INCREASE AGREEMENT

This Increase Agreement (this “Agreement”), dated as of August 13, 2015 (the “Increase Effective Date”), is by and among NSA OP, LP and certain of its Subsidiaries party to the Credit Agreement referred to below (collectively, the “Borrowers”), NATIONAL STORAGE AFFILIATES TRUST, a Maryland real estate investment trust (the “REIT”), NATIONAL STORAGE AFFILIATES HOLDINGS, LLC, a Delaware limited liability company (the “REIT Parent” and, together with the REIT, collectively, the “Guarantors”), the lender parties signatory hereto (each, an “Expansion Lender” and collectively the “Expansion Lenders”) and KeyBank National Association, as Administrative Agent (the “Administrative Agent”) for the Lenders (as hereinafter defined). All capitalized terms used herein without definitions shall have the meanings given such terms in the Credit Agreement (as hereinafter defined).

WHEREAS, the Credit Agreement, dated as of April 1, 2014 (as amended, modified, supplemented or restated and in effect from time to time, the “Credit Agreement”), is by and among the Borrowers, the Guarantors, the Administrative Agent and the financial institutions which are or become a party thereto as lenders (each a “Lender” and, collectively, the “Lenders”);

WHEREAS, Section 2.16 of the Credit Agreement provides that the Borrowers may request, upon notice to the Administrative Agent and satisfaction of the conditions set forth in Section 2.16(b) (the “Increase Conditions”), that the Revolving Commitments and/or term loans made under the Credit Agreement be increased by an aggregate amount of up to $332,500,000;

WHEREAS, on July 21, 2014, the Borrowers requested and the Lenders agreed to an increase in the Revolving Commitments and term loans made under the Credit Agreement by an aggregate amount equal to $57,500,000, with such Increase being allocated $37,942,176.86 to the Revolving Commitments and $19,557,823.14 to the Term Loan, so that after giving effect to the Increase, the aggregate Revolving Commitments equaled $280,442,176.87 and the aggregate Term Loan equaled $144,557,823.13;

WHEREAS, the Borrowers have requested that the Revolving Commitments and term loans made under the Credit Agreement be further increased by an aggregate amount equal to $125,000,000.00 (the “Increase”), with such Increase being allocated $69,557,823.13 to the Revolving Commitments and $55,442,176.87 to the Term Loan, so that after giving effect to the Increase, the aggregate Revolving Commitments will equal $350,000,000.00 and the aggregate Term Loan will equal $200,000,000.00. The increase to the Term Loan will constitute an Incremental Term Loan under the Credit Agreement;

WHEREAS, each Expansion Lender has agreed to fund that portion of the Increase in the amounts and types of Loans set forth beside such Expansion Lender’s name on Annex 1 attached hereto.    

WHEREAS, an updated Schedule 2, after giving effect to the Increase, is attached hereto as Annex 2; and

WHEREAS, the Administrative Agent is willing to give effect to the Increase provided that the Borrowers, the Administrative Agent and the Expansion Lenders enter into this Agreement;

NOW THEREFORE, the parties hereto hereby agree as follows:

1.Funding of Increase. Pursuant to Section 2.16 of the Credit Agreement, each Expansion Lender hereby agrees to fund, and make one or more loans in immediately available funds to the Borrowers on the Increase Effective Date in each case in an aggregate principal amount equal to that portion of the Increase in the applicable type of Loan in the amount set forth beside such Expansion Lender’s name on Annex 1 attached hereto (less the amount of Revolving Commitments and Term Loan being reallocated to such Expansion Lender on the date hereof, as applicable), with each Lender (including each Expansion Lender) having the resulting Revolving Commitment Amount, Revolving Commitment Percentage, Term Loan Commitment Amount (it being acknowledged that each Term Loan Commitment terminates upon the funding of the applicable Term Loan) and Term Loan Percentage set forth on the new Schedule 1.1 attached as Annex 2 hereto. Each Expansion Lender will enter into an Augmenting Lender Agreement in substantially the form attached to the Credit Agreement as Exhibit K in connection with the Increase (each an “Augmenting Lender Agreement”).

2.    Amendment of Schedule 1.1. Schedule 1.1 to the Credit Agreement is hereby amended to reflect the Lenders’ adjusted commitments and the increase in the Revolving Commitments and the Term Loan, as set forth on Annex 2 attached hereto, after giving effect to the Increase and to certain reallocations of the Term Loan and Revolving Commitments.

3.    Affirmation and Acknowledgment. Subject to the terms of the Loan Documents, the Borrowers hereby ratify and confirm all of their Obligations to the Lenders, including, without limitation, the Loans, the Notes and the other Loan Documents, and the Borrowers hereby affirm their absolute and unconditional promise to pay to the Lenders all Obligations under (and as defined in) the Credit Agreement, both before and after giving effect to this Agreement. The Guarantors hereby consent to the transactions contemplated by this Agreement and acknowledge and agree that the guaranties made by them contained in the Guaranty are, and shall remain, in full force and effect after giving effect to this Agreement.

