Document:

Assignment and Assumption of Purchase Agreement

 Exhibit 10.79 
 ASSIGNMENT AND ASSUMPTION OF PURCHASE AGREEMENT 
 This Assignment and Assumption of Purchase
Agreement (“Assignment”) is entered into between KBS CAPITAL ADVISORS LLC, a Delaware limited liability company (“Assignor”), and KBS OFFICES AT KENSINGTON, LLC, a Delaware limited liability company (“Assignee”), as of
March 22, 2007 (“Effective Date”). 
 RECITALS 
 A. Pursuant to the terms of that certain Purchase and Sale Agreement dated as of March 20, 2006, by and between CLPF-Kensington, L.P. a Delaware
limited partnership, as seller, and Assignor, as buyer (the “Purchase Agreement”), Assignor agreed to acquire the Property (as such term is defined in the Purchase Agreement) commonly referred to as The Offices at Kensington. 

B. Assignor desires to assign, without recourse, representation or warranty, all of its rights, benefits, liabilities and obligations arising under
the Purchase Agreement (and related documents) to Assignee, and Assignee desires to assume all of said rights, benefits, liabilities and obligations. 
 NOW, THEREFORE, in consideration of the foregoing promises, the mutual undertakings of the parties set forth herein and other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged by the parties, the parties agree as follows: 
 1. Recitals. The above recitals are incorporated herein by reference.

 2. Assignment and Assumption. Assignor hereby transfers, assigns and conveys, without recourse, representation or warranty, express
or implied, all of Assignor’s rights, interests, liabilities and obligations in and to the Property, and all of Assignor’s rights, interests, liabilities and obligations under the Purchase Agreement (and related documents) to acquire same
to Assignee. Assignee hereby assumes all such rights, interests, liabilities and obligations, and joins in all representations, warranties, releases, and indemnities, of Assignor under the Purchase Agreement (and related documents) relating to such
Property and the Purchase Agreement (and related documents) assigned to it above. 
 3. Successors and Assigns. This Assignment shall
be binding upon and inure to the benefit of the parties’ successors and assigns. 
 4. Attorneys’ Fees. In the event any
party institutes any action or proceeding against the other party with regard to this Assignment, the prevailing party of such action shall be entitled to recover from the nonprevailing party (in addition to all other remedies provided by law) its
attorneys’ fees and costs incurred in such action or proceeding. 

 5. Counterparts. This Assignment may be executed in any number of counterparts, each of which
shall be deemed an original, but all of which when taken together shall constitute one and the same instrument. Each counterpart may be delivered by facsimile transmission. The signature page of any counterpart may be detached therefrom without
impairing the legal effect of the signature(s) thereon provided such signature page is attached to any other counterpart identical thereto. 
 Executed as of
the date set forth above. 
  

 S-1 

 ASSIGNOR: 
 KBS CAPITAL
ADVISORS LLC, 
 a Delaware limited liability company 
  

			
	 By:
	 	 /s/ Charles J. Schreiber, Jr.

		 	Charles J. Schreiber, Jr.
		 	Chief Executive Officer

  

 S-1 

 ASSIGNEE: 
  

									
	 KBS OFFICES AT KENSINGTON, LLC,

	 a Delaware limited liability company

		
	 By:
	 	KBS REIT ACQUISITION XII, LLC,
		 	 a Delaware limited liability company, its sole member

			
		 	By:	 	KBS LIMITED PARTNERSHIP,
		 		 	 a Delaware limited partnership, its sole member

				
		 		 	By:	 	KBS REAL ESTATE INVESTMENT TRUST, INC.,
		 		 		 	 a Maryland corporation, general partner

					
		 		 		 	 By:
	 	 /s/ Charles J. Schreiber, Jr.

