Document:

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                                                                    EXHIBIT 10.3

                 SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT

        THIS SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT ("AMENDMENT") is
entered into to be effective as of the 19th day of July, 2004, by and between
HIPPO PROPERTIES LLC, a Delaware limited liability company ("SELLER"), and
HARVARD PROPERTY TRUST, LLC, a Delaware limited liability company ("PURCHASER").
All capitalized terms used herein and not otherwise defined herein shall have
the meanings ascribed to them in the Purchase Agreement (defined below).

                              W I T N E S S E T H:

        WHEREAS, Seller and Purchaser previously entered into that certain
Purchase and Sale Agreement dated as of April 30, 2004, as amended by that
certain First Amendment to Purchase and Sale Agreement dated May 20, 2004
(collectively, the "PURCHASE AGREEMENT"), pursuant to which Seller agreed to
sell to Purchaser and Purchaser agreed to purchase the Property described
therein.

        WHEREAS, Seller and Purchaser now desire to amend the Purchase Agreement
in certain respects, as hereinafter set forth.

        NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:

        1.      EXTENSION OF CLOSING DATE. Seller and Purchaser agree that the
Date of Closing shall be August 9, 2004; provided, however, that Purchaser may
elect to have Closing occur prior to August 9, 2004, by sending written notice
to Seller designating an earlier Date of Closing at least two (2) business days
before such designated earlier Date of Closing.

        2.      ADDITIONAL DEPOSIT. No later than July 23, 2004, Purchaser shall
deliver to the Title Company an addition to the Deposit in the amount of Two
Million Dollars ($2,000,000). After such funds are delivered to the Title
Company, the amount of the Deposit will be Four Million Seven Hundred Thousand
Dollars ($4,700,000)(plus accrued interest).

        3.      EFFECT OF AMENDMENT. This Amendment modifies and amends the
Purchase Agreement and the terms and provisions hereof shall supersede and
control over any contrary or conflicting terms and provisions set forth in the
Purchase Agreement. The Purchase Agreement, as amended by this Amendment,
remains in full force and effect.

        4.      COUNTERPARTS. To facilitate execution of this Amendment, this
Amendment may be executed in multiple counterparts, each of which, when
assembled to include an original signature for each party contemplated to sign
this Amendment, will constitute a complete and fully executed original. All such
fully executed original counterparts will collectively constitute a single
agreement.

        5.      FACSIMILE SIGNATURES. In order to expedite the transaction
contemplated herein, telecopied or facsimile signatures may be used in place of
original signatures on this Amendment. Seller and Purchaser intend to be bound
by the signatures on the telecopied

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document, are aware that the other party will rely on the telecopied signatures,
and hereby waive any defenses to the enforcement of the terms of this Amendment
based on the form of signature.

        IN WITNESS WHEREOF, the parties hereto have executed this Amendment to
be effective the date and year first above written.

                                    SELLER:

                                    HIPPO PROPERTIES LLC,
                                    a Delaware limited liability company

                                    By: Hippo Ventures LLC, Manager

                                        By: Hippo Management LLC, Manager

                                            By:_________________________________
                                            Name:_______________________________
                                            Title:______________________________

                                    PURCHASER:

                                    HARVARD PROPERTY TRUST, LLC,
                                    a Delaware limited liability company

                                    By:_________________________________
                                    Name:_______________________________
                                    Title:______________________________

                                       2<PAGE>

                                                                    EXHIBIT 10.4

                 THIRD AMENDMENT TO PURCHASE AND SALE AGREEMENT

        THIS THIRD AMENDMENT TO PURCHASE AND SALE AGREEMENT ("AMENDMENT") is
entered into to be effective as of the 9th day of August, 2004, by and between
HIPPO PROPERTIES LLC, a Delaware limited liability company ("Seller"), and
HARVARD PROPERTY TRUST, LLC, a Delaware limited liability company ("PURCHASER").
All capitalized terms used herein and not otherwise defined herein shall have
the meanings ascribed to them in the Purchase Agreement (defined below).

                              W I T N E S S E T H:

        WHEREAS, Seller and Purchaser previously entered into that certain
Purchase and Sale Agreement dated as of April 30, 2004, as amended by that
certain First Amendment to Purchase and Sale Agreement dated May 20, 2004, and
that certain Second Amendment to Purchase and Sale Agreement dated July 19, 2004
(collectively, the "PURCHASE AGREEMENT"), pursuant to which Seller agreed to
sell to Purchaser and Purchaser agreed to purchase the Property described
therein.

        WHEREAS, Seller and Purchaser now desire to amend the Purchase Agreement
in certain respects, as hereinafter set forth.

        NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows:

        1.      EXTENSION OF CLOSING DATE. Seller and Purchaser agree that the
Date of Closing shall be August 10, 2004.

        2.      EFFECT OF AMENDMENT. This Amendment modifies and amends the
Purchase Agreement and the terms and provisions hereof shall supersede and
control over any contrary or conflicting terms and provisions set forth in the
Purchase Agreement. The Purchase Agreement, as amended by this Amendment,
remains in full force and effect.

        3.      COUNTERPARTS. To facilitate execution of this Amendment, this
Amendment may be executed in multiple counterparts, each of which, when
assembled to include an original signature for each party contemplated to sign
this Amendment, will constitute a complete and fully executed original. All such
fully executed original counterparts will collectively constitute a single
agreement.

        4.      FACSIMILE SIGNATURES. In order to expedite the transaction
contemplated herein, telecopied or facsimile signatures may be used in place of
original signatures on this Amendment. Seller and Purchaser intend to be bound
by the signatures on the telecopied document, are aware that the other party
will rely on the telecopied signatures, and hereby waive any defenses to the
enforcement of the terms of this Amendment based on the form of signature.

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        IN WITNESS WHEREOF, the parties hereto have executed this Amendment to
be effective the date and year first above written.

                                    SELLER:

                                    HIPPO PROPERTIES LLC,
                                    a Delaware limited liability company

                                    By: Hippo Ventures LLC, Manager

                                        By: Hippo Management LLC, Manager

                                            By:_________________________________
                                            Name:_______________________________
                                            Title:______________________________

                                    PURCHASER:

                                    HARVARD PROPERTY TRUST, LLC,
                                    a Delaware limited liability company

                                    By:_________________________________
                                    Name:_______________________________
                                    Title:______________________________

                                       2<PAGE>

                                                                    Exhibit 10.5

RECORDING REQUESTED BY,                        )
WHEN RECORDED MAIL TO:                         )
Behringer Harvard Colorado Building H, LLC     )
1323 North Stemmons Freeway, Suite 224         )
Dallas, Texas 75207                            )
                                               )
                                               )
--------------------------------------------------------------------------------
                                               Above Space for Recorder's Use

THE POWER OF ATTORNEY CONTAINED IN SECTION 12 AUTHORIZES THE PERSON NAMED BELOW
AS MY ATTORNEY-IN-FACT IN CERTAIN CIRCUMSTANCES TO DO ONE OR MORE OF THE
FOLLOWING: TO SELL, LEASE, GRANT, ENCUMBER, RELEASE, OR OTHERWISE CONVEY ANY
INTEREST IN MY REAL PROPERTY AND TO EXECUTE DEEDS AND ALL OTHER INSTRUMENTS ON
MY BEHALF, UNLESS THIS POWER OF ATTORNEY IS OTHERWISE LIMITED HEREIN TO SPECIFIC
REAL PROPERTY.

                           TENANTS IN COMMON AGREEMENT

        This TENANTS IN COMMON AGREEMENT  ("Agreement") is made and effective as
of the date of recordation hereof (the "Effective Date"), by and among Behringer
Harvard  Colorado  Building H, LLC, a Delaware  limited  liability  company (the
"Company"),  and the other  Tenants in Common  set forth on  Schedule A attached
hereto  (each of  Behringer,  the Company and the other  Tenants in Common shall
sometimes individually be referred to as "Tenant in Common" and collectively, as
"Tenants in Common"), with reference to the facts set forth below.

