Document:

EX-10.1

FIRST AMENDMENT TO LOAN DOCUMENTS

(SENIOR LOAN)

THIS FIRST AMENDMENT TO LOAN DOCUMENTS (this “Amendment”) is made and entered into as of this
28th day of December, 2009 by and among those entities identified on Schedule 1 attached
hereto and incorporated herein by this reference (collectively, “Borrower”), GRUBB & ELLIS REALTY
INVESTORS, LLC, a Virginia limited liability company, f/k/a TRIPLE NET PROPERTIES, LLC (“GERI”),
NNN REALTY ADVISORS, INC., a Delaware corporation (“NNN Realty Advisors”, and together with GERI,
collectively, the “Guarantors”) and BANK OF AMERICA, N.A., a national banking association,
successor by merger to LaSalle Bank National Association (“Lender”).

RECITALS:

WHEREAS, Lender previously made a $13,000,000.00 senior loan (the “Senior Loan”) to Borrower
as evidenced and secured by, among other things, (i) that certain Promissory Note dated as of
December 28, 2005 made by Borrower in favor of Lender (as amended, restated, modified or
supplemented, the “Senior Note”), (ii) that certain Deed of Trust, Security Agreement and Fixture
Filing made by Borrower in favor of Lender, dated as of December 28, 2005 and recorded on January
9, 2006 in the Real Property Records of Dallas County, Texas (the “Records”) as Instrument Number
200600008233, as amended by that certain First Modification to Deed of Trust, Security Agreement
and Fixture Filing made by Borrower in favor of Lender, dated as of October 16, 2006 and recorded
on November 7, 2006 in the Records as Instrument Number 200600413971 (as amended, restated,
modified or supplemented the “Senior Deed of Trust”), securing certain collateral described in
the Senior Deed of Trust, including, without limitation, the property commonly known as Executive
Center II and III, 8330-8360 LBJ Freeway, Dallas, Texas 75243 (the “Property”), which Property is
legally described on Exhibit A attached hereto and (iii) that certain Assignment of Leases
and Rents dated December 28, 2005 and recorded on January 9, 2006 in the Records as Instrument
Number 200600008234;

WHEREAS, the Senior Loan was further secured and evidenced by certain other Loan Documents (as
defined in the Senior Deed of Trust), including, without limitation, (i) that certain Guaranty of
Payment dated December 28, 2005 made by GERI in favor of Lender with respect to the Senior Loan (as
amended, restated, modified or supplemented, the “Senior GERI Guaranty”), (ii) that certain
Guaranty of Payment dated December 28, 2005 made by Anthony W. Thompson, an individual
(“Thompson”), in favor of Lender with respect to the Senior Loan (as amended, restated, modified or
supplemented, the “Senior Thompson Guaranty”), and (iii) that certain Guaranty (Securities Laws)
dated December 28, 2005 made by GERI in favor of Lender with respect to the Senior Loan (the
“Senior Securities Guaranty”); the Senior GERI Guaranty was later replaced by that certain Guaranty
of Payment dated as of February 26, 2009 made by NNN Realty Advisors in favor of Lender with
respect to the Senior Loan (as amended, restated, modified or supplemented, the “Senior NNN
Guaranty”); and

WHEREAS, subject to the terms of this Amendment, Borrower, Guarantors and Lender have agreed
to extend the Maturity Date (as defined in the Loan Documents).

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, Borrower, Guarantors and Lender do hereby agree as follows:

AGREEMENT:

1. Maturity Date. Subject to the terms and conditions contained in this Amendment,
the Maturity Date is hereby extended until January 31, 2010. The definition of “Maturity Date” in
the Loan Documents, and any and all references in the Loan Documents to the Maturity Date or the
maturity of the Senior Loan, shall be deemed to mean January 31, 2010.

2. Debt Service Coverage Ratio. Lender agrees to waive any failure by Borrower,
during the period of June 30, 2009 through January 31, 2010, to maintain the Minimum Debt Service
Coverage (as defined in the Senior Note) required by the Senior Note.

