GUARANTY AGREEMENT

EXHIBIT 10.6

This GUARANTY AGREEMENT (this “Guaranty”) is made as of the 15 day of November, 2007, by BEHRINGER HARVARD OPPORTUNITY REIT I, INC., a Maryland corporation (singly or collectively, “Guarantor”), in favor of BANK OF AMERICA, N.A., a national banking association (together with its successors and assigns, “Administrative Agent”), as Administrative Agent on behalf of itself and each lender from time to time made a party to the Loan Agreement (collectively, the “Lenders”).

PRELIMINARY STATEMENTS

Administrative Agent, National City Bank, as Syndication Agent, the Lenders and The Private Residences, LLC, a Delaware limited liability company (“Borrower”), have entered into, are entering into concurrently herewith, or contemplate entering into, that certain Construction Loan Agreement dated of even date herewith (herein called, as it may hereafter be modified, supplemented, restated, extended, or renewed and in effect from time to time, the “Loan Agreement”), which Loan Agreement sets forth the terms and conditions of a loan (the “Loan”) to Borrower for the redevelopment and construction of approximately eighty-six (86) residential for sale condominium units within the Condominium Tower (as defined in the Loan Agreement) located in St. Louis, Missouri, as more particularly described in the Loan Agreement and identified therein as the Land. The Loan is secured in part by the Deed of Trust as defined in the Loan Agreement (herein called, as it may hereafter be modified, supplemented, restated, extended or renewed and in effect from time to time, the “Deed of Trust”).

A condition precedent to Lenders’ obligation to make the Loan to Borrower is Guarantor’s execution and delivery to Lenders of this Guaranty.

The Loan is, or will be, evidenced by one or more Promissory Notes issued by Borrower pursuant to the Loan Agreement, executed by Borrower and payable to the order of each Lender, in the aggregate principal amount of $58,800,000.00 (such notes, as they may hereafter be renewed, extended, supplemented, increased or modified and in effect from time to time, and all other notes given in substitution therefor in accordance with the Loan Agreement, or in modification, renewal, or extension thereof, in whole or in part, is herein called the “Note”).

Borrower and Swap Bank may from time to time enter into one or more “Swap Transactions” as defined in the Deed of Trust.

Any capitalized term used and not defined in this Guaranty shall have the meaning given to such term in the Loan Agreement. This Guaranty is one of the Loan Documents described in the Loan Agreement.

STATEMENT OF AGREEMENTS

For good and valuable consideration, the receipt and adequacy of which are hereby acknowledged, and as a material inducement to Lenders to extend credit to Borrower, Guarantor hereby guarantees to Administrative Agent and the Lenders the prompt and full payment and performance of the indebtedness and obligations described below in this Guaranty (collectively

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called the “Guaranteed Obligations”), this Guaranty being upon the following terms and conditions:

1. Guaranty of Payment.

(a) Guarantor hereby unconditionally and irrevocably guarantees to Lenders the punctual payment when due, whether by lapse of time, by acceleration of, maturity, or otherwise, of the following (collectively called, the “Indebtedness”):

(i) Principal Liability Amount; plus

(ii) Accrued Interest Amount; plus

(iii) Personal Liability Amount; plus

(iv) Fees, late charges, costs, expenses, indemnification indebtedness, and other sums of money now or hereafter due and owing, arising out of or relating to the enforcement of this Guaranty.

This Guaranty covers the Indebtedness, whether presently outstanding or arising subsequent to the date hereof, including all amounts advanced by Lenders in stages or installments. The guaranty of Guarantor as set forth in this Section 1 is a continuing guaranty of payment and not a guaranty of collection. The provisions of this Section do not limit, reduce or affect Guarantor’s obligations with respect to the guaranty of performance in Section 2 below. Guarantor’s liability under this Guaranty shall not be reduced or otherwise affected, except to the extent set forth in the next sentence, by any amount applied against the Indebtedness as a result of the foreclosure or other realization upon any of the security for the Note. To the extent Lenders receive any payments under the Note or any proceeds from foreclosure of or other realization upon of the security for the Note, such payments shall be applied to that portion of the Obligations for which Guarantor has no personal liability for payment, and then (and only after payment in full of the portion of the Obligations for which Guarantor has no personal liability for payment) be applied against the portion of the Obligations for whose payment Guarantor is liable hereunder.

(b) Unless otherwise defined herein, the following capitalized terms when used in this Guaranty shall have the respective meanings set forth below:

“Accrued Interest Amount” means all accrued and unpaid interest on the Indebtedness as of the Satisfaction Date.

“Demand for Payment Notice” means a writing from Administrative Agent to Guarantor setting forth all amounts owed by Guarantor under this Guaranty as of a certain date.

“Personal Liability Amount” means all damages, losses, costs and expenses suffered or incurred by Administrative Agent and the Lenders as a result of (i) fraud by Borrower, Guarantor or any employee of Borrower or Guarantor or any agent of Borrower or Guarantor if acting for, on behalf of or under the direction of Borrower,

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Guarantor or any employee or principal of Borrower or Guarantor; (ii) any untruth or inaccuracy in any material respect, which untruth or inaccuracy was known to Borrower when delivered, of any instrument or information delivered to Administrative Agent or any Lender by or on behalf of Borrower as a condition to or in connection with the execution of the Loan Agreement or to satisfy any condition set forth in the Loan Agreement or in any Loan Document; (iii) any representation or warranty of Borrower that is knowingly untrue or inaccurate in any material respect or knowingly fails to include any fact or information necessary to keep the information contained therein from being materially misleading; (iv) the misapplication or misuse by Borrower or anyone acting for or on behalf of Borrower of any insurance proceeds or condemnation awards, or any Loan proceeds, contrary to the terms of the Loan Agreement; (v) following written notice of a Default, the failure of Borrower to apply all revenues, rents, issues, accounts, profits, accounts receivable and income of Borrower arising from or in connection with the Project to the normal operating expenses of the Project (which expenses shall not include the payment of any legal fees unless first approved in writing by Administrative Agent or expenses or overhead of Borrower, any direct or indirect owner of Borrower, or Guarantor) and/or any payments due under the Loan; (vi) the failure of Borrower to fully perform and satisfy all of the obligations and liabilities of Borrower under Section 2.16 of the Loan Agreement or any indemnity in the Loan Agreement relating thereto; (vii) all costs, expenses and fees including, but not limited to, court costs and reasonable attorneys’ fees, costs and expenses, arising in connection with any proceedings under Debtor Relief Laws applicable to Borrower or Guarantor; (viii) failure of Borrower to pay all taxes and general and special assessments relating to the Property; (ix) the destruction, theft, damage, disappearance or other loss of any “stored materials” (as defined in Exhibit “F” to the Loan Agreement) to the extent that the Lenders have made advances of the Loan for such stored materials and Borrower failed to comply with the requirements in the Loan Agreement applicable to such stored materials; and (x) a casualty affecting any of the Property to the extent such casualty was not covered by insurance because Borrower failed to carry the insurance required by the Loan Documents or because Borrower failed to pay in full the losses arising from such casualty under any plan of self-insurance of Borrower. Clause (x) of the preceding sentence includes all damages, losses, costs and expenses suffered or incurred by Administrative Agent and Lenders as a result of the earthquake casualty loss being in excess of Borrower’s earthquake insurance.

“Principal Liability Amount” means a portion of the principal amount of the Loan, including any amount advanced by Lenders in payment of any of Borrower’s obligations under any Swap Transactions, equal to $29,400,000.00.

