Exhibit 10.1



                           PURCHASE AND SALE AGREEMENT



                                BETWEEN AND AMONG


                       WELLS OPERATING PARTNERSHIP, L.P.,
                WELLS FUND XII - REIT JOINT VENTURE PARTNERSHIP,
                WELLS FUND XIII - REIT JOINT VENTURE PARTNERSHIP,
                             WELLS REIT, LLC - VA I,
                               WELLS BREA I, L.P.,
                              WESTLAKE WELLS, L.P.,
                          DANACQ FARMINGTON HILLS LLC,
                              DANACQ KALAMAZOO LLC,
                          WELLS - EDS DES MOINES, L.P.,
                                       AND
                 THE WELLS FUND XI-FUND XII-REIT JOINT VENTURE,

                                   AS SELLERS


                                       AND


                      LEXINGTON CORPORATE PROPERTIES TRUST,

                                  AS PURCHASER






                                February 25, 2005



Purchase and Sale Agreement









                                                 TABLE OF CONTENTS
                                                                                                       

ARTICLE 1. DEFINITIONS............................................................................................3


ARTICLE 2. PURCHASE AND SALE.....................................................................................40
         2.1.     Agreement to Sell and Purchase the Wells Affiliate Properties..................................40
         2.2.     Agreement to Sell and Purchase the Wells OP Properties.........................................41
         2.3.     Permitted Exceptions...........................................................................41
         2.4.     Earnest Money..................................................................................41
         2.5.     Purchase Price.................................................................................42
         2.6.     Independent Contract Consideration.............................................................42
         2.7.     Closing........................................................................................42


ARTICLE 3. PURCHASER'S INSPECTION AND REVIEW RIGHTS..............................................................44
         3.1.     Due Diligence Inspections......................................................................44
         3.2.     Deliveries to Purchaser by Sellers; Purchaser's Access to Property Records of Sellers..........45
         3.3.     Condition of the Properties....................................................................48
         3.4.     Title and Survey...............................................................................49
         3.5.     Service Contracts..............................................................................50
         3.6.     Confidentiality................................................................................50


ARTICLE 4. REPRESENTATIONS, WARRANTIES AND OTHER AGREEMENTS......................................................51
         4.1.     Representations and Warranties of Seller.......................................................51
         4.2.     Knowledge Defined..............................................................................59
         4.3.     Covenants and Agreements of Sellers............................................................59
         4.4.     Representations and Warranties of Purchaser....................................................66
         4.5      Covenants and Agreements of Purchaser..........................................................67


ARTICLE 5. CLOSING DELIVERIES, CLOSING COSTS AND PRORATIONS......................................................68
         5.1.     Sellers' Closing Deliveries....................................................................68
         5.2.     Purchaser's Closing Deliveries.................................................................74
         5.3.     Closing Costs..................................................................................76
         5.4.     Prorations and Credits.........................................................................77


ARTICLE 6. CONDITIONS TO CLOSING.................................................................................80
         6.1.     Conditions Precedent to Purchaser's Obligations................................................80
         6.2.     Conditions Precedent to Seller's Obligations...................................................84
         6.3.     Conditions Precedent to Purchase and Sale of Certain Properties................................85



Purchase and Sale Agreement








                                                                                                       

ARTICLE  7. CASUALTY AND CONDEMNATION............................................................................85
         7.1.     Casualty.......................................................................................85
         7.2.     Condemnation...................................................................................86


ARTICLE  8. DEFAULT AND REMEDIES.................................................................................87
         8.1.     Purchaser's Default............................................................................87
         8.2.     Seller's Default...............................................................................88


ARTICLE 9. ASSIGNMENT............................................................................................88
         9.1.     Assignment.....................................................................................88


ARTICLE 10.  BROKERAGE COMMISSIONS...............................................................................89
         10.1.    Broker.........................................................................................89


ARTICLE 11. INDEMNIFICATION......................................................................................90
         11.1.    Indemnification by Sellers.....................................................................90
         11.2.    Indemnification by Purchaser...................................................................90
         11.3.    Limitations on Indemnification.................................................................91
         11.4.    Survival.......................................................................................91
         11.5.    Indemnification as Sole Remedy.................................................................91


ARTICLE 12. MISCELLANEOUS........................................................................................92
         12.1.    Notices........................................................................................92
         12.2     Possession.....................................................................................93
         12.3     Time Periods...................................................................................93
         12.4     Publicity......................................................................................93
         12.5     Discharge of Obligations.......................................................................93
         12.6     Severability...................................................................................93
         12.7     Construction...................................................................................94
         12.8     Sale Notification Letters......................................................................94
         12.9     Access to Records Following Closing............................................................94
         12.10    Submission to Jurisdiction.....................................................................94
         12.11    General Provisions.............................................................................95
         12.12    Like-Kind Exchange by Sellers..................................................................95
         12.13    Attorney's Fees................................................................................96
         12.14    Counterparts...................................................................................96
         12.15    Effective Agreement............................................................................96


                                                        ii



Purchase and Sale Agreement





                              SCHEDULE OF EXHIBITS


Exhibit "A-1"   Description of Wells OP Lands

Exhibit "A-2"   Description of Wells Affiliate Lands

Exhibit "A-3"   Description of Wells OP Leasehold Interest Lands

Exhibit "B"     List of Personal Property

Exhibit "B-1"   List of Property Excluded from Wells OP Personal Property

Exhibit "B-2"   List of Property Excluded from Wells Affiliate Personal Property

Exhibit "C"     List of Existing Commission Agreements

Exhibit "D"     List of Associations and Declarations of Covenants, Conditions,
                Easements and Restrictions

Exhibit "E"     Form of Escrow Agreement

Exhibit "F"     List of Existing Environmental Reports

Exhibit "G"     List of Existing Surveys

Exhibit "H"     Forms of Ground Lessor Estoppel Certificates

Exhibit "I"     List of Leases

Exhibit "J"     List of Letters of Credit

Exhibit "K-1"   Title Exceptions for Wells OP Lands

Exhibit "K-2"   Title Exceptions for Wells Affiliate Lands

Exhibit "K-3"   Title Exceptions for Wells OP Leasehold Interest Lands

Exhibit "L"     List of Service Contracts

Exhibit "M"     Form of Tenant Estoppel Certificate

Exhibit "N"     Allocation of Earnest Money to Properties

Exhibit "O"     List of Purchase Prices for Each Property


                              Schedule of Exhibits

Purchase and Sale Agreement          Page 1





Exhibit "P"     List of Exceptions

Exhibit "Q"     List of Third Party Management Agreements

Exhibit "R"     Property Tax Appeals

Exhibit "S"     List of Knowledge Parties

Exhibit "T"     Form of Lease Guarantor Estoppel Certificate

Exhibit "U"     Obligations as to Certain Leasing Commission Obligations

Exhibit "V"     List of Additional Matters for Confirmation in Estoppel
                Certificates

Exhibit "W"     Excluded Computer Software

Exhibit "X"     List of Security Deposits

Exhibit "Y"     Form of Highwoods Estoppel Certificate

Exhibit "Z"     Form of Pending Kerr McGee Sewer Easement

Exhibit "AA"    Form of Pending Capital One Lake Easement Deed

Exhibit "BB"    Intentionally Deleted

Exhibit "CC"    Form of Second Amendment to Gartner Office Lease

Exhibit "DD"    Form of Letter Amendment to ISS Building III Lease

Exhibit "EE"    Alstom Power Property / French Drain Work

Exhibit "FF"    Gartner Parking Plans


                              Schedule of Exhibits

Purchase and Sale Agreement          Page 2





                          SCHEDULE OF CLOSING DOCUMENTS


Schedule 1      Form of Assignment and Assumption of ASML Sub-Ground Lease

Schedule 2      Form of Assignment and Assumption of Ingram Micro Bond Lease

Schedule 3      Form of Assignment and Assumption of ISS Bond Lease

Schedule 4      Form of Assignment and Assumption of Leases and Security
                Deposits and Leasing Commission Obligations arising after
                Closing

Schedule 5      Form of Assignment and Assumption of ASML Sublease

Schedule 6      Form of Assignment and Assumption of Ingram Micro Sublease

Schedule 7      Form of Assignment and Assumption of ISS Subleases

Schedule 8      Form of Bill of Sale to Personal Property

Schedule 9      Form of Assignment and Assumption of Ingram Micro Loan Documents

Schedule 10     Form of Assignment and Assumption of ISS Bond Documents

Schedule 11     Form of Assignment and Assumption of Service Contracts

Schedule 12     Form of General Assignment of Seller's Interest in Intangible
                Property

Schedule 13     Form of Seller's Affidavit (for Purchaser's Title Insurance
                Purposes)

Schedule 14     Form of Seller's Certificate (as to Seller's Representations and
                Warranties)

Schedule 15     Form of Seller's FIRPTA Affidavit

Schedule 16     Form of Ingram Micro Bond Certificate

Schedule 17     Form of ISS Home Office Payment Agreement

Schedule 18     Form of Assignment and Assumption of Agreements Regarding ISS
                Letters of Credit