3. Reaffirmation of Senior Securities Guaranty. GERI hereby agrees that: (i) its
duties, liabilities, and obligations under the Senior Securities Guaranty are hereby reaffirmed and
shall not in any manner be discharged, impaired, or released by execution and delivery of this
Amendment or the Senior Deed of Trust Amendment (as hereinafter defined) (or any other amendment or
modification executed or delivered prior to the date hereof); and (ii) the Senior Securities
Guaranty is hereby reaffirmed and shall be and remain in full force and effect in accordance with
all of its terms.

4. Reaffirmation of Senior NNN Guaranty. NNN hereby agrees that: (i) its duties,
liabilities, and obligations under the Senior NNN Guaranty are hereby reaffirmed and shall not in
any manner be discharged, impaired, or released by execution and delivery of this Amendment or the
Senior Deed of Trust Amendment (or any other amendment or modification executed or delivered prior
to the date hereof); and (ii) the Senior NNN Guaranty is hereby reaffirmed and shall be and remain
in full force and effect in accordance with all of its terms. Notwithstanding anything to the
contrary set forth in the Senior NNN Guaranty, for the period of June 30, 2009 through January 31,
2010, Lender covenants and agrees to forbear from exercising any rights and remedies available to
Lender with respect to Section 16(a) of the Senior NNN Guaranty.

5. Lease Termination Fees. Notwithstanding anything to the contrary contained in the
Loan Documents, from and after the date of this Amendment, Borrower shall promptly deliver (or
cause to be delivered) to Lender any and all termination fees (collectively, “Lease Termination
Fees”) received by Borrower or any of its affiliates in connection with the termination of any
Leases (as defined in the Senior Deed of Trust), which Lease Termination Fees shall be applied
against, and reduce, the outstanding principal balance of the Senior Loan. Without limitation of
the foregoing, Borrower shall use reasonable efforts to cause all such Lease Termination Fees to be
payable to Lender.

6. Conditions. As a condition precedent to the effectiveness of this Amendment and
Lender’s obligations hereunder, each of the following conditions precedent shall have been
satisfied (as determined by Lender in its sole and absolute discretion) as of the effective date of
this Amendment:

6.1 Borrower shall have delivered to Lender the following items, each satisfactory in
form and substance to Lender, in its sole and absolute discretion, and each dated as of the
date hereof unless otherwise specified:

6.1.1 An original of this Amendment duly executed by Borrower and each
Guarantor;

6.1.2 An amendment to the Senior Deed of Trust (the “Senior Deed of Trust
Amendment”), executed and notarized by Borrower; and

6.1.3 Such other documents and instruments as Lender may reasonably request.

6.2 The Borrower shall have paid to Lender an extension and modification fee in the
amount of Twenty-Two Thousand and No/100 Dollars ($22,000.00) (the “Extension Fee”), which
Extension Fee shall be deemed fully earned, payable and non-refundable upon the execution
and delivery of this Amendment.

The parties hereby agree that this Amendment will not be binding upon or enforceable against
Lender until such time as each of the conditions precedent set forth above has been satisfied in
Lender’s sole and absolute determination.

7. Miscellaneous Costs. Borrower agrees to pay all reasonable legal and other
expenses incurred by Lender or otherwise in connection with this Amendment and the Senior Deed of
Trust Amendment and all other documents or instruments contemplated hereby or thereby. Borrower
also agrees to pay any mortgage, transfer, intangible or other such tax payable in connection with
this Amendment and/or the Senior Deed of Trust Amendment, and Borrower shall indemnify, defend and
hold Lender and its affiliates harmless from and against any and all losses, liabilities,
obligations, penalties, claims, fines, demands, litigation, defenses, costs, judgments, suits,
proceedings, damages, disbursements or expenses of any kind or nature whatsoever (including,
without limitation, attorneys’ fees and expenses), which may at any time be either directly or
indirectly imposed upon, incurred by or asserted or awarded against Lender or any of its affiliates
in connection with, arising from or relating to a failure by Borrower to timely pay any such
amounts. In the event Lender institutes legal proceedings in connection with this Amendment and
Lender is the prevailing party in such proceedings, Lender shall be entitled to recover from
Borrower the costs and expenses incurred in connection therewith, including, without limitation,
court costs and litigation expenses, including without limitation, deposition costs, witness fees,
transcript fees, and reasonable attorneys’ fees.

