UNCONDITIONAL GUARANTY OF PAYMENT AND PERFORMANCE

EXHIBIT 10.2

UNCONDITIONAL GUARANTY OF PAYMENT AND PERFORMANCE

FOR AND IN CONSIDERATION OF the sum of Ten and No/100 Dollars ($10.00) and other good and valuable consideration paid or delivered to the undersigned GLADSTONE COMMERCIAL CORPORATION, a Maryland corporation (“Parent”), AL13 BROOKWOOD LLC, a Delaware limited liability company (“Brookwood”), CMS06-3 LLC, a Delaware limited liability company (“CMS”), EI07 TEWKSBURY MA LLC, a Delaware limited liability company (“Tewskbury”), NJT06 STERLING HEIGHTS MI LLC, a Delaware limited liability company (“Sterling Heights”), RB08 CONCORD OH LLC, a Delaware limited liability company (“Concord”), DBPI07 BOLINGBROOK IL LLC, a Delaware limited liability company (“Bolingbrook”), RCOG07 GEORGIA LLC, a Delaware limited liability company (“Georgia”) and APML07 HIALEAH FL LLC, a Delaware limited liability company (“Hialea”; Brookwood, CMS, Tewksbury, Sterling Heights, Concord, Bolingbrook, Georgia and Hialeah, and each other Subsidiary Guarantor which may hereafter become a party hereto are sometimes hereinafter referred to individually as “Subsidiary Guarantor” and collectively as “Subsidiary Guarantors”; Parent and the Subsidiary Guarantors are sometimes hereinafter referred to individually as “Guarantor” and collectively as “Guarantors”), the receipt and sufficiency whereof are hereby acknowledged by Guarantors, and for the purpose of seeking to induce KEYBANK NATIONAL ASSOCIATION, a national banking association (hereinafter referred to as “Lender”, which term shall also include each other Lender which may now be or hereafter become a party to the “Credit Agreement” (as hereinafter defined), any Lender acting as the Issuing Lender under the Credit Agreement, and shall also include any such individual Lender acting as agent for all of the Lenders), to extend credit or otherwise provide financial accommodations to GLADSTONE COMMERCIAL LIMITED PARTNERSHIP, a Delaware limited partnership (hereinafter referred to as “Borrower”), which extension of credit and provision of financial accommodations will be to the direct interest, advantage and benefit of Guarantors, Guarantors do hereby, jointly and severally, absolutely, unconditionally and irrevocably guarantee to Lender the complete payment and performance of the following liabilities, obligations and indebtedness of Borrower to Lender (hereinafter referred to collectively as the “Obligations”):

(a) the full and prompt payment when due, whether by acceleration or otherwise, either before or after maturity thereof, of the Notes made by Borrower to the order of the Lenders in the aggregate principal face amount of Sixty Million and No/100 Dollars ($60,000,000.00), together with interest as provided in the Notes and together with any replacements, supplements, renewals, modifications, consolidations, restatements, increases and extensions thereof (the “Initial Notes”); and

(b) the full and prompt payment when due, whether by acceleration or otherwise, either before or after maturity thereof, of each other note as may be issued under that certain Credit Agreement dated of even date herewith (hereinafter referred to as the “Credit Agreement”) by and among Borrower, Parent, KeyBank, for itself and as agent, and the other lenders now or hereafter a party thereto, together with interest as provided in each such note, together with any replacements, supplements, renewals, modifications, consolidations, restatements, increases, and extensions thereof (the “Additional Notes” and collectively with the “Initial Notes”, the “Note”); and

(c) the full and prompt payment and performance of any and all obligations of Borrower to Lender under the terms of the Credit Agreement, together with any replacements, supplements, renewals, modifications, consolidations, restatements and extensions thereof; and

(d) the full and prompt payment and performance of any and all obligations of Borrower to Issuing Lender under the terms of the Credit Agreement, together with any replacements, supplements, renewals, modifications, consolidations, restatements and extensions thereof; and