“Satisfaction Date” means the date, on or after the Transfer Date, on which Guarantor pays to Administrative Agent, for the ratable benefit of all Lenders, the Principal Liability Amount and all other sums which are owed by Guarantor under Section 1 of this Guaranty as of such date, as set forth in a Demand for Payment Notice (and to the extent Administrative Agent has not delivered to Guarantor a Demand for Payment Notice as of the Transfer Date, Administrative Agent shall issue such notice within five Business Days following a written request from Guarantor).

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“Transfer Date” means the date, after the occurrence of a Default, on which the Property is transferred as a result of the foreclosure of the Mortgage (as defined in the Loan Agreement) or by deed in lieu of foreclosure; provided, however, if after the occurrence of a Default, Borrower tenders a deed in lieu of foreclosure, in a form acceptable to Administrative Agent, and the Required Lenders refuse to accept such deed in lieu of foreclosure, the Transfer Date shall be the date such deed is tendered to Administrative Agent.

2. Guaranty of Completion. Guarantor additionally hereby unconditionally and irrevocably guarantees to Administrative Agent and the Lenders the timely performance of all obligations of Borrower under the Loan Documents regarding the construction and completion of the Improvements, including without limitation, the obligations to (i) construct the Improvements in accordance with the Loan Agreement, Laws and with the Plans; (ii) to complete the Improvements and cause the Improvements to be ready for occupancy, including obtaining all certificates required by law or the Loan Agreement on or before the Completion Date. If any of such obligations of Borrower are not complied with, in any respect whatsoever, and without the necessity of any notice from Administrative Agent or the Lenders to Guarantor, Guarantor agrees to (i) assume all responsibility for the completion of the Improvements and, at Guarantor’s own cost and expense, cause the Improvements to be fully completed in accordance with the Plans and the Loan Documents; (ii) pay all bills in connection with the construction of the Improvements; and (iii) indemnify and hold Administrative Agent and the Lenders harmless from any and all loss, cost, liability or expense that Administrative Agent or the Lenders may suffer by reason of any such non-compliance. So long as all of such obligations are being performed by Borrower or Guarantor and no Default exists with respect to the obligations of Borrower under the Loan Agreement relating to the construction of the Improvements, Lenders will make the Loan proceeds available under and subject to the terms of the Loan Agreement. After the occurrence of a Default and without limiting the other rights and remedies of Administrative Agent and the Lenders, if Administrative Agent, in its sole and absolute discretion, is dissatisfied with the progress of construction by Borrower and/or Guarantor, then Administrative Agent may, at its option with the consent of the Required Lenders, without notice to Guarantor or anyone else, complete the Improvements either before or after commencement of foreclosure proceedings or before or after exercise by Administrative Agent on behalf of the Lenders of any other right or remedy of the Lenders against Borrower or Guarantor, with such changes or modifications in the Plans as Administrative Agent, on behalf of the other Lenders, deems necessary and expend such sums as Administrative Agent, in its sole and absolute discretion, deems necessary or advisable to complete the Improvements, and Guarantor hereby waives any right to contest any such expenditures by Administrative Agent. The amount of any and all expenditures made by Administrative Agent for the foregoing purposes shall bear interest from the date made until repaid to Administrative Agent, at the Past Due Rate and, together with such interest, shall be due and payable by Guarantor to Administrative Agent upon demand. Administrative Agent and the Lenders do not have and shall never have any obligation to complete the Improvements or take any such action. The obligations and liability of Guarantor under this Section 2 shall not be limited or restricted by the existence of (or any terms of) the guaranty of payment under Section 1.

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3. Primary Liability of Guarantor.

(a) This Guaranty is an absolute, irrevocable and unconditional guaranty of payment and performance. Guarantor shall be liable for the payment and performance of the Guaranteed Obligations as a primary obligor. This Guaranty shall be effective as a waiver of, and Guarantor hereby expressly waives, any and all rights to which Guarantor may otherwise have been entitled under any suretyship laws in effect from time to time, including any right or privilege, whether existing under statute, at law or in equity, to require Administrative Agent, on behalf of the Lenders, to take prior recourse or proceedings against any collateral, security or Person (hereinafter defined) whatsoever.

(b) Guarantor hereby agrees that in the event of (i) default by Borrower in payment or performance of the Guaranteed Obligations, or any part thereof, when such indebtedness or performance becomes due, either by its terms or as the result of the exercise of any power to accelerate; (ii) the failure of Guarantor to perform completely and satisfactorily the covenants, terms and conditions of any of the Guaranteed Obligations; (iii) the death, incompetency, dissolution or insolvency of Guarantor; (iv) the inability of Guarantor to pay debts as they mature; (v) an assignment by Guarantor for the benefit of creditors; (vi) the institution of any proceeding by or against Guarantor in bankruptcy or for a reorganization or an arrangement with creditors, or for the appointment of a receiver, trustee or custodian for any of them or for any of their respective properties; (vii) the determination by Administrative Agent in good faith that a material adverse change has occurred in the financial condition of Guarantor; (viii) the entry of a judgment against Guarantor; (ix) a writ or order of attachment, levy or garnishment is issued against Guarantor; (x) the falsity in any material respect of, or any material omission in, any representation made to Administrative Agent or the other Lenders by Guarantor; or (xi) any transfer of assets of any Guarantor, without the Administrative Agent’s prior consent (except for transfers of assets for estate planning purposes valued at less than $50,000 per year per Guarantor, customary political and charitable contributions, and transfers for which the Guarantor receives consideration substantially equivalent to the fair market value of the transferred asset) (individually and collectively an “Event of Default”); then upon the occurrence of such Event of Default, the Guaranteed Obligations, for purposes of this Guaranty, shall be deemed immediately due and payable at the election of Administrative Agent (with the consent of the Required Lenders), and Guarantor shall, on demand and without presentment, protest, notice of protest, further notice of nonpayment or of dishonor, default or nonperformance, or notice of acceleration or of intent to accelerate, or any other notice whatsoever, without any notice having been given to Guarantor previous to such demand of the acceptance by Administrative Agent of this Guaranty, and without any notice having been given to Guarantor previous to such demand of the creating or incurring of such indebtedness or of such obligation to perform, all such notices being hereby waived by Guarantor, pay the amount due to Administrative Agent and the Lenders or perform or observe the agreement, covenant, term or condition, as the case may be, and pay all damages and all costs and expenses that may arise in consequence of such Default (including, without limitation, all attorneys’ fees and expenses, investigation costs, court costs, and any and all other costs and expenses incurred by Administrative Agent and the Lenders in connection with the collection and enforcement of the Note or any other Loan Document), whether or not suit is filed thereon, or whether at maturity or by acceleration, or whether before or after maturity, or whether in connection with bankruptcy, insolvency or appeal. It shall not be necessary for Administrative Agent, on behalf of the Lenders, in order to enforce such payment or performance by Guarantor, first to institute suit or

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pursue or exhaust any rights or remedies against Borrower or others liable on such indebtedness or for such performance, or to enforce any rights against any security that shall ever have been given to secure such indebtedness or performance, or to join Borrower or any others liable for the payment or performance of the Guaranteed Obligations or any part thereof in any action to enforce this Guaranty, or to resort to any other means of obtaining payment or performance of the Guaranteed Obligations; provided, however, that nothing herein contained shall prevent Administrative Agent or the Lenders from suing on the Note or foreclosing the Deed of Trust or from exercising any other rights thereunder, and if such foreclosure or other remedy is availed of, only the net proceeds therefrom, after deduction of all charges and expenses of every kind and nature whatsoever, shall be applied in reduction of the amount due on the Note and Deed of Trust, and Administrative Agent and the Lenders shall not be required to institute or prosecute proceedings to recover any deficiency as a condition of payment hereunder or enforcement hereof. At any sale of the Property or other collateral given for the Indebtedness or any part thereof, whether by foreclosure or otherwise, any Lender may at its discretion purchase all or any part of the Property or collateral so sold or offered for sale for its own account and may, in payment of the amount bid therefor, deduct such amount from the balance due it pursuant to the terms of the Note and Deed of Trust.