8. Amendments to Loan Documents. The parties hereto agree that:

8.1 The term “Maturity Date,” as used in the Loan Documents shall mean such Maturity Date, as
amended by this Amendment;

8.2 The term “Deed of Trust,” as used in any of the Loan Documents shall mean the Senior Deed
of Trust, as amended by this Amendment and the Senior Deed of Trust Amendment;

8.3 The term “Loan Documents” and each reference to each of such Loan Documents as used in the
Senior Note and any of such Loan Documents shall mean the Loan Documents (as defined in the Senior
Deed of Trust), as amended by this Amendment and the Senior Deed of Trust Amendment. This
Amendment and the Senior Deed of Trust Amendment shall be deemed “Loan Documents” for all purposes.

9. Ratification. Each of Borrower and each Guarantor hereby ratifies, acknowledges
and agrees that the Loan Documents (as modified hereby) represent valid, binding and enforceable
obligations of Borrower or Guarantor, as applicable. Each of Borrower and Guarantor respectively
represents and warrants that all of the representations and warranties of Borrower or Guarantor, as
applicable, set forth in this Amendment and the other Loan Documents (as modified hereby) are
complete and correct as of the date hereof. Each of Borrower and Guarantor hereby respectively
reaffirms to Lender each of the representations, warranties, covenants and agreements of Borrower
or Guarantor, as applicable, set forth in the Loan Documents (as modified by this Amendment) with
the same force and effect as if each were separately stated herein and made as of the date hereof.
Each of Borrower and Guarantor, respectively, further acknowledges, represents, warrants and agrees
that there are and they have no existing claims, defenses, personal or otherwise, or rights of
setoff whatsoever with respect to any of the Loan Documents. Each of Borrower and Guarantor hereby
respectively agrees that this Amendment and all of the Loan Documents, as applicable, are in full
force and effect, and nothing herein contained shall be construed as modifying in any manner any of
the Loan Documents, except as may specifically be set forth herein, and nothing contained herein
shall be deemed to constitute a waiver by Lender of any default under any of the Loan Documents,
except as expressly set forth herein, it being the express intention of all parties to this
Agreement to preserve Lender’s rights and remedies with respect to any such defaults, whether such
rights and remedies are available under the Loan Documents, at law or in equity. Each of Borrower
and Guarantor respectively agrees that no invalidity or unenforceability of any of the Loan
Documents shall affect the validity or enforceability of this Amendment. Notwithstanding anything
set forth herein to the contrary, neither Borrower nor Guarantors is making any representation or
warranty as to the representations or warranties made by Anthony W. Thompson in the Loan Documents
or otherwise reaffirming any of such representations or warranties.

10. Release of Lender; No Defenses. As additional consideration for Lender’s entering
into this Amendment, Borrower and each Guarantor hereby irrevocably releases, discharges and
acquits Lender, and each of its affiliates, agents, officers, directors, shareholders, attorneys
and employees, and their respective successors and/or assigns, of and from all rights, claims,
demands, obligations, liabilities, causes of action, breaches, damages, costs and expenses of any
kind whatsoever, whether known or unknown, suspected or unsuspected, liquidated or unliquidated,
whether heretofore or now existing, whether based on contract, tort, breach of any duty or any
other legal or equitable theory of recovery (collectively, the “Potential Claims”) arising on or
prior to the date hereof, including, without limitation, any claims that in any way arise out of,
are connected with or relate, in any way, to the Loan Documents, or the transactions contemplated
thereby. The Potential Claims described herein are not limited to matters known or disclosed.
Borrower and each Guarantor each acknowledges and agrees that as of the date hereof, it has no
defenses of any nature whatsoever to the enforcement of any or all of the Loan Documents, and that
it has no claims, counterclaims or offsets whatsoever against Lender in respect of the matters
described in the Loan Documents, or which could be asserted against Lender, by reason of any act,
conduct or omission of Lender, nor shall this Amendment give rise to any such defenses, claims,
counterclaims or offsets.

