Document:

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                                                                   EXHIBIT 10.17

                  AMENDED AND RESTATED ENDORSEMENT AGREEMENT

This Amended and Restated Endorsement Agreement is entered into as of this 15
day of March, 2000, between Carbite, Inc., a California corporation located at
6330 Nancy Ridge Dr., Suite 107, San Diego, CA 92121 which is a wholly-owned
subsidiary of Carbite Golf, Inc., a British Columbia corporation (hereinafter
collectively referred to as "Carbite") and Fuzzy Zoeller Productions, Inc. an
Indiana corporation located at PO Box 1407, New Albany, IN 47151 (hereinafter
referred to as "Zoeller").

Whereas, Zoeller represents it owns all the rights to the Fuzzy Zoeller name
and likeness who is known through the world as a professional golfer; and

Whereas, Carbite manufactures and distributes products world wide; and

Whereas, Carbite is desirous of acquiring the exclusive rights to use Zoeller's
name and likeness in promoting the company and products of Carbite, or other
brands to be acquired by Carbite;

Whereas, the parties entered into an Endorsement Agreement dated as of August
20, 1999 which they now desire to amend and restate;

Therefore, in consideration of the Agreement herein and for other good and
valuable consideration, it is agreed to as follows:

1.   Zoeller agrees to allow the unlimited worldwide use of Zoeller's name and
     likeness in the promotion of Carbite products under the Carbite name or
     other brand to be acquired. The use of the Zoeller image and direct quotes
     attributed to Zoeller will be submitted to Zoeller in advance for approval
     and such approval will not be unreasonably withheld. Carbite agrees not to
     use Zoeller in the promotion of specific products that will violate the
     endorsement agreements currently in place.

2.   Zoeller will provide a link from www.fuz.com to domains that Carbite will
     designate. Carbite will provide a link from Carbite domains to www.fuz.com.
     Zoeller will be available occasionally for on-line chats, providing time
     and schedule permit.

3.   Zoeller will carry a Carbite or other brand to be acquired golf bag while
     competing on the PGA and Senior PGA TOUR, while attending corporate outings
     and all golf functions and activities in general and continue to conduct
     himself in a professional manner.
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4.   Zoeller will use his best efforts to attempt to use products by Carbite or
     other brands to be acquired. At a minimum, Zoeller will use 10 Carbite or
     other brand to be acquired clubs including wedges and putter. Carbite
     agrees to allow Zoeller to continue to play the Daiwa 153 irons until such
     time as Carbite has an agreement with Daiwa for continued use of the
     trademark or Carbite can provide an acceptable replacement. Zoeller will
     wear a Carbite or company to be acquired shirt for advertising or
     promotional purposes.

5.   Zoeller will occasionally advise and consult with Carbite on golf club
     design.

6.   Zoeller will provide a maximum of eight (8) days per contract year (dates,
     times, locations and schedule permitting) for sales and marketing of
     Carbite products or other brands to be acquired including filming
     infomercials, trade shows and customer meetings. Carbite agrees to the best
     of its ability to have as many of these dates as possible at Covered Bridge
     Golf Course.

7.   Zoeller will use his best efforts to aid Carbite in corporate development.
     Carbite anticipates the need to use Zoeller to periodically meet with
     investment bankers, investors and shareholders among others to develop and
     expand relationships that will benefit the company. These meetings will be
     arranged in advance to meet the time and schedule of Zoeller.

8.   As compensation, Carbite agrees to pay Zoeller the following in cash and
     common stock of Carbite Golf Inc:

                                             Cash      Stock     Total
                                                       Value
     Contract Year 1     (8/20/99-2/19/00)   $ 50,000  $ 88,000  $138,000

     Contract Year 2     (2/20/00-2/19/01)   $200,000  $100,000  $300,000

     Contract Year 3     (2/20/01-2/19/02)   $200,000  $100,000  $300,000

     Contract Year 4     (2/20/02-2/19/03)   $275,000  $225,000  $500,000

     Contract Year 5     (2/20/03-2/19/04)   $300,000  $250,000  $550,000

     Contract Year 6     (2/20/04-2/19/05)   $325,000  $250,000  $575,000

     a. The cash portion of such compensation shall be paid following schedule:

        (i)    For Contract Year 1, $25,000 on the execution of this agreement
               and $25,000 90 days thereafter.

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     (ii)  For Contract Years 2-6, one-quarter increments shall be due on
           February 20/th/, May 20/th/, August 20/th/ and October 20/th/ of the
           Contract Year.

b.   The stock portion of such compensation shall be governed by the following:

     (i)   For Contract Year 1, the shares shall be issued at the end of
           Contract Year 1 and shall be calculated at $.45 per share.

     (ii)  For Contract Years 2-6, the shares to be issued shall be calculated
           semi-annually as follows:

               50% of the dollar value of stock to be issued in each Contract
               Year shall be calculated at August 20/th/ of each Contract year
               based on the weighted average closing sale price of the stock
               during the ten trading days prior to August 20/th/ of that
               Contract Year.

               The remaining 50% shall be calculated at the end of each Contract
               Year based on the weighted average closing sale price of the
               stock during the ten trading days prior to the last day of that
               Contract Year.

     (iii) Such calculations shall be based on trading on the Canadian Venture
           Exchange during such time as the stock is traded there or, if the
           stock ceases to be traded on the Canadian Venture Exchange, on such
           other stock exchange on which it is traded. If the shares are
           actively traded on more than one exchange, the calculations shall be
           based on an average of the weighted average closing sale price on
           those exchanges.

     (iv)  If, in any Contract Year, the weighted average closing sale price
           is below $.45 U.S., Carbite may elect to pay Zoeller in cash.

     (v)   If the shares to be issued to Zoeller during any Contract Year shall
           cause the cumulative number of shares issued to Zoeller under this
           Agreement to exceed 4.9% of the issued and outstanding shares of
           Carbite, Carbite may elect to cap the shares at 4.9% and pay the
           difference in cash.

     (vi)  Carbite shall take all steps necessary to cause the shares due
           Zoeller for each Contract Year to be issued within thirty (30) days
           after the calculation date for each share issuance.

     (vii) Any shares issued pursuant to this Agreement, once issued, will not
           have been registered under the United States Securities Act of 1933
           (the "Act") or the securities laws of any state of the United States,
           and will be "Restricted Securities" as the term is defined in Rule
           144 under the Act. The shares, once issued, may not be offered for
           sale, sold or otherwise

                                       3
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               transferred within the United States except pursuant to an
               effective Registration Statement under the Act and any applicable
               state securities laws, or pursuant to an exemption from
               registraton under the Act, the availability of which must be
               established to the satisfaction of the Company.

     (viii)    Zoeller will execute an Investment Representation Agreement in
               the form attached hereto as Exhibit A.

     (ix)      If Carbite subdivides or consolidates its stock, pays a stock
               dividend (other than in the ordinary course), or conducts a
               rights offering to its shareholders, then the number of shares to
               be issued Zoeller and the minimum price in Paragraph 8(b)(i)
               shall be increased or decreased proportionately.