(c) Suit may be brought or demand may be made against Borrower or against all parties who have signed this Guaranty or any other guaranty covering all or any part of the Guaranteed Obligations, or against any one or more of them, separately or together, without impairing the rights of Administrative Agent and the Lenders against any party hereto. Any time that Administrative Agent, on behalf of the Lenders, is entitled to exercise its rights or remedies hereunder, it may in its discretion elect to demand payment and/or performance. If Administrative Agent, on behalf of the Lenders, elects to demand performance, it shall at all times thereafter have the right to demand payment until all of the Guaranteed Obligations have been paid and performed in full. If Administrative Agent, on behalf of the Lenders, elects to demand payment, it shall at all times thereafter have the right to demand performance until all of the Guaranteed Obligations have been paid and performed in full.

4. Certain Agreements and Waivers by Guarantor.

(a) Guarantor hereby agrees that neither Lenders’ rights or remedies nor Guarantor’s obligations under the terms of this Guaranty shall be released, diminished, impaired, reduced or affected by any one or more of the following events, actions, facts, circumstances or rights, and the liability of Guarantor under this Guaranty shall be absolute and unconditional irrespective of:

(i) any limitation of liability or recourse in any other Loan Document or arising under any law;

(ii) any claim or defense that this Guaranty was made without consideration or is not supported by adequate consideration;

(iii) the taking or accepting of any other security or guaranty for, or right of recourse with respect to, any or all of the Guaranteed Obligations;

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(iv) any homestead exemption or any other exemption under applicable law;

(v) any release, surrender, abandonment, exchange, alteration, sale or other disposition, subordination, deterioration, waste, failure to protect or preserve, impairment, or loss of, or any failure to create or perfect any lien or security interest with respect to, or any other dealings with, any collateral or security at any time existing or purported, believed or expected to exist in connection with any or all of the Guaranteed Obligations, including any impairment of Guarantor’s recourse against any Person or collateral;

(vi) whether express or by operation of law, any partial release of the liability of Guarantor hereunder, or if one or more other guaranties are now or hereafter obtained by the Lenders covering all or any part of the Guaranteed Obligations, any complete or partial release of any one or more of such guarantors under any such other guaranty, or any complete or partial release of Borrower or any other party liable, directly or indirectly, for the payment or performance of any or all of the Guaranteed Obligations;

(vii) the death, insolvency, bankruptcy, disability, dissolution, liquidation, termination, receivership, reorganization, merger, consolidation, change of form, structure or ownership, sale of all assets, or lack of corporate, partnership or other power of Borrower or any other party at any time liable for the payment or performance of any or all of the Guaranteed Obligations;

(viii) either with or without notice to or consent of Guarantor: any renewal, extension, modification, supplement, subordination or rearrangement of the terms of any or all of the Guaranteed Obligations and/or any of the Loan Documents, including, without limitation, material alterations of the terms of payment (including changes in maturity date(s) and interest rate(s)) or performance (including changes in the Plans and other terms or aspects of construction of the Improvements) or any other terms thereof, or any waiver, termination, or release of, or consent to departure from, any of the Loan Documents or any other guaranty of any or all of the Guaranteed Obligations, or any adjustment, indulgence, forbearance, or compromise that may be granted from time to time by Administrative Agent, on behalf of the other Lenders, to Borrower, Guarantor, and/or any other Person at any time liable for the payment or performance of any or all of the Guaranteed Obligations;

(ix) any neglect, lack of diligence, delay, omission, failure, or refusal of Administrative Agent, on behalf of the Lenders, to take or prosecute (or in taking or prosecuting) any action for the collection or enforcement of any of the Guaranteed Obligations, or to foreclose or take or prosecute any action to foreclose (or in foreclosing or taking or prosecuting any action to foreclose) upon any security therefor, or to exercise (or in exercising) any other right or power with respect to any security therefor, or to take or prosecute (or in taking or prosecuting) any action in connection with any Loan Document, or any failure to sell or otherwise dispose of in a commercially reasonable manner any collateral securing any or all of the Guaranteed Obligations;

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(x) any failure of Administrative Agent, on behalf of the Lenders, to notify Guarantor of any creation, renewal, extension, rearrangement, modification, supplement, subordination, or assignment of the Guaranteed Obligations or any part thereof, or of any Loan Document, or of any release of or change in any security, or of any other action taken or refrained from being taken by Administrative Agent, on behalf of the Lenders, against Borrower or any security or other recourse, or of any new agreement between Administrative Agent, for the Lenders, and Borrower, it being understood that unless otherwise expressly provided for in this Guaranty, the Lenders shall not be required to give Guarantor any notice of any kind under any circumstances with respect to or in connection with the Guaranteed Obligations, any and all rights to notice Guarantor may have otherwise had being hereby waived by Guarantor, and the Guarantor shall be responsible for obtaining for itself information regarding the Borrower, including, but not limited to, any changes in the business or financial condition of the Borrower, and the Guarantor acknowledges and agrees that the Administrative Agent and the Lenders shall have no duty to notify the Guarantor of any information which the Administrative Agent and the Lenders may have concerning Borrower.

(xi) if for any reason any Lender is required to refund any payment by Borrower to any other party liable for the payment or performance of any or all of the Guaranteed Obligations or pay the amount thereof to someone else;

(xii) the making of advances by Administrative Agent, on behalf of the Lenders, to protect the interest of the Lenders in the Property, preserve the value of the Property, or for the purpose of performing any term or covenant contained in any of the Loan Documents;

(xiii) the existence of any claim, counterclaim, set-off or other right that Guarantor may at any time have against Borrower, Administrative Agent, any Lender, or any other Person, whether or not arising in connection with this Guaranty, the Note, the Loan Agreement, or any other Loan Document;

(xiv) the unenforceability of all or any part of the Guaranteed Obligations against Borrower, whether because the Guaranteed Obligations exceed the amount permitted by law or violate any usury law, or because the act of creating the Guaranteed Obligations, or any part thereof, is ultra xxxxx, or because the officers or Persons creating the Guaranteed Obligations acted in excess of their authority, or because of a lack of validity or enforceability of or defect or deficiency in any of the Loan Documents, or because Borrower has any valid defense, claim or offset with respect thereto, or because Borrower’s obligation ceases to exist by operation of law, or because of any other reason or circumstance, it being agreed that Guarantor shall remain liable hereon regardless of whether Borrower or any other Person be found not liable on the Guaranteed Obligations, or any part thereof, for any reason (and regardless of any joinder of Borrower or any other party in any action to obtain payment or performance of any or all of the Guaranteed Obligations); or

(xv) any order, ruling or plan of reorganization emanating from proceedings under Title 11 of the United States Code with respect to Borrower or any other Person,

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including any extension, reduction, composition, or other alteration of the Guaranteed Obligations, whether or not consented to by Administrative Agent and the Lenders.

