties..............................................    40

                                  ARTICLE 8
                  RIGHTS AND OBLIGATIONS OF LIMITED PARTNERS

Section 8.1      Limitation of Liability................................................    41
Section 8.2      Management of Business.................................................    41
Section 8.3      Outside Activities of Limited Partners.................................    41
Section 8.4      Return of Capital......................................................    41
Section 8.5      Rights of Limited Partners Relating to the Partnership.................    42
Section 8.6      Redemption Rights......................................................    43

                                   ARTICLE 9
                    BOOKS, RECORDS, ACCOUNTING AND REPORTS

Section 9.1      Records and Accounting.................................................    45
Section 9.2      Fiscal Year............................................................    45
Section 9.3      Reports................................................................    45

                                  ARTICLE 10
                                  TAX MATTERS

Section 10.1     Preparation of Tax Returns.............................................    46
Section 10.2     Tax Elections..........................................................    46
Section 10.3     Tax Matters Partner....................................................    46
Section 10.4     Organizational Expenses................................................    48
Section 10.5     Withholding............................................................    48

                                   ARTICLE 11
                           TRANSFERS AND WITHDRAWALS

Section 11.1     Transfer...............................................................    49
Section 11.2     Transfer of General Partner's Partnership Interest.....................    49
Section 11.3     Limited Partners' Rights to Transfer...................................    51

ii

                                                                                           Page
                                                                                           ----
Section 11.4     Substituted Limited Partners...........................................    52
Section 11.5     Assignees..............................................................    53
Section 11.6     General Provisions.....................................................    53
Section 11.7     Transfer of Pledged Partnership Units..................................    55

                                   ARTICLE 12
                             ADMISSION OF PARTNERS

Section 12.1     Admission of Successor General Partner.................................    56
Section 12.2     Admission of Additional Limited Partners...............................    56
Section 12.3     Amendment of Agreement and Certificate of Limited Partnership..........    57

                                   ARTICLE 13
                          DISSOLUTION AND LIQUIDATION

Section 13.1     Dissolution............................................................    57
Section 13.2     Winding Up.............................................................    58
Section 13.3     Compliance with Timing Requirements of Regulations.....................    59
Section 13.4     Deemed Distribution and Recontribution.................................    59
Section 13.5     Rights of Limited Partners.............................................    60
Section 13.6     Notice of Dissolution..................................................    60
Section 13.7     Cancellation of Certificate of Limited Partnership.....................    60
Section 13.8     Reasonable Time for Winding-Up.........................................    60
Section 13.9     Waiver of Partition....................................................    60

                                   ARTICLE 14
                  AMENDMENT OF PARTNERSHIP AGREEMENT; CONSENTS

Section 14.1     Amendments.............................................................    60
Section 14.2     Action by the Partners.................................................    61

                                   ARTICLE 15
                               GENERAL PROVISIONS

Section 15.1     Addresses and Notice...................................................    62
Section 15.2     Titles and Captions....................................................    62
Section 15.3     Pronouns and Plurals...................................................    62
Section 15.4     Further Action.........................................................    62
Section 15.5     Binding Effect.........................................................    62
Section 15.6     Creditors..............................................................    63
Section 15.7     Waiver.................................................................    63
Section 15.8     Counterparts...........................................................    63
Section 15.9     Applicable Law.........................................................    63
Section 15.10    Invalidity of Provisions...............................................    63
Section 15.11    Limitation to Preserve REIT Status.....................................    63
Section 15.12    Entire Agreement.......................................................    64
Section 15.13    No Rights as Stockholders..............................................    64

iii

AMENDED AND RESTATED
AGREEMENT OF LIMITED PARTNERSHIP
OF
KILROY REALTY, L.P.

THIS AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP, dated as of _________, 1997, is entered into by and among Kilroy Realty Corporation, a Maryland corporation (the "Company"), as the General Partner and the Persons whose names are set forth on Exhibit A attached hereto, as the Limited Partners, together with any other Persons who become Partners in the Partnership as provided herein.

ARTICLE 1
DEFINED TERMS

WHEREAS, the limited partnership was formed on October 2, 1996 and an original agreement of limited partnership was entered into between the Company, as general partner and John B. Kilroy, Jr. as limited partner;

WHEREAS, the Company proposes to effect a public offering of its common stock, to acquire and cause the Partnership to acquire direct and indirect interests in 26 office and industrial properties and other assets, to cause the Partnership to enter into certain mortgage financing transactions, and to contribute the remaining net proceeds from the public offering to the Partnership;

WHEREAS, the Partnership will issue Partnership Interests to the Company and other persons in accordance with the foregoing transactions;

WHEREAS, upon the completion of the foregoing transactions, the Partnership shall return the original capital contributions made by the Company and Mr. Kilroy and any ongoing interest in the Partnership of the Company and Mr. Kilroy shall be based on their respective contributions as contemplated below;

WHEREAS, by virtue of their respective execution of this Agreement the Company and Mr. Kilroy hereby consent to the amendment and restatement of the original agreement of limited partnership;

NOW, THEREFORE, BE IT RESOLVED, that for good and adequate consideration, the receipt of which is hereby acknowledged, the parties hereto agree as follows:

Section 1.1 Definitions.

The following definitions shall be for all purposes, unless otherwise clearly indicated to the contrary, applied to the terms used in this Agreement.


"Act" means the Delaware Revised Uniform Limited Partnership Act, as

it may be amended from time to time, and any successor to such statute.

"Additional Funds" shall have the meaning set forth in Section 4.3.A.

"Additional Limited Partner" means a Person admitted to the Partnership as a Limited Partner pursuant to Section 12.2 hereof and who is shown as such on the books and records of the Partnership.

"Adjusted Capital Account Deficit" means, with respect to any Partner, the deficit balance, if any, in such Partner's Capital Account as of the end of the relevant fiscal year, after giving effect to the following adjustments:

(i) decrease such deficit by any amounts which such Partner is obligated to restore pursuant to this Agreement or is deemed to be obligated to restore pursuant to Regulations Section 1.704- 1(b)(2)(ii)(c) or the penultimate sentence of each of Regulations Sections 1.704-2(i)(5) and 1.704-2(g); and

(ii) increase such deficit by the items described in Regulations
Section 1.704-1(b)(2)(ii)(d)(4), (5) and (6).

The foregoing definition of Adjusted Capital Account Deficit is intended to comply with the provisions of Regulations Section 1.704- 1(b)(2)(ii)(d) and shall be interpreted consistently therewith.

"Adjustment Date" means, with respect to any Capital Contribution, the close of business on the Business Day last preceding the date of the Capital Contribution, provided, that if such Capital Contribution is being made by the General Partner in respect of the proceeds from the issuance of REIT Shares (or the issuance of the General Partner's securities exercisable for, convertible into or exchangeable for REIT Shares), then the Adjustment Date shall be as of the close of business on the Business Day last preceding the date of the issuance of such securities.

"Affiliate" means, with respect to any Person, any Person directly or indirectly controlling, controlled by or under common control with such Person.

"Agreed Value" means (i) in the case of any Contributed Property set forth in Exhibit A and as of the time of its contribution to the Partnership, the Agreed Value of such property as set forth in Exhibit A; (ii) in the case of any Contributed Property not set forth in Exhibit A and as of the time of its contribution to the Partnership, the fair market value of such property or other consideration as determined by the General Partner, reduced by any liabilities either assumed by the Partnership upon such contribution or to which such property is subject when contributed; and (iii) in the case of any property distributed to a Partner by the Partnership, the fair market value of such property as determined by the General Partner at the time such property is distributed, reduced by any indebtedness either assumed by such Partner

2

upon such distribution or to which such property is subject at the time of the distribution as determined under Section 752 of the Code and the Regulations thereunder.

"Agreement" means this Agreement of Limited Partnership, as it may be amended, modified, supplemented or restated from time to time.

"Appraisal" means with respect to any assets, the opinion of an independent third party experienced in the valuation of similar assets, selected by the General Partner in good faith; such opinion may be in the form of an opinion by such independent third party that the value for such asset as set by the General Partner is fair, from a financial point of view, to the Partnership.

"Assignee" means a Person to whom one or more Partnership Units have been transferred in a manner permitted under this Agreement, but who has not become a Substituted Limited Partner, and who has the rights set forth in
Section 11.5.

"Available Cash" means, with respect to any period for which such calculation is being made, (i) the sum of:

a. the Partnership's Net Income or Net Loss (as the case may be) for such period,

b. Depreciation and all other noncash charges deducted in determining Net Income or Net Loss for such period,

c. the amount of any reduction in reserves of the Partnership referred to in clause (ii)(f) below (including, without limitation, reductions resulting because the General Partner determines such amounts are no longer necessary),

d. the excess of the net proceeds from the sale, exchange, disposition, or refinancing of Partnership property for such period over the gain (or loss, as the case may be) recognized from any such sale, exchange, disposition, or refinancing during such period (excluding Terminating Capital Transactions), and

e. all other cash received by the Partnership for such period that was not included in determining Net Income or Net Loss for such period;

(ii) less the sum of:

a. all principal debt payments made during such period by the Partnership,

b. capital expenditures made by the Partnership during such period,

c. investments in any entity (including loans made thereto) to the extent that such investments are not otherwise described in clauses (ii)(a) or (b),

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d. all other expenditures and payments not deducted in determining Net Income or Net Loss for such period,

e. any amount included in determining Net Income or Net Loss for such period that was not received by the Partnership during such period,

f. the amount of any increase in reserves established during such period which the General Partner determines are necessary or appropriate in its sole and absolute discretion, and

g. the amount of any working capital accounts and other cash or similar balances which the General Partner determines to be necessary or appropriate in its sole and absolute discretion.

Notwithstanding the foregoing, Available Cash shall not include any cash received or reductions in reserves, or take into account any disbursements made or reserves established, after commencement of the dissolution and liquidation of the Partnership.

"Board of Directors" means the Board of Directors of the General Partner.

"Business Day" means any day except a Saturday, Sunday or other day on which commercial banks in Los Angeles, California and New York, New York are authorized or required by law to be closed.

"Capital Account" means, with respect to any Partner, the Capital Account maintained for such Partner in accordance with the following provisions:

(a) To each Partner's Capital Account there shall be added such Partner's Capital Contributions, such Partner's share of Net Income and any items in the nature of income or gain which are specially allocated pursuant to
Section 6.3, and the amount of any Partnership liabilities assumed by such Partner or which are secured by any property distributed to such Partner.

(b) From each Partner's Capital Account there shall be subtracted the amount of cash and the Gross Asset Value of any property distributed to such Partner pursuant to any provision of this Agreement, such Partner's distributive share of Net Losses and any items in the nature of expenses or losses which are specially allocated pursuant to Section 6.3 hereof, and the amount of any liabilities of such Partner assumed by the Partnership or which are secured by any property contributed by such Partner to the Partnership.

(c) In the event any interest in the Partnership is transferred in accordance with the terms of this Agreement (which does not result in a termination of the Partnership for federal income tax purposes), the transferee shall succeed to the Capital Account of the transferor to the extent it relates to the transferred interest.

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(d) In determining the amount of any liability for purposes of subsections (a) and (b) hereof, there shall be taken into account Code section 752(c) and any other applicable provisions of the Code and Regulations.

(e) The foregoing provisions and the other provisions of this Agreement relating to the maintenance of Capital Accounts are intended to comply with Regulations Sections 1.704-1(b) and 1.704-2, and shall be interpreted and applied in a manner consistent with such Regulations. In the event the General Partner shall determine that it is prudent to modify the manner in which the Capital Accounts, or any debits or credits thereto (including, without limitation, debits or credits relating to liabilities which are secured by contributed or distributed property or which are assumed by the Partnership, the General Partner, or the Limited Partners) are computed in order to comply with such Regulations, the General Partner may make such modification, provided that it is not likely to have a material effect on the amounts distributable to any Person pursuant to Article 13 of this Agreement upon the dissolution of the Partnership. The General Partner also shall (i) make any adjustments that are necessary or appropriate to maintain equality between the Capital Accounts of the Partners and the amount of Partnership capital reflected on the Partnership's balance sheet, as computed for book purposes, in accordance with Regulations Section 1.704-1(b)(2)(iv)(q), and (ii) make any appropriate modifications in the event unanticipated events might otherwise cause this Agreement not to comply with Regulations Section 1.704-1(b) or Section 1.704-2.

"Capital Contribution" means, with respect to any Partner, the amount of money and the initial Gross Asset Value of any property (other than money) contributed to the Partnership by such Partner.

"Cash Amount" means, with respect to any Partnership Units subject to a Redemption, an amount of cash equal to the Deemed Partnership Interest Value attributable to such Partnership Units.

"Certificate" means the Certificate of Limited Partnership relating to the Partnership filed in the office of the Secretary of State of Delaware, as amended from time to time in accordance with the terms hereof and the Act.

"Charter" means the Articles of Incorporation of the General Partner filed with the Maryland State Department of Assessments and Taxation on September 13, 1996, as amended or restated from time to time.

"Code" means the Internal Revenue Code of 1986, as amended from time

to time or any successor statute thereto, as interpreted by the applicable regulations thereunder. Any reference herein to a specific section or sections of the Code shall be deemed to include a reference to any corresponding provision of future law.

"Consent" means the consent to, approval of, or vote on a proposed action by a Partner given in accordance with Article 14 hereof.

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"Consent of the Limited Partners" means the Consent of a Majority in Interest of the Limited Partners, which Consent shall be obtained prior to the taking of any action for which it is required by this Agreement and may be given or withheld by a Majority in Interest of the Limited Partners, unless otherwise expressly provided herein, in their sole and absolute discretion.

"Consent of the Partners" means the Consent of Partners holding Percentage Interests that in the aggregate are equal to or greater than 60% of the aggregate Percentage Interests of all Partners, which Consent shall be obtained prior to the taking of any action for which it is required by this Agreement and may be given or withheld by such Partners, in their sole and absolute discretion.

"Constructively Own" means ownership under the constructive ownership rules described in Exhibit C.

"Contributed Property" means each property or other asset, in such form as may be permitted by the Act, but excluding cash, contributed or deemed contributed to the Partnership (or, to the extent provided in applicable regulations, deemed contributed to the Partnership on termination and reconstitution thereof pursuant to Section 708 of the Code).

"Debt" means, as to any Person, as of any date of determination, (i)

all indebtedness of such Person for borrowed money or for the deferred purchase price of property or services; (ii) all amounts owed by such Person to banks or other Persons in respect of reimbursement obligations under letters of credit, surety bonds and other similar instruments guaranteeing payment or other performance of obligations by such Person; (iii) all indebtedness for borrowed money or for the deferred purchase price of property or services secured by any lien on any property owned by such Person, to the extent attributable to such Person's interest in such property, even though such Person has not assumed or become liable for the payment thereof; and (iv) lease obligations of such Person which, in accordance with generally accepted accounting principles, should be capitalized.

"Deemed Partnership Interest Value" means, as of any date with respect to any class of Partnership Interests, the Deemed Value of the Partnership Interests of such class multiplied by the applicable Partner's Percentage Interest of such class.

"Deemed Value of the Partnership Interests" means, as of any date with respect to any class of Partnership Interests, (i) the total number of shares of capital stock of the General Partner corresponding to such class of Partnership Interests (as provided for in Sections 4.1 and 4.3.C) issued and outstanding as of the close of business on such date (excluding any treasury shares) multiplied by the Fair Market Value of a share of such capital stock on such date; (ii) divided by the Percentage Interest of the General Partner in such class of Partnership Interests on such date.

"Depreciation" means, for each fiscal year or other period, an amount equal to the depreciation, amortization or other cost recovery deduction allowable with respect to an asset for such year or other period, except that if the Gross Asset Value of an asset differs from its

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adjusted basis for federal income tax purposes at the beginning of such year or other period, Depreciation shall be an amount which bears the same ratio to such beginning Gross Asset Value as the federal income tax depreciation, amortization or other cost recovery deduction for such year or other period bears to such beginning adjusted tax basis; provided, however, that if the federal income tax depreciation, amortization or other cost recovery deduction for such year is zero, Depreciation shall be determined with reference to such beginning Gross Asset Value using any reasonable method selected by the General Partner.

"Effective Date" means the date of closing of the initial public offering of REIT Shares upon which date contributions set forth on Exhibit A shall become effective.

"Fair Market Value" means, with respect to any share of capital stock of the General Partner, the average of the daily market price for the ten (10) consecutive trading days immediately preceding the date with respect to which "Fair Market Value" must be determined hereunder or, if such date is not a Business Day, the immediately preceding Business Day. The market price for each such trading day shall be: (i) if such shares are listed or admitted to trading on any securities exchange or the Nasdaq National Market, the closing price, regular way, on such day, or if no such sale takes place on such day, the average of the closing bid and asked prices on such day, (ii) if such shares are not listed or admitted to trading on any securities exchange or the Nasdaq National Market, the last reported sale price on such day or, if no sale takes place on such day, the average of the closing bid and asked prices on such day, as reported by a reliable quotation source designated by the General Partner, or
(iii) if such shares are not listed or admitted to trading on any securities exchange or the Nasdaq National Market and no such last reported sale price or closing bid and asked prices are available, the average of the reported high bid and low asked prices on such day, as reported by a reliable quotation source designated by the General Partner, or if there shall be no bid and asked prices on such day, the average of the high bid and low asked prices, as so reported, on the most recent day (not more than 10 days prior to the date in question) for which prices have been so reported; provided that, if there are no bid and asked prices reported during the 10 days prior to the date in question, the Fair Market Value of such shares shall be determined by the General Partner acting in good faith on the basis of such quotations and other information as it considers, in its reasonable judgment, appropriate. In the event the REIT Shares Amount for such shares includes rights that a holder of such shares would be entitled to receive, then the Fair Market Value of such rights shall be determined by the General Partner acting in good faith on the basis of such quotations and other information as it considers, in its reasonable judgment, appropriate; and provided further that, in connection with determining the Deemed Value of the Partnership Interests for purposes of determining the number of additional Partnership Units issuable upon a Capital Contribution funded by an underwritten public offering of shares of capital stock of the General Partner, the Fair Market Value of such shares shall be the public offering price per share of such class of capital stock sold.

"Funding Debt" means the incurrence of any Debt by or on behalf of the General Partner for the purpose of providing funds to the Partnership.

"General Partner" means the Company or its successors as general partner of the Partnership.

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"General Partner Interest" means a Partnership Interest held by the General Partner. A General Partner Interest may be expressed as a number of Partnership Units.

"General Partner Loan" shall have the meaning set forth in Section 4.3.B.

"General Partner Payment" shall have the meaning set forth in Section 15.11.

"Gross Asset Value" means, with respect to any asset, the asset's adjusted basis for federal income tax purposes, except as follows:

(a) The initial Gross Asset Value of any asset contributed by a Partner to the Partnership shall be the gross fair market value of such asset, as determined by the contributing Partner and the General Partner (as set forth on Exhibit A attached hereto, as such Exhibit may be amended from time to time); provided that, if the contributing Partner is the General Partner then, except with respect to the General Partner's initial Capital Contribution which shall be determined as set forth on Exhibit A, or capital contributions of cash, REIT Shares or other shares of capital stock of the General Partner, the determination of the fair market value of the contributed asset shall be determined by (i) the price paid by the General Partner if the asset is acquired by the General Partner contemporaneously with its contribution to the Partnership, or (ii) by Appraisal if otherwise acquired by the General Partner.

(b) As of the times listed below, the Gross Asset Values of all Partnership assets shall be adjusted to equal their respective gross fair market values, as determined by the General Partner using such reasonable method of valuation as it may adopt, provided however, that for such purpose, the net value of all of the Partnership assets, in the aggregate, shall be equal to the Deemed Value of the Partnership Interests of all classes of Partnership Interests then outstanding, regardless of the method of valuation adopted by the General Partner:

(i) the acquisition of an additional interest in the Partnership by a new or existing Partner in exchange for more than a de minimis Capital Contribution, if the General Partner reasonably determines that such adjustment is necessary or appropriate to reflect the relative economic interests of the Partners in the Partnership;

(ii) the distribution by the Partnership to a Partner of more than a de minimis amount of Partnership property as consideration for an interest in the Partnership if the General Partner reasonably determines that such adjustment is necessary or appropriate to reflect the relative economic interests of the Partners in the Partnership;

(iii) the liquidation of the Partnership within the meaning of Regulations Section 1.704-1(b)(2)(ii)(g); and

(iv) at such other times as the General Partner shall reasonably determine necessary or advisable in order to comply with Regulations Sections 1.704-1(b) and 1.704-2.

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(c) The Gross Asset Value of any Partnership asset distributed to a Partner shall be the gross fair market value of such asset on the date of distribution as determined by the distributee and the General Partner, or if the distributee and the General Partner cannot agree on such a determination, by Appraisal.

(d) The Gross Asset Values of Partnership assets shall be increased (or decreased) to reflect any adjustments to the adjusted basis of such assets pursuant to Code Section 734(b) or Code Section 743(b), but only to the extent that such adjustments are taken into account in determining Capital Accounts pursuant to Regulations Section 1.704-1(b)(2)(iv)(m); provided, however, that Gross Asset Values shall not be adjusted pursuant to this subparagraph (d) to the extent that the General Partner reasonably determines that an adjustment pursuant to subparagraph (b) is necessary or appropriate in connection with a transaction that would otherwise result in an adjustment pursuant to this subparagraph (d).

(e) If the Gross Asset Value of a Partnership asset has been determined or adjusted pursuant to subparagraph (a), (b) or (d), such Gross Asset Value shall thereafter be adjusted by the Depreciation taken into account with respect to such asset for purposes of computing Net Income and Net Losses.

"Holder" means either the Partner or Assignee owning a Partnership Unit.

"Immediate Family" means, with respect to any natural Person, such natural Person's estate or heirs or current spouse or former spouse, parents, parents-in-law, children, siblings and grandchildren and any trust or estate, all of the beneficiaries of which consist of such Person or such Person's spouse, former spouse, parents, parents-in-law, children, siblings or grandchildren.

"Incapacity" or "Incapacitated" means, (i) as to any individual Partner, death, total physical disability or entry by a court of competent jurisdiction adjudicating him or her incompetent to manage his or her Person or his or her estate; (ii) as to any corporation which is a Partner, the filing of a certificate of dissolution, or its equivalent, for the corporation or the revocation of its charter; (iii) as to any partnership which is a Partner, the dissolution and commencement of winding up of the partnership; (iv) as to any estate which is a Partner, the distribution by the fiduciary of the estate's entire interest in the Partnership; (v) as to any trustee of a trust which is a Partner, the termination of the trust (but not the substitution of a new trustee); or (vi) as to any Partner, the bankruptcy of such Partner. For purposes of this definition, bankruptcy of a Partner shall be deemed to have occurred when (a) the Partner commences a voluntary proceeding seeking liquidation, reorganization or other relief under any bankruptcy, insolvency or other similar law now or hereafter in effect, (b) the Partner is adjudged as bankrupt or insolvent, or a final and nonappealable order for relief under any bankruptcy, insolvency or similar law now or hereafter in effect has been entered against the Partner, (c) the Partner executes and delivers a general assignment for the benefit of the Partner's creditors, (d) the Partner files an answer or other pleading admitting or failing to contest the material allegations of a petition filed against the Partner in any proceeding of the nature described in clause (b) above, (e) the Partner seeks, consents to or acquiesces in the appointment of a trustee, receiver or liquidator for the Partner or for all or any substantial part

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of the Partner's properties, (f) any proceeding seeking liquidation, reorganization or other relief under any bankruptcy, insolvency or other similar law now or hereafter in effect has not been dismissed within 120 days after the commencement thereof, (g) the appointment without the Partner's consent or acquiescence of a trustee, receiver or liquidator has not been vacated or stayed within 90 days of such appointment, or (h) an appointment referred to in clause
(g) is not vacated within 90 days after the expiration of any such stay.

"Indemnitee" means (i) any Person subject to a claim or demand or made or threatened to be made a party to, or involved or threatened to be involved in, an action, suit or proceeding by reason of his or her status as (A) the General Partner or (B) a director, officer, employee or agent of the Partnership or the General Partner, and (ii) such other Persons (including Affiliates of the General Partner or the Partnership) as the General Partner may designate from time to time, in its sole and absolute discretion.

"IRS" means the Internal Revenue Service, which administers the

internal revenue laws of the United States.

"Limited Partner" means any Person named as a Limited Partner in Exhibit A attached hereto, as such Exhibit may be amended from time to time, or any Substituted Limited Partner or Additional Limited Partner, in such Person's capacity as a Limited Partner in the Partnership.

"Limited Partnership Interest" means a Partnership Interest of a Limited Partner representing a fractional part of the Partnership Interests of all Limited Partners and includes any and all benefits to which the holder of such a Partnership Interest may be entitled as provided in this Agreement, together with all obligations of such Person to comply with the terms and provisions of this Agreement. A Limited Partnership Interest may be expressed as a number of Partnership Units.

"Liquidating Events" shall have the meaning set forth in Section 13.1.

"Liquidator" shall have the meaning set forth in Section 13.2.A.

"Majority in Interest of the Limited Partners" means Limited Partners (other than the General Partner and any Limited Partner 50% or more of whose equity is owned, directly or indirectly, by the General Partner) holding Percentage Interests that in the aggregate are greater than fifty percent (50%) of the aggregate Percentage Interests of all Limited Partners (other than the General Partner and any Limited Partner 50% or more of whose equity is owned, directly or indirectly, by the General Partner).

"Majority in Interest of Partners" means Partners holding Percentage Interests that are greater than fifty percent (50%) of the aggregate Percentage Interests of all Partners.

"Net Income" or "Net Loss" means for each fiscal year of the Partnership, an amount equal to the Partnership's taxable income or loss for such fiscal year, determined in accordance with Code Section 703(a) (for this purpose, all items of income, gain, loss or

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deduction required to be stated separately pursuant to Code Section 703(a)(1) shall be included in taxable income or loss), with the following adjustments:

(a) Any income of the Partnership that is exempt from federal income tax and not otherwise taken into account in computing Net Income or Net Loss pursuant to this definition of Net Income or Net Loss shall be added to such taxable income or loss;

(b) Any expenditures of the Partnership described in Code Section 705(a)(2)(B) or treated as Code Section 705(a)(2)(B) expenditures pursuant to Regulations Section 1.704-1(b)(2)(iv)(i), and not otherwise taken into account in computing Net Income or Net Loss pursuant to this definition of Net Income or Net Loss shall be subtracted from such taxable income or loss;

(c) In the event the Gross Asset Value of any Partnership asset is adjusted pursuant to subparagraph (b) or subparagraph (c) of the definition of Gross Asset Value, the amount of such adjustment shall be taken into account as gain or loss from the disposition of such asset for purposes of computing Net Income or Net Loss;

(d) Gain or loss resulting from any disposition of property with respect to which gain or loss is recognized for federal income tax purposes shall be computed by reference to the Gross Asset Value of the property disposed of, notwithstanding that the adjusted tax basis of such property differs from its Gross Asset Value;

(e) In lieu of the depreciation, amortization, and other cost recovery deductions taken into account in computing such taxable income or loss, there shall be taken into account Depreciation for such fiscal year;

(f) To the extent an adjustment to the adjusted tax basis of any Partnership asset pursuant to Code Section 734(b) or Code Section 743(b) is required pursuant to Regulations Section 1.704-1(b)(2)(iv)(m)(4) to be taken into account in determining Capital Accounts as a result of a distribution other than in liquidation of a Partner's interest in the Partnership, the amount of such adjustment shall be treated as an item of gain (if the adjustment increases the basis of the asset) or loss (if the adjustment decreases the basis of the asset) from the disposition of the asset and shall be taken into account for purposes of computing Net Income or Net Loss; and

(g) Notwithstanding any other provision of this definition of Net Income or Net Loss, any items which are specially allocated pursuant to Section 6.3 hereof shall not be taken into account in computing Net Income or Net Loss. The amounts of the items of Partnership income, gain, loss, or deduction available to be specially allocated pursuant to Section 6.3 hereof shall be determined by applying rules analogous to those set forth in this definition of Net Income or Net Loss.

"New Securities" means (i) any rights, options, warrants or convertible or exchangeable securities having the right to subscribe for or purchase REIT Shares or other shares of capital stock of the General Partner, excluding grants under any Stock Option Plan,

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or (ii) any Debt issued by the General Partner that provides any of the rights described in clause (i).

"Nonrecourse Deductions" shall have the meaning set forth in Regulations Section 1.704-2(b)(1), and the amount of Nonrecourse Deductions for a Partnership Year shall be determined in accordance with the rules of Regulations Section 1.704-2(c).

"Nonrecourse Liability" shall have the meaning set forth in Regulations Section 1.752-1(a)(2).

"Notice of Redemption" means the Notice of Redemption substantially in the form of Exhibit B to this Agreement.

"Original Limited Partner" means the Limited Partner of the Partnership, listed on Schedule A hereto, as of ____________, 1997.

"Partner" means a General Partner or a Limited Partner, and "Partners"
means the General Partner and the Limited Partners.

"Partner Minimum Gain" means an amount, with respect to each Partner Nonrecourse Debt, equal to the Partnership Minimum Gain that would result if such Partner Nonrecourse Debt were treated as a Nonrecourse Liability, determined in accordance with Regulations Section 1.704-2(i)(3).

"Partner Nonrecourse Debt" shall have the meaning set forth in Regulations Section 1.704-2(b)(4).

"Partner Nonrecourse Deductions" shall have the meaning set forth in Regulations Section 1.704-2(i)(2), and the amount of Partner Nonrecourse Deductions with respect to a Partner Nonrecourse Debt for a Partnership Year shall be determined in accordance with the rules of Regulations Section 1.704- 2(i)(2).

"Partnership" means the limited partnership formed under the Act and pursuant to this Agreement, and any successor thereto.

"Partnership Interest" means, an ownership interest in the Partnership of either a Limited Partner or the General Partner and includes any and all benefits to which the holder of such a Partnership Interest may be entitled as provided in this Agreement, together with all obligations of such Person to comply with the terms and provisions of this Agreement. There may be one or more classes of Partnership Interests as provided in Section 4.3. A Partnership Interest may be expressed as a number of Partnership Units. Unless otherwise expressly provided for by the General Partner at the time of the original issuance of any Partnership Interests, all Partnership Interests (whether of a Limited Partner or a General Partner) shall be of the same class.

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"Partnership Minimum Gain" shall have the meaning set forth in Regulations Section 1.704-2(b)(2), and the amount of Partnership Minimum Gain, as well as any net increase or decrease in Partnership Minimum Gain, for a Partnership Year shall be determined in accordance with the rules of Regulations
Section 1.704-2(d).

"Partnership Record Date" means the record date established by the General Partner for the distribution of Available Cash pursuant to Section 5.1 hereof which record date shall be the same as the record date established by the General Partner for a distribution to its stockholders of some or all of its portion of such distribution.

"Partnership Unit" means, with respect to any class of Partnership Interest, a fractional, undivided share of such class of Partnership Interest issued pursuant to Sections 4.1 and 4.3. The ownership of Partnership Units may be evidenced by a certificate for units substantially in the form of Exhibit D hereto or as the General Partner may determine with respect to any class of Partnership Units issued from time to time under Section 4.1 and 4.3.

"Partnership Year" means the fiscal year of the Partnership, which shall be the calendar year.

"Percentage Interest" means, as to a Partner holding a class of Partnership Interests, its interest in the Partnership as determined by dividing the Partnership Units of such class owned by such Partner by the total number of Partnership Units of such class then outstanding as specified in Exhibit A attached hereto, as such Exhibit may be amended from time to time. If the Partnership issues more than one class of Partnership Interest, the interest in the Partnership among the classes of Partnership Interests shall be determined as set forth in the amendment to the Partnership Agreement setting forth the rights and privileges of such additional classes of Partnership Interest, if any, as contemplated by Section 4.3.C hereof.

"Person" means an individual or a corporation, partnership, limited liability company, trust, unincorporated organization, association or other entity.

"Pledge" shall have the meaning set forth in Section 11.3.A.

"Pledge Agreement" means the Pledge Agreement dated as of _______________, 1997 among the Company, as agent, and the Pledgors, as same may be amended, modified or supplemented from time to time in accordance with its terms.

"Pledgors" means Kilroy Industries, a California corporation, John B. Kilroy, Sr. and John B. Kilroy, Jr.

"Properties" means such interests in real property and personal property including without limitation, fee interests, interests in ground leases, interests in joint ventures, interests in mortgages, and Debt instruments as the Partnership may hold from time to time.

"Qualified REIT Subsidiary" means any Subsidiary of the General Partner that is a "qualified REIT subsidiary" within the meaning of Section 856(i) of the Code.

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"Qualified Transferee" means an "Accredited Investor" as defined in Rule 501 promulgated under the Securities Act.

"Redemption" shall have the meaning set forth in Section 8.6.A.

"Regulations" means the Income Tax Regulations promulgated under the Code, as such regulations may be amended from time to time (including corresponding provisions of succeeding regulations).

"Regulatory Allocations" shall have the meaning set forth in Section 6.3.A(viii) of this Agreement.

"REIT" means a real estate investment trust under Sections 856 through

860 of the Code.

"REIT Requirements" shall have the meaning set forth in Section 5.1.

"REIT Share" means a share of common stock, par value $.01 per share, of the General Partner.

"REIT Shares Amount" means, as of any date, an aggregate number of REIT Shares equal to the number of Tendered Units, or in the case of Section 11.2.B, all Units, as adjusted pursuant to Section 7.5 (in the event the General Partner acquires material assets, other than on behalf of the Partnership) and for stock dividends and distributions, stock splits and subdivisions, reverse stock splits and combinations, distributions of rights, warrants or options, and distributions of evidences of indebtedness or assets relating to assets not received by the General Partner pursuant to a pro rata distribution by the

Partnership.

"Securities Act" means the Securities Act of 1933, as amended, and the rules and regulations of the Securities and Exchange Commission promulgated thereunder.

"Securities Exchange Act" means the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Securities and Exchange Commission promulgated thereunder.

"Specified Redemption Date" means the day of receipt by the General Partner of a Notice of Redemption.

"Stock Incentive Plan" means any stock incentive plan of the General Partner.

"Subsidiary" means, with respect to any Person, any corporation or other entity of which a majority of (i) the voting power of the voting equity securities or (ii) the outstanding equity interests is owned, directly or indirectly, by such Person.

"Subsidiary Partnership" means any partnership that is a Subsidiary of the Partnership.

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"Substituted Limited Partner" means a Person who is admitted as a Limited Partner to the Partnership pursuant to Section 11.4.

"Surviving Partnership" shall have the meaning set forth in Section 11.2.C.

"Tax Items" shall have the meaning set forth in Section 6.4.A.

"Tenant" means any tenant from which the General Partner derives rent either directly or indirectly through partnerships, including the Partnership.

"Tendered Units" shall have the meaning set forth in Section 8.6.A.

"Tendering Partner" shall have the meaning set forth in Section 8.6.A.

"Terminating Capital Transaction" means any sale or other disposition of all or substantially all of the assets of the Partnership or a related series of transactions that, taken together, result in the sale or other disposition of all or substantially all of the assets of the Partnership.

ARTICLE 2
ORGANIZATIONAL MATTERS

Section 2.1 Organization

The Partnership is a limited partnership formed pursuant to the provisions of the Act and upon the terms and conditions set forth in this Agreement. Except as expressly provided herein, the rights and obligations of the Partners and the administration and termination of the Partnership shall be governed by the Act. The Partnership Interest of each Partner shall be personal property for all purposes.

Section 2.2 Name

The name of the Partnership is Kilroy Realty, L.P. The Partnership's business may be conducted under any other name or names deemed advisable by the General Partner, including the name of the General Partner or any Affiliate thereof. The words "Limited Partnership," "L.P.," "Ltd." or similar words or letters shall be included in the Partnership's name where necessary for the purposes of complying with the laws of any jurisdiction that so requires. The General Partner in its sole and absolute discretion may change the name of the Partnership at any time and from time to time and shall notify the Limited Partners of such change in the next regular communication to the Limited Partners.

Section 2.3 Resident Agent; Principal Office

The name and address of the resident agent of the Partnership in the State of Delaware is Prentice-Hall Corporation Systems, Inc., 1013 Centre Road, Wilmington, DE

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19805. The address of the principal office of the Partnership in the State of Delaware is c/o Prentice-Hall Corporation Systems, Inc., 1013 Centre Road, Wilmington, DE 19805 at such address. The principal office of the Partnership is located at 2250 East Imperial Highway, El Segundo, California 90245, or such other place as the General Partner may from time to time designate by notice to the Limited Partners. The Partnership may maintain offices at such other place or places within or outside the State of Delaware as the General Partner deems advisable.

Section 2.4 Power of Attorney

A. Each Limited Partner and each Assignee constitutes and appoints the General Partner, any Liquidator, and authorized officers and attorneys-in- fact of each, and each of those acting singly, in each case with full power of substitution, as its true and lawful agent and attorney-in-fact, with full power and authority in its name, place and stead to:

(1) execute, swear to, acknowledge, deliver, file and record in the appropriate public offices (a) all certificates, documents and other instruments (including, without limitation, this Agreement and the Certificate and all amendments or restatements thereof) that the General Partner or the Liquidator deems appropriate or necessary to form, qualify or continue the existence or qualification of the Partnership as a limited partnership (or a partnership in which the Limited Partners have limited liability) in the State of Delaware and in all other jurisdictions in which the Partnership may conduct business or own property; (b) all instruments that the General Partner or any Liquidator deems appropriate or necessary to reflect any amendment, change, modification or restatement of this Agreement in accordance with its terms; (c) all conveyances and other instruments or documents that the General Partner or any Liquidator deems appropriate or necessary to reflect the dissolution and liquidation of the Partnership pursuant to the terms of this Agreement, including, without limitation, a certificate of cancellation; (d) all instruments relating to the admission, withdrawal, removal or substitution of any Partner pursuant to, or other events described in, Articles 11, 12 and 13 hereof or the Capital Contribution of any Partner; and (e) all certificates, documents and other instruments relating to the determination of the rights, preferences and privileges of Partnership Interests; and

(2) execute, swear to, acknowledge and file all ballots, consents, approvals, waivers, certificates and other instruments appropriate or necessary, in the sole and absolute discretion of the General Partner or any Liquidator, to make, evidence, give, confirm or ratify any vote, consent, approval, agreement or other action which is made or given by the Partners hereunder or is consistent with the terms of this Agreement or appropriate or necessary, in the sole discretion of the General Partner or any Liquidator, to effectuate the terms or intent of this Agreement.

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Nothing contained herein shall be construed as authorizing the General Partner or any Liquidator to amend this Agreement except in accordance with Article 14 hereof or as may be otherwise expressly provided for in this Agreement.

B. The foregoing power of attorney is hereby declared to be irrevocable and a power coupled with an interest, in recognition of the fact that each of the Partners will be relying upon the power of the General Partner and any Liquidator to act as contemplated by this Agreement in any filing or other action by it on behalf of the Partnership, and it shall survive and not be affected by the subsequent Incapacity of any Limited Partner or Assignee and the transfer of all or any portion of such Limited Partner's or Assignee's Partnership Units and shall extend to such Limited Partner's or Assignee's heirs, successors, assigns and personal representatives. Each such Limited Partner or Assignee hereby agrees to be bound by any representation made by the General Partner or any Liquidator, acting in good faith pursuant to such power of attorney; and each such Limited Partner or Assignee hereby waives any and all defenses which may be available to contest, negate or disaffirm the action of the General Partner or any Liquidator, taken in good faith under such power of attorney. Each Limited Partner or Assignee shall execute and deliver to the General Partner or any Liquidator, within 15 days after receipt of the General Partner's or Liquidator's request therefor, such further designation, powers of attorney and other instruments as the General Partner or the Liquidator, as the case may be, deems necessary to effectuate this Agreement and the purposes of the Partnership.

Section 2.5 Term

The term of the Partnership commenced on October 2, 1996 and shall continue until December 31, 2095 unless it is dissolved sooner pursuant to the provisions of Article 13 or as otherwise provided by law.

Section 2.6 Number of Partners

The Partnership shall not at any time have more than 100 partners (including as partners those persons indirectly owning an interest in the Partnership through a partnership, limited liability company, S corporation or grantor trust (such entity, a "flow through entity"), but only if substantially all of the value of such person's interest in the flow through entity is attributable to the flow through entity's interest (direct or indirect) in the Partnership).

ARTICLE 3
PURPOSE

Section 3.1 Purpose and Business

The purpose and nature of the business to be conducted by the Partnership is (i) to conduct any business that may be lawfully conducted by a limited partnership organized pursuant to the Act, provided, however, that such business shall be limited to and conducted in such a manner as to permit the General Partner at all times to be classified as a REIT for federal

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income tax purposes, unless the General Partner ceases to qualify as a REIT for reasons other than the conduct of the business of the Partnership, (ii) to enter into any partnership, joint venture or other similar arrangement to engage in any of the foregoing or to own interests in any entity engaged, directly or indirectly, in any of the foregoing and (iii) to do anything necessary or incidental to the foregoing. In connection with the foregoing, and without limiting the General Partner's right in its sole discretion to cease qualifying as a REIT, the Partners acknowledge that the General Partner's current status as a REIT inures to the benefit of all the Partners and not solely the General Partner.

Section 3.2 Powers

The Partnership is empowered to do any and all acts and things necessary, appropriate, proper, advisable, incidental to or convenient for the furtherance and accomplishment of the purposes and business described herein and for the protection and benefit of the Partnership, including, without limitation, full power and authority, directly or through its ownership interest in other entities, to enter into, perform and carry out contracts of any kind, borrow money and issue evidences of indebtedness, whether or not secured by mortgage, deed of trust, pledge or other lien, acquire and develop real property, and manage, lease, sell, transfer and dispose of real property; provided, however, that the Partnership shall not take, or refrain from taking, any action which, in the judgment of the General Partner, in its sole and absolute discretion, (i) could adversely affect the ability of the General Partner to continue to qualify as a REIT, (ii) could subject the General Partner to any taxes under Section 857 or Section 4981 of the Code, or (iii) could violate any law or regulation of any governmental body or agency having jurisdiction over the General Partner or its securities, unless any such action (or inaction) under (i), (ii) or (iii) shall have been specifically consented to by the General Partner in writing.

Section 3.3 Partnership Only for Purposes Specified

The Partnership shall be a partnership only for the purposes specified in Section 3.1 hereof, and this Agreement shall not be deemed to create a partnership among the Partners with respect to any activities whatsoever other than the activities within the purposes of the Partnership as specified in
Section 3.1 hereof. Except as otherwise provided in this Agreement, no Partner shall have any authority to act for, bind, commit or assume any obligation or responsibility on behalf of the Partnership, its properties or any other Partner. No Partner, in its capacity as a Partner under this Agreement, shall be responsible or liable for any indebtedness or obligation of another Partner, nor shall the Partnership be responsible or liable for any indebtedness or obligation of any Partner, incurred either before or after the execution and delivery of this Agreement by such Partner, except as to those responsibilities, liabilities, indebtedness or obligations incurred pursuant to and as limited by the terms of this Agreement and the Act.

Section 3.4 Representations and Warranties by the Parties

A. Each Partner that is an individual represents and warrants to each other Partner that (i) such Partner has in the case of any Person other than an individual, the power

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and authority, and in the case of an individual, the legal capacity, to enter into this Agreement and perform such Partner's obligations hereunder, (ii) the consummation of the transactions contemplated by this Agreement to be performed by such Partner will not result in a breach or violation of, or a default under, any agreement by which such Partner or any of such Partner's property is or are bound, or any statute, regulation, order or other law to which such Partner is subject, (iii) such Partner is neither a "foreign person" within the meaning of
Section 1445(f) of the Code nor a "foreign partner" within the meaning of
Section 1446(e) of the Code, and (iv) this Agreement has been duly executed and delivered by such Partner and is binding upon, and enforceable against, such Partner in accordance with its terms.

B. Each Partner that is not an individual represents and warrants to each other Partner that (i) its execution and delivery of this Agreement and all transactions contemplated by this Agreement to be performed by it have been duly authorized by all necessary action, including without limitation, that of its general partner(s), committee(s), trustee(s), beneficiaries, directors and/or stockholder(s), as the case may be, as required, (ii) the consummation of such transactions shall not result in a breach or violation of, or a default under, its certificate of limited partnership, partnership agreement, trust agreement, limited liability company operating agreement, charter or by-laws, as the case may be, any agreement by which such Partner or any of such Partner's properties or any of its partners, beneficiaries, trustees or stockholders, as the case may be, is or are bound, or any statute, regulation, order or other law to which such Partner or any of its partners, trustees, beneficiaries or stockholders, as the case may be, is or are subject, (iii) such Partner is neither a "foreign person" within the meaning of Section 1445(f) of the Code nor a "foreign partner" within the meaning of Section 1446(e) of the Code, and (iv) this Agreement has been duly executed and delivered by such Partner and is binding upon, and enforceable against, such Partner in accordance with its terms.

C. Each Partner represents, warrants and agrees that it has acquired and continues to hold its interest in the Partnership for its own account for investment only and not for the purpose of, or with a view toward, the resale or distribution of all or any part thereof, nor with a view toward selling or otherwise distributing such interest or any part thereof at any particular time or under any predetermined circumstances. Each Partner further represents and warrants that it is a sophisticated investor, able and accustomed to handling sophisticated financial matters for itself, particularly real estate investments, and that it has a sufficiently high net worth that it does not anticipate a need for the funds it has invested in the Partnership in what it understands to be a highly speculative and illiquid investment.

D. Each Partner further represents, warrants and agrees as follows:

(i) Except as provided in Exhibit E, it does not and will not, without the prior written consent of the General Partner, actually own or Constructively Own (a) with respect to any Tenant that is a corporation, any stock of such Tenant, and (b) with respect to any Tenant that is not a corporation, any interests in either the assets or net profits of such Tenant; provided, however, that so long as there are fewer than 20 Partners, each Partner may own or Constructively Own (x) with respect to any Tenant that is a corporation, stock of such Tenant possessing up to, but not more than, one-half of one percent (0.5%) of the total combined voting power of all classes of stock entitled to vote and one-half of one percent (0.5%) of the total

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number of shares of all classes of stock of such Tenant and (y) with respect to any Tenant that is not a corporation, interests in such Tenant representing up to, but not more than, one-half of one percent (0.5%) of the assets and one-half of one percent (0.5%) of the net profits of such Tenant, so long as such actual or Constructive Ownership otherwise permitted under clause (x) or (y) would not cause the General Partner to receive amounts described in Section 856 (d)(2)(B) of the Code.

(ii) Except as provided in Exhibit F, it does not, and agrees that it will not without the prior written consent of the General Partner, actually own or Constructively Own, any stock in the General Partner, other than any REIT Shares or other shares of capital stock of the General Partner such Partner may acquire (a) as a result of an exchange of Tendered Units pursuant to
Section 8.6 or (b) upon the exercise of options granted or delivery of REIT Shares pursuant to any Stock Incentive Plan, in each case subject to the ownership limitations set forth in the General Partner's Charter.

(iii) Upon request of the General Partner, it will disclose to the General Partner the amount of REIT Shares or other shares of capital stock of the General Partner that it actually owns or Constructively Owns.

(iv) It understands that if, for any reason, (a) the representations, warranties or agreements set forth in Subparagraph D(i) or (ii) of this Section 3.4 are violated, or (b) the Partnership's actual or Constructive Ownership of the REIT Shares or other shares of capital stock of the General Partner violates the limitations set forth in the Charter, then (1) some or all of the Redemption rights of the Partners may become non-exercisable, and (2) some or all of the REIT Shares owned by the Partners may be automatically transferred to a trust for the benefit of a charitable beneficiary, as provided in the Charter.

E. The representations and warranties contained in Sections 3.4.A, 3.4.B, 3.4.C and 3.4.D hereof shall survive the execution and delivery of this Agreement by each Partner and the dissolution and winding up of the Partnership.

F. Each Partner hereby acknowledges that no representations as to potential profit, cash flows, funds from operations or yield, if any, in respect of the Partnership or the General Partner have been made by any Partner or any employee or representative or Affiliate of any Partner, and that projections and any other information, including, without limitation, financial and descriptive information and documentation, which may have been in any manner submitted to such Partner shall not constitute any representation or warranty of any kind or nature, express or implied.

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ARTICLE 4
CAPITAL CONTRIBUTIONS

Section 4.1 Capital Contributions of the Partners

At the time of their respective execution of this Agreement, the Partners shall make Capital Contributions as set forth in Exhibit A to this Agreement. The Partners shall own Partnership Units of the class and in the amounts set forth in Exhibit A and shall have a Percentage Interest in the Partnership as set forth in Exhibit A, which Percentage Interest shall be adjusted in Exhibit A from time to time by the General Partner to the extent necessary to accurately reflect exchanges, redemptions, Capital Contributions, the issuance of additional Partnership Units or similar events having an effect on a Partner's Percentage Interest. Except as required by law or as otherwise provided in Sections 4.3, 4.4 and 10.5, no Partner shall be required or permitted to make any additional Capital Contributions or loans to the Partnership. Unless otherwise specified by the General Partner at the time of the creation of any class of Partnership Interests, the corresponding class of capital stock for any Partnership Units issued shall be REIT Shares.

Section 4.2 Loans by Third Parties

Subject to Section 4.3, the Partnership may incur Debt, or enter into other similar credit, guarantee, financing or refinancing arrangements for any purpose (including, without limitation, in connection with any further acquisition of Properties) with any Person that is not the General Partner upon such terms as the General Partner determines appropriate; provided that, the Partnership shall not incur any Debt that is recourse to the General Partner, except to the extent otherwise agreed to by the General Partner in its sole discretion.

Section 4.3 Additional Funding and Capital Contributions

A. General. The General Partner may, at any time and from time to time, determine that the Partnership requires additional funds ("Additional Funds") for the acquisition of additional Properties or for such other Partnership purposes as the General Partner may determine. Additional Funds may be raised by the Partnership, at the election of the General Partner, in any manner provided in, and in accordance with, the terms of this Section 4.3. No Person shall have any preemptive, preferential or similar right or rights to subscribe for or acquire any Partnership Interest, except as set forth in this
Section 4.3.

B. General Partner Loans. The General Partner may enter into a Funding Debt, including, without limitation, a Funding Debt that is convertible into REIT Shares, and lend the Additional Funds to the Partnership (a "General Partner Loan"); provided, however, that the General Partner shall not be obligated to lend the net proceeds of any Funding Debt to the Partnership in a manner that would be inconsistent with the General Partner's ability to remain qualified as a REIT. If the General Partner enters into such a Funding Debt, the General Partner Loan will consist of the net proceeds from such Funding Debt and will be on comparable terms and conditions, including interest rate, repayment schedule and costs and expenses, as shall be applicable with respect to or incurred in connection with such Funding Debt.

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C. Issuance of Additional Partnership Interests. The General Partner may raise all or any portion of the Additional Funds by accepting additional Capital Contributions, including, without limitation, the issuance of Units for interests in real property. In connection with any such additional Capital Contributions (of cash or property), the General Partner is hereby authorized to cause the Partnership from time to time to issue to Partners (including the General Partner) or other Persons (including, without limitation, in connection with the contribution of property to the Partnership) additional Partnership Units or other Partnership Interests in one or more classes, or one or more series of any of such classes, with such designations, preferences and relative, participating, optional or other special rights, powers, and duties, including rights, powers, and duties senior to then existing Limited Partnership Interests, all as shall be determined by the General Partner in its sole and absolute discretion subject to Delaware law, and as set forth by amendment to this Agreement, including without limitation, (i) the allocations of items of Partnership income, gain, loss, deduction, and credit to such class or series of Partnership Interests; (ii) the right of each such class or series of Partnership Interests to share in Partnership distributions; (iii) the rights of each such class or series of Partnership Interests upon dissolution and liquidation of the Partnership; and (iv) the right to vote, including, without limitation, the limited partner approval rights set forth in Section 11.2.A hereof; provided that no such additional Partnership Units or other Partnership Interests shall be issued to the General Partner unless either (a) the additional Partnership Interests are issued in connection with the grant, award, or issuance of shares of the General Partner pursuant to Section 4.3.D below, which shares have designations, preferences, and other rights (except voting rights) such that the economic interests attributable to such shares are substantially similar to the designations, preferences and other rights of the additional Partnership Interests issued to the General Partner in accordance with this Section 4.3.C, or (b) the additional Partnership Interests are issued to all Partners holding Partnership Interests in the same class in proportion to their respective Percentage Interests in such class. In the event that the Partnership issues additional Partnership Interests pursuant to this Section 4.3.C, the General Partner shall make such revisions to this Agreement (including but not limited to the revisions described in Section 5.4, Section 6.2.B, and Section 8.6) as it determines are necessary to reflect the issuance of such additional Partnership Interests.

D. Issuance of REIT Shares or Other Securities by the General
Partner. The General Partner shall not issue any additional REIT Shares (other than REIT Shares issued pursuant to Section 8.6 hereof or pursuant to a dividend or distribution (including any stock split) of REIT Shares to all of its stockholders), other shares of capital stock of the General Partner or New Securities unless the General Partner shall make a Capital Contribution of the net proceeds from the issuance of such additional REIT Shares, other shares of capital stock or New Securities, as the case may be, and from the exercise of the rights contained in such additional New Securities, as the case may be. The General Partner's Capital Account shall be increased by the amount of cash so contributed.