     (x)       Carbite stock in currently traded on the Canadian Venture
               Exchange. The shares issued to Zoeller under this Agreement will
               be subject to a hold period under the Securities Act (British
               Columbia), the rules and policies of the Canadian Venture
               Exchange, and/or other applicable securities laws.

9.   Carbite agrees to pay all reasonable and necessary expenses involved in
     sales and marketing or corporate development appearances for Zoeller
     including first class travel hotel and meal expenses.

10.  Zoeller will compete in a minimum of 15 PGA tournaments per year. If for
     whatever reason Zoeller plays in less than 15 PGA tournaments in any year,
     the compensation will be reduced by dividing the compensation by 15 and
     multiplying by the number of events played.

11.  Carbite can terminate the contract for the following reasons:

     a.   Zoeller is unable to compete due to serious injury, dies, or fails to
          conduct himself in a professional manner consistent with the standards
          of the PGA Tour.

     b.   The gross sales (net of returns) of Carbite, Inc., in calendar year
          2001, do not exceed $25,000,000.

12.  Carbite will indemnify Zoeller from any claims and damages arising from the
     use of the endorsed product or the endorsement of the products or the
     advertising of Carbite products.

13.  This agreement shall be governed by the laws of the State of California.
     Any disputes between the parties that cannot be resolved will be determined
     by arbitration

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     according with the American Arbitration Association. The prevailing party
     shall be entitled to reasonable attorneys' fees, costs and necessary
     disbursements.

14.  The contact period shall commence on August 20, 1999 and conclude on August
     20, 2004 unless sooner terminated, extended or renewed in accordance with
     this agreement.

15.  Nothing contained in this Agreement shall be construed as establishing an
     employer/employee relationship between Carbite and Zoeller. There shall be
     no withholdings for tax purposes from any payments due to Zoeller form
     Carbite.

16.  Neither party shall have any right to grant sublicenses or to otherwise
     assign any of its rights or obligations in this Agreement without the
     express written consent of the other party.

17.  All notices or statements shall be sent via overnight express to the
     following addresses.

     Carbite Inc. or Carbite Golf, Inc.          Fuzzy Zoeller Productions, Inc.
     9985 Huennekens St.                         PO Box 1407
     San Diego, CA 92121                         New Albany, IN 47151
     Attention: John Pierandozzi                 Attention: Dave Lobeck

18.  This Agreement is subject to regulatory approval by the Canadian Venture
     Exchange. Carbite shall promptly take all reasonable steps to secure such
     regulatory approval.

19.  Carbite and Zoeller shall execute any and all such further deeds, documents
     and assurances and shall do any and all such further and other things as
     may be necessary to implement and carry out the intent of this Agreement.

20.  The provisions herein contained constitute the entire agreement between the
     parties and supersede all previous understandings, communications,
     representations and agreements, whether written or verbal, between the
     parties with respect to the subject matter of this Agreement.

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21.  All dollar amounts referred to in this Agreement have been expressed in
     United States currency, unless otherwise indicated.

In Witness, the parties in this Agreement have caused it to be executed as of
the 15th day of March, 2000.

Date:  3/15/00                          CARBITE INC.
     -------------------------

                                        By: /s/ John R. Pierandozzi
                                            --------------------------------

Date:  3/15/00                          CARBITE GOLF, INC.
     -------------------------

                                        By: /s/ John R. Pierandozzi
                                            --------------------------------
Date:  3/15/00                          FUZZY ZOELLER PRODUCTIONS, INC.
     -------------------------

                                        By: /s/ Dave Lobeck
                                            --------------------------------
                                            Fuzzy Zoeller Productions, Inc.

                                       6EXHIBIT 4.2

Exhibit 4.2

CHELSEA GCA REALTY PARTNERSHIP, L.P.

as ISSUER

and

CHELSEA GCA REALTY, INC.

TO

STATE STREET BANK AND TRUST COMPANY

as TRUSTEE

FIFTH SUPPLEMENTAL INDENTURE

DATED AS OF _________________, 2000

________________________

$50,000,000 8 3/8% NOTES DUE 2005

$50,000,000 8 5/8% NOTES DUE 2009

SUPPLEMENT TO INDENTURE

DATED AS OF JANUARY 23, 1996 AMONG

CHELSEA GCA REALTY PARTNERSHIP, L.P. (AS ISSUER),

CHELSEA GCA REALTY, INC. AND

STATE STREET BANK AND TRUST COMPANY (AS TRUSTEE)

          
FIFTH SUPPLEMENTAL INDENTURE, among CHELSEA GCA REALTY PARTNERSHIP, L.P., a
limited partnership duly organized and existing under the laws of Delaware
(hereinafter called the "Issuer"), having its principal executive office located
at 103 Eisenhower Parkway, Roseland, New Jersey 07068, CHELSEA GCA REALTY, INC.,
a corporation duly organized and existing under the laws of Maryland
(hereinafter called the "General Partner"), and STATE STREET BANK AND TRUST
COMPANY, a Massachusetts trust company (hereinafter called the "Trustee"),
having its Corporate Trust Office located at 2 Avenue de Lafayette, 6th Floor,
Boston, Massachusetts 02111 (this "Supplemental Indenture").

Recitals

          
WHEREAS, the Issuer and Chelsea GCA Realty, Inc. executed and delivered the
Indenture (the "Original Indenture"), dated as of January 23, 1996, to the
Trustee in contemplation of the issuance from time to time of debt securities
evidencing the Issuer's senior unsecured indebtedness.

          
WHEREAS, Section 301 of the Original Indenture provides that by means of a
supplemental indenture, the Issuer may create one or more series of its debt
securities and establish the form and terms and conditions thereof.

          
WHEREAS, the Issuer intends by this Supplemental Indenture to (i) create two
series of Issuer's debt securities, $50,000,000 aggregate principal amount of
8 3/8% Notes due 2005 (the "2005 Notes") and $50,000,000 aggregate principal
amount of 8 5/8% Notes due 2009 (the "2009 Notes," and together with the 2005
Notes, the "Notes"); and (ii) establish the form and the terms and conditions of
such Notes.

          
WHEREAS, the General Partner, on behalf of the Issuer and itself, has
approved the creation of the Notes and the form, terms and conditions
thereof.

          
WHEREAS, the consent of Holders to the execution and delivery of this
Supplemental Indenture is not required, and all other actions required to be
taken under the Original Indenture with respect to this Supplemental Indenture
have been taken.