(e) the full and prompt payment and performance of any and all other obligations of Borrower and to Lender under any other agreements, documents or instruments now or hereafter evidencing, securing or otherwise relating to the indebtedness evidenced by the Note or the Credit Agreement (the Note, the Credit Agreement and said other agreements, documents and instruments are hereinafter collectively referred to as the “Loan Documents” and individually referred to as a “Loan Document”). Without limiting the generality of the foregoing, Guarantors acknowledge the terms of Section 2.10 of the Credit Agreement pursuant to which the Total Commitment under the Credit Agreement may be increased to $75,000,000.00 and agree that this Unconditional Guaranty of Payment and Performance (this “Guaranty”) shall extend and be applicable to each new or replacement note delivered by Borrower in connection with any such increase and all other obligations of Borrower under the Loan Documents as a result of such increase without notice to or consent from Guarantors, or any of them. Capitalized terms used herein that are not otherwise defined herein shall have the meanings ascribed thereto in the Credit Agreement.

1. Agreement to Pay and Perform; Costs of Collection. Guarantors do hereby agree that following an Event of Default under the Loan Documents if the Note is not paid by Borrower in accordance with its terms, or if any and all sums which are now or may hereafter become due (after giving effect to any applicable grace or cure periods) from Borrower to Lender under the Loan Documents are not paid by Borrower in accordance with their terms, or if any and all other obligations of Borrower to Lender under the Note or of Borrower or any Guarantor under the other Loan Documents are not performed by Borrower or a Guarantor, as applicable, in accordance with their terms, Guarantors will immediately upon demand make such payments and perform such obligations. Guarantors further agree to pay Lender on demand all reasonable costs and expenses (including court costs and reasonable attorneys’ fees and disbursements) paid or incurred by Lender in endeavoring to collect the Obligations guaranteed hereby, to enforce any of the Obligations of Borrower guaranteed hereby, or any portion thereof, or to enforce this Guaranty, and until paid to Lender, such sums shall bear interest at the Default Rate set forth in the Credit Agreement unless collection from Guarantors of interest at such rate would be contrary to applicable law, in which event such sums shall bear interest at the highest rate which may be collected from Guarantors under applicable law.

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2. Reinstatement of Refunded Payments. If, for any reason, any payment to Lender of any of the Obligations guaranteed hereunder is required to be refunded or returned by Lender to Borrower, or paid or turned over to any other Person, including, without limitation, by reason of the operation of bankruptcy, reorganization, receivership or insolvency laws or similar laws of general application relating to creditors’ rights and remedies now or hereafter enacted, Guarantors agree to pay to the Lender on demand an amount equal to the amount so required to be refunded, returned, paid or turned over (the “Turnover Payment”), the obligations of Guarantors shall not be treated as having been discharged by the original payment to Lender giving rise to the Turnover Payment, and this Guaranty shall be treated as having remained in full force and effect for any such Turnover Payment so made by Lender, as well as for any amounts not theretofore paid to Lender on account of such obligations.

3. Rights of Lender to Deal with Collateral, Borrower and Other Persons. Each Guarantor hereby consents and agrees that Lender may at any time, and from time to time, without thereby releasing any Guarantor from any liability hereunder and without notice to or further consent from any other Guarantor or any other Person or entity, either with or without consideration: release or surrender any lien or other security of any kind or nature whatsoever held by it or by any person, firm or corporation on its behalf or for its account, securing any indebtedness or liability hereby guaranteed; substitute for any collateral so held by it, other collateral of like kind, or of any kind; modify the terms of the Note or the other Loan Documents; extend or renew the Note for any period; grant releases, compromises and indulgences with respect to the Note or the other Loan Documents and to any persons or entities now or hereafter liable thereunder or hereunder; release any other guarantor (including any Guarantor), surety, endorser or accommodation party of the Note or any other Loan Documents; or take or fail to take any action of any type whatsoever. No such action which Lender shall take or fail to take in connection with the Note or the other Loan Documents, or any of them, or any security for the payment of the indebtedness of Borrower to Lender or for the performance of any obligations or undertakings of Borrower or Guarantors, nor any course of dealing with Borrower or any other Person, shall release any Guarantor’s obligations hereunder, affect this Guaranty in any way or afford any Guarantor any recourse against Lender. The provisions of this Guaranty shall extend and be applicable to all replacements, supplements, renewals, amendments, extensions, consolidations, restatements and modifications of the Note and the Loan Documents, and any and all references herein to the Note and the other Loan Documents shall be deemed to include any such replacements, supplements, renewals, extensions, amendments, consolidations, restatements or modifications thereof. Without limiting the generality of the foregoing, Guarantors acknowledge the terms of Section 18.3 of the Credit Agreement and agree that this Guaranty shall extend and be applicable to each new or replacement note delivered by Borrower pursuant thereto without notice to or further consent from Guarantors, or any of them.