(b) In the event any payment by Borrower or any other Person to any Lender is held to constitute a preference, fraudulent transfer or other voidable payment under any bankruptcy, insolvency or similar law, or if for any other reason any Lender is required to refund such payment or pay the amount thereof to any other party, such payment by Borrower or any other party to any Lender shall not constitute a release of Guarantor from any liability hereunder, and this Guaranty shall continue to be effective or shall be reinstated (notwithstanding any prior release, surrender or discharge by the Lenders of this Guaranty or of Guarantor), as the case may be, with respect to, and this Guaranty shall apply to, any and all amounts so refunded by any such Lender or paid by any such Lender to another Person (which amounts shall constitute part of the Guaranteed Obligations), and any interest paid by any such Lender and any attorneys’ fees, costs and expenses paid or incurred by Lender in connection with any such event. It is the intent of Guarantor and the Lenders that the obligations and liabilities of Guarantor hereunder are absolute and unconditional under any and all circumstances and that until the Guaranteed Obligations are fully and finally paid and performed, and not subject to refund or disgorgement, the obligations and liabilities of Guarantor hereunder shall not be discharged or released, in whole or in part, by any act or occurrence that might, but for the provisions of this Guaranty, be deemed a legal or equitable discharge or release of a guarantor. Administrative Agent, on behalf of the Lenders, shall be entitled to continue to hold this Guaranty in its possession for the longer of (i) the period after which any performance of obligations under the Loan Agreement shall accrue, or (ii) a period of one year from the date the Guaranteed Obligations are paid and performed in full and for so long thereafter as may be necessary to enforce any obligation of Guarantor hereunder and/or to exercise any right or remedy of the Lenders hereunder.

(c) If acceleration of the time for payment of any amount payable by Borrower under the Note, the Loan Agreement, or any other Loan Document that constitutes any of the Guaranteed Obligations is stayed or delayed by any law or tribunal, all such amounts shall nonetheless be payable by Guarantor on demand by Administrative Agent, on behalf of the Lenders.

5. Reserved.

6. Subordination. If, for any reason whatsoever, Borrower is now or hereafter becomes indebted to Guarantor:

(a) such indebtedness and all interest thereon and all liens, security interests and rights now or hereafter existing with respect to property of Borrower securing such indebtedness shall, at all times, be subordinate in all respects to the Guaranteed Obligations and to all liens, security interests and rights now or hereafter existing to secure the Guaranteed Obligations;

(b) Guarantor shall not be entitled to enforce or receive payment, directly or indirectly, of any such indebtedness of Borrower to Guarantor (other than trade payables or other customary expenses incurred in the ordinary course of business) until the Guaranteed Obligations have been fully and finally paid and performed;

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(c) Guarantor hereby assigns and grants to Administrative Agent, on behalf of the Lenders, a security interest in all such indebtedness and security therefor, if any, of Borrower to Guarantor now existing or hereafter arising, including any dividends and payments pursuant to debtor relief or insolvency proceedings referred to below. In the event of receivership, bankruptcy, reorganization, arrangement or other debtor relief or insolvency proceedings involving Borrower as debtor, Administrative Agent, on behalf of the Lenders, shall have the right to prove its claim in any such proceeding so as to establish its rights hereunder and shall have the right to receive directly from the receiver, trustee or other custodian (whether or not a Default shall have occurred or be continuing under any of the Loan Documents), dividends and payments that are payable upon any obligation of Borrower to Guarantor now existing or hereafter arising, and to have all benefits of any security therefor, until the Guaranteed Obligations have been fully and finally paid and performed. If, notwithstanding the foregoing provisions, Guarantor should receive any payment, claim or distribution that is prohibited as provided above in this Section 6, Guarantor shall pay the same to Administrative Agent, on behalf of the Lenders, immediately, Guarantor hereby agreeing that it shall receive the payment, claim or distribution in trust for Administrative Agent, on behalf of the Lenders, and shall have absolutely no dominion over the same except to pay it immediately to Administrative Agent; and

(d) Guarantor shall promptly upon request of Administrative Agent from time to time execute such documents and perform such acts as Administrative Agent may require to evidence and perfect its interest and to permit or facilitate exercise of its rights under this Section 6, including, but not limited to, execution and delivery of financing statements, proofs of claim, further assignments and security agreements, and delivery to Administrative Agent of any promissory notes or other instruments evidencing indebtedness of Borrower to Guarantor. All promissory notes, accounts receivable ledgers or other evidences, now or hereafter held by Guarantor, of obligations of Borrower to Guarantor shall contain a specific written notice thereon that the indebtedness evidenced thereby is subordinated under and is subject to the terms of this Guaranty.

7. Other Liability of Guarantor or Borrower. If Guarantor is or becomes liable, by endorsement or otherwise, for any indebtedness owing by Borrower to Administrative Agent and the Lenders other than under this Guaranty, such liability shall not be in any manner impaired or affected hereby, and the rights of Administrative Agent and the Lenders hereunder shall be cumulative of any and all other rights that Administrative Agent and the Lenders may have against Guarantor. If Borrower is or becomes indebted to Lenders for any indebtedness other than or in excess of the Indebtedness for which Guarantor is liable under this Guaranty, any payment received or recovery realized upon such other indebtedness of Borrower to Lenders may, except to the extent paid by Guarantor on the Indebtedness or specifically required by law or agreement of Administrative Agent to be applied to the Indebtedness, in Administrative Agent’s sole discretion, be applied upon indebtedness of Borrower to Lenders other than the Indebtedness. This Guaranty is independent of (and shall not be limited by) any other guaranty now existing or hereafter given. Further, Guarantor’s liability under this Guaranty is in addition to any and all other liability Guarantor may have in any other capacity, including without limitation, its capacity as a general partner.

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8. Lenders’ Assigns. This Guaranty is for the benefit of Administrative Agent and the Lenders and their successors and assigns, and in the event of an assignment of the Guaranteed Obligations, or any part thereof, the rights and benefits hereunder, to the extent applicable to the Guaranteed Obligations so assigned, may be transferred with such Guaranteed Obligations. Guarantor waives notice of any transfer or assignment of the Guaranteed Obligations, or any part thereof, and agrees that failure to give notice of any such transfer or assignment will not affect the liabilities of Guarantor hereunder.

9. Binding Effect. This Guaranty is binding not only on Guarantor, but also on Guarantor’s successors and assigns. Upon the death of Guarantor, if Guarantor is a natural person, this Guaranty shall continue against Guarantor’s estate as to all of the Guaranteed Obligations, including that portion incurred or arising after the death of Guarantor and shall be provable in full against Guarantor’s estate, whether or not the Guaranteed Obligations are then due and payable. If this Guaranty is signed by more than one Person, then all of the obligations of Guarantor arising hereunder shall be jointly and severally binding on each of the undersigned, and their respective heirs, personal representatives, successors and assigns, and the term “Guarantor” shall mean all of such Persons and each of them individually.

10. Governing Law; Forum; Consent to Jurisdiction. The validity, enforcement, and interpretation of this Guaranty, shall for all purposes be governed by and construed in accordance with the laws of the State of Texas and applicable United States federal law, and is intended to be performed in accordance with, and only to the extent permitted by, such laws. All obligations of Guarantor hereunder are payable and performable at the place or places where the Guaranteed Obligations are payable and performable. Guarantor hereby irrevocably submits generally and unconditionally for Guarantor and in respect of Guarantor’s property to the nonexclusive jurisdiction of any state court, or any United States federal court, sitting in the state specified in the first sentence of this Section and to the jurisdiction of any state or United States federal court sitting in the state in which any of the Land is located, over any suit, action or proceeding arising out of or relating to this Guaranty or the Guaranteed Obligations. Guarantor hereby irrevocably waives, to the fullest extent permitted by law, any objection that Guarantor may now or hereafter have to the laying of venue in any such court and any claim that any such court is an inconvenient forum. Final judgment in any such suit, action or proceeding brought in any such court shall be conclusive and binding upon Guarantor and may be enforced in any court in which Guarantor is subject to jurisdiction. Guarantor hereby agrees and consents that, in addition to any methods of service of process provided for under applicable law, all service of process in any such suit, action or proceeding in any state court, or any United States federal court, sitting in the state specified in the first sentence of this Section may be made by certified or registered mail, return receipt requested, directed to Guarantor at the address set forth at the end of this Guaranty, or at a subsequent address of which Administrative Agent receives actual notice from Guarantor in accordance with the notice provisions hereof, and service so made shall be complete five (5) days after the same shall have been so mailed. Nothing herein shall affect the right of Administrative Agent to serve process in any manner permitted by law or limit the right of Administrative Agent, on behalf of the Lenders, to bring proceedings against Guarantor in any other court or jurisdiction. Guarantor hereby releases, to the extent permitted by applicable law, all errors and all rights of exemption, appeal, stay of execution, inquisition, and other rights to which the Guarantor may otherwise be entitled under the laws of the United States

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of America or any State or possession of the United States of America now in force or which may hereinafter be enacted. The authority and power to appear for and enter judgment against the Guarantor shall not be exhausted by one or more exercises thereof or by any imperfect exercise thereof and shall not be extinguished by any judgment entered pursuant thereto. Such authority may be exercised on one or more occasions or from time to time in the same or different jurisdiction as often as the Administrative Agent shall deem necessary and desirable.

