This document was prepared by:

Barack Ferrazzano Kirschbaum & Nagelberg
200 W. Madison Street, Suite 3900
Chicago, Illinois 60606
Attn: Katherine S. Sprenger

SECOND MODIFICATION TO JUNIOR DEED OF TRUST, SECURITY AGREEMENT AND FIXTURE
FILING

This Second Modification to Junior Deed of Trust, Security Agreement and Fixture
Filing (this “Deed of Trust Amendment”) is made and entered into as of the 28th
day of December, 2009 by and between those entities listed on Schedule I
attached hereto (collectively, “Grantor”), whose address is 1551 N. Tustin
Avenue, Suite 200, Santa Ana, California 92705, and BANK OF AMERICA, N.A., a
national banking association, successor by merger to LaSalle Bank National
Association, its successors and assigns (“Beneficiary”), whose address is 135
South LaSalle Street, Chicago, Illinois 60603.

RECITALS

WHEREAS, Grantor, by that certain Deed of Trust, Security Agreement and Fixture
Filing dated as of December 28, 2005 to J. Michael Pruitt, as trustee, for the
benefit of Beneficiary, which was recorded on January 9, 2006 in the Official
Public Records of Real Property of Dallas County, Texas (the “Records”) as
Document 200600008235, as amended by that certain First Modification to Junior
Deed of Trust, Security Agreement and Fixture Filing made by Borrower in favor
of Lender, dated October 16, 2006, recorded on November 7, 2006 in the Records
as Instrument Number 200600413972 (as amended, restated, modified or supplement,
the “Deed of Trust”), granted, sold, conveyed, mortgaged, pledged and assigned
unto Beneficiary certain real property located in Dallas County, Texas, which is
more particularly described on Exhibit A attached hereto, which Deed of Trust
secures Grantor’s obligations under a certain loan (the “Loan”) in the original
principal amount of $3,000,000.00 made by Beneficiary to Grantor;

WHEREAS, Grantor and Beneficiary have agreed to extend the Maturity Date (as
defined in the Deed of Trust) to January 31, 2010 pursuant to the terms of that
certain First Amendment to Loan Documents by and between Grantor, Grubb & Ellis
Realty Investors, LLC, a Virginia limited liability company, NNN Realty
Advisors, Inc., a Delaware corporation, and Lender (the “First Amendment”);

NOW THEREFORE, for and in consideration of the recitals set forth above and made
a part hereof, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the undersigned do hereby agree as
follows:

1. Pursuant to the First Amendment, the maturity date of the Loan is being
extended from December 28, 2009 to January 31, 2010. Any and all references in
the Deed of Trust to the “Maturity Date,” including, without limitation, the
definition in the Defined Terms, shall mean January 31, 2010. Any and all
references to the “Extended Maturity Date” are hereby deleted.

2. Except as expressly modified and amended hereby, the Deed of Trust shall
continue in full force and effect and, as thus modified and amended, is hereby
ratified, confirmed and approved.

[THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]

IN WITNESS WHEREOF, the parties have caused this Deed of Trust Amendment to be
executed as of the day and year first above written.

Grantor Signatures

      GRANTOR:  
NNN Executive Center, LLC, a Delaware limited liability company
By: Grubb & Ellis Realty Investors, LLC,
a Virginia limited liability company, f/k/a
Triple Net Properties, LLC
Its: Manager
By: /s/ Michael Rispoli _
   
 
   
Name: Michael Rispoli
   
 
   
Its: Chief Financial Officer
   
 
   
NNN Executive Center 1, LLC, a Delaware limited liability company
By: Grubb & Ellis Realty Investors, LLC,
a Virginia limited liability company, f/k/a
Triple Net Properties, LLC,
Its: Vice President
By: /s/ Michael Rispoli _
   
 
   
Name: Michael Rispoli
   
 
   
Its: Chief Financial Officer
   
 
   
NNN Executive Center 2, LLC, a Delaware limited liability company
By: Grubb & Ellis Realty Investors, LLC,
a Virginia limited liability company, f/k/a
Triple Net Properties, LLC,
Its: Vice President
By: /s/ Michael Rispoli _
   
 
   
Name: Michael Rispoli
   
 
   
Its: Chief Financial Officer
   
 