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4. No Contest with Lender; Subordination. So long as any of the Obligations hereby guaranteed remain unpaid or undischarged (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, or any Lender has any obligation to make Loans or issue Letters of Credit, Guarantors will not, by paying any sum recoverable hereunder (whether or not demanded by Lender) or by any means or on any other ground, claim any set-off or counterclaim against Borrower in respect of any liability of Guarantors to Borrower or, in proceedings under federal bankruptcy law or insolvency proceedings of any nature, prove in competition with Lender in respect of any payment hereunder or be entitled to have the benefit of any counterclaim or proof of claim or dividend or payment by or on behalf of Borrower or the benefit of any other security for any of the Obligations hereby guaranteed which, now or hereafter, Lender may hold or in which it may have any share. So long as any of the Obligations hereby guaranteed remain unpaid or undischarged (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, Guarantors hereby expressly waive any right of contribution or reimbursement from or indemnity against Borrower or any other Guarantor, whether at law or in equity, arising from any payments made by any Guarantor pursuant to the terms of this Guaranty, and Guarantors acknowledge that Guarantors have no right whatsoever to proceed against Borrower or any other Guarantor for reimbursement of any such payments except for those rights of each Guarantor under the Contribution Agreement or otherwise; provided, however, each Guarantor agrees not to pursue or enforce any of its rights under the Contribution Agreement or otherwise and each Guarantor agrees not to make or receive any payment on account of the Contribution Agreement or otherwise so long as any of the Obligations remain unpaid or undischarged (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, or any Lenders have an obligation to make Loans or issue Letters of Credit. In the event any Guarantor shall receive any payment under or on account of the Contribution Agreement or otherwise while any of the Obligations remain outstanding (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, it shall hold such payment as trustee for Lender and be paid over to Lender on account of the indebtedness of Borrower to Lender but without reducing or affecting in any manner the liability of Guarantors under the other provisions of this Guaranty except to the extent the principal amount or other portion of such indebtedness shall have been reduced by such payment. So long as any of the Obligations hereby guaranteed remain unpaid or undischarged (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, in connection with the foregoing, Guarantors expressly waive any and all rights of subrogation to Lender against Borrower or any other Guarantor, and Guarantors hereby waive any rights to enforce any remedy which Lender may have against Borrower or any other Guarantor and any rights to participate in any collateral for Borrower’s obligations under the Loan Documents. So long as any of the Obligations hereby guaranteed remain unpaid or undischarged (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, Guarantors hereby subordinate any and all indebtedness of Borrower now or hereafter owed to Guarantors to all Obligations guaranteed hereby, and agree with Lender that (a) Guarantors shall not demand or accept any payment from Borrower or any other Guarantor on account of such indebtedness, (b) Guarantors shall not claim any offset or other reduction of Guarantors’ obligations hereunder because of any such indebtedness, and (c) Guarantors shall not take any action to obtain any interest in any of the security described in and encumbered by the Loan Documents because of any such indebtedness; provided, however, that, if Lender so requests upon the occurrence and during the continuance of an Event of Default, such indebtedness shall be collected, enforced and received by Guarantors as trustee for Lender and be paid over to Lender on account of the indebtedness of Borrower to Lender, but without reducing or affecting in any manner the liability of Guarantors under the other provisions of this Guaranty except to the extent the principal amount or other portion of such outstanding indebtedness shall have been reduced by such payment.