E. Percentage Interest Adjustments in the Case of Capital
Contributions for Partnership Units. Upon the acceptance of additional Capital Contributions in exchange for Partnership Units, the Percentage Interest related thereto shall be equal to a fraction, the numerator of which is equal to the amount of cash and the Agreed Value of the Property contributed as of the Business Day immediately preceding the date on which the additional

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Capital Contributions are made (an "Adjustment Date") and the denominator of which is equal to the sum of (i) the Deemed Value of the Partnership Interests of such class (computed as of the Business Day immediately preceding the Adjustment Date) and (ii) the aggregate amount of additional Capital Contributions contributed to the Partnership on such Adjustment Date in respect of such class of Partnership Interests. The Percentage Interest of each other Partner holding Partnership Interests of such class not making a full pro rata

Capital Contribution shall be adjusted to equal a fraction, the numerator of which is equal to the sum of (i) the Deemed Partnership Interest Value of such Limited Partner of such class (computed as of the Business Day immediately preceding the Adjustment Date) and (ii) the amount of additional Capital Contributions made by such Partner to the Partnership in respect of such class of Partnership Interests as of such Adjustment Date, and the denominator of which is equal to the sum of (i) the Deemed Value of the Partnership Interests of such class (computed as of the Business Day immediately preceding the Adjustment Date), plus (ii) the aggregate amount of additional Capital

Contributions contributed to the Partnership on such Adjustment Date in respect of such class. Notwithstanding the foregoing, solely for purposes of calculating a Partner's Percentage Interest pursuant to this Section 4.3.E, cash Capital Contributions by the General Partner will be deemed to equal the cash contributed by the General Partner plus, in the case of cash contributions funded by an offering of any capital stock of the General Partner, the offering costs attributable to the cash contributed to the Partnership. The General Partner shall promptly give each Partner written notice of its Percentage Interest, as adjusted.

Section 4.4 Stock Incentive Plan

If at any time or from time to time the General Partner sells or issues REIT Shares pursuant to any Stock Incentive Plan, the General Partner shall contribute any proceeds therefrom to the Partnership as an additional Capital Contribution and shall receive an amount of additional Partnership Units equal to the number of REIT Shares so sold or issued. The General Partner's Capital Account shall be increased by the amount of cash so contributed.

Section 4.5 Other Contribution Provisions

In the event that any Partner is admitted to the Partnership and is given a Capital Account in exchange for services rendered to the Partnership, such transaction shall be treated by the Partnership and the affected Partner as if the Partnership had compensated such Partner in cash, and the Partner had contributed such cash to the capital of the Partnership. In addition, with the consent of the General Partner, one or more Limited Partners may enter into contribution agreements with the Partnership which have the effect of providing a guarantee of certain obligations of the Partnership.

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ARTICLE 5
DISTRIBUTIONS

Section 5.1 Requirement and Characterization of Distributions

The General Partner shall cause the Partnership to distribute quarterly all, or such portion as the General Partner may in its discretion determine, of Available Cash generated by the Partnership during such quarter to the Partners who are Partners on the Partnership Record Date with respect to such quarter, (1) first, with respect to any Partnership Interests that are entitled to any preference in distribution, in accordance with the rights of such class of Partnership Interests (and within such class, pro rata in proportion to the respective Percentage Interests on such Partnership Record Date), and, (2) second, with respect to Partnership Interests that are not entitled to any preference in distribution, pro rata to each such class in accordance with the terms of such class (and within each such class, pro rata in proportion with the respective Percentage Interests on such Partnership Record Date). Unless otherwise expressly provided for herein or in an agreement at the time a new class of Partnership Interests is created in accordance with Article 4 hereof, no Partnership Interest shall be entitled to a distribution in preference to any other Partnership Interest. The General Partner shall take such reasonable efforts, as determined by it in its sole and absolute discretion and consistent with its qualification as a REIT, to cause the Partnership to distribute sufficient amounts to enable the General Partner to pay stockholder dividends that will (a) satisfy the requirements for qualifying as a REIT under the Code and Regulations ("REIT Requirements"), and (b) avoid any federal income or excise tax liability of the General Partner.

Section 5.2 Distributions in Kind

No right is given to any Partner to demand and receive property other than cash. The General Partner may determine, in its sole and absolute discretion, to make a distribution in kind to the Partners of Partnership assets, and such assets shall be distributed in such a fashion as to ensure that the fair market value is distributed and allocated in accordance with Articles 5, 6 and 10.

Section 5.3 Distributions Upon Liquidation

Proceeds from a Terminating Capital Transaction shall be distributed to the Partners in accordance with Section 13.2.

Section 5.4 Distributions to Reflect Issuance of Additional Partnership Interests. In the event that the Partnership issues additional Partnership Interests to the General Partner or any Additional Limited Partner pursuant to Section 4.3.C or 4.4 hereof, the General Partner shall make such revisions to this Article 5 as it determines are necessary to reflect the issuance of such additional Partnership Interests.

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ARTICLE 6
ALLOCATIONS

Section 6.1 Timing and Amount of Allocations of Net Income and Net Loss

Net Income and Net Loss of the Partnership shall be determined and allocated with respect to each fiscal year of the Partnership as of the end of each such year. Subject to the other provisions of this Article 6, an allocation to a Partner of a share of Net Income or Net Loss shall be treated as an allocation of the same share of each item of income, gain, loss or deduction that is taken into account in computing Net Income or Net Loss.

Section 6.2 General Allocations

A. In General. Except as otherwise provided in this Article 6, Net Income and Net Loss shall be allocated to each of the Partners holding the same class of Partnership Interests in accordance with their respective Percentage Interest of such class.

B. Allocations to Reflect Issuance of Additional Partnership
Interests. In the event that the Partnership issues additional Partnership Interests to the General Partner or any Additional Limited Partner pursuant to
Section 4.3 or 4.4 hereof, the General Partner shall make such revisions to this
Section 6.2 as it determines are necessary to reflect the terms of the issuance of such additional Partnership Interests, including making preferential allocations to certain classes of Partnership Interests.

Section 6.3 Additional Allocation Provisions

Notwithstanding the foregoing provisions of this Article 6:

A. Regulatory Allocations.

(i) Minimum Gain Chargeback. Except as otherwise provided in Regulations Section 1.704-2(f), notwithstanding the provisions of Section 6.2 of the Agreement, or any other provision of this Article 6, if there is a net decrease in Partnership Minimum Gain during any fiscal year, each Partner shall be specially allocated items of Partnership income and gain for such year (and, if necessary, subsequent years) in an amount equal to such Partner's share of the net decrease in Partnership Minimum Gain, as determined under Regulations Section 1.704-2(g). Allocations pursuant to the previous sentence shall be made in proportion to the respective amounts required to be allocated to each Partner pursuant thereto. The items to be allocated shall be determined in accordance with Regulations Sections 1.704-2(f)(6) and 1.704-2(j)(2). This Section 6.3.A(i) is intended to qualify as a "minimum gain chargeback" within the meaning of Regulation
Section 1.704-2(f) which shall be controlling in the event of a conflict between such Regulation and this Section 6.3.A(i).

(ii) Partner Minimum Gain Chargeback. Except as otherwise provided in Regulations Section 1.704-2(i)(4), and notwithstanding the provisions of Section 6.2

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of the Agreement, or any other provision of this Article 6 (except
Section 6.3.A(i)), if there is a net decrease in Partner Minimum Gain attributable to a Partner Nonrecourse Debt during any fiscal year, each Partner who has a share of the Partner Minimum Gain attributable to such Partner Nonrecourse Debt, determined in accordance with Regulations Section 1.704-2(i)(5), shall be specially allocated items of Partnership income and gain for such year (and, if necessary, subsequent years) in an amount equal to such Partner's share of the net decrease in Partner Minimum Gain attributable to such Partner Nonrecourse Debt, determined in accordance with Regulations Section 1.704-2(i)(4). Allocations pursuant to the previous sentence shall be made in proportion to the respective amounts required to be allocated to each General Partner and Limited Partner pursuant thereto. The items to be so allocated shall be determined in accordance with Regulations Sections 1.704-2(i)(4) and 1.704-2(j)(2). This
Section 6.3.A(ii) is intended to qualify as a "chargeback of partner nonrecourse debt minimum gain" within the meaning of Regulation Section 1.704-2(i) which shall be controlling in the event of a conflict between such Regulation and this Section 6.3.A(ii).

(iii) Nonrecourse Deductions and Partner Nonrecourse Deductions. Any Nonrecourse Deductions for any fiscal year shall be specially allocated to the Partners in accordance with their Percentage Interests. Any Partner Nonrecourse Deductions for any fiscal year shall be specially allocated to the Partner(s) who bears the economic risk of loss with respect to the Partner Nonrecourse Debt to which such Partner Nonrecourse Deductions are attributable, in accordance with Regulations Sections 1.704-2(b)(4) and 1.704-2(i).

(iv) Qualified Income Offset. If any Partner unexpectedly receives an adjustment, allocation or distribution described in Regulations
Section 1.704-1(b)(2)(ii)(d)(4), (5) or (6), items of Partnership income and gain shall be allocated, in accordance with Regulations Section 1.704-
1(b)(2)(ii)(d), to the Partner in an amount and manner sufficient to eliminate, to the extent required by such Regulations, the Adjusted Capital Account Deficit of the Partner as quickly as possible provided that an allocation pursuant to this Section 6.3.A(iv) shall be made if and only to the extent that such Partner would have an Adjusted Capital Account Deficit after all other allocations provided in this Article 6 have been tentatively made as if this Section 6.3.A(iv) were not in the Agreement. It is intended that this Section 6.3.A(iv) qualify and be construed as a "qualified income offset" within the meaning of Regulations 1.704-
1(b)(2)(ii)(d), which shall be controlling in the event of a conflict between such Regulations and this Section 6.3.A(iv).

(v) Gross Income Allocation. In the event any Partner has a deficit Capital Account at the end of any fiscal year which is in excess of the sum of (1) the amount (if any) such Partner is obligated to restore to the Partnership, and (2) the amount such Partner is deemed to be obligated to restore pursuant to Regulations Section 1.704-1(b)(2)(ii)(c) or the penultimate sentences of Regulations Sections 1.704-2(g)(1) and 1.704-
2(i)(5), each such Partner shall be specially allocated items of Partnership income and gain in the amount of such excess as quickly as possible, provided that an allocation pursuant to this Section 6.3.A(v) shall be made if and only to the extent that such Partner

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would have a deficit Capital Account in excess of such sum after all other allocations provided in this Article 6 have been tentatively made as if this Section 6.3.A(v) and Section 6.3.A(iv) were not in the Agreement.

(vi) Limitation on Allocation of Net Loss. To the extent any allocation of Net Loss would cause or increase an Adjusted Capital Account Deficit as to any Partner, such allocation of Net Loss shall be reallocated among the other Partners in accordance with their respective Percentage Interests, subject to the limitations of this Section 6.3.A(vi).

(vii) Section 754 Adjustment. To the extent an adjustment to the adjusted tax basis of any Partnership asset pursuant to Code Section 734(b) or Code Section 743(b) is required, pursuant to Regulations Section 1.704-1(b)(2)(iv)(m)(2) or Regulations Section 1.704-1(b)(2)(iv)(m)(4), to be taken into account in determining Capital Accounts as the result of a distribution to a Partner in complete liquidation of his interest in the Partnership, the amount of such adjustment to the Capital Accounts shall be treated as an item of gain (if the adjustment increases the basis of the asset) or loss (if the adjustment decreases such basis) and such gain or loss shall be specially allocated to the Partners in accordance with their interests in the Partnership in the event that Regulations Section 1.704- 1(b)(2)(iv)(m)(2) applies, or to the Partners to whom such distribution was made in the event that Regulations Section 1.704-1(b)(2)(iv)(m)(4) applies.

(viii) Curative Allocation. The allocations set forth in Sections 6.3.A(i), (ii), (iii), (iv), (v), (vi), and (vii) (the "Regulatory Allocations") are intended to comply with certain regulatory requirements, including the requirements of Regulations Sections 1.704-1(b) and 1.704-2. Notwithstanding the provisions of Sections 6.1 and 6.2, the Regulatory Allocations shall be taken into account in allocating other items of income, gain, loss and deduction among the Partners so that, to the extent possible, the net amount of such allocations of other items and the Regulatory Allocations to each Partner shall be equal to the net amount that would have been allocated to each such Partner if the Regulatory Allocations had not occurred.

B. For purposes of determining a Partner's proportional share of the "excess nonrecourse liabilities" of the Partnership within the meaning of Regulations Section 1.752-3(a)(3), each Partner's interest in Partnership profits shall be such Partner's Percentage Interest.

Section 6.4 Tax Allocations

A. In General. Except as otherwise provided in this Section 6.4, for income tax purposes each item of income, gain, loss and deduction (collectively, "Tax Items") shall be allocated among the Partners in the same manner as its correlative item of "book" income, gain, loss or deduction is allocated pursuant to Sections 6.2 and 6.3.

B. Allocations Respecting Section 704(c) Revaluations. Notwithstanding Section 6.4.A, Tax Items with respect to Partnership property that is contributed to the

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Partnership by a Partner shall be shared among the Partners for income tax purposes pursuant to Regulations promulgated under Section 704(c) of the Code, so as to take into account the variation, if any, between the basis of the property to the Partnership and its initial Gross Asset Value. With respect to Partnership property that is initially contributed to the Partnership upon its formation pursuant to Section 4.1, such variation between basis and initial Gross Asset Value shall be taken into account under the "traditional method" as described in Regulations Section 1.704-3(b). With respect to properties subsequently contributed to the Partnership, the Partnership shall account for such variation under any method approved under Section 704(c) of the Code and the applicable regulations as chosen by the General Partner. In the event the Gross Asset Value of any Partnership asset is adjusted pursuant to subparagraph
(b) of the definition of Gross Asset Value (provided in Article 1 of this Agreement), subsequent allocations of Tax Items with respect to such asset shall take account of the variation, if any, between the adjusted basis of such asset and its Gross Asset Value in the same manner as under Section 704(c) of the Code and the applicable regulations consistent with the requirements of Regulations
Section 1.704-1(b)(2)(iv)(g) using any method approved under 704(c) of the Code and the applicable regulations as chosen by the General Partner.

ARTICLE 7
MANAGEMENT AND OPERATIONS OF BUSINESS

Section 7.1 Management

A. Except as otherwise expressly provided in this Agreement, all management powers over the business and affairs of the Partnership are exclusively vested in the General Partner, and no Limited Partner shall have any right to participate in or exercise control or management power over the business and affairs of the Partnership. The General Partner may not be removed by the Limited Partners with or without cause, except with the consent of the General Partner. In addition to the powers now or hereafter granted a general partner of a limited partnership under the Act and other applicable law or which are granted to the General Partner under any other provision of this Agreement, the General Partner, subject to the other provisions hereof including Section 7.3, shall have full power and authority to do all things deemed necessary or desirable by it to conduct the business of the Partnership, to exercise all powers set forth in Section 3.2 hereof and to effectuate the purposes set forth in Section 3.1 hereof, including, without limitation:

(1) the making of any expenditures, the lending or borrowing of money (including, without limitation, making prepayments on loans and borrowing money to permit the Partnership to make distributions to its Partners in such amounts as will permit the General Partner (so long as the General Partner has determined to qualify as a REIT) to avoid the payment of any federal income tax (including, for this purpose, any excise tax pursuant to Section 4981 of the Code) and to make distributions to its stockholders sufficient to permit the General Partner to maintain REIT status), the assumption or guarantee of, or other contracting for, indebtedness and other liabilities, the issuance of evidences of

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indebtedness (including the securing of same by mortgage, deed of trust or other lien or encumbrance on all or any of the Partnership's assets) and the incurring of any obligations it deems necessary for the conduct of the activities of the Partnership;

(2) the making of tax, regulatory and other filings, or rendering of periodic or other reports to governmental or other agencies having jurisdiction over the business or assets of the Partnership;

(3) subject to the provisions of Section 7.3.D hereof, the acquisition, disposition, mortgage, pledge, encumbrance, hypothecation or exchange of any assets of the Partnership or the merger or other combination of the Partnership with or into another entity;

(4) the mortgage, pledge, encumbrance or hypothecation of all or any assets of the Partnership, and the use of the assets of the Partnership (including, without limitation, cash on hand) for any purpose consistent with the terms of this Agreement and on any terms it sees fit, including, without limitation, the financing of the conduct or the operations of the General Partner or the Partnership, the lending of funds to other Persons (including, without limitation, the General Partner (if necessary to permit the financing or capitalization of a subsidiary of the General Partner or the Partnership) and any Subsidiaries of the Partnership) and the repayment of obligations of the Partnership, any of its Subsidiaries and any other Person in which it has an equity investment;

(5) the negotiation, execution, and performance of any contracts, leases, conveyances or other instruments that the General Partner considers useful or necessary to the conduct of the Partnership's operations or the implementation of the General Partner's powers under this Agreement;

(6) the distribution of Partnership cash or other Partnership assets in accordance with this Agreement;

(7) the selection and dismissal of employees of the Partnership (including, without limitation, employees having titles such as "president," "vice president," "secretary" and "treasurer"), and agents, outside attorneys, accountants, consultants and contractors of the Partnership, the determination of their compensation and other terms of employment or hiring, including waivers of conflicts of interest and the payment of their expenses and compensation out of the Partnership's assets;

(8) the maintenance of such insurance for the benefit of the Partnership and the Partners as it deems necessary or appropriate;

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(9) the formation of, or acquisition of an interest in, and the contribution of property to, any further limited or general partnerships, joint ventures or other relationships that it deems desirable (including, without limitation, the acquisition of interests in, and the contributions of property to any Subsidiary and any other Person in which it has an equity investment from time to time); provided that, as long as the General Partner has determined to continue to qualify as a REIT, the Partnership may not engage in any such formation, acquisition or contribution that would cause the General Partner to fail to qualify as a REIT;

(10) the control of any matters affecting the rights and obligations of the Partnership, including the conduct of litigation and the incurring of legal expense and the settlement of claims and litigation, and the indemnification of any Person against liabilities and contingencies to the extent permitted by law;

(11) the undertaking of any action in connection with the Partnership's direct or indirect investment in any Person (including, without limitation, contributing or loaning Partnership funds to, incurring indebtedness on behalf of, or guarantying the obligations of any such Persons);

(12) subject to the other provisions in this Agreement, the determination of the fair market value of any Partnership property distributed in kind using such reasonable method of valuation as it may adopt, provided that such methods are otherwise consistent with requirements of this Agreement;

(13) the management, operation, leasing, landscaping, repair, alteration, demolition or improvement of any real property or improvements owned by the Partnership or any Subsidiary of the Partnership or any Person in which the Partnership has made a direct or indirect equity investment;

(14) holding, managing, investing and reinvesting cash and other assets of the Partnership;

(15) the collection and receipt of revenues and income of the Partnership;

(16) the exercise, directly or indirectly through any attorney-in-fact acting under a general or limited power of attorney, of any right, including the right to vote, appurtenant to any asset or investment held by the Partnership;

(17) the exercise of any of the powers of the General Partner enumerated in this Agreement on behalf of or in connection with any Subsidiary of the Partnership or any other Person in which the Partnership has a direct or indirect interest, or jointly with any such Subsidiary or other Person;

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(18) the exercise of any of the powers of the General Partner enumerated in this Agreement on behalf of any Person in which the Partnership does not have an interest, pursuant to contractual or other arrangements with such Person; and

(19) the making, execution and delivery of any and all deeds, leases, notes, deeds to secure debt, mortgages, deeds of trust, security agreements, conveyances, contracts, guarantees, warranties, indemnities, waivers, releases or legal instruments or other agreements in writing necessary or appropriate in the judgment of the General Partner for the accomplishment of any of the powers of the General Partner enumerated in this Agreement.

B. Each of the Limited Partners agrees that the General Partner is authorized to execute, deliver and perform the above-mentioned agreements and transactions on behalf of the Partnership without any further act, approval or vote of the partners, notwithstanding any other provisions of this Agreement (except as provided in Section 7.3), the Act or any applicable law, rule or regulation. The execution, delivery or performance by the General Partner or the Partnership of any agreement authorized or permitted under this Agreement shall not constitute a breach by the General Partner of any duty that the General Partner may owe the Partnership or the Limited Partners or any other Persons under this Agreement or of any duty stated or implied by law or equity.

C. At all times from and after the date hereof, the General Partner may cause the Partnership to obtain and maintain (i) casualty, liability and other insurance (including, without limitation, earthquake insurance) on the properties of the Partnership and (ii) liability insurance for the Indemnities hereunder.

D. At all times from and after the date hereof, the General Partner may cause the Partnership to establish and maintain working capital and other reserves in such amounts as the General Partner, in it sole and absolute discretion, deems appropriate and reasonable from time to time.

E. In exercising its authority under this Agreement, the General Partner may, but, other than as set forth in the following sentence and to
Section 11.2.D, shall be under no obligation to, take into account the tax consequences to any Partner (including the General Partner) of any action taken by the General Partner. The General Partner, on behalf of the Partnership, shall use commercially reasonable efforts to cooperate with the Limited Partners to minimize any taxes payable in connection with any repayment, refinancing, replacement or restructuring of Debt, or any sale, exchange or any other disposition of assets, of the Partnership. The General Partner and the Partnership shall not have liability to a Limited Partner under any circumstances as a result of an income tax liability incurred by such Limited Partner as a result of an action (or inaction) by the General Partner pursuant to its authority under this Agreement.

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F. Except as otherwise provided herein, to the extent the duties of the General Partner require expenditures of funds to be paid to third parties, the General Partner shall not have any obligations hereunder except to the extent that Partnership funds are reasonably available to it for the performance of such duties, and nothing herein contained shall be deemed to authorize or require the General Partner, in its capacity as such, to expend its individual funds for payment to third parties or to undertake any individual liability or obligation on behalf of the Partnership.

Section 7.2 Certificate of Limited Partnership

To the extent that such action is determined by the General Partner to be reasonable and necessary or appropriate, the General Partner shall file amendments to and restatements of the Certificate and do all the things to maintain the Partnership as a limited partnership (or a partnership in which the limited partners have limited liability) under the laws of the State of Delaware and to maintain the Partnership's qualification to do business as a foreign limited partnership in each other state, the District of Columbia or other jurisdiction, in which the Partnership may elect to do business or own property. Subject to the terms of Section 8.5.A(4) hereof, the General Partner shall not be required, before or after filing, to deliver or mail a copy of the Certificate or any amendment thereto to any Limited Partner. The General Partner shall use all reasonable efforts to cause to be filed such other certificates or documents as may be reasonable and necessary or appropriate for the formation, continuation, qualification and operation of a limited partnership (or a partnership in which the limited partners have limited liability) in the State of Delaware, and any other state, or the District of Columbia or other jurisdiction, in which the Partnership may elect to do business or own property.

Section 7.3 Restrictions on General Partner's Authority

A. The General Partner may not take any action in contravention of this Agreement, including, without limitation:

(1) take any action that would make it impossible to carry on the ordinary business of the Partnership, except as otherwise provided in this Agreement;

(2) possess Partnership property, or assign any rights in specific Partnership property, for other than a Partnership purpose except as otherwise provided in this Agreement;

(3) admit a Person as a Partner, except as otherwise provided in this Agreement;

(4) perform any act that would subject a Limited Partner to liability as a general partner in any jurisdiction or any other liability except as provided herein or under the Act; or

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(5) enter into any contract, mortgage, loan or other agreement that prohibits or restricts, or has the effect of prohibiting or restricting, the ability of a Limited Partner to exercise its rights to a Redemption in full, except with the written consent of such Limited Partner.

B. The General Partner shall not, without the prior Consent of the Partners, undertake, on behalf of the Partnership, any of the following actions or enter into any transaction which would have the effect of such transactions:

(1) except as provided in Section 7.3.E, amend, modify or terminate this Agreement other than to reflect the admission, substitution, termination or withdrawal of partners pursuant to Article 12 hereof;

(2) make a general assignment for the benefit of creditors or appoint or acquiesce in the appointment of a custodian, receiver or trustee for all or any part of the assets of the Partnership;

(3) institute any proceeding for bankruptcy on behalf of the Partnership; or

(4) confess a judgment against the Partnership;

C. The General Partner shall not, without the prior Consent of the Super Majority Limited Partners, undertake, on behalf of the Partnership, any of the following actions or enter into any transaction which would have the effect of such transactions:

(1) approve or acquiesce to the transfer of the Partnership Interest of the General Partner to any Person other than the Partnership; or

(2) admit into the Partnership any Additional or Substitute General Partners.

D. If the aggregate Limited Partnership Interests of all Limited Partners represents 5.0% or more of the aggregate Partnership Interests, the General Partner shall not, without the prior Consent of the Limited Partners, undertake, on behalf of the Partnership, any of the following actions or enter into any transaction which would have the effect of such transactions:

(1) dissolve the Partnership, or

(2) prior to the seventh anniversary of the date of this Agreement, sell any of the property listed on Exhibit G,

in each case other than incident to a transaction pursuant to Section 11.2.B or
Section 11.2.C.

E. Notwithstanding Sections 7.3.B, 7.3.C and 7.3.D hereof, but subject to Section 7.3.F hereof, the General Partner shall have the power, without the Consent of the

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Limited Partners, to amend this Agreement as may be required to facilitate or implement any of the following purposes:

(1) to add to the obligations of the General Partner or surrender any right or power granted to the General Partner or any Affiliate of the General Partner for the benefit of the Limited Partners;

(2) to reflect the issuance of additional Partnership Interests pursuant to Sections 4.3.C and 4.4 or the admission, substitution, termination, or withdrawal of Partners in accordance with this Agreement;

(3) to reflect a change that is of an inconsequential nature and does not adversely affect the Limited Partners in any material respect, or to cure any ambiguity in, correct or supplement any provision in, or make other changes with respect to matters arising under, this Agreement that will not be inconsistent with law or with the provisions of this Agreement;

(4) to satisfy any requirements, conditions, or guidelines contained in any order, directive, opinion, ruling or regulation of a federal or state agency or contained in federal or state law;

(5) to reflect such changes as are reasonably necessary for the General Partner to maintain its status as a REIT, including changes which may be necessitated due to a change in applicable law (or an authoritative interpretation thereof) or a ruling of the IRS; and

(6) to modify, as set forth in the definition of "Capital Account," the manner in which Capital Accounts are computed.

The General Partner will provide notice to the Limited Partners when any action under this Section 7.3.E is taken.

F. Notwithstanding Sections 7.3.B, 7.3.C, 7.3.D and 7.3.E hereof, this Agreement shall not be amended, and no action may be taken by the General Partner, without the Consent of each Partner adversely affected if such amendment or action would (i) convert a Limited Partner's interest in the Partnership into a general partner's interest (except as the result of the General Partner acquiring such interest), (ii) modify the limited liability of a Limited Partner, (iii) alter rights of the Partner to receive distributions pursuant to Article 5 or Section 13.2.A(4), or the allocations specified in Article 6 (except as permitted pursuant to Section 4.3 and Section 7.3.E(2) hereof), (iv) alter or modify the rights to a Redemption or the REIT Shares Amount as set forth in Section 8.6, and related definitions hereof or (v) amend this Section 7.3.F. Further, no amendment may alter the restrictions on the General Partner's authority set forth elsewhere in this Section 7.3 without the Consent specified in such section. In addition, notwithstanding Sections 7.3.B, 7.3.C, 7.3.D and 7.3.E hereof, Section 11.2 of this Agreement shall not be amended, and no action in contravention of Section 11.2 hereof shall be taken, without the Consent of the Limited Partners.

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Section 7.4 Reimbursement of the General Partner

A. Except as provided in this Section 7.4 and elsewhere in this Agreement (including the provisions of Articles 5 and 6 regarding distributions, payments and allocations to which it may be entitled), the General Partner shall not be compensated for its services as general partner of the Partnership.

B. Subject to Section 15.11, the General Partner shall be reimbursed on a monthly basis, or such other basis as the General Partner may determine in its sole and absolute discretion, for all expenses it incurs relating to the ownership of interests in and operation of, or for the benefit of, the Partnership. The Limited Partners acknowledge that the General Partner's sole business is the ownership of interests in and operation of the Partnership and that such expenses are incurred for the benefit of the Partnership; provided that, the General Partner shall not be reimbursed for expenses it incurs

relating to the organization of the Partnership and the General Partner or the initial public offering or subsequent public offerings of REIT Shares, other shares of capital stock or Funding Debt by the General Partner, but shall be reimbursed for expenses it incurs with respect to any other issuance of additional Partnership Interests pursuant to the provisions hereof. Such reimbursements shall be in addition to any reimbursement to the General Partner as a result of indemnification pursuant to Section 7.7 hereof.

C. If and to the extent any reimbursements to the General Partner pursuant to this Section 7.4 constitute gross income of the General Partner (as opposed to the repayment of advances made by the General Partner on behalf of the Partnership), such amounts shall constitute guaranteed payments within the meaning of Section 707(c) of the Code, shall be treated consistently therewith by the Partnership and all Partners, and shall not be treated as distributions for purposes of computing the Partners' Capital Accounts.

Section 7.5 Outside Activities of the General Partner

A. Except in connection with a transaction authorized in Section 11.2 hereof, without the Consent of the Limited Partners, the General Partner shall not, directly or indirectly, enter into or conduct any business, other than in connection with the ownership, acquisition and disposition of Partnership Interests as a General Partner and the management of the business of the Partnership, its operation as a public reporting company with a class (or classes) of securities registered under the Securities Exchange Act, its operation as a REIT and such activities as are incidental to the same. Without the Consent of the Limited Partners, the General Partner shall not, directly or indirectly, participate in or otherwise acquire any interest in any real or personal property, except its General Partner Interest, its minority interest in any Subsidiary Partnership(s) (held directly or indirectly through a Qualified REIT Subsidiary) that the General Partner holds in order to maintain such Subsidiary Partnership's status as a partnership, and such bank accounts, similar instruments or other short-term investments as it deems necessary to carry out its responsibilities contemplated under this Agreement and the Charter. Any Limited Partner Interests acquired by the General Partner, whether pursuant to exercise by a Limited Partner of its right of Redemption, or otherwise, shall be automatically converted into a General Partner Interest comprised of an identical number of Partnership Units of the same class. If, at any

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time, the General Partner acquires material assets (other than on behalf of the Partnership) the definition of "REIT Shares Amount" shall be adjusted, as reasonably agreed to by the General Partner and the other Limited Partners, to reflect the relative Fair Market Value of a share of capital stock of the General Partner relative to the Deemed Partnership Interest Value of the related Partnership Unit. The General Partner's General Partner Interest in the Partnership, its minority interest in any Subsidiary Partnership(s) (held directly or indirectly through a Qualified REIT Subsidiary) that the General Partner holds in order to maintain such Subsidiary Partnership's status as a partnership, and interests in such short-term liquid investments, bank accounts or similar instruments as the General Partner deems necessary to carry out its responsibilities contemplated under this Agreement and the Charter are interests which the General Partner is permitted to acquire and hold for purposes of this
Section 7.5.A.

B. In the event the General Partner exercises its rights under the Charter to purchase REIT Shares, then the General Partner shall cause the Partnership to purchase from it a number of Partnership Units of the appropriate class as determined based on the REIT Shares Amount equal to the number of REIT Shares so purchased on the same terms that the General Partner purchased such REIT Shares.

Section 7.6 Contracts with Affiliates

A. The Partnership may lend or contribute to Persons in which it has an equity investment, and such Persons may borrow funds from the Partnership, on terms and conditions established in the sole and absolute discretion of the General Partner. The foregoing authority shall not create any right or benefit in favor of any Person.

B. Except as provided in Section 7.5.A, the Partnership may transfer assets to joint ventures, other partnerships, corporations or other business entities in which it is or thereby becomes a participant upon such terms and subject to such conditions consistent with this Agreement and applicable law.

C. The General Partner, in its sole and absolute discretion and without the approval of the Limited Partners, may propose and adopt on behalf of the Partnership employee benefit plans funded by the Partnership for the benefit of employees of the General Partner, the Partnership, Subsidiaries of the Partnership or any Affiliate of any of them in respect of services performed, directly or indirectly, for the benefit of the Partnership, the General Partner, or any of the Partnership's Subsidiaries. The General Partner also is expressly authorized to cause the Partnership to issue to it Partnership Units corresponding to REIT Shares issued by the General Partner pursuant to its Stock Incentive Plan or any similar or successor plan and to repurchase such Partnership Units from the General Partner to the extent necessary to permit the General Partner to repurchase such REIT Shares in accordance with such plan.

D. The General Partner is expressly authorized to enter into, in the name and on behalf of the Partnership, a right of first opportunity arrangement and other conflict avoidance agreements with various Affiliates of the Partnership and the General Partner, on such terms as the General Partner, in its sole and absolute discretion, believes are advisable.

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Section 7.7 Indemnification

A. The Partnership shall indemnify an Indemnitee from and against any and all losses, claims, damages, liabilities, joint or several, expenses (including legal fees and expenses), judgments, fines, settlements, and other amounts arising from any and all claims, demands, actions, suits or proceedings, civil, criminal, administrative or investigative, that relate to the operations of the Partnership as set forth in this Agreement in which any Indemnitee may be involved, or is threatened to be involved, as a party or otherwise, unless it is established that: (i) the act or omission of the Indemnitee was material to the matter giving rise to the proceeding and either was committed in bad faith or was the result of active and deliberate dishonesty; (ii) the Indemnitee actually received an improper personal benefit in money, property or services; or (iii) in the case of any criminal proceeding, the Indemnitee had reasonable cause to believe that the act or omission was unlawful. Without limitation, the foregoing indemnity shall extend to any liability of any Indemnitee, pursuant to a loan guaranty or otherwise, for any indebtedness of the Partnership or any Subsidiary of the Partnership (including, without limitation, any indebtedness which the Partnership or any Subsidiary of the Partnership has assumed or taken subject to), and the General Partner is hereby authorized and empowered, on behalf of the Partnership, to enter into one or more indemnity agreements consistent with the provisions of this Section 7.7 in favor of any Indemnitee having or potentially having liability for any such indebtedness. The termination of any proceeding by judgment, order or settlement does not create a presumption that the Indemnitee did not meet the requisite standard of conduct set forth in this Section 7.7.A. The termination of any proceeding by conviction or upon a plea of nolo contendere or its equivalent, or any entry of an order of probation prior to judgment, creates a rebuttable presumption that the Indemnitee acted in a manner contrary to that specified in this Section 7.7.A. Any indemnification pursuant to this Section 7.7 shall be made only out of the assets of the Partnership.

B. Reasonable expenses incurred by an Indemnitee who is a party to a proceeding may be paid or reimbursed by the Partnership in advance of the final disposition of the proceeding upon receipt by the Partnership of (i) a written affirmation by the Indemnitee of the Indemnitee's good faith belief that the standard of conduct necessary for indemnification by the Partnership as authorized in Subparagraph A of this Section 7.7 has been met, and (ii) a written undertaking by or on behalf of the Indemnitee to repay the amount if it shall ultimately be determined that the standard of conduct has not been met.

C. The indemnification provided by this Section 7.7 shall be in addition to any other rights to which an Indemnitee or any other Person may be entitled under any agreement, pursuant to any vote of the Partners, as a matter of law or otherwise, and shall continue as to an Indemnitee who has ceased to serve in such capacity.

D. The Partnership may purchase and maintain insurance, on behalf of the Indemnitees and such other Persons as the General Partner shall determine, against any liability that may be asserted against or expenses that may be incurred by any such Person in connection with the Partnership's activities, regardless of whether the Partnership would have the power to indemnify such Person against such liability under the provisions of this Agreement.

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E. For purposes of this Section 7.7, the Partnership shall be deemed to have requested an Indemnitee to serve as fiduciary of an employee benefit plan whenever the performance by it of its duties to the Partnership also imposes duties on, or otherwise involves services by, it to the plan or participants or beneficiaries of the plan; excise taxes assessed on an Indemnitee with respect to an employee benefit plan pursuant to applicable law shall constitute fines within the meaning of Section 7.7; and actions taken or omitted by the Indemnitee with respect to an employee benefit plan in the performance of its duties for a purpose reasonably believed by it to be in the interest of the participants and beneficiaries of the plan shall be deemed to be for a purpose which is not opposed to the best interests of the Partnership.

F. In no event may an Indemnitee subject the Limited Partners to personal liability by reason of the indemnification provisions set forth in this Agreement.

G. An Indemnitee shall not be denied indemnification in whole or in part under this Section 7.7 because the Indemnitee had an interest in the transaction with respect to which the indemnification applies if the transaction was otherwise permitted by the terms of this Agreement.

H. The provisions of this Section 7.7 are for the benefit of the Indemnitees, their heirs, successors, assigns and administrators and shall not be deemed to create any rights for the benefit of any other Persons. Any amendment, modification or repeal of this Section 7.7 or any provision hereof shall be prospective only and shall not in any way affect the limitations on the Partnership's liability to any Indemnitee under this Section 7.7 as in effect immediately prior to such amendment, modification or repeal with respect to claims arising from or relating to matters occurring, in whole or in part, prior to such amendment, modification or repeal, regardless of when such claims may arise or be asserted.

I. If and to the extent any reimbursements to the General Partner pursuant to this Section 7.7 constitute gross income of the General Partner (as opposed to the repayment of advances made by the General Partner on behalf of the Partnership) such amounts shall constitute guaranteed payments within the meaning of Section 707(c) of the Code, shall be treated consistently therewith by the Partnership and all Partners, and shall not be treated as distributions for purposes of computing the Partners' Capital Accounts.

J. Any indemnification hereunder is subject to, and limited by, the provisions of Section 17-108 of the Act.

K. In the event the Partnership is made a party to any litigation or otherwise incurs any loss or expense as a result of or in connection with any Partner's personal obligations or liabilities unrelated to Partnership business, such Partner shall indemnify and reimburse the Partnership for all such loss and expense incurred, including legal fees, and the Partnership Interest of such Partner may be charged therefor. The liability of a Partner under this Section 7.7.K shall not be limited to such Partner's Partnership Interest, but shall be enforceable against such Partner personally.

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Section 7.8 Liability of the General Partner

A. Notwithstanding anything to the contrary set forth in this Agreement, none of the General Partner and any of its officers, directors, agents and employees shall be liable or accountable in damages or otherwise to the Partnership, any Partners or any Assignees, or their successors or assigns, for losses sustained, liabilities incurred or benefits not derived as a result of errors in judgment or mistakes of fact or law or any act or omission if the General Partner acted in good faith.

B. The Limited Partners expressly acknowledge that the General Partner is acting for the benefit of the Partnership, the Limited Partners and the General Partner's stockholders collectively, that the General Partner is under no obligation to give priority to the separate interests of the Limited Partners or the General Partner's stockholders (including, without limitation, the tax consequences to Limited Partners or Assignees or to stockholders) in deciding whether to cause the Partnership to take (or decline to take) any actions and that the General Partner shall not be liable to the Partnership or to any Limited Partner for monetary damages for losses sustained, liabilities incurred, or benefits not derived by Limited Partners in connection with such decisions, provided that the General Partner has acted in good faith.

C. Subject to its obligations and duties as General Partner set forth in Section 7.1.A hereof, the General Partner may exercise any of the powers granted to it by this Agreement and perform any of the duties imposed upon it hereunder either directly or by or through its agents. The General Partner shall not be responsible for any misconduct or negligence on the part of any such agent appointed by it in good faith.

D. Any amendment, modification or repeal of this Section 7.8 or any provision hereof shall be prospective only and shall not in any way affect the limitations on the liability of the General Partner and any of its officers, directors, agents and employees to the Partnership and the Limited Partners under this Section 7.8 as in effect immediately prior to such amendment, modification or repeal with respect to claims arising from or relating to matters occurring, in whole or in part, prior to such amendment, modification or repeal, regardless of when such claims may arise or be asserted.

Section 7.9 Other Matters Concerning the General Partner

A. The General Partner may rely and shall be protected in acting or refraining from acting upon any resolution, certificate, statement, instrument, opinion, report, notice, request, consent, order, bond, debenture, or other paper or document believed by it to be genuine and to have been signed or presented by the proper party or parties.

B. The General Partner may consult with legal counsel, accountants, appraisers, management consultants, investment bankers and other consultants and advisers selected by it, and any act taken or omitted to be taken in reliance upon the opinion of such Persons as to matters which such General Partner reasonably believes to be within such Person's professional or expert competence shall be conclusively presumed to have been done or omitted in good faith and in accordance with such opinion.

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C. The General Partner shall have the right, in respect of any of its powers or obligations hereunder, to act through any of its duly authorized officers and a duly appointed attorney or attorneys-in-fact. Each such attorney shall, to the extent provided by the General Partner in the power of attorney, have full power and authority to do and perform all and every act and duty which is permitted or required to be done by the General Partner hereunder.

D. Notwithstanding any other provisions of this Agreement or any non-mandatory provision of the Act, any action of the General Partner on behalf of the Partnership or any decision of the General Partner to refrain from acting on behalf of the Partnership, undertaken in the good faith belief that such action or omission is necessary or advisable in order (i) to protect the ability of the General Partner to continue to qualify as a REIT or (ii) to avoid the General Partner incurring any taxes under Section 857 or Section 4981 of the Code, is expressly authorized under this Agreement and is deemed approved by all of the Limited Partners.

Section 7.10 Title to Partnership Assets

Title to Partnership assets, whether real, personal or mixed and whether tangible or intangible, shall be deemed to be owned by the Partnership as an entity, and no Partners, individually or collectively, shall have any ownership interest in such Partnership assets or any portion thereof. Title to any or all of the Partnership assets may be held in the name of the Partnership, the General Partner or one or more nominees, as the General Partner may determine, including Affiliates of the General Partner. The General Partner hereby declares and warrants that any Partnership assets for which legal title is held in the name of the General Partner or any nominee or Affiliate of the General Partner shall be deemed held by the General Partner or such nominee or Affiliate for the use and benefit of the Partnership in accordance with the provisions of this Agreement; provided, however, that the General Partner shall use its best efforts to cause beneficial and record title to such assets to be vested in the Partnership as soon as reasonably practicable. All Partnership assets shall be recorded as the property of the Partnership in its books and records, irrespective of the name in which legal title to such Partnership assets is held.

Section 7.11 Reliance by Third Parties

Notwithstanding anything to the contrary in this Agreement, any Person dealing with the Partnership shall be entitled to assume that the General Partner has full power and authority to encumber, sell or otherwise use in any manner any and all assets of the Partnership and to enter into any contracts on behalf of the Partnership, and such Person shall be entitled to deal with the General Partner as if it were the Partnership's sole party in interest, both legally and beneficially. Each Limited Partner hereby waives any and all defenses or other remedies which may be available against such Person to contest, negate or disaffirm any action of the General Partner in connection with any such dealing. In no event shall any Person dealing with the General Partner or its representatives be obligated to ascertain that the terms of this Agreement have been complied with or to inquire into the necessity or expedience of any act or action of the General Partner or its representatives. Each and every certificate, document or other instrument executed on behalf of the Partnership by the General Partner or its

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representatives shall be conclusive evidence in favor of any and every Person relying thereon or claiming thereunder that (i) at the time of the execution and delivery of such certificate, document or instrument, this Agreement was in full force and effect, (ii) the Person executing and delivering such certificate, document or instrument was duly authorized and empowered to do so for and on behalf of the Partnership and (iii) such certificate, document or instrument was duly executed and delivered in accordance with the terms and provisions of this Agreement and is binding upon the Partnership.

ARTICLE 8
RIGHTS AND OBLIGATIONS OF LIMITED PARTNERS

Section 8.1 Limitation of Liability

The Limited Partners shall have no liability under this Agreement except as expressly provided in this Agreement or under the Act.

Section 8.2 Management of Business

No Limited Partner or Assignee (other than the General Partner, any of its Affiliates or any officer, director, employee, general partner, agent or trustee of the General Partner, the Partnership or any of their Affiliates, in their capacity as such) shall take part in the operations, management or control (within the meaning of the Act) of the Partnership's business, transact any business in the Partnership's name or have the power to sign documents for or otherwise bind the Partnership. The transaction of any such business by the General Partner, any of its Affiliates or any officer, director, employee, general partner, agent or trustee of the General Partner, the Partnership or any of their Affiliates, in their capacity as such, shall not affect, impair or eliminate the limitations on the liability of the Limited Partners or Assignees under this Agreement.

Section 8.3 Outside Activities of Limited Partners

Subject to any agreements entered into by a Limited Partner or its Affiliates with the General Partner, Partnership or a Subsidiary, any Limited Partner and any officer, director, employee, agent, trustee, Affiliate or stockholder of any Limited Partner shall be entitled to and may have business interests and engage in business activities in addition to those relating to the Partnership, including business interests and activities in direct competition with the Partnership or that are enhanced by the activities of the Partnership. Neither the Partnership nor any Partners shall have any rights by virtue of this Agreement in any business ventures of any Limited Partner or Assignee. Subject to such agreements, none of the Limited Partners nor any other Person shall have any rights by virtue of this Agreement or the partnership relationship established hereby in any business ventures of any other Person, other than the Limited Partners benefitting from the business conducted by the General Partner, and such other Person shall have no obligation pursuant to this Agreement to offer any interest in any such business ventures to the Partnership, any Limited Partner or any such other Person, even if such opportunity is of

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a character which, if presented to the Partnership, any Limited Partner or such other Person, could be taken by such other Person.

Section 8.4 Return of Capital

Except pursuant to the rights of Redemption set forth in Section 8.6, no Limited Partner shall be entitled to the withdrawal or return of his or her Capital Contribution, except to the extent of distributions made pursuant to this Agreement or upon termination of the Partnership as provided herein. No Limited Partner or Assignee shall have priority over any other Limited Partner or Assignee either as to the return of Capital Contributions, or as otherwise expressly provided in this Agreement, as to profits, losses, distributions or credits.

Section 8.5 Rights of Limited Partners Relating to the Partnership

A. In addition to other rights provided by this Agreement or by the Act, and except as limited by Section 8.5.C hereof, each Limited Partner shall have the right, for a purpose reasonably related to such Limited Partner's interest as a limited partner in the Partnership, upon written demand with a statement of the purpose of such demand and at the Partnership's expense:

(1) to obtain a copy of the most recent annual and quarterly reports filed with the Securities and Exchange Commission by the General Partner pursuant to the Securities Exchange Act, and each communication sent to the stockholders of the General Partner;

(2) to obtain a copy of the Partnership's federal, state and local income tax returns for each Partnership Year;

(3) to obtain a current list of the name and last known business, residence or mailing address of each Partner;

(4) to obtain a copy of this Agreement and the Certificate and all amendments thereto, together with executed copies of all powers of attorney pursuant to which this Agreement, the Certificate and all amendments thereto have been executed; and

(5) to obtain true and full information regarding the amount of cash and a description and statement of any other property or services contributed by each Partner and which each Partner has agreed to contribute in the future, and the date on which each became a Partner.

B. The Partnership shall notify each Limited Partner in writing of any adjustment made in the calculation of the REIT Shares Amount within 10 Business Days of the date such change becomes effective.

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C. Notwithstanding any other provision of this Section 8.5, the General Partner may keep confidential from the Limited Partners, for such period of time as the General Partner determines in its sole and absolute discretion to be reasonable, any information that (i) the General Partner believes to be in the nature of trade secrets or other information the disclosure of which the General Partner in good faith believes is not in the best interests of the Partnership or (ii) the Partnership or the General Partner is required by law or by agreements with unaffiliated third parties to keep confidential.

Section 8.6 Redemption Rights

A. On or after the date two years after the Effective Date, each Limited Partner shall have the right (subject to the terms and conditions set forth herein) to require the Partnership to redeem all or a portion of the Partnership Units held by such Limited Partner (such Partnership Units being hereafter referred to as "Tendered Units") in exchange for the Cash Amount (a "Redemption"), provided that the terms of such Partnership Units do not provide that such Partnership Units are not entitled to a right of Redemption; provided, that, Partnership Units subject to that Pledge Agreement shall, to the extent the pledgee thereunder is entitled to exercise remedies thereunder, be subject to redemption prior to the date two years after the Effective Date. Unless otherwise expressly provided in this Agreement or a separate agreement entered into between the Partnership and the holders of such Partnership Units, all Partnership Units shall be entitled to a right of Redemption hereunder. Any Redemption shall be exercised pursuant to a Notice of Redemption delivered to the General Partner by the Limited Partner who is exercising the right (the "Tendering Partner"). The Cash Amount shall be delivered as a certified check payable to the Tendering Partner within ten (10) days of the Specified Redemption Date in accordance with the instructions set forth in the Notice of Redemption.

B. Notwithstanding Section 8.6.A above, if a Limited Partner has delivered to the General Partner a Notice of Redemption then the General Partner may, in its sole and absolute discretion, (subject to the limitations on ownership and transfer of REIT Shares set forth in Article IV.E of the Charter) elect to acquire some or all of the Tendered Units from the Tendering Partner in exchange for the REIT Shares Amount (as of the Specified Redemption Date) and, if the General Partner so elects, the Tendering Partner shall sell the Tendered Units to the General Partner in exchange for the REIT Shares Amount. In such event, the Tendering Partner shall have no right to cause the Partnership to redeem such Tendered Units. The General Partner shall promptly give such Tendering Partner written notice of its election, and the Tendering Partner may elect to withdraw its redemption request at any time prior to the acceptance of the Cash Amount or REIT Shares Amount by such Tendering Partner. Notwithstanding the foregoing, the General Partner, at the request of a Limited Partner that is a corporation or limited liability company, shall be required to issue, and the General Partner agrees to issue, the REIT Shares Amount in exchange for such Limited Partner's Tendered Units, subject to the ownership restrictions applicable to such shares set forth in the Charter. In addition, the General Partner agrees to maintain an amount of authorized but unissued REIT Shares equal to the number of REIT Shares issuable upon the exchange of Partnership Units owned from time to time by Limited Partners that are corporations.

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C. The REIT Shares Amount, if applicable, shall be delivered as duly authorized, validly issued, fully paid and nonassessable REIT Shares and, if applicable, free of any pledge, lien, encumbrance or restriction, other than those provided in the Charter, the Bylaws of the General Partner, the Securities Act, relevant state securities or blue sky laws and any applicable registration rights agreement with respect to such REIT Shares entered into by the Tendering Partner. The REIT Shares Amount shall be registered in the name and otherwise delivered as set forth in the Notice of Redemption. Notwithstanding any delay in such delivery (but subject to Section 8.6.E), the Tendering Partner shall be deemed the owner of such REIT Shares for all purposes, including without limitation, rights to vote or consent, and receive dividends, as of the Specified Redemption Date.

D. Each Limited Partner covenants and agrees with the General Partner that all Tendered Units shall be delivered to the General Partner free and clear of all liens, claims and encumbrances whatsoever and should any such liens, claims and/or encumbrances exist or arise with respect to such Tendered Units, the General Partner shall be under no obligation to acquire the same. Each Limited Partner further agrees that, in the event any state or local property transfer tax is payable as a result of the transfer of its Tendered Units to the General Partner (or its designee), such Limited Partner shall assume and pay such transfer tax.

E. Notwithstanding the provisions of Section 8.6.A, 8.6.B, 8.6.C or any other provision of this Agreement, a Limited Partner (i) shall not be entitled to effect a Redemption for cash or an exchange for REIT Shares to the extent the ownership or right to acquire REIT Shares pursuant to such exchange by such Partner on the Specified Redemption Date would cause such Partner or any other Person, or, in the opinion of counsel selected by the General Partner, may cause such Partner or any other Person, to violate the restrictions on ownership and transfer of REIT Shares set forth in Article IV.E of the Charter and (ii) shall have no rights under this Agreement to acquire REIT Shares which would otherwise be prohibited under the Charter. To the extent any attempted Redemption or exchange for REIT Shares would be in violation of this Section 8.6.E, it shall be null and void ab initio and such Limited Partner shall not acquire any rights or economic interest in the cash otherwise payable upon such redemption or the REIT Shares otherwise issuable upon such exchange.

F. Notwithstanding anything herein to the contrary (but subject to
Section 8.6.E), with respect to any Redemption or exchange for REIT Shares pursuant to this Section 8.6:

(1) All Partnership Units acquired by the General Partner pursuant thereto shall automatically, and without further action required, be converted into and deemed to be General Partner Interests comprised of the same number and class of Partnership Units.

(2) Without the consent of the General Partner, each Limited Partner may not effect a Redemption for less than 500 Partnership Units or, if the Limited Partner holds less than 500 Partnership Units, all of the Partnership Units held by such Limited Partner.

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(3) Without the consent of the General Partner, each Limited Partner may not effect a Redemption during the period after the Partnership Record Date with respect to a distribution and before the record date established by the General Partner for a distribution to its stockholders of some or all of its portion of such distribution.

(4) The consummation of any Redemption or exchange for REIT Shares shall be subject to the expiration or termination of the applicable waiting period, if any, under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended.

(5) Each Tendering Partner shall continue to own all Partnership Units subject to any Redemption or exchange for REIT Shares, and be treated as a Limited Partner with respect to such Partnership Units for all purposes of this Agreement, until such Partnership Units are transferred to the General Partner and paid for or exchanged on the Specified Redemption Date. Until a Specified Redemption Date, the Tendering Partner shall have no rights as a stockholder of the General Partner with respect to such Tendering Partner's Partnership Units.