                                    RECITALS

        A.      The Tenants in Common will acquire the percentage undivided
interests set forth on Exhibit "A" in certain real property and improvements, as
more particularly described in Exhibit "B" attached hereto and incorporated
herein (the "Project").

        B.      The Tenants in Common desire to enter into this Agreement to
provide for the orderly administration of their rights and responsibilities as
to each other and as to others and to delegate authority and responsibility for
the intended further operation and management of the Project.

        NOW, THEREFORE, in consideration of the mutual covenants and conditions
contained in this Agreement and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties agree as
set forth below.

        1.      NATURE OF RELATIONSHIP BETWEEN CO-TENANTS. The Tenants in Common
shall each hold their respective interests in the Project as tenants-in-common.
The Tenants in Common do not intend by this Agreement to create a partnership or
a joint venture, but merely to set forth the terms and conditions upon which
each of them shall hold their respective interests in the Project. Neither do
the Tenants in Common wish to create a partnership or joint venture with the
Property Manager (as defined below). Each Tenant in Common hereby elects to be
excluded from the provisions of Subchapter K of Chapter 1 of the Internal
Revenue Code of 1986, as amended (the "Code"), with respect to the joint
ownership of the Project. The exclusion elected by the Tenants in Common
hereunder shall commence with the execution of this Agreement and shall be
equally applicable to all assignees of a Tenant in Common upon

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such assignment. Each Tenant in Common hereby covenants and agrees that each
Tenant in Common shall report on such Tenant in Common's respective federal and
state income tax returns such Tenant in Common's respective share of items of
income, gain/loss, deduction and credits that result from holding the Project in
a manner consistent with (i) the treatment of the co-tenancy as a co-ownership
of real property (and not a partnership) for Federal and state income tax
purposes and (ii) the exclusion of the Tenants in Common from Subchapter K of
Chapter 1 of the Code, commencing with the first taxable year of such Tenant in
Common that includes the Effective Date or, for assignees of a Tenant in Common,
the date of such assignment. No Tenant in Common shall notify the Commissioner
of Internal Revenue that such Tenant in Common desires that Subchapter K of the
Code apply to the Tenants in Common and each Tenant in Common hereby agrees to
indemnify, protect, defend and hold the other Tenants in Common free and
harmless from all costs, liabilities, tax consequences and expenses, including,
without limitation, attorneys' fees, which may result from any Tenant in Common
so notifying the Commissioner in violation of this Agreement or otherwise taking
a contrary position on any tax return. The Tenants in Common shall not file a
partnership or corporate tax return, conduct business under a common name,
execute an agreement identifying any or all of the Tenants in Common as
partners, shareholders, or members of a business entity, or otherwise hold
themselves out as a partnership or other form of business entity. Except as
expressly provided herein, no Tenant in Common is authorized to act as agent
for, to act on behalf of, or to do any act that will bind any other Tenant in
Common or to incur any obligations with respect to the Project.

        2.      MANAGEMENT.

                2.1     MANAGEMENT AGREEMENT. Concurrently with the acquisition
of the Project, the Tenants in Common will enter into a Property and Asset
Management Agreement (the "Management Agreement") with Behringer Harvard TIC
Management Services LP, a Texas limited partnership ("Property Manager").
Pursuant to the Management Agreement, the Property Manager shall be the sole and
exclusive manager of the Project, interface with the owner and holder of any
first lien deed of trust encumbering the Project during the term of the
Management Agreement and act as the agent of the Tenants in Common with respect
to the management, operation, maintenance and leasing of the Project during the
term of the Management Agreement. A copy of the Management Agreement is attached
hereto as Exhibit "C" and the terms, covenants and conditions of the Management
Agreement are incorporated herein as if set forth in full. Neither (a) the
death, retirement, removal, withdrawal, termination or resignation of the
Property Manager, (b) any assignment for the benefit of creditors by or the
adjudication of bankruptcy or incompetency of the Property Manager nor (c) the
termination of the Management Agreement shall cause the termination of this
Agreement and this Agreement shall remain in full force and effect
notwithstanding any such events.

                2.2     UNANIMOUS CONSENT OF THE TENANTS IN COMMON.

                        2.2.1   The consent of all of the Tenants in Common
shall be required with respect to any sale, exchange, lease or release of all or
a portion of the Project, any loans secured by the Project ("Loan") or
modifications thereof, the approval of any property management agreement or any
extension, renewal or modification thereof. Whenever in this Agreement the
consent or approval of the Tenants in Common is required or otherwise requested,
with respect to any (i) sale or exchange of all or a portion of the Project or
(ii) Loan or modification of any Loan, the Tenants in Common shall have fifteen
(15) days after the date the request for such consent or approval is received
pursuant to Section 10.8 to approve or disapprove of the matter. Whenever in
this Agreement the consent or approval of the Tenants in Common is required or

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otherwise requested, with respect to any modification or renewal of the any
property management agreement, the Tenants in Common shall have thirty (30) days
after the date the request for consent or approval is received pursuant to
Section 10.8 to approve or disapprove of the matter. Whenever in this Agreement
the consent or approval of the Tenants in Common is required or otherwise
requested, with respect to any lease or release of all or a portion of the
Project, the Tenants in Common shall have five (5) days after the date the
request for consent or approval is received pursuant to Section 10.8 to the
Tenants in Common for their approval or disapproval of the matter. The Tenants
in Common agree to use their best efforts to respond to any request for consent
or approval. If a Tenant in Common does not disapprove of such matter within the
specified response period described above, the Tenant in Common shall be deemed
to have approved the matter. By execution hereof, the Tenants in Common confirm
their approval of the Management Agreement and that certain Loan made (or to be
made immediately after the execution of this Agreement) by Greenwich Capital
Financial Products, Inc., a wholly-owned subsidiary of the Royal Bank of
Scotland Group Plc (together with its successors and/or assigns, "Greenwich
Capital") secured by, among other things, a mortgage or deed of trust ("Deed of
Trust") on the Project (the "Greenwich Capital Loan"). For all purposes under
this Agreement, the Greenwich Capital Loan shall include, and the Tenants in
Common hereby approve of, that certain $3,000,000 holdback which may be drawn
upon for leasing costs until November 1, 2004, and will thereafter be funded
into the tenant improvement and leasing commission reserve.

                        2.2.2   The consent of 50% of the Tenants in Common
shall be required for the approval of the annual capital and operating budget
("Budget") for the promotion, operation, leasing, repair, maintenance and
improvement of the Project for each calendar year. The Property Manager shall
prepare the Budget. The Budget for the initial calendar year is attached hereto
as Exhibit "C" to the Management Agreement and is hereby approved by each Tenant
in Common. The Property Manager shall deliver each subsequent Budget for each
subsequent calendar year by December 15th of the calendar year before the budget
year, or as soon as possible thereafter. The Tenants in Common shall have
fifteen (15) days after delivery of the Budget to the Tenants in Common to
approve or disapprove of the Budget. The Tenants in Common agree to use their
best efforts to approve the Budget. If a Tenant in Common does not disapprove
the Budget, or any item therein, within such fifteen (15) day specified response
period described above, the Tenant in Common shall have been deemed to have
approved the Budget. In the event the approval is not obtained, the
non-approving Tenant(s) in Common shall negotiate in good faith with the
Property Manager and the other Tenants in Common for fifteen (15) days to
resolve the issue. If the parties are unable to reach an agreement, the issue
shall be resolved by arbitration as set forth in Section 8.1 with the disputing
Tenants in Common and the other Tenants in Common each paying 50% of the costs
of the arbitration. The Property Manager may proceed under the terms of the
proposed Budget for items that are not objected to and may take any action with
respect to items not approved for Emergency Expenditures (as defined in Section
2.5.2 of the Management Agreement). In the event that the items that are
objected to are operational expenditures, as opposed to capital expenditures,
the Property Manager shall be entitled to operate the Project using the prior
year's budget until approval is obtained. The Property Manager may at any time
submit a revised Budget to the Tenants in Common for their approval which will
be governed by the terms of this Section 2.2.2.