4.    Representations and Warranties. Each of the Borrowers and Guarantors hereby jointly and severally represents and warrants to the Lenders as follows:

(a)    The execution, delivery and performance of this Agreement by each Borrower and Guarantor (i) are within the authority of such Loan Party, (ii) have been duly authorized by all necessary proceedings on the part of such Loan Party and any general partner thereof, (iii) do not conflict with or result in any breach or contravention of any provision of law, statute, rule or regulation to which such Loan Party is subject or any judgment, order, writ, injunction, license or permit applicable to such Loan Party, (iv) do not conflict with any provision of the organizational documents of such Loan Party or any general partner or manager thereof, and (v) do not contravene any provisions of, or constitute Default or Event of Default under the Credit Agreement or a failure to comply with any term, condition or provision of, any other agreement,

instrument, judgment, order, decree, permit, license or undertaking binding upon or applicable to such Loan Party or any of such Loan Party’s properties or in the creation of any mortgage, pledge, security interest, lien, encumbrance or charge upon any of the properties or assets of such Loan Party.

(b)    This Agreement (including the Increase) and the Credit Agreement and other Loan Documents constitute legal, valid and binding obligations of each Loan Party, enforceable in accordance with their respective terms, except as the same may be limited by bankruptcy, insolvency, and other similar laws affecting the rights of creditors generally and the availability of equitable remedies for the enforcement of certain obligations (other than the payment of principal) contained herein or therein and as may be limited by equitable principles generally.

(c)    Other than approvals or consents which have been obtained (written copies of which have been furnished to the Administrative Agent), the execution, delivery and performance by the Borrowers and Guarantors of this Agreement (including the Increase), and the transactions contemplated hereby, do not require any approval or consent of, or filing with, any third party or any governmental agency or authority.

(d)    The representations and warranties made or deemed made by each Loan Party in the Loan Documents to which it is a party shall be true and correct in all material respects (or in all respects to the extent that such representations and warranties are already subject to concepts of materiality) on and as of the Increase Effective Date with the same force and effect as if made on and as of such date except to the extent that such representations and warranties expressly relate solely to an earlier date (in which case such representations and warranties shall have been true and correct in all material respects on and as of such earlier date). For purposes of this clause (d), the representations and warranties contained in Section 7.11 of the Credit Agreement shall be deemed to refer to the most recent statements furnished pursuant to Article IX of the Credit Agreement.

(e)    Both before and immediately after giving effect to this Agreement (including the Increase) and the transactions contemplated hereby, no Default or Event of Default under (and as defined in) the Credit Agreement has occurred and is continuing.

5.    Conditions Precedent. This Agreement shall be deemed to be effective as of the Increase Effective Date, subject to the execution and delivery of the following documents, each in form and substance satisfactory to the Administrative Agent:

(a)    this Agreement executed and delivered by each Borrower, each Guarantor, the Administrative Agent, and the Expansion Lenders;

(b)    one or more Notes substantially in the form of Exhibits H and I to the Credit Agreement issued in favor of each of the Expansion Lenders reflecting their respective Revolving Commitments and Term Loans (the “New Notes”);

(c)    a certificate dated as of the date hereof signed by a duly authorized officer of each Borrower and Guarantor (i) certifying and attaching the resolutions adopted by each Borrower

and Guarantor’s board of directors or trustees (or other appropriate governing body or Persons) authorizing the transactions described herein and evidencing the due authorization, execution and delivery of this Agreement, the New Notes and each of the other Loan Documents to which such Loan Party is a party executed in connection with the Increase, (ii) certifying that the organizational documents of each Borrower and Guarantor have not been amended, modified or rescinded since they were last furnished in writing to the Administrative Agent, and remain in full force and effect as of the date hereof, (iii) certifying that each Borrower and Guarantor is duly formed, validly existing and in good standing under the laws of such entity’s organization, and that there is no pending or to such officer’s knowledge, threatened proceeding for dissolution, liquidation or other similar matter with respect to any Borrower or Guarantor, (iv) certifying that, before and immediately after giving effect to the Increase and this Agreement, (A) the representations and warranties contained in Section 7 of the Credit Agreement and in the other Loan Documents are true and correct in all material respects (or in all respects to the extent that such representations and warranties are already subject to concepts of materiality) on and as of the Increase Effective Date with the same force and effect as if made on and as of such date except to the extent that such representations and warranties expressly relate solely to an earlier date (in which case such representations and warranties shall have been true and correct in such respects on and as of such earlier date) and except that for purposes hereof, the representations and warranties contained in Section 7.11 of the Credit Agreement shall be deemed to refer to the most recent statements furnished pursuant to Article IX of the Credit Agreement, (B) that there has been no material adverse change in the business, assets, operations, condition (financial or otherwise) or properties of any of the Loan Parties since the date of the financial statements most recently delivered to the Administrative Agent pursuant to the Credit Agreement, and (C) no Default or Event of Default exists;

(d)    an Augmenting Lender Agreement executed and delivered by each Expansion Lender;

(e)    favorable opinions of counsel to the Borrowers and Guarantors acceptable to the Administrative Agent with respect to this Agreement and the Increase reflected herein and the New Notes; provided, that the Administrative Agent may, in its sole discretion, permit one or more such opinions to be delivered promptly following the effectiveness of this Agreement; and

(f)    payment by the Borrowers in immediately available funds of the fees agreed to in connection with the Increase.