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5. Waiver of Defenses. Guarantors hereby agree that their obligations hereunder shall not be affected or impaired by, and hereby waive and agree not to assert or take advantage of any defense based on:

(a) (i) any change in the amount, interest rate or due date or other term of any of the obligations hereby guaranteed, (ii) any change in the time, place or manner of payment of all or any portion of the obligations hereby guaranteed, (iii) any amendment or waiver of, or consent to the departure from or other indulgence with respect to, the Credit Agreement, any other Loan Document, or any other document or instrument evidencing or relating to any obligations hereby guaranteed, or (iv) any waiver, renewal, extension, addition, or supplement to, or deletion from, or any other action or inaction under or in respect of, the Credit Agreement, any of the other Loan Documents, or any other documents, instruments or agreements relating to the obligations hereby guaranteed or any other instrument or agreement referred to therein or evidencing any obligations hereby guaranteed or any assignment or transfer of any of the foregoing;

(b) any subordination of the payment of the obligations hereby guaranteed to the payment of any other liability of the Borrower or any other Person;

(c) any act or failure to act by Borrower or any other Person which may adversely affect any Guarantor’s subrogation rights, if any, against Borrower or any other Person to recover payments made under this Guaranty;

(d) any nonperfection or impairment of any security interest or other Lien on any collateral, if any, securing in any way any of the obligations hereby guaranteed;

(e) any application of sums paid by the Borrower or any other Person with respect to the liabilities of Lender, regardless of what liabilities of the Borrower remain unpaid;

(f) any defense of Borrower, including without limitation, the invalidity, illegality or unenforceability of any of the Obligations;

(g) either with or without notice to Guarantors, any renewal, extension, modification, amendment or other changes in the Obligations, including but not limited to any material alteration of the terms of payment or performance of the Obligations; or

(h) any statute of limitations in any action hereunder or for the collection of the Note or for the payment or performance of any obligation hereby guaranteed;

(i) the incapacity, lack of authority, death or disability of Borrower or any other Person, or the failure of Lender to file or enforce a claim against the estate (either in administration, bankruptcy or in any other proceeding) of Borrower or any Guarantor or any other Person;

(j) the dissolution or termination of existence of Borrower, any Guarantor or any other Person;

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(k) the voluntary or involuntary liquidation, sale or other disposition of all or substantially all of the assets of Borrower or any Guarantor or any other Person;

(l) the voluntary or involuntary receivership, insolvency, bankruptcy, assignment for the benefit of creditors, reorganization, assignment, composition, or readjustment of, or any similar proceeding affecting, Borrower or any Guarantor or any other Person or entity, or any of Borrower’s or any Guarantor’s or any other Person’s properties or assets;

(m) the damage, destruction, condemnation, foreclosure or surrender of all or any part of the Real Estate owned by any Guarantor or any of the improvements located thereon;

(n) the failure of Lender to give notice of the existence, creation or incurring of any new or additional indebtedness or obligation of Borrower or of any action or nonaction on the part of any other Person whomsoever in connection with any obligation hereby guaranteed;

(o) any failure or delay of Lender to commence an action against Borrower or any other Person, to assert or enforce any remedies against Borrower under the Note or the other Loan Documents, or to realize upon any security;

(p) any failure of any duty on the part of Lender to disclose to any Guarantor any facts it may now or hereafter know regarding Borrower (including, without limitation Borrower’s financial condition), any other Person or any assets or liabilities of such Persons, whether such facts materially increase the risk to Guarantors or not (it being agreed that Guarantors assume responsibility for being informed with respect to such information);

(q) failure to accept or give notice of acceptance of this Guaranty by Lender;

(r) failure to make or give notice of presentment and demand for payment of any of the indebtedness or performance of any of the obligations hereby guaranteed;

(s) failure to make or give protest and notice of dishonor or of default to Guarantors or to any other party with respect to the indebtedness or performance of obligations hereby guaranteed;

(t) any and all other notices whatsoever to which Guarantors might otherwise be entitled;

(u) any lack of diligence by Lender in collection, protection or realization upon any collateral securing the payment of the indebtedness or performance of obligations hereby guaranteed;

(v) the invalidity or unenforceability of the Note, or any of the other Loan Documents, or any assignment or transfer of the foregoing;

(w) the compromise, settlement, release or termination of any or all of the obligations of Borrower under the Note or the other Loan Documents;

(x) any transfer by Borrower or any other Person of all or any part of any security encumbered by the Loan Documents;

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(y) the failure of Lender to perfect any security or to extend or renew the perfection of any security; or

(z) to the fullest extent permitted by law, any other legal, equitable or surety defenses whatsoever to which Guarantors might otherwise be entitled, it being the intention that the obligations of Guarantors hereunder are absolute, unconditional and irrevocable.