                2.3     MAJORITY CONSENT OF THE TENANTS IN COMMON. Whenever the
approval or consent of the Tenants in Common is required with respect to any
items, other than those set forth in Section 2.2, the approval or consent of the
Tenants in Common holding more than 50% of the undivided interests in the
Project shall be required to approve such action. The Tenants in Common shall
have fifteen (15) days after the date the request for such consent or approval
is received pursuant to Section 10.8 to approve or disapprove of the matter. The
Tenants in Common agree to use their best efforts to respond to any request for
consent or approval. If a Tenant in Common does not disapprove of any item
requiring the consent of the Tenants in Common pursuant to this Section 2.3
within the fifteen (15) day specified response period described above, the
Tenant in Common shall be deemed to have approved the matter.

        3.      INCOME AND LIABILITIES. Except as otherwise provided herein and
in the Management Agreement, all benefits and obligations of the ownership of
the Project, including, without limitation, income, revenue, operating expenses,
proceeds from sale or refinance or condemnation awards shall be

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shared by the Tenants in Common in proportion to their respective undivided
interests in the Project. Notwithstanding the foregoing, (a) each Tenant in
Common shall be responsible for all real estate and personal property taxes,
general and special real property assessments and other like charges
(collectively "Taxes") attributable to its undivided interest in the Project,
(b) fees under the Management Agreement shall be paid by each of the Tenants in
Common as provided in the Management Agreement and (c) expenses or other costs
that are not applied to the Tenants in Common pro rata based on their interests
in the Project shall be separately charged to each Tenant in Common. The Tenants
in Common shall receive, within 3 months of receipt by the Property Manager, all
cash from operations of the Project after payment of expenses and debt service
and reserve payments under any Loan, including the Greenwich Capital Loan, in
proportion to their respective undivided interests in the Project, except for
such amounts as may be determined by the Property Manager pursuant to the
Management Agreement to be retained for reserves or improvements

        4.      CO-TENANT'S OBLIGATIONS. The Tenants in Common each agree to
perform such acts as may be reasonably necessary to carry out the terms and
conditions of this Agreement, including, without limitation:

                4.1     DOCUMENTS. The Tenants in Common shall execute any and
all documents required in connection with a sale or refinancing of the Project
in accordance with Section 5 and such additional documents as may be required
under this Agreement or may be reasonably required to effect the intent of the
Tenants in Common with respect to the Project or any Loans.

                4.2     ADDITIONAL FUNDS. Each Tenant in Common will be
responsible for a pro rata share (based on its undivided interest or as
otherwise provided with respect to the fees under the Management Agreement or
other items specifically applicable to individual Tenants in Common) with
respect to operating expenses, Taxes (as defined in the Management Agreement),
debt service, the fees payable to the Property Manager pursuant to the
Management Agreement, or other items specifically applicable to individual
Tenants in Common or any future cash needed in connection with the ownership,
operation, management and maintenance of the Project as determined by the
Property Manager pursuant to the Management Agreement. Without limiting the
foregoing, each Tenant in Common agrees that if any Loan for the Project
provides for recourse liability to the Company or any affiliate and non-recourse
liability to one or more of the other Tenants in Common, and if the Company or
any affiliate pays more than its pro rata share of the liability related to the
Loan (as compared to its ownership interest) as a result of such recourse
liability ("Excess Payment"), the Tenants in Common agree to reimburse the
Company or any affiliate for the Tenants in Common's pro rata share of such
Excess Payment; provided, however, that the Property Manager has agreed to
indemnify the Tenants in Common in Section 13.9.2 of the Management Agreement to
the extent a Tenant in Common becomes liable to any lender as a result of
certain actions of the Property Manager. In addition, each Tenant in Common
shall be liable for, and indemnify and hold harmless, the other Tenants in
Common and their affiliates as a result of any action or inaction by such Tenant
in Common that causes any recourse liability or damages to the Tenants in Common
or their affiliates or the Project with respect to any Loan. To the extent any
Tenant in Common fails to advance any funds or fails to pay its share of
expenses pursuant to this Section within fifteen (15) days after the Property
Manager or the Company delivers notice that such additional funds are required,
such Tenant in Common shall be deemed to be a Defaulting Tenant in Common as
defined in Section 7.3 of this Agreement. In addition, the Property Manager is
hereby authorized to withhold from the Defaulting Tenant in Common's share of
proceeds and distributions any amounts due under this Section 4.2 and not paid
by any such Defaulting Tenant in Common. In the event any Tenant in Common
becomes a Defaulting Tenant in Common, the non-defaulting tenants in common
shall have the right to purchase the ownership interest in the Project of the
Defaulting Tenant in Common in accordance with Sections 7.3 and 9.1 of this
Agreement. Notwithstanding anything to the contrary contained in this

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Agreement, in no event shall any loans among any Tenants in Common exist or be
deemed to exist at any time that the Greenwich Capital Loan or any portion
thereof is outstanding.

        5.      SALE OR ENCUMBRANCE OF PROJECT.

                5.1     SALE. In accordance with the Management Agreement, the
Property Manager shall be entitled to seek and negotiate the terms of (a)
permanent and other financing for the Project, including Loans, (b) the sale of
the Project (or portions thereof) to third-party purchasers (a "Sale"), and (c)
any lease of all or any portion of the Project. Any Loan and any sale, exchange,
transfer, lease or release of all or a portion of the Project shall be subject
to unanimous approval of the Tenants in Common, which approval shall be as set
forth in Section 2.2.1. Any such written request of the Property Manager shall
be accompanied by a copy of a bona fide offer to purchase, a loan commitment
letter setting forth all the material terms of the transaction or the principal
lease terms.

                5.2     SALE PROCEEDS. To the extent necessary, the proceeds of
a Sale shall (i) first, be, used to pay in full any Loans, (ii) second, be used
to pay all outstanding costs and expenses incurred in connection with the
holding, marketing and sale of the Project and (iii) third, any proceeds of a
Sale remaining after payment of the items set forth above shall be paid as
provided in Section 3.

        6.      POSSESSION. The Tenants in Common intend to lease the Project at
all times and no Tenant in Common shall have the right to occupy or use the
Project at any time during the term of this Agreement.

        7.      TRANSFER OR ENCUMBRANCE.

                7.1     TRANSFER. Each Tenant in Common may sell, transfer,
convey, pledge, encumber or hypothecate its interest in the Project or any part
thereof (each a "Transfer"), provided that any transferee shall take such
interest subject to this Agreement and the Management Agreement, to the extent
the Management Agreement is in effect at the time of the Transfer, and the
transferor and transferee shall execute and cause to be recorded an assignment
and assumption agreement ("Assumption Agreement") whereby (i) the transferor
assigns to the transferee all of its right, title and interest in and to this
Agreement and the Management Agreement; and (ii) the transferee assumes and
agrees to perform faithfully and to be bound by all of the terms, covenants,
conditions, provisions and agreements of this Agreement and the Management
Agreement with respect to the undivided interest to be transferred. Upon
execution and recordation of such Assumption Agreement the transferor shall be
relieved of all liability under this Agreement accruing after the date of
recordation of the Assumption Agreement and the transferee shall become a party
to this Agreement without further action by the other Tenants in Common. The
Tenants in Common acknowledge that Behringer is selling undivided interests in
the Project pursuant to the Confidential Private Placement Memorandum of Tenant
in Common Interests in Colorado Building dated July 8, 2004. Each Tenant in
Common shall be responsible for compliance with applicable securities laws with
respect to any sale of its interest in the Project.