11. Invalidity of Certain Provisions. If any provision of this Guaranty or the application thereof to any Person or circumstance shall, for any reason and to any extent, be declared to be invalid or unenforceable, neither the remaining provisions of this Guaranty nor the application of such provision to any other Person or circumstance shall be affected thereby, and the remaining provisions of this Guaranty, or the applicability of such provision to other Persons or circumstances, as applicable, shall remain in effect and be enforceable to the maximum extent permitted by applicable law.

12. Attorneys’ Fees and Costs of Collection. Guarantor shall pay on demand all attorneys’ fees and all other costs and expenses incurred by Administrative Agent, on behalf of the Lenders, in the enforcement of or preservation of the Lenders’ rights under this Guaranty including, without limitation, all attorneys’ fees and expenses, investigation costs, and all court costs, whether or not suit is filed hereon, or whether at maturity or by acceleration, or whether before or after maturity, or whether in connection with bankruptcy, insolvency or appeal, or whether in connection with the collection and enforcement of this Guaranty against any other Guarantor, if there be more than one. Guarantor agrees to pay interest on any expenses or other sums due to Administrative Agent under this Section 12 that are not paid when due, at a rate per annum equal to the Past Due Rate. Guarantor’s obligations and liabilities under this Section 12 shall survive any payment or discharge in full of the Guaranteed Obligations.

13. Payments. All sums payable under this Guaranty shall be paid in lawful money of the United States of America that at the time of payment is legal tender for the payment of public and private debts.

14. Controlling Agreement. It is not the intention of Administrative Agent, the Lenders or Guarantor to obligate Guarantor to pay interest in excess of that lawfully permitted to be paid by Guarantor under applicable law. Should it be determined that any portion of the Guaranteed Obligations or any other amount payable by Guarantor under this Guaranty constitutes interest in excess of the maximum amount of interest that Guarantor, in Guarantor’s capacity as guarantor, may lawfully be required to pay under applicable law, the obligation of Guarantor to pay such interest shall automatically be limited to the payment thereof in the maximum amount so permitted under applicable law. The provisions of this Section 14 shall override and control all other provisions of this Guaranty and of any other agreement between Guarantor, Administrative Agent, and the Lenders.

15. Representations, Warranties, and Covenants of Guarantor. Guarantor hereby represents, warrants, and covenants to Administrative Agent and the Lenders that (a) Guarantor owns, directly or indirectly, an interest in Borrower and will derive a material and substantial benefit, directly or indirectly, from the making of the Loan to Borrower and from the making of this Guaranty by Guarantor; (b) this Guaranty is duly authorized and valid, and is binding upon

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and enforceable against Guarantor; (c) Guarantor is not, and the execution, delivery and performance by Guarantor of this Guaranty will not cause Guarantor to be, in violation of any law or in default (or at risk of acceleration of indebtedness) under any agreement or restriction by which Guarantor is bound or affected; (d) Guarantor is duly organized, validly existing, and in good standing under the laws of the state of its organization and has full power and authority to enter into and perform this Guaranty; (e) Guarantor will indemnify Administrative Agent and the Lenders from any loss, cost or expense as a result of any representation or warranty of the Guarantor being false, incorrect, incomplete or misleading in any material respect; (f) there is no litigation pending or, to the knowledge of Guarantor, threatened before or by any tribunal against or affecting Guarantor; (g) all financial statements and information regarding Guarantor heretofore furnished to Administrative Agent by Guarantor do, and all financial statements and such information hereafter furnished to Administrative Agent by Guarantor will, fairly and accurately present the condition (financial or otherwise) of Guarantor as of their dates and the results of Guarantor’s operations for the periods therein specified, and, since the date of the most recent financial statements of Guarantor heretofore furnished to Administrative Agent, no material adverse change has occurred in the financial condition of Guarantor, nor, except as heretofore disclosed in writing to Administrative Agent, has Guarantor incurred any material liability, direct or indirect, fixed or contingent except liabilities incurred in the ordinary course of business; (h) after giving effect to this Guaranty, Guarantor is solvent, is not engaged or about to engage in business or a transaction for which the property of Guarantor is an unreasonably small capital, and does not intend to incur or believe that it will incur debts that will be beyond its ability to pay as such debts mature; (i) neither Administrative Agent nor the Lenders have any duty at any time to investigate or inform Guarantor of the financial or business condition or affairs of Borrower or any change therein, and Guarantor will keep fully apprised of Borrower’s financial and business condition; (j) Guarantor acknowledges and agrees that Guarantor may be required to pay and perform the Guaranteed Obligations in full without assistance or support from Borrower or any other Person; and (k) Guarantor has read and fully understands the provisions contained in the Note, the Loan Agreement, the Deed of Trust, and the other Loan Documents. Guarantor’s representations, warranties and covenants are a material inducement to Administrative Agent and the Lenders to enter into the other Loan Documents and shall survive the execution hereof and any bankruptcy, foreclosure, transfer of security or other event affecting Borrower, Guarantor, any other party, or any security for all or any part of the Guaranteed Obligations.

16. Notices. All notices, requests, consents, demands and other communications required or which any party desires to give hereunder or under any other Loan Document shall be in writing and, unless otherwise specifically provided in such other Loan Document, shall be deemed sufficiently given or furnished if delivered by personal delivery, by courier, or by registered or certified United States mail, postage prepaid, addressed to the party to whom directed at the addresses specified in this Guaranty (unless changed by similar notice in writing given by the particular party whose address is to be changed) or by facsimile with a confirmatory duplicate copy sent by first class United States mail), addressed to the party to whom directed or by electronic mail address, at the addresses set forth at the end of this Agreement or to Administrative Agent or the Lenders at the addresses specified for notices in the Loan Agreement (unless changed by similar notice in writing given by the particular party whose address is to be changed). Any such notice or communication shall be deemed to have been

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given either at the time of personal delivery or, in the case of courier or mail, as of the date of first attempted delivery at the address and in the manner provided herein, or, in the case of facsimile, upon receipt; provided that, service of a notice required by any applicable statute shall be considered complete when the requirements of that statute are met. Notwithstanding the foregoing, no notice of change of address shall be effective except upon actual receipt. This Section shall not be construed in any way to affect or impair any waiver of notice or demand provided in this Guaranty or in any Loan Document or to require giving of notice or demand to or upon any Person in any situation or for any reason.