Each Guarantor understands that the exercise by Lender of certain rights and remedies may affect or eliminate such Guarantor’s right of subrogation, indemnification, reimbursement and/or contribution against the Borrower or the other Guarantor and that such Guarantor may therefore incur partially or totally nonreimbursable liability hereunder. Nevertheless, Guarantors hereby authorize and empower Lender, its successors, endorsees and assigns, to exercise in its or their sole discretion, any rights and remedies, or any combination thereof, which may then be available, it being the purpose and intent of Guarantors that the obligations hereunder shall be absolute, continuing, independent and unconditional under any and all circumstances. Notwithstanding any other provision of this Guaranty to the contrary, so long as any of the Obligations hereby guaranteed remain unpaid or undischarged (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) or subject to any bankruptcy preference period or any other possibility of disgorgement, each Guarantor hereby waives and releases any claim or other rights which such Guarantor may now have or hereafter acquire against the Borrower, any other Guarantor or any other Person of all or any of the obligations of Guarantors hereunder that arise from the existence or performance of such Guarantor’s obligations under this Guaranty or any of the other Loan Documents, including, without limitation, any right of subrogation, reimbursement, exoneration, contribution or indemnification, any right to participate in any claim or remedy of Lender against the Borrower, any other Guarantor or any other Person, or any collateral which Lender now has or hereafter acquires, whether or not such claim, remedy or right arises in equity or under contract, statute or common law, by any payment made hereunder or otherwise, including, without limitation, the right to take or receive from the Borrower or any other Guarantor, directly or indirectly, in cash or other property or by setoff or in any other manner, payment or security on account of such claim or other rights except for those rights of each Guarantor under the Contribution Agreement; provided, however, each Guarantor agrees not to pursue or enforce any of its rights under the Contribution Agreement and each Guarantor agrees not to make or receive any payment on account of the Contribution Agreement so long as any of the Obligations remain unpaid or undischarged or any Lender has any obligation to make Loans or issue Letters of Credit. In the event any Guarantor shall receive any payment under or on account of the Contribution Agreement, it shall hold such payment as trustee for Lender and be paid over to Lender on account of the indebtedness of Borrower to Lender but without reducing or affecting in any manner the liability of Guarantors under the other provisions of this Guaranty except to the extent the principal amount or other portion of such indebtedness shall have been reduced by such payment.

6. Guaranty of Payment and Performance and Not of Collection. This is a Guaranty of payment and performance and not of collection. The liability of Guarantors under this Guaranty shall be primary, direct and immediate and not conditional or contingent upon the pursuit of any remedies against Borrower or any other Person, nor against securities or liens available to Lender, its successors, successors in title, endorsees or assigns. Guarantors hereby waive any right to require that an action be brought against Borrower or any other Person or to require that resort be had to any security or to any balance of any deposit account or credit on the books of Lender in favor of Borrower or any other Person.