          
NOW, THEREFORE IT IS AGREED:

ARTICLE ONE

DEFINITIONS, CREATION, FORM AND TERMS AND CONDITIONS OF THE DEBT SECURITIES

          
Section 1.01. Definitions. Capitalized terms used in this Supplemental
Indenture and not otherwise defined shall have the meanings ascribed to them in
the Original Indenture. In addition, the following terms shall have the
following meanings to be equally applicable to both the singular and the plural
forms of the terms defined:

          
"Affiliate" means, with respect to any specified Person, (i) any other
Person directly or indirectly controlling or controlled by or under direct or
indirect common control with such specified Person or (ii) any other Person that
owns, directly or indirectly, 10% or more of such specified Person's Voting
Stock or any executive officer or director of any such specified Person or other
Person or, with respect to any natural Person, any Person having a relationship
with such Person by blood, marriage or adoption not more remote than first
cousin. For the purposes of this definition, "control", when used with respect
to any specified Person, means the power to direct the management and policies
of such Person, directly or indirectly, whether through the ownership of Voting
Stock, by contract or otherwise; and the terms "controlling" and "controlled"
have meanings correlative to the foregoing.

          
"Default" means any event that after notice or passage of time or both
would be an Event of Default.

          
"Disinterested Director" means, with respect to any transaction or series
of transactions in respect of which the Board of Directors is required to
approve under the terms hereof or of the Original Indenture, a member of the
Board of Directors who does not have any material direct or indirect financial
interest in or with respect to such transaction or series of
transactions.

          
"DTC" means The Depository Trust Company.

          
"Global Note" means a single fully-registered global note in book-entry
form, without coupons, substantially in the form of Exhibit A (with respect to
the 2005 Notes) and Exhibit B (with respect to the 2009 Notes) attached
hereto.

          
"Indenture" means the Original Indenture as supplemented by this Fifth
Supplemental Indenture.

          
"Intercompany Indebtedness" means Indebtedness of the Issuer or any
Restricted Subsidiary owing to any Restricted Subsidiary or the Issuer; provided
that any such Indebtedness is made pursuant to an intercompany note and is
subordinated in payment to the Notes; provided further that any disposition,
pledge or transfer of any such Indebtedness to a Person (other than the Issuer
or a Restricted Subsidiary) shall be deemed to be an incurrence of such
Indebtedness by the Issuer or a Restricted Subsidiary, as the case may be, with
such Indebtedness no longer being deemed to be Intercompany
Indebtedness.

          
"Issuance Date" means the closing date for the sale and original issuance
of the Notes.

          
"Original Notes" means the debt securities issued by the Issuer pursuant
to the Original Supplemental Indenture.

          
"Original Supplemental Indenture" means the fourth supplemental indenture
dated as of August 16, 2000, to the Indenture.

          
"Restricted Subsidiary" means any Subsidiary of the Issuer, whether
existing on or after the date of this Supplemental Indenture, unless such
Subsidiary of the Issuer is an Unrestricted Subsidiary or is designated as an
Unrestricted Subsidiary pursuant to the terms of this Supplemental
Indenture.

          
"Unrestricted Subsidiary" means (a) any Subsidiary that at the time of
determination shall be an Unrestricted Subsidiary (as designated by the Board of
Directors, as provided below) and (b) any Subsidiary of an Unrestricted
Subsidiary. The Board of Directors may designate any Subsidiary (including any
newly acquired or newly formed Subsidiary) to be an Unrestricted Subsidiary so
long as (i) neither the Issuer nor any other Subsidiary is directly or
indirectly liable for any Indebtedness of such Subsidiary, (ii) no default with
respect to any Indebtedness of such Subsidiary would permit (upon notice, lapse
of time or otherwise) any holder of any other Indebtedness of the Issuer or any
other Subsidiary to declare a default on such other Indebtedness or cause the
payment thereof to be accelerated or payable prior to its stated maturity, (iii)
neither the Issuer nor any other Subsidiary has a contract, agreement,
arrangement, understanding or obligation of any kind, whether written or oral,
with such Subsidiary other than those that might be obtained at the time from
persons who are not Affiliates of the Issuer and (iv) neither the Issuer nor any
other Subsidiary has any obligation (1) to subscribe for additional shares of
Capital Stock or other equity interest in such Subsidiary or (2) to maintain or
preserve such Subsidiary's financial condition or to cause such Subsidiary to
achieve certain levels of operating results. Any such designation by the Board
of Directors shall be evidenced to the Trustee by filing a board resolution with
the Trustee giving effect to such designation. The Board of Directors may
designate any Unrestricted Subsidiary as a Restricted Subsidiary if immediately
after giving effect to such designation, there would be no Default or Event of
Default under this Indenture and the Issuer could incur $1.00 of additional
Indebtedness (other than Intercompany Indebtedness) pursuant to Section 1011 of
the Original Indenture.

          
Section 1.02. Creation of the Debt Securities. In accordance with Section
301 of the Original Indenture, the Issuer hereby creates the Notes as two
separate series of its debt securities issued pursuant to the Indenture. The
Notes shall be issued in two separate series, each series in an aggregate
principal amount not to exceed $50,000,000, except for Securities authenticated
and delivered upon registration of transfer of, or in exchange for, or in lieu
of, other Securities of the series pursuant to Section 304, 305, 306, 905 or
1107 of the Original Indenture.

          
Section 1.03. Form of the Debt Securities. The Notes will be represented
by separate fully-registered global notes in book-entry form, without coupons,
registered in the name of the nominee of DTC. The 2005 Notes and the 2009 Notes
shall be in the form of Exhibit A and Exhibit B, respectively, attached hereto.
So long as DTC, or its nominee, is the registered owner of the Global Notes, DTC
or its nominee, as the case may be, will be considered the sole owner or holder
of the Notes represented by such Global Notes for all purposes under the
Indenture. Ownership of beneficial interests in the Global Notes will be shown
on, and transfers thereof will be effected only through, records maintained by
DTC (with respect to beneficial interests of participants) or by participants or
persons that hold interests through participants (with respect to beneficial
interests of beneficial owners).

          
Section 1.04. Terms and Conditions of the Debt Securities. The terms of
the Notes are set forth in the form of Notes attached hereto as Exhibit A and
Exhibit B. In addition, the Notes shall be governed by all the terms and
conditions of the Original Indenture, as supplemented by this Fifth Supplemental
Indenture, and in particular, the following provisions shall be terms of the
Notes:

          (a)
   Payment of Principal, Premium if any, and Interest.
Principal, premium, if any, and interest payments on interests represented by
the Global Notes will be made to DTC or its nominee, as the case may be, as the
registered owner of such Global Notes. All payments of principal, premium, if
any, and interest in respect of the Notes will be made by the Issuer in
immediately available funds.

          (b)
   Inapplicability of Guarantee. The Notes will not be
Guaranteed Securities pursuant to the Original Indenture and the Guarantee set
forth in Article Sixteen, Section 1601 of the Original Indenture shall not be
applicable to the Notes.

          (c)
   Additional Covenants. In addition to the covenants set
forth in the Original Indenture, the Issuer hereby further covenants as
follows:

	  	         
 (i)   Limitation on Consolidation, Merger, etc. The
Issuer will not consolidate with or merge with or into any Person or sell,
convey, transfer, lease or otherwise dispose of all or substantially all of its
assets to any other Person unless after giving pro forma effect to the
consolidation, merger, sale, conveyance, transfer, lease or other disposition,
the Issuer or successor entity could incur at least $1.00 of Indebtedness (other
than Intercompany Indebtedness) in accordance with the covenant set forth in
Section 1011 of the Original Indenture.