G. In the event that the Partnership issues additional Partnership Interests to any Additional Limited Partner pursuant to Section 4.3.C hereof, the General Partner shall make such revisions to this Section 8.6 as it determines are necessary to reflect the issuance of such additional Partnership Interests.

ARTICLE 9
BOOKS, RECORDS, ACCOUNTING AND REPORTS

Section 9.1 Records and Accounting

The General Partner shall keep or cause to be kept at the principal office of the Partnership appropriate books and records with respect to the Partnership's business, including without limitation, all books and records necessary to provide to the Limited Partners any information, lists and copies of documents required to be provided pursuant to Section 9.3 hereof. Any records maintained by or on behalf of the Partnership in the regular course of its business may be kept on, or be in the form of, punch cards, magnetic tape, photographs, micrographics or any other information storage device, provided that the records so maintained are convertible into clearly legible written form

within a reasonable period of time. The books of the Partnership shall be maintained, for financial and tax reporting purposes, on an accrual basis in accordance with generally accepted accounting principles.

Section 9.2 Fiscal Year

The fiscal year of the Partnership shall be the calendar year.

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Section 9.3 Reports

A. As soon as practicable, but in no event later than 105 days after the close of each Partnership Year, or such earlier date as they are filed with the Securities and Exchange Commission, the General Partner shall cause to be mailed to each Limited Partner as of the close of the Partnership Year, an annual report containing financial statements of the Partnership, or of the General Partner if such statements are prepared solely on a consolidated basis with the General Partner, for such Partnership Year, presented in accordance with generally accepted accounting principles, such statements to be audited by a nationally recognized firm of independent public accountants selected by the General Partner.

B. As soon as practicable, but in no event later than 45 days after the close of each calendar quarter (except the last calendar quarter of each year), or such earlier date as they are filed with the Securities and Exchange Commission, the General Partner shall cause to be mailed to each Limited Partner as of the last day of the calendar quarter, a report containing unaudited financial statements of the Partnership, or of the General Partner, if such statements are prepared solely on a consolidated basis with the General Partner, presented in accordance with the applicable law or regulation, or as the General Partner determines to be appropriate.

ARTICLE 10
TAX MATTERS

Section 10.1 Preparation of Tax Returns

The General Partner shall arrange for the preparation and timely filing of all returns of Partnership income, gains, deductions, losses and other items required of the Partnership for federal and state income tax purposes and shall use all reasonable efforts to furnish, within 90 days of the close of each taxable year, the tax information reasonably required by Limited Partners for federal and state income tax reporting purposes.

Section 10.2 Tax Elections

Except as otherwise provided herein, the General Partner shall, in its sole and absolute discretion, determine whether to make any available election pursuant to the Code, including the election under Section 754 of the Code. The General Partner shall have the right to seek to revoke any such election (including without limitation, any election under Section 754 of the Code) upon the General Partner's determination in its sole and absolute discretion that such revocation is the best interests of the Partners.

Section 10.3 Tax Matters Partner

A. The General Partner shall be the "tax matters partner" of the Partnership for federal income tax purposes. Pursuant to Section 6223(c) of the Code, upon receipt of notice from the IRS of the beginning of an administrative proceeding with respect to the Partnership, the tax matters partner shall furnish the IRS with the name, address and profit interest of each

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of the Limited Partners and Assignees; provided, however, that such information is provided to the Partnership by the Limited Partners and Assignees.

B. The tax matters partner is authorized, but not required:

(1) to enter into any settlement with the IRS with respect to any administrative or judicial proceedings for the adjustment of Partnership items required to be taken into account by a Partner for income tax purposes (such administrative proceedings being referred to as a "tax audit" and such judicial proceedings being referred to as "judicial review"), and in the settlement agreement the tax matters partner may expressly state that such agreement shall bind all Partners, except that such settlement agreement shall not bind any Partner (i) who (within the time prescribed pursuant to the Code and Regulations) files a statement with the IRS providing that the tax matters partner shall not have the authority to enter into a settlement agreement on behalf of such Partner or (ii) who is a "notice partner" (as defined in Section 6231 of the Code) or a member of a "notice group" (as defined in Section 6223(b)(2) of the Code);

(2) in the event that a notice of a final administrative adjustment at the Partnership level of any item required to be taken into account by a Partner for tax purposes (a "final adjustment") is mailed to the tax matters partner, to seek judicial review of such final adjustment, including the filing of a petition for readjustment with the Tax Court or the United States Claims Court, or the filing of a complaint for refund with the District Court of the United States for the district in which the Partnership's principal place of business is located;

(3) to intervene in any action brought by any other Partner for judicial review of a final adjustment;

(4) to file a request for an administrative adjustment with the IRS at any time and, if any part of such request is not allowed by the IRS, to file an appropriate pleading (petition or complaint) for judicial review with respect to such request;

(5) to enter into an agreement with the IRS to extend the period for assessing any tax which is attributable to any item required to be taken into account by a Partner for tax purposes, or an item affected by such item; and

(6) to take any other action on behalf of the Partners of the Partnership in connection with any tax audit or judicial review proceeding to the extent permitted by applicable law or regulations.

The taking of any action and the incurring of any expense by the tax matters partner in connection with any such proceeding, except to the extent required by law, is a matter

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in the sole and absolute discretion of the tax matters partner and the provisions relating to indemnification of the General Partner set forth in
Section 7.7 of this Agreement shall be fully applicable to the tax matters partner in its capacity as such.

C. The tax matters partner shall receive no compensation for its services. All third party costs and expenses incurred by the tax matters partner in performing its duties as such (including legal and accounting fees) shall be borne by the Partnership. Nothing herein shall be construed to restrict the Partnership from engaging an accounting firm to assist the tax matters partner in discharging its duties hereunder, so long as the compensation paid by the Partnership for such services is reasonable.

Section 10.4 Organizational Expenses

The Partnership shall elect to deduct expenses, if any, incurred by it in organizing the Partnership ratably over a 60-month period as provided in
Section 709 of the Code.

Section 10.5 Withholding

Each Limited Partner hereby authorizes the Partnership to withhold from or pay on behalf of or with respect to such Limited Partner any amount of federal, state, local, or foreign taxes that the General Partner determines that the Partnership is required to withhold or pay with respect to any amount distributable or allocable to such Limited Partner pursuant to this Agreement, including, without limitation, any taxes required to be withheld or paid by the Partnership pursuant to Sections 1441, 1442, 1445 or 1446 of the Code. Any amount paid on behalf of or with respect to a Limited Partner shall constitute a loan by the Partnership to such Limited Partner, which loan shall be repaid by such Limited Partner within 15 days after notice from the General Partner that such payment must be made unless (i) the Partnership withholds such payment from a distribution which would otherwise be made to the Limited Partner or (ii) the General Partner determines, in its sole and absolute discretion, that such payment may be satisfied out of the available funds of the Partnership which would, but for such payment, be distributed to the Limited Partner. Any amounts withheld pursuant to the foregoing clauses (i) or (ii) shall be treated as having been distributed to such Limited Partner. Each Limited Partner hereby unconditionally and irrevocably grants to the Partnership a security interest in such Limited Partner's Partnership Interest to secure such Limited Partner's obligation to pay to the Partnership any amounts required to be paid pursuant to this Section 10.5. In the event that a Limited Partner fails to pay any amounts owed to the Partnership pursuant to this Section 10.5 when due, the General Partner may, in its sole and absolute discretion, elect to make the payment to the Partnership on behalf of such defaulting Limited Partner, and in such event shall be deemed to have loaned such amount to such defaulting Limited Partner and shall succeed to all rights and remedies of the Partnership as against such defaulting Limited Partner (including, without limitation, the right to receive distributions and the holding of a security interest in such Limited Partner's Partnership Interest). Any amounts payable by a Limited Partner hereunder shall bear interest at the base rate on corporate loans at large United States money center commercial banks, as published from time to time in the Wall Street Journal, plus two percentage points (but not higher than the maximum lawful rate) from the date such amount is due (i.e., 15 days after demand) until such

amount is paid in full. Each Limited Partner shall

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take such actions as the Partnership or the General Partner shall request in order to perfect or enforce the security interest created hereunder.

ARTICLE 11
TRANSFERS AND WITHDRAWALS

Section 11.1 Transfer

A. The term "transfer," when used in this Article 11 with respect to a Partnership Interest, shall be deemed to refer to a transaction by which the General Partner purports to assign its General Partner Interest to another Person or by which a Limited Partner purports to assign its Limited Partnership Interest to another Person, and includes a sale, assignment, gift (outright or in trust), pledge, encumbrance, hypothecation, mortgage, exchange or any other disposition by law or otherwise. The term "transfer" when used in this Article 11 does not include any Redemption or exchange for REIT Shares pursuant to
Section 8.6. No part of the interest of a Limited Partner shall be subject to the claims of any creditor, any spouse for alimony or support, or to legal process, and may not be voluntarily or involuntarily alienated or encumbered, except as may be specifically provided for in this Agreement.

B. No Partnership Interest shall be transferred, in whole or in part, except in accordance with the terms and conditions set forth in this Article 11. Any transfer or purported transfer of a Partnership Interest not made in accordance with this Article 11 shall be null and void.

Section 11.2 Transfer of General Partner's Partnership Interest

A. The General Partner shall not withdraw from the Partnership and shall not transfer all or any portion of its interest in the Partnership
(whether by sale, statutory merger or consolidation, liquidation or otherwise) without the Consent of the Partners, which may be given or withheld by each Partner in its sole and absolute discretion, and only upon the admission of a successor General Partner pursuant to Section 12.1. Upon any transfer of a Partnership Interest in accordance with the provisions of this Section 11.2, the transferee shall become a substitute General Partner for all purposes herein, and shall be vested with the powers and rights of the transferor General Partner, and shall be liable for all obligations and responsible for all duties of the General Partner, once such transferee has executed such instruments as may be necessary to effectuate such admission and to confirm the agreement of such transferee to be bound by all the terms and provisions of this Agreement with respect to the Partnership Interest so acquired. It is a condition to any transfer otherwise permitted hereunder that the transferee assumes, by operation of law or express agreement, all of the obligations of the transferor General Partner under this Agreement with respect to such transferred Partnership Interest, and no such transfer (other than pursuant to a statutory merger or consolidation wherein all obligations and liabilities of the transferor General Partner are assumed by a successor corporation by operation of law) shall relieve the transferor General Partner of its obligations under this Agreement without the Consent of the Partners, in their reasonable discretion. In the event the General Partner withdraws from the Partnership, in

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violation of this Agreement or otherwise, or otherwise dissolves or terminates, or upon the Incapacity of the General Partner, all of the remaining Partners may elect to continue the Partnership business by selecting a substitute General Partner in accordance with the Act.

B. The General Partner shall not engage in any merger, consolidation or other combination with or into another person, sale of all or substantially all of its assets or any reclassification, recapitalization or change of its outstanding equity interests (each, a "Termination Transaction"), unless (i) the Termination Transaction has been approved by a Consent of the Partners and, except as otherwise provided in Section 11.2.C, in connection with which all Limited Partners either will receive, or will have the right to elect to receive, for each Partnership Unit an amount of cash, securities, or other property equal to the product of the REIT Shares Amount and the greatest amount of cash, securities or other property paid to a holder of one REIT Share in consideration of one REIT Share pursuant to the terms of the Termination Transaction; provided that, if, in connection with the Termination Transaction, a purchase, tender or exchange offer shall have been made to and accepted by the holders of the outstanding REIT Shares, each holder of Partnership Units shall receive, or shall have the right to elect to receive, the greatest amount of cash, securities, or other property which such holder would have received had it exercised its right to Redemption (as set forth in Section 8.6) and received REIT Shares in exchange for its Partnership Units immediately prior to the expiration of such purchase, tender or exchange offer and had thereupon accepted such purchase, tender or exchange offer and then such Termination Transaction shall have been consummated.

C. The General Partner may merge, or otherwise combine its assets, with another entity without satisfying the requirements of Section 11.2.B(ii) hereof if: (i) immediately after such merger or other combination, substantially all of the assets directly or indirectly owned by the surviving entity, other than Partnership Units held by such General Partner, are owned directly or indirectly by the Partnership or another limited partnership or limited liability company which is the survivor of a merger, consolidation or combination of assets with the Partnership (in each case, the "Surviving Partnership"); (ii) the Limited Partners own a percentage interest of the Surviving Partnership based on the relative fair market value of the net assets of the Partnership (as determined pursuant to Section 11.2.E) and the other net assets of the Surviving Partnership (as determined pursuant to Section 11.2.E) immediately prior to the consummation of such transaction; (iii) the rights preferences and privileges of the Limited Partners in the Surviving Partnership are at least as favorable as those in effect immediately prior to the consummation of such transaction and as those applicable to any other limited partners or non-managing members of the Surviving Partnership; and (iv) such rights of the Limited Partners include the right to exchange their interests in the Surviving Partnership for at least one of: (a) the consideration available to such Limited Partners pursuant to Section 11.2.B or (b) if the ultimate controlling person of the Surviving Partnership has publicly traded common equity securities, such common equity securities, with an exchange ratio based on the relative fair market value of such securities (as determined pursuant to
Section 11.2.E) and the REIT Shares.

D. In connection with any transaction permitted by Section 11.2.B or
Section 11.2.C hereof, the General Partner shall use its commercially reasonable efforts to structure such Termination Transaction to avoid causing the Limited Partners to recognize gain for federal

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income tax purposes by virtue of the occurrence of or their participation in such Termination Transaction.

E. In connection with any transaction permitted by Section 11.2.B or 11.2.C, the relative fair market values shall be reasonably determined by the General Partner as of the time of such transaction and, to the extent applicable, shall be no less favorable to the Limited Partners than the relative values reflected in the terms of such transaction.

Section 11.3 Limited Partners' Rights to Transfer

A. Prior to the second anniversary of the closing of the initial public offering of REIT Shares, no Limited Partner shall transfer all or any portion of its Partnership Interest to any transferee without the consent of the General Partner, which consent may be withheld in its sole and absolute discretion; provided, however, that any Limited Partner may, at any time (whether prior to or after such second anniversary), without the consent of the General Partner, (i) transfer all or any portion of its Partnership Interest to the General Partner, (ii) transfer all or any portion of its Partnership Interest to an Affiliate, another Original Limited Partner or to an Immediate Family member, subject to the provisions of Section 11.6, or in the case of an Original Limited Partner, to such Original Limited Partner's shareholders, members, partners or beneficiaries, as the case may be, (iii) transfer all or any portion of its Partnership Interest to a trust for the benefit of a charitable beneficiary or to a charitable foundation, subject to the provisions of Section 11.6, and (iv) subject to the provisions of Section 11.6, pledge (a "Pledge") all or any portion of its Partnership Interest to a lending institution, which is not an Affiliate of such Limited Partner, as collateral or security for a bona fide loan or other extension of credit, and transfer such pledged Partnership Interest to such lending institution in connection with the exercise of remedies under such loan or extension or credit. Each Limited Partner or Assignee (resulting from a transfer made pursuant to clauses (i)-(iv) of the proviso of the preceding sentence) shall have the right to transfer all or any portion of its Partnership Interest, subject to the provisions of Section 11.6 and the satisfaction of each of the following conditions (in addition to the right of each such Limited Partner or Assignee to continue to make any such transfer permitted by clauses (i)-(iv) of such proviso without satisfying either of the following conditions):

(a) General Partner Right of First Refusal. The transferring Partner shall give written notice of the proposed transfer to the General Partner, which notice shall state (i) the identity of the proposed transferee, and (ii) the amount and type of consideration proposed to be received for the transferred Partnership Units. The General Partner shall have ten (10) days upon which to give the transferring Partner notice of its election to acquire the Partnership Units on the proposed terms. If it so elects, it shall purchase the Partnership Units on such terms within ten (10) days after giving notice of such election. If it does not so elect, the transferring Partner may transfer such Partnership Units to a third party, on economic terms no more favorable to the transferee than the proposed terms, subject to the other conditions of this Section 11.3.

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(b) Qualified Transferee. Any transfer of a Partnership Interest shall be made only to Qualified Transferees.

It is a condition to any transfer otherwise permitted hereunder that the transferee assumes by operation of law or express agreement all of the obligations of the transferor Limited Partner under this Agreement with respect to such transferred Partnership Interest and no such transfer (other than pursuant to a statutory merger or consolidation wherein all obligations and liabilities of the transferor Partner are assumed by a successor corporation by operation of law) shall relieve the transferor Partner of its obligations under this Agreement without the approval of the General Partner, in its reasonable discretion. Notwithstanding the foregoing, any transferee of any transferred Partnership Interest shall be subject to any and all ownership limitations contained in the Charter and the representations in Section 3.4.D. Any transferee, whether or not admitted as a Substituted Limited Partner, shall take subject to the obligations of the transferor hereunder. Unless admitted as a Substitute Limited Partner, no transferee, whether by a voluntary transfer, by operation of law or otherwise, shall have rights hereunder, other than the rights of an Assignee as provided in Section 11.5.

B. If a Limited Partner is subject to Incapacity, the executor, administrator, trustee, committee, guardian, conservator, or receiver of such Limited Partner's estate shall have all the rights of a Limited Partner, but not more rights than those enjoyed by other Limited Partners, for the purpose of settling or managing the estate, and such power as the Incapacitated Limited Partner possessed to transfer all or any part of his or its interest in the Partnership. The Incapacity of a Limited Partner, in and of itself, shall not dissolve or terminate the Partnership.

C. The General Partner may prohibit any transfer otherwise permitted under Section 11.3 by a Limited Partner of his or her Partnership Units if, in the opinion of legal counsel to the Partnership, such transfer would require the filing of a registration statement under the Securities Act by the Partnership or would otherwise violate any federal or state securities laws or regulations applicable to the Partnership or the Partnership Unit.

D. No transfer by a Limited Partner of his or her Partnership Units
(including any Redemption or exchange for REIT Shares pursuant to Section 8.6) may be made to any person if (i) in the opinion of legal counsel for the Partnership, it would result in the Partnership being treated as an association taxable as a corporation, or (ii) such transfer is effectuated through an "established securities market" or a "secondary market (or the substantial equivalent thereof)" within the meaning of Section 7704 of the Code.

E. No transfer of any Partnership Units may be made to a lender to the Partnership or any Person who is related (within the meaning of Section 1.752-4(b) of the Regulations) to any lender to the Partnership whose loan constitutes a Nonrecourse Liability, without the consent of the General Partner, in its sole and absolute discretion; provided that, as a condition to such consent, the lender will be required to enter into an arrangement with the Partnership and the General Partner to redeem or exchange for the REIT Shares Amount any Partnership Units in which a security interest is held simultaneously with the time at which such lender would be deemed to be a partner in the Partnership for purposes of allocating liabilities to such lender under Section 752 of the Code.

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Section 11.4 Substituted Limited Partners

A. No Limited Partner shall have the right to substitute a transferee as a Limited Partner in his or her place (including any transferee permitted by Section 11.3). The General Partner shall, however, have the right to consent to the admission of a permitted transferee of the interest of a Limited Partner, other than a transferee in a transfer permitted by Section 11.3 hereof, as a Substituted Limited Partner, pursuant to this Section 11.4, which consent may be given or withheld by the General Partner in its sole and absolute discretion. The General Partner's failure or refusal to permit a transferee of any such interests to become a Substituted Limited Partner shall not give rise to any cause of action against the Partnership or any Partner.

B. A transferee who has been admitted as a Substituted Limited Partner in accordance with this Article 11 shall have all the rights and powers and be subject to all the restrictions and liabilities of a Limited Partner under this Agreement. The admission of any transferee as a Substituted Limited Partner shall be subject to the transferee executing and delivering to the Partnership an acceptance of all of the terms and conditions of this Agreement (including without limitation, the provisions of Section 2.4 and such other documents or instruments as may be required to effect the admission, each in form and substance satisfactory to the General Partner) and the acknowledgement by such transferee that each of the representations and warranties set forth in
Section 3.4 hereof are true and correct with respect to such transferee as of the date of the transfer of the Partnership Interest to such transferee.

C. Upon the admission of a Substituted Limited Partner, the General Partner shall amend Exhibit A to reflect the name, address, number of Partnership Units, and Percentage Interest of such Substituted Limited Partner and to eliminate or adjust, if necessary, the name, address and interest of the predecessor of such Substituted Limited Partner.

Section 11.5 Assignees

If the General Partner, in its sole and absolute discretion, does not consent to the admission of any permitted transferee under Section 11.3 as a Substituted Limited Partner, as described in Section 11.4, such transferee shall be considered an Assignee for purposes of this Agreement. An Assignee shall be entitled to all the rights of an assignee of a limited partnership interest under the Act, including the right to receive distributions from the Partnership and the share of Net Income, Net Losses, gain and loss attributable to the Partnership Units assigned to such transferee, the rights to transfer the Partnership Units provided in this Article 11, and the right of Redemption provided in Section 8.6, but shall not be deemed to be a holder of Partnership Units for any other purpose under this Agreement, and shall not be entitled to effect a Consent with respect to such Partnership Units on any matter presented to the Limited Partners for approval (such Consent remaining with the transferor Limited Partner). In the event any such transferee desires to make a further assignment of any such Partnership Units, such transferee shall be subject to all the provisions of this Article 11 to the same extent and in the same manner as any Limited Partner desiring to make an assignment of Partnership Units.

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Section 11.6 General Provisions

A. No Limited Partner may withdraw from the Partnership other than as a result of (i) a permitted transfer of all of such Limited Partner's Partnership Units in accordance with this Article 11 and the transferee(s) of such Units being admitted to the Partnership as a Substituted Limited Partner(s) or (ii) pursuant to the exercise of its right of Redemption of all of such Limited Partner's Partnership Units under Section 8.6.

B. Any Limited Partner who shall transfer all of such Limited Partner's Partnership Units in a transfer permitted pursuant to this Article 11 where such transferee was admitted as a Substituted Limited Partner or pursuant to the exercise of its rights of Redemption of all of such Limited Partner's Partnership Units under Section 8.6 shall cease to be a Limited Partner.

C. Transfers pursuant to this Article 11 may only be made on the first day of a fiscal quarter of the Partnership, unless the General Partner otherwise agrees.

D. If any Partnership Interest is transferred, assigned or redeemed during any quarterly segment of the Partnership's fiscal year in compliance with the provisions of this Article 11 or transferred or redeemed pursuant to Section 8.6, on any day other than the first day of a Partnership Year, then Net Income, Net Losses, each item thereof and all other items attributable to such Partnership Interest for such fiscal year shall be divided and allocated between the transferor Partner and the transferee Partner by taking into account their varying interests during the fiscal year in accordance with Section 706(d) of the Code, using the interim closing of the books method. Except as otherwise required by Section 706(d) of the Code, solely for purposes of making such allocations, each of such items for the calendar month in which the transfer, assignment or redemption occurs shall be allocated to the Person who is a Partner as of midnight on the last day of said month and none of such items for the calendar month in which a redemption occurs will be allocated to the redeeming Partner. All distributions of Available Cash with respect to which the Partnership Record Date is before the date of such transfer, assignment or redemption shall be made to the transferor Partner, and all distributions of Available Cash thereafter, in the case of a transfer or assignment other than a redemption, shall be made to the transferee Partner.

E. In addition to any other restrictions on transfer herein contained, including without limitation the provisions of this Article 11 and
Section 2.6, in no event may any transfer or assignment of a Partnership Interest by any Partner (including by way of a Redemption) be made (i) to any person or entity who lacks the legal right, power or capacity to own a Partnership Interest; (ii) in violation of applicable law; (iii) of any component portion of a Partnership Interest, such as the Capital Account, or rights to distributions, separate and apart from all other components of a Partnership Interest; (iv) if in the opinion of legal counsel to the Partnership such transfer would cause a termination of the Partnership for federal or state income tax purposes (except as a result of the Redemption or exchange for REIT Shares of all Partnership Units held by all Limited Partners or pursuant to a Termination Transaction expressly permitted under Section 11.2); (v) if in the opinion of counsel to the Partnership such transfer would cause the Partnership to cease to be classified as a partnership for federal or state

54

income tax purposes (except as a result of the Redemption or exchange for REIT Shares of all Partnership Units held by all Limited Partners); (vi) if such transfer would cause the Partnership to become, with respect to any employee benefit plan subject to Title I of ERISA, a "party-in-interest" (as defined in
Section 3(14) of ERISA) or a "disqualified person" (as defined in Section 4975(c) of the Code); (vii) if such transfer would, in the opinion of counsel to the Partnership, cause any portion of the assets of the Partnership to constitute assets of any employee benefit plan pursuant to Department of Labor Regulations Section 2510.2-101; (viii) if such transfer requires the registration of such Partnership Interest pursuant to any applicable federal or state securities laws; (ix) if such transfer is effectuated through an "established securities market" or a "secondary market" (or the substantial equivalent thereof) within the meaning of Section 7704 of the Code or such transfer causes the Partnership to become a "Publicly Traded Partnership," as such term is defined in Sections 469(k)(2) or 7704(b) of the Code; (x) if such transfer subjects the Partnership to be regulated under the Investment Company Act of 1940, the Investment Advisors Act of 1940 or the Employee Retirement Income Security Act of 1974, each as amended; (xi) if the transferee or assignee of such Partnership Interest is unable to make the representations set forth in
Section 3.4.D or such transfer could otherwise adversely affect the ability of the General Partner to remain qualified as a REIT; or (xii) if in the opinion of legal counsel for the Partnership such transfer would adversely affect the ability of the General Partner to continue to qualify as a REIT or subject the General Partner to any additional taxes under Section 857 or Section 4981 of the Code.

F. The General Partner shall monitor the transfers of interests in the Partnership to determine (i) if such interests are being traded on an "established securities market" or a "secondary market (or the substantial equivalent thereof)" within the meaning of Section 7704 of the Code, and (ii) whether additional transfers of interests would result in the Partnership being unable to qualify for at least one of the "safe harbors" set forth in Regulations Section 1.7704-1 (or such other guidance subsequently published by the IRS setting forth safe harbors under which interests will not be treated as "readily tradable on a secondary market (or the substantial equivalent thereof)" within the meaning of Section 7704 of the Code) (the "Safe Harbors"). The General Partner shall take all steps reasonably necessary or appropriate to prevent any trading of interests or any recognition by the Partnership of transfers made on such markets and, except as otherwise provided herein, to insure that at least one of the Safe Harbors is met.

Section 11.7 Transfer of Pledged Partnership Units

A. Notwithstanding anything to the contrary in this Agreement but subject to Section 11.6 hereof, any or all of the Limited Partnership Interests pledged to the Company, as agent on behalf of the pledgees, pursuant to the Pledge Agreement may be transferred, without the consent of any other Partner, to any Person designated by the Company in its sole and absolute discretion in connection with the exercise by the Company of its rights and remedies under the Pledge Agreement. Any such transferee shall be admitted as a Substituted Limited Partner, subject to the provisions of Section 11.4 hereof.

B. Each of the Pledgors hereby constitutes and appoints the Company and authorized officers and attorneys-in-fact of the Company, and each of those acting singly, in

55

each case with full power of substitution, as its true and lawful agent and attorney-in-fact, with full power and authority in its name, place and stead to effect any transfer of Partnership Interests pledged pursuant to the Pledge Agreement referred to in Subparagraph A of this Section 11.7. The foregoing power of attorney is hereby declared to be irrevocable and a power coupled with an interest, and it shall survive and not be affected by the subsequent Incapacity of any Pledgor and shall extend to such Pledgor's heirs, successors, assigns and personal representatives. Each such Pledgor hereby waives any and all defenses which may be available to contest, negate or disaffirm the action of the Company taken in good faith under such power of attorney.

ARTICLE 12
ADMISSION OF PARTNERS

Section 12.1 Admission of Successor General Partner

A successor to all of the General Partner's General Partner Interest pursuant to Section 11.2 hereof who is proposed to be admitted as a successor General Partner shall be admitted to the Partnership as the General Partner, effective upon such transfer. Any such transferee shall carry on the business of the Partnership without dissolution. In each case, the admission shall be subject to the successor General Partner executing and delivering to the Partnership an acceptance of all of the terms and conditions of this Agreement and such other documents or instruments as may be required to effect the admission. In the case of such admission on any day other than the first day of a Partnership Year, all items attributable to the General Partner Interest for such Partnership Year shall be allocated between the transferring General Partner and such successor as provided in Article 11 hereof.

Section 12.2 Admission of Additional Limited Partners

A. After the admission to the Partnership of the initial Limited Partners on the date hereof, a Person who makes a Capital Contribution to the Partnership in accordance with this Agreement shall be admitted to the Partnership as an Additional Limited Partner only upon furnishing to the General Partner (i) evidence of acceptance in form satisfactory to the General Partner of all of the terms and conditions of this Agreement, including, without limitation, the power of attorney granted in Section 2.4 hereof and (ii) such other documents or instruments as may be required in the discretion of the General Partner in order to effect such Person's admission as an Additional Limited Partner.

B. Notwithstanding anything to the contrary in this Section 12.2, no Person shall be admitted as an Additional Limited Partner without the consent of the General Partner, which consent may be given or withheld in the General Partner's sole and absolute discretion. The admission of any Person as an Additional Limited Partner shall become effective on the date upon which the name of such Person is recorded on the books and records of the Partnership, following the receipt of the Capital Contribution in respect of such Limited Partner, the documents set forth in Paragraph A of this Section 12.2 hereof and the consent of the General Partner to such admission. If any Additional Limited Partner is admitted to the Partnership on

56

any day other than the first day of a Partnership Year, then Net Income, Net Losses, each item thereof and all other items allocable among Partners and Assignees for such Partnership Year shall be allocated among such Limited Partner and all other Partners and Assignees by taking into account their varying interests during the Partnership Year in accordance with Section 706(d) of the Code, using the interim closing books method. Solely for purposes of making such allocations, each of such items for the calendar month in which an admission of an Additional Limited Partner occurs shall be allocated among all the Partners and Assignees including such Additional Limited Partner. All distributions of Available Cash with respect to which the Partnership Record Date is before the date of such admission shall be made solely to Partners and Assignees other than the Additional Limited Partner (other than in its capacity as an Assignee) and except as otherwise agreed to by the Additional Limited Partners and the General Partner, and all distributions of Available Cash thereafter shall be made to all Partners and Assignees including such Additional Limited Partner.

Section 12.3 Amendment of Agreement and Certificate of Limited Partnership

For the admission to the Partnership of any Partner, the General Partner shall take all steps necessary and appropriate under the Act to amend the records of the Partnership and, if necessary, to prepare as soon as practical an amendment of this Agreement (including an amendment of Exhibit A) and, if required by law, shall prepare and file an amendment to the Certificate and may for this purpose exercise the power of attorney granted pursuant to
Section 2.4 hereof.

ARTICLE 13
DISSOLUTION AND LIQUIDATION

Section 13.1 Dissolution

The Partnership shall not be dissolved by the admission of Substituted Limited Partners or Additional Limited Partners or by the admission of a successor General Partner in accordance with the terms of this Agreement. Upon the withdrawal of the General Partner, any successor General Partner (selected as described in Section 13.1.B below) shall continue the business of the Partnership. The Partnership shall dissolve, and its affairs shall be wound up, upon the first to occur of any of the following ("Liquidating Events"):

A. the expiration of its term as provided in Section 2.5 hereof;

B. an event of withdrawal of the General Partner, as defined in the Act, unless, within 90 days after the withdrawal, all of the remaining Partners agree in writing, in their sole and absolute discretion, to continue the business of the Partnership and to the appointment, effective as of the date of withdrawal, of a substitute General Partner;

C. subject to the provisions of Section 7.3.D(1) hereof, an election to dissolve the Partnership made by the General Partner;

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D. entry of a decree of judicial dissolution of the Partnership pursuant to the provisions of the Act;

E. the sale of all or substantially all of the assets and properties of the Partnership;

F. the Incapacity of the General Partner, unless all of the remaining Partners in their sole and absolute discretion agree in writing to continue the business of the Partnership and to the appointment, effective as of a date prior to the date of such Incapacity, of a substitute General Partner; or

G. the Redemption or exchange for REIT Shares of all Partnership Units (other than those of the General Partner).

Section 13.2 Winding Up

A. Upon the occurrence of a Liquidating Event, the Partnership shall continue solely for the purposes of winding up its affairs in an orderly manner, liquidating its assets, and satisfying the claims of its creditors and Partners. No Partner shall take any action that is inconsistent with, or not necessary to or appropriate for, the winding up of the Partnership's business and affairs. The General Partner (or, in the event there is no remaining General Partner, any Person elected by a Majority in Interest of the Limited Partners (the "Liquidator")) shall be responsible for overseeing the winding up and dissolution of the Partnership and shall take full account of the Partnership's liabilities and assets and the Partnership property shall be liquidated as promptly as is consistent with obtaining the fair value thereof, and the proceeds therefrom (which may, to the extent determined by the General Partner, include shares of stock of the General Partner) shall be applied and distributed in the following order:

(1) First, to the payment and discharge of all of the Partnership's debts and liabilities to creditors other than the Partners;

(2) Second, to the payment and discharge of all of the Partnership's debts and liabilities to the General Partner;

(3) Third, to the payment and discharge of all of the Partnership's debts and liabilities to the other Partners; and

(4) The balance, if any, to the General Partner and Limited Partners in accordance with their positive Capital Account balances, determined after taking into account all Capital Account adjustments for the Partnership taxable year during which the liquidation occurs (other than those made as a result of the liquidating distribution set forth in this Section 13.2.A(4)).

The General Partner shall not receive any additional compensation for any services performed pursuant to this Article 13 other than reimbursement of its expenses as provided in Section 7.4.

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B. Notwithstanding the provisions of Section 13.2.A hereof which require liquidation of the assets of the Partnership, but subject to the order of priorities set forth therein, if prior to or upon dissolution of the Partnership the Liquidator determines that an immediate sale of part or all of the Partnership's assets would be impractical or would cause undue loss to the Partners, the Liquidator may, in its sole and absolute discretion, defer for a reasonable time the liquidation of any assets except those necessary to satisfy liabilities of the Partnership (including to those Partners as creditors) and/or distribute to the Partners, in lieu of cash, as tenants in common and in accordance with the provisions of Section 13.2.A hereof, undivided interests in such Partnership assets as the Liquidator deems not suitable for liquidation. Any such distributions in kind shall be made only if, in the good faith judgment of the Liquidator, such distributions in kind are in the best interest of the Partners, and shall be subject to such conditions relating to the disposition and management of such properties as the Liquidator deems reasonable and equitable and to any agreements governing the operation of such properties at such time. The Liquidator shall determine the fair market value of any property distributed in kind using such reasonable method of valuation as it may adopt.

Section 13.3 Compliance with Timing Requirements of Regulations

In the event the Partnership is "liquidated" within the meaning of Regulations Section 1.704-1(b)(2)(ii)(g), distributions shall be made pursuant to this Article 13 to the General Partner and Limited Partners who have positive Capital Accounts in compliance with Regulations Section 1.704-1(b)(2)(ii)(b)(2). If any Partner has a deficit balance in his or her Capital Account (after giving effect to all contributions, distributions and allocations for the taxable years, including the year during which such liquidation occurs), such Partner shall have no obligation to make any contribution to the capital of the Partnership with respect to such deficit, and such deficit shall not be considered a debt owed to the Partnership or to any other Person for any purpose whatsoever. In the discretion of the Liquidator or the General Partner, a pro rata portion of the distributions that would otherwise be made to the General Partner and Limited Partners pursuant to this Article 13 may be:

A. distributed to a trust established for the benefit of the General Partner and Limited Partners for the purposes of liquidating Partnership assets, collecting amounts owed to the Partnership, and paying any contingent or unforeseen liabilities or obligations of the Partnership or of the General Partner arising out of or in connection with the Partnership. The assets of any such trust shall be distributed to the General Partner and Limited Partners from time to time, in the reasonable discretion of the Liquidator or the General Partner, in the same proportions and the amount distributed to such trust by the Partnership would otherwise have been distributed to the General Partner and Limited Partners pursuant to this Agreement; or

B. withheld to provide a reasonable reserve for Partnership liabilities (contingent or otherwise) and to reflect the unrealized portion of any installment obligations owed to the Partnership, provided that such withheld amounts shall be distributed to the General Partner and Limited Partners as soon as practicable.

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Section 13.4 Deemed Distribution and Recontribution

Notwithstanding any other provision of this Article 13, in the event the Partnership is liquidated within the meaning of Regulations Section 1.704- 1(b)(2)(ii)(g) but no Liquidating Event has occurred, the Partnership's property shall not be liquidated, the Partnership's liabilities shall not be paid or discharged, and the Partnership's affairs shall not be wound up. Instead, the Partnership shall be deemed to have distributed the Partnership property in kind to the General Partner and Limited Partners, who shall be deemed to have assumed and taken such property subject to all Partnership liabilities, all in accordance with their respective Capital Accounts. Immediately thereafter, the General Partner and Limited Partners shall be deemed to have recontributed the Partnership property in kind to the Partnership, which shall be deemed to have assumed and taken such property subject to all such liabilities.

Section 13.5 Rights of Limited Partners

Except as otherwise provided in this Agreement, each Limited Partner shall look solely to the assets of the Partnership for the return of his Capital Contribution and shall have no right or power to demand or receive property from the General Partner. No Limited Partner shall have priority over any other Limited Partner as to the return of his Capital Contributions, distributions or allocations.

Section 13.6 Notice of Dissolution

In the event a Liquidating Event occurs or an event occurs that would, but for provisions of Section 13.1, result in a dissolution of the Partnership, the General Partner shall, within 30 days thereafter, provide written notice thereof to each of the Partners and to all other parties with whom the Partnership regularly conducts business (as determined in the discretion of the General Partner) and shall publish notice thereof in a newspaper of general circulation in each place in which the Partnership regularly conducts business (as determined in the discretion of the General Partner).

Section 13.7 Cancellation of Certificate of Limited Partnership

Upon the completion of the liquidation of the Partnership cash and property as provided in Section 13.2 hereof, the Partnership shall be terminated and the Certificate and all qualifications of the Partnership as a foreign limited partnership in jurisdictions other than the State of Delaware shall be cancelled and such other actions as may be necessary to terminate the Partnership shall be taken.

Section 13.8 Reasonable Time for Winding-Up

A reasonable time shall be allowed for the orderly winding-up of the business and affairs of the Partnership and the liquidation of its assets pursuant to Section 13.2 hereof, in order to minimize any losses otherwise attendant upon such winding-up, and the provisions of this Agreement shall remain in effect between the Partners during the period of liquidation.

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Section 13.9 Waiver of Partition

Each Partner hereby waives any right to partition of the Partnership property.

ARTICLE 14
AMENDMENT OF PARTNERSHIP AGREEMENT; CONSENTS

Section 14.1 Amendments

A. The actions requiring consent or approval of the Partners or of the Limited Partners pursuant to this Agreement, including Section 7.3, or otherwise pursuant to applicable law, are subject to the procedures in this Article 14.

B. Amendments to this Agreement requiring the consent or approval of Limited Partners may be proposed by the General Partner or by any Limited Partner. Following such proposal, the General Partner shall submit any proposed amendment to the Partners or of the Limited Partners, as applicable. The General Partner shall seek the written consent or approval of the Partners or of the Limited Partners on the proposed amendment or shall call a meeting to vote thereon and to transact any other business that it may deem appropriate. For purposes of obtaining a written consent, the General Partner may require a response within a reasonable specified time, but not less than 15 days, and failure to respond in such time period shall constitute a consent which is consistent with the General Partner's recommendation (if so recommended) with respect to the proposal; provided, that, an action shall become effective at such time as requisite consents are received even if prior to such specified time.

Section 14.2 Action by the Partners

A. Meetings of the Partners may be called by the General Partner and shall be called upon the receipt by the General Partner of a written request by Limited Partners holding 25 percent or more of the Partnership Interests held by Limited Partners. The call shall state the nature of the business to be transacted. Notice of any such meeting shall be given to all Partners not less than seven days nor more than 30 days prior to the date of such meeting. Partners may vote in person or by proxy at such meeting. Whenever the vote of the Percentage Interests of the Partners, or the Consent of the Partners or Consent of the Limited Partners is permitted or required under this Agreement, such vote or Consent may be given at a meeting of Partners or may be given in accordance with the procedure prescribed in Section 14.1 hereof.

B. Any action required or permitted to be taken at a meeting of the Partners may be taken without a meeting if a written consent setting forth the action so taken is signed by the percentage as is expressly required by this Agreement for the action in question. Such consent may be in one instrument or in several instruments, and shall have the same force and effect as a vote of the Percentage Interests of the Partners (expressly required by this Agreement). Such consent shall be filed with the General Partner. An action so taken shall be deemed to have been taken at a meeting held on the effective date so certified.

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C. Each Limited Partner may authorize any Person or Persons to act for him by proxy on all matters in which a Limited Partner is entitled to participate, including waiving notice of any meeting, or voting or participating at a meeting. Every proxy must be signed by the Limited Partner or his attorney-in-fact. No proxy shall be valid after the expiration of 11 months from the date thereof unless otherwise provided in the proxy. Every proxy shall be revocable at the pleasure of the Limited Partner executing it.

D. To the extent the Company is entitled to exercise its rights and remedies under the Pledge Agreement, the Company is hereby authorized to act for each Pledgor with respect to such Pledgor's Partnership Interests pledged pursuant to the Pledge Agreement by proxy on all matters in which such Pledgor is now or hereafter entitled to participate under this Agreement by reason of such pledged Partnership Interests, including waiving notice of any meeting, or voting or participating at a meeting. Notwithstanding anything to the contrary in Subparagraph C of this Section 14.2, the foregoing proxy is irrevocable and coupled with an interest, shall survive and not be affected by the subsequent Incapacity of any Pledgor and shall extend to such Pledgor's heirs, successors, assigns and personal representatives and shall be valid until such time as all collateral subject to the Pledge Agreement, if any, is returned to the Pledgors pursuant to the terms of the Pledge Agreement.

E. Each meeting of Partners shall be conducted by the General Partner or such other Person as the General Partner may appoint pursuant to such rules for the conduct of the meeting as the General Partner or such other Person deems appropriate.

ARTICLE 15
GENERAL PROVISIONS

Section 15.1 Addresses and Notice

Any notice, demand, request or report required or permitted to be given or made to a Partner or Assignee under this Agreement shall be in writing and shall be deemed given or made when delivered in person or when sent by certified first class United States mail, nationally recognized overnight delivery service or facsimile transmission to the Partner or Assignee at the address set forth in Exhibit A or such other address as the Partners shall notify the General Partner in writing.

Section 15.2 Titles and Captions

All article or section titles or captions in this Agreement are for convenience only. They shall not be deemed part of this Agreement and in no way define, limit, extend or describe the scope or intent of any provisions hereof. Except as specifically provided otherwise, references to "Articles" and "Sections" are to Articles and Sections of this Agreement.

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Section 15.3 Pronouns and Plurals

Whenever the context may require, any pronoun used in this Agreement shall include the corresponding masculine, feminine or neuter forms, and the singular form of nouns, pronouns and verbs shall include the plural and vice versa.

Section 15.4 Further Action

The parties shall execute and deliver all documents, provide all information and take or refrain from taking action as may be necessary or appropriate to achieve the purposes of this Agreement.

Section 15.5 Binding Effect

This Agreement shall be binding upon and inure to the benefit of the parties hereto and their heirs, executors, administrators, successors, legal representatives and permitted assigns.

Section 15.6 Creditors

Other than as expressly set forth herein with respect to Indemnitees, none of the provisions of this Agreement shall be for the benefit of, or shall be enforceable by, any creditor of the Partnership.

Section 15.7 Waiver

No failure or delay by any party to insist upon the strict performance of any covenant, duty, agreement or condition of this Agreement or to exercise any right or remedy consequent upon any breach thereof shall constitute waiver of any such breach or any other covenant, duty, agreement or condition.

Section 15.8 Counterparts

This Agreement may be executed in counterparts, all of which together shall constitute one agreement binding on all the parties hereto, notwithstanding that all such parties are not signatories to the original or the same counterpart. Each party shall become bound by this Agreement immediately upon affixing its signature hereto.

Section 15.9 Applicable Law

This Agreement shall be construed in accordance with and governed by the laws of the State of Delaware, without regard to the principles of conflicts of law.

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Section 15.10 Invalidity of Provisions

If any provision of this Agreement is or becomes invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein shall not be affected thereby.

Section 15.11 Limitation to Preserve REIT Status

To the extent that any amount paid or credited to the General Partner or its officers, directors, employees or agents pursuant to Section 7.4 or
Section 7.7 would constitute gross income to the General Partner for purposes of Sections 856(c)(2) or 856(c)(3) of the Code (a "General Partner Payment") then, notwithstanding any other provision of this Agreement, the amount of such General Partner Payments for any fiscal year shall not exceed the lesser of:

(i) an amount equal to the excess, if any, of (a) 4.17% of the General Partner's total gross income (but not including the amount of any General Partner Payments) for the fiscal year which is described in subsections (A) through (H) of Section 856(c)(2) of the Code over (b) the amount of gross income (within the meaning of Section 856(c)(2) of the Code) derived by the General Partner from sources other than those described in subsections (A) through (H) of Section 856(c)(2) of the Code (but not including the amount of any General Partner Payments); or

(ii) an amount equal to the excess, if any, of (a) 25% of the General Partner's total gross income (but not including the amount of any General Partner Payments) for the fiscal year which is described in subsections (A) through (I) of Section 856(c)(3) of the Code over (b) the amount of gross income (within the meaning of
Section 856(c)(3) of the Code) derived by the General Partner from sources other than those described in subsections (A) through (I) of Section 856(c)(3) of the Code (but not including the amount of any General Partner Payments);

provided, however, that General Partner Payments in excess of the amounts set forth in subparagraphs (i) and (ii) above may be made if the General Partner, as a condition precedent, obtains an opinion of tax counsel that the receipt of such excess amounts would not adversely affect the General Partner's ability to qualify as a REIT. To the extent General Partner Payments may not be made in a year due to the foregoing limitations, such General Partner Payments shall carry over and be treated as arising in the following year, provided, however, that such amounts shall not carry over for more than five years, and if not paid within such five year period, shall expire; provided further, that (i) as General Partner Payments are made, such payments shall be applied first to carry over amounts outstanding, if any, and (ii) with respect to carry over amounts for more than one Partnership Year, such payments shall be applied to the earliest Partnership Year first.

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Section 15.12 Entire Agreement

This Agreement contains the entire understanding and agreement among the Partners with respect to the subject matter hereof and supersedes any other prior written or oral understandings or agreements among them with respect thereto.

Section 15.13 No Rights as Stockholders

Nothing contained in this Agreement shall be construed as conferring upon the holders of Partnership Units any rights whatsoever as stockholders of the General Partner, including without limitation any right to receive dividends or other distributions made to stockholders of the General Partner or to vote or to consent or to receive notice as stockholders in respect of any meeting of stockholders for the election of directors of the General Partner or any other matter.

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IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first written above.

KILROY REALTY, L. P.

By: Kilroy Realty Corporation,
its General Partner

By:_______________________________________
John B. Kilroy, Jr.
President and Chief Executive Officer

LIMITED PARTNERS:

JOHN B. KILROY, SR.


John B. Kilroy, Sr.

JOHN B. KILROY, JR.


John B. Kilroy, Jr.

PATRICE BOUZAID
SUSAN HAHN
ANNE McCAHON
DANA PANTUSO

By:_______________________________________
John B. Kilroy, Sr.
Attorney-in-Fact

MARSHALL L. McDANIEL


Marshall L. McDaniel

S-1

A
PARTNERS, CONTRIBUTIONS AND PARTNERSHIP INTERESTS

A-1

EXHIBIT B
NOTICE OF REDEMPTION

The undersigned hereby [irrevocably] (i) exchanges ____________ Limited Partnership Units in Kilroy Realty, L.P. in accordance with the terms of the Limited Partnership Agreement of Kilroy Realty, L.P. dated as of __________, as amended, and the rights of Redemption referred to therein, (ii) surrenders such Limited Partnership Units and all right, title and interest therein, and (iii) directs that the cash (or, if applicable, REIT Shares) deliverable upon Redemption or exchange be delivered to the address specified below, and if applicable, that such REIT Shares be registered or placed in the name(s) and at the address(es) specified below.

Dated: ________________________

Name of Limited Partner:


(Signature of Limited Partner)


(Street Address)


(City) (State) (Zip Code)

Signature Guaranteed by:


Issue REIT Shares in the name of:

Please insert social security or identifying number:

Address (if different than above):

A-2

EXHIBIT C
CONSTRUCTIVE OWNERSHIP DEFINITION

The term "Constructively Owns" means ownership determined through the application of the constructive ownership rules of Section 318 of the Code, as modified by Section 856(d)(5) of the Code. Generally, these rules provide the following:

a. an individual is considered as owning the Ownership Interest that is owned, actually or constructively, by or for his spouse, his children, his grandchildren, and his parents;

b. an Ownership Interest that is owned, actually or constructively, by or for a partnership or estate is considered as owned proportionately by its partners or beneficiaries;

c. an Ownership Interest that is owned, actually or constructively, by or for a trust is considered as owned by its beneficiaries in proportion to the actuarial interest of such beneficiaries (provided, however, that in the case of a "grantor trust" the Ownership Interest will be considered as owned by the grantors);

d. if 10 percent or more in value of the stock in a corporation is owned, actually or constructively, by or for any person, such person shall be considered as owning the Ownership Interest that is owned, actually or constructively, by or for such corporation in that proportion which the value of the stock which such person so owns bears to the value of all the stock in such corporation;

e. an Ownership Interest that is owned, actually or constructively, by or for a partner of a partnership or a beneficiary of an estate or trust shall be considered as owned by the partnership, estate, or trust (or, in the case of a grantor trust, the grantors);

f. if 10 percent or more in value of the stock in a corporation is owned, actually or constructively, by or for any person, such corporation shall be considered as owning the Ownership Interest that is owned, actually or constructively, by or for such person;

g. if any person has an option to acquire an Ownership Interest (including an option to acquire an option or any one of a series of such options), such Ownership Interest shall be considered as owned by such person;

h. an Ownership Interest that is constructively owned by a person by reason of the application of the rules described in paragraphs (a) through (g) above shall, for purposes of applying paragraphs (a) through (g), be considered as actually owned by such person provided, however, that (i) an Ownership Interest constructively owned by an individual by reason of paragraph (a) shall not be considered as owned by him for purposes of again applying paragraph (a) in order to make another the constructive owner of such Ownership Interest, (ii) an Ownership Interest constructively owned by a partnership, estate, trust, or corporation by reason of the application of paragraphs (e) or (f) shall not be considered as owned by it for purposes of applying paragraphs (b), (c), or (d) in order to make another the constructive owner of such Ownership Interest,
(iii) if an Ownership Interest may be considered as owned by an individual under paragraphs (a) or (g), it shall be considered as owned by him under paragraph
(g), and (iv) for purposes of the above described rules, an S corporation shall be treated as a partnership and any stockholder of the S corporation shall be treated as a partner of such partnership except that this rule shall not apply for purposes of determining whether stock in the S corporation is constructively owned by any person.

i. For purposes of the above summary of the constructive ownership rules, the term "Ownership Interest" means the ownership of stock with respect to a corporation and, with respect to any other type of entity, the ownership of an interest in either its assets or net profits.

C-1

EXHIBIT D
FORM OF PARTNERSHIP UNIT CERTIFICATE

CERTIFICATE FOR PARTNERSHIP UNITS OF
KILROY REALTY, L.P.

No. ____________________ ______________________ UNITS

Kilroy Realty Corporation as the General Partner of Kilroy Realty, L.P., a Delaware limited partnership (the "Operating Partnership"), hereby certifies that ______________________________________________________ is a Limited Partner of the Operating Partnership whose Partnership Interests therein, as set forth in the Agreement of Limited Partnership of Kilroy Realty, L.P., dated as of ______________, 1997 (as it may be amended, modified or supplemented from time to time in accordance with its terms, (the "Partnership Agreement"), under which the Operating Partnership is existing and as filed in the office of the Delaware
[State Department of Assessments and Taxation] (copies of which are on file at the Operating Partnership's principal office at __________________________________________________, represent ______________ units of limited partnership interest in the Operating Partnership (the "Partnership Units").

THE PARTNERSHIP UNITS REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT MAY NOT BE TRANSFERRED, SOLD, ASSIGNED, PLEDGED, HYPOTHECATED OR OTHERWISE DISPOSED OF UNLESS SUCH TRANSFER, SALE, ASSIGNMENT, PLEDGE, HYPOTHECATION OR OTHER DISPOSITION COMPLIES WITH THE PROVISIONS OF THE PARTNERSHIP AGREEMENT (A COPY OF WHICH IS ON FILE WITH THE OPERATING PARTNERSHIP). EXCEPT AS OTHERWISE PROVIDED IN THE PARTNERSHIP AGREEMENT, NO TRANSFER, SALE, ASSIGNMENT, PLEDGE, HYPOTHECATION OR OTHER DISPOSITION OF THE PARTNERSHIP UNITS REPRESENTED BY THIS CERTIFICATE MAY BE MADE EXCEPT (A) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR (B) IF THE OPERATING PARTNERSHIP HAS BEEN FURNISHED WITH A SATISFACTORY OPINION OF COUNSEL FOR THE HOLDER OF THE PARTNERSHIP UNITS REPRESENTED BY THIS CERTIFICATE THAT SUCH TRANSFER, SALE ASSIGNMENT, PLEDGE, HYPOTHECATION OR OTHER DISPOSITION IS EXEMPT FROM THE PROVISIONS OF SECTION 5 OF THE ACT AND THE RULES AND REGULATIONS IN EFFECT THEREUNDER.