Schedule 19     Form of Assignment of Letters of Credit

Schedule 20     Forms of Seller's Estoppels

Schedule 21     Form of Assignment and Assumption of Highwoods Rental Guaranty


Purchase and Sale Agreement





                Agreements

Schedule 22     Form of Assignment and Assumption of Pacificare Escrow Agreement

Schedule 23     Form of Purchaser's Certificate (as to Purchaser's
                Representations and Warranties)


                          Schedule of Closing Documents

Purchase and Sale Agreement          Page 2





                           PURCHASE AND SALE AGREEMENT



- --------------------------------------------------------------------------------

         THIS  PURCHASE AND SALE AGREEMENT (the  "Agreement"),  made and entered
into this 25th day of February,  2005, by and among WELLS OPERATING PARTNERSHIP,
L.P., a Delaware limited  partnership  ("Wells OP"), WELLS FUND XII - REIT JOINT
VENTURE PARTNERSHIP, a Georgia general partnership having Wells Real Estate Fund
XII,  L.P.,  a Georgia  limited  partnership  and Wells OP as all of its general
partners  ("Wells  Fund XII - REIT JV"),  WELLS  FUND XIII - REIT JOINT  VENTURE
PARTNERSHIP,  a Georgia general  partnership having Wells Real Estate Fund XIII,
L.P., a Georgia limited  partnership and Wells OP as all of its general partners
("Wells Fund XIII-REIT JV"), WELLS REIT, LLC, VA I, a Georgia limited  liability
company having Wells OP as its sole member ("Wells Virginia  REIT"),  WELLS BREA
I, L.P.,  a Delaware  limited  partnership  having  Wells Brea,  LLC, a Delaware
limited liability  company as its sole general partner ("Wells Brea"),  WESTLAKE
WELLS, L.P., a Texas limited partnership having Wells Real Estate Westlake,  TX,
LLC, a Delaware  limited  liability  company as its sole general partner ("Wells
Westlake"),  DANACQ FARMINGTON HILLS LLC, a Delaware limited liability  company,
having Wells OP as its sole member ("Wells Farmington Hills"),  DANACQ KALAMAZOO
LLC, a Delaware  limited  liability  company  having Wells OP as its sole member
("Wells  Kalamazoo"),  WELLS - EDS DES MOINES, L.P., a Texas limited partnership
having  Wells Real Estate - Des Moines,  IA, LLC, a Delaware  limited  liability
company as its sole general partner ("Wells EDS"),  THE WELLS FUND XI - FUND XII
- - REIT JOINT VENTURE,  a Georgia  general  partnership  having Wells Real Estate
Fund XI, L.P., a Georgia limited partnership,  Wells Real Estate Fund XII, L.P.,
a  Georgia  limited  partnership  and  Wells OP as all of its  general  partners
("Wells  Funds XI and XII REIT JV") (Wells OP,  Wells Fund XII - REIT JV,  Wells
Fund XIII - REIT JV, Wells  Virginia REIT,  Wells Brea,  Wells  Westlake,  Wells
Farmington Hills, Wells Kalamazoo, Wells EDS, and Wells Funds XI and XII REIT JV
being collectively referred to as "Sellers" and sometimes  individually referred
to as "Seller") and LEXINGTON  CORPORATE  PROPERTIES TRUST, a Maryland statutory
real  estate  investment  trust  (together  with its  permitted  successors  and
assigns, "Purchaser").

                              W I T N E S S E T H:
                               -------------------

         WHEREAS,  Wells OP (doing  business  in the State of North  Carolina as
Wells Operating Partnership, Limited Partnership) desires to sell its fee simple
estate in  certain  improved  real  property  defined  herein  as the  "Allstate
Property" located in Decatur Township,  Marion County,  Indiana;  the "AT&T (PA)
Property" located in Susquehanna  Township,  Dauphin County,  Pennsylvania;  the
"Capital One  Property"  located in the Three Chopt  District,  Henrico  County,
Virginia;  the "Dial  Corporation  Property" located at 15501 N. Dial Boulevard,
Scottsdale,  Maricopa County,  Arizona;  the "Experian  Property" located in the
City of Allen,  Collin County,  Texas;  the "Gartner  Surface Parking  Property"
located in Fort Myers, Lee County,  Florida;  the "IKON Property" located at 810
and 820 Gears Road,  Harris County,  Texas; the "Kerr McGee Property" located in
Harris County,  Texas;  the "Kraft Foods  Property"  located in Forsyth  County,
Georgia;  the "Lucent  Property"  located in Wake County,  North  Carolina;  the
"Metris


Purchase and Sale Agreement





Property"  located in the City of Tulsa,  Tulsa  County,  Oklahoma;  the "Nissan
Property" located in the City of Irving,  Dallas County,  Texas; the "Pacificare
Property"  located  in the  City  of  San  Antonio,  Bexar  County,  Texas;  the
"Transocean  Property"  located  in Harris  County,  Texas;  and the  "Travelers
Express Property" located in Jefferson County,  Colorado,  together with certain
related personal and intangible property, and Purchaser desires to purchase such
real, personal and intangible property; and

         WHEREAS, Wells OP also desires to sell its leasehold estates in certain
improved real property and associated  improvements  defined herein as the "ASML
Property"  located in Maricopa  County,  Arizona;  the "Ingram  Micro  Property"
located in Millington,  Tennessee; and the "ISS Property" located in the City of
Atlanta,  Fulton County,  Georgia,  together with certain  related  personal and
intangible  property,  and Purchaser desires to purchase such real, personal and
intangible property; and

         WHEREAS, Wells Fund XII - REIT JV desires to sell its fee simple estate
in certain  improved real property  defined  herein as the "AT&T (OK)  Property"
located in Oklahoma County, Oklahoma, together with certain related personal and
intangible  property,  and Purchaser desires to purchase such real, personal and
intangible property; and

         WHEREAS, Wells Fund XIII - REIT JV desires to sell its fee simple state
in certain improved real property  defined herein as the "Americredit  Property"
located  in Clay  County,  Florida,  and the "John  Wiley  Property"  located in
Delaware  Township,  Hamilton  County,  Indiana;  together with certain  related
personal and intangible  property,  and Purchaser desires to purchase such real,
personal and intangible property; and

         WHEREAS,  Wells  Virginia REIT desires to sell its fee simple estate in
certain  improved real property  defined  herein as the "Alstom Power  Property"
located in the Clover Hill District,  Chesterfield  County,  Virginia,  together
with certain related personal and intangible property,  and Purchaser desires to
purchase such real, personal and intangible property; and

         WHEREAS,  Wells Brea  desires to sell its fee simple  estate in certain
improved real property defined herein as the "Bank of America  Property" located
at 275 S.  Valencia  Avenue,  Brea,  Orange  County,  California,  together with
certain  related  personal and  intangible  property,  and Purchaser  desires to
purchase such real, personal and intangible property; and

         WHEREAS,  Wells  Westlake  desires  to sell its fee  simple  estate  in
certain improved real property defined herein as the "Daimler Chrysler Property"
located in the City of Westlake,  Tarrant County,  Texas,  together with certain
related personal and intangible property, and Purchaser desires to purchase such
real, personal and intangible property; and

         WHEREAS,  Wells  Farmington  Hills and Wells  Kalamazoo  desire to sell
their  respective fee simple estates in certain  improved real property  defined
herein,  respectively,  as the "Dana (Farmington  Hills) Property" and the "Dana
(Kalamazoo)  Property",  together with certain  related  personal and intangible
property  associated  with each of said  properties,  and  Purchaser  desires to
purchase such real, personal and intangible properties; and


                                       2

Purchase and Sale Agreement





         WHEREAS,  Wells EDS  desires to sell its fee  simple  estate in certain
improved real property defined herein as the "EDS Property"  located in the City
of Des Moines,  Polk County,  Iowa,  together with certain related  personal and
intangible  property,  and Purchaser desires to purchase such real, personal and
intangible property; and

         WHEREAS,  Wells  Funds XI and XII REIT JV desire to sell its fee simple
estate in certain  improved real property  defined herein as the "Gartner Office
Building  Property"  located at 12600  Gateway  Boulevard,  in Fort  Myers,  Lee
County, Florida, together with certain related personal and intangible property,
and Purchaser desires to purchase such real,  personal and intangible  property;
and

         WHEREAS,  the  parties  hereto  desire  to  provide  for said  sale and
purchase on the terms and conditions set forth in this Agreement;

         NOW,  THEREFORE,  for and in consideration of the premises,  the mutual
covenants and agreements  hereinafter set forth, and for other good and valuable
consideration,  the  receipt,  adequacy,  and  sufficiency  of which are  hereby
acknowledged by the parties hereto, the parties hereto hereby covenant and agree
as follows:

                                   ARTICLE 1.
                                   DEFINITIONS

         For purposes of this Agreement, each of the following capitalized terms
shall have the meaning ascribed to such terms as set forth below:

         "Allstate  Property"  shall mean that certain  improved  real  property
located in Decatur  Township,  Marion  County,  Indiana,  together  with certain
related personal and intangible property,  being the Wells OP Land identified as
the "Allstate  Property" on EXHIBIT  "A-1"  attached  hereto,  together with the
related  Wells OP  Improvements,  the Wells OP Personal  Property,  the Wells OP
Intangible  Property and all right, title and interest of Wells OP as "landlord"
or "lessor" in and to the Leases,  any guaranties of the Leases and the Security
Deposits, with respect to such Wells OP Land and Wells OP Improvements.