	  	         
 (ii)   Limitation on Incurrence of Indebtedness. The
Issuer will not allow any Restricted Subsidiary to incur any Indebtedness other
than Intercompany Indebtedness.

	  	         
 (iii)   Limitation on Distributions. The Issuer will
not make any distribution, by reduction of capital or otherwise (other than
distributions payable in securities evidencing interests in the Issuer's capital
for the purpose of acquiring interests in real property or otherwise) unless,
immediately after giving pro forma effect to such distribution, the Issuer could
incur at least $1.00 of Indebtedness (other than Intercompany Indebtedness) in
accordance with the covenant set forth in Section 1011 of the Original
Indenture; provided, however, that the foregoing, limitation shall not apply to
any distribution or other action which is necessary to maintain the General
Partner's status as a REIT under the Code, if the aggregate principal amount of
all outstanding Indebtedness of the General Partner and the Issuer on a
consolidated basis at such time is less than 60% of Adjusted Total
Assets.

	  	         
 (iv)   Limitation on Transactions with Affiliates.
The Issuer shall not, and shall not permit any Subsidiary to, directly or
indirectly, enter into or suffer to exist any transaction or series of related
transactions (including, without limitation, the sale, purchase, exchange or
lease of assets, property or services) with, or for the benefit of, any
Affiliate of the Issuer (other than the Issuer or a wholly-owned Subsidiary of
the Issuer) unless (a) such transaction or series of related transactions is on
terms that are no less favorable to the Issuer or such Subsidiary, as the case
may be, than those that could have been obtained in an arm's-length transaction
with unrelated third parties who are not Affiliates, (b) with respect to any
transaction or series of related transactions involving aggregate consideration
equal to or greater than $5.0 million, the Issuer shall have delivered an
Officer's Certificate to the Trustee certifying that such transaction or series
of related transactions complies with clause (a) above and such transaction or
series of related transactions has been approved by a majority of the
Disinterested Directors of the Board of Directors of the General Partner, or in
the event no members of the Board of Directors of the General Partner are
Disinterested Directors with respect to any transaction or series of
transactions included in this clause (b), the Issuer has obtained a written
opinion from a nationally recognized investment banking firm to the effect such
transaction or series of related transactions is fair to the Issuer or such
Subsidiary, as the case may be, from a financial point of view and (c) with
respect to any transaction or series of related transactions including aggregate
consideration in excess of $15.0 million, the Issuer shall obtain an opinion
from a nationally recognized investment banking firm as described above;
provided, however, that this provision shall not restrict (1) the Issuer from
paying reasonable and customary regular compensation and fees to directors of
the General Partner who are not employees of the General Partner or (2) the
payment of compensation (including stock options and other incentive
compensation) to officers and other employees.

	  	         
 (v)   Limitation on Dividends and Other Payment
Restrictions Affecting Restricted Subsidiaries. Tile Issuer shall not, and
shall not permit any Restricted Subsidiary to, directly or indirectly, create or
otherwise cause or suffer to exist or become effective any encumbrance or
restriction of any kind on the ability of any Restricted Subsidiary to (a) pay
dividends, in cash or otherwise, or make any other distributions on or in
respect of its Capital Stock, (b) pay any Indebtedness owed to the Issuer or any
other Subsidiary, (c) make investments, loans or advances to the Issuer or any
other Subsidiary, (d) transfer any of its properties or assets to the Issuer or
any other Subsidiary or (e) guarantee any Indebtedness of the Issuer or any
other Subsidiary.

	  	         
 (vi)   Limitation on Sale of Capital Stock of Restricted
Subsidiaries. The Issuer (a) shall not permit any Restricted Subsidiary to
issue any Capital Stock (other than to the Issuer or a Restricted Subsidiary)
and (b) shall not permit any Person (other than the Issuer or a Restricted
Subsidiary) to own any Capital Stock of any Restricted Subsidiary; provided,
however, that foregoing shall not prohibit the issuance and sale of all, but not
less than all, of the issued and outstanding Capital Stock of any Subsidiary
owned by the Issuer or any Subsidiary in compliance with the other provisions of
this Supplemental Indenture and the Original Indenture.

          
Section 1.05. Amendment to Article Fifteen. Article Fifteen of the
Indenture is hereby amended by adding the following Section 15.07:

	  	         
 Section 15.07 Holders of Notes and Holders of Original Notes Vote as
Single Class. Whenever any provision of this Indenture provides for the
Holders of a series of the Notes to vote and/or consent on any matter, the
Holders of such series will vote and/or consent on any and all such matters
together with the holders of the corresponding series of the Original Notes as
one class, and neither the Holders nor the holders of the Original Notes
corresponding to such series will have the right to vote and/or consent as a
separate class on any matter.

ARTICLE TWO

Trustee

          
Section 2.01.    Trustee. The Trustee shall not be
responsible in any manner whatsoever for or in respect of the validity or
sufficiency of this Supplemental Indenture or the due execution thereof by the
Issuer. The recitals of fact contained herein shall be taken as the statements
solely of the Issuer, and the Trustee assumes no responsibility for the
correctness thereof.

ARTICLE THREE

Miscellaneous Provisions

          
Section 3.01. Ratification of Original Indenture. This Supplemental
Indenture is executed and shall be construed as an indenture supplemental to the
Original Indenture, and as supplemented and modified hereby, the Original
Indenture is in all respects ratified and confirmed, and the Original Indenture
and this Supplemental Indenture shall be read, taken and construed as one and
the same instrument.

          
Section 3.02. Effect of Headings. The Article and Section headings herein
are for convenience only and shall not affect the construction
hereof.

          
Section 3.03. Successors and Assigns. All covenants and agreements in
this Supplemental Indenture by the Issuer shall bind its successors and assigns,
whether so expressed or not.

          
Section 3.04. Separability Clause. In case any one or more of the
provisions contained in this Supplemental Indenture shall for any reason be held
to be invalid, illegal or unenforceable in any respect, the validity, legality
and enforceability of the remaining provisions shall not in any way be affected
or impaired thereby.

          
Section 3.05. Governing Law. This Supplemental Indenture shall be
governed by and construed in accordance with the laws of the State of New York.
This Supplemental Indenture is subject to the provisions of the Trust Indenture
Act of 1939, as amended, that are required to be part of this Supplemental
Indenture and shall, to the extent applicable, be governed by such
provisions.

          
Section 3.06. Counterparts. This Supplemental Indenture may be executed
in any number of counterparts, and each of such counterparts shall for all
purposes be deemed to be an original, but all such counterparts shall together
constitute one and the same instrument.

          IN
WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the date first above written.

	  	CHELSEA GCA REALTY PARTNERSHIP, L.P.

By:   Chelsea GCA Realty, Inc.,

         as General Partner

By:             
          
          
          
           

         Name:

         Title:

Attest:

          
          
          
          

Name:

Title

	  	CHELSEA GCA REALTY, INC.