DATED: _____________________________, 1997.

KILROY REALTY CORPORATION

General Partner of
Kilroy Realty, L.P.

ATTEST:

By: _____________________________ By: _____________________________

D-1

EXHIBIT E
SCHEDULE OF PARTNERS' OWNERSHIP
WITH RESPECT TO TENANTS

E-1

EXHIBIT F
SCHEDULE OF REIT SHARES
ACTUALLY OR CONSTRUCTIVELY OWNED BY LIMITED PARTNERS
OTHER THAN THOSE ACQUIRED PURSUANT TO AN EXCHANGE

F-1

EXHIBIT G
SCHEDULE OF CERTAIN PROPERTY OF THE PARTNERSHIP

2260 E. Imperial Highway, El Segundo, California

G-1

EXHIBIT 10.2

REGISTRATION RIGHTS AGREEMENT

THIS REGISTRATION RIGHTS AGREEMENT, dated as of __________, 1997, is entered into by and among Kilroy Realty Corporation, a Maryland corporation (the "Company" or the "REIT"), Kilroy Realty, L.P., a Delaware limited partnership (the "Operating Partnership"), and the unit holders whose names are set forth on the signature pages hereto (each, a "Unit Holder" and collectively, the "Unit Holders").

RECITALS

WHEREAS, in connection with the initial public offering of shares of the Company's common stock, par value $.01 per share (the "Common Stock"), the Company, the Operating Partnership and the Unit Holders as the parties which hold ownership interests in certain office properties and other assets (the "Properties") will engage in certain formation transactions whereby the Unit Holders will contribute to the Operating Partnership their interests in the Properties;

WHEREAS, the Unit Holders will receive units of limited partnership interests ("OP Units") in the Operating Partnership in exchange for their respective interests in the Properties and the Company will be the general partner of the Operating Partnership;

WHEREAS, pursuant to the Partnership Agreement (as defined below), OP Units owned by the Unit Holders will be redeemable for cash or exchangeable for shares of Common Stock of the Company upon the terms and subject to the conditions contained therein; and

WHEREAS, the Unit Holders are willing to contribute their respective interests in the Properties in consideration of receiving the registration rights provided for in this Agreement;

NOW, THEREFORE, in consideration of the premises and the mutual agreements herein contained, and for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

ARTICLE I
DEFINITIONS

SECTION 1.1. Definitions. In addition to the definitions set forth above, the following terms, as used herein, have the following meanings:

"Affiliate" of any Person means any other Person directly or indirectly controlling or controlled by or under common control with such Person. For the purposes of this definition, "control" when used with respect to any Person, means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of such Person,

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whether through the ownership of voting securities, by contract or otherwise; and the terms "controlling" and "controlled" have meanings correlative to the foregoing.

"Agreement" means this Registration Rights Agreement, as it may be amended, supplemented or restated from time to time.

"Articles of Incorporation" means the Articles of Amendment and Restatement of the Company as filed with the Secretary of State of the State of Maryland on _____________, 1997, as the same may be amended, modified or restated from time to time.

"Business Day" means any day except a Saturday, Sunday or other day on which commercial banks in New York, New York or Los Angeles, California are authorized by law to close.

"Code" means the Internal Revenue Code of 1986, as amended from time to time or any successor statute thereto, as interpreted by the applicable regulations thereunder.

"Commission" means the Securities and Exchange Commission.

"Exchange Act" means the Securities Exchange Act of 1934, as amended.

"Exchangeable OP Units" means OP Units which may be redeemable for cash or exchangeable for Common Stock pursuant to Section 8.6 of the Partnership Agreement (without regard to any limitations on the exercise of such exchange right as a result of the Ownership Limit Provisions, as defined below).

"General Partner" means the Company or its successors as general partner of the Operating Partnership.

"Holder" means any Unit Holder who is the record or beneficial owner of any Registrable Security or any assignee or transferee of such Registrable Security (including assignments or transfers of Registrable Securities to such assignees or transferees as a result of the foreclosure on any loans secured by such Registrable Securities) unless such Registrable Security is acquired in a public distribution pursuant to a registration statement under the Securities Act or pursuant to transactions exempt from registration under the Securities Act, in each such case where securities sold in such transaction may be resold without subsequent registration under the Securities Act.

"Incapacitated" shall have the meaning set forth in the Partnership Agreement.

"Initial Public Offering" means the offering of the Company's Common Stock pursuant to the Form S-11 Registration Statement (No. 333-15553) filed by the Company with the Commission under the Securities Act.

"Ownership Limit Provisions" mean the various provisions of the Articles of Incorporation set forth in Article IV thereof restricting the ownership of Common Stock by certain Persons to specified percentages of the outstanding Common Stock.

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"Partnership Agreement" means the amended and restated agreement of limited partnership of the Operating Partnership dated as of _________, 1997, as the same may be amended, modified or restated from time to time.

"Person" means an individual or a corporation, partnership, limited liability company, association, trust, or any other entity or organization, including a government or political subdivision or an agency or instrumentality thereof.

"Piggy-Back Registration" means a Piggy-Back Registration as defined in Section 2.2 hereof.

"REIT" means a real estate investment trust under Section 856 through
Section 860 of the Code.

"Registrable Securities" means shares of Common Stock of the Company at any time owned, either of record or beneficially, by any Holder and no matter how acquired (including, without limitation, shares of Common Stock issuable upon exchange of Exchangeable OP Units) until (i) a registration statement covering such securities has been declared effective by the Commission and such shares have been sold or transferred pursuant to such effective registration statement, (ii) such shares are sold under circumstances in which all of the applicable conditions of Rule 144 under the Securities Act (or any similar provisions then in force) under the Securities Act are met or under which such shares may be sold pursuant to Rule 144(k) under the Securities Act or (iii) such shares have been otherwise transferred in a transaction that would constitute a sale thereof under the Securities Act, the Company has delivered a new certificate or other evidence of ownership for such shares not bearing the Securities Act restricted stock legend and such shares may be resold without subsequent registration under the Securities Act.

"Securities Act" means the Securities Act of 1933, as amended.

"Selling Holder" means a Holder who is selling Registrable Securities pursuant to a registration statement under the Securities Act pursuant to this Agreement.

"Underwriter" means a securities dealer who purchases any Registrable Securities as principal and not as part of such dealer's market-making activities.

ARTICLE II
REGISTRATION RIGHTS

SECTION 2.1. Shelf Registration. Commencing on or after the second anniversary of the date that the Common Stock is first offered to the public in the Initial Public Offering, the Company shall prepare and file a "shelf" registration statement with respect to shares of Common Stock issuable upon the exchange of Exchangeable OP Units covering the issuance by the Company and the resale thereof by the Holders on an appropriate form for an offering to be made on a continuous basis pursuant to Rule 415 under the Securities Act (the "Shelf Registration Statement") and shall use its best efforts to cause the Shelf Registration

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Statement to be declared effective on or as soon as practicable after such second anniversary, and to keep such Shelf Registration Statement continuously effective for a period ending when all shares of Common Stock covered by the Shelf Registration Statement have been issued and resold.

SECTION 2.2. Piggy-Back Registration. (a) If the Company proposes to file a registration statement under the Securities Act with respect to an offering by the Company for its own account (a "Primary Registration") or for the account of any of its respective securityholders of Common Stock (other than
(i) any registration statement filed by the Company under the Securities Act relating to an offering of Common Stock for its own account as a result of the exercise of the exchange rights set forth in Section 8.6 of the Partnership Agreement, and covering the resale by the Holders of the shares of common stock received in such exchange, or (ii) a registration statement on Form S-4 or S-8 (or any substitute form that may be adopted by the Commission) or filed in connection with an exchange offer or offering of securities solely to the Company's existing securityholders) (a "Secondary Registration"), then the Company shall give written notice of such proposed filing to the Holders of Registrable Securities as soon as practicable (but in no event less than ten
(10) days before the anticipated filing date), and such notice shall offer such Holders the opportunity to register such number of shares of Registrable Securities as each such Holder may request (a "Piggy-Back Registration"). The Company shall use its commercially reasonable efforts to cause the managing Underwriter or Underwriters of a proposed underwritten offering to permit the Registrable Securities requested to be included in a Piggy-Back Registration to be included on the same terms and conditions as any similar securities of the Company included therein.

(b) Withdrawal from Registration. Any Holder requesting inclusion of Registrable Securities pursuant to this Section 2.2 may, at any time prior to the effective date of the registration statement relating to such registration, revoke such request by delivering written notice of such revocation to the Company; provided, however, that if the Company, in consultation with its financial and legal advisors, determines that such revocation would materially delay the registration or otherwise require a recirculation of the prospectus contained in the registration statement, then such Holder shall have no such right to revoke its request. If the withdrawal of any Registrable Securities would allow, within the marketing limitations set forth above, the inclusion in the underwriting of a greater number of shares of Registrable Securities, then, to the extent practicable and without delaying the underwriting, the Company shall offer to the Holders an opportunity to include additional shares of Registrable Securities in the proportions discussed in Section 2.3 below.

(c) Termination or Withdrawal by the Company. The Company shall have the right to terminate or withdraw any registration initiated by it under this
Section 2.2 prior to the effectiveness of such registration whether or not any Holder has elected to include securities in such registration.

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SECTION 2.3. Reduction of Offering. Notwithstanding anything contained herein, if the managing Underwriter or Underwriters of an offering described in Section 2.2 hereof are of the opinion that (i) the size of the offering that the Holders, the Company and/or such other persons intend to make or (ii) the kind of securities that the Holders, the Company and/or any other persons or entities intend to include in such offering are such that the success of the offering would be materially and adversely affected by inclusion of the Registrable Securities requested to be included, then (A) if the size of the offering is the basis of such Underwriter's opinion, the amount of securities to be offered for the accounts of Holders shall be reduced pro rata (according to the Registrable Securities proposed for registration) to the extent necessary to reduce the total amount of securities to be included in such offering to the amount recommended by such managing Underwriter or Underwriters; provided that if securities are being offered for the account of other persons or entities as well as the Company, then (1) in the case of a Primary Registration, the reduction in the amount of securities requested to be offered shall be made first pro rata among securities offered for the accounts of Holders and such other persons or entities, and (2) in the case of a Secondary Registration, the reduction in the amount of securities requested to be offered shall be made in accordance with the terms of the registration rights agreement pursuant to which such Secondary Registration is made, provided that if any such registration rights agreement is silent with respect to reductions in shares being registered thereunder, then with respect to the Registrable Securities intended to be offered by Holders, the proportion by which the amount of such class of securities intended to be offered by Holders is reduced shall not exceed the proportion by which the amount of such class of securities intended to be offered by such other persons or entities is reduced and (B) if the combination of securities to be offered is the basis of such Underwriter's opinion, (x) the Registrable Securities to be included in such offering shall be reduced as described in clause (A) above (subject to the proviso in clause (A)) or, (y) if the actions described in clause (x) would, in the judgment of the managing Underwriter, be insufficient to substantially eliminate the adverse effect that inclusion of the Registrable Securities requested to be included would have on such offering, such Registrable Securities will be excluded from such offering.

SECTION 2.4. Registration Procedures; Filings; Information. In connection with any Shelf Registration Statement under Section 2.1 hereof, the Company will use its best efforts to effect the registration and the sale of such Registrable Securities in accordance with the intended method of disposition thereof as quickly as practicable, and in connection with any such request:

(a) The Company will as expeditiously as possible prepare and file with the Commission a registration statement on any form for which the Company then qualifies or which counsel for the Company shall deem appropriate and which form shall be available for the sale of the Registrable Securities to be registered thereunder in accordance with the intended method of distribution thereof, and use its best efforts to cause such filed registration statement to become and remain effective for a period of not less than 180 days or in the case of a Shelf Registration Statement as provided in Section 2.1 hereof.

(b) The Company will, if requested, prior to filing a registration statement or prospectus or any amendment or supplement thereto, furnish to each Selling Holder

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and each Underwriter, if any, of the Registrable Securities covered by such registration statement or prospectus copies of such registration statement or prospectus or any amendment or supplement thereto as proposed to be filed, and thereafter furnish to such Selling Holder and Underwriter, if any, such number of conformed copies of such registration statement, each amendment and supplement thereto (in each case including all exhibits thereto and documents incorporated by reference therein), the prospectus included in such registration statement (including each preliminary prospectus) and such other documents as such Selling Holder or Underwriter may reasonably request in order to facilitate the disposition of the Registrable Securities owned by such Selling Holder.

(c) After the filing of the registration statement, the Company will promptly notify each Selling Holder of Registrable Securities covered by such registration statement of any stop order issued or threatened by the Commission and take all reasonable actions required to prevent the entry of such stop order or to remove it if entered.

(d) The Company will use its best efforts to (i) register or qualify the Registrable Securities under such other securities or blue sky laws of such jurisdictions in the United States (where an exemption is not available) as any Selling Holder or managing Underwriter or Underwriters, if any, reasonably (in light of such Selling Holder's intended plan of distribution) requests and (ii) cause such Registrable Securities to be registered with or approved by such other governmental agencies or authorities as may be necessary by virtue of the business and operations of the Company and do any and all other acts and things that may be reasonably necessary or advisable to enable such Selling Holder to consummate the disposition of the Registrable Securities owned by such Selling Holder; provided that the Company will not be required to (A) qualify generally to do business in any jurisdiction where it would not otherwise be required to qualify but for this paragraph (d), (B) subject itself to taxation in any such jurisdiction or (C) consent to general service of process in any such jurisdiction.

(e) The Company will immediately notify each Selling Holder of such Registrable Securities, at any time when a prospectus relating thereto is required to be delivered under the Securities Act, of the occurrence of an event requiring the preparation of a supplement or amendment to such prospectus so that, as thereafter delivered to the purchasers of such Registrable Securities, such prospectus will not contain an untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances then existing, not misleading and promptly make available to each Selling Holder a reasonable number of copies of any such supplement or amendment.

(f) The Company will enter into customary agreements (including an underwriting agreement, if any, in customary form) and take such other actions as are reasonably required in order to expedite or facilitate the disposition of such Registrable Securities.

(g) The Company will make available for inspection by any Selling Holder of such Registrable Securities, any Underwriter participating in any disposition pursuant to such registration statement and any attorney, accountant or other professional retained by any such Selling Holder or Underwriter (collectively, the "Inspectors"), all financial and other

6

records, pertinent corporate documents and properties of the Company (collectively, the "Records") as shall be reasonably necessary to enable them to exercise their due diligence responsibility, and cause the Company's officers, directors and employees to supply all information reasonably requested by any Inspectors in connection with such registration statement. Records which the Company determines, in good faith, to be confidential and which it notifies the Inspectors are confidential shall not be disclosed by the Inspectors unless (i) the disclosure of such Records is necessary to avoid or correct a misstatement or omission in such registration statement or (ii) the release of such Records is ordered pursuant to a subpoena or other order from a court of competent jurisdiction. Each Selling Holder of such Registrable Securities agrees that information obtained by it as a result of such inspections shall be deemed confidential and shall not be used by it as the basis for any market transactions in the securities of the company or its Affiliates or otherwise disclosed by it unless and until such is made generally available to the public. Each Selling Holder of such Registrable Securities further agrees that it will, upon learning that disclosure of such Records is sought in a court of competent jurisdiction, give notice to the Company and allow the Company, at its expense, to undertake appropriate action to prevent disclosure of the Records deemed confidential.

(h) The Company will furnish to each Selling Holder and to each Underwriter, if any, a signed counterpart, addressed to such Selling Holder or Underwriter, of (i) an opinion or opinions of counsel to the Company and (ii) a comfort letter or comfort letters from the Company's independent public accountants (to the extent permitted by the standards of the American Institute of Certified Public Accountants), each in customary form and covering such matters of the type customarily covered by opinions or comfort letters, as the case may be, as the Holders of a majority of the Registrable Securities included in such offering or the managing Underwriter or Underwriters therefor reasonably requests.

(i) The Company will otherwise use its best efforts to comply with all applicable rules and regulations of the Commission, and make available to its securityholders, as soon as reasonably practicable, an earnings statement covering a period of twelve (12) months, beginning within three (3) months after the effective date of the registration statement, which earnings statement shall satisfy the provisions of Section 11(a) of the Securities Act and Rule 158 of the Commission promulgated thereunder (or any successor rule or regulation hereafter adopted by the Commission).

(j) The Company will use its best efforts to cause all such Registrable Securities to be listed on each securities exchange on which similar securities issued by the Company are then listed.

The Company may require, as a condition precedent to the obligations of the Company under the Agreement, each Selling Holder of Registrable Securities to promptly furnish in writing to the Company such information regarding such selling Holder, the Registrable Securities held by it and the intended method of distribution of the Registrable Securities as the Company may from time to time reasonably request and such other information as may be legally required in connection with such registration.

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Each Selling Holder agrees that, upon receipt of any notice from the Company of the happening of any event of the kind described in Section 2.4(e) hereof, such Selling Holder will forthwith discontinue disposition of Registrable Securities pursuant to the registration statement and prospectus covering such Registrable Securities until such Selling Holder's receipt of the copies of the supplemented or amended prospectus contemplated by Section 2.4(e) hereof, and, if so directed by the Company, such Selling Holder will deliver to the Company all copies, other than permanent file copies then in such Selling Holder's possession, of the most recent prospectus covering such Registrable Securities at the time of receipt of such notice. Each Selling Holder of Registrable Securities agrees that it will immediately notify the Company at any time when a prospectus relating to the registration of such Registrable securities is required to be delivered under the Securities Act of the happening of an event as a result of which information previously furnished by such Selling Holder to the Company in writing for inclusion in such prospectus contains an untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances in which they were made, not misleading. In the event the Company shall give such notice, the Company shall extend the period during which such registration statement shall be maintained effective (including the period referred to in Section 2.4(a) hereof) by the number of days during the period from and including the date of the giving of notice pursuant to Section 2.4(e) hereof to the date when the Company shall make available to the Selling Holders of Registrable Securities covered by such registration statement a prospectus supplemented or amended to conform with the requirements of Section 2.4(e) hereof.

SECTION 2.5. Registration Expenses. In connection with any registration statement required to be filed hereunder, the Company shall pay the following registration expenses incurred in connection with the registration hereunder (the "Registration Expenses"): (i) all registration and filing fees,
(ii) fees and expenses of compliance with securities or blue sky laws (including reasonable fees and disbursements of counsel in connection with blue sky qualifications of the Registrable Securities), (iii) printing expenses, (iv) internal expenses (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), (v) the fees and expenses incurred in connection with the listing of the Registrable Securities on each securities exchange on which similar securities issued by the Company are then listed, (vi) reasonable fees and disbursements of counsel for the Company and customary fees and expenses for independent certified public accountants retained by the Company (including the expenses of any comfort letters or costs associated with the delivery by independent certified public accountants of a comfort letter or comfort letters requested pursuant to Section 2.4(h) hereof), (vii) the reasonable fees and expenses of any special experts retained by the Company in connection with such registration, and (viii) reasonable fees and expenses of one counsel (who shall be reasonably acceptable to the Company) for the Selling Holders. The Company shall have no obligation to pay any underwriting fees, discounts or commissions attributable to the sale of Registrable Securities, or any out-of-pocket expenses of the Holders (or the agents who manage their accounts) or any transfer taxes relating to the registration or sale of the Registrable Securities.

SECTION 2.6. Indemnification by the Company. The Company agrees to indemnify and hold harmless each Selling Holder of Registrable Securities, its officers, directors

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and agents, and each Person, if any, who controls such Selling Holder within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act from and against any and all losses, claims, damages and liabilities caused by any untrue statement or alleged untrue statement of a material fact contained in any registration statement or prospectus relating to the Registrable Securities (as amended or supplemented if the Company shall have furnished any amendments or supplements thereto) or any preliminary prospectus, or caused by any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances in which they were made, not misleading, except insofar as such losses, claims, damages or liabilities are caused by any such untrue statement or omission or alleged untrue statement or omission based upon information furnished in writing to the Company by such Selling Holder or on such Selling Holder's behalf expressly for inclusion therein. The Company also agrees to indemnify any Underwriters of the Registrable Securities, their officers and directors and each Person who controls such Underwriters within the meaning of
Section 15 of the Securities Act or Section 20 of the Exchange Act on substantially the same basis as that of the indemnification of the Selling Holders provided in this Section 2.6, provided that the foregoing indemnity with respect to any preliminary prospectus shall not inure to the benefit of any Underwriter of the Registrable Securities from whom the person asserting any such losses, claims, damages or liabilities purchased the Registrable Securities which are the subject thereof if such person did not receive a copy of the prospectus (or the prospectus as supplemented) at or prior to the confirmation of the sale of such Registrable Securities to such person in any case where such delivery is required by the Securities Act and the untrue statement or omission of a material fact contained in such preliminary prospectus was corrected in the prospectus (or the prospectus as supplemented).

SECTION 2.7. Indemnification by Holders of Registrable Securities. Each Selling Holder agrees, severally but not jointly, to indemnify and hold harmless the Company, its officers, directors and agents and each Person, if any, who controls the Company within the meaning of either Section 15 of the Securities Act or Section 20 of the Exchange Act to the same extent as the foregoing indemnity from the Company to such Selling Holder, but only with respect to information relating to such Selling Holder furnished in writing by such Selling Holder or on such Selling Holder's behalf expressly for use in any registration statement or prospectus relating to the Registrable Securities, or any amendment or supplement thereto, or any preliminary prospectus. In case any action or proceeding shall be brought against the Company or its officers, directors or agents or any such controlling person, in respect of which indemnity may be sought against such Selling Holder, such Selling Holder shall have the rights and duties given to the Company, and the Company or its officers, directors or agents or such controlling person shall have the rights and duties given to such Selling Holder, by Section 2.6 hereof. Each Selling Holder also agrees to indemnify and hold harmless Underwriters of the Registrable Securities, their officers and directors and each Person who controls such Underwriters within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act on substantially the same basis as that of the indemnification of the Company provided in this Section 2.7.

SECTION 2.8. Conduct of Indemnification Proceedings. In case any proceeding (including any governmental investigation) shall be instituted involving any person in respect of

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which indemnity may be sought pursuant to Sections 2.6 or 2.7 hereof, such person (an "Indemnified Party") shall promptly notify the person against whom such indemnity may be sought (an "Indemnifying Party") in writing and the Indemnifying Party shall assume the defense thereof, including the employment of counsel reasonably satisfactory to such Indemnified Party, and shall assume the payment of all fees and expenses. In any such proceeding, any Indemnified Party shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such Indemnified Party unless (i) the Indemnifying Party and the Indemnified Party shall have mutually agreed to the retention of such counsel or (ii) the named parties to any such proceeding (including any impleaded parties) include both the Indemnified Party and the Indemnifying Party and representation of both parties by the same counsel would be inappropriate due to actual or potential differing interests between them. It is understood that the Indemnifying Party shall not, in connection with any proceeding or related proceedings in the same jurisdiction, be liable for the reasonable fees and expenses of more than one separate firm of attorneys (in addition to any local counsel) at any time for all such Indemnified Parties, and that all such fees and expenses shall be reimbursed as they are incurred. In the case of any such separate firm for the Indemnified Parties, such firm shall be designated in writing by (i) in the case of Persons indemnified pursuant to
Section 2.6 hereof, by the Selling Holders which owned a majority of the Registrable Securities sold under the applicable registration statement and (ii) in the case of Persons indemnified pursuant to Section 2.7 hereof, the Company. The Indemnifying Party shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent, or if there be a final judgment for the plaintiff, the Indemnifying Party shall indemnify and hold harmless such Indemnified Parties from and against any loss or liability (to the extent stated above) by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an Indemnified Party shall have requested an Indemnifying Party to reimburse the Indemnified Party for fees and expenses of counsel as contemplated by the third sentence of this paragraph, the Indemnifying Party agrees that it shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than thirty (30) Business Days after receipt by such Indemnifying Party of the aforesaid request and (ii) such Indemnifying Party shall not have reimbursed the Indemnified Party in accordance with such request prior to the date of such settlement. No Indemnifying Party shall, without the prior written consent of the Indemnified Party, effect any settlement of any pending or threatened proceeding in which any Indemnified Party is or could have been a party and indemnity could have been sought hereunder by such Indemnified Party, unless such settlement includes an unconditional release of such Indemnified Party from all liability arising out of such proceeding.

SECTION 2.9. Contribution. If the indemnification provided for in Sections 2.6 or 2.7 hereof is unavailable to an Indemnified Party or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each such Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall contribute to the amount paid or payable by such Indemnified Party as a result of such losses, claims, damages or liabilities (i) as between the Company and the Selling Holders on the one hand and the Underwriters on the other, in such proportion as is

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appropriate to reflect the relative benefits received by the Company and the Selling Holders on the one hand and the Underwriters on the other from the offering of the securities, or if such allocation is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits but also the relative fault of the Company and the Selling Holders on the one hand and of the Underwriters on the other in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations and (ii) as between the Company on the one hand and each Selling Holder on the other, in such proportion as is appropriate to reflect the relative fault of the Company and of each Selling Holder in connection with such statements or omissions which resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative benefits received by the Company and the Selling Holders on the one hand and the Underwriters on the other shall be deemed to be in the same proportion as the total proceeds from the offering
(net of underwriting discounts and commissions but before deducting expenses)
received by the Company and the Selling Holders bear to the total underwriting discounts and commissions received by the Underwriters, in each case as set forth in the table on the cover page of the prospectus. The relative fault of the Company and the Selling Holders on the one hand and of the Underwriters on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company and the Selling Holders or by the Underwriters. The relative fault of the Company on the one hand and of each Selling Holder on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company or such Selling Holder, and the Company's and the Selling Holder's relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

The Company and the Selling Holders agree that it would not be just and equitable if contribution pursuant to this Section 2.9 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in the immediately preceding paragraph. The amount paid or payable by an Indemnified Party as a result of the losses, claims, damages or liabilities referred to in Sections 2.6 and 2.7 hereof shall be deemed to include, subject to the limitations set forth above, any legal or other expenses reasonably incurred by such Indemnified Party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section 2.9, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission, and no Selling Holder shall be required to contribute any amount in excess of the amount by which the total price at which the securities of such Selling Holder were offered to the public exceeds the amount of any damages which such Selling Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Selling Holder's obligations to contribute pursuant to this Section 2.9 are several in the

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proportion that the proceeds of the offering received by such Selling Holder bears to the total proceeds of the offering received by all the Selling Holders and not joint.

SECTION 2.10. Participation in Underwritten Registrations. No Person may participate in any underwritten registration hereunder unless such Person
(a) agrees to sell such Person's securities on the basis provided in any underwriting arrangements approved by the Persons entitled hereunder to approve such arrangements and (b) completes and executes all questionnaires, powers of attorney, indemnities, underwriting agreements and other documents in customary form and reasonably required under the terms of such underwriting arrangements and these registration rights provided for in this Article II.

SECTION 2.11. Rule 144. The Company covenants that it will file any reports required to be filed by it under the Securities Act and the Exchange Act and that it will take such further action as any Holder may reasonably request, all to the extent required from time to time to enable Holders to sell Registrable Securities without registration under the Securities Act within the limitation of the exemptions provided by (a) Rule 144 under the Securities Act, as such Rule may be amended from time to time, or (b) any similar rule or regulation hereafter adopted by the Commission. Upon the request of any Holder, the Company will deliver to such Holder a written statement as to whether it has complied with such requirements.

SECTION 2.12. Holdback Agreements.

(a) Restrictions on Public Sale by Holder of Registrable Securities.
To the extent not inconsistent with applicable law, each Holder whose securities are included in a registration statement agrees, upon receipt of prior written notice from the Company received not later than 17 days prior to the effective date of such registration statement, not to effect any sale or distribution of the issue being registered or a similar security of the Company, or any securities convertible into or exchangeable or exercisable for such securities, including a sale pursuant to Rule 144 under the Securities Act, during the 14 days prior to, and during the 90-day period beginning on, the effective date of such registration statement (except as part of such registration), if and to the extent requested in writing by the Company in the case of a non-underwritten public offering or if and to the extent requested in writing by the managing Underwriter or Underwriters in the case of an underwritten public offering.

(b) If the Company determines in its good faith judgment that the filing of the Shelf Registration Statement under Section 2.1 hereof or the use of any related prospectus would require the disclosure of non-public material information that the Company has a bona fide business purpose for preserving as confidential or the disclosure of which would impede the Company's ability to consummate a material transaction, and that the Company is not otherwise required by applicable securities laws or regulations to disclose, upon written notice of such determination by the Company, the rights of the Holders to offer, sell or distribute any Registrable Securities pursuant to the Shelf Registration Statement or to require the Company to take action with respect to the registration or sale of any Registrable Securities pursuant to the Shelf Registration Statement shall be suspended until the earlier of (i) the date upon which the Company notifies the Holders in writing that suspension of such rights for the grounds set forth

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in this Section 2.11(b) is no longer necessary and (ii) 180 days. The Company agrees to give such notice as promptly as practicable following the date that such suspension of rights is no longer necessary.

(c) If all reports required to be filed by the Company pursuant to the Exchange Act have not been filed by the required date without regard to any extension, or if the consummation of any business combination by the Company has occurred or is probable for purposes of Rule 3-05 or Article 11 of Regulation S-X under the Act, upon written notice thereof by the Company to the Holders, the rights of the Holders to offer, sell or distribute any Registrable Securities pursuant to the Shelf Registration Statement or to require the Company to take action with respect to the registration or sale of any Registrable Securities pursuant to the Shelf Registration Statement shall be suspended until the date on which the Company has filed such reports or obtained and filed the financial information required by Rule 3-05 or Article 11 of Regulation S-X to be included or incorporated by reference, as applicable, in the Shelf Registration Statement, and the Company shall notify the Holders as promptly as practicable when such suspension is no longer required.

ARTICLE III
MISCELLANEOUS

SECTION 3.1. New York Stock Exchange Listing. In the event that the Company shall issue any Common Stock in exchange for OP Units pursuant to
Section 8.6 of the Partnership Agreement, then in any such case the Company agrees to cause any such shares of Common Stock to be listed on the New York Stock Exchange prior to or concurrently with the issuance thereof by the Company.

SECTION 3.2. Remedies. In addition to being entitled to exercise all rights provided herein and granted by law, including recovery of damages, the Holders shall be entitled to specific performance of the rights under this Agreement. The Company agrees that monetary damages would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Agreement and hereby agrees to waive the defense in any action for specific performance that a remedy at law would be adequate.

SECTION 3.3. Amendments and Waivers. The provisions of this Agreement, including the provisions of this sentence, may not be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given without the prior written consent of the Company and the Holders or any such Holder's representative if any such Holder is Incapacitated. No failure or delay by any party to insist upon the strict performance of any covenant, duty, agreement or condition of this Agreement or to exercise any right or remedy consequent upon any breach thereof shall constitute a waiver of any such breach or any other covenant, duty, agreement or condition.

SECTION 3.4. Notices. All notices and other communications in connection with this Agreement shall be made in writing by hand delivery, registered first-class mail, telex, telecopier, or air courier guaranteeing overnight delivery:

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(1) if to any Unit Holder, initially c/o Kilroy Realty Corporation, 2250 East Imperial Highway, El Segundo, California 90245 (Attention: President and Chief Executive Officer), or to such other address and to such other Persons as the Unit Holders may hereafter specify in writing; and

(2) if to the Company, initially at 2250 East Imperial Highway, El Segundo, California 90245 (Attention: President and Chief Executive Officer), or to such other address as the Company may hereafter specify in writing.

All such notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; when received if deposited in the mail, postage prepaid, if mailed; when answered back, if telexed; when receipt acknowledged, if telecopied; and on the next business day, if timely delivered to an air courier guaranteeing overnight delivery.

SECTION 3.5. Successors and Assigns. Except as expressly provided in this Agreement, the rights and obligations of the Holders under this Agreement shall not be assignable by any Holder to any Person that is not a Holder. This Agreement shall be binding upon the parties hereto and their respective successors and assigns.

SECTION 3.6. Counterparts. This Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. Each party shall become bound by this Agreement immediately upon affixing its signature hereto.

SECTION 3.7. Governing Law. This Agreement shall be governed by and construed in accordance with the internal laws of the State of California without regard to the choice of law provisions thereof.

SECTION 3.8. Severability. In the event that any one or more of the provisions contained herein, or the application thereof in any circumstance, is held invalid, illegal or unenforceable, the validity, legality and enforceability of any such provision in every other respect and of the remaining provisions contained herein shall not be affected or impaired thereby.

SECTION 3.9. Entire Agreement. This Agreement is intended by the parties as a final expression of their agreement and intended to be a complete and exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained herein. There are no restrictions, promises, warranties or undertakings, other than those set forth or referred to herein with respect to the registration rights granted by the Company with respect to the Registrable Securities. This Agreement supersedes all prior agreements and understandings between the parties with respect to such subject matter.

SECTION 3.10. Headings. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof.

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SECTION 3.11. No Third Party Beneficiaries. Nothing express or implied herein is intended or shall be construed to confer upon any person or entity, other than the parties hereto and their respective successors and assigns, any rights, remedies or other benefits under or by reason of this Agreement.

IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first written above.

KILROY REALTY CORPORATION,
a Maryland corporation

By: _____________________________________
John B. Kilroy, Jr.
President and Chief Executive Officer

KILROY REALTY, L.P., a Delaware limited
partnership

By: Kilroy Realty Corporation,
its general partner

By: _____________________________________
John B. Kilroy, Jr.
President and Chief Executive Officer

KILROY INDUSTRIES,

a California corporation

By: _____________________________________
John B. Kilroy, Jr.
President and Chief Executive Officer

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PATRICE BOUZAID
SUSAN HAHN
ANNE McCAHON
DANA PANTUSO

By: _____________________________________
John B. Kilroy, Sr.
Attorney-in-Fact

MARSHALL McDANIEL


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EXHIBIT 10.3

OMNIBUS OPTION AGREEMENT

BY AND AMONG

KILROY REALTY, L.P.

AND

THE GRANTORS NAMED HEREIN

Dated as of October 30, 1996


OMNIBUS OPTION AGREEMENT

This Omnibus Option Agreement (this "Agreement") is executed as of the ___ day of October, 1996 by Kilroy Realty, L.P., a Delaware limited partnership (the "Operating Partnership" or "Optionee"), and the grantors whose names are set forth on the signature pages hereto (each, a "Grantor" and, collectively, the "Grantors"). Capitalized terms used but not defined herein shall have the meaning given to each such term in the Memorandum (as defined below).

WHEREAS, the Grantor owns a direct or indirect interest in one or more of the office and industrial properties and related real and personal property, contracts and other rights (collectively, the "Properties") affiliated with the business of Kilroy Industries, a California corporation ("KI") and set forth on Exhibit A hereto;

WHEREAS, the Grantor holds such interest (an "Interest") directly (any entity owning a Property directly is referred to herein as an "Entity"), as a beneficiary of a trust, in the form of general or limited partnership interests in one or more partnerships or in the form of membership interests in a limited liability company;

WHEREAS, Optionee desires to acquire from each Grantor, and each Grantor desires to grant to Optionee, an option (the "Option") to require Grantor's contribution, transfer, assignment and conveyance of the Interests (the "Contribution"), including the Option Property (as defined below), to Optionee in exchange (the "Exchange") for limited partnership interests ("OP Units") in the Operating Partnership on the terms and conditions set forth herein;

WHEREAS, the Contribution may be effected, with respect to certain partnerships and limited liability companies at the discretion of the general partner(s) or members thereof, as applicable, either by (i) the direct transfer of all or a portion of the Grantor's direct or indirect interests in an Entity to the Operating Partnership in exchange for OP Units, followed in certain cases by the Entity's distribution of its Properties to the Operating Partnership in redemption of such transferred interests, or (ii) the direct transfer of a Property by an Entity to the Operating Partnership in exchange for OP Units followed, in the case of certain partnerships, limited liability companies or trusts, by the Entity's distribution, either directly or through a constituent entity that owns an interest in an Entity, of such OP Units to the holders of direct or indirect interests in that Entity, as more fully described in the private placement memorandum dated as of October 29, 1996 delivered to Grantors and attached hereto as Exhibit D (the "Memorandum"), and the Representation Letter, Consent and Power of Attorney of even date herewith delivered by or on behalf of such Grantor to the Operating Partnership (each such letter is hereinafter referred to as such Grantor's "Consent Letter"); and

WHEREAS, the parties acknowledge that the Operating Partnership is considering the acquisition of each Grantor's Interests in connection with the formation of a real estate investment trust, Kilroy Realty Corporation, a Maryland corporation (the

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"Company"), which will be the sole general partner of the Operating Partnership and a proposed initial public offering (the "IPO") of the Company's shares of common stock (the "REIT Shares");

NOW, THEREFORE, in consideration of the foregoing premises and the mutual covenants and conditions set forth herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Optionee and each of the Grantors agree as follows:

ARTICLE I. THE OPTION

1.1 Grant of Option. Each Grantor hereby grants to Optionee an option (each such option is hereinafter referred to as such Grantor's "Option" and collectively, the "Options") to require the Contribution to Optionee of all right, title and interest of such Grantor in its Interests, free and clear of any security interests, claims, liens, equities, or other encumbrances of any kind or nature whatsoever and any preemptive or preferential rights, except as previously disclosed to the Operating Partnership, all on the terms and conditions hereinafter set forth.

1.2 Term and Exercise of Option. Optionee may exercise an Option at any time from and after the date hereof through the date of the closing of the IPO; provided, however, that in the case of the Option with respect to Interests in the Property set forth in Exhibit C (the "Option Property"), such Option shall be exercisable in accordance with the provisions set forth in such Exhibit. The last date on which an Option may be exercised is referred to herein as an "Option Termination Date." Each Option may be exercised by the giving of notice by Optionee to the Grantor. If Optionee does not exercise an Option by the Option Termination Date, such Option shall be deemed terminated and shall be of no further force and effect and neither Grantor nor Optionee shall have any further obligations hereunder. Notwithstanding the foregoing, from the date hereof through the applicable Option Termination Date, each Grantor's Option shall be irrevocable.

1.3 Treatment as Contribution. The Contribution shall constitute a "Capital Contribution" pursuant to Article 4 of the Agreement of Limited Partnership of the Operating Partnership to be executed on or prior to the closing of the IPO (the "OP Partnership Agreement"), a draft of which is included in the disclosure materials accompanying the Consent Letter, and is intended to be governed by Section 721(a) of the Internal Revenue Code of 1986, as amended.

1.4 Consideration. The full consideration for each Grantor's Interests (such consideration with respect to such Grantor is hereinafter referred to as such Grantor's "Option Consideration") shall be such number of OP Units to be determined as set forth in the Memorandum or, in the case of the Option Property, as set forth in Exhibit C, as such Option Consideration may be adjusted pursuant to Section 4.2 hereof.

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1.5 Acknowledgment Regarding Memorandum and Consent Letter. Each Grantor acknowledges the receipt and review of the Memorandum describing the terms of the Contribution and relevant information concerning the Operating Partnership, the Company and the IPO, and each Grantor has executed the Consent Letter concurrently herewith.

1.6 Acquisition of Interests. Upon Optionee's exercise of an Option, such Grantor shall make the Contribution and the Operating Partnership shall acquire and accept the Interests from such Grantor, as set forth in the recitals hereto, and the Operating Partnership shall deliver to such Grantor such Grantor's Option Consideration in accordance with the terms of this Agreement. Such Contribution will be evidenced by a form of assignment or other documentation satisfactory in form and substance to the Operating Partnership.

1.7 Assumption of Obligation. Except as otherwise expressly provided herein, upon the Closing (as hereinafter defined) the Operating Partnership shall assume the obligations of the Entities under all leases, contracts and other agreements or other obligations of Grantors relating to the Properties, in each case, which have been entered into in the ordinary course of business or have been previously disclosed to the Operating Partnership and which are not otherwise in violation of this Agreement except claims of any Grantor or other liabilities arising out of the consummation of the transactions contemplated by the Memorandum.

1.8 Kilroy LAX. Any payments with respect to (i) obligations in an amount up to $3,650,000 plus any interest or penalties in connection with the elimination of the joint venture obligation relating to Tower VI at Kilroy LAX and the extension of the Hughes Electronic Corporation's Space & Communications Company lease at Kilroy LAX and (ii) the freeway on-ramp under construction (including, without limitation, reparations and improvements as a result thereof or in connection therewith) at Kilroy LAX, shall, in each case, be the responsibility of the Grantor who is the owner of such Property and such Grantor agrees that any such payment is such Grantor's responsibility.

1.9 Contract Rights. Upon Optionee's exercise of any Option, the Grantor of such Option agrees to transfer, or to cause any of its affiliates to transfer, as contemplated in Section 5.3.A hereto, all of such Grantor's right, title and interest in the contracts set forth in Exhibit B hereto to the Operating Partnership or an affiliate thereof, free and clear of any security interests, claims, liens, equities or other encumbrances of any kind or nature whatsoever other than those which are disclosed to, and approved by, Optionee.

ARTICLE II. CONDITIONS TO OBLIGATIONS TO CLOSE

2.1 Conditions to Grantor's Obligation to Close. The obligation of each Grantor to close hereunder upon the exercise of any Option shall be subject to (i) the consummation of the IPO, (ii) the issuance to those Grantors whose Option Consideration is determined by the amount that the value of such Grantor's Interest in the Properties bears to the aggregate value of all such Grantors' Interests in the Properties (the "Percentage Valuation Grantors") and whose Options are exercised at the closing of the IPO of OP Units

3

which in the aggregate have an initial value of at least $5.0 million (each OP Unit to be deemed to have an initial value equal to the public offering price of one REIT Share in the IPO), and (iii) the approval for listing, subject to notice of issuance, of the REIT Shares on a national securities exchange or the approval for designation, subject to notice of issuance, of the REIT Shares as national market system securities on an interdealer quotation system by the National Association of Securities Dealers, Inc.

2.2 Conditions to Operating Partnership's Obligations to Close. The obligation of the Operating Partnership to close hereunder upon the exercise of any Option shall be subject to the satisfaction of the following conditions unless waived by the Operating Partnership in its sole and absolute discretion:

A. Closing of IPO. The Company shall have consummated the IPO and received proceeds therefrom in such amount as to adequately provide for the issuance to the Percentage Valuation Grantors whose Options are exercised at or prior to the closing of the IPO of OP Units which in the aggregate have an initial value of at least $5.0 million (each OP Unit to be deemed to have an initial value equal to the public offering price in the IPO of one REIT Share).

B. Representations and Warranties True at Closing. The representations and warranties made by the Grantor in the Consent Letter shall be true in all material respects as of the Closing (as defined herein) with the same effect as though such representations and warranties had been made or given at the Closing.

C. Compliance with Agreements. The Grantor shall have timely and duly performed and complied in all respects with such Grantor's respective obligations under this Agreement and the Consent Letter prior to or at the Closing and shall have executed and delivered the OP Partnership Agreement.

D. Supplemental Representations, Warranty and Indemnity Agreement.
The Grantors named as parties to that certain Supplemental Representations, Warranties and Indemnity Agreement (the "Supplemental Agreement"), shall have entered into the Supplemental Agreement and such Supplemental Agreement shall be in form and substance satisfactory to the Operating Partnership in its sole discretion and the representations and warranties of the Grantors contained therein shall be true in all material respects as of the Closing. The parties thereto shall have pledged their OP Units in accordance therewith to secure their indemnity obligations under the Supplemental Agreement, and such pledge shall be in form and substance satisfactory to the Operating Partnership.

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E. No Material Adverse Change. There shall not have occurred between the date hereof and the Closing any casualty, loss, condemnation or other adverse event with respect to any Property, or any development involving a prospective adverse event with respect to any Property, including, without limitation, any change in the level of occupancy of any Property (as applicable) or any change in the rental rates with respect to any Property, that would be material to the business proposed to be conducted by the Operating Partnership.

F. No Prohibition on Consummation of Transactions. No order, statute, rule, regulation, executive order, injunction, stay, decree or restraining order shall have been enacted, entered, promulgated or enforced by any court of competent jurisdiction or governmental or regulatory authority or instrumentality that prohibits the consummation of the transactions contemplated hereby, and no litigation or governmental proceeding seeking such an order shall be pending or threatened.

G. Delivery of Documents. The Grantor shall have executed and delivered to the Operating Partnership all documents the Operating Partnership shall deem necessary for the transfer of the Interests and the consummation of the transactions contemplated herein, including, without limitation, the documents set forth in Section 5.3 hereof.

H. Consents. The Grantor shall have obtained all consents or approvals of governmental authorities or third parties to the consummation of the transactions contemplated herein that the Operating Partnership shall deem necessary for the transfer of the Interests.

I. No Breach. Each Grantor shall not have breached any of its covenants contained herein.

J. Hart-Scott Rodino Act. If Optionee shall determine that any of the transactions contemplated hereby is subject to the reporting requirements of the Hart-Scott-Rodino Antitrust Improvements Act of 1976, then all filings shall have been made and all other actions shall have been taken as necessary to comply with such act and the rules and regulations thereunder. Each Grantor covenants to take all such actions and make all such filings requested by Optionee as necessary to comply with such act and the rules and regulations thereunder.

K. No Condemnation. There shall be no pending or threatened condemnation or taking of any part of any Property or any means of ingress or egress thereto (other than any such taking which, in the Optionee's reasonable judgment, does not materially adversely affect such Property).

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ARTICLE III. COVENANTS

3.1 Covenants of Grantor. Each Grantor covenants and agrees that from the date hereof through the Closing:

A. Such Grantor will not, and will not enter into any agreement to, transfer, sell or otherwise dispose of any of such Grantor's Interests to any other person or entity, subject to the rights of certain of the Grantors to sell the Option Property following consummation of the IPO as provided on Exhibit C.

B. Such Grantor will, or (if not an Entity) will cause any Entity in which it has a direct or indirect interest, to conduct its business in the ordinary course, and operate and maintain the Properties, in each case, consistent with past practice.

C. Such Grantor will allow, and will cause an Entity over which it has control to allow, the Operating Partnership and its agents and representatives to inspect the Properties and the records, books and accounts of the Entities at all reasonable times.

D. Such Grantor will promptly notify the Operating Partnership if any of its representations or warranties in the Consent Letter is untrue or if it becomes aware of any transaction or occurrence which would make any of such representations or warranties untrue.

E. Such Grantor will or (if not an Entity) will cause any Entity over which it has control, to maintain in effect insurance of such types, in such amounts and on such terms as are currently in effect with respect to the Properties and keep in force and renew such permits and licenses as are necessary to own and operate the Properties.

F. Such Grantor shall not modify or amend any partnership agreement, limited liability company operating agreement or trust agreement of any partnership, limited liability company or trust in which it has an Interest without the prior consent of the Operating Partnership other than as necessary to permit or facilitate the Contribution and the transactions related thereto contemplated thereby.

G. Such Grantor shall not, without the Operating Partnership's prior consent and other than in connection with the arrangement of any interim financing with respect to the Properties, permit any Entity to:

1. enter into any material transaction or contract;

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2. amend, modify or terminate any material agreement to which the Entity is a party; or

3. materially alter the manner of keeping the Entity's books, accounts or records or the accounting practices therein reflected.

H. Such Grantor will, or (if not an Entity) will cause any Entity over which it has control to, maintain the Properties in at least as good condition and repair as prevails on the date hereof except for reasonable wear and tear.

I. The Grantor agrees to transfer any and all insurance and condemnation proceeds payable to a Grantor with respect to a Property, provided, however, that the obligation to restore such Property related thereto shall be the obligation of the Operating Partnership.

J. Such Grantor shall use its good faith best efforts to obtain any approvals, waivers or other consents of governmental authorities or other third parties required to effect the transactions contemplated by this Agreement.

ARTICLE IV. CLOSING ADJUSTMENTS

4.1 Prorations. On the Closing Date (as defined below), or as promptly as practicable following the Closing Date, to the extent such matters are not the right or responsibility of any tenant of a Property, all revenues and all charges that are customarily prorated in transactions of this nature, including, without limitation, accrued rent, overpaid taxes or fees, real and personal property taxes, and other similar periodic charges payable or receivable with respect to each applicable Property shall be ratably prorated between the Operating Partnership and the applicable Grantor(s) effective as of the Closing Date.

4.2 Allocation of Adjustments. All adjustments contemplated by this Article 4 shall be made by adjusting the Option Consideration to each Percentage Valuation Grantor by debiting or crediting (as the case may be) such Grantor's Option Consideration.

ARTICLE V. CLOSING

5.1 Closing. In connection with or at any time after the exercise by Optionee of an Option, the Operating Partnership will specify a closing date (the "Closing Date") for the closing of a Contribution or Contributions (a "Closing"), which shall occur on the date of, the closing of the IPO, provided, however, that in the event the Option with respect to the Option Property is not exercised by the Operating Partnership prior to the closing of the IPO, the Closing of such Contribution shall occur on such date, consistent with the provisions of Exhibit C, as the Operating Partnership shall determine in its discretion but in no event later than 60 days after the exercise of the Option for such Option Property (such exercise to be deemed to occur on the date the Operating Partnership gives the OP Notice (as

7

defined in Exhibit C)). The consummation of the Contributions made on the closing of the IPO shall be deemed to occur concurrently with the consummation of the IPO. Any Closing of the Option with respect to the Option Property exercised after the consummation of the IPO shall be held at such place and time as determined by the Operating Partnership in its sole discretion and, with respect to all other Properties, shall be held at such place and time as the closing of the IPO is held.

5.2 Failure of Closing to Occur. If, other than with respect to the Option Property, the Closing does not occur on or before December 31, 1998, this Agreement will terminate, and any and all rights or obligations hereunder shall cease and no longer be binding on the parties hereto and no party shall thereafter have any liability or obligation hereunder to any other party.

5.3 Closing Deliveries.

A. At the Closing, each Grantor shall, directly or through its attorney-in-fact, execute, acknowledge and deliver to the Operating Partnership the legal documents and other items necessary to carry out the intention of this Agreement, including, but not limited to, deeds and bills of sale and assignments of such Grantor's Interests, including bills of sale and assignments (as applicable) for such Grantor's interest in leases (including, without limitation, ground leases and space leases), contracts, licenses, permits, personalty agreements and proprietary rights related to the ownership, development, use and operation of the Properties, as well as assignments of the interests in the agreements listed on Exhibit B, in a form reasonably satisfactory to the Operating Partnership.

B. In addition to the documents mentioned above and herein, each Grantor shall deliver or cause to be delivered any other documents reasonably requested by Operating Partnership or reasonably necessary to assign, transfer and convey such Grantor's Interests and effectuate the transactions contemplated hereby.

C. At the Closing, each Grantor shall execute, acknowledge and deliver and shall cause each entity in which the Grantor has a direct or indirect interest to execute, acknowledge and deliver an affidavit from each of such Grantor or entity as appropriate, stating under penalty of perjury the United States Taxpayer Identification Number of the Grantor or entity, as appropriate, and that Grantor or entity, as appropriate, is not a foreign person pursuant to Section 1445(b)(2) of the Internal Revenue Code of 1986, as amended, and a comparable affidavit satisfying state and any other withholding requirements.

5.4 Breach of Agreement.

(a) Optionee may, in its sole discretion, elect not to complete the acquisition of all or any portion of the Interests of any Grantor in the event that the Grantor breaches any provision of this Agreement (any such Grantor, a "Non-Complying Grantor"). The election of Optionee to not acquire all or any portion of the Interests of a particular Non-Complying Grantor shall not affect the obligations of any other Grantor hereunder, including any other Non- Complying Grantor.

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(b) If any Grantor defaults with respect to its obligations under this Agreement, Optionee shall be entitled to exercise against each such Grantor any and all remedies provided at law or in equity, including but not limited to, the right to specific performance. No default by any Grantor hereunder shall in any way limit or affect the obligations of any other Grantor hereunder.

5.5 Cessation of Public Offering. If at any time Optionee or its underwriter or underwriters determines in good faith to abandon the IPO, Optionee will so advise each Grantor in writing and thereupon all parties hereto will be relieved of all obligations under this Agreement.

5.6 Further Assurances. Each Grantor will, from time to time, execute and deliver to Optionee all such other and further instruments and documents and take or cause to be taken all such other and further action as Optionee may reasonably request in order to effect the transactions contemplated by this Agreement, including instruments or documents deemed necessary or desirable by Optionee to effect and evidence the conveyance of such Grantor's Interests and the interests described in Section 1.9 hereof in accordance with the terms of this Agreement.

ARTICLE VI. MISCELLANEOUS

6.1 Entire Agreement. This Agreement and the Consent Letter, including any exhibits and schedules hereto and thereto and other documents or agreements, entered into pursuant hereto and thereto and all instruments and certificates delivered pursuant to the terms hereof or thereof, constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter hereof, and supersedes all prior agreements, promises, covenants, arrangements, representations or warranties, whether oral or written, by any party hereto or any officer, director, employee or representative of any party hereto.

6.2 Counterparts. This Agreement may be executed in several counterparts, each of which will be deemed an original and all of which taken together shall constitute one and the same instrument.

6.3 Governing Law. This Agreement shall be governed by the laws of the State of California without giving effect to the conflict of law provisions thereof.