         "Allstate  Purchase  Option"  shall mean that certain  Purchase  Option
Agreement,  dated as of September 11, 2002, between Midwest Logistics  Partners,
L.P. and  Hartsfield  Building,  LLC, the interest of Hartsfield  Building,  LLC
having  been  assigned  to Wells OP  pursuant  to that  certain  Assignment  and
Assumption of Lease,  Contracts and Option  Contract,  dated September 27, 2002,
between  Hartsfield  Building  LLC and Wells OP, and as affected by that certain
Letter,  dated December 16, 2004, from Wells OP to Midwest  Logistics  Partners,
L.P. extending said option.

         "Alstom Power Property" shall mean that certain  improved real property
located in the Clover Hill District,  Chesterfield  County,  Virginia,  together
with certain related personal and intangible property,  being the Wells Virginia
REIT Land  identified as the "Alstom Power  Property" on EXHIBIT "A-2"  attached
hereto and made a part hereof,  together  with the related  Wells  Virginia REIT
Improvements,  Wells  Virginia REIT Personal  Property,  and Wells Virginia


                                       3

Purchase and Sale Agreement





REIT Intangible  Property,  and all right,  title and interest of Wells Virginia
REIT as  "landlord"  or  "lessor" in and to the Leases,  any  guaranties  of the
Leases and the Security Deposits,  with respect to such Wells Virginia REIT Land
and Wells Virginia REIT Improvements.

         "Americredit  Property" shall mean that certain  improved real property
located in Clay County,  Florida,  together  with certain  related  personal and
intangible  property,  being the Wells  Fund  XIII - REIT JV  identified  as the
"Americredit  Property" on EXHIBIT "A-2" attached hereto and made a part hereof,
together with the related Wells Fund XIII -REIT JV Improvements, Wells Fund XIII
- - REIT JV Personal Property,  and Wells Fund XIII - REIT JV Intangible Property,
and all right,  title and interest of Wells Fund XIII - REIT JV as "landlord" or
"lessor" in and to the Leases,  any  guaranties  of the Leases and the  Security
Deposits,  with  respect  to such  Wells Fund XIII - REIT JV Land and Wells Fund
XIII - REIT JV Improvements.

         "ASML  Non-Disturbance  Agreement"  shall  have  the  meaning  ascribed
thereto in Section 4.3(t) hereof.

         "ASML Prime Ground Lease" shall mean that certain  Ground Lease,  dated
October  8,  1984,  between  the  Arizona  Board  of  Regents,  as  lessor,  and
Price-Elliott Research Park, Inc., an Arizona nonprofit corporation,  as lessee,
with respect to the land on which the ASML Property is located.

         "ASML Prime Ground Lease Estoppel  Certificate"  shall mean an estoppel
certificate  substantially in the form attached hereto as EXHIBIT "H-1" and made
a part hereto  executed by the ASML Prime Ground Lessor with respect to the ASML
Prime Ground Lease.

         "ASML Prime Ground Lessor" shall mean the Arizona Board of Regents.

         "ASML  Property"  shall mean the  leasehold  estate of Wells OP in that
certain  improved real property located in Maricopa  County,  Arizona,  together
with  certain  related  personal  and  intangible  property,  being the Wells OP
Property  identified as the "ASML Property" on EXHIBIT "A-1" attached hereto and
made a part hereof,  together with the related Wells OP  Improvements,  Wells OP
Personal Property,  and Wells OP Intangible  Property,  and all right, title and
interest  of  Wells OP as  "landlord"  or  "lessor"  in and to the  Leases,  any
guaranties of the Leases and the Security  Deposits,  with respect to such Wells
OP Leasehold Estate.

         "ASML  Sub-Ground  Lease" shall mean that certain  Ground Lease,  dated
August 22, 1997, between Price-Elliott Research Park, Inc., an Arizona nonprofit
corporation, as lessor, and Ryan Companies US, Inc., a Minnesota corporation, as
lessee,  as the  interest of the  "lessee"  was assigned to Wells OP pursuant to
that certain Assignment and Assumption Agreement,  dated March 29, 2000, between
Ryan Companies US, Inc., as assignor, and Wells OP, as assignee.

         "ASML  Sub-Ground  Lease Estoppel  Certificate"  shall mean an estoppel
certificate  substantially in the form attached hereto as EXHIBIT "H-2" and made
a part hereof  executed by the ASML  Sub-Ground  Lessor with respect to the ASML
Sub-Ground Lease.


                                       4

Purchase and Sale Agreement





         "ASML Sub-Ground Lessor" shall mean Price-Elliott  Research Park, Inc.,
an Arizona nonprofit corporation.

         "ASML  Sublease" shall mean that certain  sublease  between Wells OP as
landlord and ASM Lithography,  Inc. as tenant, as more particularly described on
Exhibit "I" attached hereto and made a part hereof.

         "Assignment  and  Assumption  of  Agreements  Regarding  ISS Letters of
Credit"  shall  mean  that  certain  Assignment  and  Assumption  of  Agreements
Regarding  ISS Letters of Credit to be executed by Wells OP and Purchaser at the
Closing, in the form attached hereto as SCHEDULE 19 and made a part hereof.

         "Assignment  and Assumption of ASML  Sub-Ground  Lease" shall mean that
certain Assignment and Assumption of Lease to be executed and delivered by Wells
OP and Purchaser at the Closing with respect to the ASML  Sublease,  in the form
attached hereto as SCHEDULE 1 and made a part hereof.

         "Assignment  and Assumption of Highwoods  Rental  Guaranty  Agreements"
shall mean that certain  Assignment and Assumption of Highwoods  Rental Guaranty
Agreements to be executed by Wells OP and Purchaser at the Closing,  in the form
attached hereto as SCHEDULE 21 and made a part hereof.

         "Assignment  and Assumption of Ingram Micro Bond Lease" shall mean that
certain Absolute Assignment of Lease and Assumption Agreement to be executed and
delivered  by Wells OP and  Purchaser  at the Closing with respect to the Ingram
Micro Bond  Lease,  in the form  attached  hereto as  SCHEDULE 2 and made a part
hereof.

         "Assignment  and Assumption of Ingram Micro Loan Documents"  shall mean
that  certain  Assignment  of  Fee  Construction  Mortgage  Deed  of  Trust  and
Assignment  of Rents and Leases to be  executed  and  delivered  by Wells OP and
Purchaser at the Closing,  in the form attached  hereto as SCHEDULE 9 and made a
part hereof.

         "Assignment  and Assumption of Ingram Micro  Sublease"  shall mean that
certain Assignment and Assumption of Lease to be executed and delivered by Wells
OP and  Purchaser at the Closing with respect to the Ingram Micro  Sublease,  in
the form attached hereto as SCHEDULE 6 and made a part hereof.

         "Assignment  and  Assumption  of ISS Bond  Documents"  shall  mean that
certain  Assignment  and  Assumption  of ISS Bond  Documents  to be executed and
delivered by Wells OP and  Purchaser at the Closing with respect to the ISS Bond
Documents, in the form attached hereto as SCHEDULE 10 and made a part hereof.

         "Assignment  and  Assumption of ISS Bond Lease" shall mean that certain
Assignment  and Assumption of Lease to be executed and delivered by Wells OP and
Purchaser  at the  Closing  with  respect  to the ISS  Bond  Lease,  in the form
attached hereto as SCHEDULE 3 and made a part hereof.


                                       5

Purchase and Sale Agreement





         "Assignment  and Assumption of ISS  Subleases"  shall mean that certain
Assignment and Assumption of Leases to be executed and delivered by Wells OP and
Purchaser at the Closing with respect to the ISS Subleases, in the form attached
hereto as SCHEDULE 7 and made a part hereof.

         "Assignment and Assumption of Leases" shall mean the form of assignment
and  assumption  of Leases  and  Security  Deposits  and  obligations  under the
Commission  Agreements  to be  executed  and  delivered  by  Purchaser  and  the
applicable Seller as to the Leases,  Security Deposits and Commission Agreements
with respect to the Property or Properties owned by such Seller,  at the Closing
in the form attached hereto as SCHEDULE 4.