6.    Miscellaneous Provisions.

(a)    THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO CONTRACTS EXECUTED, AND TO BE FULLY PERFORMED, IN SUCH STATE.

(b)    This Agreement may be executed in any number of counterparts and by different parties hereto on separate counterparts, each of which when so executed and delivered shall be an original, but all of which counterparts taken together shall be deemed to constitute one and the same instrument. The existence of this Agreement may be established by the introduction into

evidence of counterparts that are separately signed, provided they are otherwise identical in all material respects.

IN WITNESS WHEREOF, the undersigned have duly executed this Agreement as of the date first above written.

NSA OP, LP, as Borrower

BY: NATIONAL STORAGE AFFILIATES TRUST, its general partner

By:     /s/ Tamara D. Fischer

Name:     Tamara D. Fischer

Title:     Authorized Signatory

SECURCARE OKLAHOMA I, LLC

SECURCARE OKLAHOMA II, LLC

SECURCARE COLORADO III, LLC

SECURCARE PROPERTIES II, LLC

NSA-OPTIVEST ACQUISITION HOLDINGS, LLC

NSA NORTHWEST HOLDINGS II, LLC

SECURCARE PORTFOLIO HOLDINGS, LLC

AMERICAN MINI STORAGE-SAN ANTONIO, LLC

SECURCARE OF COLORADO SPRINGS #602 GP, LLC

BANKS STORAGE, LLC

ABC RV AND MINI STORAGE, L.L.C.

PORTLAND MINI STORAGE, LLC

HPRH STORAGE, LLC

BAUER NW STORAGE, LLC

S AND S STORAGE, LLC

FREEWAY SELF STORAGE, L.L.C.

ABERDEEN MINI STROAGE, L.L.C.

VANCOUVER MINI STROAGE, LLC

SALEM SELF STOR, LLC

BULLHEAD FREEDOM STORAGE, L.L.C.

SECURCARE OF COLORADO SPRINGS 602, LTD.

EAST BANK STORAGE, L.L.C.

NSA-C HOLDINGS, LLC

NSA-COLTON HOLDINGS, LLC

NSA-G HOLDINGS, LLC

NSA-GSC HOLDINGS, LLC

DAMASCUS MINI STROAGE LLC

SHERWOOD STORAGE, LLC

GRESHAM MINI & RV STORAGE, LLC

WILSONVILLE JUST STORE IT, LLC

TUALATIN STORAGE, LLC

ICDC II, LLC

GAK, LLC

WCAL, LLC

STOREMORE SELF STORAGE - PECOS ROAD, LLC

SECURCARE MOVEIT MCALLEN, LLC

WASHINGTON MURRIETA II, LLC

HOOD RIVER MINI STORAGE, LLC

CANYON ROAD STORAGE, LLC

NSA GSC DR GP, LLC

WASHINGTON MURRIETA IV, LLC, each as a Subsidiary Borrower

By: /s/ Tamara D. Fischer

Name:    Tamara D. Fischer

Title:    Authorized Signatory

NATIONAL STORAGE AFFILIATES TRUST, a Maryland real estate investment trust

By:     /s/ Tamara D. Fischer

Name: Tamara D. Fischer    

Title:     CFO

NATIONAL STORAGE AFFILIATES HOLDINGS, LLC, a Delaware limited liability company

By:     /s/ Tamara D. Fischer

Name:     Tamara D. Fischer

Title:     CFO

GSC Irvine/Main LP, as Guarantor

By: NSA GSC DR GP, LLC, its General Partner

By:     /s/ Tamara D. Fischer

Name:     Tamara D. Fischer

Title:     Authorized Signatory

By:     /s/ James Payne

Name: James Payne

Title: Vice President

By /s/ Brian Gross

Name: Brian Gross

Title: Authorized Signatory

By: /s/ Paul E. Burgan

Name: Paul E. Burgan

Title: Vice President

By: /s/ Danny Stover

Name: Danny Stover

Title: Vice President

KEYBANK NATIONAL ASSOCIATION, as Administrative Agent

By: /s/ Michael P. Szuba

Name: Michael P. Szuba

Title: Vice Preseident

¹ The amounts reflected for the Expansion Lenders in the table include a portion of the Revolving Commitments and Term Loan reallocated to the Expansion Lenders on the date hereof that will not be funded as new loans on the date hereof.