Exhibit 10.8

EXECUTION COPY

This JOINDER AGREEMENT, dated as of September 1, 2011, is delivered pursuant to
Section 7.10 (Additional Grantors) of the Pledge and Security Agreement, dated
as of April 28, 2011 by KBS GKK PARTICIPATION HOLDINGS I, LLC (the “Seller”) and
the Subsidiaries of the Seller listed on the signature pages thereof in favor of
the Goldman Sachs Mortgage Company (the “Pledge and Security Agreement”).
Capitalized terms used herein but not defined herein are used with the meanings
given them in the Pledge and Security Agreement.
By executing and delivering this Joinder Agreement, the undersigned, as provided
in Section 7.10 (Additional Grantors) of the Pledge and Security Agreement,
hereby becomes a party to the Pledge and Security Agreement as a Grantor
thereunder with the same force and effect as if originally named as a Grantor
therein and, without limiting the generality of the foregoing, hereby grants to
the Buyer, as collateral security for the full, prompt and complete payment and
performance when due (whether at stated maturity, by acceleration or otherwise)
of the Guaranteed Obligations of the undersigned, a Lien on and security
interest in, all of its right, title and interest in, to and under the
Collateral of the undersigned and expressly assumes all obligations and
liabilities of a Grantor thereunder.
The information set forth in Annex 1-A and Annex 1-B is hereby added to the
information set forth in Schedules 1 through 6 to the Pledge and Security
Agreement. By acknowledging and agreeing to this Joinder Agreement, the
undersigned hereby agree that this Joinder Agreement may be attached to the
Pledge and Security Agreement and that the Pledged Collateral listed on Annex
1-A to this Pledge Amendment shall be and become part of the Collateral referred
to in the Pledge and Security Agreement and shall secure all Guaranteed
Obligations of the undersigned.
The undersigned hereby represents and warrants that each of the representations
and warranties contained in Article III (Representations and Warranties) of the
Pledge and Security Agreement applicable to it is true and correct on and as the
date hereof as if made on and as of such date.

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EXECUTION COPY

IN WITNESS WHEREOF, the undersigned has caused this Joinder Agreement to be duly
executed and delivered as of the date first above written.
KBS ACQUISITION SUB-OWNER 4, LLC,
a Delaware limited liability company

By:
KBS ACQUISITION SUB, LLC,

a Delaware limited liability company,
its sole member

By:
KBS ACQUISITION HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS GKK PARTICIPATION HOLDINGS I, LLC,

a Delaware limited liability company,
its sole member

By:
KBS DEBT HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS LIMITED PARTNERSHIP,

a Delaware limited partnership,
its manager

By:
KBS REAL ESTATE INVESTMENT TRUST, INC.,

a Maryland corporation,
its sole general partner

By:
/s/ David E. Snyder

David E. Snyder
Chief Financial Officer

[Signatures continued on following page]

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)]

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KBS ACQUISITION SUB-OWNER 5, LLC,
a Delaware limited liability company

By:
KBS ACQUISITION SUB, LLC,

a Delaware limited liability company,
its sole member

By:
KBS ACQUISITION HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS GKK PARTICIPATION HOLDINGS I, LLC,

a Delaware limited liability company,
its sole member

By:
KBS DEBT HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS LIMITED PARTNERSHIP,

a Delaware limited partnership,
its manager

By:
KBS REAL ESTATE INVESTMENT TRUST, INC.,

a Maryland corporation,
its sole general partner

By:
/s/ David E. Snyder

David E. Snyder
Chief Financial Officer

[Signatures continued on following page]

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)

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KBS ACQUISITION SUB-OWNER 6, LLC,
a Delaware limited liability company

By:
KBS ACQUISITION SUB, LLC,

a Delaware limited liability company,
its sole member

By:
KBS ACQUISITION HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS GKK PARTICIPATION HOLDINGS I, LLC,

a Delaware limited liability company,
its sole member

By:
KBS DEBT HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS LIMITED PARTNERSHIP,

a Delaware limited partnership,
its manager

By:
KBS REAL ESTATE INVESTMENT TRUST, INC.,

a Maryland corporation,
its sole general partner

By:
/s/ David E. Snyder

David E. Snyder
Chief Financial Officer

[Signatures continued on following page]

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)

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KBS ACQUISITION SUB-OWNER 7, LLC,
a Delaware limited liability company

By:
KBS ACQUISITION SUB, LLC,

a Delaware limited liability company,
its sole member

By:
KBS ACQUISITION HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS GKK PARTICIPATION HOLDINGS I, LLC,

a Delaware limited liability company,
its sole member

By:
KBS DEBT HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS LIMITED PARTNERSHIP,

a Delaware limited partnership,
its manager

By:
KBS REAL ESTATE INVESTMENT TRUST, INC.,

a Maryland corporation,
its sole general partner

By:
/s/ David E. Snyder

David E. Snyder
Chief Financial Officer

[Signatures continued on following page]

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)

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KBS ACQUISITION SUB-OWNER 1, LLC,
a Delaware limited liability company

By:
KBS ACQUISITION SUB, LLC,

a Delaware limited liability company,
its sole member

By:
KBS ACQUISITION HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS GKK PARTICIPATION HOLDINGS I, LLC,

a Delaware limited liability company,
its sole member

By:
KBS DEBT HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS LIMITED PARTNERSHIP,

a Delaware limited partnership,
its manager

By:
KBS REAL ESTATE INVESTMENT TRUST, INC.,

a Maryland corporation,
its sole general partner

By:
/s/ David E. Snyder

David E. Snyder
Chief Financial Officer

[Signatures continued on following page]

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)

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KBS ACQUISITION SUB-OWNER 8, LLC,
a Delaware limited liability company

By:
KBS ACQUISITION SUB, LLC,

a Delaware limited liability company,
its sole member

By:
KBS ACQUISITION HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS GKK PARTICIPATION HOLDINGS I, LLC,

a Delaware limited liability company,
its sole member

By:
KBS DEBT HOLDINGS, LLC,

a Delaware limited liability company,
its sole member

By:
KBS LIMITED PARTNERSHIP,

a Delaware limited partnership,
its manager

By:
KBS REAL ESTATE INVESTMENT TRUST, INC.,

a Maryland corporation,
its sole general partner

By:
/s/ David E. Snyder

David E. Snyder
Chief Financial Officer

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)

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ACKNOWLEDGED AND AGREED
as of the date first above written:
GOLDMAN SACHS MORTGAGE COMPANY,
a New York limited partnership, as Buyer
By: Goldman Sachs Real Estate Funding Corp.,
its general partner
By:
/s/ Dan Bennett    

Name: Dan Bennett
Title: Authorized Signatory

[JOINDER TO GUARANTOR PLEDGE AND SECURITY AGREEMENT(GOLDMAN FACILITY)