By:             
          
          
          
           

         Name:

         Title:

Attest:

          
          
          
          

Name:

Title

	  

[SEAL]	STATE STREET BANK AND TRUST COMPANY

By:             
          
          
          
           

         Name:

         Title:

Attest:

          
          
          
          

Name:

Title

[FACE OF NOTE]

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE
INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY
(AS DEFINED IN THE INDENTURE) OR A NOMINEE THEREOF. THIS GLOBAL SECURITY IS
EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE
DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE
INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR
SECURITIES IN DEFINITIVE FORM, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED
EXCEPT AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY, OR BY A
NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE
DEPOSITORY, OR BY THE DEPOSITORY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITORY
OR A NOMINEE OF SUCH SUCCESSOR DEPOSITORY.

UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION
(“DTC”), TO THE ISSUER (AS DEFINED BELOW) OR ITS AGENT FOR
REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS
REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY
AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO.
OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC)
ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY
PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS
AN INTEREST HEREIN. 

	REGISTERED

NO.1 

CUSIP NO. 	REGISTERED

PRINCIPAL AMOUNT

$50,000,000

CHELSEA GCA REALTY PARTNERSHIP, L.P.

8 3/8% Note due 2005

          
Chelsea GCA Realty Partnership, L.P., a limited partnership duly organized and
existing under the laws of Delaware (hereinafter called the “Issuer”),
for value received, hereby promises to pay to Cede & Co., or its registered
assigns, the principal amount of $50,000,000 on August 17, 2005 (the
“Stated Maturity Date”), unless redeemed prior thereto in accordance
with the provisions hereof, and to pay interest thereon from and including
August 16, 2000 (or from and including the immediately preceding Interest
Payment Date (as defined below) to which interest has been paid or duly provided
for), semi-annually in arrears on February 17 and August 17 of each year,
commencing on February 17, 2001 (each, an “Interest Payment Date”),
and on the Stated Maturity Date or Redemption Date (as defined on the reverse
hereof), as the case may be (such date being referred to herein as the
“Maturity Date” with respect to the principal repayable on such date),
at the rate of 8 3/8% per annum, until payment of said principal in arrears has
been made or duly provided for. Interest on this Note will be computed on the
basis of a 360-day year of twelve 30-day months. 

          The
interest so payable and punctually paid or duly provided for on any Interest
Payment Date will be paid to the Holder in which name this Note (or one or more
predecessor Notes) is registered at the close of business on the “Regular
Record Date” for such payment, which will be the February 2 or August 2, as
the case may be, immediately preceding such Interest Payment Date, (regardless
of whether such day is a Business Day (as defined below)). Any interest not so
punctually paid or duly provided for shall forthwith cease to be payable to the
Holder on such Regular Record Date, and shall be paid to the Person in whose
name this Note (or one or more predecessor Notes) is registered at the close of
business on a subsequent Special Record Date for the payment of such defaulted
interest (which shall be not more than 15 days and not less than 10 Business
Days prior to the date of the payment of such defaulted interest) established by
notice given by mail by or on behalf of the Issuer to the Holders of the Notes
not less than 10 days preceding such subsequent Special Record Date. 

          
Payment of the principal of and the interest on this Note will be made at the
office or agency of the Issuer maintained for that purpose in Boston,
Massachusetts, in such coin or currency of the United States of America as at
the time of payment is legal tender for payment of public and private debts;
provided, however, that, at the option of the Issuer, interest may be paid by
check mailed to the address of the Person entitled thereto as such address shall
appear in the Security Register; provided, further, that payment to the
Depository Trust Company (“DTC”) or any successor depository may be
made by wire transfer to the account designated by DTC or such successor
depository in writing. 

          The
principal of and premium, if any, on this Note payable on the Maturity Date will
be paid against presentation and surrender of this Note at the office or agency
of the Issuer maintained for that purpose in Boston, Massachusetts. The Issuer
hereby initially designates the Corporate Trust Office of State Street Bank and
Trust Company (the “Trustee”) in Boston, Massachusetts as the office
to be maintained by it where Notes may be presented for payment, registration of
transfer, or exchange and where notices or demands to or upon the Issuer in
respect of the Notes or the Indenture (as defined on the reverse hereof) may be
served. 

          
Interest on this Note on any Interest Payment Date and on the Maturity Date,
will be the amount of interest accrued from and including the immediately
preceding Interest Payment Date or from and including August 16, 2000, if no
interest has been paid or duly provided for or if no interest has been paid or
duly provided for on the corresponding Original Notes, to but excluding the
applicable Interest Payment Date or the Maturity Date, as the case may be. If
any Interest Payment Date or the Maturity Date falls on a day that is not a
Business Day, the payment required to be made on such date will, instead, be
made on the next Business Day with the same force and effect as if it were made
on the date such payment was due, and no interest shall accrue on the amount so
payable for the period from and after such Interest Payment Date or the Maturity
Date, as the case may be, to the next Business Day. “Business Day”
means any day, other than a Saturday, a Sunday or other day on which banking
institutions in The City of New York are authorized or required by law,
regulation or executive order to be closed. 

          
Payments of principal, premium, if any, and interest in respect of this Note
will be made by wire transfer of immediately available funds in such coin or
currency of the United States of America as at the time of payment is legal
tender for the payment of public and private debts. 

          
Reference is made to the further provisions of this Note set forth on the
reverse hereof. Such further provisions shall for all purposes have the same
effect as though fully set forth at this place. 

          This
Note shall not be entitled to the benefits of the Indenture or be valid or
become obligatory for any purpose until the certificate of authentication hereon
shall have been signed by the Trustee under such Indenture. 

          This
Note is not guaranteed by Chelsea GCA Realty, Inc.

          IN
WITNESS WHEREOF, the Issuer has caused this Note to be signed manually or by
facsimile by an authorized signatory. 

Dated: ________________, 2000

	  	CHELSEA GCA REALTY PARTNERSHIP, L.P.

          as Issuer

By:    CHELSEA GCA REALTY, INC.,

          as General Partner

By:            
          
          
          

        Name:

        Title:

Attest:

          
          
          
          

Name:

Title

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

          This
is one of the Securities of the series designated therein referred to in the
within-mentioned Indenture. 

	  	STATE STREET BANK AND TRUST COMPANY,

          as Trustee

By:            
          
          
          
          

        Authorized Officer

[REVERSE OF NOTE]

CHELSEA GCA REALTY PARTNERSHIP, L.P.