                7.2     RIGHT OF FIRST OFFER. If a Tenant in Common (a "Selling
Tenant") desires to sell its interest in the Project, then such Selling Tenant
shall first allow the Company or its affiliates or assigns, and second the
Tenants in Common other than the Selling Tenant (each an "Offeror" and
collectively the "Offerors") to make an offer to purchase the Selling Tenant's
interest pursuant to the terms and conditions set forth in this Section 7.2. If
a Selling Tenant desires to sell its interest in the Project, such Selling
Tenant shall provide written notice (the "Notice") of its intent to sell its
interest to each Offeror. The Company or its affiliates or its assigns shall
first have the right, within fifteen (15) days after receipt of such Notice
pursuant to Section 10.8, to deliver a written offer to the Selling Tenant to
purchase the Selling Tenant's interest in the Project. If the Selling Tenant
does not accept an offer

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from the Company or its affiliates or assigns within fifteen (15) days after
receipt of the Notice pursuant to Section 10.8 then each Tenant in Common other
than the Selling Tenant shall have the right within the next fifteen (15) days
after the end of the first fifteen (15) day period, to deliver an offer to the
Selling Tenant to purchase the Selling Tenants interest in the Project for a
price that is greater than the price offered by the Company or its affiliates or
assigns. Each Tenant in Common shall be entitled to purchase a portion of the
Selling Tenant's interest in proportion to their undivided interest in the
Project. If any Tenant in Common elects not to purchase his or her share of the
Selling Tenant's interest in the Project, then the other Tenants in Common shall
be entitled to purchase additional interests based on their undivided interest
in the Project. If the Selling Tenant does not accept the offers from either the
Company or its affiliates or assigns or the Tenants in Common other than the
Selling Tenant for any portion of the Selling Tenant's interest in the Project,
then the Selling Tenant shall be free to sell its interest (or remaining
interest) in the Project to a purchaser other than an Offeror; provided that the
sale of the Selling Tenant's interest to a purchaser (other than an Offeror) is
(a) for a price greater than any purchase price offered by an Offeror and not
accepted by the Selling Tenant pursuant to this Section 7.2, (b) in compliance
with the terms of any Loan, and (c) completed within 120 days of such Selling
Tenant's refusal of the offer from either the Company or its affiliates or
assigns or the Tenants in Common other than the Selling Tenant. If such sale is
not completed within such 120 day period, the Selling Tenant must again provide
each Offeror with its right of first offer granted hereunder if is wishes to
sell its interest in the Project. Any offer provided hereunder by the Company or
a Tenant in Common and any acceptance of such an offer shall be irrevocable and
may be enforced through an action for specific performance without the necessity
of posting bond. The closing of any such offer shall occur not later than 90
days after the date of acceptance at the offices of the Company. The provisions
of this Section shall not apply to the sale of any Tenant in Common's interest
if the process for purchase of such interest has begun under any other provision
of this Agreement, including under Section 7.3, 7.4, 8.1 or 9, and this Section
may not be invoked after any such process is begun unless and until that process
is abandoned.

                7.3     PURCHASE OPTION OF DISSENTING OR DEFAULTING TENANT IN
COMMON'S INTEREST. The Tenants in Common agree that the Company or any of its
affiliates or assigns shall have the right, while this Agreement remains in
effect, to purchase a Dissenting Tenant in Common's (as defined below) interest
or a Defaulting Tenant in Common's (as defined below) interest in the Project as
set forth in this Section 7.3. A "Dissenting Tenant in Common" shall mean a
Tenant in Common who votes against or fails to consent to any item that requires
the unanimous approval or consent of the Tenants in Common pursuant to the terms
of this Agreement when Tenants in Common holding at least 50% of the undivided
interests in the Project have voted or provided consent for such action. A
"Defaulting Tenant in Common" shall mean a Tenant in Common who is in default
under any Loan or any documents in respect of any such Loan ("Loan Documents"),
the Management Agreement or this Agreement. In order to execute this option, the
Company or its affiliates or assigns shall provide written notice of its
election to exercise this option (i) if to a Dissenting Tenant in Common at any
time prior to 45 days after the approval period for such vote or consent has
terminated as provided in any request for such vote or consent or (ii) if to a
Defaulting Tenant in Common during the period such Defaulting Tenant in Common
is in default and for a period of thirty (30) days thereafter. In the event that
the Company or its affiliates or assigns exercise this purchase option, all of
the Dissenting Tenant in Common's or Defaulting Tenant in Common's right, title
and interest in its Interest shall transfer to the Company or its affiliates or
assigns as of the date of the election to exercise the purchase option is
received by the Dissenting Tenant in Common or Defaulting Tenant in Common
pursuant to Section 10.8, and the Company or its affiliates or assigns shall own
all right, title and interest to such Interest as of such date; provided,
however, the Company or its affiliates or assigns may delay the transfer of the
Interest for any length of time as specified in its election to exercise the
purchase option up and through the payment date and provided, further, that the
transfer, and effective date of such transfer, shall be subject to any consent
of the any lender under any Loan (a "Lender"), if required. Subject to such
Lender consent, the exercise of any

                                       6
<PAGE>

option hereunder shall be irrevocable and may be enforced through an action for
specific performance without the necessity of posting bond. The purchase price
of the Dissenting Tenant in Common or the Defaulting Tenant in Common's interest
shall be equal to the Fair Market Value of the Interest (as defined in Section
8.1 of this Agreement) of the Dissenting Tenant in Common or the Defaulting
Tenant in Common. Such purchase price sale shall be paid by the Company or its
affiliates or their assigns within 30 days of the determination of the Fair
Market Value of the Project, and the obligation to pay the purchase price shall
bear interest at the short term Applicable Federal Rate from the date of
transfer through the payment date. The purchaser and seller shall begin
negotiation of the Fair Market Value of the Project within fifteen (15) days
after the date of the written notice from the Company or its affiliates or
assignee and shall follow the procedures set forth in Section 8.1; provided,
however, in the event that a simultaneous transaction results in multiple
Dissenting Tenants in Common or Defaulting Tenants in Common, such multiple
Dissenting Tenants in Common or Defaulting Tenants in Common shall collectively
be treated as the seller for purposes of the determination of the Fair Market
Value of the Project and the procedures set forth in Section 8.1. The allocation
of the costs and liabilities shall be subject to the terms set forth in Section
8.1. In the event a Defaulting Tenant in Common's Interest is purchased pursuant
to this Section 7.3 and the Defaulting Tenant in Common is liable to any Lender
for its losses or for any principal or interest of its Loan as a result of the
Defaulting Tenant in Common's violation of a non-recourse carve-out or springing
recourse under the Loan Documents, the Defaulting Tenant in Common hereby
authorizes the Company to withhold from the payment of the purchase price an
amount equal to such lender losses or principal or interest and to pay such
amounts directly to the Lender under the applicable Loan on behalf of the
Defaulting Tenant in Common.

                7.4     PURCHASE OPTION BY THE COMPANY. In the event Behringer
Harvard REIT I, Inc. or any other real estate fund affiliated with or directly
or indirectly sponsored by Behringer Harvard Holdings, LLC (a "BH Fund") becomes
the direct or indirect member of the Company, the Company or its affiliates or
assigns shall have the option, but not the obligation, to purchase all of the
Tenants in Common's undivided interests in the Project as set forth in this
Section 7.4 beginning no sooner than the earlier of (i) one year prior to the
end of the Greenwich Capital Loan term, (ii) the announcement by BH Fund of its
intention to liquidate its assets, or (iii) the announcement by the BH Fund of
its intention to liquidate its investment portfolio or list its equity
securities on any national securities exchange or the NASDAQ stock market
(collectively, an "Exchange"), and in each case any time thereafter. In order to
exercise this option, the Company or its affiliates or assigns shall provide
written notice of its election to so exercise to the Tenants in Common. The
consummation of the purchase of Interests under the option granted in this
Section may be made contingent upon the occurrence of some other event (the
"Contingent Event") if so provided in the notice referred to in the preceding
sentence; provided that the notice shall be deemed rescinded if the specified
event fails to occur within 180 days. Any such rescission shall not prevent a
subsequent exercise of the option granted under this Section. The Company may,
in its sole and absolute discretion, offer the Tenants in Common the option to
exchange their Interest for equity securities of the BH Fund or, if applicable,
its umbrella partnership (the "Exchange Securities") at an amount equal to the
Fair Market Value of the Interest (as defined in Section 8.1 of this Agreement)
and at then current fair market value of the BH Fund shares or units. The fair
market value of such Exchange Securities shall be the average daily closing
price of such securities on the main Exchange on which on which they are listed
for the five trading days after the date of the Company's notice of exercise of
the option granted in this Section, or if not so listed and the BH Fund is
offering the Exchange Security to the public in connection with its listing on
an Exchange, the offering price for the Exchange Securities in such offering, or
if not so listed, as last established by an independent process in the ordinary
course by the BH Fund or, in the BH Fund's sole discretion, an appraisal by an
independent appraiser for the purpose of establishing such fair market value in
connection with the exercise of the option granted by this Section. For
valuation purposes, the value of any umbrella partnership units of a BH Fund
shall be the value established for the common stock of such BH Fund. In the
event that the Company exercises the option and does not offer the Tenants in
Common the option to exchange their Interest for Exchange