17. Cumulative Rights. The exercise by Administrative Agent, on behalf of the Lenders, of any right or remedy hereunder or under any other Loan Document, or at law or in equity, shall not preclude the concurrent or subsequent exercise of any other right or remedy. Administrative Agent, on behalf of the Lenders, shall have all rights, remedies and recourses afforded to the Lenders by reason of this Guaranty or any other Loan Document or by law or equity or otherwise, and the same (a) shall be cumulative and concurrent, (b) may be pursued separately, successively or concurrently against Guarantor or others obligated for the Guaranteed Obligations, or any part thereof, or against any one or more of them, or against any security or otherwise, at the sole and absolute discretion of Administrative Agent, on behalf of the Lenders, (c) may be exercised as often as occasion therefor shall arise, it being agreed by Guarantor that the exercise of, discontinuance of the exercise of or failure to exercise any of such rights, remedies, or recourses shall in no event be construed as a waiver or release thereof or of any other right, remedy, or recourse, and (d) are intended to be, and shall be, nonexclusive. No waiver of any default on the part of Guarantor or of any breach of any of the provisions of this Guaranty or of any other document shall be considered a waiver of any other or subsequent default or breach, and no delay or omission in exercising or enforcing the rights and powers granted herein or in any other document shall be construed as a waiver of such rights and powers, and no exercise or enforcement of any rights or powers hereunder or under any other document shall be held to exhaust such rights and powers, and every such right and power may be exercised from time to time. The granting of any consent, approval or waiver by Administrative Agent, on behalf of the Lenders, shall be limited to the specific instance and purpose therefor and shall not constitute consent or approval in any other instance or for any other purpose. No notice to or demand on Guarantor in any case shall of itself entitle Guarantor to any other or further notice or demand in similar or other circumstances. No provision of this Guaranty or any right, remedy or recourse of Administrative Agent and the Lenders with respect hereto, or any default or breach, can be waived, nor can this Guaranty or Guarantor be released or discharged in any way or to any extent, except specifically in each case by a writing intended for that purpose (and which refers specifically to this Guaranty) executed, and delivered to Guarantor, by Administrative Agent, on behalf of the Lenders.

18. Term of Guaranty. This Guaranty shall continue in effect until all the Guaranteed Obligations are fully and finally paid, performed and discharged, except that, and notwithstanding any return of this Guaranty to Guarantor, this Guaranty shall continue in effect (i) with respect to any of the Guaranteed Obligations that survive the full and final payment of the indebtedness evidenced by the Note, (ii) with respect to all obligations and liabilities of Guarantor under Section 12 and (iii) as provided in Section 4(b).

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19. Financial Statements.

(a) As used in this Section, “Financial Statements” means a balance sheet, income statement, statements of cash flow and amount and sources of contingent liabilities, a reconciliation of changes in equity and liquidity verification, and, unless Administrative Agent otherwise consents, consolidated statements if the reporting party is a holding company or a parent of a subsidiary entity. Each party for whom Financial Statements are required is a “reporting party” and a specified period to which the required Financial Statements relate is a “reporting period”.

(b) Guarantor shall provide or cause to be provided to Administrative Agent the following:

(i) within one hundred twenty (120) days after the close of each fiscal year of Guarantor annual, audited Financial Statements of Guarantor;

(ii) within seventy-five (75) days after the close of each quarter of each fiscal year of Guarantor quarterly, unaudited Financial Statements of Guarantor;

(iii) within thirty (30) days after the end of each calendar quarter (i.e., each March 31, June 30, September 30 and December 31) of each calendar year during the term of the Loan, a Compliance Certificate for Guarantor, executed by any executive level officer of Guarantor, in the form of that attached hereto as Exhibit A (“Compliance Certificate”) evidencing Guarantor’s compliance (or non-compliance, as applicable) with the covenants in this Section 19; and

(iv) from time to time promptly after Administrative Agent’s request, such additional information, reports and statements regarding the business operations and financial condition of each reporting party as Administrative Agent may reasonably request.

All Financial Statements shall be in form and detail satisfactory to Administrative Agent in its good faith business judgment and shall contain or be attached to the signed and dated written certification of the reporting party in form satisfactory to Administrative Agent to certify that the Financial Statements have been prepared in accordance with GAAP and are furnished to Administrative Agent in connection with the extension of credit by Administrative Agent and the Lenders, and constitute a true and correct statement of the reporting party’s financial position. Administrative Agent agrees that the Financial Statements of Guarantor delivered to Administrative Agent in satisfaction of the conditions to closing and funding of the Loan are satisfactory as to form, detail and accounting principles used therein and Financial Statements to be provided in satisfaction of the requirements of this Guaranty shall be satisfactory to Administrative Agent as to form, detail and accounting principles if consistent with such Financial Statements. All certifications and signatures on behalf of corporations, partnerships or other entities shall be by an authorized representative of the entity satisfactory to Administrative Agent in its good faith business judgment. Except as provided in Section 19(b) above, all Financial Statements shall be audited or certified, as required by Administrative Agent, without any qualification or exception not acceptable to Administrative Agent in its good faith business

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judgment, by Xxxxxx, Xxxxx & Company, L.L.P. or another independent certified public accountants acceptable to Administrative Agent, and shall contain all reports and disclosures required by generally accepted accounting principles for a fair presentation. All assets shown on the Financial Statements provided by Guarantor, unless clearly designated to the contrary shall, be conclusively deemed to be free and clear of any exemption or any claim of exemption of Guarantor at the date of the Financial Statements and at all times thereafter. Acceptance of any Financial Statement by Administrative Agent, whether or not in the form prescribed herein, shall be relied upon by Administrative Agent and the Lenders in the administration, enforcement, and extension of the Guaranteed Obligations.

(i) Guarantor will maintain, as of each Test Date during the term of the Loan, Liquid Assets of at least $5,000,000.00;

(ii) Guarantor will maintain, as of each Test Date during the term of the Loan, a Tangible Net Worth of not less than $242,000,000.00;

(iii) As of each Test Date during the term of the Loan, the ratio (expressed as a percentage) of (A) all Liabilities of Guarantor for the calendar quarter ending on such Test Date, to (B) all assets of Guarantor determined in accordance with GAAP for the calendar quarter ending on the same Test Date, shall not be greater than seventy-five percent (75%).

(d) For purposes of this Section 19, the following capitalized terms have the meanings set forth below:

“GAAP” means generally accepted accounting principles in the United States set forth in the opinions and pronouncements of the Accounting Principles Board and the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or such other principles as may be approved by a significant segment of the accounting profession in the United States, that are applicable to the circumstances as of the date of determination, consistently applied.

“Liabilities” means, as to Guarantor, without duplication, all indebtedness, liabilities and obligations of Guarantor, whether matured or unmatured, liquidated or unliquidated, primary or secondary, direct or indirect, absolute, fixed or contingent, and whether or not required to be considered pursuant to GAAP.

“Liquid Assets” means the sum of the total assets of Guarantor that are cash, cash equivalents, accounts and other highly liquid investments that are not pledged, hypothecated, subject to rights of offset or otherwise restricted.

“Tangible Net Worth” shall mean the excess of total assets over total liabilities (contingent or otherwise, including without limitation, declared and unpaid distributions to partners of Guarantor) determined in accordance with GAAP; excluding, however, all assets that

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are classified under GAAP as intangible, including, without limitation, goodwill, licenses, patents, trademarks, trade names, copyrights and franchises.

“Test Date” shall mean, the last date of each calendar quarter (i.e., every December 31st, March 31st, June 30th and September 30th) during the term of the Loan.