8 3/8% Note due 2005

          This
Note is one of a duly authorized issue of debentures, notes, bonds, or other
evidences of indebtedness of the Issuer (hereinafter called the
“Securities”) of the series hereinafter specified, all issued or to be
issued under and pursuant to an Indenture dated as of January 23, 1996 (herein
called the “Original Indenture”), duly executed and delivered by the
Issuer to State Street Bank and Trust Company, as Trustee (herein called the
“Trustee,” which term includes any successor trustee under the
Indenture with respect to the series of Securities of which this Note is a
part), to which Original Indenture and all modifications and amendments and
indentures supplemental thereto, relating to the Notes, including the Second
Supplemental Indenture dated as of October 23, 1996, the Third Supplemental
Indenture dated as of October 21, 1997, the Fourth Supplemental Indenture dated
as of August 16, 2000, and the Fifth Supplemental Indenture dated as of
_____________, 2000, reference is hereby made for a description of the rights,
limitations of rights, obligations, duties, and immunities thereunder of the
Trustee, the Issuer and the Holders of the Notes, and of the terms upon which
the Notes are authenticated and delivered. The Securities may be issued in one
or more series, which different series may be issued in various aggregate
principal amounts, may mature at different times, may bear interest (if any) at
different rates, may be subject to different redemption provisions (if any), and
may otherwise vary as provided in the Indenture. This Note is one of a series
designated as the “8 3/8% Notes due 2005” of the Issuer, limited in
aggregate principal amount to $50,000,000, subject to the provisions of the
Indenture. 

          This
Note is subject to redemption at the option of the Issuer, in whole or in part,
upon not less than 30 nor more than 60 days prior written notice, at any time,
at a redemption price equal to the sum of (i) the principal amount being
redeemed, plus accrued and unpaid interest, if any, thereon to the redemption
date (the “Redemption Date”), and (ii) the Make-Whole Amount (as
defined below), if any, with respect to the principal amount being redeemed
(collectively, the “Redemption Price”); provided, however, that
interest payable on an Interest Payment Date which is on or prior to the
Redemption Date shall be payable to the Person in whose name this Note is
registered in the security register of the Issuer as of the close of business on
the Regular Record Date immediately preceding such Interest Payment Date.

          As
used herein:

          
"Make-Whole Amount" means, in connection with any optional
redemption of this Note, the excess, if any, of (i) the aggregate present value
as of the date of such redemption of each dollar of principal of this Note being
redeemed and the amount of any interest (exclusive of accrued and unpaid
interest, if any, thereon to the Redemption Date) that would have been payable
in respect of each such dollar if such redemption had not been made, determined
by discounting, on a semi-annual basis, such principal and interest at the
applicable Reinvestment Rate (determined on the third Business Day preceding the
date such notice of redemption is given) from the respective dates on which such
principal and interest would have been payable if such redemption had not been
made, over (ii) the aggregate principal amount of this Note being redeemed.

          
"Reinvestment Rate" means 0.25% plus the yield on treasury
securities at a constant maturity under the heading “Week Ending”
published in the most recent Statistical Release under the caption
“Treasury Constant Maturities” for the maturity (rounded to the
nearest month) corresponding to the remaining life to maturity, as of the
payment date of the principal amount of this Note being redeemed. If no maturity
exactly corresponds to such maturity, yields for the two published maturities
most closely corresponding to such maturity shall be calculated pursuant to the
immediately preceding sentence and the Reinvestment Rate shall be interpolated
or extrapolated from such yields on a straight-line basis, rounding in each of
such relevant periods to the nearest month. For the purpose of calculating the
Reinvestment Rate, the most recent Statistical Release published prior to the
date of determination of the Make-Whole Amount shall be used. 

          
"Statistical Release" means the statistical release designated
“H.15(519)” or any successor publication which is published weekly by
the Board of Governors of the Federal Reserve System and which establishes
yields on actively traded United States government securities adjusted to
constant maturities, or, if such statistical release is not published at the
time of any determination of the Make-Whole Amount, then such other reasonably
comparable index which shall be designated by the Issuer. 

          This
Note is not subject to repayment at the option of the Holder hereof. In
addition, this Note is not entitled to the benefit of any sinking fund.

          In
case an Event of Default with respect to this Note shall have occurred and be
continuing, the principal hereof may be declared, and upon such declaration
shall become, due and payable, in the manner, with the effect, and subject to
the conditions, provided in the Indenture. 

          The
Indenture permits, with certain exceptions as therein provided, the amendment
thereof and the modification of the rights and obligations of the Issuer and the
rights of the Holders of the Securities under the Indenture at any time by the
Issuer and the Trustee with the consent of the Holders of not less than a
majority of the aggregate principal amount of all Securities issued under the
Indenture at the time outstanding and affected thereby. Furthermore, provisions
in the Indenture permit the Holders of not less than a majority of the aggregate
principal amount, in certain instances, of the Outstanding Securities of any
series to waive, on behalf of all of the Holders of Securities of such series,
certain past defaults under the Indenture and their consequences. Any such
waiver by the Holder of this Note shall be conclusive and binding upon such
Holder and upon all future Holders of this Note and other Notes issued upon the
registration of transfer hereof or in exchange hereof, or in lieu hereof,
whether or not such consent or waiver is made upon this Note. 

          No
reference herein to the Indenture and no provision of this Note or of the
Indenture shall alter or impair the obligation of the Issuer, which is absolute
and unconditional, to pay the principal of and premium, if any, and interest on
this Note in the manner, at the respective times, at the rate and in the coin or
currency herein prescribed. 

          This
Note is issuable only in fully registered, book-entry form, without coupons, in
minimum denominations of $100,000 and integral multiples of $1,000 in excess
thereof. This Note may be exchanged for a like aggregate principal amount of
Notes of other authorized denominations at the office or agency of the Issuer in
Boston, Massachusetts, in the manner and subject to the limitations provided
herein and in the Indenture, but without the payment of any charge except for
any tax or other governmental charge imposed in connection therewith.

          Upon
due presentment for registration of transfer of this Note at the office or
agency of the Issuer in Boston, Massachusetts, one or more new Notes of
authorized denominations in an equal aggregate principal amount will be issued
to the transferee in exchange therefor, subject to the limitations provided
herein and in the Indenture, but without payment of any charge except for any
tax or other governmental charge imposed in connection therewith. 

          The
Issuer, the Trustee or any authorized agent of the Issuer or the Trustee may
deem and treat the Person in whose name this Note is registered as the absolute
owner of this Note (whether or not this Note shall be overdue and
notwithstanding any notation of ownership or other writing hereon), for the
purpose of receiving payment of, or on account of, the principal hereof or
premium, if any, hereon, and subject to the provisions on the face hereof,
interest hereon and for all other purposes, and neither the Issuer or the
Trustee nor any authorized agent of the Issuer or the Trustee shall be affected
by any notice to the contrary. 

          The
Indenture and this Note shall be deemed to be a contract under the laws of the
State of New York, and for all purposes shall be governed by and construed in
accordance with the laws of such state, without giving effect to any conflict of
law principles. 

          
Capitalized terms used herein which are not otherwise defined shall have the
respective meanings assigned to them in the Indenture. 

ASSIGNMENT

          FOR
VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
unto

PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE

(Please print or Typewrite Name and Address

Including Postal Zip Code of Assignee)

the within Note and all rights thereunder, and hereby
irrevocably constitutes and appoints

to transfer said Note on the books of the Issuer, with full
power of substitution in the premises. 