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7. Rights and Remedies of Lender. In the event of an Event of Default under the Note or the other Loan Documents, or any of them, that is continuing (it being understood that, except as specifically provided in §12.2(b) of the Credit Agreement, the Lender has no obligation to accept cure after an Event of Default occurs), Lender shall have the right to enforce its rights, powers and remedies thereunder or hereunder or under any other Loan Document, in any order, and all rights, powers and remedies available to Lender in such event shall be nonexclusive and cumulative of all other rights, powers and remedies provided thereunder or hereunder or by law or in equity. Accordingly, Guarantors hereby authorize and empower Lender upon the occurrence and during the continuance of any Event of Default under the Note or the other Loan Documents, at its sole discretion, and without notice to Guarantors or any other Person (except to the extent specifically required under a Loan Document or by operation of law), to exercise any right or remedy which Lender may have, including, but not limited to, foreclosure, exercise of rights of power of sale, acceptance of a deed or an assignment in lieu of foreclosure, appointment of a receiver or exercise of remedies against personal property, as to any security, whether real, personal or intangible. At any public or private sale of any security or collateral for any of the Obligations guaranteed hereby, whether by foreclosure or otherwise, Lender may, in its discretion, purchase all or any part of such security or collateral so sold or offered for sale for its own account and may apply against the amount bid therefor all or any part of the balance due it pursuant to the terms of the Note or any other Loan Document without prejudice to Lender’s remedies hereunder against Guarantors for deficiencies. If the Obligations guaranteed hereby are partially paid by reason of the election of Lender to pursue any of the remedies available to Lender, or if such Obligations are otherwise partially paid, this Guaranty shall nevertheless remain in full force and effect, and Guarantors shall remain liable for the entire balance of the Obligations guaranteed hereby even though any rights which Guarantors may have against Borrower or any other Person may be destroyed or diminished by the exercise of any such remedy.

8. Application of Payments. Guarantors hereby authorize Lender, without notice to Guarantors, to apply all payments and credits received from Borrower or from Guarantors or realized from any security in such manner and in such priority as Lender in its sole judgment shall see fit to the Obligations.

9. Business Failure, Bankruptcy or Insolvency. In the event of the business failure of any Guarantor or if there shall be pending any bankruptcy or insolvency case or proceeding with respect to any Guarantor under federal bankruptcy law or any other applicable law or in connection with the insolvency of any Guarantor, or if a liquidator, receiver, or trustee shall have been appointed for any Guarantor or any Guarantor’s properties or assets, Lender may file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of Lender allowed in any proceedings relative to such Guarantor, or any of such Guarantor’s properties or assets, and, irrespective of whether the indebtedness or other obligations of Borrower guaranteed hereby shall then be due and payable, by declaration or otherwise, Lender shall be entitled and empowered to file and prove a claim for the whole amount of any sums or sums owing with respect to the indebtedness or other obligations of Borrower guaranteed hereby, and to collect and receive any moneys or other property payable or deliverable on any such claim. Guarantors covenant and agree that upon the commencement of a voluntary or involuntary bankruptcy proceeding by or against Borrower, Guarantors shall not seek a supplemental stay or otherwise pursuant to 11 U.S.C. §105 or any other provision of the Bankruptcy Code, as amended, or any other debtor relief law (whether statutory, common law, case law, or otherwise) of any jurisdiction whatsoever, now or hereafter in effect, which may be or become applicable, to stay, interdict, condition, reduce or inhibit the ability of Lender to enforce any rights of Lender against Guarantors by virtue of this Guaranty or otherwise.

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10. Covenants of Guarantor. Guarantors hereby covenant and agree with Lender that until all indebtedness guaranteed hereby has been completely repaid (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) and all obligations and undertakings of Borrower under, by reason of, or pursuant to the Note and the other Loan Documents have been completely performed (excluding contingent obligations that survive termination of the Credit Agreement to the extent a Lender has not made a demand or brought a claim related to such contingent obligations) and Lender has no further obligation to make Loans or issue Letters of Credit, Guarantors will comply with any and all covenants applicable to Guarantors set forth in the Credit Agreement.

11. Rights of Set-off. Regardless of the adequacy of any collateral, during the continuance of any Event of Default under the Note or the other Loan Documents, Lender may at any time and without notice to Guarantors set-off and apply the whole or any portion or portions of any or all deposits (general or specific, time or demand, provisional or final, regardless of currency, maturity, or branch of Lender where the deposits are held) now or hereafter held by Lender against amounts payable under this Guaranty, whether or not any other person or persons could also withdraw money therefrom.

12. Changes in Writing; No Revocation. This Guaranty may not be changed orally, and no obligation of Guarantors can be released or waived by Lender except as provided in §§5.3 and 27 of the Credit Agreement. This Guaranty shall be irrevocable by Guarantors until all indebtedness guaranteed hereby has been completely repaid and all obligations and undertakings of Borrower under, by reason of, or pursuant to the Note, the Letters of Credit and the Loan Documents have been completely performed and the Lenders have no further obligation to advance Loans or issue Letters of Credit under the Credit Agreement.