20. Disclosure of Information. Lenders may sell or offer to sell the Loan or interests in the Loan to one or more assignees or participants and may disclose to any such assignee or participant or prospective assignee or participant, to Lenders’ affiliates, to any regulatory body having jurisdiction over Lenders and to any other parties as necessary or appropriate in any Lender’s reasonable judgment, any information Lenders now have or hereafter obtain pertaining to the Guaranteed Obligations, this Guaranty, or Guarantor, including, without limitation, information regarding any security for the Guaranteed Obligations or for this Guaranty, credit or other information on Guarantor, Borrower, and/or any other party liable, directly or indirectly, for any part of the Guaranteed Obligations. Any disclosures by Lenders or Administrative Agent pursuant to this Section 20 shall be made in compliance with the provisions of Section 6.6 of the Loan Agreement.

21. Right of Set-Off. Upon the occurrence and during the continuance of any Default, however defined, in the payment or performance when due of any of the Guaranteed Obligations, each Lender is hereby authorized at any time and from time to time with prior notice to and consent of Administrative Agent, to the fullest extent permitted by applicable law, without notice to any Person (any such notice being expressly waived by Guarantor to the fullest extent permitted by applicable law), to set off and apply any and all deposits, funds, or assets at any time held and other indebtedness at any time owing by such Lender to or for the credit or the account of Guarantor against any and all of the obligations of Guarantor now or hereafter existing under this Guaranty that are then due and payable. Such Lender will promptly notify Guarantor after any such set-off and application made by such Lender, provided that the failure to give such notice shall not affect the validity of such set-off and application. The rights of Lenders under this Section 21 are in addition to the other rights and remedies (including other rights of set-off) that Administrative Agent may have, on behalf of all Lenders, and every right of setoff and lien shall continue in full force and effect until such right of setoff or lien is specifically waived or released by an instrument in writing executed by Administrative Agent.

22. Subrogation. Notwithstanding anything to the contrary contained herein, Guarantor shall not have any right of subrogation in or under any of the Loan Documents or to participate in any way therein, or in any right, title or interest in and to any security or right of recourse for the Indebtedness or any right to reimbursement, exoneration, contribution, indemnification or any similar rights against any party liable for the Indebtedness, until the Indebtedness has been fully paid. This waiver is given to induce Lenders to make the Loan to Borrower.

23. Further Assurances. Guarantor at Guarantor’s expense will promptly execute and deliver to Administrative Agent upon Administrative Agent’s request all such other and further documents, agreements, and instruments in compliance with or accomplishment of the agreements of Guarantor under this Guaranty.

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24. No Fiduciary Relationship. The relationship between Administrative Agent and the Lenders, on the one hand, and Guarantor, on the other hand, is solely that of lender and guarantor. Administrative Agent and the Lenders have no fiduciary or other special relationship with or duty to Guarantor and none is created hereby or may be inferred from any course of dealing or act or omission of Administrative Agent or Lender.

25. Interpretation. If this Guaranty is signed by more than one Person as “Guarantor”, then the term “Guarantor” as used in this Guaranty shall refer to all such Persons, jointly and severally, and all promises, agreements, covenants, waivers, consents, representations, warranties and other provisions in this Guaranty are made by and shall be binding upon each and every such Person, jointly and severally and Administrative Agent, on behalf of all Lenders, may pursue any Guarantor hereunder without being required (i) to pursue any other Guarantor hereunder or (ii) pursue rights and remedies under the Deed of Trust and/or applicable law with respect to the Property or any other Loan Documents. The term “Administrative Agent” shall be deemed to include any subsequent administrative agent appointed under the Loan Agreement. Whenever the context of any provisions hereof shall require it, words in the singular shall include the plural, words in the plural shall include the singular, and pronouns of any gender shall include the other gender. Captions and headings in the Loan Documents are for convenience only and shall not affect the construction of the Loan Documents. All references in this Guaranty to Schedules, Articles, Sections, Subsections, paragraphs and subparagraphs refer to the respective subdivisions of this Guaranty, unless such reference specifically identifies another document. The terms “herein”, “hereof”, “hereto”, “hereunder” and similar terms refer to this Guaranty and not to any particular Section or subsection of this Guaranty. The terms “include” and “including” shall be interpreted as if followed by the words “without limitation”. All references in this Guaranty to sums denominated in dollars or with the symbol “$” refer to the lawful currency of the United States of America, unless such reference specifically identifies another currency. For purposes of this Guaranty, “Person” or “Persons” shall include firms, associations, partnerships (including limited partnerships), joint ventures, trusts, corporations, limited liability companies, and other legal entities, including governmental bodies, agencies, or instrumentalities, as well as natural persons.

26. Time of Essence. Time shall be of the essence in this Guaranty with respect to all of Guarantor’s obligations hereunder.

27. Counterparts. This Guaranty may be executed in multiple counterparts, each of which, for all purposes, shall be deemed an original, and all of which taken together shall constitute but one and the same agreement.

28. Entire Agreement. This Guaranty embodies the entire agreement between Administrative Agent, the Lenders and Guarantor with respect to the guaranty by Guarantor of the Guaranteed Obligations. This Guaranty supersedes all prior agreements and understandings, if any, with respect to the guaranty by Guarantor of the Guaranteed Obligations. No condition or conditions precedent to the effectiveness of this Guaranty exist. This Guaranty shall be effective upon execution by Guarantor and delivery to Administrative Agent. This Guaranty may not be modified, amended or superseded except in a writing signed by Administrative Agent, on behalf of the Lenders, and Guarantor referencing this Guaranty by its date and specifically identifying the portions hereof that are to be modified, amended or superseded.

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29. Dispute Resolution.

(a) Arbitration. Except to the extent expressly provided below, any controversy, claim or dispute between or among the parties hereto, including any such controversy, claim or dispute arising out of or relating to (i) this Guaranty, (ii) any other Loan Document, (iii) any related agreements or instruments, or (iv) the transaction contemplated herein or therein (including any claim based on or arising from an alleged personal injury or business tort) (collectively, a “Dispute”), shall, upon the request of either party, be determined by binding arbitration in accordance with the Federal Arbitration Act, Xxxxx 0, Xxxxxx Xxxxxx Code (or if not applicable, the applicable state law), the then current rules for arbitration of financial services disputes of the American Arbitration Association, or any successor thereof (“AAA”), and the “Special Rules” set forth below. In the event of any inconsistency, the Special Rules shall control. The filing of a court action is not intended to constitute a waiver of the right of Guarantor or Lenders, including the suing party, thereafter to require submittal of the Dispute to arbitration. Any party to this Guaranty may bring an action, including a summary or expedited proceeding, to compel arbitration of any Dispute in any court having jurisdiction over such action. For the purposes of this Dispute Resolution Section only, the terms “party” and “parties” shall include any parent corporation, subsidiary or affiliate of Lenders involved in the servicing, management or administration of any obligation described in or evidenced by this Guaranty, together with the officers, employees, successors and assigns of each of the foregoing.

(b) Special Rules.

(i) The arbitration shall be conducted in the City of Dallas, Texas.

(ii) The arbitration shall be administered by AAA, who will appoint an arbitrator; if AAA is unwilling or unable to administer or legally precluded from administering the arbitration or if AAA is unwilling or unable to enforce or legally precluded from enforcing any and all provisions of this Dispute Resolution Section, then any party to this Guaranty may substitute, without the necessity of the agreement of consent of the other party or parties, another arbitration organization that has similar procedures to AAA but that will observe and enforce any and all provisions of this Dispute Resolution Section. All Disputes shall be determined by one arbitrator; however, if the amount in controversy in a Dispute exceeds Five Million Dollars ($5,000,000), upon the request of any party, the Dispute shall be decided by three arbitrators (for purposes of this Guaranty, referred to collectively as the “arbitrator”).

(iii) All arbitration hearings will be commenced within ninety (90) days of the demand for arbitration and completed within ninety (90) days from the date of commencement; provided, however, that upon a showing of good cause, the arbitrator shall be permitted to extend the commencement of such hearing for up to an additional sixty (60) days.