6.4 Amendment. This Agreement may be amended or modified only in a writing signed by the parties to be bound by such amendment and any waiver of a provision must be in writing signed by the parties to be bound and such waiver shall not constitute a waiver of any other provisions of this Agreement; provided, however, that no such amendment shall alter the irrevocability of a Grantor's Option as set forth in Section 1.2 or vary the obligation of each Grantor to close hereunder as set forth in Section 2.1 hereof.

6.5 Successors. This Agreement shall be binding upon, and shall be enforceable by and inure to the benefit of, the parties hereto and their respective heirs, legal

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representatives, successors and assigns; provided, that this agreement may not be assigned without the Operating Partnership's prior written consent.

6.6 Titles. The titles and captions of the Articles, Sections and paragraphs of this Agreement are included for convenience of reference only and shall have no effect on the construction or meaning of this Agreement.

6.7 Severability. If any provision of this Agreement, or the application thereof, is for any reason held to any extent to be invalid or unenforceable, the remainder of this Agreement and application of such provision to other persons or circumstances will be interpreted so as reasonably to effect the intent of the parties hereto.

6.8 Third Parties. Except as specifically set forth or referred to herein, nothing herein expressed or implied is intended or shall be construed to confer upon or give to any person or entity other than the parties hereto and their successors or assigns any rights or remedies under or by reason of this Agreement.

6.9 Notices. All notices, demands, requests, consents, approvals or other communications (collectively, "Notices") required or permitted to be given hereunder or which are given with respect to this Agreement shall be in writing and shall be personally served, delivered by reputable air courier service with charges prepaid, or transmitted by hand delivery, telegram, telex or facsimile, addressed as set forth below, or to such other address as such party shall have specified most recently by written notice in accordance with this Section 6.9. Notice shall be deemed given on the date of service or transmission if personally served or transmitted by telegram, telex or facsimile. Notice otherwise sent as provided herein shall be deemed given on the next business day following delivery of such notice to a reputable air courier service.

To the Operating Partnership:

Kilroy Realty, L.P.
c/o Kilroy Industries
2250 East Imperial Highway
El Segundo, California 90245

To Grantor:

c/o Kilroy Industries, John B. Kilroy, Sr.
2250 East Imperial Highway
El Segundo, California 90245

6.10 Exhibits. Each of the exhibits referred to herein and attached hereto is an integral part of this Agreement and is incorporated herein by reference.

6.11 Time of the Essence. Time is of the essence with respect to all obligations of each Grantor under this Agreement.

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6.12 Attorneys Fees. In the event of a dispute arising out of the interpretation or enforcement of this Agreement, or a declaration of rights hereunder, or enforcement of any judgment of any judicial or non-judicial body with respect to the terms of this Agreement, the prevailing party shall be entitled to reasonable attorney's fees.

6.13 Trusts. In the event any Grantor which is a trust has terminated or the Properties held by such trust are deemed distributed, this Agreement shall be deemed modified to reflect the direct ownership by the beneficiaries of such trust of the Properties held by such trust as set forth on Exhibit A hereto.

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IN WITNESS WHEREOF, each of the parties hereto has executed this Agreement, or caused the Agreement to be duly executed on its behalf, as of the date first written above.

OPTIONEE:                              KILROY REALTY, L.P.



                                       By:  Kilroy Realty Corporation
                                       Its: General Partner



                                       By: /s/ John B. Kilroy, Jr.
                                           -------------------------------
                                           Name:  John B. Kilroy, Jr.
                                           Title: President

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GRANTOR SIGNATURE PAGE

The undersigned, desiring to become one of the within named Grantors to this Omnibus Option Agreement by and among Optionee and the Grantors named therein, dated as of October __, 1996, hereby becomes a party to such Agreement. The undersigned agrees that this signature page may be attached to any counterpart of this Agreement.


Name:

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EXHIBIT A

              Property/Agreement                 Party
              ------------------                 -----
(Other than as indicated below, each entry
below includes real estate (but only a
ground leasehold estate with respect to
land held subject to a ground lease),
substantially all personal property owned
by a Grantor related thereto, and leases)

Kilroy Airport Center at El Segundo              Kilroy Airport Associates
2240, 2250, 2260 E. Imperial Hwy.
El Segundo, California

Kilroy Airport Center Long Beach                 Kilroy Long Beach
3750, 3760, 3780 Kilroy Airport Way              Associates*
Long Beach, California                           Kilroy Long Beach Partner
(and ground lease)                               II**


Phases III and IV                               Kilroy Long Beach
Kilroy Airport Center Long Beach                Associates
Long Beach, California
(all ground leases and development
 agreement)

185 S. Douglas Street                            Kilroy-Freehold Industrial
El Segundo, California                           Development Organization
(Bldgs 213/215)

2031 E. Mariposa Avenue                          Kilroy Industries
El Segundo, California
(Bldg 51)

3320/3332 E. La Palma Avenue                     John B. Kilroy, Sr.*
Anaheim, California                              Kilroy Building 73
(Bldg 73)                                        Partnership**

2260 E. El Segundo Blvd.                         Kilroy-Freehold Industrial
El Segundo, California                           Development Organization
(Bldg 214)

2265 E. El Segundo Blvd.                         Kilroy-Freehold Industrial
El Segundo, California                           Development Organization
(Bldg 218)

1000 E. Ball Road                                Kilroy 1979 Trust(1)/Kilroy
Anaheim, California                              Industries
(Bldg 235)

A-1

              Property/Agreement                 Party
              ------------------                 -----
(Other than as indicated below, each entry
below includes real estate (but only a
ground leasehold estate with respect to
land held subject to a ground lease),
substantially all personal property owned
by a Grantor related thereto, and leases)

1230/1240 South Lewis Street                     Kilroy 1979 Trust(1)/Kilroy
Anaheim, California                              Industries
(Bldg 236)

12681/12691 Pala Drive                           Kilroy Industries*
Garden Grove, California                         Kilroy Garden Grove
(Bldg 241)                                       Associates**

2270 E. El Segundo Blvd.                         Kilroy-Freehold Industrial
El Segundo, California                           Development Organization
(Bldg 212)

5115 North 27th Avenue                           Kilroy A-102 Trust(2)
Phoenix, Arizona

SeaTac Office Center                             Sea/Tac Properties, Ltd.
17900, 17930, 18000 Pacific Highway              Kilroy Industries***
Seattle, Washington
(and all ground and air leases)

Administrative Assets                            Kilroy Industries/Kilroy
                                                 Technologies Company,
                                                 LLC

Thousand Oaks Exclusive Negotiation              Kilroy Industries
Agreement


* holds legal title to property as agent on behalf of beneficial owner ** beneficial owner of 100% interest in property *** Party to ground and air leases only
(1) Beneficiaries are John B. Kilroy, Sr., John B. Kilroy, Jr., Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso
(2) Beneficiaries are John B. Kilroy, Jr., Patrice Bouzaid, Susan Hahn, Anne McCahon and Dana Pantuso.

A-2

EXHIBIT B

ASSIGNMENT OF CONTRACTS

Agreement                                        Party
- ---------                                        -----
Development Management Agreement                 Kilroy Technologies
 (Riverside)                                     Company, LLC

Agreement to Provide Real Estate Services        Kilroy Technologies
 (Northrop Grumman - Pico Rivera)                Company, LLC

Exclusive Broker Employment Agreement            The Kilroy
 (Northrop Grumman)                              Companies,
                                                 LLC

Lease between Kilroy Industries, as              Kilroy Industries
 landlord, and United Artists Theatre
 Circuit, Inc., as tenant

Option to Enter Into Ground Lease                Kilroy Long Beach
 between City of Long Beach and Kilroy           Associates
 Long Beach Associates, as amended

Any contract rights held by any Grantor
 with respect to properties to be acquired
 by the Operating Partnership or any
 affiliate thereof

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EXHIBIT C

I. TERMS OF OPTION FOR SEATAC OFFICE CENTER

1. Option Property: SeaTac Office Center at Seattle-Tacoma International Airport, 17900, 17930 and 18000 Pacific Highway, Seattle, Washington (the "SeaTac Property").

2. Term of Option: The option (the "SeaTac Option") is exercisable by the Operating Partnership beginning on the date of this Agreement and continues until the first anniversary of the consummation of the IPO; provided, that, in the event that SEA/TAC Properties, Ltd. (the "Owner") is unable to deliver to the Operating Partnership (i) estoppel certificates reasonably satisfactory to the Operating Partnership regarding the continued validity of, and absence of breaches under, the ground leases applicable to the SeaTac Property and (ii) assurance reasonably satisfactory to the Operating Partnership with respect to the indebtedness on the Option Property that such indebtedness can be subject to at least one of the following: (A) assumption with all prior defaults or breaches deemed cured or waived or (B) repayment with the lenders' rights being deemed discharged in all material respects (collectively, the "Estoppel Certificates") prior to the 270th day following consummation of the IPO, then the SeaTac Option shall be exercisable until the date that is 90 days following the delivery of the Estoppel Certificates. The Owner shall use its reasonable efforts to obtain the Estoppel Certificates as soon as reasonably practicable following the date of this Agreement.

3. Purchase Price:

a. If the Operating Partnership exercises the SeaTac Option prior to or concurrently with the closing of the IPO, the Grantor(s) of the SeaTac Option shall be entitled to receive such number of OP Units in exchange for its Interests as described in the Memorandum.

b. In the event that the Operating Partnership exercises the SeaTac Option following the consummation of the IPO, the purchase price for such Option Property, payable in OP Units, will be equal to the greater of (i) the Net Operating Income (as defined below) for each of such office properties, capitalized at a 9.5% rate, plus capitalized expenditures and expenses, excluding carrying costs, incurred from the date the underwriting agreement is executed in connection with the IPO (the "Offering Date") through the date of exercise of the SeaTac Option (the "Exercise Date"), less the amount of outstanding debt on such

C-1

Property as of the Exercise Date or (ii) $20 million, plus capitalized expenditures and expenses, excluding carrying costs, incurred from the Offering Date through the Exercise Date, net to holder less the amount of outstanding debt on such Property as of the Exercise Date (but in no event less than zero). Upon exercise of the Option, the Operating Partnership will be responsible for all indebtedness related to the Option Property. For purposes of this paragraph, "Net Operating Income" is defined as net operating income for the 12-month period ending the Offering Date, adjusted for (A) the incremental increase in net operating income attributable to contractual rental increases for the 12- month period immediately following the Offering Date, (B) the incremental increase in net operating income attributable to rental revenue from leases commencing during the 12-month period ending the Offering Date for the 12- month period immediately following the Offering Date, (C) the elimination of rental revenue reflected in rental revenue for the 12-month period ending the Offering Date from (1) leases which expired during such 12-month period, and (2) leases which expire during the 12-month period immediately following the Offering Date for that portion of such 12-month period that such leases are no longer in effect and (D) the effect of adjusting straight-line rental income and expenses included in net operating income from an accrual basis under GAAP to a cash basis. The number of OP Units to be issued in respect of the foregoing will be in an amount determined by reference to the average trading value of the REIT Shares for the ten trading days immediately preceding the Exercise Date. In exercising the Option following the consummation of the IPO, the Operating Partnership will use reasonable efforts to cooperate with the Grantors to minimize any taxes payable in connection with such exercise or the assumption or repayment of debt relating to the SeaTac Property.

4. Third Party Offers. In the event the Grantor(s) desire to offer the SeaTac Property to a third party, the Grantor(s) shall give written notice (the "Notice") thereof to the Operating Partnership (the date notice is given is referred to as the "Notice Date"), which notice shall include the proposed purchase price, leasing terms and other economic terms, as applicable (the "Proposed Purchase Price"), of the proposed transfer of the SeaTac Property, and the Operating Partnership shall then have 60 days to give notice (the "OP Notice") of its election to acquire such property at the lower of the Option Price or the Proposed Purchase Price. In the event the Operating Partnership does not give the OP Notice, the SeaTac Option shall be suspended and the Grantor(s) may proceed with the sale pursuant to the terms of such

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offer, provided that the economic terms may be up to 5% below those described in the Notice; provided, however, that if such sale is at a price in excess of the Option Price and at the time the Notice is given the Estoppel Certificates have not been delivered, the Operating Partnership shall have the right to acquire at the Option Price the Owner's rights and related monetary obligations under such sales agreement. In the event the Grantor(s) of the SeaTac Property (i) have not entered into a letter of intent for the sale of the SeaTac Property within 180 days following the Notice Date, or (ii) have not completed the sale of the SeaTac Property within 270 days following the Notice Date, then the Operating Partnership's SeaTac Option will be reinstated. The SeaTac Option shall be subject to any arrangements entered into by the Grantor(s) in connection with any financing, recapitalization or leasing of the SeaTac Property including, without limitation, any rights of the current lender(s) with respect to the SeaTac Property with respect to a transfer pursuant to the SeaTac Option.

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EXHIBIT D

[Private Placement Memorandum]

C-4

EXHIBIT 10.4

SUPPLEMENTAL REPRESENTATIONS,
WARRANTIES AND INDEMNITY AGREEMENT

THIS SUPPLEMENTAL REPRESENTATIONS, WARRANTIES AND INDEMNITY AGREEMENT (the "Agreement") is made and entered into as of __________ __, 1997 by Kilroy Industries, a California corporation, John B. Kilroy, Sr., and John B. Kilroy, Jr. (all of the aforementioned individuals and entity being referred to herein individually as an "Indemnitor" and collectively as the "Indemnitors"), and Kilroy Realty, L.P., a Delaware limited partnership (the "Operating Partnership"), and Kilroy Realty Corporation, a Maryland corporation (the "REIT").

WHEREAS, the Indemnitors and certain other persons own interests in one or more of the Properties (each as hereinafter defined) either directly or indirectly through a trust or in the form of general or limited partnership interests in one or more partnerships or in the form of a membership interest in a limited liability company (each such interest is referred to herein as an "Interest");

WHEREAS, the Indemnitors and certain other persons will transfer to the Operating Partnership all of their Interests in the Properties (a) upon the exercise by the Operating Partnership, on or before consummation of an initial public offering of shares of common stock of the REIT (the "IPO"), of options granted to it by such persons pursuant to the Omnibus Option Agreement dated as of November 3, 1996 (the "Omnibus Agreement") by and among the Operating Partnership and the grantors named therein and (b) upon the exercise by the Operating Partnership, following the IPO, of options granted to it by such persons pursuant to two separate Option Agreements, each dated as of ______________, 1997 (each individually, an "Option Properties Agreement", and collectively, the "Option Properties Agreements") by and among the Operating Partnership and the grantors named therein (all individuals and entities other than the Operating Partnership which executed the Omnibus Agreement or the Option Properties Agreements are referred to herein collectively as the "Grantors" and individually as a "Grantor");

WHEREAS, certain of the Grantors executed a Representation Letter, Consent and Power of Attorney (collectively, the "Consents and Power of Attorney") pursuant to which they consented to the transfer of their Interests to the Operating Partnership under the Omnibus Agreement, made certain representations and warranties and appointed John B. Kilroy, Sr., John B. Kilroy, Jr. and Jeffrey C. Hawken or any of them as their attorney-in-fact (each, an "Attorney- in-Fact") to effect such transfers; all of the foregoing transfers and actions contemplated in connection with the IPO under the Consents and Power of Attorney, the Omnibus Agreement and the Option Properties Agreements are collectively referred to herein as the "Transactions"; and


WHEREAS, to induce the REIT to consummate the IPO and to induce the Operating Partnership to exercise the options granted to it pursuant to the Omnibus Agreement and the Option Properties Agreements, each Indemnitor has agreed to make the representations and warranties contained in this Agreement for the benefit of the REIT and the Operating Partnership.

NOW, THEREFORE, in consideration of the foregoing and other good and valuable consideration, the receipt and sufficiency of which hereby are acknowledged, the parties hereby agree as follows:

1. Defined Terms. As used herein, the following terms shall have the respective meanings indicated below:

"Acquisition Properties" shall mean the properties located at (i) 3880 and 3900 Kilroy Airport Way, Kilroy Airport Center, Long Beach, California, (ii) 2829 Townsgate Road, Thousand Oaks, California, (iii) 12752-12822 Monarch Street, Garden Grove, California and (iv) 4125, 4155 and 4175 E. La Palma Avenue, Anaheim, California.

"Assumed Liabilities" shall mean all accounts payable and accrued expenses (other than accounts payable or accrued expenses which by their terms are past due), accrued property taxes (other than property taxes which by their terms are past due), accrued cost of option buy-out and tenant improvements and rent received in advance and tenant security deposits reflected on the September 30, 1996 pro forma condensed consolidated balance sheet of the Company included in the Registration Statement or incurred in the ordinary course of the Kilroy Group's Business consistent with past practices from October 1, 1996 until the Closing Date and which remain unpaid on the Closing Date, but excluding any amounts which by their terms are past due and excluding the liabilities set forth on Schedule 1 attached hereto.

"Attorney-in-Fact" shall have the meaning assigned to such term in the recitals to this Agreement.

"Claim" shall have the meaning assigned to such term in Section 4 hereof.

"Closing Date" shall mean the date of the closing of the IPO.

"Code" shall mean the Internal Revenue Code of 1986, as amended.

"Collateral" shall have the meaning assigned to such term in the Pledge Agreement.

"Commission" shall mean the Securities and Exchange Commission.

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"Consents and Power of Attorney" shall have the meaning assigned to such term in the recitals to this Agreement.

"Contract" shall have the meaning assigned to such term in Section 2.13 hereof.

"Covered Party" shall have the meaning assigned to such term in Section 4 hereof.

"Entity" shall mean KI and each corporation, partnership, limited liability company or trust affiliated with KI or any Grantor which prior to the closing of the IPO directly owned or leased a Property and, in the event that any such trust terminated or the Property of any such trust is deemed distributed, each beneficiary of such trust.

"ERISA" shall mean the Employee Retirement Income Security Act of 1974, as amended, and the rules and regulations promulgated thereunder.

"Excluded Liabilities" shall mean all obligations and liabilities of any nature of any Grantor other than the Assumed Liabilities including, without limitation, the obligations and liabilities referred to on Schedule 1 hereto.

"Financial Statement" and "Financial Statements" shall have the meaning assigned to such terms in Section 2.11 hereof.

"Grantors" and "Grantor" shall have the meaning assigned to such terms in the recitals to this Agreement.

"Grantor Agreement" and "Grantor Agreements" shall have the meaning assigned to such terms in Section 2.2 hereof.

"Indemnitor" and "Indemnitors" shall have the meaning assigned to such terms in the preamble to this Agreement.

"Intangibles" shall mean all intangible property used in the Kilroy Group's Business, including, without limitation, all Proprietary Rights, contract rights, rent receivables, licenses, permits, certificates, approvals, authorizations, variances, consents, warranties and goodwill, but excluding the intangible property set forth on Exhibit A attached hereto.

"Interests" shall have the meaning assigned to such term in the recitals to this Agreement.

"IPO" shall have the meaning assigned to such term in the recitals to

this Agreement.

3

"KI" shall mean Kilroy Industries, a California corporation.

"Kilroy Group" shall mean the Entities collectively.

"Kilroy Group's Business" shall mean the real estate ownership, acquisition, development, leasing and management businesses, collectively, of the Kilroy Group.

"Lien" shall mean any mortgage, deed of trust, pledge, lien, option,

security interest, restriction, prior assignment, encumbrance, covenant, encroachment, assessment, right of others, license, easement, servitude, right of way, penalty, fine, charge, judgment, liability, debt, obligation or claim of any kind or nature whatsoever, whether direct or indirect, and contingent or non-contingent.

"Offering Date" shall mean the date on which the underwriting agreement is executed with respect to the purchase of the REIT's common stock by the underwriters in connection with the IPO.

"Omnibus Agreement" shall have the meaning assigned to such term in the recitals to this Agreement.

"Operating Partnership" shall have the meaning assigned to such term in the preamble to this Agreement.

"Option Properties" shall mean the Real Properties set forth in Part II of Exhibit C attached hereto. Each of the Option Properties may be separately referred to herein as an "Option Property".

"Option Properties Agreement" and "Option Properties Agreements" shall have the meaning assigned to such terms in the recitals to this Agreement.

"Organization Documents" shall mean (a) the articles or certificate of incorporation and the bylaws of a corporation, (b) the partnership agreement and any statement of partnership of a general partnership, (c) the limited partnership agreement and the certificate of limited partnership of a limited partnership, (d) the declaration of trust of a trust, (e) the articles of organization and limited liability company agreement of a limited liability company, (f) any charter or similar document adopted or filed in connection with the creation, formation or organization of a person and (g) any amendment to any of the foregoing.

"Permit" shall have the meaning assigned to such term in Section 2.16 hereof.

"Permitted Liens" shall have the meaning assigned to such term in Section 2.8 hereof.

4

"person" shall mean any individual, corporation, partnership, limited liability company, joint venture, association, joint-stock company, trust, unincorporated organization or governmental entity.

"Personalty" shall mean all personal property used or useful in the Kilroy Group's Business, including, without limitation, all tangible property and all rights under the contracts referred to in Section 2.13 hereof and the leases referred to in Sections 2.14 and 2.15 hereof and all other Intangibles, as more fully described on Exhibit B attached hereto.

"Pledge Agreement" shall have the meaning assigned to such term in Section 5 hereof.

"Properties" shall mean the Real Properties and all Personalty. Each of the Properties may be separately referred to herein as a "Property".

"Proprietary Rights" shall have the meaning assigned to such term in Section 2.26 hereof.

"Real Properties" shall mean the office, industrial and other real properties set forth on Exhibit C attached hereto, including all buildings, structures (surface and sub-surface), mechanical systems and other improvements located at and forming a part of such properties. Each of the Real Properties may be separately referred to herein as a "Real Property".

"Registration Statement" shall mean the REIT's Registration Statement on Form S-11 (File No. 333-15553), as amended at any time prior to the date the Registration Statement is declared effective by the Commission under the Securities Act..

"REIT" shall have the meaning assigned to such term in the preamble

to this Agreement.

"Securities Act" shall mean the Securities Act of 1933, as amended.

"Services Company" shall mean Kilroy Services, Inc., a Maryland corporation.

"Survival Period" shall have the meaning assigned to such term in Section 6 hereof.

"Transactions" shall have the meaning assigned to such term in the recitals to this Agreement.

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2. Representations and Warranties with Respect to Properties and
Grantors. Each Indemnitor hereby makes the following representations and warranties, as of the Offering Date and as of the Closing Date, with respect to the Grantors, the Entities, the Interests and the Properties. Such representations and warranties, other than those contained in Section 3.4 hereto, are deemed modified in full to the extent any specific statement of fact in the Registration Statement conflicts with any similar statement of fact contained in such representations and warranties.

2.1 Organization and Qualification. Each Grantor that is a limited partnership or a limited liability company was duly formed and is validly existing and in good standing under the laws of its jurisdiction of organization, and has the requisite power and authority to own, lease or operate its property and to carry on its business as it is now being conducted and to engage in the Transactions to which it is a party. Each Grantor that is a general partnership was duly formed and is validly existing under the laws of its jurisdiction of organization, and has the requisite power and authority to own, lease or operate its property and to carry on its business as it is now being conducted and to engage in the Transactions to which it is a party. Each Grantor that is a corporation was duly organized and is validly existing and in good standing under the laws of its jurisdiction of organization, and has the requisite power and authority to own, lease or operate its property and to carry on its business as it is now being conducted and to engage in the Transactions to which it is a party. Each Grantor that is a trust was validly created under its declaration of trust, and the sole trustees of such trust are Marshall L. McDaniel and John B. Kilroy, Sr. or John B. Kilroy, Jr. If such trust is in full force and effect, it and its trustees have the requisite power and authority under applicable law and under such trust's declaration of trust to own, lease or operate its property and to carry on its business as it is now being conducted and to engage in the Transactions to which it is a party. Each Grantor that is a natural person has the full legal right and capacity to engage in the Transactions to which he or she is a party. Each Grantor (other than a Grantor that is a natural person) has made available to the Operating Partnership or the REIT complete and correct copies of its Organizational Documents. Each Grantor that is a limited partnership, limited liability company or a corporation is duly qualified or registered to transact business as a foreign limited partnership, limited liability company or corporation (as the case may be) and is in good standing in each jurisdiction in which such qualification or registration is required, whether by reason of the ownership or leasing of property, the management of properties owned by others or the conduct of its business, except where the failure to be so qualified or registered and in good standing would not amount to a material disability on, or have a material adverse effect on the condition (financial or otherwise), earnings, assets, business affairs or business prospects of, any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions.

2.2 Authority Relative to Omnibus Agreement and Related Agreements.
Each Grantor had the requisite power and authority, and if a natural person the full legal right and capacity, to execute and deliver the Consent and Power of Attorney, the Omnibus

6

Agreement and the Option Properties Agreements to which it is a party and had at the time of execution and continues to have the requisite power and authority, and if a natural person the full legal right and capacity, to perform its obligations under the Consent and Power of Attorney, the Omnibus Agreement and the Option Properties Agreements to which it is a party. All action of each Grantor necessary to authorize the execution, delivery and performance by such Grantor of the Consent and Power of Attorney, the Omnibus Agreement and the Option Properties Agreements to which it is a party was taken, and no other proceedings on the part of any Grantor (i) were or are necessary to authorize the execution and delivery by such Grantor of the Consent and Power of Attorney, the Omnibus Agreement and the Option Properties Agreements to which it is a party or the execution and delivery by such Grantor, or by any Attorney-in-Fact for such Grantor (as applicable), of the instruments of assignment of property and assets and other deliveries contemplated by the foregoing agreements (all of the foregoing agreements and instruments being referred to herein collectively as the "Grantor Agreements" and individually as a "Grantor Agreement") or (ii) are necessary to authorize the consummation by such Grantor (directly or through an Attorney-in-Fact) of the Transactions to which it is a party. With respect to each Grantor who is a natural person living in a community property state, such Grantor either (a) held (at the time of execution and delivery of the Consent and Power of Attorney, the Omnibus Agreement and/or the Option Properties Agreements to which it is party) and continues to hold his or her Interests as separate property and accordingly had (at the time of execution and delivery of the Consent and Power of Attorney, the Omnibus Agreement and/or the Option Properties Agreements to which it is party) and continues to have the authority alone under applicable laws relating to transfers of community property to engage in the Transactions to which he or she is a party (including, without limitation, the transfer of his or her Interests to the Operating Partnership) or (b) held (at the time of execution and delivery of the Consent and Power of Attorney, the Omnibus Agreement and/or the Option Properties Agreements to which it is party) and continues to hold his or her Interests as community property and has obtained the consents, approvals or authorizations of such persons and/or governmental authorities or courts required under applicable laws relating to transfers of community property for such Grantor to engage in the Transactions to which he or she is party (including, without limitation, the transfer of his or her Interests to the Operating Partnership); attached hereto as Schedule 2.2 is a true, correct and complete copy of each such consent, approval or authorization obtained. The execution and delivery by any Grantor (directly or through an Attorney-in-Fact) of the Grantor Agreements to which it is a party, the consummation by such Grantor (directly or through an Attorney- in-Fact) of the Transactions to which it is a party and the performance by such Grantor (directly or through an Attorney-in-Fact) of its obligations under the Grantor Agreements to which it is a party, did not and will not (as the case may be) (i) conflict with or result in a violation or breach of any provisions of the Organizational Documents of any such Grantor, (ii) conflict with, result in a violation or breach of, or constitute (with or without due notice or lapse of time or both) a default (or give rise to any right of termination, cancellation or acceleration) under any of the terms, conditions or provisions of any note, bond, mortgage, indenture, lease, license, easement, restriction, contract, agreement or other instrument or obligation to which such Grantor was at the time

7

of such action or is (as the case may be) a party or subject or by which such Grantor or any of its properties or other assets was at the time of such action or is (as the case may be) bound, (iii) conflict with or violate any provision of any law, statute, rule or regulation or any judgment, order, writ, injunction, decree, rule or regulation of any court or federal, state or other governmental agency, authority or regulatory body to which such Grantor or any of its properties or other assets was at the time of such action or is (as the case may be) subject or (iv) result in the creation of any Lien upon the Properties or such Grantor's Interest.

2.3 Consents and Approvals. No consent, waiver, approval, authorization or other action of, or filing or registration with, any federal, state or other governmental agency, authority or regulatory body or any other person (including, without limitation, any person who is a party to any lease, agreement or commitment included in Schedule 2.13, 2.14 or 2.15 attached hereto) is required to be obtained in connection with the execution, delivery and performance of the Grantor Agreements and the Transactions, except any of the foregoing that shall have been obtained and are in full force and effect.

2.4 Binding Obligation. Each of the Grantor Agreements has been duly executed and delivered by each Grantor that is a party thereto (directly or through an Attorney-in-Fact) and constitutes a legal, valid and binding obligation of such Grantor, enforceable against such Grantor in accordance with its terms.

2.5 Brokers. No Grantor or any general partner, officer or director of any Grantor has incurred any liability or obligation for brokerage or finders' fees or agents' commissions or other similar payment in connection with the Transactions to which it is a party.

2.6 Ownership. (a) Attached hereto as Schedule 2.6 is a true and complete listing of each Entity, the Properties owned or leased by such Entity, and the owners of each Entity and such owners' percentage ownership interest in each Entity, and, if the owners of any Entities are themselves corporations or partnerships, the owners of such corporations and partnerships and their percentage ownership interest in such corporations or partnerships. In the event that any Entity which is a trust terminated or the Properties of any such trust are deemed distributed, the beneficiaries of such trust (prior to its termination or the deemed distribution) as set forth on Schedule 2.6 directly own an interest in the Properties owned by such trust as set forth on Schedule
2.6. Except as disclosed in the Registration Statement, no Grantor has granted

to any person (other than to the Operating Partnership pursuant to the Omnibus Agreement and the Option Properties Agreements) any option, warrant, subscription, conversion right, preemptive right or other right to purchase or otherwise acquire any interest in any Property or in such Grantor, and, to the knowledge of any Indemnitor, no other person or entity has granted to any person any option, warrant, subscription, conversion right, preemptive right or other right to acquire any interest in any Grantor or Property.

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(b) With respect to each Interest of a Grantor that constitutes an interest in a partnership and that is being transferred to the Operating Partnership pursuant to the Omnibus Agreement or the Option Properties Agreements: (i) such Interest has been validly issued and the Grantor has funded all capital contributions and advances to the partnership in which such Interest constitutes an interest that are required to be funded or advanced prior to the Closing Date; (ii) such Interest was issued in compliance with applicable securities, partnership and other laws and the partnership agreement governing such Interest and was not issued in violation of any preemptive rights; (iii) there are no options, warrants, subscriptions, conversion rights, preemptive rights or other rights or agreements of any kind to purchase or otherwise acquire such Interest or other equity interests or profit participation of any kind in the partnership in which such Interest constitutes an interest or any securities or obligations of any kind convertible into such Interest or other equity interests or profit participation of any kind in the partnership in which such Interest constitutes an interest, and there are no other agreements, instruments or understandings with respect to such Interest or other equity interests or profit participation of any kind in the partnership in which such Interest constitutes an interest except as set forth in the partnership agreement of the partnership in which such Interest constitutes an interest;
(iv) such Grantor possesses the unrestricted right to assign and transfer such Interest to the Operating Partnership; and (v) such Grantor is, and upon consummation of the assignments and other transactions contemplated by the Omnibus Agreement or the Option Properties Agreements the Operating Partnership will be, the owner and holder of good title to such Interests, in each case free and clear of any Liens; provided, however, that the Operating Partnership shall not assume, incur or otherwise become responsible for any debts, obligations or other liabilities of any nature of the partnership in which such Interest constitutes a general or limited partnership interest, other than the Assumed Liabilities applicable to such partnership.

2.7 No Other Assets. Except as reflected on Schedule 2.7 attached hereto, no Entity (other than a beneficiary of a trust) owns or leases any assets other than the Properties which may be transferred to the Operating Partnership pursuant to the Omnibus Agreement or the Option Properties Agreements. No Grantor has an interest, direct or indirect, in any of the Properties except for the Interests subject to the Omnibus Agreement or the Option Properties Agreements.

(b) Except as reflected on Schedule 2.7, the Properties constitute all of the properties and assets used or useful in the operation of the Kilroy Group's Business in a manner consistent with its historic operations up to the Closing Date.

2.8 Title to Real Properties. To the knowledge of the Indemnitors, upon consummation of the assignments and other transactions contemplated by the Omnibus Agreement, the Operating Partnership will be (i) the owner and holder of the ground leasehold estate and ground lessee's interest in the land comprising the Kilroy Airport Center Long Beach Property and the ground and air space leasehold estates and ground and air space lessees' interests in the land comprising the SeaTac Office Center Property,

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pursuant to the applicable ground or air space lease or leases set forth on Schedule 2.16 hereto and (ii) the owner and holder of good, valid and marketable fee simple title to each of the Real Properties (other than the land described in clause (i) and the Option Properties), in each case free and clear of all Liens other than the Permitted Liens (as defined below). To the knowledge of the Indemnitors, upon consummation of the assignments and other transactions contemplated by each Option Properties Agreement, the Operating Partnership will be the owner and holder of good, valid and marketable fee simple title to each of the Option Properties subject thereto, in each case free and clear of all Liens other than the Permitted Liens. For purposes hereof, the term "Permitted Liens" shall mean:

(a) Liens, or deposits made to secure the release of such Liens, securing taxes, the payment of which is not delinquent or the payment of which is actively being contested in good faith by appropriate proceedings diligently pursued;

(b) Zoning laws and ordinances generally applicable to the districts in which the Real Properties are located which are not violated by the existing structures or present uses thereof;

(c) Liens imposed by laws, such as carriers', warehousemen's and mechanics' liens, and other similar liens arising in the ordinary course of business which secure payment of obligations not more than 60 days past due or which are being contested in good faith by appropriate proceedings diligently pursued;

(d) non-exclusive easements for public utilities, minor encroachments, rights of access or other non-monetary matters that do not have a material adverse effect upon, or materially interfere with the use of, the Real Properties; and

(e) any exceptions contained in the title insurance policies with respect to the Real Properties obtained in connection with the IPO and acceptable to the representatives of the underwriters involved with the IPO.

2.9 Title to Personalty. To the knowledge of the Indemnitors, each Entity is, and upon consummation of the assignments and other transactions contemplated by the Omnibus Agreement the Operating Partnership will be, the owner and holder of good title to the Personalty (other than the Personalty related to the Option Properties) owned by such Entity, in each case free and clear of any Liens other than the Permitted Liens. To the knowledge of the Indemnitors, each Entity is, and upon consummation of the assignments and other transactions contemplated by each Option Properties Agreement the Operating Partnership will be, the owner and holder of good title to the Personalty related to the Option Properties subject thereto owned by such Entity, in each case free and clear of any Liens other than the Permitted Liens.

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2.10 Debt; Solvency. (a) Except for the existing mortgage debt with respect to each Real Property, as described on Schedule 2.10 attached hereto or in the Registration Statement, no Grantor has any indebtedness other than indebtedness incurred by it in its ordinary course of business (which in no case exceeds $50,000 for any single Grantor or $100,000 in the aggregate). There exists no default or, to the knowledge of the Indemnitors, any event which with the passage of time or notice or both would constitute a default, with respect to any indebtedness of any such person that has not been cured or waived. A true, complete and correct copy of each loan and mortgage document with respect to each Option Property has been delivered to the Operating Partnership or the REIT.

(b) Each Grantor has been and will be solvent at all times prior to and immediately following the transfer of its Interests to the Operating Partnership in connection with the Transactions.

2.11 Financial Statements. The combined financial statements of the Kilroy Group (including the notes thereto) and schedule of the Kilroy Group and, to the knowledge of the Indemnitors, the combined historical summaries of certain revenues and certain expenses of the Acquisition Properties (including the notes thereto) incorporated in the Registration Statement (collectively, the "Financial Statements" and each, individually, a "Financial Statement") have been prepared in accordance with generally accepted accounting principles applied on a consistent basis throughout the periods specified. The combined balance sheets in the Financial Statements fairly present the financial condition of the Kilroy Group as of the dates shown and the combined income statements and the combined cash flow statements in the Financial Statements fairly present the results of operations and cash flows, respectively, of the Kilroy Group for the periods indicated and, to the knowledge of the Indemnitors, the combined historical summaries of certain revenues and certain expenses in the Financial Statements fairly present certain revenues and certain expenses of the Acquisition Properties for the periods indicated. There are no material known encumbrances, debts, liabilities or obligations of any nature, whether direct or indirect, contingent or non-contingent, or matured or unmatured of the Kilroy Group that are not described in such Financial Statements.

2.12 Financial Condition. Since the date of the Financial Statements, there has been no material adverse change in the condition (financial or otherwise), earnings, assets, business, affairs or business prospects of any Grantor and no event has occurred or circumstance exists that may result in such a material adverse change. No Grantor (i) is in receivership or dissolution,
(ii) has made an assignment for the benefit of creditors or admitted in writing its inability to pay its debts as they mature, or (iii) has been adjudicated a bankrupt or filed a petition in voluntary bankruptcy or a petition or answer seeking reorganization or an arrangement with creditors under the federal bankruptcy law or any other similar law or statute of the United States or any jurisdiction and no such petition has been filed against any Grantor.

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2.13 Contracts. Except for (i) agreements relating to mortgage financing to be repaid on the Closing Date, (ii) the leases referred to in
Section 2.14 below, or (iii) the ground and air space leases referred to in
Section 2.15 below, Schedule 2.13 attached hereto lists all contracts or other understandings, written or oral, to which any Grantor is a party or by which any Grantor is bound that relate to the Properties or that will otherwise become binding on the Operating Partnership, the REIT or the Services Company following consummation of the Transactions (collectively, the "Contracts" and each, a "Contract"). For purposes of this Section 2.13, "Contracts" means (a) contracts which are required to be filed as exhibits to a registration statement or report under Item 601 of Regulation S-K promulgated under the Securities Act and (b) contracts or other understandings which are known to the Indemnitors and involve performance of services or delivery of goods or materials of an amount or value in excess $50,000 or were entered into by a Grantor other than in the ordinary course of business. A true, complete and correct copy of each Contract (including all amendments, modifications and supplements thereto) has been delivered to the REIT or the Operating Partnership. To the knowledge of the Indemnitors, each of the Contracts is valid and binding and is in full force and effect. To the knowledge of the Indemnitors, no Grantor and no other party to any Contract has breached or defaulted under the terms of such Contract or given or received any notice of default of any provision of such Contract, except for such breaches or defaults that would not, singly or in the aggregate, have a material adverse effect on the condition (financial or otherwise), earnings, assets, business affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions. To the knowledge of the Indemnitors, each of the Contracts will continue to be binding in accordance with its terms following the consummation of the Transactions and is freely assignable to the Operating Partnership.

2.14 Leases; Rent Rolls. A true, complete and correct copy of the leases (including all amendments, modifications and supplements thereto) for each Real Property (other than the ground and air space leases referred to in
Section 2.15 below) have been delivered to the REIT or the Operating Partnership. The rent roll attached hereto as Schedule 2.14(a) for each Real Property is a true, correct and complete schedule of all space leases, occupancy agreements and licenses (and annexes and riders thereto) and tenants relating to the Real Properties and was true and correct as of the date thereof, and there have been no material changes to such rent roll since the date thereof. To the knowledge of the Indemnitors, each of such leases is valid and binding and is in full force and effect. To the knowledge of the Indemnitors, no party to any such lease has breached or defaulted under the terms of such lease or given or received any notice of default of any provision of any such lease, except for such breaches or defaults as would not, singly or in the aggregate, have a material adverse effect on the condition (financial or otherwise), earnings, assets, business affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions. No tenant under any such lease has been granted a right to early termination of such lease, except as set forth on Schedule 2.14(b) attached hereto. To the knowledge of the Indemnitors, each of such leases will continue to

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be binding in accordance with its terms following the consummation of the Transactions and is freely assignable to the Operating Partnership.

2.15 Ground and Air Space Leases. Schedule 2.15 attached hereto lists all ground and air space leases held by Grantors with respect to the Real Properties, and a true, complete and correct copy of each such ground and air space lease (including all amendments, modifications and supplements thereto) has been delivered to the REIT or the Operating Partnership. To the knowledge of the Indemnitors, each of such ground and air space leases is valid and binding and is in full force and effect. To the knowledge of the Indemnitors, no party to any such ground or air space lease has breached or defaulted under the terms of such lease or given or received any notice of default of any provision of any such lease. To the knowledge of the Indemnitors, each of such ground and air space leases will continue to be binding in accordance with its terms following the consummation of the Transactions and is freely assignable to the Operating Partnership.

2.16 Permits. To the knowledge of the Indemnitors, there exists for each Real Property, and the Grantors will convey to the Operating Partnership on the applicable date of closing of the acquisition of a Real Property as set forth in the Omnibus Agreement and in the Option Properties Agreements, all certificates, licenses, permits, registrations and other authorizations from federal, state or other governmental agencies, authorities or regulatory bodies or political subdivisions (collectively, "Permits") as are necessary for the ownership, use, occupancy, management, leasing, construction, operation and licensing of such Real Property as it is currently being operated. To the knowledge of the Indemnitors, all such Permits are in full force and effect and no such Permit has been violated in any material respect. To the knowledge of the Indemnitors, no Grantor has taken any action which, or failed to take any action the omission of which, would result in the revocation of such Permits. None of the Indemnitors has received notice of any intention of any such granting authority to cancel, suspend or modify any of the Permits. To the knowledge of the Indemnitors, the Permits are assignable to the Operating Partnership. To the knowledge of the Indemnitors, neither the execution of this Agreement nor the consummation of the Transactions will create any right of termination, revocation or expiry on the part of any such granting authority.

2.17 Litigation; Moratoria, Etc. No claims, actions, suits, proceedings or investigations have been instituted or, to the knowledge of the Indemnitors, threatened against any Grantor, or any of the properties or rights (including, without limitation, any Property) of any Grantor or that otherwise relate to or may affect the business or any of the properties (including, without limitation, any Property) of any Grantor, before or by any court, administrative agency or body, or federal, state or other governmental agency, authority or regulatory body, domestic or foreign, that would have a material adverse effect on the condition (financial or otherwise), earnings, business, affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions. No Grantor or Real Property is subject to any order, writ, judgment, injunction or decree of any court,

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tribunal or other federal, state or other governmental, agency, authority or regulatory body (other than generally applicable laws, rules and regulations) that would have a material adverse effect on the condition (financial or otherwise), earnings, business, affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions. Except as disclosed in the Registration Statement, there is no pending or, to the knowledge of the Indemnitors, threatened litigation, moratorium, condemnation or eminent domain proceedings, zoning change, or other similar proceeding or action, or private purchase in lieu of such a proceeding or action, that is likely to in any manner affect the size of, use of, improvements on, construction on, access to or availability of utilities or other necessary services to, any Real Property, except such proceedings or actions that would not, singly or in the aggregate, have a material adverse effect on the condition (financial or otherwise), earnings, assets, business, affairs or business prospects of or with respect to such Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions.

(b) All claims, suits or proceedings asserted or instituted by ACD2, a California corporation, or its affiliates or by Hughes Aircraft Company or Hughes Electronic Corporation's Space & Communications Company or its affiliates, in each case against any member of the Kilroy Group or its affiliates either have been settled with prejudice or dismissed pursuant to a final judgment with prejudice, the time for appeal therefrom having expired.

2.18 Compliance with Laws, Etc. To the knowledge of the Indemnitors, no Grantor or proper representative thereof has received any written or other notice of any violation of any applicable law, regulation, rule, order or code (including, without limitation, any zoning code, building code, or similar law, regulation or ordinance, or any employment, environmental, health or other regulatory law, order, regulation, or requirement) or any recorded covenant, easement, restriction or similar agreement or instrument, relating to a Real Property which remains uncured, or has received any written or other notice that any investigation has been commenced or is contemplated respecting any such possible violation, and, to the knowledge of the Indemnitors, there are no such violations which, individually or in the aggregate, would have a material adverse effect on the condition (financial or otherwise), earnings, business, affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions.

2.19 Taxes, Utilities, Etc. (a) All tax or information returns for all periods ending on or before or including the Closing Date that are or were required to be filed by or on behalf of any Grantor have been or will be filed on a timely basis and in accordance with all applicable laws, regulations and administrative requirements. All such tax or information returns that have been filed on or before the Closing Date were, when filed, and continue to be, true, correct and complete. All such tax or information returns that will

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be filed after the Closing Date will be true, correct and complete when filed by or on behalf of such Grantor.

(b) There is no action, suit or proceeding pending against, or with respect to, any Grantor or Property in respect of any tax (other than tax abatement proceedings) nor is any claim for additional tax asserted by any taxing authority. No Grantor has given or been requested to give waivers or extensions (or is or would be subject to a waiver or extension given by any other person) of any statute of limitations relating to the payment of taxes for which such Grantor may be liable.

(c) Grantors have paid, or made provision for the payment of, all taxes (other than transfer taxes incurred in connection with the Transactions) that have or may become due for all periods ending on or before or including the Closing Date, including, without limitation, all taxes reflected on the tax returns referred to in this Section 2.19, or in any assessment or notice (either formal or informal) received by Grantors or any affiliated party with respect to any Grantor, except such taxes as are set forth in Schedule 2.19(c) that are being contested in good faith and as to which adequate reserves (determined in accordance with generally accepted accounting principles consistently applied) have been provided. All taxes (other than transfer taxes incurred in connection with the Transactions) that the Grantors are or were required by law to withhold or collect have been duly withheld or collected and, to the extent required, have been paid to the appropriate governmental authority. There are no Liens with respect to taxes upon any of the properties or assets of the Grantors.

(d) There is no existing tax sharing agreement to which any Grantor is a party that may or will require that any payment be made by Grantors or any of their affiliates on or after the date hereof.

(e) No amounts due and owing with respect to any Real Property in connection with utilities, insurance, assessments or other charges customarily prorated in real estate transactions have been outstanding.

(f) The Transactions will not result in any tax liability to the REIT or the Operating Partnership, other than customary documentary real estate transfer taxes with respect to Real Properties located in California in an amount not to exceed [$1.10 per $1,000] in value of real property.

2.20 Insurance. Each Entity, as applicable, currently has in place, and upon consummation of the Transactions the REIT will have in place, the public liability, casualty and other insurance coverage with respect to its Real Property as is required by the applicable mortgage financing documents which may be assumed by the REIT or the Operating Partnership if any of the Option Properties is acquired by the Operating Partnership and the applicable mortgage financing documents to be placed by the REIT or the Operating Partnership on any Real Property (as described in the Registration Statement)

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and as would otherwise customarily be carried by owners or operators of projects similar to the Real Properties in the markets in which such Real Properties are located. Each insurance policy with respect to a Real Property currently in place is, and each insurance policy with respect to a Real Property which will be in place upon consummation of the Transactions will be on such date, in full force and effect and all premiums due and payable thereunder have been or will be (as the case may be) fully paid when due. None of the Indemnitors has received from any insurance company notice of any material defects or deficiencies affecting the insurability of any Real Property or any notices of cancellation or intent to cancel any such insurance.

2.21 Employees. The employees listed on Schedule 2.21 attached hereto constitute all of the employees used in the operation of the Kilroy Group's Business in a manner consistent with its historic operations up to the Closing Date. Except for ______________________ [INSERT NAMES], all such persons earn less than $______________ per annum, are entitled to no more than ______________ weeks of vacation per annum and are not entitled to any profit sharing, severance pay or any health or benefit plans or arrangements other than those substantially similar to ________________ plan which is described on Schedule 2.21. Except as set forth on Schedule 2.21, there are no (a) union contracts, collective bargaining agreements or other written agreements in respect of any employees and no verbal agreements requiring employment for any specified period of time or under which employment cannot be terminated without cause upon reasonable notice, (b) accrued or retroactive wage or salary increases or pension or other benefits to which any employee is entitled, and
(c) profit sharing, bonus, deferred compensation, incentive compensation, stock purchase, stock option, severance or termination pay, hospitalization or other medical, life or other insurance, supplemental unemployment benefits, pension, retirement or other benefit plans or "employee benefit plans" (withing the meaning of Section 3(3) of ERISA), and no Grantor or affiliate thereof has contributed to any "multiemployer plan" (within the meaning of Section 3(37) of ERISA) during the five years preceding the date of this Agreement. All of the employees listed on Schedule 2.21 have been paid in full to their last payment period, in accordance with the terms of their respective employment agreements, if any, all payroll taxes and other taxes, fees and charges in connection with such employees have been paid to such date, and no employee has accrued vacation time in excess of ________ days. Other than a $200,000 bonus payable to Richard E. Moran Jr. if the IPO is consummated on or before June 30, 1997, no other employee of the Kilroy Group or of the REIT or the Operating Partnership is or will be entitled to receive a bonus in connection with the IPO.
[NOTE: ADDITIONAL REPRESENTATIONS CONCERNING ERISA PLANS MAY BE REQUIRED BASED ON ITEMS DISCLOSED ON SCHEDULE.]

2.22 Environmental. To the knowledge of each Indemnitor, except as set forth on Schedule 2.22 and in the Registration Statement:

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(a) no Hazardous Substances (as defined below) are present in the Environment (as defined below) at any Real Property in amounts or concentrations that would have a material adverse effect on the condition (financial or otherwise), earnings, assets, business, affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions;

(b) no Grantor has caused or allowed any discharging or disposal of any Hazardous Substance or pollutant into the Environment at any Real Property in violation of any Environmental Law (as defined below) applicable to such Real Property in an amount or concentration that would have a material adverse effect on the condition (financial or otherwise), earnings, assets, business, affairs, or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions;

(c) no Grantor has received any notice of a claim under or pursuant to any Environmental Law applicable to a Real Property pertaining to Hazardous Substances on any Real Property or pertaining to other property at which Hazardous Substances generated at any Real Property have come to be located, which claim would have a material adverse effect on the condition (financial or otherwise), earnings, assets, business, affairs, or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions;

(d) no Grantor has received any notice from any Governmental Authority (as defined below) claiming any violation of any Environmental Law at any Real Property that is uncured or unremediated as of the date hereof, which violation would have a material adverse effect on the condition (financial or otherwise), earnings, assets, business, affairs, or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions;

(e) no Real Property (A) is included in the National Priorities List issued pursuant to CERCLA (as defined below) by the United States Environmental Protection Agency (the "EPA") or in the Comprehensive Environmental Response, Compensation and Liability Information System database maintained by the EPA or (B) is included in any similar list of potentially contaminated sites pursuant to any other applicable Environmental Law, and no Grantor has received any written notice from the EPA or any other Governmental Authority proposing the inclusion of any Real Property on such list;

(f) all reports of environmental surveys, audits, investigations and assessments relating to the Real Properties have been disclosed to the Operating Partnership or the REIT; and

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(g) except as would not have a material adverse effect on the condition (financial or otherwise), earnings, assets, business, affairs, or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions, all permits and licenses required under any Environmental Law with respect to the Real Properties have been obtained and the Real Properties are in compliance with the terms and conditions of such permits and licenses.

As used in this Section 2.22, "Hazardous Substance" shall mean asbestos containing materials, polychlorinated biphenyls or any hazardous substance, hazardous material, hazardous waste, toxic substance, toxic material, toxic waste, oil, petroleum, or petroleum-derived substance or waste, listed or regulated under the Comprehensive Environmental Response, Compensation and Liability Act, as amended (42 U.S.C. (S)(S) 9601 et seq.) ("CERCLA"), the Resource Conservation and Recovery Act, as amended (42 U.S.C. (S)(S) 6901, et seq.) ("RCRA"), or any other Environmental Law affecting the Real Properties; "Environment" shall mean any ambient air, surface water, ground water, land surface, or subsurface strata located at, on, or under the Real Properties; "Environmental Law" shall mean CERCLA, RCRA, the Clean Air Act, as amended (42 U.S.C. (S)(S) 7401 et seq.), or the Clean Water Act, as amended (33 U.S.C. (S)(S) 1251 et seq.), together with all laws, rules, regulations, statutes, ordinances and orders promulgated thereunder and all other federal, state and local laws, relating to the protection of the environment or the safety and health of persons from exposure to any actual or potential release, removal, discharge or emission of Hazardous Substances; "Governmental Authority" shall mean any federal, state or local governmental office, agency or authority having the duty or authority to promulgate, implement or enforce any Environmental Law.

2.23 Condition of Property; No Alterations. To the knowledge of the Indemnitors, there is no material defect in the condition of any Real Property, nor any material damage from uninsured casualty or other cause, nor any soil condition of any such Real Property that will not support all of the improvements thereon without the need for unusual or new subsurface excavations, fill, footings, caissons or other installations, except for any such defect, damage or condition that has been corrected or will be corrected in the ordinary course of the business of such Real Property as part of its scheduled annual maintenance and improvement program. Except as set forth on Schedule 2.23 attached hereto, to the knowledge of the Indemnitors, no Grantor has any agreement or other arrangement with any governmental authority or any other person to make capital improvements with respect to any Real Property. To the knowledge of the Indemnitors, there have been no alterations to the exteriors of any of the buildings or other improvements on any Real Property that would render any surveys provided to the Operating Partnership or the REIT in connection with the Transactions grossly inaccurate or otherwise reflect a material deficiency in title to such improvements.

2.24 Non-Foreign Status. No Grantor is a foreign person, foreign corporation, foreign partnership, foreign trust or foreign estate (as defined in the Code),

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and, therefore, no Grantor is subject to the provisions of the Code relating to the withholding of sales proceeds to foreign persons.