                                       7
<PAGE>

Securities in the BH Fund or a Tenant in Common elects not to exchange its
Interest for Exchange Securities in the BH Fund, the purchase price shall be
paid in cash. The purchase price of each Tenant in Common's interests shall be
equal to or greater than the Fair Market Value of the Interest of such Tenant in
Common. Such purchase price shall be paid by the Company or its affiliates or
assigns within 30 days of the determination of the Fair Market Value of the
Project or, if applicable the date of the occurrence of the Contingent Event,
and the obligation to pay the purchase price shall bear interest at the short
term Applicable Federal Rate from the date of transfer through the payment date.
The Interest shall be transferred to the Company or its affiliates or assigns as
of the date of notice of such election pursuant to Section 10.8 or, if
applicable, the date of the occurrence of the Contingent Event; provided,
however, the Company or its affiliates or assigns may delay the transfer of the
Interest for any length of time as specified in its notice of election to
exercise the purchase option up and through the payment date and provided,
further, that the transfer, and effective date of such transfer, shall be
subject to any consent of any Lender, if required. The Company or its affiliates
or assigns shall obtain an appraisal of the Fair Market Value of the Project,
and shall set the purchase price of each Tenant in Common's interest at or
greater than the appraised value. If one or more Tenants in Common object to the
purchase price determined by the Company or its affiliates or assigns, such
Tenants in Common shall by action of a majority in Interests of such Tenants in
Common appoint a second appraiser within fifteen (15) days after the date of the
written notice from the Company or its affiliates or assigns. The appraiser
appointed by the Company or its affiliates or assigns and the appraiser
appointed by the Tenants in Common shall then choose a third appraiser. The
decision of the third appraiser as to the Fair Market Value of each Interest
shall be the purchase price for this option. The Company or its affiliates or
assigns shall then have the right to elect to proceed with or withdraw its
exercise of the option.

        8.      RIGHT OF PARTITION.

                8.1     Subject to Section 8.2, the Tenants in Common agree that
any Tenant in Common and any of its successors-in-interests shall have the
right, while this Agreement remains in effect, to have the Project partitioned,
and to file a complaint or institute any proceeding at law or in equity to have
the Project partitioned in accordance with and to the extent provided by
applicable law. The Tenants in Common acknowledge that partition of the Project
may result in a forced sale by all of the Tenants in Common. To avoid the
inequity of a forced sale and the potential adverse effect on the investment by
the Tenants in Common, the Tenants in Common agree that, as a condition
precedent to filing a partition action, the Tenant in Common filing such action
("Seller") shall first make a written offer ("Offer") to sell its undivided
interest first to the Company or its affiliates or assigns and second to the
other Tenants in Common at a price equal to the Fair Market Value of the
Interest (as defined below) of Seller's undivided interest. If the Company or
its affiliates or assigns do not accept such Offer, then the other Tenants in
Common shall be entitled to purchase a portion of the Seller's interest in
proportion to their undivided interest in the Project at a price equal to the
Fair Market Value of the Interest. If any Tenant in Common elects not to
purchase his or her share of the Seller's interest, the other Tenants in Common
shall be entitled to purchase additional interests based on their undivided
interest in the Project. "Fair Market Value of the Interest" shall mean the fair
market value of Seller's undivided interest (determined by multiplying the
partitioning Tenant in Common's percentage interest in the Project on the date
of the Offer by the Fair Market Value of the Project reduced by (i) liabilities
secured by the Project or liabilities taken subject to, (ii) Seller's
proportionate share of any fee or other amount that would be payable to the
Property Manager or any affiliates (including any real estate commission) under
the Management Agreement upon the sale of the Project at a price equal to the
Fair Market Value of the Project and (iii) selling, prepayment (to the extent
reasonably anticipated to be incurred by the other Tenants in Common) or other
costs that would apply in the event the Project was sold on the date of the
Offer) as determined in accordance with the procedures set forth below,
including any unpaid advances made pursuant to Section 4.2 on behalf of Seller.
The Company or its affiliates or assigns shall have twenty (20) days after
delivery of the Offer to accept the Offer. If the Company or its affiliates or
assigns do not accept the offer within such twenty (20) day period, the other
Tenants in Common shall have the right within the next twenty (20) days to
accept the Offer. If the Company or its affiliates or assigns

                                       8
<PAGE>

or any or all of the other Tenants in Common ("Purchaser") accept the Offer,
Seller and Purchaser shall commence negotiation of the Fair Market Value of the
Project within fifteen (15) days after the Offer is accepted. If the parties do
not agree, after good faith negotiations, within ten (10) days, then each party
shall submit to the other a proposal containing the Fair Market Value of the
Project the submitting party believes to be correct ("Proposal"). If either
party fails to timely submit a Proposal, the other party's submitted proposal
shall determine the Fair Market Value of the Project. If both parties timely
submit Proposals, then the Fair Market Value of the Project shall be determined
by final and binding arbitration in accordance with the procedures set forth
below. The parties shall meet within seven (7) days after delivery of the last
Proposal and make a good faith attempt to mutually appoint a certified MAI real
estate appraiser as an arbitrator who shall have been active full-time over the
previous five (5) years in the appraisal of comparable properties located in the
county in which the Project is located to act as the arbitrator. If the parties
are unable to agree upon a single arbitrator, then the parties each shall,
within five (5) days after the meeting, select an arbitrator that meets the
foregoing qualifications. The two (2) arbitrators so appointed shall, within
fifteen (15) days after their appointment, appoint a third arbitrator meeting
the foregoing qualifications. The determination of the arbitrator(s) shall be
limited solely to the issue of whether Seller's or Purchaser's Proposal most
closely approximates the Project's fair market value. The decision of the single
arbitrator or of the arbitrator(s) shall be made within thirty (30) days after
the appointment of a single arbitrator or the third arbitrator, as applicable.
The arbitrator(s) shall have no authority to create an independent structure of
fair market value or prescribe or change any or several of the components or the
structure thereof; the sole decision to be made shall be which of the parties'
Proposals shall determine the Fair Market Value of the Project. The decision of
the single arbitrator or majority of the three (3) arbitrators shall be binding
upon the parties. If either party fails to appoint an arbitrator within the time
period specified above, the arbitrator appointed by one of them shall reach a
decision which shall be binding upon the parties. The cost of the arbitrators
shall be paid equally by Seller and Purchaser. The arbitration shall be
conducted in Dallas County, Texas, in accordance with the Texas Arbitration Act,
ss. 171.001 et. Seq. of the Texas Civil Practice and Remedies Code, as modified
by this Agreement. The parties agree that Federal Arbitration Act, Title 9 of
the United States Code, shall not apply to any arbitration hereunder. The
parties shall have no discovery rights in connection with the arbitration. The
decision of the arbitrator(s) may be submitted to any court of competent
jurisdiction by the party designated in the decision. The party designated in
the decision shall submit to the superior court a form of judgment incorporating
the decision of the arbitrator(s), and such judgment, when signed by a judge of
the superior court, shall become final for all purposes and shall be entered by
the clerk of the court on the judgment roll of the court. If one party refuses
to arbitrate an arbitrable dispute and the party demanding arbitration obtains a
court order directing the other party to arbitrate, the party demanding
arbitration shall be entitled to all of its reasonable attorneys' fees and costs
in obtaining such order, regardless of which party ultimately prevails in the
matter. In addition, if one party refuses arbitration and is subsequently
ordered by a court to arbitrate, such party shall also pay all of the
arbitration costs and expenses. By executing this Agreement each Tenant in
Common is agreeing to have any dispute arising out of the matters included in
the arbitration of disputes provision decided by neutral arbitration as provided
by Texas law and each Tenant in Common is giving up its rights might possess to
have the dispute litigated in a court or jury trial. By executing this
Agreement, each Tenant in Common is giving up its judicial rights to discovery
and appeal. If a Tenant in Common refuses to submit to arbitration after
agreeing to this provision, the Tenant in Common may be compelled to arbitrate
under the authority of the Texas Arbitration Act, ss. 171.001 et. Seq. of the
Texas Civil Practice and Remedies Code. Each Tenant in Common's agreement to
this arbitration provision is voluntary. The closing of the purchase of Seller's
interest shall occur at a mutually agreeable title company where the Project is
located within 30 days from the date a Fair Market Value of the Project is
determined, whether by agreement or arbitration. Closing costs and prorations
shall be allocated as is standard practice where the Project is located. The
Purchaser shall take Seller's interest subject to the liabilities included in
the determination