11. No Waiver of Rights Under Loan Documents. No delay or failure by Lender to
exercise any of its rights or remedies under any or all of the Loan Documents shall be deemed to
constitute, nor, except as specifically and expressly set forth in this Amendment, is it intended
to constitute, a waiver of any kind or nature with respect to any matter whatsoever under any or
all of the Loan Documents or a waiver of Lender’s rights to pursue any and all of its rights and
remedies under the Loan Documents at any time without further notice to the Borrower or any
Guarantor with respect to any matter whatsoever, including, without limitation, under the Thompson
Senior Guaranty and Thompson is expressly not released by this Amendment or any document executed
and delivered in connection herewith. Further, no failure by Lender to exercise, or delay by
Lender in exercising, any right, power or privilege under the Loan Documents or otherwise shall
operate as a waiver thereof, nor shall any single or partial exercise of any right, power or
privilege under the Loan Documents or otherwise preclude any other or future exercise thereof, or
the exercise of any other right, power or privilege, nor shall any provision of this Amendment be
deemed to amend, modify, supplement, extend, delay, renew, terminate, waive, release or otherwise
limit or prejudice Lender’s rights and remedies or the Borrower’s obligations under the Loan
Documents. Except as specifically and expressly set forth in this Amendment, Lender has not waived
any, and hereby expressly reserves all, rights and remedies of Lender, whether at law or in equity,
with respect to the Loan and the Loan Documents or any matter, event or circumstance relating
thereto.

12. Miscellaneous.

12.1 Assignment. This Amendment shall be binding upon and shall inure to the
benefit of the parties hereto, and their respective permitted successors, and assigns,
provided, however, that this Amendment may not be assigned by Borrower without the prior
express written consent of Lender.

12.2 Governing Law. This Amendment shall be construed under and interpreted in
accordance with and governed by the laws of the State of Illinois without regard to the
conflicts of law provisions thereof.

12.3 Complete Agreement. This Amendment replaces any prior oral agreement
between the parties, and any such prior oral agreement shall be of no force or effect. The
provisions of this Amendment may only be amended by a subsequent instrument in writing
clearly purporting to effect such amendment and signed by both parties.

12.4 Waiver. The failure of a party hereto to enforce, or the delay by a party
hereto to enforce, any of its rights under this Amendment shall not be deemed a continuing
waiver or a modification by such party of any of its rights under this Amendment and any
party may, within the time provided by the applicable law, commence appropriate proceedings
to enforce any or all of its rights under this Amendment and any prior failure to enforce or
delay in enforcement shall not constitute a defense.

12.5 Partial Invalidity. In the event that any provision of this Amendment
shall be found invalid or unenforceable, in whole or in part, by a court of competent
jurisdiction or an arbitration tribunal, such provision shall be limited to the minimum
extent necessary to render the same valid and enforceable, or shall be excised from this
Amendment, as circumstances may require, and this Amendment shall be construed as if said
provision had been incorporated herein as so limited, or as if said provision had not been
included herein, as the case may be, and enforced to the maximum extent permitted by law.

12.6 Construction. Whenever used in this Amendment, the singular shall be
construed to include the plural and vice versa, where applicable, and the use of the
masculine, feminine or neuter gender shall include the other genders. The subject matter
and language of this Amendment has been the subject of negotiations between the parties and
their respective counsel, and this Amendment has been jointly prepared by their respective
counsel. Accordingly, this Amendment shall not be construed against any party on the basis
that this Amendment was drafted by such party or its counsel. Headings of section and
subsections are for convenience of reference only, and shall not be construed as a part of
this Amendment, or as limiting or defining the scope of any term or provision hereof.

12.7 Time is of the Essence. It is expressly agreed by the parties hereto that
time is of the essence with respect to this Amendment.