         "Assignment and Assumption of Service Contracts" shall mean the form of
assignment and assumption of the Service  Contracts to be executed and delivered
by Purchaser and the applicable  Seller as to the Service Contracts with respect
to the Property or Properties  owned by such Seller,  at the Closing in the form
attached hereto as SCHEDULE 11.

         "Assignment  of Letters of Credit" shall mean the form of Assignment of
Letters of Credit to be executed and delivered by Purchaser  and the  applicable
Sellers  at the  Closing  with  respect  to the  Letters  of  Credit in the form
attached hereto as SCHEDULE 19 and made a part hereof.

         "Association" and "Associations" shall mean each and any one or more of
those certain property owners associations established and existing with respect
to the  Properties  identified  on EXHIBIT "D"  attached  hereto and made a part
hereof.

         "Association    Estoppel    Certificate"   or   "Association   Estoppel
Certificates" shall mean those certain estoppel  certificates executed on behalf
of the applicable Associations,  substantially in the forms required pursuant to
Section 6.1(e) hereof,  with respect to the Properties  described on EXHIBIT "D"
attached hereto and made a part hereof.

         "Association  Notices of Sale" shall have the meaning  ascribed therein
in Section 5.1(ff) hereof.

         "AT&T  (OK)  Property"  shall mean that certain  improved real property
located in Oklahoma  City,  Oklahoma  County,  Oklahoma,  together  with certain
related  personal and  intangible  property,  being the Wells Fund XII - REIT JV
Property identified as the "AT&T (OK) Property" on EXHIBIT "A-2" attached hereto
and made a part  hereof,  together  with the  related  Wells  Fund XII - REIT JV
Improvements,  Wells Fund XII - REIT JV Personal Property,  and Wells Fund XII -
REIT JV Intangible Property, and all right, title and interest of Wells Fund XII
- - REIT JV as "landlord" or "lessor" in and to the Leases,  any guaranties of the
Leases and the Security Deposits,  with respect to such Wells Fund XII - REIT JV
Land and Wells Fund XII - REIT JV Improvements.

         "AT&T  (PA)  Property"  shall mean that certain  improved real property
located in Susquehanna  Township,  Dauphin County,  Pennsylvania,  together with
certain related  personal


                                       6

Purchase and Sale Agreement





and  intangible  property,  being the Wells OP Property  identified as the "AT&T
(PA) Property" on EXHIBIT "A-1" attached hereto and made a part hereof, together
with the related Wells OP Improvements, Wells OP Personal Property, and Wells OP
Intangible Property, and all right, title and interest of Wells OP as "landlord"
or "lessor" in and to the Leases,  any guaranties of the Leases and the Security
Deposits, with respect to such Wells OP Land and Wells OP Improvements.

         "Bank  of America  Property"  shall  mean that  certain  improved  real
property  located in Brea,  Orange  County,  California,  together  with certain
related  personal  and  intangible  property,  being  the  Wells  Brea  Property
identified as the "Bank of America  Property" on EXHIBIT "A-2"  attached  hereto
and made a part hereof, together with the related Wells Brea Improvements, Wells
Brea Personal Property, and Wells Brea Intangible Property, and all right, title
and interest of Wells Brea as "landlord"  or "lessor" in and to the Leases,  any
guaranties of the Leases and the Security  Deposits,  with respect to such Wells
Brea Land and Wells Brea Improvements.

         "Bank  of America ROFR Notice"  shall mean that certain  letter,  dated
January 11, 2005, from Wells Brea to Bank of America, NT & SA (now known as Bank
of America  N.A.),  together  with that  certain  term sheet  accompanying  said
letter, as described in Section 4.3(l) hereof.

         "Basket Limitation" shall mean an amount equal to $100,000.00;

         "Bill  of Sale"  shall  mean the form of bills of sale to the  Personal
Property to be executed and delivered to Purchaser by Wells  Affiliate as to the
Wells Affiliate Personal Property,  and to Purchaser by Wells OP as to the Wells
OP Personal Property, at the Closing in the form attached hereto as SCHEDULE 8.

         "Bond  Documents"  shall have the meaning  ascribed  thereto in Section
4.1(w) hereof.

         "Broker"  shall have the  meaning  ascribed  thereto  in  Section  10.1
hereof.

         "Business  Day"  shall mean any day other  than a  Saturday,  Sunday or
other day on which banking institutions in the States of Georgia or New York are
authorized by law or executive action to close.

         "Cap  Limitation" shall mean, with respect to each Property,  an amount
equal to five percent (5%) of the Purchase Price of such Property, not to exceed
two percent (2%) of the total Purchase Price in the aggregate.

         "Capital  One Lake Easement Deed" shall mean that certain instrument of
deed among  Loch  Levan  Land  Limited  Partnership,  Highwoods  Realty  Limited
Partnership, Wells OP and Wyndham Commercial Association, Inc., substantially in
the form of  Exhibit  "AA"  attached  hereto and made a part  hereof,  with such
changes thereto as may be reasonably requested by any party thereto.


                                       7

Purchase and Sale Agreement





         "Capital  One Property" shall mean that certain  improved real property
located in the Three Chopt  District,  Henrico County,  Virginia,  together with
certain related  personal and intangible  property,  being the Wells OP Property
identified as the "Capital One Property" on EXHIBIT  "A-1"  attached  hereto and
made a part hereof,  together with the related Wells OP  Improvements,  Wells OP
Personal Property,  and Wells OP Intangible  Property,  and all right, title and
interest  of  Wells OP as  "landlord"  or  "lessor"  in and to the  Leases,  any
guaranties of the Leases and the Security  Deposits,  with respect to such Wells
OP Land and Wells OP Improvements.

         "Closing"  shall mean the  consummation of the purchase and sale of the
Properties pursuant to the terms of this Agreement.

         "Closing  Date"  shall  mean the  First  Closing  Date or any  Deferred
Closing Date, as the context may permit or require.

         "Closing  Documents"  shall mean any  certificate,  instrument or other
document delivered pursuant to this Agreement.

         "Commission  Agreements"  shall have the  meaning  ascribed  thereto in
Section 4.1(g) hereof,  and such agreements are more  particularly  described on
EXHIBIT "C" attached hereto and made a part hereof.

         "Daimler  Chrysler  Property"  shall mean that  certain  improved  real
property located in the City of Westlake,  Tarrant County,  Texas, together with
certain  related  personal and  intangible  property,  being the Wells  Westlake
Property identified as the "Daimler Chrysler Property" on EXHIBIT "A-2" attached
hereto  and  made a part  hereof,  together  with  the  related  Wells  Westlake
Improvements,  Wells Westlake Personal Property,  and Wells Westlake  Intangible
Property,  and all right,  title and interest of Wells Westlake as "landlord" or
"lessor" in and to the Leases,  any  guaranties  of the Leases and the  Security
Deposits,   with  respect  to  such  Wells  Westlake  Land  and  Wells  Westlake
Improvements.

         "Dana  (Farmington  Hills)  Property" shall mean that certain  improved
real property located in the City of Farmington Hills, Oakland County, Michigan,
together with certain related personal and intangible property,  being the Wells
Farmington Hills Property  identified as the "Wells (Farmington Hills) Property"
on EXHIBIT  "A-2"  attached  hereto and made a part  hereof,  together  with the
related Wells  Farmington  Hills  Improvements,  Wells Farmington Hills Personal
Property,  and Wells Farmington Hills Intangible Property,  and all right, title
and interest of Wells  Farmington  Hills as "landlord" or "lessor" in and to the
Lease,  any  guaranties of the Lease and the Security  Deposit,  with respect to
such Wells Farmington Hills Land and Wells Farmington Hills Improvements.

         "Dana  (Kalamazoo)  Property"  shall mean that  certain  improved  real
property located in Kalamazoo  County,  Michigan,  together with certain related
personal and intangible property,  being the Wells Kalamazoo Property identified
as the "Wells  Kalamazoo  Property" on EXHIBIT "A-2" attached  hereto and made a
part hereof,  together  with the related  Wells  Kalamazoo  Improvements,  Wells
Kalamazoo Personal Property,  and Wells Kalamazoo Intangible  Property,


                                       8

Purchase and Sale Agreement





and all right,  title and interest of Wells  Kalamazoo as "landlord" or "lessor"
in and to the Lease, any guaranties of the Lease and the Security Deposit,  with
respect to such Wells Kalamazoo Land and Wells Kalamazoo Improvements.

         "Declarant"  or "Declarants" shall mean with respect to each applicable
Property the "declarant" or similar person under any Declaration  affecting such
Property.

         "Declarant  Estoppel Certificate" or "Declarant Estoppel  Certificates"
shall  mean  estoppel  certificates  executed  by the  holders  of the rights of
"Declarant" or similar rights under the Declarations,  substantially in the form
required pursuant to Section 6.1(f) hereof,  affecting the Properties  described
on EXHIBIT "D" attached hereto and made a part hereof.

         "Declaration"  and "Declarations" shall mean those certain declarations
of easements,  covenants and conditions more  particularly  described on EXHIBIT
"D" attached hereto and made a part hereof.