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13. Notices. All notices, demands or requests provided for or permitted to be given pursuant to this Guaranty (hereinafter in this paragraph referred to as “Notice”) must be in writing and shall be deemed to have been properly given or served by personal delivery or by sending same by overnight courier or by depositing the same in the United States mail, postpaid and registered or certified, return receipt requested, at the addresses set forth below. Each Notice shall be effective upon being delivered personally or upon being sent by overnight courier or upon being deposited in the United States Mail as aforesaid. The time period in which a response to any such Notice must be given or any action taken with respect thereto, however, shall commence to run from the date of receipt if personally delivered or sent by overnight courier or, if so deposited in the United States Mail, the earlier of three (3) Business Days following such deposit and the date of receipt as disclosed on the return receipt. Rejection or other refusal to accept or the inability to deliver because of changed address of which no Notice was given shall be deemed to be receipt of the Notice sent. By giving at least fifteen (15) days prior Notice thereof, Guarantors or Lender shall have the right from time to time and at any time during the term of this Guaranty to change their respective addresses and each shall have the right to specify as its address any other address within the United States of America. For the purposes of this Guaranty:

The address of Lender is:

KeyBank National Association, as Agent

4910 Tiedeman Road, 3^rd Floor

Brooklyn, Ohio 44114

Attn: Real Estate Capital Services

with a copy to:

KeyBank National Association

127 Public Square

Cleveland, Ohio 44114-1306

Attn: Jason Weaver

The address of Guarantors is:

c/o Gladstone Commercial Corporation

1521 Westbranch Drive

Suite 200

McLean, Virginia 22102

Attn: Danielle Jones

14. Governing Law. GUARANTORS ACKNOWLEDGE AND AGREE THAT THIS GUARANTY AND THE OBLIGATIONS OF GUARANTORS HEREUNDER SHALL PURSUANT TO SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW BE GOVERNED BY AND INTERPRETED AND DETERMINED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

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15. CONSENT TO JURISDICTION; WAIVERS. EACH GUARANTOR HEREBY IRREVOCABLY AND UNCONDITIONALLY (A) SUBMITS TO PERSONAL JURISDICTION IN THE STATE OF NEW YORK OVER ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS GUARANTY, AND (B) WAIVES ANY AND ALL PERSONAL RIGHTS UNDER THE LAWS OF ANY STATE (I) TO THE RIGHT, IF ANY, TO TRIAL BY JURY(LENDER HAVING ALSO WAIVED SUCH RIGHT TO TRIAL BY JURY), (II) TO OBJECT TO JURISDICTION WITHIN THE STATE OF NEW YORK OR VENUE IN ANY PARTICULAR FORUM WITHIN THE STATE OF NEW YORK, AND (III) TO THE RIGHT, IF ANY, TO CLAIM OR RECOVER ANY SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES OTHER THAN OR IN ADDITION TO ACTUAL DAMAGES. EACH LENDER IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY AND ALL RIGHTS UNDER THE LAWS OF ANY STATE TO THE RIGHT, IF ANY, TO TRIAL BY JURY. EACH GUARANTOR AGREES 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 MAY BE MADE BY CERTIFIED OR REGISTERED MAIL, RETURN RECEIPT REQUESTED, DIRECTED TO SUCH GUARANTOR AT THE ADDRESS SET FORTH IN PARAGRAPH 13 ABOVE, AND SERVICE SO MADE SHALL BE COMPLETE FIVE (5) DAYS AFTER THE SAME SHALL BE SO MAILED. NOTHING CONTAINED HEREIN, HOWEVER, SHALL PREVENT LENDER FROM BRINGING ANY SUIT, ACTION OR PROCEEDING OR EXERCISING ANY RIGHTS AGAINST ANY SECURITY AND AGAINST GUARANTORS PERSONALLY, AND AGAINST ANY PROPERTY OF GUARANTORS, WITHIN ANY OTHER STATE. INITIATING SUCH SUIT, ACTION OR PROCEEDING OR TAKING SUCH ACTION IN ANY STATE SHALL IN NO EVENT CONSTITUTE A WAIVER OF THE AGREEMENT CONTAINED HEREIN THAT THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN THE RIGHTS AND OBLIGATIONS OF GUARANTORS AND LENDER HEREUNDER OR OF THE SUBMISSION HEREIN MADE BY GUARANTORS TO PERSONAL JURISDICTION WITHIN THE STATE OF NEW YORK EACH GUARANTOR HEREBY WAIVES ANY OBJECTION THAT IT MAY NOW OR HEREAFTER HAVE TO THE VENUE OF ANY SUCH SUIT OR ANY SUCH COURT OR THAT SUCH SUIT IS BROUGHT IN AN INCONVENIENT COURT. EACH GUARANTOR CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY LENDER HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH LENDER WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVERS AND ACKNOWLEDGE THAT LENDER HAS BEEN INDUCED TO ENTER INTO THIS GUARANTY AND THE OTHER LOAN DOCUMENTS TO WHICH THEY ARE PARTIES BY, AMONG OTHER THINGS, THE WAIVERS AND CERTIFICATIONS CONTAINED IN THIS PARAGRAPH 15. EACH GUARANTOR ACKNOWLEDGES THAT THEY HAVE HAD AN OPPORTUNITY TO REVIEW THIS PARAGRAPH 15 WITH THEIR LEGAL COUNSEL AND THAT SUCH GUARANTOR AGREES TO THE FOREGOING AS THEIR FREE, KNOWING AND VOLUNTARY ACT.