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      NNN Executive Center 3, LLC, a Delaware limited liability company By:
Grubb & Ellis Realty Investors, LLC, a Virginia limited liability company, f/k/a
Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael Rispoli _
Name: Michael Rispoli Its: Chief Financial Officer NNN Executive Center 4, LLC,
a Delaware limited liability company By: Grubb & Ellis Realty Investors, LLC, a
Virginia limited liability company, f/k/a Triple Net Properties, LLC, Its:  
Vice President By: /s/ Michael Rispoli _ Name: Michael Rispoli Its: Chief
Financial Officer NNN Executive Center 5, LLC, a Delaware limited liability
company By: Grubb & Ellis Realty Investors, LLC, a Virginia limited liability
company, f/k/a Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael
Rispoli _ Name: Michael Rispoli Its: Chief Financial Officer

3

      NNN Executive Center 6, LLC, a Delaware limited liability company By:
Grubb & Ellis Realty Investors, LLC, a Virginia limited liability company, f/k/a
Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael Rispoli _
Name: Michael Rispoli Its: Chief Financial Officer NNN Executive Center 7, LLC,
a Delaware limited liability company By: Grubb & Ellis Realty Investors, LLC, a
Virginia limited liability company, f/k/a Triple Net Properties, LLC, Its:  
Vice President By: /s/ Michael Rispoli _ Name: Michael Rispoli Its: Chief
Financial Officer NNN Executive Center 8, LLC, a Delaware limited liability
company By: Grubb & Ellis Realty Investors, LLC, a Virginia limited liability
company, f/k/a Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael
Rispoli _ Name: Michael Rispoli Its: Chief Financial Officer

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      NNN Executive Center 9, LLC, a Delaware limited liability company By:
Grubb & Ellis Realty Investors, LLC, a Virginia limited liability company, f/k/a
Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael Rispoli _
Name: Michael Rispoli Its: Chief Financial Officer NNN Executive Center 10, LLC,
a Delaware limited liability company By: Grubb & Ellis Realty Investors, LLC, a
Virginia limited liability company, f/k/a Triple Net Properties, LLC, Its:  
Vice President By: /s/ Michael Rispoli _ Name: Michael Rispoli Its: Chief
Financial Officer NNN Executive Center 11, LLC, a Delaware limited liability
company By: Grubb & Ellis Realty Investors, LLC, a Virginia limited liability
company, f/k/a Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael
Rispoli _ Name: Michael Rispoli Its: Chief Financial Officer

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      NNN Executive Center 12, LLC, a Delaware limited liability company By:
Grubb & Ellis Realty Investors, LLC, a Virginia limited liability company, f/k/a
Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael Rispoli _
Name: Michael Rispoli Its: Chief Financial Officer NNN Executive Center 13, LLC,
a Delaware limited liability company By: Grubb & Ellis Realty Investors, LLC, a
Virginia limited liability company, f/k/a Triple Net Properties, LLC, Its:  
Vice President By: /s/ Michael Rispoli _ Name: Michael Rispoli Its: Chief
Financial Officer NNN Executive Center 15, LLC, a Delaware limited liability
company By: Grubb & Ellis Realty Investors, LLC, a Virginia limited liability
company, f/k/a Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael
Rispoli _ Name: Michael Rispoli Its: Chief Financial Officer

      NNN Executive Center 16, LLC, a Delaware limited liability company By:
Grubb & Ellis Realty Investors, LLC, a Virginia limited liability company, f/k/a
Triple Net Properties, LLC, Its:   Vice President By: /s/ Michael Rispoli _
Name: Michael Rispoli Its: Chief Financial Officer NNN Executive Center II and
III 2003, LP, a Texas limited partnership By: NNN Executive Center II and III
GP, LLC, a Delaware limited liability company, its sole general partner By:
Grubb & Ellis Realty Investors, LLC, a Virginia limited liability company, f/k/a
Triple Net Properties, LLC Its:   Manager By: /s/ Michael Rispoli _ Name:
Michael Rispoli Its: Chief Financial Officer

         
STATE OF CALIFORNIA
COUNTY OF ORANGE
  )
)  
) SS.

On December 28, 2009 before me, Rex Morishita, Notary Public, personally
appeared Michael Rispoli, who proved to me on the basis of satisfactory evidence
to be the person(s) whose name(s) are subscribed to the within instrument and
acknowledged to me that he executed the same in his authorized capacity(ies),
and that by his signature(s) on the instrument the person(s), or the entity upon
behalf of which the person(s) acted, executed the instrument.

I certify under PENALTY OF PERJURY under the laws of the State of California
that the foregoing paragraph is true.

WITNESS my hand and official seal.

      Signature /s/ Rex Morishita (Seal)
My Commission Expires: May 1, 2011  
[REX MORISHITA
Commission # 1736815
Notary Public – California
Orange County
My Comm. Expires May 1, 2011]

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