         "Deferred  Closing  Date"  shall have the meaning  ascribed  thereto in
Section 2.7(b) hereof.

         "Deferred  Closing Property" shall have the meaning ascribed thereto in
Section 2.7(b) hereof.

         "Dial  Corporation  Property"  shall mean that  certain  improved  real
property located in Scottsdale,  Maricopa County, Arizona, together with certain
related personal and intangible property, being the Wells OP Property identified
as the "Dial  Corporation  Property" on EXHIBIT "A-1" attached hereto and made a
part hereof, together with the related Wells OP Improvements,  Wells OP Personal
Property, and Wells OP Intangible Property, and all right, title and interest of
Wells OP as "landlord" or "lessor" in and to the Leases,  any  guaranties of the
Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.

         "Due Diligence  Deliveries"  shall have the meaning ascribed thereto in
Section 3.2 hereof.

         "Due Diligence  Material"  shall have the meaning  ascribed  thereto in
Section 3.7 hereof.

         "Earnest  Money"  shall  mean the sum of  Forty  Million  Five  Hundred
Thousand and No/100 Dollars  ($40,500,000.00  U.S.),  together with all interest
which  accrues  thereon as provided in Section  2.4(b)  hereof and in the Escrow
Agreement.

         "EDS  Property" shall mean that certain  improved real property located
in Des Moines,  Polk County,  Iowa,  together with certain related  personal and
intangible  property,  being  the  Wells  EDS  Property  identified  as the "EDS
Property" on EXHIBIT "A-2" attached hereto and made a part hereof, together with
the related Wells EDS Improvements,  Wells EDS Personal Property,  and Wells EDS
Intangible  Property,  and  all  right,  title  and  interest  of  Wells  EDS as


                                       9

Purchase and Sale Agreement





"landlord"  or "lessor" in and to the Leases,  any  guaranties of the Leases and
the  Security  Deposits,  with  respect  to such  Wells  EDS Land and  Wells EDS
Improvements.

         "Effective  Date" shall mean the date upon which  Sellers and Purchaser
shall have executed and delivered at least two (2) fully  executed  counterparts
of this  Agreement  to  each  other  party,  and at  least  three  (3)  executed
counterparts of the Escrow Agreement to Escrow Agent.

         "Environmental  Law" shall mean any law, ordinance,  rule,  regulation,
order,  judgment,  injunction  or decree  relating to pollution or substances or
materials  which are  considered  to be hazardous or toxic,  including,  without
limitation,  the  Resource  Conservation  and Recovery  Act,  the  Comprehensive
Environmental Response,  Compensation and Liability Act, the Hazardous Materials
Transportation  Act, the Clean Water Act, the Toxic Substances  Control Act, the
Emergency  Planning  and  Community  Right to Know  Act,  any  state  and  local
environmental  law, all amendments  and  supplements to any of the foregoing and
all regulations and publications promulgated or issued pursuant thereto.

         "Escrow  Agent"  shall  mean the Title  Company,  at its office at 4170
Ashford Dunwoody Road, Suite 460, in Atlanta, Georgia, 30319.

         "Escrow Agreement" shall mean that certain Escrow Agreement in the form
attached hereto as EXHIBIT "E" entered into contemporaneously with the execution
and  delivery of this  Agreement  by Sellers,  Purchaser  and Escrow  Agent with
respect to the Earnest Money.

         "Excess Amount" shall have the meaning ascribed thereto in Section 11.3
hereof.

         "Excluded  Property"  shall have the meanings set forth in Sections 7.1
and 7.2 hereof.

         "Existing  Environmental  Reports"  shall mean those  certain  reports,
correspondence  and related  materials,  if any, more particularly  described on
EXHIBIT "F" attached hereto and made a part hereof.

         "Existing  Survey" and "Existing Surveys" shall mean any one or more of
those certain surveys with respect to the Land and the Improvements or the Wells
Affiliate  Ground  Lease Lands or the Wells OP Ground Lease Land,  if any,  more
particularly described on EXHIBIT "G" attached hereto and made a part hereof.

         "Experian  Property"  shall mean that certain  improved  real  property
located  in the City of Allen,  Collin  County,  Texas,  together  with  certain
related personal and intangible property, being the Wells OP Property identified
as the  "Experian  Property" on EXHIBIT  "A-1"  attached  hereto and made a part
hereof,  together  with the  related  Wells OP  Improvements,  Wells OP Personal
Property, and Wells OP Intangible Property, and all right, title and interest of
Wells OP as "landlord" or "lessor" in and to the Leases,  any  guaranties of the
Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.


                                       10

Purchase and Sale Agreement





         "FIRPTA  Affidavit"  shall  mean the  form of  FIRPTA  Affidavit  to be
executed and delivered to Purchaser at Closing by each Seller as to the Property
owned by such Seller, substantially in the form attached hereto as SCHEDULE 15.

         "First  Closing  Date " shall  have the  meaning  ascribed  thereto  in
Section 2.7(a) hereof.

         "Gartner Lease Amendment" shall mean an amendment to that certain Lease
with  Gartner  Group,  Inc.  relating to the Gartner  Office  Building  Property
substantially  in the  form  attached  hereto  as  Exhibit  "CC" and made a part
hereof.

         "Gartner  Office Building  Property"  shall mean that certain  improved
real property  located in Lee County,  Florida,  together  with certain  related
personal  and  intangible  property,  being the Wells Funds XII and XIII REIT JV
Property  identified as the "Gartner Office Building  Property" on EXHIBIT "A-2"
attached  hereto and made a part hereof,  together  with the related Wells Funds
XII and XIII REIT JV  Improvements,  Wells  Funds XII and XIII REIT JV  Personal
Property,  and Wells  Funds XII and XIII REIT JV  Intangible  Property,  and all
right,  title and interest of Wells Funds XII and XIII REIT JV as  "landlord" or
"lessor" in and to the Leases,  any  guaranties  of the Leases and the  Security
Deposits,  with  respect to such Wells Funds XII and XIII REIT JV Land and Wells
Funds XII and XIII REIT JV Improvements.

         "Gartner  Office Lease" shall mean that certain office lease  affecting
the Gartner Property as more particularly described on the attached Exhibit "I".

         "Gartner Parking Lease" shall mean that certain parking lease affecting
the Gartner Property as more particularly described on the attached Exhibit "I".

         "Gartner  Parking  Plans"  shall  mean  those  certain  plans  for  the
construction and installation of surface parking and related improvements on the
Gartner Surface Parking Property as more particularly  described on Exhibit "FF"
attached hereto and made a part hereof.

         "Gartner  Parking  Work" shall having the meaning  ascribed  thereto in
Section 4.3(s) hereof and shall include the work contemplated  under the Gartner
Parking Plans.

         "Gartner  Property"  shall  mean,  collectively,   the  Gartner  Office
Building  Property,  which is owned by Wells  Funds XI and XII REIT JV,  and the
Gartner Surface Parking Property, which is owned by Wells OP.

         "Gartner  Surface  Parking  Property"  shall  mean  that  certain  real
property located in Lee County,  Florida,  improved as surface parking, which is
adjacent to the Gartner Office Building Property owned by Wells Funds XI and XII
REIT JV, together with certain related personal and intangible  property,  being
the Wells OP Land  identified as "Gartner  Surface  Parking  Parcels" on EXHIBIT
"A-2" attached hereto and made a part hereof, together with the related Wells OP
Improvements,  the Wells OP Personal Property,  the Wells OP Intangible Property
and all right,  title and interest of Wells OP as  "landlord" or "lessor" in and
to the Lease with respect to such Wells OP Land and Wells OP Improvements.


                                       11

Purchase and Sale Agreement





         "General Assignment" shall mean an assignment by each applicable Seller
of its interest in intangible property owned by such Seller (being such Seller's
interest  in the  Intangible  Property)  and  being  conveyed  as a part of such
Seller's  Property,  to be executed by such Seller at Closing,  substantially in
the form  attached  hereto  as  SCHEDULE  12 and made a part  hereto,  with such
changes  thereto as may be agreed  upon by such Seller and  Purchaser  to convey
such Seller's intangible property associated with the Property of such Seller.

         "Ground  Lessor Estoppel Certificates" shall mean the ASML Prime Ground
Lease Estoppel  Certificate,  the ASML Sub-Ground Lease Estoppel Certificate and
the Ingram Micro Bond Lease  Estoppel  Certificate,  substantially  in the forms
attached hereto as EXHIBIT "H-1", EXHIBIT "H-2" and EXHIBIT "H-3", respectively.

         "Hazardous Substances" shall mean any and all pollutants, contaminants,
toxic or hazardous  wastes or any other  substances  that might pose a hazard to
health or  safety,  the  removal  of which may be  required  or the  generation,
manufacture,  refining,  production,  processing,  treatment, storage, handling,
transportation,  transfer, use, disposal, release, discharge,  spillage, seepage
or filtration of which is or shall be restricted,  prohibited or penalized under
any Environmental Law (including, without limitation, lead paint, asbestos, urea
formaldehyde foam insulation, petroleum and polychlorinated biphenyls).