2.25 Mechanics' Liens. All material bills and claims for labor performed and materials furnished to or for the benefit of the Real Properties have been paid in full (or otherwise provided for), and there are no mechanics' or materialmen's liens (whether or not perfected) affecting the Real Properties which, individually or in the aggregate, would have a material adverse effect on the condition (financial or otherwise), earnings, business, affairs or business prospects of any Real Property, the Kilroy Group's Business or, following the consummation of the Transactions, the REIT or the Operating Partnership or on the Transactions.

2.26 Trademarks and Tradenames; Proprietary Rights. To the knowledge of the Indemnitors, there are no actions or other judicial or administrative proceedings involving any Grantor, Entity or Property outstanding or threatened that concern any copyrights, copyright application, trademarks, trademark registrations, trade names, service marks, service mark registrations, trade names and trade name registrations or any trade secrets (the "Proprietary Rights") being transferred to the Operating Partnership in connection with the Transactions or involving the "Kilroy" name. To the knowledge of the Indemnitors, there are no patents or patent applications relating to the operation of the Properties or the Kilroy Group's Business as conducted prior to the Closing.

(b) The Grantors have the right and authority to use the "Kilroy" name, and, to the knowledge of the Indemnitors, the right and authority to use each Proprietary Right being transferred to the REIT or the Operating Partnership in connection with the Transactions necessary, in connection with the operation of the Properties and the Kilroy Group's Business in the manner in which it is currently used. The Grantors have the right and authority to license such right and authority with respect to the "Kilroy" name to the REIT and the Operating Partnership and, to the knowledge of the Indemnitors, the Grantors have the right and authority to convey such right and authority with respect to such Proprietary Rights to the REIT and the Operating Partnership, in each case in connection with the Transactions. The current use of the "Kilroy" name, and, to the knowledge of the Indemnitors, each such Proprietary Right, does not, and such use did not, conflict with, infringe upon or violate any copyright, trade secret, trademark or registration of any other person.

(c) To the knowledge of the Indemnitors, there are no outstanding or threatened disputes or disagreements with respect to any Proprietary Right being transferred to the Operating Partnership in connection with the Transactions, the "Kilroy" name or any license, contract, agreement or other commitment, written or oral, relating to the same.

2.27 No Misrepresentations. No representation, warranty or statement made, or information provided, by the Indemnitors in this Agreement or the Grantors in the Consents and Power of Attorney, the Omnibus Agreement or the Option Properties

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Agreements or in any other document or instrument furnished or to be furnished by or on behalf of the Grantors pursuant thereto or as contemplated thereby (i) contains or will contain any untrue statement of a material fact or (ii) omits or will omit to state a material fact necessary to make statements contained herein or therein not misleading.

2.28 Prior Real Property Developments. The real property developments set forth on Schedule 2.28 attached hereto constitute all real property development work that any member of the Kilroy Group or its affiliates has performed since January 1, 1992.

2.29 Foreclosures. Except as described in the Registration Statement, no foreclosures have been instituted, and to the knowledge of the Indemnitors none are currently threatened, with respect to any property or assets (including the Properties) directly or indirectly owned (whether now or in the past) by any member of the Kilroy Group or its affiliates.

2.30 Bankruptcy. (a) No proceeding or filing of a petition seeking relief under Title 11 of the United Sates Code or any other federal, state or foreign bankruptcy, insolvency, liquidation or similar law has been commenced or instituted (whether voluntary or involuntary) by or with respect to any member of the Kilroy Group or its affiliates, (b) no member of the Kilroy Group or affiliates thereof has applied for or consented to the appointment of a receiver, trustee, custodian, sequestrator or similar official for any such persons or for a substantial part of any such persons' property or assets and
(c) no member of the Kilroy Group or affiliates thereof has made a general assignment for the benefit of its creditors.

2.31 Formation Transactions. Each of the transactions constituting the Formation Transactions (as defined in the Registration Statement) has occurred, or, if contemplated in the Registration Statement to occur subsequent to the Closing Date, will occur in the manner described in the Registration Statement.

2.32 Termination of Falck. Randall Falck's employment with KI was terminated on October 31, 1996. Mr. Falck is not employed by any other member of the Kilroy Group. Any and all claims of Mr. Falck against KI or any other member of the Kilroy Group or its affiliates in connection with the termination of his employment with KI and the related repurchase of his interests in certain Properties and certain entities affiliated with the Kilroy Group have been settled with prejudice pursuant to a Settlement Agreement and Mutual General Release between KI and Randall Falk and Penny Falk effective as of January 8, 1997. A true, complete and correct copy of such Settlement Agreement has been delivered to the REIT. Such Settlement Agreement is valid and binding and in full force and effect and has not been amended. No party to such Settlement Agreement has breached or defaulted under the terms of such Settlement Agreement or given or received any notice of default of any provision of such Settlement Agreement. Mr. Falk has no right to receive any property, other than cash payable pursuant to the terms of such Settlement Agreement, in connection with such termination of employment and repurchase of interests.

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2.33 Development Obligations. Except as described in the Registration Statement or on Schedule 2.33 attached hereto, (a) no Grantor has any material obligations or liabilities which remain to be performed or fulfilled under or in connection with (i) the Development Management Agreement with respect to the Riverside Judicial Center or (ii) the Agreement to Provide Real Estate Services and Exclusive Broker Employment Agreement, each with respect to the property located in the City of Pico Rivera which currently serves as Northrop Grumman's headquarters for certain activities, and (b) no Grantor has any obligation to make a material investment in additional infrastructure improvements with respect to Kilroy Long Beach Phases III and IV.

3. Additional Representations and Warranties with Respect to the
Indemnitors. Each Indemnitor hereby further represents and warrants to the REIT and the Operating Partnership as follows:

3.1 Authority Relative to this Agreement. Each Indemnitor has the requisite power and authority and, with respect to each Indemnitor who is a natural person, full legal right and capacity, to execute and deliver this Agreement and to perform it or his obligations under this Agreement. All action of each Indemnitor necessary to authorize the execution, delivery and performance of this Agreement by such Indemnitor has been taken, and no other proceedings on the part of such Indemnitor are necessary to authorize the execution and delivery by such Indemnitor of this Agreement and the consummation by such Indemnitor of the transactions contemplated hereunder. Neither the execution and delivery of this Agreement by such Indemnitor, nor the consummation by such Indemnitor of the transactions contemplated hereunder, nor performance by such Indemnitor of any of its or his obligations under this Agreement does or will (i) conflict with or result in a violation or any breach of any provisions of the Organizational Documents, as applicable, of such Indemnitor, (ii) conflict with, result in a violation or breach of, or constitute (with or without due notice or lapse of time or both) a default (or give rise to any right of termination, cancellation or acceleration) under any of the terms, conditions or provisions of any note, bond, mortgage, indenture, lease, license, easement, restriction, contract, agreement or other instrument or obligation to which such Indemnitor is a party or is subject or by which such Indemnitor or any of its properties or other assets may be bound, or (iii) conflict with or violate any provision of any law, statute, rule or regulation or any judgment, order, writ, injunction, decree, rule or regulation of any court or federal, state or other governmental agency, authority or regulatory body applicable to such Indemnitor or any of its properties or other assets or result in the creation of any Lien upon the Properties or such Indemnitor's Interest.

3.2 Binding Obligation. This Agreement has been duly and validly executed and delivered by each Indemnitor and constitutes a legal, valid and binding obligation of such Indemnitor, enforceable against such Indemnitor in accordance with its terms.

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3.3 Consents and Approvals. No consent, waiver, approval, authorization or other action of, or filing or registration with, any federal, state or other governmental agency, authority or regulatory body or any other person is required to be obtained in connection with the execution, delivery and performance of this Agreement, except any of the foregoing that shall have been obtained and are in full force and effect.

3.4 Registration Statement. The Indemnitors have reviewed the Registration Statement and represent and warrant that it did not, when it was declared effective, contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements therein not misleading. The Indemnitors have reviewed each preliminary prospectus provided to the underwriters for use in connection with the issuance and sale of the REIT's common stock in the IPO and the final prospectus in connection with the IPO and represent and warrant that each such preliminary prospectus and final prospectus did not, when it was filed with the Commission, (i) contain any untrue statement of a material fact or (ii) omit to state any material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. This Section 3.4 does not apply to statements or omissions made in the Registration Statement or any preliminary or final prospectus in connection with the IPO in reliance upon and in conformity with written information furnished by the underwriters involved in the IPO.

4. Indemnity, Limitations on Liability. Subject to the terms hereof, the Indemnitors hereby agree to indemnify and hold harmless the REIT and the Operating Partnership (each, a "Covered Party") from any damage, expense, loss, cost, claim or liability (each a "Claim") suffered or incurred by any Covered Party as a result of (i) any inaccuracy in any representation or warranty contained herein, in any Grantor Agreement or in the Pledge Agreement, (ii) any breach or nonfulfillment by any Grantor of any of its covenants, agreements or other obligations contained in or made pursuant to any Grantor Agreement or the Pledge Agreement and (iii) any Excluded Liability. Notwithstanding anything to the contrary contained in this Agreement, the liability of the Indemnitors hereunder shall be joint and several; provided, however, that John B. Kilroy, Sr. and John B. Kilroy, Jr. shall not be liable for any inaccuracy in the representations and warranties set forth in Sections 2.1, 2.2, 2.3, 2.4, 3.1, 3.2 and 3.3 hereof to the extent only that such representations and warranties pertain to John B. Kilroy, Jr. as an individual or John B. Kilroy, Sr. as an individual, respectively; provided, further, that recourse against the Indemnitors shall, so long as the REIT shall have a valid, first priority perfected lien on and security interest in the Collateral described in the Pledge Agreement referred to in Section 5 hereof, be limited to the rights of the Indemnitors in such Collateral.

5. Pledge of Units.

5.1 Pledge Agreement. As security for the full and timely performance of their indemnification obligations hereunder, the Indemnitor, agree to execute and deliver a Pledge Agreement and the documents referred to therein (the "Pledge Agreement") in the

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form of Exhibit D attached hereto and to make the deliveries and perform the obligations required thereunder.

5.2 Agent for Pledgees.

(a) Appointment. Each Covered Party hereby designates and appoints the REIT as its agent under the Pledge Agreement, and each Covered Party hereby irrevocably authorizes the REIT to take such action or to refrain from taking such action on its behalf under the provisions of the Pledge Agreement and to exercise such powers as are set forth therein, together with such other powers as are reasonably incidental thereto. The REIT is authorized and empowered to amend, modify or waive any provisions of the Pledge Agreement on behalf of the Covered Parties. The REIT agrees to act as such on the express conditions contained in this Section 5.2. The provisions of this Section 5.2 are solely for the benefit of the REIT and the Covered Parties and no Indemnitor shall have any rights as a third party beneficiary of any of the provisions hereof. In performing its functions and duties under the Pledge Agreement, the REIT shall act solely as an administrative representative of the Covered Parties and does not assume and shall not be deemed to have assumed any obligation toward or relationship of agency or trust with or for the Covered Parties, by or through its agents or employees.

(b) Duties; Rights; Exculpation; Etc. The REIT shall have no duties, obligations or responsibilities to the Covered Parties except those expressly set forth in this Section 5.2 or in the Pledge Agreement. Neither the REIT nor any of its officers, directors, employees or agents shall be liable to any Covered Party for any action taken or omitted by them under this Section 5.2 or under the Pledge Agreement, or in connection with this Section 5.2 or the Pledge Agreement, except that the REIT shall be obligated on the terms set forth in this Section 5.2 for performance of its express obligations under the Pledge Agreement. In performing its functions and duties under the Pledge Agreement, the REIT shall exercise the same care which it would exercise in dealing with a security interest in collateral held for its own account, but the REIT shall not be responsible to any Covered Party for any recitals, statements, representations or warranties in the Pledge Agreement or for the execution, effectiveness, genuineness, validity, enforceability or sufficiency of the Pledge Agreement or the Collateral or the transactions contemplated thereby. The REIT shall not be required to make any inquiry concerning either the performance or observance of any of the terms, provisions or conditions of the Pledge Agreement, or the existence or possible existence of any Event of Default (as defined in the Pledge Agreement).

(c) Reliance. The REIT shall be entitled to rely upon any written notices, statements, certificates, orders or other documents or any telephone message or other communication (including any writing, telex, telecopy or telegram) believed by it in good faith to be genuine and correct and to have been signed, sent or made by the proper person, and with respect to all matters pertaining to this Section 5.2 and the Pledge Agreement and its duties under this Section 5.2 or the Pledge Agreement, upon advice of

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counsel selected by it. The REIT shall be entitled to rely upon the advice of legal counsel, independent accountants, and other experts selected by the REIT in its sole discretion.

(d) Indemnification. Each Covered Party, jointly and severally, reimburse and indemnify the REIT and its directors, officers, employees and agents for any damage, expense, loss, cost, claim or liability which may be imposed on, incurred by, or asserted against the REIT or such other persons in any way relating to or arising out of this Section 5.2 or the Pledge Agreement or any action taken or omitted by the REIT or such other persons under this Section 5.2 or the Pledge Agreement. The obligations of the Covered Parties under this Section 5.2(d) shall survive the termination of the Survival Period, the return of any Collateral and the termination of this Agreement and the Pledge Agreement.

(e) Other Business. The Covered Parties acknowledge and agree that the REIT may exercise its rights and powers under other agreements and instruments to which it is or may be a party, and engage in other transactions and any kind of business with the Indemnitors or their affiliates, as though it were not the agent of the Covered Parties under the Pledge Agreement.

6. Survival; Agreements Regarding Certain Claims. It is the express intention and agreement of the parties hereto that the representations, warranties and indemnities set forth in this Agreement shall survive the closing of the IPO for a period (the "Survival Period") commencing on the date hereof and ending on the later of (a) June 30, 1998 and (b) the ninetieth day after the date of delivery to the REIT's Board of Directors of audited financial statements of the REIT for the REIT's first full fiscal year following the IPO and (except as specifically provided below in this Section 6) shall expire and be terminated and extinguished forever at such time, except with respect to claims asserted against any Indemnitor in good faith pursuant hereto by written notice from any or all of the Covered Parties to such Indemnitor at any time within the Survival Period. Any written notice given within the Survival Period must set forth the nature and details of the Claim with reasonable specificity (to the extent then known) in order to constitute a valid notice pursuant to the preceding sentence. Each Covered Party agrees that, in the event that such Covered Party could reasonably make any claim with respect to a matter covered by this Agreement under any existing policy of insurance or against any Grantor under a Grantor Agreement, such Covered Party shall, prior to taking any action hereunder against any Indemnitor, make a claim under such policy or against such Grantor and thereafter shall use reasonable efforts to prosecute such claim to completion; provided, however, that from and after (i) the time that notice is given to an Indemnitor that a Claim exists but that coverage therefor is being sought from an insurer or Grantor under a Grantor Agreement and that no action or (in accordance with the preceding proviso) limited action is being taken against such Indemnitor (provided such notice is given within the Survival Period) through and including (ii) thirty days after the date of abandonment (by non-prosecution or otherwise) of such Claim against such carrier or Grantor (or other final disposition of such Claim) or, if earlier, the applicable limitations period for such claim, the Survival Period with respect to

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that Indemnitor and that Claim only and no other Claim (other than other Claims satisfying the conditions of this proviso) shall be stayed, as necessary, to preserve such Covered Party's rights against such Indemnitor under this Agreement. The amounts recovered under an insurance policy or from any Grantor with respect to any Claim shall be credited against the Indemnitors' liability with respect to such Claim.

7. Miscellaneous.

7.1 Notices. All notices, demands, requests or other communications which may be or are required to be given or made either by the Indemnitors, on the one hand, or the REIT or the Operating Partnership, on the other hand, pursuant to this Agreement shall be in writing and shall be hand delivered or transmitted by certified mail (return receipt requested), express overnight mail or delivery service, telegram, telex or facsimile transmission to the parties at the following addresses:

If to any Indemnitor, to:         c/o Kilroy Industries
                                  2250 East Imperial Highway
                                  El Segundo, California  90245
                                  Attn: ___________________
                                  Fax:  (___) ___-____

With a copy to:                   ________________________
                                  ________________________
                                  ________________________
                                  ________________________

If to the REIT or the
Operating Partnership to:         2250 East Imperial Highway
                                  El Segundo, California  90245
                                  Attn: ____________________
                                  Fax:  (___) ___-____

With a copy to:                   Edward Sonnenschein, Jr., Esq.
                                  Latham & Watkins
                                  633 West Fifth Street
                                  Los Angeles, California  90071
                                  Fax:  (213) 891-8763

or to such other address in the United States of America as the addressee may indicate by written notice to the other party in conformance with this Section 7.1.

Each notice, demand, request or communication which shall be given or made in the manner described above shall be deemed sufficiently given or made for all purposes at such time as it is delivered to the addressee (with the delivery receipt, the

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affidavit of messenger or (with respect to a telex) the answer back being deemed conclusive but not exclusive evidence of such delivery) or at such time as delivery is refused by the addressee upon presentation.

7.2 Further Assurances. The Indemnitors shall duly execute and deliver, or cause to be duly executed and delivered, to the REIT or the Operating Partnership (as applicable) such further instruments and documents and take and cause to be taken such further actions as may be necessary or proper in the reasonable opinion of the REIT or the Operating Partnership to cause the Operating Partnership to be (a) (i) the owner and holder of the ground leasehold estate and ground lessee's interest in the land comprising the Kilroy Airport Center Long Beach Property and the ground and air space leasehold estates and ground and air space lessees' interests in the land comprising the SeaTac Office Center Property and (ii) the owner and holder of good, valid and marketable fee simple title to each of the Real Properties (other than the land described in clause (i)), in each case pursuant to the terms of the Omnibus Agreement or the Option Properties Agreement (as applicable) and free and clear of all Liens other than the Permitted Liens and (b) the owner and holder of good title to the Personalty pursuant to the terms of the Omnibus Agreement or the Option Properties Agreements (as applicable), free and clear of any Liens other than the Permitted Liens.

7.3 Benefit and Assignment. No party hereto shall assign this Agreement, in whole or in part, whether by operation of law or otherwise, without the prior written consent of the Indemnitor (if the assignor is the Operating Partnership or the REIT) or of the Operating Partnership and the REIT (if the assignor is any Indemnitor); and any purported assignment contrary to the terms hereof shall be null, void and of no force and effect; provided, however, in the event that the Operating Partnership transfers title to any Property to the Services Company and/or any direct or indirect subsidiary of the REIT or the Operating Partnership, the rights, remedies and indemnities of the Operating Partnership hereunder relating to any Property the title of which is transferred shall automatically run to the benefit of the Services Company and/or any such subsidiary and each such transferee shall be deemed to be a Covered Party. In the event that the Operating Partnership transfers title to any Property as described in the proviso of the foregoing sentence, such transferee shall agree in writing that the REIT shall act as its agent under the Pledge Agreement in accordance with Section 5.2 hereof. This Agreement shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors and assigns as permitted hereunder. No person or entity other than the parties hereto is or shall be entitled to bring any action to enforce any provision of this Agreement against any of the parties hereto, and the covenants and agreements set forth in this Agreement shall be solely for the benefit of, and shall be enforceable only by, the parties hereto or their respective successors and assigns as permitted hereunder.

7.4 Entire Agreement; Amendment. This Agreement contains the final and entire agreement between the parties hereto with respect to the subject matter hereof and is intended to be an integration of all prior negotiations and understandings. The

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parties to this Agreement shall not be bound by any terms, conditions, statements, warranties or representations, oral or written, not contained or referred to herein or therein. No change or modification of this Agreement shall be valid unless the same is in writing and signed by all of the parties hereto.

7.5 GOVERNING LAW. THIS AGREEMENT, THE RIGHTS AND OBLIGATIONS OF THE PARTIES HERETO AND ANY CLAIMS OR DISPUTES RELATING THERETO SHALL BE GOVERNED BY AND CONSTRUED UNDER THE LAWS OF THE STATE OF CALIFORNIA.

7.6 Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed an original, but all of which when taken together shall constitute one and the same instrument.

7.7 Definition of Knowledge. As used herein, "to the knowledge" of an Indemnitor means the actual knowledge of an individual Indemnitor.

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IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to be duly executed and delivered on its behalf as of the date first above written.

KILROY REALTY, L.P.

By: Kilroy Realty Corporation,
its General Partner

By: _______________________________
Name:
Title:

KILROY REALTY CORPORATION

By: _______________________________
Name:
Title:

INDEMNITORS:

KILROY INDUSTRIES

By: _______________________________
Name:
Title:


John B. Kilroy, Sr.


John B. Kilroy, Jr.

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SCHEDULE 1

LIABILITIES NOT ASSUMED

1. All obligations to fund tenant improvements and leasing commissions pursuant to leases signed during the period commencing on October 1, 1996 and ending on December 20, 1996.

2. Any compensation payable to an officer or employee of the REIT or any of its subsidiaries for his or her services in connection with the IPO, including, without limitation, a $200,000 bonus payable to Richard E. Moran Jr. if the IPO is consummated on or before June 30, 1997.

3. All liabilities in connection with the termination of employees by any member of the Kilroy Group.

4. Other than as set forth in the September 30, 1996 pro forma condensed consolidated balance sheet of the REIT included in the Registration Statement, all liabilities in connection with actions taken by the Kilroy Group to effect the Transactions and the IPO.

5. All liabilities in connection with development projects of the Kilroy Group other than the Properties (including Kilroy Airport Center Long Beach Phases III and IV).

6. All liabilities in connection with the construction of a freeway on-ramp at the Kilroy Airport Center in El Segundo Property.

7. All mechanics' or materialmens' liens outstanding with respect to the Properties.

8. All taxes other than real property taxes that are not by their terms past due.

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EXHIBIT A

EXCLUDED INTANGIBLES

[L&W to provide - include Kilroy name]

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EXHIBIT B

PERSONALITY

[L&W to provide]

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EXHIBIT C

REAL PROPERTIES

[L&W to provide]

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EXHIBIT D

FORM OF PLEDGE AGREEMENT

[See Attached]

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EXHIBIT 10.5

PLEDGE AGREEMENT

PLEDGE AGREEMENT, dated ___________, 1997, between Kilroy Industries, a California corporation, John B. Kilroy, Sr. and John B. Kilroy, Jr. (each of the foregoing individuals and entity is referred to herein individually as a "Pledgor" and collectively as the "Pledgors"), and Kilroy Realty Corporation, a Maryland corporation (the "REIT"), for itself and as agent for Kilroy Realty, L.P., a Delaware limited partnership (the "Operating Partnership") and each other person who becomes a Covered Party (as defined in the Representations Agreement defined below) and agrees to such agency (in both such capacities, the "Pledgee").

WHEREAS, the Pledgors are limited partners of the Operating Partnership, pursuant to the Amended and Restated Agreement of Limited Partnership of Kilroy Realty, L.P. dated the date hereof among the REIT, as sole general partner, the Pledgors, as limited partners, and the other limited partners named therein (as such agreement may be amended, modified or supplemented from time to time in accordance with its terms, the "Operating Partnership Agreement"), and such limited partnership interests are evidenced by certificates representing units of limited partnership interest in the Operating Partnership (the "Units");

WHEREAS, the Pledgors, the REIT and the Operating Partnership are parties to that certain Supplemental Representations, Warranties and Indemnity Agreement dated the date hereof (as such agreement may be amended, modified or supplemented from time to time in accordance with its terms, the "Representations Agreement"); capitalized terms used herein but not otherwise defined herein shall have the meanings assigned to such terms in the Representations Agreement;

WHEREAS, the Pledgors agreed to indemnify the REIT and the Operating Partnership for certain losses as set forth in Section 4 of the Representations Agreement (the "Secured Obligations"); and

WHEREAS, in order to secure the full and timely performance of the Secured Obligations, pursuant to the Representations Agreement each of the Pledgors agreed to pledge and grant to the Pledgee, for the Pledgee's own benefit and the benefit of the Operating Partnership and the other Covered Parties, a lien and security interest in, to and under 50% of its Units, as more fully described on Schedule I attached hereto (the "Pledged Units").

NOW, THEREFORE, the parties agree as follows:

1. Grant of Security Interest. As collateral security for the payment, performance and observance of the Secured Obligations, now existing or hereafter arising, absolute or contingent, whether or not due and payable, each of the Pledgors pledges to the

Pledgee, for its own benefit and for the benefit of the Operating Partnership and the other Covered Parties, and grants to the Pledgee, for its own benefit and for the benefit of the Operating Partnership and the other Covered Parties, a security interest in the following property (collectively, the "Collateral"):

(a) the Pledged Units, as more particularly described in Schedule I attached hereto;

(b) all rights of each Pledgor under the Operating Partnership Agreement attributable to its ownership of the Pledged Units, including, without limitation, all rights of such Pledgor in, to and under that portion of its capital account and distributions represented by, or to which such Pledgor is entitled as a result of its ownership of, the Pledged Units;

(c) any additional partnership interests in the Operating Partnership ("Partnership Interests") and/or obligations of the Operating Partnership which may at any time hereafter be acquired by any Pledgor in connection with the Pledged Units and the certificates or other instruments or documents evidencing same;

(d) any additional partnership interests, shares of stock, obligations and/or other property and the certificates or other instruments or documents evidencing the same which may at any time hereafter be delivered by the Pledgors to the Pledgee to be held pursuant to this Agreement;

(e) all distributions and moneys paid or distributed in respect of or in exchange for any or all of the foregoing;

(f) all rights of Pledgor in and to all distributions declared in respect of any or all of the foregoing;

(g) all books and records relating to the foregoing; and

(h) all proceeds and profits of any or all of the foregoing.

2. Delivery of Certificates and Instruments. The Pledgors shall deliver to the Pledgee: (a) the original certificates or other instruments or documents evidencing the Pledged Units concurrently with the execution and delivery of this Agreement, and (b) the original certificates or other instruments or documents evidencing all other Collateral (except for Collateral which this Agreement specifically permits the Pledgors to retain) within ten days after a Pledgor's receipt thereof. All Collateral which is certificated securities shall be in bearer form or, if in registered form, shall be issued in the name of the Pledgee or endorsed to the Pledgee or in blank.

3. Pledgors Remain Liable. Notwithstanding anything herein to the contrary, (a) the applicable Pledgors shall remain liable under the agreements (including, without limitation, the Operating Partnership Agreement) included in the Collateral to the

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extent set forth therein to perform all of their duties and obligations thereunder to the same extent as if this Agreement had not been executed, (b) the exercise by the Pledgee of any of its rights hereunder shall not release any Pledgor from any of its duties or obligations under the agreements (including, without limitation, the Operating Partnership Agreement) included in the Collateral, except to the extent that such duties and obligations may have been terminated by reason of a sale, transfer or other disposition of the Collateral pursuant hereto, and (c) the Pledgee shall have no obligation or liability under the agreements (including, without limitation, the Operating Partnership Agreement) included in the Collateral by reason of this Agreement, nor shall the Pledgee be obligated to perform any of the obligations or duties of any Pledgor thereunder or to take any action to collect or enforce any claim for payment assigned hereunder.

4. Representations, Warranties and Covenants. Each Pledgor represents, warrants and covenants as follows (provided, however, that John B. Kilroy, Sr. makes no representation, warranty or covenant with respect to John B. Kilroy, Jr. or Collateral delivered by John B. Kilroy, Jr. and John B. Kilroy, Jr. makes no representation, warranty or covenant with respect to John B. Kilroy, Sr. or Collateral delivered by John B. Kilroy, Sr.):

(a) Set forth on Schedule I attached hereto is a complete and accurate list and description of all Pledged Units delivered by such Pledgor and such Pledgor is the sole holder of record and sole beneficial owner of the Pledged Units set forth opposite its name free and clear of all claims, mortgages, pledges, liens, encumbrances and security interests of every nature whatsoever, except in favor of the Pledgee and except, with respect to the Pledged Units owned by John B. Kilroy, Jr., Robin Kilroy's interests in distributions in respect of such Pledged Units which are in all respects subject and subordinate to the interests of the Pledgee hereunder as provided in that certain Consent (the "Consent") executed by Robin Kilroy on October 23, 1996. All other Collateral hereafter delivered by such Pledgor to the Pledgee will be held of record and beneficially owned by such Pledgor free and clear of all claims, mortgages, pledges, liens, encumbrances and security interests of every nature whatsoever, except in favor of the Pledgee and except, with respect to other Collateral hereafter delivered by John B. Kilroy, Jr., Robin Kilroy's interests in distributions, if any, in respect of such Collateral which are in all respects subject and subordinate to the interests of the Pledgee hereunder as provided in the Consent.

With respect to each Pledgor which is an entity, the address of its chief executive office and principal place of business, and the location of its books and records relating to the Collateral, is set forth below its signature hereto. With respect to each Pledgor which is an individual, the addresses of its principal and only places of residence/business are set forth below its signature hereto. No Pledgor will change said address or location, or merge or consolidate with any person or change its name, without at least 15 days' prior written notice to the Pledgee, and with respect to any such change in address or name or merger or consolidation, each Pledgor shall execute and deliver to the Pledgee such documents and take such actions as the Pledgee reasonably deems necessary to perfect and protect the Pledgee's security interests in and to the Collateral.

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(c) Such Pledgor will not create, incur, assume or permit to exist any security interest in the Collateral other than the security interest created hereby and other than, with respect to the Collateral delivered by John B. Kilroy, Jr., Robin Kilroy's interests in distributions in respect of such Collateral which are in all respects subject and subordinate to the interests of the Pledgee hereunder as provided in the Consent, or sell, transfer, assign, pledge or grant a security interest in the Collateral to any person other than the Pledgee.

(d) The Pledged Units delivered by such Pledgor constitute the percentage of the outstanding equity of the Operating Partnership as indicated on Schedule I attached hereto.

(e) The Pledged Units constitute 50% of the Partnership Interests of the Operating Partnership owned by such Pledgor.

(f) The Collateral consisting of Partnership Interests are fully paid and are not subject to any options to purchase or similar rights of any kind of any person.

(g) Such Pledgor, if an entity, is a corporation duly organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation and has the corporate power and authority to own its properties and to transact the business in which it is engaged.

(h) Such Pledgor has the requisite power and authority and, if an individual, full legal right and capacity, to execute and deliver, and to perform its obligations under, this Agreement, and has taken all necessary action to authorize the execution, delivery and performance of this Agreement. Such Pledgor, if an individual living in a community property state, has obtained all consents, approvals or authorizations required under applicable laws relating to the transfer of community property to execute, deliver and perform its obligations under this Agreement; a true, correct and complete copy of all such consents, approvals or authorizations is attached as a Schedule to the Representations Agreement.

(i) This Agreement constitutes the legal, valid and binding obligation of such Pledgor, enforceable in accordance with its terms.

(j) The execution, delivery and performance of this Agreement will not violate (as applicable) any law or regulation, or any order or decree of any court or governmental instrumentality, or any provision of the charter or by- laws of, or any securities issued by, such Pledgor, and will not conflict with, or result in the breach of, or constitute a default under, any indenture, mortgage, deed of trust, agreement or other instrument to which such Pledgor is a party or by which it is bound, and will not result in the creation or imposition of any lien, charge or encumbrance upon any of the property of such Pledgor pursuant to the provisions of any of the foregoing.

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(k) No consent of any other person (including, without limitation, as applicable, stockholders and creditors of such Pledgor) and no consent, license, permit, approval or authorization of, exemption by, notice or report to, or registration, filing or declaration with, any governmental instrumentality is required in connection with the execution, delivery, performance, validity or enforceability of this Agreement, except for the filing of any financing statements required hereunder.

(l) The pledge of the Collateral pursuant to this Agreement creates a valid and perfected first priority security interest in such Collateral, subject to any filings or actions required pursuant to the California Uniform Commercial Code or otherwise.

(m) It will defend the Pledgee's security interest in the Collateral against the claims and demands of all persons whomsoever.

(n) It will take any and all actions necessary to maintain such Pledgor's status as a limited partner of the Operating Partnership and the limited liability represented by the Pledged Units.

(o) Such Pledgor will not enter into or assume any other agreement containing a negative pledge with respect to the Collateral.

5. Registration. At any time and from time to time the Pledgee may cause all or any of the Collateral to be transferred to or registered in its name or the name of its nominee or nominees.

6. Claims; Value of Collateral.

(a) Subject to Section 6 of the Representations Agreement, on or prior to the date on which the Survival Period terminates, a Covered Party may give notice (a "Claim Notice") to one or more of the Pledgors of any Claim it may have against the Pledgor(s), or any claim against the Covered Party which it reasonably believes may result in a Claim against the Pledgor(s) under Section 4 of the Representations Agreement, specifying in reasonable detail the nature and dollar amount of any such Claim. A Pledgor shall be deemed to have accepted a Claim if it does not give a Response Notice (as hereinafter defined) with respect thereto within 30 days following receipt of the Claim Notice. In the event that any Pledgor objects to any Claim and provides a written response (a "Response Notice") to such Covered Party within 30 days following receipt of the Claim Notice, which Response Notice describes in reasonable detail such Pledgor's objection to the Claim (whether as to the facts giving rise thereto, the amount thereof, or otherwise) and, if applicable, providing a recalculation of the amount thereof, such Covered Party and such Pledgor shall meet within ten days of the Covered Party's receipt of the Response Notice to discuss and negotiate in good faith the Claim and such Pledgor's objection thereto. In the event that such meeting is not held or, if held, no resolution or compromise is reached within 30 days of such meeting, then at the election of either such Covered Party or such Pledgor the dispute regarding the Claim shall be submitted to and determined by the U.S. District Court for the Southern District of California or, if such court does not have

5

jurisdiction over such dispute, such dispute shall be submitted to and determined by the Circuit Court of Los Angeles County, California. A Claim is successful and is deemed to be a Secured Obligation on the earliest to occur of:
(i) the date on which the relevant Pledgor(s) accepts such Claim pursuant to the second sentence of this paragraph (a) or otherwise; (ii) on the date the relevant Pledgor(s) and Covered Party agree on the amount of such Claim; or
(iii) 30 days after a final adjudication of the relevant Pledgor's or Pledgors' liability with respect to such Claim (which shall mean that all applicable appeals of any decision have been made or the time periods for filing such appeals have lapsed) in accordance with the procedures set forth above in this paragraph (a).

(b) The value of Collateral (the "Value") shall be determined as follows: (i) with respect to Collateral consisting of the Pledged Units or other Partnership Interests, an amount equal to the fair market value of the number of shares of the REIT's common stock for which such Collateral is exchangeable; and
(ii) for all other Collateral, the fair market value of such Collateral as determined by the Independent Directors of the Pledgee. For purposes of clause
(i) of this Section 6(b), "fair market value" of a share of common stock of the REIT shall have the meaning assigned to such term in the Operating Partnership Agreement.

7. Voting Rights and Certain Payments Prior to Occurrence of Secured
Obligations and Other Events.

(a) Until Collateral may be applied to satisfy a Secured Obligation hereunder (such Collateral to consist only of Collateral delivered by a Pledgee liable for such Secured Obligation), each Pledgor shall be entitled to exercise, as it shall think fit, but in a manner in the judgment of the Pledgee not inconsistent with the terms hereof, the voting power with respect to any such Collateral, and for that purpose the Pledgee shall (if such Collateral shall be registered in the name of the Pledgee or its nominee) execute or cause to be executed from time to time, at the expense of such Pledgor, such proxies or other instruments in favor of such Pledgor or its nominee, in such form and for such purposes as shall be reasonably required by such Pledgor and, if such Pledgor is an entity, shall be specified in a written request therefor of its President or a Vice-President, to enable it to exercise such voting power with respect to such Collateral.

(b) Until the Independent Directors of the Pledgee reasonably determine that the outstanding Claims asserted by the Covered Parties in one or more Claim Notices may equal or exceed the value of the Collateral then available to satisfy such Claims, each Pledgor shall be entitled to receive and retain for its own account any and all regular cash distributions (but not distributions in the form of Partnership Interests or other securities or liquidating distributions) and interest at any time and from time to time paid upon any of such Collateral.

(c) Notwithstanding anything contained in this Agreement to the contrary, except with the prior consent of the Pledgee, until such time as this Agreement is terminated, no Pledgor shall have the right to exercise any of its redemption rights under Section 8.6 of the Operating Partnership Agreement.

6

8. Extraordinary Payments and Distributions. In case, upon the dissolution or liquidation (in whole or in part) of the Operating Partnership, any sum shall be paid as a liquidating distribution or otherwise upon or with respect to any of the Collateral, such sum shall be paid over to the Pledgee promptly, and in any event within ten days after receipt thereof, to be held by the Pledgee as additional Collateral hereunder. In case any distribution of Partnership Interests shall be made with respect to the Collateral, or Partnership Interests or fractions thereof shall be issued pursuant to any split involving any of the Collateral, or any distribution of capital shall be made on any of the Collateral, or any partnership interests, shares, obligations or other property shall be distributed upon or with respect to the Collateral pursuant to a recapitalization or reclassification of the capital of the Operating Partnership, or pursuant to the dissolution, liquidation (in whole or in part), bankruptcy or reorganization of the Operating Partnership, or pursuant to the merger or consolidation of the Operating Partnership with or into another entity, the partnership interests, shares, obligations or other property so distributed shall be delivered to the Pledgee promptly, and in any event within ten days after receipt thereof, to be held by the Pledgee as additional Collateral hereunder, and all of the same (other than cash) shall constitute Collateral for all purposes hereof.

9. Voting Rights and Certain Payments After Occurrence of Secured
Obligation and Certain Other Events. (a) At such time that Collateral may be applied to satisfy a Secured Obligation hereunder, all rights of any Pledgor to exercise or refrain from exercising all voting power with respect to such Collateral and to otherwise exercise all ownership rights arising from such Collateral shall cease, and thereupon the Pledgee shall be entitled to exercise all voting power with respect to such Collateral and otherwise exercise such ownership rights as though the Pledgee were the outright owner of such Collateral. In the event that the Independent Directors of the Pledgee reasonably determine that the outstanding Claims asserted by the Covered Parties in one or more Claim Notices may equal or exceed the value of the Collateral then available to satisfy such Claims, all rights of any Pledgor to receive and retain the distributions and interest which it would otherwise be authorized to receive and retain pursuant to Section 7 hereof shall cease, and thereupon the Pledgee shall be entitled to receive and retain, as additional Collateral hereunder, any and all distributions and interest at any time and from time to time paid upon any of such Collateral, provided that, concurrent with making such determination, the Pledgee gives notice thereof to the affected Pledgor(s). Upon receipt of any such notice, a Pledgor may submit the matter to arbitration in accordance with the rules of the American Arbitration Association before a tribunal in Los Angeles, California, and the decision of the arbitrators as to the retention of any such distributions and interest shall be final and binding between the parties and shall be enforceable in any court of competent jurisdiction.

(b) All payments, distributions or other property or assets which are received by any Pledgor contrary to the provisions of paragraph (a) of this
Section 9 shall be received and held in trust for the benefit of the Pledgee, shall be segregated from other funds of such Pledgor and shall be forthwith paid over to the Pledgee.

10. Application of Cash Collateral. Any cash received and retained by the Pledgee as additional Collateral hereunder pursuant to the foregoing provisions may at any

7

time and from time to time be applied (in whole or in part) by the Pledgee, at its option, to the payment of the Secured Obligations to which such Collateral is subject (in such order as the Pledgee shall in its sole discretion determine).

11. Remedies With Respect to the Collateral.

(a) At such time that a Claim becomes a Secured Obligation, the Pledgee, without obligation to resort to other security, shall have the right at any time and from time to time to cause the Operating Partnership to redeem, sell, resell, assign and deliver, in its discretion, all or any part of Collateral with a Value equal to the amount of the Secured Obligation (such Collateral to consist of Collateral delivered by a Pledgor which is liable for such Secured Obligation), in one or more parcels at the same or different times, and all right, title and interest, claim and demand therein and right of redemption thereof, at any public or private sale, for cash, upon credit or for future delivery, and in connection therewith the Pledgee may grant options. Each such purchaser at any such sale shall hold the property sold absolutely free from any claim or right on the part of any Pledgor, and each Pledgor hereby waives (to the extent permitted by law) all rights of redemption, stay and appraisal which such Pledgor now has or may at any time in the future have under any rule of law or statute now existing or hereafter enacted. If any part of the Collateral is sold by the Pledgee upon credit or for future delivery, the Pledgee shall not be liable for the failure of the purchaser to purchase or pay for the same and, in the event of any such failure, the Pledgee may resell the Collateral. In no event shall a Pledgor be credited with any part of the proceeds of sale of any Collateral until cash payment thereof has actually been received by the Pledgee.

(b) No demand, advertisement or notice, all of which are hereby expressly waived, shall be required in connection with (i) any redemption by the Operating Partnership of any Collateral in accordance with the Operating Partnership Agreement or (ii) any sale or other disposition of any part of the Collateral which threatens to decline speedily in value or which is of a type customarily sold on a recognized market. Except as set forth in the preceding sentence, the Pledgee shall give the Pledgors at least ten days' prior notice of the time and place of any public sale and of the time after which any private sale or other disposition is to be made, which notice the Pledgors agree is reasonable, all other demands, advertisements and notices being hereby waived. The Pledgee shall not be obligated to make any sale of Collateral if it shall determine not to do so, regardless of the fact that notice of sale may have been given. The Pledgee may, without notice or publication, adjourn any public or private sale or cause the same to be adjourned from time to time by announcement at the time and place fixed for sale, and such sale may, without further notice, be made at the time and place to which the same was so adjourned. Upon each private sale of Collateral of a type customarily sold in a recognized market and upon each public sale, the REIT, the Operating Partnership or any other Covered Party may purchase all or any of the Collateral being sold, free from any equity or right of redemption, which is hereby waived and released, and may make payment therefor by release or discharge of the Secured Obligations in lieu of cash payment, and may, upon compliance with the terms of sale, hold, retain and dispose of such Collateral without further accountability therefor. In the case of all sales of Collateral, public or private, the

8

Pledgee may deduct from the proceeds of sale all costs and expenses of every kind for sale or delivery, including brokers' and attorneys' fees, and the Pledgee shall apply any balance of the proceeds of sale to the payment of the Secured Obligations. Recourse against the Pledgors is limited to the rights of the Pledgors in the Collateral and the Pledgors shall not be liable for any deficiency in the proceeds of sale of the Collateral to the payment of the Secured Obligations. If any proceeds of sale remain after payment in full of such costs and expenses and all of the Secured Obligations, they shall be held by the Pledgee as additional Collateral hereunder, subject to any duty of the Pledgee imposed by law to the holder of any subordinate security interest in the Collateral known to the Pledgee.

(c) For purposes of this Section 11, an agreement to sell all or any part of the Collateral shall be treated as a sale thereof and the Pledgee shall be free to carry out such sale pursuant to such agreement, and no Pledgor shall be entitled to the return of any of the same subject thereto, notwithstanding that after the Pledgee shall have entered into such an agreement, all Secured Obligations may have been paid and performed in full.

(d) Each Pledgor recognizes that the Pledgee may be unable to effect a public sale of all or a part of the Collateral by reason of certain prohibitions contained in the Securities Act of 1933, as amended, as now or hereafter in effect, or in applicable Blue Sky or other state securities laws, as now or hereafter in effect, but may be compelled to resort to one or more private sales to a restricted group of purchasers who will be obliged to agree, among other things, to acquire such Collateral for their own account, for investment and not with a view to the distribution or resale thereof. Each Pledgor agrees that private sales so made may be at prices and other terms less favorable to the seller than if such Collateral were sold at public sales, and that the Pledgee has no obligation to delay sale of any such Collateral for the period of time necessary to permit the issuer of such Collateral, even if such issuer would agree, to register such Collateral for public sale under such applicable securities laws. Each Pledgor agrees that private sales made under the foregoing circumstances shall be deemed to have been made in a commercially reasonable manner.

(e) The remedies provided herein in favor of the Pledgee shall not be deemed exclusive, but shall be cumulative, and shall be in addition to all other remedies in favor of the Pledgee existing at law or in equity.

(f) The Pledgee shall not have any duty to exercise any of the rights, privileges, options or powers or to sell or otherwise realize upon any of the Collateral, as herein authorized, and the Pledgee shall not be responsible for any failure to do so or delay in so doing.

12. Care of Collateral. The Pledgee shall have no duty as to the collection or protection of the Collateral or any income thereon or as to the preservation of any rights pertaining thereto, beyond the safe custody of any thereof actually in its possession. With respect to any maturities, calls, conversions, exchanges, redemptions, offers, tenders or similar matters relating to any of the Collateral (herein called "events"), the Pledgee's duty shall be fully satisfied if (i) the Pledgee exercises reasonable care to

9

ascertain the occurrence and to give reasonable notice to the Pledgors of any events applicable to any Collateral which are registered and held in the name of the Pledgee or its nominee, (ii) the Pledgee gives the Pledgors reasonable notice of the occurrence of any events, of which the Pledgee has received actual knowledge, as to any securities which are in bearer form or are not registered and held in the name of the Pledgee or its nominee (the Pledgors agreeing to give the Pledgee reasonable notice of the occurrence of any events applicable to any securities in the possession of the Pledgee of which the Pledgors have received knowledge), and (iii) (a) the Pledgee endeavors to take such action with respect to any of the events as the Pledgors may reasonably and specifically request in writing in sufficient time for such action to be evaluated and taken or (b) if the Pledgee determines that the action requested might adversely affect the value of the Collateral, the collection of the Secured Obligations, or otherwise prejudice the interests of the Pledgee, the Pledgee gives reasonable notice to the Pledgors that any such requested action will not be taken and if the Pledgee makes such determination or if any Pledgor fails to make such timely request, the Pledgee takes such other action as it deems advisable in the circumstances. Except as hereinabove specifically set forth, the Pledgee shall have no further obligation to ascertain the occurrence of, or to notify the Pledgors with respect to, any events and shall not be deemed to assume any such further obligation as a result of the establishment by the Pledgee of any internal procedures with respect to any securities in its possession. Except for any claims, causes of action or demands arising out of the Pledgee's failure to perform its agreements set forth in this Section, the Pledgors release the Pledgee from any claims, causes of action and demands at any time arising out of or with respect to this Agreement, the Collateral and/or any actions taken or omitted to be taken by the Pledgee with respect thereto, and the Pledgors hereby agree to hold the Pledgee harmless from and with respect to any and all such claims, causes of action and demands.

13. Power of Attorney. Each Pledgor hereby appoints the Pledgee as such Pledgor's attorney-in-fact for the purpose of carrying out the provisions of this Agreement and taking any action and executing any instrument which the Pledgee may deem necessary or advisable to accomplish the purposes hereof. Without limiting the generality of the foregoing, the Pledgee shall have the right and power to (a) receive, endorse and collect all checks and other orders for the payment of money made payable to a Pledgor representing any interest or other distribution payable in respect of the Collateral or any part thereof and to give full discharge for the same, and (b) to execute endorsements, assignments or other instruments of conveyance or transfer with respect to all or any of the Collateral.

14. Further Assurances. The Pledgors shall, at their sole cost and expense, upon request of the Pledgee, duly execute and deliver, or cause to be duly executed and delivered, to the Pledgee such further instruments and documents and take and cause to be taken such further actions as may be necessary or proper in the reasonable opinion of the Pledgee to carry out more effectually the provisions and purposes of this Agreement.

15. No Waiver. No failure on the part of the Pledgee to exercise, and no delay on the part of the Pledgee or of any Covered Party in exercising, any of its options, powers, rights or remedies hereunder, or partial or single exercise thereof, shall constitute a

10

waiver thereof or preclude any other or further exercise thereof or the exercise of any other option, power, right or remedy.

16. Security Interest Absolute. All rights of the Pledgee hereunder, grant of a security interest in the Collateral and all obligations of the Pledgors hereunder, shall be absolute and unconditional irrespective of (a) any lack of validity or enforceability of the Representations Agreement, any of the Secured Obligations or any Grantor Agreement or any other agreement or instrument relating thereto or relating to the Transactions, (b) any change in any term of all or any of the Secured Obligations or any other amendment or waiver of, or any consent to any departure from, the Representations Agreement, any Grantor Agreement or any other agreement or instrument or (c) any other circumstance which might otherwise constitute a defense available to, or a discharge of, any Pledgor in respect of the Secured Obligations or in respect of this Agreement.

17. Return of Collateral. Upon the termination of the Survival Period, the Pledgors shall be entitled to the return of all of the Collateral and all other cash held as additional Collateral hereunder which have not been used or applied toward the payment of the Secured Obligations, unless Claims asserted in one or more Claim Notices pursuant to Section 6(a) hereof remain outstanding, in which case Collateral with a Value equal to the aggregate dollar amount of such Claims shall be retained by the Pledgee pursuant to the terms hereof pending resolution of such Claims pursuant to Section 6 hereof (such retained Collateral to consist of Collateral delivered by any Pledgor which may be liable for such Claims (or, if more than one Pledgor may be liable as to any Claim, then in proportion to such Pledgors' potential liability so long as the Pledgee holds sufficient Collateral of each such Pledgor, and otherwise in any proportion). The assignment by the Pledgee to the Pledgors of such Collateral shall be without representation or warranty of any nature whatsoever and wholly without recourse. Notwithstanding the foregoing, the Pledgors' release of the Pledgee and agreement to hold the Pledgee harmless set forth in the last sentence of Section 12 hereof shall survive any return of Collateral or termination of this Agreement.

18. Notices. All notices and other communications to any party hereunder shall be in writing and shall be personally delivered or sent by certified mail, postage prepaid, return receipt requested, or by a reputable courier delivery service or by prepaid telex or telecopy and shall be given to the address or telex or telecopier number for such party set forth below such party's signature to this Agreement, or to such other address or telex or telecopier number as such party may hereafter specify by notice to the other party. Each such notice or other communica-tion shall be effective (a) if given by telex or telecopier, when such telex or telecopy is trans-mitted to the telex or telecopier number specified by this Section and the appropriate answerback or confirmation is received or (b) if given by any other means (including, without limitation, by courier), when delivered at the address specified by this Section.

19. Amendments and Waivers. No amendment or waiver of any provision of this Agreement shall in any event be effective unless the same shall be in writing and signed by the Pledgee and each Pledgor.

11

20. Governing Law. This Agreement and the rights and obligations of the Pledgee and the Pledgors hereunder shall be construed in accordance with and governed by the law of the State of California (without giving effect to the conflict of law principles thereof).

21. Submission to Jurisdiction.

(a) Any legal action or proceeding with respect to this Agreement may be brought in the courts of the State of California or of the United States of America located in California, and, by execution and delivery of this Agreement, each Pledgor hereby accepts for itself and in respect of its property, generally and unconditionally, the jurisdiction of the aforesaid courts. Each Pledgor hereby irrevocably waives, in connection with any such action or proceeding, (i) trial by jury, (ii) any objection, including, without limitation, any objection to the laying of venue or based on the grounds of forum non conveniens, which it may now or hereafter have to the bringing of any such action or proceeding in such respective jurisdictions and (iii) the right to interpose any setoff, counterclaim or cross-claim.

(b) Each Pledgor irrevocably consents to the service of process of any of the aforementioned courts in any such action or proceeding by the mailing of copies thereof by certified mail, postage prepaid, to such Pledgor at its address determined pursuant to Section 18 hereof.

(c) Nothing herein shall affect the right of the Pledgee to serve process in any other manner permitted by law or to commence legal proceedings or otherwise proceed against the Pledgor in any other jurisdiction.

22. Assignment. Except with respect to any assignment by the Pledgee to the Operating Partnership or to any permitted assignee of the REIT or the Operating Partnership under the Representations Agreement or other Covered Party (which shall not require any Pledgor's consent but as to which the Pledgee will give notice to the Pledgors), none of the Pledgors or Pledgee may assign any of their respective rights under and interests in this Agreement without the prior written consent of the Pledgors (if the assignor is the Pledgee) or of the Pledgee (if the assignor is any Pledgor), which consent shall not be unreasonably withheld or delayed; provided, however, that no consent of any of the Pledgors is required hereunder for (a) the assignment by the Operating Partnership or the REIT of any of its rights under and interests in the Representations Agreement to any permitted assignee under the Representations Agreement or (b) the Pledgee to act hereunder as agent on behalf of any person who becomes a Covered Party. Upon receipt of such consent (if required under this Section 22), the Pledgee may deliver the Collateral or any portion thereof to its assignee who shall thereupon, to the extent provided in the instrument of assignment, have all of the rights of the Pledgee hereunder with respect to the Collateral, and the Pledgee shall thereafter be fully discharged from any responsibility with respect to the Collateral so delivered to such assignee. However, no such assignment shall relieve such assignee of those duties and obligations of the Pledgee specified hereunder.

12

23. Benefit of Agreement. This Agreement shall be binding upon and inure to the benefit of the Pledgors and the Pledgee and their respective heirs, successors and permitted assigns, and all subsequent holders of the Secured Obligations.

24. Counterparts. This Agreement may be executed in any number of counterparts and by the different parties hereto on separate counterparts, each of which when so executed and delivered shall be an original and all of which shall together constitute one and the same agreement.

25. Captions. The captions of the sections of this Agreement have been inserted for convenience only and shall not in any way affect the meaning or construction of any provision of this Agreement.

26. Complete Agreement. This Agreement and the Representations Agreement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede all other understandings, oral or written, with respect to the subject matter hereof.

27. Severability. In case any one or more of the provisions contained in this Agreement should be invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions contained herein shall not in any way be affected or impaired.

