Document:

EX-10.2

FIRST AMENDMENT TO AGREEMENT FOR

PURCHASE AND SALE OF REAL

PROPERTY AND ESCROW INSTRUCTIONS

THIS FIRST AMENDMENT TO PURCHASE AND SALE OF REAL

PROPERTY AND ESCROW INSTRUCTIONS (this “Amendment”) is made and entered into as of the
9th day of April 2007, by and between Commons V Investment Partnership, a Florida
general partnership (“Seller”), and Triple Net Properties, LLC, a Virginia limited liability
company (“Buyer”).

RECITALS

A. Seller and Buyer are parties to that certain Agreement for Purchase and Sale of Real
Property and Escrow Instructions, dated as of March 16, 2007 (“Agreement”), regarding the real
property commonly known as Commons V Medical Office Building, located in Naples, Florida together
with improvements thereon and certain other property as set forth in the Agreement (collectively,
the “Property”).

B. Seller and Buyer desire to amend the Agreement as provided in this Amendment.

NOW THEREFORE, in consideration of the promises, terms and conditions contained herein and
such other good and valuable consideration, the receipt and adequacy of which are hereby
acknowledged, Buyer and Seller hereby agree that the Agreement is hereby amended as follows:

1. Due Diligence. The Due Diligence Period is expired as of the date of this
Amendment.

2. Closing Date. The Close of Escrow shall occur on April 24, 2007; provided, however,
that Buyer shall have a one-time right to extend the Close of Escrow up to five (5) business days
by providing notice on or prior to April 19, 2007. In addition, Seller shall have until two (2)
business days before the Close of Escrow in order to provide the estimated Closing Statement to
Buyer, amending the timeframe set forth in 6.7.2 of the Contract.

3. Counterparts; Facsimile Signatures; Ratification. This Amendment may be signed in
counterparts, each of which shall be an original, but all of which shall constitute one agreement.
This Amendment may be delivered by facsimile, and such facsimile counterparts shall be valid and
binding on the parties with the same effect as if original signatures had been exchanged. Except
as provided for in this Amendment, the Agreement remains in full force and effect unchanged and
unaffected, and Seller and Buyer hereby ratify and confirm the same.

[SIGNATURES TO FOLLOW]

1

IN WITNESS WHEREOF, Buyer and Seller have executed this First Amendment on the date first
above written.

	 	 	 
	SELLER:

	 	Commons V Investment Partnership,

a Florida general partnership
	 
	 	 
	
 
	 	By:/s/ Jerry F. Nichols
	
 
	 	 
	
 
	 	Jerry F. Nichols, Managing Partner
	
 
	 	By:Ribek Corporation,

a Delaware corporation and Managing Partner

for above partnership
	 
	 	 
	
 
	 	By:/s/ Edward J. Mace
	
 
	 	 
	
 
	 	Edward J. Mace, Vice President
	
 
	 	By:Manatee Building Partnership,

a Florida general partnership, and Managing

Partner for above partnership
	 
	 	 
	
 
	 	By:/s/ George W. Ferguson
	
 
	 	 
	
 
	 	George W. Ferguson, Managing Partner
	 
	 	 

2

	 	 	 
	 
	 	 
	BUYER:

	 	Triple Net Properties, LLC,

a Virginia limited liability company

By: /s/ Jack Maurer

Name: Jack Maurer

Its: Executive Vice President

#1235379 v2 021255.04889

3EX-10.3

ASSIGNMENT OF CONTRACT

THIS ASSIGNMENT OF CONTRACT (the “Assignment”) is made as of the 19th day of April
2007 by Triple Net Properties, LLC, a Virginia limited liability company (“Assignor”) to NNN
Healthcare/Office REIT Commons V, LLC, a Delaware limited liability company (“Assignee”).

RECITALS

Assignor and Commons V Investment Partnership, a Florida general partnership entered into that
certain Agreement for Purchase and Sale of Real Property and Escrow Instructions, dated as of March
16, 2007 (the “Contract”) with respect to certain property known as Commons V Medical Office
Building, located in Naples, Florida, as more particularly described in the Contract. Assignor
desires to assign all of its rights, title and interest in and to the Contract to Assignee.

AGREEMENT

FOR and in consideration of the premises and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Assignor hereby assigns all of its
rights, title and interest in and to the Contract to Assignee.

Assignee by its execution of this Assignment hereby assumes all of Assignor’s obligations
under the Contract.

WITNESS the following signatures:

	 	 	 	 	 	 	 
	ASSIGNOR:	 	Triple Net Properties, LLC,
	 	 
	 
	 	 	 	 	 	 
	 	 	a Virginia limited liability company
	 	 
	 
	 	 	 	 	 	 
	
 
	 	By:
	 	/s/ Richard Hutton
	 	

	 
	 	 	 	 	 	 
	 	 	 	 	 

	 
	 	 	 	 	 	 
	
 
	 	Name:
	 	Richard Hutton
	 	

	
 
	 	 
	 	 
	 	 
	 
	 	 	 	 	 	 
	
 
	 	Title:
	 	Executive Vice President
	 	

	 
	 	 	 	 	 	 
	 	 	 	 	 

	 
	 	 	 	 	 	 