         "Highwoods Estoppel  Certificate" or "Highwoods Estoppel  Certificates"
shall mean estoppel certificates to be sought from Highwoods Properties, Inc., a
Maryland  corporation,  with respect to each of the  Highwoods  Rental  Guaranty
Agreements,  in substantially the form attached hereto as EXHIBIT "Y" and made a
part hereof.

         "Highwoods  Rental  Guaranty  Agreements"  shall mean (a) that  certain
Rental Guaranty Agreement (East Shore I), dated as of November 26, 2002, between
Highwoods  Properties,  Inc.,  a  Maryland  corporation,  and Wells OP, (b) that
certain  Rental  Guaranty  Agreement  (East Shore II),  dated as of November 26,
2002, between Highwoods Properties,  Inc., a Maryland corporation, and Wells OP,
and (c) that certain Rental  Guaranty  Agreement  (East Shore III),  dated as of
November 26, 2002, between Highwoods  Properties,  Inc., a Maryland corporation,
and Wells OP, with respect to certain Leases affecting the Capital One Property.

         "IKON  Property" shall mean that certain improved real property located
in Harris County,  Texas,  together with certain related personal and intangible
property,  being the Wells OP  Property  identified  as the "IKON  Property"  on
EXHIBIT "A-1" attached hereto and made a part hereof,  together with the related
Wells OP  Improvements,  Wells OP  Personal  Property,  and Wells OP  Intangible
Property,  and all  right,  title  and  interest  of Wells OP as  "landlord"  or
"lessor" in and to the Leases,  any  guaranties  of the Leases and the  Security
Deposits, with respect to such Wells OP Land and Wells OP Improvements.

         "Improvements"  shall  mean the  Wells OP  Improvements  and the  Wells
Affiliate Improvements.

         "Ingram   Micro  Bond   Certificate"   shall  mean  that  certain  Bond
Certificate  substantially in the form attached hereto as SCHEDULE 13 and made a
part hereof.


                                       12

Purchase and Sale Agreement





         "Ingram  Micro Bond Lease" shall mean that  certain Bond Real  Property
Lease, dated as of December 20, 1995, between the Ingram Micro Ground Lessor and
Lease Plan North  America,  Inc.,  an Illinois  corporation,  as lessee,  as the
interest of the  "lessee"  thereunder  was  assigned  pursuant  to that  certain
Absolute Assignment of Lease and Assumption Agreement,  dated as of December 20,
2000,  between Lease Plan North  America,  Inc., as assignor,  and Ingram Micro,
L.P., a Tennessee limited partnership,  as assignee,  and as the interest of the
"lessee"  thereunder  was further  assigned  pursuant to that  certain  Absolute
Assignment of Lease and  Assumption  Agreement,  dated as of September 20, 2001,
between Ingram Micro, L.P., as assignor, and Wells OP, as assignee.

         "Ingram  Micro Bond Lease Estoppel  Certificate" shall mean an estoppel
certificate executed by the Ingram Micro Ground Lessor substantially in the form
and  substance as attached  hereto as EXHIBIT  "H-3" and made a part hereof with
respect to the Ingram Micro Bond Lease.

         "Ingram Micro Fee Construction Mortgage Deed of Trust and Assignment of
Rents and Leases"  shall mean that  certain Fee  Construction  Mortgage  Deed of
Trust and Assignment of Rents and Leases,  dated December 20, 1995,  recorded as
Instrument No. FN 4355 in the Register's Office of Shelby County, Tennessee from
the Ingram Micro Ground Lessor to First American Title Insurance Company for the
benefit of Lease Plan North America, Inc., as mortgagee,  as the interest of the
"mortgagee"  thereunder was assigned pursuant to that certain  Assignment of Fee
Construction Mortgage Deed of Trust and Assignment of Rents and Leases, dated as
of December 20, 1995, between Lease Plan North American,  Inc., as assignor, and
ABN Amro Bank N.V.,  Atlanta  Branch,  as assignee,  recorded as Instrument  No.
4356,  aforesaid  records,  as the interest of the  "mortgagee"  thereunder  was
further assigned  pursuant to that certain Absolute  Assignment of Bond and Deed
of Trust, dated December 20, 2000, recorded as Instrument No. KV 3969, aforesaid
records, between ABN Amro Bank N.V. (formerly referred to as ABN Amro Bank N.V.,
Atlanta  Branch),  as  assignor,  and Ingram  Micro L.P.,  as  assignee,  as the
interest of the  "mortgagee"  thereunder was further  assigned  pursuant to that
certain Assignment of Fee Construction  Mortgage Deed of Trust and Assignment of
Rents and Leases,  dated as of September 7, 2001,  between Ingram Micro L.P., as
assignor, and Wells OP, as assignee.

         "Ingram  Micro Ground  Lessor"  shall mean The  Industrial  Development
Board  of the  City of  Millington,  Tennessee,  a  Tennessee  public  nonprofit
corporation.

         "Ingram  Micro  Industrial  Development  Revenue  Note" shall mean that
certain Industrial  Development  Revenue Note (Ingram Micro L.P.) Series 1995 of
The Industrial Development Board of the City of Millington,  Tennessee, dated as
of December 20, 1995, by the Ingram Micro Ground Lessor to and in favor of Lease
Plan North  American,  Inc.,  in the  original  principal  amount of  Twenty-Two
Million and No/100 Dollars ($22,000,000.00), the original of which has been lost
or misplaced and is not in the possession of Sellers.

         "Ingram  Micro Leasehold Estate" shall mean the leasehold estate in the
land and improvements  forming a part of the Ingram Micro Property,  created and
existing under and by virtue of the Ingram Micro Bond Lease.


                                       13

Purchase and Sale Agreement





         "Ingram   Micro  Loan  Documents"  shall  mean  the  Ingram  Micro  Fee
Construction  Mortgage  Deed of Trust and  Assignment  of Rents and Leases,  the
Ingram  Micro  Industrial  Development  Revenue  Note,  the Ingram  Micro  PILOT
Agreement,  and any other  documents or agreements  executed in connection  with
such documents to the extent of any or all of the interest of Wells OP therein.

         "Ingram Micro PILOT  Agreement" shall mean that certain Payment in Lieu
of Tax Agreement,  dated December 20, 1995, by and between Ingram Micro L.P. and
the Ingram Micro Ground Lessor.

         "Ingram  Micro Property" shall mean the leasehold estate of Wells OP in
that certain  improved  real  property  located in  Millington,  Shelby  County,
Tennessee, together with certain related personal and intangible property, being
the Wells OP Property identified as the "Ingram Micro Property" on EXHIBIT "A-1"
attached  hereto and made a part  hereof,  together  with the  related  Wells OP
Improvements,  Wells OP Personal Property, and Wells OP Intangible Property, and
all right,  title and interest of Wells OP as  "landlord"  or "lessor" in and to
the Leases, any guaranties of the Leases and the Security Deposits, with respect
to such Wells OP Leasehold Interest.

         "Ingram  Micro  Sublease"  shall mean that  certain  Indenture of Lease
between  Wells  OP as  landlord  and  Ingram  Micro  L.P.  as  tenant,  as  more
particularly described on EXHIBIT "I" attached hereto and made a part hereof.

         "Inspection  Period"  shall mean the period  commencing on December 29,
2004, and expiring at 5:00 P.M. Eastern Standard Time on February 21, 2005.

         "Intangible  Property" shall mean the Wells OP Intangible  Property and
the Wells Affiliate Intangible Property.

         "ISS"  shall  mean   Internet   Security   Systems,   Inc.,  a  Georgia
corporation.

         "ISS  Bond  Documents"  shall  mean  (a)  that  certain  Bond  Purchase
Agreement between the ISS Issuer and Mount Vernon Place Partners, LLC, a Georgia
limited liability  company,  dated as of September 1, 2000,  relating to Taxable
Revenue Bonds (Internet  Security  Systems,  Inc.  Project),  Series 2000A,  (b)
Payment and  Indemnity  Agreement  by and among the ISS Issuer,  SunTrust  Bank,
Mount  Vernon  Place  Partners,  LLC,  and ISS,  dated as of  September 1, 2000,
relating to Taxable Revenue Bonds (Internet  Security  Systems,  Inc.  Project),
Series 2000A, and (c) Home Office Payment  Agreement by and among SunTrust Bank,
the ISS Issuer and Mount Vernon Place  Partners,  LLC,  dated as of September 1,
2000,  as the  interests of Mount Vernon Place  Partners,  LLC  thereunder  were
assigned to Wells OP pursuant to that certain  Assignment and Assumption of Bond
Documents  between  Mount Vernon Place  Partners,  LLC and Wells OP, dated as of
July 1, 2002.