		 		 		 		 	Charles J. Schreiber, Jr.
		 		 		 		 	Chief Executive Officer

  

 S-2First Amendment to Purchase and Sale Agreement

 Exhibit 10.80 
 FIRST AMENDMENT TO 
 PURCHASE AND SALE AGREEMENT 
 THIS FIRST AMENDMENT TO PURCHASE AND SALE AGREEMENT (this “Amendment”) dated as of March 23, 2007, is entered into by and between
KBS OFFICES AT KENSINGTON, LLC, a Delaware limited liability company (“Purchaser”), and CLPF-KENSINGTON, L.P., a Delaware limited partnership (“Seller”), with reference to the following recitals: 
 RECITALS 
 A. Seller and KBS
Capital Advisors LLC, a Delaware limited liability company (“Original Purchaser”) are parties to that certain Purchase and Sale Agreement, dated March 20, 2007 (the “Purchase Agreement”). All
initially-capitalized terms not otherwise defined herein shall have the meanings set forth in the Purchase Agreement unless the context clearly indicates otherwise. 
 B. Original Purchaser subsequently assigned the Purchase Agreement to Purchaser pursuant to that certain Assignment and Assumption of Purchase Agreement dated March 22, 2007. 
 C. Seller and Purchaser mutually desire to amend the Purchase Agreement as provided below. 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows: 
 AGREEMENT 
 1. Extension of Due Diligence Period. The Due Diligence Period shall be, and hereby is, extended to and shall expire on March 26, 2007, at 5:00 p.m. Central Time. 
 2. No Other Amendments; This Amendment Governs and Controls. Except as expressly modified hereby, the Purchase Agreement shall remain
unmodified and in full force and effect. To the extent any of the provisions of this Amendment are inconsistent with any of the provisions set forth in the Purchase Agreement, the provisions of this Amendment shall govern and control. 
 3. Counterparts. This Amendment may be executed in any number of counterparts, each of which shall be deemed an original, but all of which
when taken together shall constitute one and the same instrument. Each counterpart may be delivered by facsimile transmission. The signature page of any counterpart may be detached therefrom without impairing the legal effect of the signature(s)
thereon provided such signature page is attached to any other counterpart identical thereto. 
 IN WITNESS WHEREOF, Purchaser and Seller have
executed this Amendment as of the day and year first above written. 
 [SIGNATURES ON NEXT PAGE] 

 PURCHASER: 
  

									
	 KBS OFFICES AT KENSINGTON, LLC,

	 a Delaware limited liability company

		
	 By:
	 	KBS REIT ACQUISITION XII, LLC,
		 	 a Delaware limited liability company, its sole member

			
		 	By:	 	KBS LIMITED PARTNERSHIP,
		 		 	 a Delaware limited partnership, its sole member

				
		 		 	By:	 	KBS REAL ESTATE INVESTMENT TRUST, INC.,
		 		 		 	 a Maryland corporation, general partner

					
		 		 		 	 By:
	 	 /s/ Charles J. Schreiber, Jr.

		 		 		 		 	Charles J. Schreiber, Jr.
		 		 		 		 	Chief Executive Officer

  

 S-1 

 SELLER: 
  

															
	
	 CLPF – KENSINGTON, L.P., a Delaware limited partnership

		
	 By:
	 	CLPF – Kensington GP, LLC, a Delaware limited liability company
			
		 	By:	 	Clarion Lion Properties Fund Holdings, L.P., a Delaware limited partnership
				
		 		 	By:	 	CLPF - Holdings LLC, a Delaware limited liability company, its General Partner
					
		 		 		 	By:	 	Clarion Lion Properties Fund Holdings REIT, LLC, a Delaware limited liability company, its sole member
						
		 		 		 		 	By:	 	Clarion Lion Properties Fund, LLC, a Delaware limited liability company, its managing member
							
		 		 		 		 		 	By:	 	ING Clarion Partners, LLC, a New York limited liability company, its manager

  

																																			
												
		    		    		 		 		 		 		 		 	 By:
	 	 /s/ Douglas F. Wolski
	 		 	
		    		    		 		 		 		 		 		 	 Name:
	 	Douglas F. Wolski	 		 	
		    		    		 		 		 		 		 		 	 Title:
	 	Authorized Signatory	 		 	

  

 S-2Reinstatement and Second Amendment to Purchase and Sale Agreement

 Exhibit 10.81 
 REINSTATEMENT AND SECOND AMENDMENT TO 
 PURCHASE AND SALE AGREEMENT 
 THIS REINSTATEMENT AND SECOND AMENDMENT TO PURCHASE AND SALE AGREEMENT (this “Amendment”) dated as of March 27, 2007, is entered
into by and between KBS OFFICES AT KENSINGTON, LLC, a Delaware limited liability company (“Purchaser”), and CLPF-KENSINGTON, L.P., a Delaware limited partnership (“Seller”), with reference to the following recitals:

 RECITALS 
 A.
Seller and Purchaser (as permitted assignee of KBS Capital Advisors LLC, a Delaware limited liability company) are parties to that certain Purchase and Sale Agreement, dated March 20, 2007, as amended by First Amendment to Purchase and Sale
Agreement dated as of March 23, 2007 (as amended, the “Purchase Agreement”). All initially-capitalized terms not otherwise defined herein shall have the meanings set forth in the Purchase Agreement unless the context clearly
indicates otherwise. 
 B. The Purchase Agreement has terminated in accordance with its terms arising out of Purchaser’s delivery of a
termination notice. 
 C. Seller and Buyer mutually desire to reinstate the Purchase Agreement and to amend the Purchase Agreement as
provided below. 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto hereby agree as follows: 
 AGREEMENT 
 1. Reinstatement of Purchase Agreement. The termination of the Purchase Agreement is hereby revoked and, except as expressly modified by
this Amendment, the Purchase Agreement shall be, and hereby is, reinstated in its entirety and shall be in full force and effect as if the same had never been terminated. 
 2. Credit towards the Purchase Price. At Closing, Purchaser shall receive a credit towards the Purchase Price equal to $169,009. 
 3. New Leasing Costs. The reference to “Schedule 7.2(b)” in Section 7.2(b) of the Purchase Agreement is deleted, and
“Exhibit L” is substituted in lieu thereof. 
 4. Service Contracts. “Exhibit H” to the
Purchase Agreement is hereby deleted, and “Exhibit H (Revised)” attached hereto is substituted in lieu thereof. 
 5.
No Other Amendments; This Amendment Governs and Controls. Except as expressly modified hereby, the Purchase Agreement shall remain unmodified and in full force and effect. To the extent any of the provisions of this Amendment are
inconsistent with any of the provisions set forth in the Purchase Agreement, the provisions of this Amendment shall govern and control. 

 6. Counterparts. This Amendment may be executed in any number of counterparts, each of
which shall be deemed an original, but all of which when taken together shall constitute one and the same instrument. Each counterpart may be delivered by facsimile transmission. The signature page of any counterpart may be detached therefrom
without impairing the legal effect of the signature(s) thereon provided such signature page is attached to any other counterpart identical thereto. 
 IN WITNESS WHEREOF, Purchaser and Seller have executed this Amendment as of the day and year first above written. 
 [SIGNATURES ON
NEXT PAGE] 
  

 2 

 PURCHASER: 
  

									
	 KBS OFFICES AT KENSINGTON, LLC,

	 a Delaware limited liability company

		
	 By:
	 	KBS REIT ACQUISITION XII, LLC,
		 	 a Delaware limited liability company, its sole member

			
		 	By:	 	KBS LIMITED PARTNERSHIP,
		 		 	 a Delaware limited partnership, its sole member

				
		 		 	By:	 	KBS REAL ESTATE INVESTMENT TRUST, INC.,
		 		 		 	 a Maryland corporation, general partner

					
		 		 		 	 By:
	 	 /s/ Charles J. Schreiber, Jr.

		 		 		 		 	Charles J. Schreiber, Jr.
		 		 		 		 	Chief Executive Officer

  

 S-1 

 SELLER: 
  

															
	
	 CLPF – KENSINGTON, L.P., a Delaware limited partnership

		
	 By:
	 	CLPF – Kensington GP, LLC, a Delaware limited liability company
			
		 	By:	 	Clarion Lion Properties Fund Holdings, L.P., a Delaware limited partnership
				
		 		 	By:	 	CLPF - Holdings LLC, a Delaware limited liability company, its General Partner
					
		 		 		 	By:	 	Clarion Lion Properties Fund Holdings REIT, LLC, a Delaware limited liability company, its sole member
						
		 		 		 		 	By:	 	Clarion Lion Properties Fund, LLC, a Delaware limited liability company, its managing member
							
		 		 		 		 		 	By:	 	ING Clarion Partners, LLC, a New York limited liability company, its manager

  

																																			
												
		    		    		 		 		 		 		 		 	 By:
	 	 /s/ Charles Kemp
	 		 	
		    		    		 		 		 		 		 		 	 Name:
	 	Charles Kemp	 		 	
		    		    		 		 		 		 		 		 	 Title:
	 	Authorized Signatory	 		 	

  

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