	ASSIGNEE:	 	NNN Healthcare/Office REIT Commons V, LLC,
	 	 
	 
	 	 	 	 	 	 
	 	 	a Delaware limited liability company
	 	 
	 
	 	 	 	 	 	 
	
 
	 	By:
	 	Triple Net Properties, LLC,
	 	

	 
	 	 	 	 	 	 
	 	 	 	 	a Virginia limited liability company

	 
	 	 	 	 	 	 
	
 
	 	Its:
	 	Manager
	 	

	 
	 	 	 	 	 	 
	
 
	 	 	 	By:
	 	/s/ Richard Hutton
	
 
	 	 	 	 
	 	 
	 
	 	 	 	 	 	 
	
 
	 	 	 	Name:
	 	Richard Hutton
	
 
	 	 	 	 
	 	 
	 
	 	 	 	 	 	 
	
 
	 	 	 	Title:
	 	Executive Vice PresidentEX-10.4

Assignment and Assumption Agreement

This Assignment and Assumption Agreement (the “Assignment”) is made on April 24, 2007, by and
between COMMONS V INVESTMENT PARTNERSHIP, a Florida general partnership (the “Assignor”), in favor
of NNN HEALTHCARE/OFFICE REIT COMMONS V, LLC, a Delaware limited liability company (“Assignee”).

For good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, Assignor hereby grants, conveys, transfers and assigns to Assignee all of Assignor’s
rights, title and interest in, to and under any and all of the following to the extent they are
related to that certain real property located in the County of Collier, Florida, commonly known as
Commons V Medical Office Building and more particularly described in Exhibit A attached
hereto (the “Real Property”):

a. all leases (the “Leases”), including associated amendments, with all persons leasing the
Real Property or any part thereof, except for certain payments for tenant improvements previously
advanced by Assignor, as set forth on Exhibit B, together with all security deposits, other
deposits held in connection with the Leases, Lease guarantees and other similar credit enhancements
providing additional security for the Leases;

b. all tangible and intangible personal property owned by Seller located on and used in
connection with the Real Property, including, specifically, without limitation, equipment,
furniture, tools and supplies, any website maintained by Assignor, and all related intangibles
including Seller’s interest in the name “Commons V Medical Office Building”;

c. all service contracts, agreements, warranties and guaranties relating to the operation, use
or maintenance of the Real Property (the “Contracts”); and

d. to the extent transferable, all building permits, certificates of occupancy and other
certificates, permits, licenses and approvals relating to the Real Property.

Assignor hereby agrees to indemnify, protect, defend and hold Assignee harmless from and
against any and all claims, demands, liabilities, losses, costs, damages or expenses (including,
without limitation, reasonable attorneys’ fees and costs) arising out of or resulting from any
breach or default by Assignor under the terms of the Leases and the Contracts arising prior to the
date hereof.

Assignor hereby covenants that it will, at any time and from time to time upon written request
therefor, at Assignee’s sole expense and without the assumption of any additional liability
thereby, execute and deliver to Assignee, its successors and assigns, any new or confirmatory
instruments and take such further acts as Assignee may reasonably request to fully evidence the
assignment contained herein and to enable Assignee, its successors and assigns to fully realize and
enjoy the rights and interests assigned hereby.

Assignee hereby accepts the foregoing assignment and agrees to assume, pay, perform and
discharge, as and when due, all of the agreements and obligations of Assignor under the Leases and
Contracts and agrees to be bound by all of the terms and conditions of the Leases and the
Contracts.

Assignee hereby agrees to indemnify, protect, defend and hold Assignor harmless from and
against and any all claims, demands, liabilities, losses, costs, damages or expenses (including,
without limitation, reasonable attorneys’ fees and costs) arising out of or resulting from any
breach or default by Assignee under the terms of the Leases and Contracts arising on or after the
date hereof.

The provisions of this Assignment shall be binding upon, and shall inure to the benefit of,
the successors and assigns of Assignor and Assignee, respectively.

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.

IN WITNESS WHEREOF, Assignor and Assignee have caused their duly authorized representatives to
execute this Assignment as of the date first above written.

	 	 	 	ASSIGNOR: Commons V Investment Partnership,

a Florida general partnership

By: /s/ Jerry F. Nichols

	 	 	Jerry F. Nichols, Its Managing Partner

By: Ribek Company, a Florida general partnership
and Managing Partner for the above partnership

By: Ribek Corporation, a Delaware Corporation

and Managing Partner for Ribek Company

By: /s/ Edward J. Mace

Edward J. Mace, Its Vice President

By: Manatee Building Partnership, a Florida
general partnership and Managing Partner for the
above partnership

By: /s/ George W. Ferguson

	 	 	George W. Ferguson, Its Managing Partner

Date: April 23, 2007

	 	 	 	ASSIGNEE: NNN Healthcare/Office REIT Commons V, LLC, a Delaware limited liability company

By: Triple Net Properties, LLC, a Virginia
limited liability company, its Manager

By: /s/Richard Hutton

Name: Richard Hutton

Title: Executive Vice President

Date: April 20, 2007

Exhibits to Assignment and Assumption Agreement:

Exhibit A — Legal Description of Real Property

Exhibit B — Excluded Payments

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