         "ISS  Bond Lease" shall mean that certain Series 2000A Lease  Agreement
between the ISS Issuer and Mount Vernon Place  Partners,  LLC, a Georgia limited
liability company, dated as


                                       14

Purchase and Sale Agreement





of  September 1, 2000,  recorded in Deed Book 29773,  Page 621,  Fulton  County,
Georgia records; as amended by that certain Amendment to Lease Agreement between
the ISS Issuer and Mount Vernon Place  Partners,  LLC,  dated as of December 20,
2001,  recorded in Deed Book 31888, Page 436, aforesaid  records;  as amended by
Second  Amendment  to Series 2000A Lease  Agreement,  between the ISS Issuer and
Mount Vernon Place  Partners,  LLC,  dated as of July 1, 2002,  recorded in Deed
Book  32669,  Page 299,  aforesaid  records;  as the  interest  of the  "lessee"
thereunder  was  assigned to Wells OP pursuant to that  certain  Assignment  and
Assumption of Lease between Mount Vernon Place Partners, LLC and Wells OP, dated
as of July 1, 2002,  recorded in Deed Book 32669, Page 313,  aforesaid  records;
and as amended by that certain  Amendment No. 3 to Series 2000A Lease  Agreement
between the ISS Issuer and Wells OP, dated  December 29, 2003,  recorded in Deed
Book 36785, Page 24, aforesaid records.

         "ISS  Bonds" shall mean,  collectively,  (a) that  certain  Development
Authority of Fulton County Taxable Revenue Bond (Internet Security Systems, Inc.
Project),  Series  2000A,  issued by the ISS Issuer,  dated as of September  14,
2000,  Numbered  AR-3,  in the stated  amount of  $26,000,000,  (b) that certain
Development  Authority of Fulton County Taxable Revenue Bond (Internet  Security
Systems,  Inc.  Project),  Series 2000A,  issued by the ISS Issuer,  dated as of
December 20, 2001,  Numbered AR-4, in the stated amount of  $6,500,000,  and (c)
that  certain  Development  Authority  of Fulton  County  Taxable  Revenue  Bond
(Internet  Security  Systems,  Inc.  Project),  Series 2000A,  issued by the ISS
Issuer,  dated as of December 29, 2003,  Numbered  AR-5, in the stated amount of
$10,000,000.

         "ISS Ground  Lessor"  shall mean the  Development  Authority  of Fulton
County, Georgia.

         "ISS Home Office Payment Agreement" shall mean that certain Home Office
Payment  Agreement among the ISS Trustee,  the ISS Issuer and Purchaser,  in its
capacities  as the  purchaser  of the ISS Series  2000A Bonds and the  successor
lessee  under the ISS Bond  Lease,  in the form and  substance  of  SCHEDULE  17
attached hereto and made a part hereof.

         "ISS Issuer"  shall mean the  Development  Authority of Fulton  County,
Georgia.

         "ISS Lease  Amendment"  shall mean a letter  amendment  to that certain
Lease with Internet Security Systems, Inc. for Building III substantially in the
form attached hereto as Exhibit "DD" and made a part hereof.

         "ISS Leasehold  Estate" shall mean that certain leasehold estate in and
to the land  and  improvements  which  are a part of the ISS  Property,  as said
leasehold estate is created and established pursuant to the ISS Bond Lease.

         "ISS  Property"  shall  mean the  leasehold  estate of Wells OP in that
certain  improved real property  located in the City of Atlanta,  Fulton County,
Georgia,  together with certain related personal and intangible property,  being
the Wells OP Property identified as the "ISS Property" on EXHIBIT "A-3" attached
hereto and made a part hereof,  together with the related Wells OP Improvements,
Wells OP Personal  Property,  and Wells OP Intangible  Property,  and all right,
title and interest of Wells OP as  "landlord"  or "lessor" in and to the Leases,
any guaranties of the


                                       15

Purchase and Sale Agreement





Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.

         "ISS  Subleases"  shall mean those two (2)  certain  subleases  between
Wells OP as  landlord  and ISS as  tenant,  as more  particularly  described  on
EXHIBIT "I" attached hereto and made a part hereof.

         "ISS Trustee" shall mean SunTrust Bank, a state banking corporation, as
trustee under the ISS Bond Documents.

         "John  Wiley Property"  shall mean that certain  improved real property
located in Delaware Township,  Hamilton County,  Indiana,  together with certain
related  personal and intangible  property,  being the Wells Fund XIII - REIT JV
Property  identified  as the "John Wiley  Property"  on EXHIBIT  "A-1"  attached
hereto and made a part hereof,  together with the related Wells Fund XIII - REIT
JV  Improvements,  Wells Fund XIII - REIT JV Personal  Property,  and Wells Fund
XIII - REIT JV Intangible  Property,  and all right, title and interest of Wells
Fund  XIII - REIT  JV as  "landlord"  or  "lessor"  in  and to the  Leases,  any
guaranties of the Leases and the Security  Deposits,  with respect to such Wells
Fund XIII - REIT JV Land and Wells Fund XIII - REIT JV Improvements.

         "Kerr  McGee Property"  shall mean that certain  improved real property
located in Houston, Harris County, Texas, together with certain related personal
and  intangible  property,  being the Wells OP Property  identified as the "Kerr
McGee  Property"  on  EXHIBIT  "A-1"  attached  hereto  and made a part  hereof,
together with the related Wells OP Improvements, Wells OP Personal Property, and
Wells OP Intangible  Property,  and all right, title and interest of Wells OP as
"landlord"  or "lessor" in and to the Leases,  any  guaranties of the Leases and
the  Security  Deposits,  with  respect  to such  Wells  OP Land  and  Wells  OP
Improvements.

         "Kerr  McGee  Sewer  Easement"  shall  mean that sewer  easement  to be
granted by Wells OP to the owner of certain  property  adjoining  the Kerr McGee
Property,  substantially  in the form  attached  hereto as EXHIBIT "Z"  attached
hereto and made a part hereof, which easement Wells OP agreed to grant and which
has been in the process of negotiation  with said  adjoining  property owner for
more than one year.

         "Kraft  Foods Property" shall mean that certain  improved real property
located in Forsyth County,  Georgia,  together with certain related personal and
intangible property,  being the Wells OP Property identified as the "Kraft Foods
Property" on EXHIBIT "A-1" attached hereto and made a part hereof, together with
the related  Wells OP  Improvements,  Wells OP Personal  Property,  and Wells OP
Intangible Property, and all right, title and interest of Wells OP as "landlord"
or "lessor" in and to the Leases,  any guaranties of the Leases and the Security
Deposits, with respect to such Wells OP Land and Wells OP Improvements.

         "Land"  shall mean,  as the context  permits or requires,  the Wells OP
Lands and the Wells Affiliate Lands and the real property in which Wells OP owns
a leasehold interest pursuant to the Wells OP Ground Leases.


                                       16

Purchase and Sale Agreement





         "Lease"  and  "Leases"  shall  mean,  as to Wells  OP,  the  leases  or
occupancy agreements (and all amendments and modifications  thereto) (other than
the Wells OP Ground  Leases),  which  affect all or any  portion of the Wells OP
Land or Wells OP Improvements,  including those in effect on the Effective Date,
which are more particularly  identified on EXHIBIT "I" attached hereto,  and any
amended or new leases entered into pursuant to Section 4.3(a) of this Agreement,
which as of the Closing  affect all or any portion of the Wells OP Land or Wells
OP  Improvements,  and shall  mean,  as to the Wells  Affiliates,  the leases or
occupancy  agreements and all amendments and modifications  thereto which affect
all or any portion of the Wells Affiliate Land or Wells Affiliate  Improvements,
including  those in effect on the Effective  Date,  which are more  particularly
identified on EXHIBIT "I" attached hereto, and any amended or new leases entered
into  pursuant  to Section  4.3(a) of this  Agreement,  which as of the  Closing
affect  all or any  portion  of the  Wells  Affiliate  Lands or Wells  Affiliate
Improvements.