[FACE OF NOTE]

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE
INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY
(AS DEFINED IN THE INDENTURE) OR A NOMINEE THEREOF. THIS GLOBAL SECURITY IS
EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE
DEPOSITORY OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE
INDENTURE AND, UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR
SECURITIES IN DEFINITIVE FORM, THIS GLOBAL SECURITY MAY NOT BE TRANSFERRED
EXCEPT AS A WHOLE BY THE DEPOSITORY TO A NOMINEE OF THE DEPOSITORY, OR BY A
NOMINEE OF THE DEPOSITORY TO THE DEPOSITORY OR ANOTHER NOMINEE OF THE
DEPOSITORY, OR BY THE DEPOSITORY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITORY
OR A NOMINEE OF SUCH SUCCESSOR DEPOSITORY. 

UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION
(“DTC”), TO THE ISSUER (AS DEFINED BELOW) OR ITS AGENT FOR
REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS
REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY
AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO.
OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC)
ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY
PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS
AN INTEREST HEREIN. 

	REGISTERED

NO.1 

CUSIP NO. 	REGISTERED

PRINCIPAL AMOUNT

$50,000,000

CHELSEA GCA REALTY PARTNERSHIP, L.P.

8 5/8% Note due 2009

          
Chelsea GCA Realty Partnership, L.P., a limited partnership duly organized and
existing under the laws of Delaware (hereinafter called the “Issuer”),
for value received, hereby promises to pay to Cede & Co., or its registered
assigns, the principal amount of $50,000,000 on August 17, 2009 (the
“Stated Maturity Date”), unless redeemed prior thereto in accordance
with the provisions hereof, and to pay interest thereon from and including
August 16, 2000 (or from and including the immediately preceding Interest
Payment Date (as defined below) to which interest has been paid or duly provided
for), semi-annually in arrears on February 17 and August 17 of each year,
commencing on February 17, 2001 (each, an “Interest Payment Date”),
and on the Stated Maturity Date or Redemption Date (as defined on the reverse
hereof), as the case may be (such date being referred to herein as the
“Maturity Date” with respect to the principal repayable on such date),
at the rate of 8 5/8% per annum, until payment of said principal in arrears has
been made or duly provided for. Interest on this Note will be computed on the
basis of a 360-day year of twelve 30-day months. 

          The
interest so payable and punctually paid or duly provided for on any Interest
Payment Date will be paid to the Holder in which name this Note (or one or more
predecessor Notes) is registered at the close of business on the “Regular
Record Date” for such payment, which will be the February 2 or August 2, as
the case may be, immediately preceding such Interest Payment Date, (regardless
of whether such day is a Business Day (as defined below)). Any interest not so
punctually paid or duly provided for shall forthwith cease to be payable to the
Holder on such Regular Record Date, and shall be paid to the Person in whose
name this Note (or one or more predecessor Notes) is registered at the close of
business on a subsequent Special Record Date for the payment of such defaulted
interest (which shall be not more than 15 days and not less than 10 Business
Days prior to the date of the payment of such defaulted interest) established by
notice given by mail by or on behalf of the Issuer to the Holders of the Notes
not less than 10 days preceding such subsequent Special Record Date. 

          
Payment of the principal of and the interest on this Note will be made at the
office or agency of the Issuer maintained for that purpose in Boston,
Massachusetts, in such coin or currency of the United States of America as at
the time of payment is legal tender for payment of public and private debts;
provided, however, that, at the option of the Issuer, interest may be paid by
check mailed to the address of the Person entitled thereto as such address shall
appear in the Security Register; provided, further, that payment to the
Depository Trust Company (“DTC”) or any successor depository may be
made by wire transfer to the account designated by DTC or such successor
depository in writing. 

          The
principal of and premium, if any, on this Note payable on the Maturity Date will
be paid against presentation and surrender of this Note at the office or agency
of the Issuer maintained for that purpose in Boston, Massachusetts. The Issuer
hereby initially designates the Corporate Trust Office of State Street Bank and
Trust Company (the “Trustee”) in Boston, Massachusetts as the office
to be maintained by it where Notes may be presented for payment, registration of
transfer, or exchange and where notices or demands to or upon the Issuer in
respect of the Notes or the Indenture (as defined on the reverse hereof) may be
served. 

          
Interest on this Note on any Interest Payment Date and on the Maturity Date,
will be the amount of interest accrued from and including the immediately
preceding Interest Payment Date or from and including August 16, 2000, if no
interest has been paid or duly provided for or if no interest has been paid or
duly provided for on the corresponding Original Notes, to but excluding the
applicable Interest Payment Date or the Maturity Date, as the case may be. If
any Interest Payment Date or the Maturity Date falls on a day that is not a
Business Day, the payment required to be made on such date will, instead, be
made on the next Business Day with the same force and effect as if it were made
on the date such payment was due, and no interest shall accrue on the amount so
payable for the period from and after such Interest Payment Date or the Maturity
Date, as the case may be, to the next Business Day. “Business Day”
means any day, other than a Saturday, a Sunday or other day on which banking
institutions in The City of New York are authorized or required by law,
regulation or executive order to be closed. 

          
Payments of principal, premium, if any, and interest in respect of this Note
will be made by wire transfer of immediately available funds in such coin or
currency of the United States of America as at the time of payment is legal
tender for the payment of public and private debts. 

          
Reference is made to the further provisions of this Note set forth on the
reverse hereof. Such further provisions shall for all purposes have the same
effect as though fully set forth at this place. 

          This
Note shall not be entitled to the benefits of the Indenture or be valid or
become obligatory for any purpose until the certificate of authentication hereon
shall have been signed by the Trustee under such Indenture. 

          This
Note is not guaranteed by Chelsea GCA Realty, Inc.

          IN
WITNESS WHEREOF, the Issuer has caused this Note to be signed manually or by
facsimile by an authorized signatory. 

Dated: ________________, 2000

	  	CHELSEA GCA REALTY PARTNERSHIP, L.P.

          as Issuer

By:    CHELSEA GCA REALTY, INC.,

          as General Partner

By:            
          
          
          

        Name:

        Title:

Attest:

          
          
          
          

Name:

Title

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

          This
is one of the Securities of the series designated therein referred to in the
within-mentioned Indenture. 

	  	STATE STREET BANK AND TRUST COMPANY,

          as Trustee

By:            
          
          
          
          

        Authorized Officer

[REVERSE OF NOTE]

CHELSEA GCA REALTY PARTNERSHIP, L.P.