13

IN WITNESS WHEREOF, the Pledgors have duly executed this Agreement, and the Pledgee has caused this Agreement to be duly executed by its officers duly authorized, as of the day and year first above written.

PLEDGORS:                              KILROY INDUSTRIES



                                       By:________________________________
                                          Name:
                                          Title:

                                       Address:
                                       2250 East Imperial Highway
                                       El Segundo, California  90245
                                       Attn:______________________________
                                       Tel:  (    ) ____-_______
                                       Fax:  (   ) ____-_______
                                       Telex:  (    ) ____-_______


John B. Kilroy, Sr.

Address (residence):



Address (business):


[Kilroy Realty Corporation]
2250 East Imperial Highway
El Segundo, California 90245
Tel: ( ) ____-_______
Fax: ( ) ____-_______
Telex: ( ) ____-_______

14


John B. Kilroy, Sr.

Address (residence):



Address (business):


Kilroy Realty Corporation
2250 East Imperial Highway
El Segundo, California 90245
Tel: ( ) ____-_______
Fax: ( ) ____-_______
Telex: ( ) ____-_______

PLEDGEE:                               KILROY REALTY CORPORATION


                                       By:________________________________
                                          Name:
                                          Title:

                                       Address:
                                       2250 East Imperial Highway
                                       El Segundo, California  90245
                                       Attn:______________________________
                                       Tel:  (    ) ____-_______
                                       Fax:  (   ) ____-_______
                                       Telex:  (    ) ____-_______

15

SCHEDULE I

Description of Units

                                                                Percentage
        Name of         Certificate     Number   Percentage     of Pledgors
        Pledgor           Number       of Units  of Equity      Total Units
        -------         -----------    --------  ---------      -----------
Kilroy Industries                                                   50%
John B. Kilroy,                                                     50%
 Sr.
John B. Kilroy,                                                     50%
 Jr.


EXHIBIT 10.6

THE 1997 STOCK OPTION AND INCENTIVE PLAN

OF KILROY REALTY CORPORATION

KILROY REALTY, L.P.

AND KILROY SERVICES, INC.


TABLE OF CONTENTS

                                                                                      Page
                                                                                      ----

ARTICLE I

                                 DEFINITIONS.........................................    1
         1.1   General...............................................................    1
               -------
         1.2   Award Limit...........................................................    1
               -----------
         1.3   Beneficiary...........................................................    1
               -----------
         1.4   Board.................................................................    2
               -----
         1.5   Capital Stock.........................................................    2
               -------------
         1.6   Change in Control.....................................................    2
               -----------------
         1.7   Code..................................................................    2
               ----
         1.8   Committee.............................................................    2
               ---------
         1.9   Common Stock..........................................................    2
               ------------
         1.10  Company...............................................................    2
               -------
         1.11  Company Employee......................................................    2
               ----------------
         1.12  Company Subsidiary....................................................    3
               ------------------
         1.13  Corporate Transaction.................................................    3
               ---------------------
         1.14  Development Services Contract.........................................    3
               -----------------------------
         1.15  Director..............................................................    3
               --------
         1.16  Employee..............................................................    3
               --------
         1.17  Exchange Act..........................................................    3
               ------------
         1.18  Fair Market Value.....................................................    3
               -----------------
         1.19  General Partner Interest..............................................    4
               ------------------------
         1.20  Grantee...............................................................    4
               -------
         1.21  Incentive Stock Option................................................    4
               ----------------------
         1.22  Independent Director..................................................    4
               --------------------
         1.23  Non-Employee Director.................................................    4
               ---------------------
         1.24  Non-Qualified Stock Option............................................    4
               --------------------------
         1.25  Option................................................................    4
               ------
         1.26  Optionee..............................................................    5
               --------
         1.27  Partnership...........................................................    5
               -----------
         1.28  Partnership Agreement.................................................    5
               ---------------------
         1.29  Partnership Employee..................................................    5
               --------------------
         1.30  Partnership Optionee Purchased Shares.................................    5
               -------------------------------------
         1.31  Partnership Purchase Price............................................    5
               --------------------------
         1.32  Partnership Purchased Shares..........................................    5
               ----------------------------
         1.33  Partnership Subsidiary................................................    5
               ----------------------
         1.34  Plan..................................................................    5
               ----
         1.35  QDRO..................................................................    5
               ----
         1.36  Restricted Stock......................................................    5
               ----------------
         1.37  Restricted Stockholder................................................    5
               ----------------------
         1.38  Rule 16b-3............................................................    5
               ----------
         1.39  Services Company......................................................    6
               ----------------

i

                                                                                      Page
                                                                                      ----

         1.40  Services Company Board................................................    6
               ----------------------
         1.41  Services Company Employee.............................................    6
               -------------------------
         1.42  Services Company Independent Director.................................    6
               -------------------------------------
         1.43  Services Company Optionee Purchased Shares............................    6
               ------------------------------------------
         1.44  Services Company Purchase Price.......................................    6
               -------------------------------
         1.45  Services Company Purchased Shares.....................................    6
               ---------------------------------
         1.46  Services Company Subsidiary...........................................    6
               ---------------------------
         1.47  Stock Appreciation Right..............................................    6
               ------------------------
         1.48  Stock Ownership Limit.................................................    6
               ---------------------
         1.49  Subsidiary............................................................    7
               ----------
         1.50  Termination of Consultancy............................................    7
               --------------------------
         1.51  Termination of Directorship...........................................    7
               ---------------------------
         1.52  Termination of Employment.............................................    7
               -------------------------

ARTICLE II

                            SHARES SUBJECT TO PLAN...................................    8
         2.1   Shares Subject to Plan................................................    8
               ----------------------
         2.2   Add-back of Options and Other Rights..................................    8
               ------------------------------------

ARTICLE III

                             GRANTING OF OPTIONS.....................................    9
         3.1   Eligibility...........................................................    9
               -----------
         3.2   Disqualification for Stock Ownership..................................    9
               ------------------------------------
         3.3   Qualification of Incentive Stock Options..............................    9
               ----------------------------------------
         3.4   Granting of Options...................................................    9
               -------------------

ARTICLE IV

                              TERMS OF OPTIONS.......................................   11
         4.1   Option Agreement......................................................   11
               ----------------
         4.2   Option Price..........................................................   11
               ------------
         4.3   Option Term...........................................................   11
               -----------
         4.4   Option Vesting........................................................   12
               --------------
         4.5   No Right to Continue as Employee or Consultant........................   12
               ----------------------------------------------
         4.6   Exercise of Option after Termination of Employment, Consultancy or
               ------------------------------------------------------------------
               Directorship..........................................................   13
               ------------
         4.7   Consideration.........................................................   14
               -------------

ARTICLE V

                             EXERCISE OF OPTIONS.....................................   14
         5.1   Partial Exercise......................................................   14
               ----------------

ii

                                                                                      Page
                                                                                      ----

         5.2   Manner of Exercise....................................................   14
               ------------------
         5.3   Transfer of Shares to a Company Employee, Independent Director or
               -----------------------------------------------------------------
               Other Board Member....................................................   15
               ------------------
         5.4   Transfer of Shares to a Partnership Employee..........................   16
               --------------------------------------------
         5.5   Transfer of Shares to a Services Company Employee, Services Company
               -------------------------------------------------------------------
               Independent Director or other Non-Employee Members of the Services
               ------------------------------------------------------------------
               Company Board.........................................................   16
               -------------
         5.6   Transfer of Payment to the Partnership................................   17
               --------------------------------------
         5.7   Conditions to Issuance of Stock Certificates..........................   17
               --------------------------------------------
         5.8   Rights as Stockholders................................................   18
               ----------------------
         5.9   Ownership and Transfer Restrictions...................................   18
               -----------------------------------
         5.10  Restrictions on Exercise of Option....................................   18
               ----------------------------------

ARTICLE VI

                          AWARD OF RESTRICTED STOCK..................................   19
         6.1   Award of Restricted Stock.............................................   19
               -------------------------
         6.2   Restricted Stock Agreement............................................   19
               --------------------------
         6.3   Consideration.........................................................   19
               -------------
         6.4   Rights as Stockholders................................................   20
               ----------------------
         6.5   Restriction...........................................................   20
               -----------
         6.6   Repurchase of Restricted Stock........................................   20
               ------------------------------
         6.7   Escrow................................................................   21
               ------
         6.8   Legend................................................................   21
               ------

ARTICLE VII

                          STOCK APPRECIATION RIGHTS..................................   21
         7.1   Grant of Stock Appreciation Rights....................................   21
               ----------------------------------
         7.2   Coupled Stock Appreciation Rights.....................................   22
               ---------------------------------
         7.3   Independent Stock Appreciation Rights.................................   22
               -------------------------------------
         7.4   Payment and Limitations on Exercise...................................   23
               -----------------------------------
         7.5   Consideration.........................................................   23
               -------------

ARTICLE VIII

                               ADMINISTRATION........................................   23
         8.1   Compensation Committee................................................   23
               ----------------------
         8.2   Duties and Powers of Committee........................................   24
               ------------------------------
         8.3   Majority Rule; Unanimous Written Consent..............................   24
               ----------------------------------------
         8.4   Compensation; Professional Assistance; Good Faith Actions.............   24
               ---------------------------------------------------------

ARTICLE IX

                          MISCELLANEOUS PROVISIONS...................................    25
         9.1   Not Transferable......................................................    25
               ----------------
         9.2   Amendment, Suspension or Termination of this Plan.....................    25
               -------------------------------------------------

iii

                                                                             Page
                                                                             ----

9.3   Changes in Common Stock or Assets of the Company, Acquisition
      -------------------------------------------------------------
      or Liquidation of the Company and Other Corporate Events..............   26
      --------------------------------------------------------
9.4   Approval of Plan by Stockholders......................................   28
      --------------------------------
9.5   Tax Withholding.......................................................   29
      ---------------
9.6   Loans.................................................................   29
      -----
9.7   Forfeiture Provisions.................................................   29
      ---------------------
9.8   Limitations Applicable to Section 16 Persons and Performance-Based
      ------------------------------------------------------------------
      Compensation..........................................................   29
      ------------
9.9   Effect of Plan Upon Options and Compensation Plans....................   30
      --------------------------------------------------
9.10  Section 83(b) Election Prohibited.....................................   30
      ---------------------------------
9.11  Compliance with Laws..................................................   30
      --------------------
9.12  Titles................................................................   30
      ------
9.13  Governing Law.........................................................   31
      -------------
9.14  Conflicts with Company's Restated Articles............................   31
      ------------------------------------------

iv

THE 1997 STOCK OPTION AND INCENTIVE PLAN
OF KILROY REALTY CORPORATION,
KILROY REALTY, L.P.
AND KILROY SERVICES, INC.

Kilroy Realty Corporation, a Maryland corporation (the "Company"), Kilroy Realty, L.P., a Delaware limited partnership (the "Partnership") and Kilroy Services, Inc., a Maryland corporation (the "Services Company"), have adopted The 1997 Stock Option and Incentive Plan of Kilroy Realty Corporation, Kilroy Realty, L.P. and Kilroy Services, Inc. (the "Plan"), effective January 31, 1997, for the benefit of their eligible employees, consultants and directors. The Plan consists of three plans, one for the benefit of the employees, consultants and directors of the Company, one for the benefit of the employees and consultants of the Partnership and one for the benefit of the employees, consultants and directors of the Services Company.

The purposes of this Plan are as follows:

(1) To provide an additional incentive for directors, key Employees and consultants to further the growth, development and financial success of the Company by personally benefiting through the ownership of Company stock and/or rights which recognize such growth, development and financial success.

(2) To enable the Company, the Partnership and the Services Company to obtain and retain the services of directors, key Employees and consultants considered essential to the long range success of the Company by offering them an opportunity to own stock in the Company and/or rights which will reflect the growth, development and financial success of the Company.

ARTICLE I

DEFINITIONS

1.1 General. Wherever the following terms are used in this Plan they shall have the meaning specified below, unless the context clearly indicates otherwise.

1.2 Award Limit. "Award Limit" shall mean, in any fiscal year of the Company, 300,000 shares of Common Stock.

1.3 Beneficiary. "Beneficiary" shall mean the person or persons properly designated by the Optionee, including his spouse or heirs at law, to exercise such Optionee's rights under this Plan in the event of the Optionee's death, or if the Optionee has not designated such person or persons, or such person or persons shall all have pre-deceased the Optionee, the executor or administrator of the Optionee's estate. Designation, revocation and redesignation of Beneficiaries must be made in writing in accordance with rules established by the Committee and shall be effective upon delivery to the Committee.

1.4 Board. "Board" shall mean the Board of Directors of the Company.

1.5 Capital Stock. "Capital Stock" shall mean all classes or series of stock of the Company.

1.6 Change in Control. "Change in Control" shall mean a change in ownership or control of the Company effected through either of the following transactions:

(a) any person or related group of persons (other than the Company or a person that directly or indirectly controls, is controlled by, or is under common control with, the Company) directly or indirectly acquires beneficial ownership (within the meaning of Rule 13d-3 under the Exchange Act) of securities possessing more than fifty percent (50%) of the total combined voting power of the Company's outstanding securities pursuant to a tender or exchange offer made directly to the Company's stockholders which the Board does not recommend such stockholders to accept; or

(b) there is a change in the composition of the Board over a period of thirty-six (36) consecutive months (or less) such that a majority of the Board members (rounded up to the nearest whole number) ceases, by reason of one or more proxy contests for the election of Board members, to be comprised of individuals who either (i) have been Board members continuously since the beginning of such period or (ii) have been elected or nominated for election as Board members during such period by at least a majority of the Board members described in clause (i) who were still in office at the time such election or nomination was approved by the Board.

1.7 Code. "Code" shall mean the Internal Revenue Code of 1986, as

amended.

1.8 Committee. "Committee" shall mean the Executive Compensation Committee of the Board, or another committee, or a subcommittee of the Board, appointed as provided in Section 8.1.

1.9 Common Stock. "Common Stock" shall mean the common stock of the Company, par value $.01 per share, and any equity security of the Company issued or authorized to be issued in the future, but excluding any preferred stock and any warrants, options or other rights to purchase Common Stock. Debt securities of the Company convertible into Common Stock shall be deemed equity securities of the Company.

1.10 Company. "Company" shall mean Kilroy Realty Corporation, a Maryland corporation.

1.11 Company Employee. "Company Employee" shall mean any officer or other employee (as defined in accordance with Section 3401(c) of the Code) of the Company, or of any corporation which is then a Company Subsidiary.

2

1.12 Company Subsidiary. "Company Subsidiary" shall mean any corporation in an unbroken chain of corporations beginning with the Company if each of the corporations other than the last corporation in the unbroken chain then owns stock possessing 50 percent or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. Except with respect to Incentive Stock Options, "Company Subsidiary" shall also mean any partnership in which the Company and/or any Company Subsidiary owns more than 50 percent of the capital or profits interests; provided, however, that "Company Subsidiary" shall not include the Partnership nor any Partnership Subsidiary; and provided further, that "Company Subsidiary" shall not include Kilroy Realty Finance, Inc. or Kilroy Realty Finance, L.P. or any of their respective subsidiaries.

1.13 Corporate Transaction. "Corporate Transaction" shall mean any of the following stockholder-approved transactions to which the Company is a party:

(a) a merger or consolidation in which the Company is not the surviving entity, except for a transaction the principal purpose of which is to change the State in which the Company is incorporated, form a holding company or effect a similar reorganization as to form whereupon this Plan and all Options are assumed by the successor entity;

(b) the sale, transfer, exchange or other disposition of all or substantially all of the assets of the Company, in complete liquidation or dissolution of the Company in a transaction not covered by the exceptions to clause (a), above; or

(c) any reverse merger in which the Company is the surviving entity but in which securities possessing more than fifty percent (50%) of the total combined voting power of the Company's outstanding securities are transferred to a person or persons different from those who held such securities immediately prior to such merger.

1.14 Development Services Contract. "Development Services Contract" shall mean the agreement between the Partnership and the Services Company, pursuant to which the Services Company will provide development services to the Partnership.

1.15 Director. "Director" shall mean an Independent Director, a Service Company Director or a Non-Employee Director.

1.16 Employee. "Employee" shall mean any Company Employee, Partnership Employee or Services Company Employee.

1.17 Exchange Act. "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended.

1.18 Fair Market Value. "Fair Market Value" of a share of Common Stock as of a given date shall be (i) the closing price of a share of Common Stock on the principal exchange on which shares of Common Stock are then trading, if any (or as reported on any

3

composite index which includes such principal exchange), on the trading day previous to such date, or if shares were not traded on the trading day previous to such date, then on the next preceding date on which a trade occurred, or (ii) if Common Stock is not traded on an exchange but is quoted on NASDAQ or a successor quotation system, the mean between the closing representative bid and asked prices for the Common Stock on the trading day previous to such date as reported by NASDAQ or such successor quotation system; or (iii) if Common Stock is not publicly traded on an exchange and not quoted on NASDAQ or a successor quotation system, the Fair Market Value of a share of Common Stock as established by the Committee (or the Board, in the case of Options granted to Independent Directors) acting in good faith. Notwithstanding anything to the contrary herein, the Fair Market Value at the time of grant of a share of Common Stock underlying an option grant or other award made under this Plan and in connection with the initial public offering of the Company shall be the initial offering price per share.

1.19 General Partner Interest. "General Partner Interest" shall mean an ownership interest in the Partnership that is a general partner interest and includes any and all benefits to which the holder of such an interest may be entitled as provided in the Partnership Agreement, together with all obligations of such holder to comply with the terms and provisions of such agreement.

1.20 Grantee. "Grantee" shall mean an Employee or consultant granted a Stock Appreciation Right under this Plan.

1.21 Incentive Stock Option. "Incentive Stock Option" shall mean an option which conforms to the applicable provisions of Section 422 of the Code and which is designated as an Incentive Stock Option by the Committee.

1.22 Independent Director. "Independent Director" shall mean a member of the Board who is not an employee, officer or affiliate of the Company or Kilroy Industries or a subsidiary or division thereof, or a relative of a principal executive officer, and who is not an individual member of an organization acting as an advisor, consultant or legal counsel receiving compensation on a continuing basis from the Company in addition to director's fees.

1.23 Non-Employee Director. "Non-Employee Director" shall mean a member of the Board or the Services Company Board who is not an Independent Director, a Services Company Independent Director or an Employee.

1.24 Non-Qualified Stock Option. "Non-Qualified Stock Option" shall mean an Option which is not designated as an Incentive Stock Option by the Committee.

1.25 Option. "Option" shall mean a stock option granted under Article III of this Plan. An Option granted under this Plan shall, as determined by the Committee, be either a Non-Qualified Stock Option or an Incentive Stock Option; provided, however, that Options granted to anyone other than Company Employees shall be Non-Qualified Stock Options.

4

1.26 Optionee. "Optionee" shall mean an Employee, Director or consultant granted an Option under this Plan.

1.27 Partnership. "Partnership" shall mean Kilroy Realty, L.P., a Delaware limited partnership.

1.28 Partnership Agreement. "Partnership Agreement" shall mean the amended and restated agreement of limited partnership of the Partnership, as the same may be amended, modified or restated from time to time.

1.29 Partnership Employee. "Partnership Employee" shall mean any officer, other employee (as defined in accordance with Section 3401(c) of the Code) of the Partnership, or any entity which is then a Partnership Subsidiary.

1.30 Partnership Optionee Purchased Shares. "Partnership Optionee Purchased Shares" shall have the meaning set forth in Section 5.4.

1.31 Partnership Purchase Price. "Partnership Purchase Price" shall have the meaning set forth in Section 5.4.

1.32 Partnership Purchased Shares. "Partnership Purchased Shares" shall have the meaning set forth in Section 5.4.

1.33 Partnership Subsidiary. "Partnership Subsidiary" shall mean any partnership in an unbroken chain of partnerships beginning with the Partnership if each of the partnerships other than the last partnership in the unbroken chain then owns more than 50 percent of the capital or profits interests in one of the other partnerships. "Partnership Subsidiary" shall also mean any corporation in which the Partnership and/or any Partnership Subsidiary owns stock possessing 50 percent or more of the total combined voting power of all classes of stock.

1.34 Plan. "Plan" shall mean The 1997 Stock Option and Incentive Plan

of Kilroy Realty Corporation and Kilroy Realty, L.P.

1.35 QDRO. "QDRO" shall mean a qualified domestic relations order as

defined by the Code or Title I of the Employee Retirement Income Security Act of 1974, as amended, or the rules thereunder.

1.36 Restricted Stock. "Restricted Stock" shall mean Common Stock awarded under Article VI of this Plan.

1.37 Restricted Stockholder. "Restricted Stockholder" shall mean an Employee or consultant granted an award of Restricted Stock under Article VI of this Plan.

1.38 Rule 16b-3. "Rule 16b-3" shall mean that certain Rule 16b-3 under the Exchange Act, as such Rule may be amended from time to time.

5

1.39 Services Company. "Services Company" shall mean Kilroy Services, Inc., a Maryland corporation.

1.40 Services Company Board. "Services Company Board" shall mean the board of directors of the Services Company.

1.41 Services Company Employee. "Services Company Employee" shall mean any officer or other employee (as defined in accordance with Section 3401(c) of the Code) of the Services Company, or of any corporation which is then a Services Company Subsidiary.

1.42 Services Company Independent Director. "Services Company Independent Director" shall mean a member of the Services Company Board who is not (a) an employee, officer or affiliate of the Company, the Partnership, the Services Company or Kilroy Industries or a subsidiary or division of any of the foregoing, or a relative of a principal executive officer, and who is not an individual member of an organization acting as an advisor, consultant or legal counsel receiving compensation on a continuing basis from the Company, the Partnership or the Services Company in addition to director's fees or (b) an Independent Director.

1.43 Services Company Optionee Purchased Shares. "Services Company Optionee Purchased Shares" shall have the meaning set forth in Section 5.5.

1.44 Services Company Purchase Price. "Services Company Purchase Price" shall have the meaning set forth in Section 5.5.

1.45 Services Company Purchased Shares. "Services Company Purchased Shares" shall have the meaning set forth in Section 5.5.

1.46 Services Company Subsidiary. "Services Company Subsidiary" shall mean any corporation in an unbroken chain of corporations beginning with the Services Company if each of the corporations other than the last corporation in the unbroken chain then owns stock possessing 50 percent or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. "Services Company Subsidiary" shall also mean any partnership in which the Company and/or any Company Subsidiary owns more than 50 percent of the capital or profits interests.

1.47 Stock Appreciation Right. "Stock Appreciation Right" shall mean a stock appreciation right granted under Article VII of this Plan.

1.48 Stock Ownership Limit. "Stock Ownership Limit" shall mean (i) the restrictions on ownership and transfer of Common Stock provided in Article IV of the Company's Articles of Amendment and Restatement (the "Restated Articles"); and (ii) any other restrictions on ownership or transfer set forth in the Restated Articles.

6

1.49 Subsidiary. "Subsidiary" shall mean any Company Subsidiary or Partnership Subsidiary.

1.50 Termination of Consultancy. "Termination of Consultancy" shall mean the time when the engagement of an Optionee, Grantee or Restricted Stockholder as a consultant to the Company, a Company Subsidiary, the Partnership, a Partnership Subsidiary, the Services Company or a Services Company Subsidiary is terminated for any reason, with or without cause, including, but not by way of limitation, by resignation, discharge, death or retirement; but excluding, at the discretion of the Committee, terminations where there is a simultaneous commencement of employment or directorship or continuing consultancy with the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary. The Committee, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of Consultancy, including, but not by way of limitation, the question of whether a Termination of Consultancy resulted from a discharge for good cause, and all questions of whether particular leaves of absence constitute Terminations of Consultancy. Notwithstanding any other provision of this Plan, the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary has an absolute and unrestricted right to terminate a consultant's service at any time for any reason whatsoever, with or without cause, except to the extent expressly provided otherwise in writing.

1.51 Termination of Directorship. "Termination of Directorship" shall mean the time when an Optionee who is a Director ceases to be a Director for any reason, including, but not by way of limitation, a termination by resignation, failure to be elected, death or retirement; but excluding, at the discretion of the Committee, (i) terminations where there is a simultaneous reemployment or continuing employment of an Optionee, Grantee or Restricted Stockholder by the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary
(ii) terminations which are followed by the simultaneous establishment of a directorship with the Company, a Company Subsidiary, the Partnership, a Partnership Subsidiary, the Services Company or a Services Company Subsidiary.

1.52 Termination of Employment. "Termination of Employment" shall mean the time when the employee-employer relationship between an Optionee, Grantee or Restricted Stockholder and the Company, a Company Subsidiary, the Partnership, a Partnership Subsidiary, the Services Company or a Services Company Subsidiary is terminated for any reason, with or without cause, including, but not by way of limitation, a termination by resignation, discharge, death, disability or retirement; but excluding, at the discretion of the Committee, (i) terminations where there is a simultaneous reemployment or continuing employment of an Optionee, Grantee or Restricted Stockholder by the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary, (ii) terminations which result in a temporary severance of the employee-employer relationship, and (iii) terminations which are followed by the simultaneous establishment of a consulting relationship or directorship with the Company, a Company Subsidiary, the Partnership, a Partnership Subsidiary, the Services Company or a

7

Services Company Subsidiary. The Committee, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of Employment, including, but not by way of limitation, the question of whether a Termination of Employment resulted from a discharge for good cause, and all questions of whether particular leaves of absence constitute Terminations of Employment; provided, however, that, with respect to Incentive Stock Options, a leave of absence, change in status from an employee to an independent contractor or other change in the employee-employer relationship shall constitute a Termination of Employment if, and to the extent that, such leave of absence, change in status or other change interrupts employment for the purposes of
Section 422(a)(2) of the Code and the then applicable regulations and revenue rulings under said Section. Notwithstanding any other provision of this Plan, the Company, any Company Subsidiary, the Partnership or any Partnership Subsidiary has an absolute and unrestricted right to terminate an Employee's employment at any time for any reason whatsoever, with or without cause, except to the extent expressly provided otherwise in writing.

ARTICLE II

SHARES SUBJECT TO PLAN

2.1 Shares Subject to Plan.

(a) The shares of stock subject to Options, awards of Restricted Stock or Stock Appreciation Rights shall be shares of the Company's Common Stock, par value $.01 per share. The aggregate number of such shares which may be issued upon exercise of such options or rights or upon any such awards under the Plan shall not exceed one million four hundred and sixty thousand (1,460,000). The shares of Common Stock issuable upon exercise of such options or rights or upon any such awards may be either previously authorized but unissued shares or treasury shares.

(b) The maximum number of shares which may be subject to options or Stock Appreciation Rights granted under the Plan to any individual in any fiscal year shall not exceed the Award Limit. To the extent required by Section 162(m) of the Code, shares subject to Options which are canceled continue to be counted against the Award Limit and if, after grant of an Option, the price of shares subject to such Option is reduced, the transaction is treated as a cancellation of the Option and a grant of a new Option and both the Option deemed to be canceled and the Option deemed to be granted are counted against the Award Limit. Furthermore, to the extent required by Section 162(m) of the Code, if, after grant of a Stock Appreciation Right, the base amount on which stock appreciation is calculated is reduced to reflect a reduction in the Fair Market Value of the Company's Common Stock, the transaction is treated as a cancellation of the Stock Appreciation Right and a grant of a new Stock Appreciation Right and both the Stock Appreciation Right deemed to be canceled and the Stock Appreciation Right deemed to be granted are counted against the Award Limit.

2.2 Add-back of Options and Other Rights. If any Option, or other right to acquire shares of Common Stock under any other award under this Plan, expires or is canceled without having been fully exercised, the number of shares subject to such Option or

8

other right but as to which such Option or other right was not exercised prior to its expiration or cancellation may again be optioned, granted or awarded hereunder, subject to the limitations of Section 2.1. Any shares subject to Options or other awards which are adjusted pursuant to Section 9.3 and become exercisable with respect to shares of stock of another corporation shall be considered cancelled and may again be optioned, granted or awarded hereunder. If any share of Restricted Stock is forfeited by the Grantee or repurchased by the Company pursuant to Section 6.6 hereof, such share may again be optioned, granted or awarded hereunder, subject to the limitations of Section 2.1.

ARTICLE III

GRANTING OF OPTIONS

3.1 Eligibility. Any Employee, consultant or Non-Employee Director selected by the Committee pursuant to Section 3.4(a)(i) shall be eligible to be granted an Option. Each Director (other than any Non-Employee Directors) shall be eligible to be granted Options at the times and in the manner set forth in
Section 3.4(d).

3.2 Disqualification for Stock Ownership. No person may be granted an Incentive Stock Option under this Plan if such person, at the time the Incentive Stock Option is granted, owns stock possessing more than ten percent (10%) of the total combined voting power of all classes of stock of the Company or any then existing Company Subsidiary unless such Incentive Stock Option conforms to the applicable provisions of Section 422 of the Code.

3.3 Qualification of Incentive Stock Options. No Incentive Stock Option shall be granted to any person who is not an employee (as defined in
Section 3401(c) of the Code) of the Company or of a Company Subsidiary (within the meaning of the first sentence of the definition thereof).

3.4 Granting of Options.

(a) The Committee shall from time to time, in its absolute discretion, and subject to applicable limitations of this Plan:

(i) Determine which Employees are key Employees and select from among the key Employees, consultants and Non-Employee Directors (including Employees, consultants and Non-Employee Directors who have previously received Options or other awards under this Plan) such of them as in its opinion should be granted Options;

(ii) Subject to the Award Limit and the Stock Ownership Limit, determine the number of shares to be subject to such Options granted to the selected key Employees or consultants;

9

(iii) Determine whether such Options are to be Incentive Stock Options or Non-Qualified Stock Options and whether such Options are to qualify as performance-based compensation as described in Section 162(m)(4)(C) of the Code; and

(iv) Determine the terms and conditions of such Options, consistent with this Plan; provided, however, that the terms and conditions of Options intended to qualify as performance-based compensation as described in Section 162(m)(4)(C) of the Code shall include, but not be limited to, such terms and conditions as may be necessary to meet the applicable provisions of Section 162(m) of the Code.

(b) Upon the selection of a key Employee or consultant to be granted an Option, the Committee shall instruct the Secretary of the Company to issue the Option and may impose such conditions on the grant of the Option as it deems appropriate. Without limiting the generality of the preceding sentence, the Committee may, in its discretion and on such terms as it deems appropriate, require as a condition on the grant of an Option to an Employee or consultant that the Employee or consultant surrender for cancellation some or all of the unexercised Options, awards of Restricted Stock or Stock Appreciation Rights or other rights which have been previously granted to him under this Plan or otherwise. An Option, the grant of which is conditioned upon such surrender, may have an option price lower (or higher) than the exercise price of such surrendered Option or other award, may cover the same (or a lesser or greater) number of shares as such surrendered Option or other award, may contain such other terms as the Committee deems appropriate, and shall be exercisable in accordance with its terms, without regard to the number of shares, price, exercise period or any other term or condition of such surrendered Option or other award.

(c) Any Incentive Stock Option granted under this Plan may be modified by the Committee to disqualify such option from treatment as an "incentive stock option" under Section 422 of the Code.

(d) During the term of the Plan and subject to the Stock Ownership Limit, each person who is an Independent Director as of the date of the consummation of the initial public offering of Common Stock automatically shall be granted (i) an Option to purchase 10,000 shares of Common Stock (subject to adjustment as provided in Section 9.3) on the date of such initial public offering and (ii) provided that the Independent Director is still an Independent Director on the date of each such grant, an Option to purchase 1,000 shares of Common Stock (subject to adjustment as provided in Section 9.3) on the date of each anniversary of the initial election of such Independent Director to the Board. During the term of the Plan, a person who is initially elected to the Board after the consummation of the initial public offering of Common Stock and who is an Independent Director at the time of such initial election shall be granted an Option on the date of such initial election to purchase such number of shares of Common Stock as the Board (excluding such Independent Director) may determine in its sole discretion and (ii) provided that the Independent Director is still an Independent Director on the date of each such grant, an Option to purchase 1,000 shares of Common Stock (subject to adjustment as provided in
Section 9.3) on the date of each anniversary of the initial election of such Independent Director to the Board. Any directors

10

who are also Employees and who subsequently cease to be Employees but remain on the Board will receive an initial Option grant pursuant to clause (i) of the preceding sentence as the Committee shall determine in its sole discretion, and to the extent that they are otherwise eligible, will receive, after the time that they cease to be Employees, Options as described in clause (ii) of the preceding sentence. All the foregoing Option grants authorized by this Section 3.4(d) are subject to stockholder approval of the Plan.

ARTICLE IV

TERMS OF OPTIONS

4.1 Option Agreement. Each Option shall be evidenced by a written Stock Option Agreement, which shall be executed by the Optionee and an authorized officer of the Company and which shall contain such terms and conditions as the Committee (or the Board, in the case of Options granted to Independent Directors) shall determine, consistent with this Plan. Stock Option Agreements evidencing Options intended to qualify as performance-based compensation as described in Section 162(m)(4)(C) of the Code shall contain such terms and conditions as may be necessary to meet the applicable provisions of
Section 162(m) of the Code. Stock Option Agreements evidencing Incentive Stock Options shall contain such terms and conditions as may be necessary to meet the applicable provisions of Section 422 of the Code.

4.2 Option Price. The price per share of the shares subject to each Option shall be set by the Committee; provided, however, that such price shall be no less than (i) the par value of a share of Common Stock unless otherwise permitted by applicable state law, and (ii) the Fair Market Value of a share of Common Stock on the date the Option is granted; provided, further, in the case of Incentive Stock Options granted to an individual then owning (within the meaning of Section 424(d) of the Code) more than 10% of the total combined voting power of all classes of stock of the Company or any Company Subsidiary (including, for purposes of this determination, Partnership unit's convertible into Common Stock) such price shall not be less than 110% of the Fair Market Value of a share of Common Stock on the date the Option is granted.

4.3 Option Term. The term of an Option shall be set by the Committee in its discretion, provided, however, that such term shall not be greater than ten (10) years from the date the Option is granted, provided, further, in the case of Incentive Stock Options, the term shall not be more than five (5) years from the date the Incentive Stock Option is granted if the Incentive Stock Option is granted to an individual then owning (within the meaning of Section 424(d) of the Code) more than 10% of the total combined voting power of all classes of stock of the Company or any Company Subsidiary (including, for purposes of this determination, Partnership unit's exchangeable for Common Stock). Except as limited by (i) requirements of Section 422 of the Code and regulations and rulings thereunder applicable to Incentive Stock Options and (ii) the preceding sentence, the Committee may extend the term of any outstanding Option in connection with any Termination of Employment or

11

Termination of Consultancy of the Optionee, or amend any other term or condition of such Option relating to such a termination.

4.4 Option Vesting.

(a) The period during which the right to exercise an Option in whole or in part vests in the Optionee shall be set by the Committee and the Committee may determine that an Option may not be exercised in whole or in part for a specified period after it is granted; provided, however, that, unless the Committee otherwise provides in the terms of the Option or otherwise, no Option shall be exercisable by any Optionee who is then subject to Section 16 of the Exchange Act within the period ending six months and one day after the date the Option is granted; and provided, further, Options granted to Independent Directors and Services Company Independent Directors shall become exercisable in cumulative annual installments of 33-1/3% on each of the first, second and third anniversaries of the date of Option grant, without variation or acceleration hereunder except as provided in Section 9.3(c). Unless the Committee provides otherwise, all other Options granted by the Company shall become exercisable in cumulative annual installments of 33-1/3% on each of the first, second and third anniversaries of the date of Option grant. Subject to the terms of this Section 4.4(a), at any time after grant of an Option, the Committee may, in its sole and absolute discretion and subject to whatever terms and conditions it selects, accelerate the period during which an Option (except an Option granted to an Independent Director or a Services Company Independent Director) vests.

(b) No portion of an Option which is unexercisable at Termination of Employment, Termination of Directorship or Termination of Consultancy, as applicable, shall thereafter become exercisable, except as may be otherwise provided by the Committee in the case of Options granted to Employees, consultants or Non-Employee Directors either in the Stock Option Agreement or by action of the Committee following the grant of the Option.

(c) To the extent that the aggregate Fair Market Value of stock with respect to which "incentive stock options" (within the meaning of Section 422 of the Code, but without regard to Section 422(d) of the Code) are exercisable for the first time by an Optionee during any calendar year (under the Plan and all other incentive stock option plans of the Company and any Company Subsidiary) exceeds $100,000, such Options shall be treated as Non-Qualified Options to the extent required by Section 422 of the Code. The rule set forth in the preceding sentence shall be applied by taking Options into account in the order in which they were granted. For purposes of this Section 4.4(c), the Fair Market Value of stock shall be determined as of the time the Option with respect to such stock is granted.

4.5 No Right to Continue as Employee or Consultant. Nothing in this Plan or in any Stock Option Agreement hereunder shall confer upon any Optionee any right to continue in the employ of, or as a consultant for, the Company, any Company Subsidiary, the Partnership or any Partnership Subsidiary, or as a director of the Company, or shall interfere with or restrict in any way the rights of the Company, any Company Subsidiary, the

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Partnership and any Partnership Subsidiary, which are hereby expressly reserved, to discharge any Optionee at any time for any reason whatsoever, with or without good cause.

4.6 Exercise of Option after Termination of Employment, Consultancy
or Directorship.

(a) An Option granted to an Employee is exercisable by an Optionee only while the Optionee is an Employee. The preceding notwithstanding, the Committee may determine that an Option granted to an Employee may be exercised subsequent to an Optionee's Termination of Employment, subject to the following limitations:

(i) If the Optionee dies while an Option is exercisable under the terms of this Plan, the Optionee's Beneficiary may exercise such rights, to the extent the Optionee could have done so immediately preceding his death. Any such Option must be exercised within twelve
(12) months after the Optionee's death and the Committee may in its sole and absolute discretion extend such period to accommodate such exercise; or

(ii) If the Optionee's Termination of Employment is due to the Optionee's permanent and total disability, as defined in Section 22(e)(3) of the Code, the Optionee may exercise his Option, to the extent exercisable as of the Optionee's Termination of Employment, within twelve (12) months after termination; or

(iii) If the Optionee's employment is terminated for any reason other than those set forth in subsections (i) or (ii) above, the Optionee may exercise his Option, to the extent exercisable as of his Termination of Employment, within three (3) months after Termination of Employment, unless the Employee dies within said three-month period.

(iv) Notwithstanding (i) through (iii) above, an Option may not be exercised later than the Option's Expiration Date.

(b) No Option granted to an Independent Director or a Services Company Independent Director may be exercised to any extent by anyone after the first to occur of the following events:

(i) The expiration of twelve (12) months from the date of the Optionee's death; or

(ii) The expiration of twelve (12) months from the date of the Optionee's Termination of Directorship by reason of his permanent and total disability (within the meaning of Section 22(e)(3) of the Code); or

(iii) The expiration of three (3) months from the date of the Optionee's Termination of Directorship for any reason other than such

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Optionee's death or his permanent and total disability, unless the Optionee dies within said three-month period.

(iv) Notwithstanding (i) through (iii) above, an Option may not be exercised later than the Option's Expiration Date.

4.7 Consideration. In consideration of the granting of a Non- Qualified Stock Option, the Optionee shall agree, in the written Stock Option Agreement, to remain in the employ of, or act as a consultant for, the Company, a Company Subsidiary, the Partnership, a Partnership Subsidiary, the Services Company or a Services Company Subsidiary (or to serve as a Director) for a period of at least one year after the Non-Qualified Stock Option is granted (or until the next annual meeting of the stockholders of the Company, in the case of a Director). In consideration of the granting of an Incentive Stock Option, the Optionee shall agree, in the written Stock Option Agreement, to remain in the employ of the Company or a Company Subsidiary for a period of at least one year after the Incentive Stock Option is granted. Nothing in this Plan or in any Stock Option Agreement hereunder shall confer upon any Optionee any right to (i) continue in the employ of or consult for the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary or as a director of the Company or the Services Company or (ii) receive severance pay from the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary.

ARTICLE V

EXERCISE OF OPTIONS

5.1 Partial Exercise. An exercisable Option may be exercised in whole or in part. However, an Option shall not be exercisable with respect to fractional shares and the Committee (or the Board, in the case of Options granted to Independent Directors) may require that, by the terms of the Option, a partial exercise be with respect to a minimum number of shares.

5.2 Manner of Exercise. All or a portion of an exercisable Option shall be deemed exercised upon delivery of all of the following to the Secretary of the Company or his office:

(a) A written notice complying with the applicable rules established by the Committee (or the Board in the case of Options granted to Independent Directors), the Company or the Partnership stating that the Option, or a portion thereof, is exercised. The notice shall be signed by the Optionee or other person then entitled to exercise the Option or such portion;

(b) Such representations and documents as the Committee (or the Board, in the case of Options granted to Independent Directors), in its absolute discretion, deems

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necessary or advisable to effect compliance with all applicable provisions of the Securities Act of 1933, as amended, and any other federal or state securities laws or regulations. The Committee or Board may, in its absolute discretion, also take whatever additional actions it deems appropriate to effect such compliance including, without limitation, placing legends on share certificates and issuing stop-transfer notices to agents and registrars;

(c) In the event that the Option shall be exercised pursuant to
Section 10.1 by any person or persons other than the Optionee, appropriate proof of the right of such person or persons to exercise the Option; and

(d) Full cash payment to (i) the Secretary of the Company for the shares with respect to which the Option, or portion thereof, is exercised. However, the Committee (or the Board, in the case of Options granted to Independent Directors), may in its discretion (i) allow a delay in payment up to thirty (30) days from the date the Option, or portion thereof, is exercised;
(ii) allow payment, in whole or in part, through the delivery of shares of Common Stock owned by the Optionee, duly endorsed for transfer to the Company with a Fair Market Value on the date of delivery equal to the aggregate exercise price of the Option or exercised portion thereof; (iii) allow payment, in whole or in part, through the surrender of shares of Common Stock then issuable upon exercise of the Option having a Fair Market Value on the date of Option exercise equal to the aggregate exercise price of the Option or exercised portion thereof; (iv) allow payment, in whole or in part, through the delivery of property of any kind which constitutes good and valuable consideration; (v) allow payment, in whole or in part, through the delivery of a full recourse promissory note bearing interest (at no less than such rate as shall then preclude the imputation of interest under the Code) and payable upon such terms as may be prescribed by the Committee or the Board; (vi) allow payment, in whole or in part, through the delivery of a notice that the Optionee has placed a market sell order with a broker with respect to shares of Common Stock then issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction of the Option exercise price; or (vii) allow payment through any combination of the consideration provided in the foregoing subparagraphs (ii),
(iii), (iv), (v) and (vi). In the case of a promissory note, the Committee (or the Board, in the case of Options granted to Independent Directors) may also prescribe the form of such note and the security to be given for such note. The Option may not be exercised, however, by delivery of a promissory note or by a loan from the Company when or where such loan or other extension of credit is prohibited by law.

5.3 Transfer of Shares to a Company Employee, Independent Director or
Other Board Member. As soon as practicable after receipt by the Company, pursuant to Section 5.2(d), of payment for the shares with respect to which an Option (which in the case of a Company Employee or Company consultant was issued to and is held by such Company Employee or Company consultant in his capacity as a Company Employee or a Company consultant, as the case may be), or portion thereof, is exercised by an Optionee who is a Company Employee, Independent Director or a consultant to the Company, with respect to each such exercise, the Company shall transfer to the Optionee the number of shares equal to

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(a) the amount of the payment made by the Optionee to the Company pursuant to Section 5.2(d), divided by

(b) the price per share of the shares subject to the Option as determined pursuant to Section 4.2.

5.4 Transfer of Shares to a Partnership Employee. As soon as practicable after receipt by the Company, pursuant to Section 5.2(d), of payment for the shares with respect to which an Option (which was issued to and is held by a Partnership Employee in his capacity as a Partnership Employee), or portion thereof, is exercised by an Optionee who is a Partnership Employee, with respect to each such exercise:

(a) the Company shall transfer to the Optionee the number of shares equal to (A) the amount of the payment made by the Optionee to the Company pursuant to Section 5.2(d) divided by (B) the Fair Market Value of a share of Common Stock at the time of exercise (the "Partnership Optionee Purchased Shares");

(b) the Company shall sell to the Partnership the number of shares (the "Partnership Purchased Shares") equal to the excess of (A) the amount obtained by dividing (i) the amount of the payment made by the Optionee to the Company pursuant to Section 5.2(d) by (ii) the price per share of the shares subject to the Option as determined pursuant to Section 4.2., over (B) the Partnership Optionee Purchased Shares. The price to be paid by the Partnership to the Company for the Partnership Purchased Shares (the "Partnership Purchase Price") shall be an amount equal to the product of (A) the number of Partnership Purchased Shares multiplied by (B) the Fair Market Value of a share of Common Stock at the time of the exercise; and

(c) As soon as practicable after receipt of the Partnership Purchased Shares by the Partnership, the Partnership shall transfer such shares to the Optionee at no additional cost, as additional compensation.

5.5 Transfer of Shares to a Services Company Employee, Services
Company Independent Director or other Non-Employee Members of the Services
Company Board. As soon as practicable after receipt by the Company, pursuant to Section 5.2(d), of payment for the shares with respect to which an Option (which in the case of a Services Company Employee was issued to and is held by such Services Company Employee in his capacity as a Services Company Employee), or portion thereof, is exercised by an Optionee who is a Services Company Employee, a Services Company Independent Director or another member of the Services Company Board who is not an Employee, with respect to each such exercise:

(a) the Company shall transfer to the Optionee the number of shares equal to (A) the amount of the payment made by the Optionee to the Company pursuant to Section 5.2(d) divided by (B) the Fair Market Value of a share of Common Stock at the time of exercise (the "Services Company Optionee Purchased Shares");

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(b) the Company shall sell to the Partnership the number of shares (the "Services Company Purchased Shares") equal to the excess of (A) the amount obtained by dividing (i) the amount of the payment made by the Optionee to the Company pursuant to Section 5.2(d) by (ii) the price per share of the shares subject to the Option as determined pursuant to Section 4.2, over (B) the Services Company Optionee Purchased Shares. The price to be paid by the Partnership to the Company for the Services Company Purchased Shares (the "Services Company Purchase Price") shall be an amount equal to the product of (A) the number of Services Company Purchased Shares multiplied by (B) the Fair Market Value of a share of Common Stock at the time of the exercise;

(c) as soon as practicable after receipt of the Services Company Purchased Shares by the Partnership, the Partnership shall transfer such shares to the Services Company at no additional cost;

(d) as soon as practicable after receipt of the Services Company Purchased Shares by the Services Company, the Services Company shall transfer such shares to the Optionee at no additional cost, as additional compensation; and

(e) the value of any Options, Restricted Stock and other benefits provided by the Partnership to the Services Company under this Plan are deemed to constitute an additional development fee to the Services Company from the Partnership under the Development Services Contract equal to the value of such Options, Restricted Stock and other benefits.

5.6 Transfer of Payment to the Partnership. As soon as practicable after receipt by the Company (i) of the amount described in Section 5.2(d) and, where applicable, (ii) a related Partnership Purchase Price or Services Company Purchase Price described in Section 5.4 or 5.5, the Company shall contribute to the Partnership an amount of cash equal to such payment and the Partnership shall issue an additional interest in the Partnership on the terms set forth in the Partnership Agreement.

5.7 Conditions to Issuance of Stock Certificates. The Company or the Partnership shall not be required to issue or deliver any certificate or certificates for shares of stock purchased upon the exercise of any Option or portion thereof prior to fulfillment of all of the following conditions:

(a) The admission of such shares to listing on all stock exchanges on which such class of stock is then listed;

(b) The completion of any registration or other qualification of such shares under any state or federal law, or under the rulings or regulations of the Securities and Exchange Commission or any other governmental regulatory body which the Committee or Board shall, in its absolute discretion, deem necessary or advisable;

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(c) The obtaining of any approval or other clearance from any state or federal governmental agency which the Committee or Board shall, in its absolute discretion, determine to be necessary or advisable;

(d) The lapse of such reasonable period of time following the exercise of the Option as the Committee or Board may establish from time to time for reasons of administrative convenience; and

(e) The receipt by the Company of full payment for such shares, including payment of any applicable withholding tax.

5.8 Rights as Stockholders. The holders of Options shall not be, nor have any of the rights or privileges of, stockholders of the Company in respect of any shares purchasable upon the exercise of any part of an Option unless and until certificates representing such shares have been issued by the Company to such holders.

5.9 Ownership and Transfer Restrictions. Shares acquired through the exercise of an Option shall be subject to the restrictions on ownership and transfer set forth in the Restated Articles. The Committee (or the Board, in the case of Options granted to Independent Directors), in its absolute discretion, may impose such additional restrictions on the ownership and transferability of the shares purchasable upon the exercise of an Option as it deems appropriate. Any such restriction shall be set forth in the respective Stock Option Agreement and may be referred to on the certificates evidencing such shares. The Committee may require the Employee to give the Company prompt notice of any disposition of shares of Common Stock acquired by exercise of an Incentive Stock Option within the later of (i) two years from the date of granting such Option to such Employee or (ii) one year after the transfer of such shares to such Employee. The Committee (or the Board, in the case of Options granted to Independent Directors) may direct that the certificates evidencing shares acquired by exercise of an Option refer to such requirement to give prompt notice of disposition.

5.10 Restrictions on Exercise of Option. An Option is not exercisable if in the sole and absolute discretion of the Committee the exercise of such Option would likely result in any of the following:

(a) the Optionee's or any other person's ownership of Capital Stock being in violation of the Stock Ownership Limit; or

(b) income to the Company that could impair the Company's status as a real estate investment trust, within the meaning of Sections 856 through 860 of the Code.

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ARTICLE VI

AWARD OF RESTRICTED STOCK

6.1 Award of Restricted Stock.

(a) The Committee may from time to time, in its absolute discretion:

(i) Select from among the key Employees or consultants (including Employees or consultants who have previously received other awards under this Plan) such of them as in its opinion should be awarded Restricted Stock; and

(ii) Determine the purchase price, if any, and other terms and conditions (including without limitation, in the case of awards to Partnership Employees, Services Company Employees and Services Company Directors, the mechanism for the transfer of the Restricted Stock and payment therefor) applicable to such Restricted Stock, consistent with this Plan.

(b) The Committee shall establish the purchase price, if any, and form of payment for Restricted Stock; provided, however, that such purchase price shall be no less than the par value of the Common Stock to be purchased unless otherwise permitted by applicable state law. In all cases, legal consideration shall be required for each issuance of Restricted Stock.

(c) Upon the selection of a key Employee or consultant to be awarded Restricted Stock, the Committee shall instruct the Secretary of the Company to issue such Restricted Stock and may impose such conditions on the issuance of such Restricted Stock as it deems appropriate.

6.2 Restricted Stock Agreement. Restricted Stock shall be issued only pursuant to a written Restricted Stock Agreement, which shall be executed by the selected key Employee or consultant and an authorized officer of the Company and which shall contain such terms and conditions as the Committee shall determine, consistent with this Plan.

6.3 Consideration. As consideration for the issuance of Restricted Stock, in addition to payment of any purchase price, the Restricted Stockholder shall agree, in the written Restricted Stock Agreement, to remain in the employ of, or to consult for, the Company, a Company Subsidiary, the Partnership, a Partnership Subsidiary, the Services Company or a Services Company Subsidiary (whichever is applicable) for a period of at least one year after the Restricted Stock is issued (or such shorter period as may be fixed in the Restricted Stock Agreement or by action of the Committee following grant of the Restricted Stock). Nothing in this Plan or in any Restricted Stock Agreement hereunder shall (i) confer on any Restricted Stockholder any right to (a) continue in the employ of, or as a consultant for, the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary or (b) receive severance pay from

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the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary or (ii) interfere with or restrict in any way the rights of the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary, which are hereby expressly reserved, to discharge any Restricted Stockholder at any time for any reason whatsoever, with or without good cause.

6.4 Rights as Stockholders. Upon delivery of the shares of Restricted Stock to the escrow holder pursuant to Section 6.7, the Restricted Stockholder shall have, unless otherwise provided by the Committee, all the rights of a stockholder with respect to said shares, subject to the restrictions in his Restricted Stock Agreement, including the right to receive all dividends and other distributions paid or made with respect to the shares; provided, however, that in the discretion of the Committee, any extraordinary distributions with respect to the Common Stock shall be subject to the restrictions set forth in Section 6.5.

6.5 Restriction. All shares of Restricted Stock issued under this Plan (including any shares received by holders thereof with respect to shares of Restricted Stock as a result of stock dividends, stock splits or any other form of recapitalization) shall, in the terms of each individual Restricted Stock Agreement, be subject to such restrictions as the Committee shall provide, which restrictions may include, without limitation, restrictions concerning voting rights and transferability and restrictions based on duration of employment with the Company, Company performance and individual performance; provided, however, that, unless the Committee otherwise provides in the terms of the Restricted Stock Agreement or otherwise, no share of Restricted Stock granted to a person subject to Section 16 of the Exchange Act shall be sold, assigned or otherwise transferred until at least six months have elapsed from (but excluding) the date on which the Restricted Stock was issued, and provided, further, that by action taken after the Restricted Stock is issued, the Committee may, on such terms and conditions as it may determine to be appropriate, remove any or all of the restrictions imposed by the terms of the Restricted Stock Agreement. Restricted Stock may not be sold or encumbered until all restrictions are terminated or expire. Unless provided otherwise by the Committee, if no consideration was paid by the Restricted Stockholder upon issuance, a Restricted Stockholder's rights in unvested Restricted Stock shall lapse upon Termination of Employment or, if applicable, upon Termination of Consultancy with the Company or the Partnership.