(iv) The judgment and the award, if any, of the arbitrator shall be issued within thirty (30) days of the close of the hearing. The arbitrator shall provide a concise written statement setting forth the reasons for the judgment and for the award, if any. The arbitration award, if any, may be submitted to any court having jurisdiction to be

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confirmed and enforced, and such confirmation and enforcement shall not be subject to arbitration.

(v) The arbitrator will give effect to statutes of limitations and any waivers thereof in determining the disposition of any Dispute and may dismiss one or more claims in the arbitration on the basis that such claim or claims is or are barred. For purposes of the application of the statute of limitations, the service on AAA under applicable AAA rules of a notice of Dispute is the equivalent of the filing of a lawsuit.

(vi) Any dispute concerning this Dispute Resolution Section, including any such dispute as to the validity or enforceability of this provision, or whether a Dispute is arbitrable, shall be determined by the arbitrator; provided, however, that the arbitrator shall not be permitted to vary the express provisions of the Special Rules or the Reservation of Rights in subsection (c) below.

(vii) The arbitrator shall have the power to award legal fees and costs pursuant to the terms of this Guaranty.

(viii) The arbitration will take place on an individual basis without reference to, resort to, or consideration of any form of class or class action.

(c) Reservations of Rights. Nothing in this Guaranty shall be deemed to (i) limit the applicability of any otherwise applicable statutes of limitation and any waivers contained in this Guaranty, or (ii) apply to or limit the right of Administrative Agent, on behalf of the Lenders, or any Lender, (A) to exercise self help remedies such as (but not limited to) setoff, or (B) to foreclose judicially or nonjudicially against any real or personal property collateral, or to exercise judicial or nonjudicial power of sale rights, (C) to obtain from a court provisional or ancillary remedies such as (but not limited to) injunctive relief, writ of possession, prejudgment attachment, or the appointment of a receiver , or (D) to pursue rights against a party to this Guaranty in a third-party proceeding in any action brought against Administrative Agent or any Lender in a state, federal or international court, tribunal or hearing body (including actions in specialty courts, such as bankruptcy and patent courts). Administrative Agent, on behalf of the Lenders, may exercise the rights set forth in clauses (A) through (D), inclusive, and Lenders may exercise the right of setoff, before, during or after the pendency of any arbitration proceeding brought pursuant to this Guaranty. Neither the exercise of self help remedies nor the institution or maintenance of an action for foreclosure or provisional or ancillary remedies shall constitute a waiver of the right of any party, including the claimant in any such action, to arbitrate the merits of the Dispute occasioning resort to such remedies. No provision in the Loan Documents regarding submission to jurisdiction and/or venue in any court is intended or shall be construed to be in derogation of the provisions in any Loan Document for arbitration of any Dispute.

(d) Conflicting Provisions for Dispute Resolution. If there is any conflict between the terms, conditions and provisions of this Section and those of any other provision or agreement for arbitration or dispute resolution, the terms, conditions and provisions of this Section shall prevail as to any Dispute arising out of or relating to (i) this Guaranty, (ii) any other Loan Document, (iii) any related agreements or instruments, or (iv) the transaction contemplated

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herein or therein (including any claim based on or arising from an alleged personal injury or business tort). In any other situation, if the resolution of a given Dispute is specifically governed by another provision or agreement for arbitration or dispute resolution, the other provision or agreement shall prevail with respect to said Dispute.

(e) Jury Trial Waiver in Arbitration. By agreeing to this Section, the parties irrevocably and voluntarily waive any right they may have to a trial by jury in respect of any Dispute.

30. WAIVER OF JURY TRIAL. WITHOUT INTENDING IN ANY WAY TO LIMIT THE PARTIES’ AGREEMENT TO ARBITRATE ANY “DISPUTE” (FOR PURPOSES OF THIS SECTION, AS DEFINED ABOVE) AS SET FORTH IN THIS GUARANTY, TO THE EXTENT ANY “DISPUTE” IS NOT SUBMITTED TO ARBITRATION OR IS DEEMED BY THE ARBITRATOR OR BY ANY COURT WITH JURISDICTION TO BE NOT ARBITRABLE OR NOT REQUIRED TO BE ARBITRATED, GUARANTOR AND ADMINISTRATIVE AGENT, ON BEHALF OF ALL LENDERS, WAIVE TRIAL BY JURY IN RESPECT OF ANY SUCH “DISPUTE” AND ANY ACTION ON SUCH “DISPUTE.” THIS WAIVER IS KNOWINGLY, WILLINGLY AND VOLUNTARILY MADE BY GUARANTOR AND ADMINISTRATIVE AGENT, ON BEHALF OF ALL LENDERS, AND GUARANTOR AND ADMINISTRATIVE AGENT HEREBY REPRESENT THAT NO REPRESENTATIONS OF FACT OR OPINION HAVE BEEN MADE BY ANY PERSON OR ENTITY ACTING FOR OR ON BEHALF OF ADMINISTRATIVE AGENT OR LENDERS TO INDUCE THIS WAIVER OF TRIAL BY JURY OR TO IN ANY WAY MODIFY OR NULLIFY ITS EFFECT. THIS PROVISION IS A MATERIAL INDUCEMENT FOR THE PARTIES ENTERING INTO THE LOAN DOCUMENTS. GUARANTOR AND ADMINISTRATIVE AGENT ARE EACH HEREBY AUTHORIZED TO FILE A COPY OF THIS SECTION IN ANY PROCEEDING AS CONCLUSIVE EVIDENCE OF THIS WAIVER OF JURY TRIAL. GUARANTOR FURTHER REPRESENTS AND WARRANTS THAT IT HAS BEEN REPRESENTED IN THE SIGNING OF THIS GUARANTY AND IN THE MAKING OF THIS WAIVER BY INDEPENDENT LEGAL COUNSEL, OR HAS HAD THE OPPORTUNITY TO BE REPRESENTED BY INDEPENDENT LEGAL COUNSEL SELECTED OF ITS OWN FREE WILL, AND THAT IT HAS HAD THE OPPORTUNITY TO DISCUSS THIS WAIVER WITH COUNSEL.

31. Credit Verification. Each legal entity and individual obligated on this Guaranty, whether as a Guarantor, a general partner of a Guarantor or in any other capacity, hereby authorizes Administrative Agent and each Lender to check any credit references, verify his/her employment and obtain credit reports from credit reporting agencies of Administrative Agent’s and such Lender’s choice in connection with any monitoring, collection or future transaction concerning the Loan, including any modification, extension or renewal of the Loan. Also in connection with any such monitoring, collection or future transaction, Administrative Agent and each Lender is hereby authorized to check credit references, verify employment and obtain a third party credit report for the spouse of any married person obligated on this Guaranty, if such person lives in a community property state.

GUARANTY AGREEMENT - Page 21

THE LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES.

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GUARANTY AGREEMENT - Page 22

IN WITNESS WHEREOF, Guarantor duly executed this Guaranty under seal as of the date first written above.

Address of Guarantor:	GUARANTOR:

Behringer Harvard Opportunity	BEHRINGER HARVARD OPPORTUNITY
REIT I, Inc.	REIT I, INC., a Maryland corporation
00000 Xxxxxx Xxxxxxx, Xxxxx 000
Xxxxxx, XX 00000
Attention: Xxxxxx X. Xxxxxxx, III	By:	/s/ Xxxxxx X. Xxxxxxx, III
	Name:		Xxxxxx X. Xxxxxxx, III
	Title:		Executive Vice President - Corporate
			Development & Legal and Secretary

GUARANTY AGREEMENT - Signature Page

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