                                       9
<PAGE>

of Fair Market Value of the Project secured by the Project and the Management
Agreement which may include unpaid fees due to the Property Manager. For
purposes of this Section 8.1, in the event that multiple Tenants in Common
simultaneously have on file a partition action, such multiple Tenants in Common
shall collectively be treated as the Seller in applying the procedures set forth
herein to determine the Fair Market Value of the Project.

                8.2     Notwithstanding anything to the contrary in Section 8.1,
so long as the Greenwich Capital Loan or any portion thereof is outstanding,
each Tenant in Common agrees that it will not seek or be entitled to seek and
obtain a partition of all or any part of the Project without first obtaining the
prior written consent of Greenwich. Accordingly, each Tenant in Common expressly
waives any right it may have to partition the Project or any part thereof,
whether such rights arise under the law of the District of Columbia, or
otherwise, unless Greenwich Capital has consented in writing to such party's
exercise of such rights.

        9.      BANKRUPTCY OPTION.

                9.1     OPTION. If, during the term of this Agreement, a Tenant
in Common is Bankrupt, the Company or its affiliates or assigns shall have the
right, to be exercised by written notice ("Bankruptcy Call Notice") to the
Bankrupt Tenant in Common, to purchase all of the Bankrupt Tenant in Common's
interest in the Project. Upon receipt of the Bankruptcy Call Notice, the
Bankrupt Tenant in Common shall be obligated to provide the Company or its
affiliates or assigns or in the event that the Company or its affiliates or
assigns do not elect to exercise the option within 20 days of the receipt of the
Bankruptcy Call Notice, the other Tenants in Common an option to purchase the
Bankrupt Tenant in Common's entire interest in the Project for the Fair Market
Value of the Bankrupt Tenant in Common's interest in the Project as determined
under Section 8.1; provided, however, in the event that a simultaneous
transaction results in multiple Bankrupt Tenants in Common, such Bankrupt
Tenants in Common shall collectively be treated as the seller for purposes of
the determination of the Fair Market Value of the Project and the procedures set
forth in Section 8.1. Such purchase and sale shall be closed within 30 days of
the determination of the Fair Market Value of the Project and such Interest
shall be transferred to the Company or its affiliates or assigns as of the date
of the election to exercise the option is received by the Bankrupt Tenant in
Common pursuant to Section 10.8; provided, however, the Company or its
affiliates or assigns may delay the transfer of the Interest for any length of
time as specified in its election to exercise the purchase option up and through
the payment date and provided, further, that the transfer, and effective date of
such transfer, shall be subject to any consent of any lender, if required. The
allocation of the costs and liabilities shall be subject to the terms set forth
in Section 8.1.

                9.2     BANKRUPT. For purposes of this Agreement, a Tenant in
Common shall be considered Bankrupt if such Tenant in Common: (1) is unable to
pay debts as they come due, including any debt associated with the Project; (2)
admits in writing to his or her inability to pay debts as they due, including
any debt associated with the Project; (3) makes a general assignment for the
benefit of creditors; (4) files any petition or answer seeking to adjudicate it
bankrupt or insolvent; (5) seeks liquidation, winding up, reorganization,
arrangement, adjustment, protection, relief or composition of its debts; (6)
seeks, consents to or acquiesces in the entry of an order for relief or the
appointment of a receiver, trustee, custodian, or other similar official or for
any substantial part of its property; (7) the entry of an order for relief or
approving a petition for relief or reorganization, arrangement, composition,
readjustment, liquidation, dissolution or similar relief under any present or
future bankruptcy, insolvency or similar statute, law or regulation or the
filing of any such petition that is not dismissed in 90 days; (8) entry of an
order appointing a trustee, custodian, receiver or liquidator of all or any
substantial portion of its property, which order is not dismissed within 60 days
or (9) is considered bankrupt under the Loan Documents.

                                       10
<PAGE>

                9.3     RIGHT OF FIRST REFUSAL. If, under federal bankruptcy
law, similar debtor relief laws, or other laws affecting the Project, the option
to purchase granted under this Section 9 is voided or declared unenforceable,
the Company or its affiliates or assigns shall have a right of first refusal to
buy any interest in the Project of a Bankrupt Tenant in Common in the event of
any proposed transfer by a trustee, receiver, conservator, liquidator, guardian,
or other transferee. Such right of first refusal shall provide that the Company
or its affiliates or assigns may purchase the Bankrupt Tenant in Common's
interest in the Project at the same price and on the same terms as such Project
is proposed to be sold by such trustee, receiver, conservator, liquidator,
guardian or other transferee.

        10.     GENERAL PROVISIONS.

                10.1    MUTUALITY, RECIPROCITY, RUNS WITH THE LAND. All
provisions, conditions, covenants, restrictions, obligations and agreements
contained herein or in the Management Agreement are made for the direct, mutual
and reciprocal benefit of each and every part of the Project; shall be binding
upon and shall inure to the benefit of each of the Tenants in Common and their
respective heirs, executors, administrators, successors, assigns, devisees,
representatives, lessees and all other persons acquiring any undivided interest
in the Project or any portion thereof whether by operation of law or any manner
whatsoever (collectively, "Successors"); shall create mutual, equitable
servitudes and burdens upon the undivided interest in the Project of each Tenant
in Common in favor of the interest of every other Tenant in Common; shall create
reciprocal rights and obligations between the respective Tenants in Common,
their interests in the Project, and their Successors; and shall, as to each of
the Tenants in Common and their Successors operate as covenants running with the
land, for the benefit of the other Tenants in Common pursuant to applicable law.
It is expressly agreed that each covenant contained herein or in the Management
Agreement (i) is for the benefit of and is a burden upon the undivided interests
in the Project of each of the Tenants in Common, (ii) runs with the undivided
interest in the Project of each Tenant in Common and (iii) benefits and is
binding upon each Successor owner during its ownership of any undivided interest
in the Project, and each owner having any interest therein derived in any manner
through any Tenant in Common or Successor. Every person or entity who now or
hereafter owns or acquires any right, title or interest in or to any portion of
the Project is and shall be conclusively deemed to have consented and agreed to
every restriction, provision, covenant, right and limitation contained herein or
in the Management Agreement, whether or not such person or entity expressly
assumes such obligations or whether or not any reference to this Agreement or
the Management Agreement is contained in the instrument conveying such interest
in the Project to such person or entity. The Tenants in Common agree that any
Successor shall become a party to this Agreement and the Management Agreement
upon acquisition of an undivided interest in the Project as if such person was a
Tenant in Common initially executing this Agreement.