8 5/8% Note due 2009

          This
Note is one of a duly authorized issue of debentures, notes, bonds, or other
evidences of indebtedness of the Issuer (hereinafter called the
“Securities”) of the series hereinafter specified, all issued or to be
issued under and pursuant to an Indenture dated as of January 23, 1996 (herein
called the “Original Indenture”), duly executed and delivered by the
Issuer to State Street Bank and Trust Company, as Trustee (herein called the
“Trustee,” which term includes any successor trustee under the
Indenture with respect to the series of Securities of which this Note is a
part), to which Original Indenture and all modifications and amendments and
indentures supplemental thereto, relating to the Notes, including the Second
Supplemental Indenture dated as of October 23, 1996, the Third Supplemental
Indenture dated as of October 21, 1997, the Fourth Supplemental Indenture dated
as of August 16, 2000, and the Fifth Supplemental Indenture dated as of
______________, 2000, reference is hereby made for a description of the rights,
limitations of rights, obligations, duties, and immunities thereunder of the
Trustee, the Issuer and the Holders of the Notes, and of the terms upon which
the Notes are authenticated and delivered. The Securities may be issued in one
or more series, which different series may be issued in various aggregate
principal amounts, may mature at different times, may bear interest (if any) at
different rates, may be subject to different redemption provisions (if any), and
may otherwise vary as provided in the Indenture. This Note is one of a series
designated as the “8 5/8% Notes due 2009” of the Issuer, limited in
aggregate principal amount to $50,000,000, subject to the provisions of the
Indenture. 

          This
Note is subject to redemption at the option of the Issuer, in whole or in part,
upon not less than 30 nor more than 60 days prior written notice, at any time,
at a redemption price equal to the sum of (i) the principal amount being
redeemed, plus accrued and unpaid interest, if any, thereon to the redemption
date (the “Redemption Date”), and (ii) the Make-Whole Amount (as
defined below), if any, with respect to the principal amount being redeemed
(collectively, the “Redemption Price”); provided, however, that
interest payable on an Interest Payment Date which is on or prior to the
Redemption Date shall be payable to the Person in whose name this Note is
registered in the security register of the Issuer as of the close of business on
the Regular Record Date immediately preceding such Interest Payment Date.

          As
used herein:

          
"Make-Whole Amount" means, in connection with any optional
redemption of this Note, the excess, if any, of (i) the aggregate present value
as of the date of such redemption of each dollar of principal of this Note being
redeemed and the amount of any Interest (exclusive of accrued and unpaid
interest, if any, thereon to the Redemption Date) that would have been payable
in respect of each such dollar if such redemption had not been made, determined
by discounting, on a semi-annual basis, such principal and interest at the
applicable Reinvestment Rate (determined on the third Business Day preceding the
date such notice of redemption is given) from the respective dates on which such
principal and interest would have been payable if such redemption had not been
made, over (ii) the aggregate principal amount of this Note being redeemed.

          
"Reinvestment Rate" means 0.25% plus the yield on treasury
securities at a constant maturity under the heading “Week Ending”
published in the most recent Statistical Release under the caption
“Treasury Constant Maturities” for the maturity (rounded to the
nearest month) corresponding to the remaining life to maturity, as of the
payment date of the principal amount of this Note being redeemed. If no maturity
exactly corresponds to such maturity, yields for the two published maturities
most closely corresponding to such maturity shall be calculated pursuant to the
immediately preceding sentence and the Reinvestment Rate shall be interpolated
or extrapolated from such yields on a straight-line basis, rounding in each of
such relevant periods to the nearest month. For the purpose of calculating the
Reinvestment Rate, the most recent Statistical Release published prior to the
date of determination of the Make-Whole Amount shall be used. 

          
"Statistical Release" means the statistical release designated
“H.15(519)” or any successor publication which is published weekly by
the Board of Governors of the Federal Reserve System and which establishes
yields on actively traded United States government securities adjusted to
constant maturities, or, if such statistical release is not published at the
time of any determination of the Make-Whole Amount, then such other reasonably
comparable index which shall be designated by the Issuer. 

          This
Note is not subject to repayment at the option of the Holder hereof. In
addition, this Note is not entitled to the benefit of any sinking fund.

          In
case an Event of Default with respect to this Note shall have occurred and be
continuing, the principal hereof may be declared, and upon such declaration
shall become, due and payable, in the manner, with the effect, and subject to
the conditions, provided in the Indenture. 

          The
Indenture permits, with certain exceptions as therein provided, the amendment
thereof and the modification of the rights and obligations of the Issuer and the
rights of the Holders of the Securities under the Indenture at any time by the
Issuer and the Trustee with the consent of the Holders of not less than a
majority of the aggregate principal amount of all Securities issued under the
Indenture at the time outstanding and affected thereby. Furthermore, provisions
in the Indenture permit the Holders of not less than a majority of the aggregate
principal amount, in certain instances, of the Outstanding Securities of any
series to waive, on behalf of all of the Holders of Securities of such series,
certain past defaults under the Indenture and their consequences. Any such
waiver by the Holder of this Note shall be conclusive and binding upon such
Holder and upon all future Holders of this Note and other Notes issued upon the
registration of transfer hereof or in exchange hereof, or in lieu hereof,
whether or not such consent or waiver is made upon this Note. 

          No
reference herein to the Indenture and no provision of this Note or of the
Indenture shall alter or impair the obligation of the Issuer, which is absolute
and unconditional, to pay the principal of and premium, if any, and interest on
this Note in the manner, at the respective times, at the rate and in the coin or
currency herein prescribed. 

          This
Note is issuable only in fully registered, book-entry form, without coupons, in
minimum denominations of $100,000 and integral multiples of $1,000 in excess
thereof. This Note may be exchanged for a like aggregate principal amount of
Notes of other authorized denominations at the office or agency of the Issuer in
Boston, Massachusetts, in the manner and subject to the limitations provided
herein and in the Indenture, but without the payment of any charge except for
any tax or other governmental charge imposed in connection therewith.

          Upon
due presentment for registration of transfer of this Note at the office or
agency of the Issuer in Boston, Massachusetts, one or more new Notes of
authorized denominations in an equal aggregate principal amount will be issued
to the transferee in exchange therefor, subject to the limitations provided
herein and in the Indenture, but without payment of any charge except for any
tax or other governmental charge imposed in connection therewith. 

          The
Issuer, the Trustee or any authorized agent of the Issuer or the Trustee may
deem and treat the Person in whose name this Note is registered as the absolute
owner of this Note (whether or not this Note shall be overdue and
notwithstanding any notation of ownership or other writing hereon), for the
purpose of receiving payment of, or on account of, the principal hereof or
premium, if any, hereon, and subject to the provisions on the face hereof,
interest hereon and for all other purposes, and neither the Issuer or the
Trustee nor any authorized agent of the Issuer or the Trustee shall be affected
by any notice to the contrary. 

          The
Indenture and this Note shall be deemed to be a contract under the laws of the
State of New York, and for all purposes shall be governed by and construed in
accordance with the laws of such state, without giving effect to any conflict of
law principles. 

          
Capitalized terms used herein which are not otherwise defined shall have the
respective meanings assigned to them in the Indenture. 

ASSIGNMENT

          FOR
VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
unto

PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE

(Please print or Typewrite Name and Address

Including Postal Zip Code of Assignee)

the within Note and all rights thereunder, and hereby
irrevocably constitutes and appoints

to transfer said Note on the books of the Issuer, with full
power of substitution in the premises.

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