6.6 Repurchase of Restricted Stock. The Committee shall provide in the terms of each individual Restricted Stock Agreement that the Company shall have the right to repurchase from the Restricted Stockholder the Restricted Stock then subject to restrictions under the Restricted Stock Agreement immediately upon a Termination of Employment or, if applicable, upon a Termination of Consultancy between the Restricted Stockholder and the Company, at a cash price per share equal to the price paid by the Restricted Stockholder for such Restricted Stock; provided, however, that provision may be made that no such right of repurchase shall exist in the event of a Termination of Employment or Termination of Consultancy without cause, or following a change in control of the Company or the Partnership, or because of the Restricted Stockholder's retirement, death or disability, or otherwise.

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6.7 Escrow. The Secretary of the Company or such other escrow holder as the Committee may appoint shall retain physical custody of each certificate representing Restricted Stock until all of the restrictions imposed under the Restricted Stock Agreement with respect to the shares evidenced by such certificate expire or shall have been removed.

6.8 Legend. In order to enforce the restrictions imposed upon shares of Restricted Stock hereunder, the Committee shall cause a legend or legends to be placed on certificates representing all shares of Restricted Stock that are still subject to restrictions under Restricted Stock Agreements, which legend or legends shall make appropriate reference to the conditions imposed thereby.

ARTICLE VII

STOCK APPRECIATION RIGHTS

7.1 Grant of Stock Appreciation Rights. A Stock Appreciation Right may be granted to any key Employee or consultant selected by the Committee. A Stock Appreciation Right may be granted (i) in connection and simultaneously with the grant of an Option, (ii) with respect to a previously granted Option, or (iii) independent of an Option. A Stock Appreciation Right shall be subject to such terms and conditions (including, without limitation, in the case of awards to Partnership Employees, Services Company Employees and Services Company Directors, the mechanism for the transfer of rights under such awards and payment therefor) not inconsistent with this Plan as the Committee shall impose and shall be evidenced by a written Stock Appreciation Right Agreement, which shall be executed by the Grantee and an authorized officer of the Company. The Committee, in its discretion, may determine whether a Stock Appreciation Right is to qualify as performance-based compensation as described in Section 162(m)(4)(C) of the Code and Stock Appreciation Right Agreements evidencing Stock Appreciation Rights intended to so qualify shall contain such terms and conditions as may be necessary to meet the applicable provisions of section 162(m) of the Code. Without limiting the generality of the foregoing, the Committee may, in its discretion and on such terms as it deems appropriate, require as a condition of the grant of a Stock Appreciation Right to an Employee or consultant that the Employee or consultant surrender for cancellation some or all of the unexercised Options, awards of Restricted Stock or Stock Appreciation Rights, or other rights which have been previously granted to him under this Plan or otherwise. A Stock Appreciation Right, the grant of which is conditioned upon such surrender, may have an exercise price lower (or higher) than the exercise price of the surrendered Option or other award, may cover the same (or a lesser or greater) number of shares as such surrendered Option or other award, may contain such other terms as the Committee deems appropriate, and shall be exercisable in accordance with its terms, without regard to the number of shares, price, exercise period or any other term or condition of such surrendered Option or other award.

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7.2 Coupled Stock Appreciation Rights.

(a) A Coupled Stock Appreciation Right ("CSAR") shall be related to a particular Option and shall be exercisable only when and to the extent the related Option is exercisable.

(b) A CSAR may be granted to the Grantee for no more than the number of shares subject to the simultaneously or previously granted Option to which it is coupled.

(c) A CSAR shall entitle the Grantee (or other person entitled to exercise the Option pursuant to this Plan) to surrender to the Company unexercised a portion of the Option to which the CSAR relates (to the extent then exercisable pursuant to its terms) and to receive from the Company or the Partnership, as provided in the CSAR agreement, in exchange therefor an amount determined by multiplying the difference obtained by subtracting the Option exercise price from the Fair Market Value of a share of Common Stock on the date of exercise of the CSAR by the number of shares of Common Stock with respect to which the CSAR shall have been exercised, subject to any limitations the Committee may impose.

7.3 Independent Stock Appreciation Rights.

(a) An Independent Stock Appreciation Right ("ISAR") shall be unrelated to any Option and shall have a term set by the Committee. An ISAR shall be exercisable in such installments as the Committee may determine. An ISAR shall cover such number of shares of Common Stock as the Committee may determine; provided, however, that unless the Committee otherwise provides in the terms of the ISAR or otherwise, no ISAR granted to a person subject to
Section 16 of the Exchange Act shall be exercisable until at least six months have elapsed from (but excluding) the date on which the Option was granted. The exercise price per share of Common Stock subject to each ISAR shall be set by the Committee. An ISAR is exercisable only while the Grantee is an Employee or consultant; provided that the Committee may determine that the ISAR may be exercised subsequent to Termination of Employment or Termination of Consultancy without cause, or following a change in control of the Company or the Partnership, or because of the Grantee's retirement, death or disability, or otherwise.

(b) An ISAR shall entitle the Grantee (or other person entitled to exercise the ISAR pursuant to this Plan) to exercise all or a specified portion of the ISAR (to the extent then exercisable pursuant to its terms) and to receive from the Company or the Partnership, as provided in the ISAR agreement, an amount determined by multiplying the difference obtained by subtracting the exercise price per share of the ISAR from the Fair Market Value of a share of Common Stock on the date of exercise of the ISAR by the number of shares of Common Stock with respect to which the ISAR shall have been exercised, subject to any limitations the Committee may impose.

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7.4 Payment and Limitations on Exercise.

(a) Payment of the amount determined under Section 8.2(c) and 8.3(b) above shall be in cash, in Common Stock (based on its Fair Market Value as of the date the Stock Appreciation Right is exercised) or a combination of both, as determined by the Committee. To the extent such payment is effected in Common Stock it shall be made subject to satisfaction of all provisions of Section 5.6 and Section 5.8 hereinabove pertaining to Options.

(b) Grantees of Stock Appreciation Rights may be required to comply with any timing or other restrictions with respect to the settlement or exercise of a Stock Appreciation Right, including a window-period limitation, as may be imposed in the discretion of the Board or Committee.

7.5 Consideration. In consideration of the granting of a Stock Appreciation Right, the Grantee shall agree, in the written Stock Appreciation Right Agreement, to remain in the employ of, or to consult for, the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary for a period of at least one year after the Stock Appreciation Right is granted (or such shorter period as may be fixed in the Stock appreciation Right Agreement or by action of the Committee following grant of the Restricted Stock). Nothing in this Plan or in any Stock Appreciation Right Agreement hereunder shall (i) confer on any Grantee any right to (a) continue in the employ of, or as a consultant for, the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary or (b) receive severance pay from the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary or (ii) interfere with or restrict in any way the rights of the Company, any Company Subsidiary, the Partnership, any Partnership Subsidiary, the Services Company or any Services Company Subsidiary, which are hereby expressly reserved, to discharge any Grantee at any time for any reason whatsoever, with or without good cause.

ARTICLE VIII

ADMINISTRATION

8.1 Compensation Committee. Prior to the Company's initial registration of Common Stock under Section 12 of the Exchange Act, the Committee shall consist of the entire Board. Following such registration, the Committee (or another committee or a subcommittee of the Board assuming the functions of the Committee under this Plan) shall consist solely of two or more Independent Directors appointed by and holding office at the pleasure of the Board, each of whom is both a "non-employee director" as defined by Rule 16b-3 and an "outside director" for purposes of Section 162(m) of the Code. Appointment of Committee members shall be effective upon acceptance of appointment. Committee members

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may resign at any time by delivering written notice to the Board. Vacancies in the Committee may be filled by the Board.

8.2 Duties and Powers of Committee. It shall be the duty of the Committee to conduct the general administration of this Plan in accordance with its provisions. The Committee shall have the power to interpret this Plan and the agreements pursuant to which Options, awards of Restricted Stock and Stock Appreciation Rights are granted or awarded, and to adopt such rules for the administration, interpretation, and application of this Plan as are consistent therewith and to interpret, amend or revoke any such rules. Notwithstanding the foregoing, the full Board, acting by a majority of its members in office, shall conduct the general administration of the Plan with respect to Options granted to Independent Directors. Any such grant or award under this Plan need not be the same with respect to each Optionee, Grantee or Restricted Stockholder. Any such interpretations and rules with respect to Incentive Stock Options shall be consistent with the provisions of Section 422 of the Code. In its absolute discretion, the Board may at any time and from time to time exercise any and all rights and duties of the Committee under this Plan except with respect to matters which under Rule 16b-3 or Section 162(m) of the Code, or any regulations or rules issued thereunder, are required to be determined in the sole discretion of the Committee.

8.3 Majority Rule; Unanimous Written Consent. The Committee shall act by a majority of its members in attendance at a meeting at which a quorum is present or by a memorandum or other written instrument signed by all members of the Committee.

8.4 Compensation; Professional Assistance; Good Faith Actions.
Members of the Committee shall receive such compensation for their services as members as may be determined by the Board. All expenses and liabilities which members of the Committee incur in connection with the administration of this Plan shall be borne by the Company. The Committee may, with the approval of the Board, employ attorneys, consultants, accountants, appraisers, brokers, or other persons. The Committee, the Company and the Company's officers and Directors shall be entitled to rely upon the advice, opinions or valuations of any such persons. All actions taken and all interpretations and determinations made by the Committee or the Board in good faith shall be final and binding upon all Optionees, Grantees, Restricted Stockholders, the Company, the Partnership and all other interested persons. No members of the Committee or Board shall be personally liable for any action, determination or interpretation made in good faith with respect to this Plan, Options, awards of Restricted Stock or Stock Appreciation Rights, and all members of the Committee and the Board shall be fully protected by the Company in respect of any such action, determination or interpretation.

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ARTICLE IX

MISCELLANEOUS PROVISIONS

9.1 Not Transferable. Options, Restricted Stock awards and Stock Appreciation Rights under this Plan may not be sold, pledged, assigned, or transferred in any manner other than by will or the laws of descent and distribution or pursuant to a QDRO, unless and until such rights or awards have been exercised, or the shares underlying such rights or awards have been issued, and all restrictions applicable to such shares have lapsed. No Option, Restricted Stock award or Stock Appreciation Right or interest or right therein shall be liable for the debts, contracts or engagements of the Optionee, Grantee or Restricted Stockholder or his successors in interest or shall be subject to disposition by transfer, alienation, anticipation, pledge, encumbrance, assignment or any other means whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable proceedings (including bankruptcy), and any attempted disposition thereof shall be null and void and of no effect, except to the extent that such disposition is permitted by the preceding sentence.

During the lifetime of the Optionee or Grantee, only he may exercise an Option or other right or award (or any portion thereof) granted to him under the Plan, unless it has been disposed of pursuant to a QDRO. After the death of the Optionee or Grantee, any exercisable portion of an Option or other right or award may, prior to the time when such portion becomes unexercisable under the Plan or the applicable Stock Option Agreement or other agreement, be exercised by his personal representative or by any person empowered to do so under the deceased Optionee's or Grantee's will or under the then applicable laws of descent and distribution.

9.2 Amendment, Suspension or Termination of this Plan. Except as otherwise provided in this Section 9.2, this Plan shall have a term of ten years but may be wholly or partially amended or otherwise modified, suspended or terminated at any time or from time to time by the Board or the Committee. However, without approval of the Company's stockholders given within twelve months before or after the action by the Board or the Committee, no action of the Board or the Committee may, except as provided in Section 9.3, increase the limits imposed in Section 2.1 on the maximum number of shares which may be issued under this Plan, modify the Award Limit or reduce the minimum purchase price for the exercise of Options as set forth in Section 4.2, and no action of the Committee may be taken that would otherwise require stockholder approval as a matter of applicable law, regulation or rule. No amendment, suspension or termination of this Plan shall, without the consent of the holder of Options, Restricted Stock awards or Stock Appreciation Rights, alter or impair any rights or obligations under any Options, Restricted Stock awards or Stock Appreciation Rights theretofore granted or awarded, unless the award itself otherwise expressly so provides. No Options, Restricted Stock or Stock Appreciation Rights may be granted or awarded during any period of suspension or after termination of this Plan, and in no event may any Incentive Stock Option be granted under this Plan after the first to occur of the following events:

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(a) The expiration of ten years from the date the Plan is adopted by the Board; or

(b) The expiration of ten years from the date the Plan is approved by the Company's stockholders under Section 9.4.

9.3 Changes in Common Stock or Assets of the Company, Acquisition or
Liquidation of the Company and Other Corporate Events.

(a) Subject to Section 9.3(e), in the event that the Committee (or the Board, in the case of Options granted to Independent Directors) determines that any dividend or other distribution (whether in the form of cash, Common Stock, other securities, or other property), recapitalization, reclassification, stock split, reverse stock split, reorganization, merger, consolidation, split- up, spin-off, combination, repurchase, liquidation, dissolution, or sale, transfer, exchange or other disposition of all or substantially all of the assets of the Company (including, but not limited to, a Corporate Transaction), or exchange of Common Stock or other securities of the Company, issuance of warrants or other rights to purchase Common Stock or other securities of the Company, or other similar corporate transaction or event, in the Committee's sole discretion (or in the case of Options granted to Independent Directors, the Board's sole discretion), affects the Common Stock such that an adjustment is determined by the Committee to be appropriate in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan or with respect to an Option, Restricted Stock award or Stock Appreciation Right, then the Committee (or the Board, in the case of Options granted to Independent Directors) shall, in such manner as it may deem equitable, adjust any or all of

(i) the number and kind of shares of Common Stock (or other securities or property) with respect to which Options or Stock Appreciation Rights may be granted under the Plan, or which may be granted as Restricted Stock (including, but not limited to, adjustments of the limitations in
Section 2.1 on the maximum number and kind of shares which may be issued and adjustments of the Award Limit),

(ii) the number and kind of shares of Common Stock (or other securities or property) subject to outstanding Options or Stock Appreciation Rights, and in the number and kind of shares of outstanding Restricted Stock, and

(iii) the grant or exercise price with respect to any Option or Stock Appreciation Right.

(b) Subject to Section 9.3(e), in the event of any corporate transaction or other transaction or event described in Section 9.3(a) which results in shares of Common Stock being exchanged for or converted into cash, securities (including securities of another corporation) or other property, the Committee will have the right to terminate this Plan as of the date of the event or transaction, in which case all options, rights and other awards

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granted under this Plan shall become the right to receive such cash, securities or other property, net of any applicable exercise price.

(c) Subject to Sections 9.3(e), in the event of any Corporate Transaction or other transaction or event described in Section 9.3(a) or any unusual or nonrecurring transactions or events affecting the Company, any affiliate of the Company, or the financial statements of the Company or any affiliate, or of changes in applicable laws, regulations, or accounting principles, the Committee (or the Board, in the case of Options granted to Independent Directors) in its discretion is hereby authorized to take any one or more of the following actions whenever the Committee (or the Board, in the case of Options granted to Independent Directors) determines that such action is appropriate in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan or with respect to any option, right or other award under this Plan, to facilitate such transactions or events or to give effect to such changes in laws, regulations or principles:

(i) In its sole and absolute discretion, and on such terms and conditions as it deems appropriate, the Committee (or the Board, in the case of Options granted to Independent Directors) may provide, either by the terms of the agreement or by action taken prior to the occurrence of such transaction or event and either automatically or upon the optionee's request, for either the purchase of any such Option, Stock Appreciation Right or any Restricted Stock for an amount of cash equal to the amount that could have been attained upon the exercise of such option, right or award or realization of the optionee's rights had such option, right or award been currently exercisable or payable or fully vested as the replacement of such option, right or award with other rights or property selected by the Committee (or the Board, in the case of Options granted to Independent Directors) in its sole discretion;

(ii) In its sole and absolute discretion, the Committee (or the Board, in the case of Options granted to Independent Directors) may provide, either by the terms of such Option, Stock Appreciation Right or Restricted Stock or by action taken prior to the occurrence of such transaction or event that it cannot be exercised after such event;

(iii) In its sole and absolute discretion, and on such terms and conditions as it deems appropriate, the Committee (or the Board, in the case of Options granted to Independent Directors) may provide, either by the terms of such Option, Stock Appreciation Right or Restricted Stock or by action taken prior to the occurrence of such transaction or event, that for a specified period of time prior to such transaction or event, such option, right or award shall be exercisable as to all shares covered thereby, notwithstanding anything to the contrary in (i) Section 4.4 or
(ii) the provisions of such Option, Stock Appreciation Right or Restricted Stock;

(iv) In its sole and absolute discretion, and on such terms and conditions as it deems appropriate, the Committee (or the Board, in the case of Options granted to Independent Directors) may provide, either by the terms of such Option, Stock Appreciation Right or Deferred Stock or by action taken prior to the

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occurrence of such transaction or event, that upon such event, such option, right or award be assumed by the successor or survivor corporation, or a parent or subsidiary thereof, or shall be substituted for by similar options, rights or awards covering the stock of the successor or survivor corporation, or a parent or subsidiary thereof, with appropriate adjustments as to the number and kind of shares and prices;

(v) In its sole and absolute discretion, and on such terms and conditions as it deems appropriate, the Committee (or the Board, in the case of Options granted to Independent Directors) may make adjustments in the number and type of shares of Common Stock (or other securities or property) subject to outstanding Options, Stock Appreciation Rights, and in the number and kind of outstanding Restricted Stock and/or in the terms and conditions of (including the grant or exercise price), and the criteria included in, outstanding options, rights and awards and options, rights and awards which may be granted in the future; and

(vi) In its sole and absolute discretion, and on such terms and conditions as it deems appropriate, the Committee may provide either by the terms of a Restricted Stock award or by action taken prior to the occurrence of such event that, for a specified period of time prior to such event, the restrictions imposed under a Restricted Stock Agreement upon some or all shares of Restricted Stock may be terminated and some or all shares of such Restricted Stock may cease to be subject to repurchase under
Section 6.6 or forfeiture under Section 6.5 after such event;

(d) Subject to Section 9.3(e) and 9.8, the Committee (or the Board, in the case of Options granted to Independent Directors) may, in its discretion, include such further provisions and limitations in any Option, Stock Appreciation Right or Restricted Stock agreement or certificate, as it may deem equitable and in the best interests of the Company.

(e) With respect to Incentive Stock Options and Options and Stock Appreciation Rights intended to qualify as performance-based compensation under
Section 162(m), no adjustment or action described in this Section 9.3 or in any other provision of the Plan shall be authorized to the extent that such adjustment or action would cause the Plan to violate Section 422(b)(1) of the Code or would cause such option or stock appreciation right to fail to so qualify under Section 162(m), as the case may be, or any successor provisions thereto. Furthermore, no such adjustment or action shall be authorized to the extent such adjustment or action would result in short-swing profits liability under Section 16 or violate the exemptive conditions of Rule 16b-3 unless the Committee (or the Board, in the case of Options granted to Independent Directors) determines that the option or other award is not to comply with such exemptive conditions. The number of shares of Common Stock subject to any option, right or award shall always be rounded to the next whole number.

9.4 Approval of Plan by Stockholders. This Plan will be submitted for the approval of the Company's stockholders within twelve months after the date of the Board's initial adoption of this Plan. Options and Stock Appreciation Rights may be granted and

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Restricted Stock may be awarded prior to such stockholder approval, provided that such Options or Stock Appreciation Rights shall not be exercisable and such Restricted Stock shall not vest prior to the time when this Plan is approved by the stockholders, and provided further that if such approval has not been obtained at the end of said twelve-month period, all Options or Stock Appreciation Rights previously granted and all Restricted Stock previously awarded under this Plan shall thereupon be canceled and become null and void.

9.5 Tax Withholding. The Company and the Partnership shall be entitled to require payment in cash or deduction from other compensation payable to each Optionee, Grantee or Restricted Stockholder of any sums required by federal, state or local tax law to be withheld with respect to the issuance, vesting or exercise of any Option, Restricted Stock or Stock Appreciation Right. The Committee (or the Board, in the case of Options granted to Independent Directors) may in its discretion and in satisfaction of the foregoing requirement allow such Optionee, Grantee or Restricted Stockholder to elect to have the Company withhold shares of Common Stock otherwise issuable under such Option or other award (or allow the return of shares of Common Stock) having a Fair Market Value equal to the sums required to be withheld.

9.6 Loans. The Committee may, in its discretion, extend one or more loans to key Employees in connection with the exercise or receipt of an Option or Stock Appreciation Right granted under this Plan, or the issuance of Restricted Stock awarded under this Plan. The terms and conditions of any such loan shall be set by the Committee.

9.7 Forfeiture Provisions. Pursuant to its general authority to determine the terms and conditions applicable to awards under the Plan, the Committee (or the Board, in the case of Options granted to Independent Directors) shall have the right (to the extent consistent with the applicable exemptive conditions of Rule 16b-3) to provide, in the terms of Options or other awards made under the Plan, or to require the recipient to agree by separate written instrument, that (i) any proceeds, gains or other economic benefit actually or constructively received by the recipient upon any receipt or exercise of the award, or upon the receipt or resale of any Common Stock underlying such award, must be paid to the Company, and (ii) the award shall terminate and any unexercised portion of such award (whether or not vested) shall be forfeited, if (a) a Termination of Employment, Termination of Consultancy or Termination of Directorship occurs prior to a specified date, or within a specified time period following receipt or exercise of the award, or
(b) the recipient at any time, or during a specified time period, engages in any activity in competition with the Company, or which is inimical, contrary or harmful to the interests of the Company, as further defined by the Committee (or the Board, as applicable).

9.8 Limitations Applicable to Section 16 Persons and Performance-
Based Compensation. Notwithstanding any other provision of this Plan, this Plan, and any Option or Stock Appreciation Right granted, or Restricted Stock awarded, to any individual who is then subject to Section 16 of the Exchange Act, shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act (including any amendment to Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, the Plan, Options, Stock

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Appreciation Rights and Restricted Stock granted or awarded hereunder shall be deemed amended to the extent necessary to conform to such applicable exemptive rule. Furthermore, notwithstanding any other provision of this Plan, any Option or Stock Appreciation Right intended to qualify as performance-based compensation as described in Section 162(m)(4)(C) of the Code shall be subject to any additional limitations set forth in Section 162(m) of the Code (including any amendment to Section 162(m) of the Code) or any regulations or rulings issued thereunder that are requirements for qualification as performance-based compensation as described in Section 162(m)(4)(C) of the Code, and this Plan shall be deemed amended to the extent necessary to conform to such requirements.

9.9 Effect of Plan Upon Options and Compensation Plans. The adoption of this Plan shall not affect any other compensation or incentive plans in effect for the Company, any Company Subsidiary, the Partnership or any Partnership Subsidiary. Nothing in this Plan shall be construed to limit the right of the Company or the Partnership (i) to establish any other forms of incentives or compensation for Employees, Directors or consultants of the Company, any Company Subsidiary, the Partnership or any Partnership Subsidiary or (ii) to grant or assume options or other rights otherwise than under this Plan in connection with any proper corporate purpose including but not by way of limitation, the grant or assumption of options in connection with the acquisition by purchase, lease, merger, consolidation or otherwise, of the business, stock or assets of any corporation, partnership, firm or association.

9.10 Section 83(b) Election Prohibited. No Grantee, Optionee or Restricted Stockholder may make an election under Section 83(b) of the Code with respect to any award or grant under this Plan.

9.11 Compliance with Laws. This Plan, the granting and vesting of Options, Restricted Stock awards or Stock Appreciation Rights under this Plan and the issuance and delivery of shares of Common Stock and the payment of money under this Plan or under Options or Stock Appreciation Rights granted or Restricted Stock awarded hereunder are subject to compliance with all applicable federal and state laws, rules and regulations (including but not limited to state and federal securities law and federal margin requirements) and to such approvals by any listing, regulatory or governmental authority as may, in the opinion of counsel for the Company, be necessary or advisable in connection therewith. Any securities delivered under this Plan shall be subject to such restrictions, and the person acquiring such securities shall, if requested by the Company, provide such assurances and representations to the Company as the Company may deem necessary or desirable to assure compliance with all applicable legal requirements. To the extent permitted by applicable law, the Plan, Options, Restricted Stock awards or Stock Appreciation Rights granted or awarded hereunder shall be deemed amended to the extent necessary to conform to such laws, rules and regulations.

9.12 Titles. Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Plan.

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9.13 Governing Law. This Plan and any agreements hereunder shall be administered, interpreted and enforced under the internal laws of the State of Maryland without regard to conflicts of laws thereof.

9.14 Conflicts with Company's Restated Articles. Notwithstanding any other provision of this Plan, no Optionee, Grantee or Restricted Stockholder shall acquire or have any right to acquire any Common Stock, and shall not have other rights under this Plan, which are prohibited under the Company's Restated Articles.

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IN WITNESS WHEREOF, the parties hereto have caused this instrument to be executed by their officers duly authorized on this 31st day of January, 1997.

Kilroy Realty Corporation, a Maryland corporation.

By _____________________________________ John B. Kilroy, Jr.

Chief Executive Officer

Attest:


Secretary

Kilroy Realty, L.P., a Delaware limited
partnership.

By _____________________________________
John B. Kilroy, Jr.
Chief Executive Officer
On Behalf of Kilroy Realty
Corporation, a Maryland corporation,
in its capacity as General Partner


Secretary

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Kilroy Services, Inc., a Maryland corporation.

By _____________________________________ Campbell Hugh Greenup Chief Executive Officer

Attest:


Secretary

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EXHIBIT 10.7

INDEMNIFICATION AGREEMENT

THIS INDEMNIFICATION AGREEMENT (the "Agreement"), dated as of ____________, 1997, is entered into by and among Kilroy Realty Corporation, a Maryland corporation (the "Company"), Kilroy Realty, L.P., a Delaware limited partnership (the "Operating Partnership") and the undersigned Director and/or Officer of the

Company (the "Indemnitee").

RECITALS

WHEREAS, the Indemnitee has agreed to serve as a Director and/or Officer of the Company and the Company wishes the Indemnitee to continue in such capacity. The Indemnitee is willing, under certain circumstances, to continue serving as a Director and Officer of the Company;

WHEREAS, Section 2-418 of the General Corporation Law of the State of Maryland, under which law the Company is organized, empowers corporations to indemnify any person who is or was serving as a director, officer, employee or agent of the corporation or any person who, while a director of the corporation, is or was serving at the request of the corporation as a director, officer, partner, trustee, employee or agent of another corporation, partnership, limited liability company, association, joint venture, trust or other enterprise. As used in this Agreement, the term "other enterprise" shall include, without limitation, employee benefit plans and administrative committees thereof. In addition, the Company includes any domestic or foreign predecessor entity of the Company in a merger, consolidation or other transaction in which the predecessor's existence ceased upon consummation of the transaction; and

WHEREAS, said Section 2-418 and the Bylaws of the Company specify that the indemnification set forth in said Section 2-418 and in the Bylaws, respectively, shall not be deemed to limit the right of the Corporation to indemnify any other person against any liability and expenses to the fullest extent permitted by law, nor shall it be deemed exclusive of any other rights to which those seeking indemnification may be entitled under any agreement, the Articles or Bylaws of the Company, a vote of stockholders or disinterested directors or otherwise, both as to action in such person's official capacity as an officer or director and as to action in another capacity, as the request of the Corporation, while acting as an officer or director of the Corporation;

NOW, THEREFORE, in order to induce the Indemnitee to serve as a Director and/or Officer of the Company and in consideration of his continued service, the Company hereby agrees to indemnify the Indemnitee as follows:


AGREEMENT

1. Indemnity. The Company will indemnify, save and hold harmless the Indemnitee, his executors, administrators or assigns, or, if the Indemnitee is deceased, his estate, spouse, heirs, executors and administrators, for any Expenses (as defined in Section 2 hereof) which the Indemnitee is or becomes legally obligated to pay in connection with any Proceeding. As used in this Agreement, the term "Proceeding" shall mean any threatened, pending or completed claim, action, suit or proceeding, including any appeals, whether brought by or in the right of the Company or otherwise and whether of a civil, criminal, administrative or investigative nature, in which the Indemnitee may be or may have been involved as a party or otherwise, (i) by reason of the fact that the Indemnitee is or was a director or officer of the Company, (ii) by reason of any actual or alleged error or misstatement or misleading statement made or suffered by the Indemnitee, (iii) by reason of any action taken by the Indemnitee or of any inaction on the Indemnitee's part while acting as such director or officer, or (iv) by reason of the fact that the Indemnitee was serving at the request of the Company as a director, trustee, officer, employee or agent of another corporation, partnership, limited liability company, association, joint venture, trust or other enterprise (the "Proceeding"); provided that in each such case the Indemnitee acted in good faith within the course and scope of the Indemnitee's duties and in a manner which the Indemnitee reasonably believed to be in or not opposed to the best interests of the Company, and, in the case of a criminal proceeding, in addition the Indemnitee had no reasonable cause to believe that his act or omission was unlawful.

2. Expenses. As used in this Agreement, the term "Expenses" shall mean all reasonable expenses incurred by the Indemnitee in connection with the Proceeding which shall include, without limitation, damages, judgments, fines, penalties, settlements, costs, attorneys' fees, disbursements and costs of attachment or similar bonds, investigations, and any such expenses of establishing a right to indemnification under this Agreement (the "Expenses"). "Fines" shall include, without limitation, any excise tax assessed with respect to any employee benefit plan. Any such Expenses may be paid by the Company in advance of the final disposition of such action, suit or proceeding.

3. Exclusions. The Company shall not be liable under this Agreement to pay any Expenses in connection with any claim made against the Indemnitee:

(a) to the extent that payment is actually made to the Indemnitee under a valid, enforceable and collectible insurance policy;

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(b) to the extent that the Indemnitee is indemnified and actually paid otherwise than pursuant to this Agreement;

(c) in connection with a judicial action by or in the right of the Company, in respect of any claim, issue or matter as to which the Indemnitee shall have been adjudged to be liable to the Company, unless and only to the extent that any court in which such action was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, the Indemnitee is fairly and reasonably entitled to indemnity for such expenses as such court shall deem proper;

(d) if it is established by final judgment in a court of law or other final adjudication that the act or omission of the Indemnitee that (i) the act or omission of the director or officer was material to the matter giving rise to the proceeding and was committed in bad faith or was the result of active and deliberate dishonesty, (ii) the director or officer actually received an improper personal benefit in money, property or services, or (iii) in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful;

(e) if it is proved by final judgment in a court of law or other final adjudication to have been based upon or attributable to the Indemnitee having gained any personal profit or advantage to which he was not legally entitled;

(f) for a disgorgement of profits made from the purchase and sale by the Indemnitee of securities pursuant to Section 16(b) of the Securities Exchange Act of 1934 and amendments thereto or similar provisions of any state statutory law or common law; or

(g) for any judgment, fine or penalty which the Company is prohibited by applicable law from paying as indemnity or for any other reason.

4. Termination of the Proceeding.

(a) The termination of any Proceeding, which is covered by this Agreement, by judgment, order or settlement, shall not of itself create a presumption for the purposes of this Agreement that the Indemnitee did not act in good faith and in a manner which he reasonably believed to be in or not opposed to the best interests of the Company and, with respect to any criminal action or proceeding, had reasonable cause to believe that his conduct was unlawful.

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(b) The termination of any proceeding by conviction, or by a plea of nolo contendere or its equivalent, or an entry of an order of probation prior to judgment, creates a rebuttable presumption that the director did not meet the requisite standard of conduct for good faith or otherwise.

5. Enforcement. If a claim or request under this Agreement is not paid by the Company, or on its behalf, within thirty (30) days after a written claim or request has been received by the Company, the Indemnitee may at any time thereafter bring suit against the Company to recover the unpaid amount of the claim or request, and if successful in whole or in part, the Indemnitee shall be entitled to be paid all of the Expenses of prosecuting such suit. The burden of proving that the Indemnitee is not entitled to indemnification for any reason shall be upon the Company.

6. Recoupment. The Company shall have the right to recoup from the Indemnitee the amount of any item or items of Expenses theretofore paid by the Company pursuant to this Agreement, to the extent that such Expenses are not reasonable in nature or amounts; provided, however, that the Company shall have the burden of proving such Expenses to be unreasonable.

7. Subrogation. In the event of payment under this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery of the Indemnitee, who shall execute all papers required and shall do everything that may be necessary to secure such rights, including the execution of such documents necessary to enable the Company effectively to bring suit to enforce such rights.

8. Indemnification of Expenses of Successful Party. Notwithstanding any other provision of this Agreement, to the extent that the Indemnitee has been successful on the merits or otherwise in defense of any Proceeding or in defense of any claim, issue or matter therein, including dismissal without prejudice, the Indemnitee shall be indemnified against any and all Expenses incurred in connection therewith.

9. Partial Indemnification. If the Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a portion of Expenses, but not, however, for the total amount thereof, the Company shall nevertheless indemnify the Indemnitee for the portion of such Expenses to which the Indemnitee is entitled.

10. Indemnification Hereunder Not Exclusive. Nothing herein shall be deemed to diminish or otherwise restrict the Indemnitee's right to indemnification under

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any provision of the Articles of Incorporation or Bylaws of the Company and amendments thereto or under law.

11. Advance of Expenses. Expenses incurred by the Indemnitee in connection with any Proceeding, except the amount of any settlement, shall be paid by the Company in advance upon request of the Indemnitee that the Company pay such Expenses. The Indemnitee hereby undertakes to repay to the Company the amount of any Expenses theretofore paid by the Company to the extent that it is ultimately determined that such Expenses were not reasonable or that the Indemnitee is not entitled to indemnification.

12. Approval of Expenses. No Expenses for which indemnity shall be sought under this Agreement, other than those in respect of judgments and verdicts actually rendered, shall be incurred without the prior written consent of the Company, which consent shall not be unreasonably withheld.

13. Coverage. The provisions of this Agreement shall apply with respect to the Indemnitee's service as a Director and Officer of the Company prior to the date of this Agreement and with respect to all periods of such service after the date of this Agreement, even though the Indemnitee may have ceased to be a Director or Officer of the Company.

14. General Provisions

14.1 Notice of Claim. The Indemnitee, as a condition precedent to his right to be indemnified under this Agreement, shall give to the Company notice in writing as soon as practicable of any claim made against him for which indemnity will or could be sought under this Agreement. Notice to the Company shall be given at its principal office and shall be directed to the President and CEO (or such other address as the Company shall designate in writing to the Indemnitee). Notice shall be deemed duly given when addressed as follows and
(i) when personally delivered, (ii) when transmitted by telecopy, electronic or digital transmission with receipt confirmed, (iii) one day after delivery to an overnight air courier guaranteeing next day delivery, or (iv) upon receipt if sent by certified or registered mail. In each case notice shall be sent to:

If to the Indemnitee:    ______________________

If to the Company:       Kilroy Realty Corporation
                         2250 East Imperial Highway
                         El Segundo, California 90245

                             5

                         Attention: President and CEO
                         Facsimile: (310) 322-5981

14.2 Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of California without giving effect to the principles of conflict of laws thereof.

14.3 Assignment. This Agreement may not be assigned by the Indemnitee, but may be assigned by the Company to any successor to its business and will inure to the benefit and be binding upon any such successor.

14.4 Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original but all of which taken together shall constitute one and the same instrument.

14.5 Severability. The invalidity or unenforceability of any provision or provisions of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement, which shall remain in full force and effect.

14.6 Entire Agreement. This Agreement contains the entire agreement and understanding between the Company and the Indemnitee with respect to the indemnification of the Indemnitee by the Company as contemplated hereby, and no representations, promises, agreements or understandings, written or oral, not herein contained shall be of any force or effect. This Agreement shall not be changed unless in writing and signed by both the Indemnitee and the Board of Directors of the Company.

14.7 The Indemnitee's Acknowledgment. The Indemnitee acknowledges
(a) that he has had the opportunity to consult with independent counsel of his own choice concerning this Agreement, and (b) that he has read and understands the Agreement, is fully aware of its legal effect, and has entered into it freely based on his own judgment.

(Signature Page Follows)

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IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed and signed as of the day and year first above written .

KILROY REALTY CORPORATION,
a Maryland corporation

By_______________________________________
Name:
Title:

KILROY REALTY, L.P.
a Delaware limited partnership

By_______________________________________
Name:
Title:

INDEMNITEE


[NAME]

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EXHIBIT 10.34

NONCOMPETITION AGREEMENT

THIS NONCOMPETITION AGREEMENT (this "Agreement") is dated as of __________, 1997, by and among Kilroy Realty Corporation, a Maryland corporation (the "Company"), Kilroy Realty, L.P., a Delaware limited partnership ("Kilroy Realty, L.P."), and John B. Kilroy, Sr. (the "Director").

WHEREAS, Kilroy Realty, L.P., the Director and certain other parties have entered into an Omnibus Option Agreement, dated as of October 30, 1996 (the "Omnibus Option Agreement"), pursuant to which the Director has transferred all of his right, title and interest in certain office and industrial buildings, the related fee or leasehold real property interests, and the development, management and leasing businesses in connection with therewith (collectively, the "Contributed Properties"), in exchange for a limited partnership interest in Kilroy Realty, L.P.;

WHEREAS, the Company desires the Director to serve, and the Director desires to serve, on the Company's Board of Directors (the "Board") as provided for in the Company's Amended and Restated Articles of Incorporation and Bylaws; and

WHEREAS, the Company and the Director agree that, in connection with the contribution of the Contributed Properties to Kilroy Realty, L.P. and the designation of the Director to serve on the Board, the Director will not engage in competition with the Company and Kilroy Realty, L.P. pursuant to the terms and conditions hereof;

NOW, THEREFORE, in furtherance of the foregoing and in exchange for good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, the parties hereto hereby agree as follows:

1. Noncompetition. (a) For as long as the Director is a member of the Board (or the Board of Directors of any successor to the Company), the Director shall be prohibited from engaging in Competition (as defined below) with the Company, Kilroy Realty, L.P. or any of their respective subsidiaries.

(b) The term "Competition" for purposes of this Agreement shall mean the taking of any of the following actions by the Director: conducting, directly or indirectly, any property development, acquisition or management activity with respect to office and industrial property in the Southern California Area or in any other market in which the Company or any of its subsidiaries owns, develops or manages property, whether such business is conducted by the Director individually or as principal, partner, officer, director, consultant, employee, stockholder or manager of any person, partnership, corporation, limited liability company or any other entity; provided, however, that the term "Competition" shall be deemed to exclude (i) the Director's ownership, management or leasing of the Director's interests in any of the properties listed on Schedule A hereto and any passive ownership interest in real property received in exchange therefor, and (ii) the transfer or exchange of any of the properties listed in the immediately preceding clause
(i), provided that the ownership and activities with respect to any such property received in any exchange otherwise comply with the terms

and conditions of this Agreement and (iii) the Director's activities related solely to the marketing, entitlement, sale, transfer or exchange of the approximately 66-acre site which currently comprises Calabasas Park Centre in the City of Calabasas, California ("Calabasas Park Centre"). For purposes of the previous sentence, the "Southern California Area" shall be deemed to be comprised of the counties of Los Angeles, Orange, Riverside, San Bernardino and Ventura.

(c) Notwithstanding the foregoing, the Director agrees not to sell, assign or otherwise transfer (or cause to be sold, assigned or otherwise transferred) the Director's interest (direct or indirect) in Calabasas Park Centre (or any portion thereof) to any real estate investment trust with a portfolio of existing office or industrial properties (a "Competing REIT") unless such interest is offered first to the Company pursuant to the terms and conditions of the Option Agreement, dated as of the date hereof, by and between Kilroy Realty, L.P. and Kilroy Calabasas Associates, as amended from time to time.

2. Specific Performance. The Director acknowledges that in the event of breach by the Director of the terms of Section 1 hereof, the remedies at law available to the Company and to Kilroy Realty, L.P. may be inadequate and the Company and Kilroy Realty, L.P. shall be entitled to institute legal proceedings to enforce the specific performance of this Agreement by the Director and to enjoin the Director from any further violation of Section 1 hereof and to exercise such remedies cumulatively or in conjunction with all other rights and remedies provided by law and not otherwise limited by this Agreement.

3. Attorneys Fees. If any legal action, arbitration or other proceeding is brought for the enforcement of this Agreement, or because of an alleged dispute, breach or default in connection with any of the provisions of this Agreement, the prevailing party shall be entitled to recover reasonable attorneys' fees and other costs incurred in that action or proceeding, including any appeal of such action or proceeding, in addition to any other relief to which that party may be entitled.

4. Severability. Any provision of this Agreement which is deemed invalid, illegal or unenforceable in any jurisdiction shall, as to that jurisdiction and subject to this paragraph, be ineffective to the extent of such invalidity, illegality or unenforceability, without affecting in any way the remaining provisions hereof in such jurisdiction or rendering that any other provisions of this Agreement invalid, illegal or unenforceable in any other jurisdiction. If any covenant should be deemed invalid, illegal or unenforceable because its scope is considered excessive, such covenant shall be modified so that the scope of the covenant is reduced only to the minimum extent necessary to render the modified covenant valid, legal and enforceable.

5. Governing Law. This Agreement shall be governed, construed, interpreted and enforced in accordance with the laws of the State of California, without regard to the conflict of laws principles thereof.

6. Entire Agreement. This Agreement contains the entire agreement and understanding between the Company, Kilroy Realty, L.P. and the Director with respect to the subject matter hereof, and no representations, promises, agreements or understandings, written or oral, not herein contained shall be of any force or effect. This Agreement shall not be changed unless in writing and signed by both the Director and the Board of Directors of the Company.

2

7. Assignment. This Agreement may not be assigned by the Director, but may be assigned by the Company and Kilroy Realty, L.P. to any successor to its business and will inure to the benefit of and be binding upon any such successor.

8. Notice. For the purposes of this Agreement, notices, demands and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given (i) when personally delivered, (ii) when transmitted by telecopy, electronic or digital transmission with receipt confirmed, (iii) one day after delivery to a nationally recognized overnight air courier guaranteeing next day delivery, or (iv) upon receipt if sent by certified or registered mail. In each case, notice shall be sent to:

If to the Director:              John B. Kilroy, Sr.
                                 [Address]


If to the Company
and to Kilroy Realty, L.P.:      Kilroy Realty Corporation
                                 2250 East Imperial Highway
                                 El Segundo, California 90245
                                 Attention:  Secretary
                                 Facsimile:  (310) 322-5981

9. Counterparts. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original but all of which together will constitute one and the same instrument.

10. The Director's Acknowledgment. The Director acknowledges (a) that he has had the opportunity to consult with independent counsel of his own choice concerning this Agreement, and (b) that he has read and understands the Agreement, is fully aware of its legal effect, and has entered into it freely based on his own judgment.

(Signature Page Follows)

3

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date and year first above written.

KILROY REALTY CORPORATION

By:

John B. Kilroy, Jr.


President and Chief Executive Officer

KILROY REALTY, L.P.

By Kilroy Realty Corporation, its
general partner

By:

John B. Kilroy, Jr.


President and Chief Executive Officer

John B. Kilroy, Sr.


4

EXHIBIT 10.35

NONCOMPETITION AGREEMENT

THIS NONCOMPETITION AGREEMENT (this "Agreement") is dated as of __________, 1997, by and among Kilroy Realty Corporation, a Maryland corporation (the "Company"), Kilroy Realty, L.P., a Delaware limited partnership ("Kilroy Realty, L.P."), and John B. Kilroy, Jr. (the "Executive"). Capitalized terms used herein but not otherwise defined herein shall have the meaning ascribed to them in the Employment Agreement (as defined below).

WHEREAS, Kilroy Realty, L.P., the Executive and certain other parties have entered into an Omnibus Option Agreement, dated as of October 30, 1996 (the "Omnibus Option Agreement"), pursuant to which the Executive has transferred all of his right, title and interest in certain office and industrial buildings, the related fee or leasehold real property interests, and the development, management and leasing businesses in connection with therewith (collectively, the "Contributed Properties"), in exchange for a limited partnership interest in Kilroy Realty, L.P.;

WHEREAS, concurrently with the execution of this Agreement, the Company, Kilroy Realty, L.P. and the Executive have entered into an Employment Agreement, pursuant to which the Company and Kilroy Realty, L.P. have agreed to employ the Executive, and the Executive has agreed to be employed by the Company, as its President and Chief Executive Officer, and by Kilroy Realty, L.P., as its President and Chief Executive Officer (the "Employment Agreement"); and

WHEREAS, the Company, Kilroy Realty, L.P. and the Executive agree that, in connection with the contribution of the Contributed Properties to Kilroy Realty, L.P. and the execution of the Employment Agreement and the Executive's employment, the Executive will not engage in competition with the Company and Kilroy Realty, L.P. pursuant to the terms and conditions hereof;

NOW, THEREFORE, in furtherance of the foregoing and in exchange for good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, the parties hereto hereby agree as follows:

1. Noncompetition. (a) At any time during the Employment Period and for one year thereafter, and thereafter continue for so long as the Executive is a member of the Company's Board of Directors (or the Board of Directors of any successor to the Company), the Executive shall be prohibited from engaging in Competition (as defined below) with the Company, Kilroy Realty, L.P. or any of their respective subsidiaries.

(b) The term "Competition" for purposes of this Agreement shall mean the taking of any of the following actions by the Executive: (A) conducting, directly or indirectly, any property development, acquisition, sale or management activity, whether such business is conducted by the Executive individually or as principal, partner, officer, director, consultant, employee, stockholder or manager of any person, partnership, corporation, limited liability company or any other entity; and (B) owning interests in real property which are competitive, directly or indirectly, with any business carried on, directly or through one or more subsidiaries or otherwise, by the Company; provided, however, that the term "Competition" shall be deemed to exclude (i) the Executive's ownership, management or leasing and any of the properties listed on Schedule A hereto, including, without limitation, any passive ownership interest in real property received in exchange therefor, (ii) the transfer or exchange of any of the properties listed in the immediately preceding clause (i), provided

that the ownership and activities with respect to any such property received in any exchange otherwise comply with the terms and conditions of this Agreement,
(iii) the Executive's ownership of a passive interest in real property which is not competitive, directly or indirectly, with any business carried on, directly or through one or more subsidiaries or otherwise, by the Company and (iv) the Executive's activities related solely to the marketing, entitlement, sale, transfer and exchange of the approximately 66-acre site which currently comprises Calabasas Park Centre in the City of Calabasas, California ("Calabasas Park Centre").

(c) Notwithstanding the foregoing, the Executive agrees not to sell, assign or otherwise transfer (or cause to be sold, assigned or otherwise transferred) the Executive's interest (direct or indirect) in Calabasas Park Centre (or any portion thereof) to any real estate investment trust with a portfolio of existing office and industrial properties (a "Competing REIT") unless such interest is offered first to the Company pursuant to the terms and conditions of the Option Agreement, dated as of the date hereof, by and between Kilroy Realty, L.P. and Kilroy Calabasas Associates, as amended from time to time.

(d) In the event that the Executives employment is terminated pursuant to Sections 5.4, 5.5 or 5.7 of the Employment Agreement, the prohibitions and restrictions set forth in Section 1(a) of this Agreement shall apply only for so long as the Executive is a member of the Company's Board of Directors. Except as set for in this Section 1(d), nothing herein shall relieve or limit Executive's obligation to comply with the terms of this Agreement and the Employment Agreement.

2. Specific Performance. The Executive acknowledges that in the event of breach by the Executive of the terms of Section 1 hereof, the Company's and Kilroy Realty, L.P.'s remedies at law may be inadequate and the Company and Kilroy Realty, L.P. shall be entitled to institute legal proceedings to enforce the specific performance of this Agreement by the Executive and to enjoin the Executive from any further violation of Section 1 hereof and to exercise such remedies cumulatively or in conjunction with all other rights and remedies provided by law and not otherwise limited by this Agreement.

3. Attorneys Fees. If any legal action, arbitration or other proceeding is brought for the enforcement of this Agreement, or because of an alleged dispute, breach or default in connection with any of the provisions of this Agreement, the prevailing party shall be entitled to recover reasonable attorneys' fees and other costs incurred in that action or proceeding, including any appeal of such action or proceeding, in addition to any other relief to which that party may be entitled.

4. Severability. Any provision of this Agreement which is deemed invalid, illegal or unenforceable in any jurisdiction shall, as to that jurisdiction and subject to this paragraph, be ineffective to the extent of such invalidity, illegality or unenforceability, without affecting in any way the remaining provisions hereof in such jurisdiction or rendering that any other provisions of this Agreement invalid, illegal or unenforceable in any other jurisdiction. If any covenant should be deemed invalid, illegal or unenforceable because its scope is considered excessive, such covenant shall be modified so that the scope of the covenant is reduced only to the minimum extent necessary to render the modified covenant valid, legal and enforceable.

5. Governing Law. This Agreement shall be governed, construed, interpreted and enforced in accordance with the laws of the State of California, without regard to the conflict of laws principles thereof.

6. Entire Agreement. This Agreement contains the entire agreement and understanding between the Company, Kilroy Realty, L.P. and the Executive with respect to the subject matter hereof, and no representations, promises, agreements or understandings, written or oral, not herein contained shall be of any force or effect. This Agreement shall not be changed unless in writing and signed by both the Executive and the Board of Directors of the Company.

7. Assignment. This Agreement may not be assigned by the Executive, but may be assigned by the Company and Kilroy Realty, L.P. to any successor to its business and will inure to the benefit of and be binding upon any such successor.

8. Notice. For the purposes of this Agreement, notices, demands and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given (i) when personally delivered, (ii) when transmitted by telecopy, electronic or digital transmission with receipt confirmed, (iii) one day after delivery to a nationally recognized overnight air courier guaranteeing next day delivery, or (iv) upon receipt if sent by certified or registered mail. In each case, notice shall be sent to the Executive, the Company or Kilroy Realty, L.P., as the case may be, at the address set forth next to the Executive or the Company, as the case may be, in
Section 9.2 of the Employment Agreement.

9. Counterparts. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original but all of which together will constitute one and the same instrument.

10. The Executive's Acknowledgment. The Executive acknowledges (a) that he has had the opportunity to consult with independent counsel of his own choice concerning this Agreement, and (b) that he has read and understands the Agreement, is fully aware of its legal effect, and has entered into it freely based on his own judgment.

(Signature Page Follows)

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IN WITNESS WHEREOF, the parties have executed this Agreement as of the date and year first above written.

KILROY REALTY CORPORATION

By:

Richard E. Moran Jr.

Executive Vice President,
Chief Financial Officer and
Secretary

KILROY REALTY, L.P.

By Kilroy Realty Corporation, its
general partner

By:

Richard E. Moran Jr.

Executive Vice President,
Chief Financial Officer and
Secretary

John B. Kilroy, Jr.



EXHIBIT 23.3

REPORT AND CONSENT OF INDEPENDENT AUDITORS

We consent to the use in this Registration Statement of Kilroy Realty Corporation on Form S-11 of our reports on Kilroy Realty Corporation, dated October 25, 1996, Kilroy Group ("Predecessor Affiliates"), dated December 20, 1996, and the Acquisition Properties dated December 20, 1996, appearing in this Registration Statement, and to the references to us under the captions "Selected Combined Financial Data" and "Experts."

Our audits of the financial statements referred to in our aforementioned report also included the combined financial statement schedule of Kilroy Group listed in Item 35. This combined financial statement schedule is the responsibility of the management of Kilroy Group. Our responsibility is to express an opinion based on our audits. In our opinion, such financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presents fairly in all material respects the information set forth therein.

/s/ DELOITTE & TOUCHE LLP
Los Angeles, California



January 23, 1997


EXHIBIT 23.4

CONSENT OF ROBERT CHARLES LESSER & CO.

To Kilroy Realty Corporation:

As experts in real estate consulting and urban economics, we hereby consent to the use of our Regional Economic Overview and Market Analysis dated January 2, 1997 and to all references to our firm included in or made a part of this Registration Statement.

                                           /s/ Robert Charles Lesser & Co.
                                          -------------------------------------
                                               Robert Charles Lesser & Co.

Los Angeles, California



January 23, 1997


EXHIBIT 23.5

CONSENT OF DIRECTOR NOMINEE

The undersigned hereby consents to the reference of the undersigned as a director nominee of Kilroy Realty Corporation (the "Company") in the Company's Registration Statement on Form S-11.

                                             /s/ William P. Dickey, Esq.
                                          -------------------------------------
                                                 William P. Dickey, Esq.



January 23, 1997


EXHIBIT 23.6

CONSENT OF DIRECTOR NOMINEE

The undersigned hereby consents to the reference of the undersigned as a director nominee of Kilroy Realty Corporation (the "Company") in the Company's Registration Statement on Form S-11.

                                                 /s/ Matthew J. Hart
                                          -------------------------------------
                                                     Matthew J. Hart



January 23, 1997


EXHIBIT 23.7

CONSENT OF DIRECTOR NOMINEE

The undersigned hereby consents to the reference of the undersigned as a director nominee of Kilroy Realty Corporation (the "Company") in the Company's Registration Statement on Form S-11.

                                              /s/ Dale F. Kinsella, Esq.
                                          -------------------------------------
                                                 Dale F. Kinsella, Esq.



January 23, 1997