                10.2    BINDING ARBITRATION. Any controversy between the parties
hereto arising out of or related to this Agreement or the breach thereof or an
investment in the tenant in common interests in the Project shall be settled by
arbitration in Dallas County, Texas, in accordance with the rules of The
American Arbitration Association, and judgment entered upon the award rendered
may be enforced by appropriate judicial action. The arbitration panel shall
consist of one member, which shall be the mediator if mediation has occurred or
shall be a person agreed to by each party to the dispute within 30 days
following notice by one party that he or she desires that a matter be
arbitrated. If there was no mediation and the parties are unable within such 30
day period to agree upon an arbitrator, then the panel shall be one arbitrator
selected by the Dallas office of The American Arbitration Association, which
arbitrator shall be experienced in the area of real estate and limited liability
companies and who shall be knowledgeable with respect to the subject matter area
of the dispute. The losing party shall bear any fees and expenses of the
arbitrator, other tribunal fees and expenses, reasonable attorneys' fees of both
parties, any costs of producing witnesses and any other reasonable costs or
expenses incurred by the losing party or the prevailing party or such costs
shall be allocated by the arbitrator. The arbitration panel shall render

                                       11
<PAGE>

a decision within 30 days following the close of presentation by the parties of
their cases and any rebuttal. The parties shall agree within 30 days following
selection of the arbitrator to any prehearing procedures or further procedures
necessary for the arbitration to proceed, including interrogatories or other
discovery; provided, in any event each Tenant in Common shall be entitled to
discovery in accordance with the Texas Arbitration Act, ss. 171.001 et. Seq. of
the Texas Civil Practice and Remedies Code.

                10.3    ATTORNEYS' FEES. If any action or proceeding is
instituted between all or any of the Tenants in Common arising from or related
to or with this Agreement, the Tenant in Common or Tenants in Common prevailing
in such action or proceeding shall be entitled to recover from the other Tenant
in Common or Tenants in Common all of its or their costs of action or
proceeding, including, without limitation, attorneys' fees and costs as fixed by
the court or arbitrator therein.

                10.4    ENTIRE AGREEMENT. This Agreement, together with the
Management Agreement, constitutes the entire agreement between the parties
hereto pertaining to the subject matter hereof and all prior and contemporaneous
agreements, representations, negotiations and understandings of the parties
hereto, oral or written, are hereby superseded and merged herein.

                10.5    GOVERNING LAW. Except as otherwise provided herein, this
Agreement shall be governed by and construed under the internal laws of the
District of Columbia without regard to choice of law rules.

                10.6    VENUE. Any action relating to or arising out of this
Agreement shall be brought only in a court of competent jurisdiction located in
Dallas, Texas.

                10.7    MODIFICATION. No modification, waiver, amendment,
discharge or change of this Agreement shall be valid unless the same is in
writing and signed by the party against which the enforcement of such
modification, waiver, amendment, discharge or change is or may be sought and,
except for amendments occurring as a result of a transfer of a Tenant in Common
Interest that is made pursuant to the loan documents in respect of the Greenwich
Capital Loan (the "Greenwich Capital Loan Documents") is consented to in writing
by Greenwich Capital or, after securitization of the Greenwich Capital Loan,
unless the Property Manager shall have provided written confirmation from each
rating agency that provides a rating in connection with the Greenwich Capital
Loan that such amendment shall not result in any withdrawal, qualification or
downgrade of such rating. Greenwich Capital is expressly intended to be a third
party beneficiary of this Section and shall have the right to enforce the
obligations of the parties hereunder.

                10.8    NOTICE AND PAYMENTS. Any notice to be given or other
document or payment to be delivered by any party to any other party hereunder
shall be addressed to the party for whom intended, as follows:

                To the Tenants in Common at:

                        c/o Behringer Harvard Colorado Building H, LLC
                        1323 North Stemmons Freeway, Suite 224
                        Dallas, Texas 75207

                With a copy to the Tenants in Common at the addresses specified
in Exhibit "A" hereto.

        Any party hereto may from time to time, by written notice to the others,
designate a different address which shall be substituted for the one above
specified. Unless otherwise specifically provided for herein, all notices,
payments, demands or other communications given hereunder shall be in writing

                                       12
<PAGE>

and shall be deemed to have been duly given and received (i) upon personal
delivery, or (ii) as of the third business day after mailing by United States
mail, with postage prepaid, addressed as set forth above, or (iii) the
immediately succeeding business day after deposit with Federal Express or other
similar overnight delivery system.

                10.9    SUCCESSORS AND ASSIGNS. All provisions of this Agreement
shall inure to the benefit of and shall be binding upon the
successors-in-interest, assigns, and legal representatives of the parties
hereto. Any assignee of a Tenant in Common shall be considered a Tenant in
Common.

                10.10   TERM. This Agreement shall commence as of the date of
recordation and shall terminate at such time as the Tenants in Common or their
successors-in-interest or assigns no longer own the Project as
tenants-in-common. In no event shall this Agreement continue beyond December 31,
2025. The bankruptcy, death, dissolution, liquidation, termination, incapacity
or incompetency of a Tenant in Common shall not cause the termination of this
Agreement.

                10.11   WAIVERS. No act of any Tenant in Common shall be
construed to be a waiver of any provision of this Agreement, unless such waiver
is in writing and signed by the Tenant in Common affected. Any Tenant in Common
hereto may specifically waive any breach of this Agreement by any other Tenant
in Common, but no such waiver shall constitute a continuing waiver of similar or
other breaches.

                10.12   COUNTERPARTS. This Agreement may be executed in
counterparts, each of which, when taken together, shall be deemed one fully
executed original.

                10.13   SEVERABILITY. If any portion of this Agreement shall
become illegal, null or void or against public policy, for any reason, or shall
be held by any court of competent jurisdiction to be illegal, null or void or
against public policy, the remaining portions of this Agreement shall not be
affected thereby and shall remain in full force and effect to the fullest extent
permissible by law.

                10.14   APPLICABLE SECURITIES LAWS. NEITHER THE SECURITIES AND
EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR
DISAPPROVED THE SECURITIES OFFERED HEREBY OR PASSED UPON THE ACCURACY OR
ADEQUACY OF ANY DISCLOSURE MADE IN CONNECTION WITH THIS OFFERING. ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. THE SECURITIES OFFERED
HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED,
AND MAY NOT BE TRANSFERRED OR RESOLD EXCEPT AS PERMITTED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, AND APPLICABLE STATE SECURITIES LAWS, PURSUANT TO
REGISTRATION OR EXEMPTION THEREFROM.

                10.15   TIME IS OF THE ESSENCE. Time is of the essence of each
and every provision of this Agreement.

        11.     ADDITIONAL COVENANTS AND AGREEMENTS REGARDING THE GREENWICH
                CAPITAL LOAN.

                11.1    Each Tenant in Common agrees that this Agreement, and
all rights and privileges and remedies of each Tenant in Common hereunder,
including without limitation, (i) any rights of first refusal (including any
such rights arising under Section 363(i) of Chapter 11 of the United States
Bankruptcy Code), purchase options or other similar rights under this Agreement,
are subject and subordinate to the deed of trust and the other loan documents
with respect to the Greenwich Capital Loan ("Loan Documents") and the liens
created thereby, and to all rights of the Lender thereunder. No party may
exercise any remedy provided for herein (including any rights of
indemnification) against any other

                                       13
<PAGE>

party for as long as the Greenwich Capital Loan (or any portion thereof) is
outstanding; provided, however, that as long as no Event of Default (as defined
in the Loan Documents) currently exists, the parties subject to the rights
described above and in Sections 7.3, 7.4, 8 and 9 shall be entitled to exercise
such options.

                11.2    Notwithstanding anything to the contrary contained
herein, each Tenant in Common hereby waives, for so long as the Greenwich
Capital Loan (or any portion thereof) is outstanding, any lien rights, whether
statutory or otherwise, that it may have against the co-tenancy interest of any
other Tenant in Common.

                11.3    For so long as the Greenwich Capital Loan (or any
portion thereof) is outstanding, the Lender shall be a third party beneficiary
of this Agreement.

                11.4    For so long as the Greenwich Capital Loan (or any
portion thereof) is outstanding, this Agreement may not be terminated or
cancelled, modified, changed, supplemented, altered or amended in any manner
whatsoever, without the prior written consent of the Lender except pursuant to
any Permitted Transfers allowed under the Loan Documents.

                11.5    Each Tenant in Common covenants and agrees not to take
any action with respect to the Project or its respective co-tenancy interest in
the Project that would constitute a default under the Greenwich Capital Loan, or
create personal liability for any Tenant in Common under the provisions of the
Loan Documents.