12.8 Waiver of Jury Trial. BORROWER AND LENDER, HAVING BEEN REPRESENTED BY
COUNSEL, EACH KNOWINGLY AND VOLUNTARILY WAIVE ANY RIGHT TO A TRIAL BY JURY IN ANY ACTION OR
PROCEEDING TO ENFORCE OR DEFEND ANY RIGHTS, REGARDLESS OF WHETHER SUCH ACTION SOUNDS IN
CONTRACT, TORT OR OTHERWISE (a) UNDER THIS AMENDMENT OR ANY RELATED AGREEMENT OR UNDER ANY
AMENDMENT, INSTRUMENT, DOCUMENT OR AGREEMENT DELIVERED OR WHICH MAY IN THE FUTURE BE
DELIVERED IN CONNECTION WITH THIS AMENDMENT OR (b) ARISING FROM ANY BANKING RELATIONSHIP
EXISTING IN CONNECTION WITH THIS AMENDMENT, AND AGREE THAT ANY SUCH ACTION OR PROCEEDING
WILL BE TRIED BEFORE A COURT AND NOT BEFORE A JURY. BORROWER AGREES THAT IT WILL NOT ASSERT
ANY CLAIM AGAINST LENDER ON ANY THEORY OF LIABILITY FOR SPECIAL, INDIRECT, CONSEQUENTIAL,
INCIDENTAL OR PUNITIVE DAMAGES.

12.9 Counterparts. This Amendment may be executed in one or more counterparts,
and by each of the parties on separate counterparts, all of which, when taken together,
shall constitute one original agreement.

12.10 Incorporation of Recitals. The recitals set forth above are true and
correct and incorporated herein.

12.11 Signatures. This Amendment is fully binding on Borrower and each
Guarantor whose signature is indicated below, notwithstanding the fact that this Amendment
may have been signed by less than all of the obligors under the Loan Documents, and the fact
that not all of the obligors under the Loan Documents have signed this Amendment shall not
be used as a defense to enforcement of this Amendment or any other Loan Documents against
Borrower and each Guarantor.

12.12 Authority. Lender represents and warrants to Borrower that it is the
sole holder of the Senior Note, that Lender has full legal right, power and authority to
enter into and perform this Amendment, and that the officer, agent or other representative
executing this Amendment on behalf of Lender has the full right and authority to fully
commit and bind it to this Amendment. Borrower and each Guarantor represents that it has
full legal right, power and authority to enter into and perform this Amendment, and that the
officer, agent or other representative executing this Amendment on behalf of Borrower or
Guarantor, as the case may be, has the full right and authority to fully commit and bind it
to this Amendment.

12.13 Financing Statements. Lender shall have the right to file any amendments to
existing financing statements or any new financing statements that are necessary, in Lender’s
reasonable judgment, to perfect or continue the perfection of Lender’s security interest in the
Property.

[Signature Pages to Follow]

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

	 	 	 
	BORROWER:
	 	See Schedule 1 attached hereto and incorporated herein

by reference and made a part hereof

	 	 	 

	GERI:
	 	GRUBB & ELLIS REALTY INVESTORS, LLC, a Virginia limited

liability company, f/k/a TRIPLE NET PROPERTIES, LLC

By: /s/ Michael Rispoli

	 	 	 

	 	 	Name: Michael Rispoli

	 	 	 

	 	 	Its: Chief Financial Officer

	 
	 	 

	NNN REALTY ADVISORS:
	 	NNN REALTY ADVISORS, INC., a Delaware corporation

By: /s/ Michael Rispoli

	 	 	 

	 	 	Name: Michael Rispoli

	 	 	 

	 	 	Its: Chief Financial Officer

	 
	 	 

	LENDER:
	 	BANK OF AMERICA, N.A., a national banking association,

successor by merger to LaSalle Bank National Association

By: /s/ Christopher A. Thangaraj

	 	 	 

	 	 	Name: Christopher A. Thangaraj

	 	 	 

	 	 	Its: Vice President

	 
	 	 

SCHEDULE 1

Borrower Signatures

	 	 	 
	BORROWER:
	 	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

	 	 	 

	 	 	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

	 	 	 

1

2

	 	 	 
	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

3

	 	 	 
	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

4

	 	 	 
	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

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

5EX-10.2

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 DEED OF TRUST, SECURITY AGREEMENT AND FIXTURE FILING

This Second Modification to 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 200600008233, as amended by that certain First Modification to 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 200600413971 (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 $13,000,000.00
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

	 	 	 

1

2

	 	 	 
	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

4

	 	 	 
	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

5

	 	 	 
	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]

6

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