16. Successors and Assigns. The provisions of this Guaranty shall be binding upon Guarantors and their respective heirs, successors, successors in title, legal representatives, and assigns, and shall inure to the benefit of Lender, its successors, successors in title, legal representatives and assigns. No Guarantor shall assign or transfer any of its rights or obligations under this Guaranty without the prior written consent of Lender.

17. Assignment by Lender. This Guaranty is assignable by Lender in whole or in part in conjunction with any assignment of the Note or portions thereof, and any assignment hereof or any transfer or assignment of the Note or portions thereof by Lender shall operate to vest in any such assignee the rights and powers, in whole or in part, as appropriate, herein conferred upon and granted to Lender.

18. Severability. If any term or provision of this Guaranty shall be determined to be illegal or unenforceable, all other terms and provisions hereof shall nevertheless remain effective and shall be enforced to the fullest extent permitted by law.

19. Disclosure. Guarantors agree that in addition to disclosures made in accordance with standard banking practices, any Lender may disclose information obtained by such Lender pursuant to this Guaranty to assignees or participants and potential assignees or participants hereunder subject to the terms of the Credit Agreement.

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20. No Unwritten Agreements. THIS GUARANTY REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

21. Time of the Essence. Time is of the essence with respect to each and every covenant, agreement and obligation of Guarantors under this Guaranty.

22. Ratification. Guarantors do hereby restate, reaffirm and ratify each and every warranty and representation regarding Guarantors or their Subsidiaries set forth in the Credit Agreement as if the same were more fully set forth herein.

23. Joint and Several Liability. Each of the Guarantors covenants and agrees that each and every covenant and obligation of Guarantors hereunder shall be the joint and several obligations of each of the Guarantors.

24. Fair Consideration. The Guarantors represent that the Guarantors have received fair consideration for the execution and delivery of this Guaranty.

25. Counterparts. This Guaranty and any amendment hereof may be executed in several counterparts and by each party on a separate counterpart, each of which when so executed and delivered shall be an original, and all of which together shall constitute one instrument. In proving this Guaranty it shall not be necessary to produce or account for more than one such counterpart signed by the party against whom enforcement is sought.

26. Definitions. All terms used herein and not otherwise defined herein shall have the meanings set forth in the Credit Agreement.

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IN WITNESS WHEREOF, Guarantors have executed this Guaranty under seal as of this 7^th day of August, 2013.

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Lender joins in the execution of this Guaranty for the sole and limited purpose of evidencing its agreement to waiver of the right to trial by jury contained in Paragraph 15 hereof and Section 25 of the Credit Agreement.