                11.6    This Agreement as it may be amended from time to time in
accordance with the provisions hereof, and all of the terms and conditions
hereof, are hereby made and shall continue to be fully subject and subordinate
in all respects to all of the liens, terms and conditions of the Loan Documents.
Such subordination shall be automatic and no further agreement or document shall
be necessary to effect such subordination but, without detracting from the
automatic nature of such subordination, upon Greenwich Capital's request, each
Tenant in Common shall execute and deliver to Greenwich Capital an instrument of
subordination satisfactory to Greenwich Capital in form and substance.

                11.7    Each Tenant in Common hereby irrevocably assigns to
Greenwich Capital its claim and rights to vote in any bankruptcy or similar
proceeding of any other Tenant in Common.

                11.8    In the event of any conflict or inconsistency between
the provisions of this Section 11 and any other provision of this Agreement, the
provisions of this Section 11 shall control.

        12.     POWER OF ATTORNEY. The Company shall at all times during the
term of this Agreement have a special and limited power of attorney as the
attorney-in-fact for any Tenant in Common whose Interest is to be purchased
pursuant to the option rights granted in Sections 7.3, 7.4, 8.1 and 9, with the
power and authority to act in the name and on behalf of each such Tenant in
Common to execute, acknowledge, and swear to in the execution, acknowledgment
and filing of documents that are not inconsistent with the provisions of this
Agreement and which may include, but is not limited to, any contract for
purchase or sale of real estate, and any deed, deed of trust, mortgage, or other
instrument of conveyance or encumbrance, with respect to the Interests and/or
the Project or any other instrument or document that may be required to
effectuate the sale of the Project or an Interest.

                12.1    This power of attorney may be exercised by the Company
for such Tenant in Common by the signature of the Company acting as
attorney-in-fact for such Tenant in Common, or by

                                       14
<PAGE>

such method as may be required or requested in connection with the recording or
filing of any instrument or other document so executed.

                12.2    This power of attorney shall be irrevocable and shall
survive an assignment by the Tenant in Common of all or any portion of its
undivided interest in the Project. Furthermore, this power of attorney shall
survive the bankruptcy, death, dissolution, liquidation, termination, incapacity
or incompetency of the Tenant in Common.

                12.3    The Company shall promptly furnish to Tenant in Common a
copy of any document executed by the Company pursuant to this power of attorney.

        13.     SUBORDINATION. This Agreement and all of the terms and
provisions hereof shall in all respects be subject to and subordinate to the
terms of any loan documents evidencing and secured by a mortgage or deed of
trust on the Project.

        IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date set forth above.

                                    TENANTS IN COMMON:

                                    BEHRINGER HARVARD COLORADO BUILDING
                                    H, LLC, a Delaware limited liability company

                                    By:
                                       -----------------------------------------
                                        Gerald J. Reihsen, III, Secretary

                                       15
<PAGE>
                                    TIC COLORADO BUILDING 2, LLC, a Delaware
                                    limited liability company

                                    By: Colonial Plaza - A-1 Mini Storage,
                                        L.L.C., a Florida limited liability
                                        company, its sole member

                                        By:
                                           -------------------------------------
                                           Luciano D. Mendes, its sole member

<PAGE>

                                    TIC COLORADO BUILDING 3, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       Carol P. Duncan, its sole member

<PAGE>

                                    TIC COLORADO BUILDING 4, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       James A. Dunn, as Trustee of the James
                                       A. Dunn Inter Vivos Trust, its sole
                                       member

<PAGE>

                                    TIC COLORADO BUILDING 5, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       Fred B. Marsh, as Trustee of the Marsh
                                       Revocable Trust of 2002, its sole member

                                    By:
                                       -----------------------------------------
                                       Mary A. Marsh, as Trustee of the Marsh
                                       Revocable Trust of 2002, its sole member

<PAGE>

                                    TIC COLORADO BUILDING 6, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       John L. Nellis, its sole member

<PAGE>

                                    TIC COLORADO BUILDING 7, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       Christine T. McLaughlin, its sole member

<PAGE>

                                    TIC COLORADO BUILDING 8, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       Thomas Scheidt, its sole member

<PAGE>

                                    TIC COLORADO BUILDING 10, LLC, a Delaware
                                    limited liability company

                                    By:
                                       -----------------------------------------
                                       Robert Dunn, its sole member

                                    By:
                                       -----------------------------------------
                                       Linda Dunn, its sole member

<PAGE>

STATE OF TEXAS         )
                       ) ss:
COUNTY OF DALLAS       )

        On ____________, 200__, before me, _________________________(insert name
of notary), personally appeared Gerald J. Reihsen, personally known to me (or
proved to me on the basis of satisfactory evidence) to be the person(s) whose
name(s) is/are subscribed to the within instrument and acknowledged to me that
he/she/they executed the same in his/her/their authorized capacity(ies), and
that by his/her/their signature(s) on the instrument the person(s), or the
entity upon behalf of which the person(s) acted, executed the instrument.

        WITNESS my hand and official seal.

                                          --------------------------------------
                                          Notary Public (Signature)

<PAGE>

                                                         [For Tenants in Common]

STATE OF ________________     )
                              ) ss:
COUNTY OF _______________     )

        On ____________, 200__, before me, _________________________(insert name
of notary), personally appeared ______________________________ (insert name of
tenant in common), personally known to me (or proved to me on the basis of
satisfactory evidence) to be the person(s) whose name(s) is/are subscribed to
the within instrument and acknowledged to me that he/she/they executed the same
in his/her/their authorized capacity(ies), and that by his/her/their
signature(s) on the instrument the person(s), or the entity upon behalf of which
the person(s) acted, executed the instrument.

        WITNESS my hand and official seal.

                                          --------------------------------------
                                          Notary Public (Signature)

STATE OF ________________     )
                              ) ss:
COUNTY OF _______________     )

        On ____________, 200__, before me, _________________________(insert name
of notary), personally appeared ______________________________ (insert name of
tenant in common), personally known to me (or proved to me on the basis of
satisfactory evidence) to be the person(s) whose name(s) is/are subscribed to
the within instrument and acknowledged to me that he/she/they executed the same
in his/her/their authorized capacity(ies), and that by his/her/their
signature(s) on the instrument the person(s), or the entity upon behalf of which
the person(s) acted, executed the instrument.

        WITNESS my hand and official seal.

                                          --------------------------------------
                                          Notary Public (Signature)

<PAGE>

SCHEDULES

Schedule A     Tenants in Common

                                 EXHIBITS

Exhibit "A"    Tenants in Common and Percentage Interests

Exhibit "B"    Description of the Project

Exhibit "C"    Management Agreement

<PAGE>

                                   SCHEDULE A

                                TENANTS IN COMMON

TIC Colorado Building 2 LLC
TIC Colorado Building 3, LLC
TIC Colorado Building 4, LLC
TIC Colorado Building 5, LLC
TIC Colorado Building 6, LLC
TIC Colorado Building 7, LLC
TIC Colorado Building 8, LLC
TIC Colorado Building 10, LLC

<PAGE>

                                   EXHIBIT "A"

                   TENANTS IN COMMON AND PERCENTAGE INTERESTS

Tenant in Common                                        Percentage Interest
----------------                                        -------------------

Behringer Harvard Colorado Building H, LLC                   79.475165%

TIC Colorado Building 2, LLC                                 4.561126%

TIC Colorado Building 3, LLC                                 2.016129%

TIC Colorado Building 4, LLC                                 2.016129%

TIC Colorado Building 5, LLC                                 2.016129%

TIC Colorado Building 6, LLC                                 2.016129%

TIC Colorado Building 7, LLC                                 2.016129%

TIC Colorado Building 8, LLC                                 3.100806%

TIC Colorado Building 10, LLC                                2.782258%

<PAGE>

                                   EXHIBIT "B"

                           DESCRIPTION OF THE PROJECT

<PAGE>

                                   EXHIBIT "C"

                              MANAGEMENT AGREEMENT

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