         "Lease  Guarantor" or "Lease Guarantors" shall mean each or more of the
following  guarantors of certain  Leases or certain  obligations  of the tenants
under such Leases affecting one or more of the following Properties:

                  (a) AmeriCredit Corp., as guarantor of the certain obligations
         of the tenant  under the Lease  with  AmeriCredit  Financial  Services,
         Inc., affecting the Americredit Property;

                  (b) ASM  Lithography  Holding  NV,  as  guarantor  of  certain
         obligations of the tenant under the Lease with ASM  Lithography,  Inc.,
         affecting the ASML Property;

                  (c) Vanguard  Cellular  Financial  Corp.  (or its successor by
         merger),  as guarantor of certain  obligations  of the tenant under the
         Lease with Pennsylvania  Cellular  Telephone Corp.,  affecting the AT&T
         (PA) Property;

                  (d)  Electronic  Data  Systems  Corporation,  as  guarantor of
         certain  obligations of the tenant under the Lease with EDS Information
         Services LLC, affecting the EDS Property;

                  (e) Ingram Micro, Inc., as guarantor of certain obligations of
         the tenant under the Lease with Ingram Micro LP,  affecting  the Ingram
         Micro Property;

                  (f) Internet Security Systems,  Inc., a Delaware  corporation,
         as guarantor of certain obligations of the tenant under the Leases with
         Internet Security Systems,  Inc., a Georgia corporation,  affecting the
         ISS Property;

                  (g)   Kerr-McGee   Corporation,   as   guarantor   of  certain
         obligations  of the tenant  under the Lease with  Kerr-McGee  Oil & Gas
         Corporation, affecting the Kerr McGee Property;

                  (h)  Metris   Companies,   Inc.,   as   guarantor  of  certain
         obligations  of the tenant  under the Lease with Metris  Direct,  Inc.,
         under its Lease, affecting the Metris Property;


                                       17

Purchase and Sale Agreement





                  (i)  Nissan  North  America,  Inc.,  as  guarantor  of certain
         obligations of the tenant under the Lease with Nissan Motor  Acceptance
         Corporation, affecting the Nissan Property;

                  (j)  Transocean  Sedco  Forex,  Inc, as  guarantor  of certain
         obligations  of the  tenant  under the Lease with  Transocean  Offshore
         Deepwater Drilling, Inc., affecting the Transocean Property; and

                  (k)  Newpark   Resources,   Inc.,   as  guarantor  of  certain
         obligations of the tenant under the Lease with Newpark Drilling Fluids,
         Inc., affecting the Transocean Property.

         "Lease Guarantor  Estoppel  Certificate" or "Lease  Guarantor  Estoppel
Certificates" shall mean those certain estoppel  certificates executed on behalf
of the applicable Lease Guarantors  substantially in the form attached hereto as
EXHIBIT "T" and made a part hereof.

         "Lease  Guaranty" or "Lease  Guaranties"  shall mean any one or more of
those  certain  guaranties  of certain  obligations  of the tenants made by each
Lease Guarantor.

         "Lender" or "Lenders" shall mean Bank of America,  N.A. with respect to
the  Experian  Property,  the IKON  Property and the Kraft Foods  Property;  and
SouthTrust Bank, National Association with respect to the Alstom Power Property,
the ASML Property and the Dial Corporation Property.

         "Letter of Credit" and  "Letters of Credit"  shall mean any one or more
of  those  certain  letters  of  credit  delivered  by  certain  tenants  of the
Properties  to the  Sellers  who are the  owners  of  such  Properties,  as more
particularly described on EXHIBIT "J" attached hereto and made a part hereof.

         "Limited  Warranty  Deed"  shall have the meaning  ascribed  thereto in
Section 5.1(a) hereof.

         "Loan"  or  "Loans"  shall  mean  each  and all of the  mortgage  loans
secured,  respectively,  by the following Properties: the Alstom Power Property,
the ASML Property,  the Dial Corporation  Property,  the Experian Property,  the
IKON Property and the Kraft Foods Property.

         "Losses"  shall have the  meaning  ascribed  thereto  in  Section  11.1
hereof.

         "Lucent  Property" shall mean that certain improved and unimproved real
property  located in Cary, Wake County,  North  Carolina,  together with certain
related personal and intangible property, being the Wells OP Property identified
as the  "Lucent  Property"  on  EXHIBIT  "A-1"  attached  hereto and made a part
hereof,  together  with the  related  Wells OP  Improvements,  Wells OP Personal
Property, and Wells OP Intangible Property, and all right, title and interest of
Wells OP as "landlord" or "lessor" in and to the Leases,  any  guaranties of the
Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.


                                       18

Purchase and Sale Agreement





         "Lucent Property  Declaration"  shall mean that certain  Declaration of
Covenants, Conditions and Restrictions for Regency Park, dated February 1, 1996,
recorded in Book 6933,  page 342,  Wake  County,  North  Carolina  Registry,  as
amended  by  First  Amendment  to  Declaration  of  Covenants,   Conditions  and
Restrictions  for Regency  Park,  dated August 14, 1996,  recorded in Book 7112,
page 641,  aforesaid  records,  as amended by Second Amendment to Declaration of
Covenants,  Conditions and Restrictions for Regency Park, dated August 30, 1996,
recorded  in Book  7135,  page  870,  aforesaid  records,  as  amended  by Third
Amendment to Declaration of Covenants,  Conditions and  Restrictions for Regency
Park,  dated  September  27, 1996,  recorded in Book 7164,  page 610,  aforesaid
records.

         "Major  Tenant" or "Major  Tenants"  shall mean each one or more of the
following tenants of the Properties:

                  (a)      with  respect  to  the  Allstate  Property,  Allstate
Insurance Company, an Illinois corporation;

                  (b)      with  respect to the Alstom  Power  Property,  Alstom
Power, Inc., a Delaware corporation;

                  (c)      with respect to the AmeriCredit Property, AmeriCredit
Financial Services, Inc., a Delaware corporation;

                  (d)      with respect to the ASML Property,  ASM  Lithography,
Inc., a Delaware corporation;

                  (e)      with respect to the AT&T (OK) Property, AT&T Wireless
Services,  Inc., a Delaware corporation  (successor in interest to AT&T Corp., a
New York corporation);

                  (f)      with respect to the AT&T (PA) Property,  Pennsylvania
Cellular  Telephone  Corp.,  a North Carolina  corporation  (d/b/a AT&T Wireless
Services);

                  (g)      with respect to the Bank of America Property, Bank of
America NT & SA, a national banking corporation;

                  (h)      with respect to the Capital One Property, Capital One
Services, Inc., a Delaware corporation;

                  (i)      with  respect  to  the  Daimler  Chrysler   Property,
Chrysler Financial Company, LLC, a Michigan limited liability company;

                  (j)      with respect to the Dana  Farmington  Hills Property,
Dana Corporation, a Virginia corporation;

                  (k)      with  respect to the Dana  Kalamazoo  Property,  Dana
Corporation, a Virginia corporation;


                                       19

Purchase and Sale Agreement





                  (l)      with respect to the Dial  Corporation  Property,  The
Dial Corporation, a Delaware corporation;

                  (m)      with  respect to the EDS  Property,  EDS  Information
Services L.L.C., a Delaware limited liability company;

                  (n)      with  respect  to  the  Experian  Property,  Experian
Information Solutions, Inc., an Ohio corporation;

                  (o)      with respect to the Gartner Property,  Gartner, Inc.,
a Delaware corporation;

                  (p)      with  respect  to  the  IKON  Property,  IKON  Office
Solutions, Inc., an Ohio corporation;

                  (q)      with  respect to the Ingram  Micro  Property,  Ingram
Micro L.P., a Tennessee limited partnership;

                  (r)      with respect to the ISS Property,  Internet  Security
Systems, Inc., a Georgia corporation;

                  (s)      with respect to the John Wiley Property, John Wiley &
Sons, Inc., a New York corporation;

                  (t)      with respect to the Kerr McGee  Property,  Kerr-McGee
Oil & Gas Corporation, a Delaware corporation;

                  (u)      with respect to the Kraft Foods Property, Kraft Foods
North America, Inc. a Delaware corporation;

                  (v)      with   respect   to  the  Lucent   Property,   Lucent
Technologies Inc., a Delaware corporation;

                  (w)      with respect to the Metris  Property,  Metris Direct,
Inc., a Delaware corporation;

                  (x)      with  respect to the Nissan  Property,  Nissan  Motor
Acceptance Company, a Delaware corporation;

                  (y)      with respect to the Pacificare  Property,  PacifiCare
Health Systems, Inc., a Delaware corporation;

                  (z)      with respect to the Transocean  Property,  Transocean
Offshore Deepwater Drilling Inc., a Delaware  corporation,  and Newpark Drilling
Fluids, LLC, a Texas limited liability company; and


                                       20

Purchase and Sale Agreement





                  (aa)     with  respect  to  the  Travelers  Express  Property,
Travelers Express Company, Inc., a Minnesota corporation.

         "Metris  Property"  shall  mean that  certain  improved  real  property
located in the City of Tulsa,  Tulsa  County,  Oklahoma,  together  with certain
related personal and intangible property, being the Wells OP Property identified
as the  "Metris  Property"  on  EXHIBIT  "A-1"  attached  hereto and made a part
hereof,  together  with the  related  Wells OP  Improvements,  Wells OP Personal
Property, and Wells OP Intangible Property, and all right, title and interest of
Wells OP as "landlord" or "lessor" in and to the Leases,  any  guaranties of the
Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.

         "Monetary  Objection"  or  "Monetary  Objections"  with respect to each
individual  Property shall mean (a) any mortgage,  deed to secure debt,  deed of
trust  or  similar  security  instrument  encumbering  all or any  part  of such
Property,  (b) any mechanic's,  materialman's or similar lien (unless  resulting
from  any  act or  omission  of  Purchaser  or any of its  agents,  contractors,
representatives or employees or any tenant of such Property), (c) the lien of ad
valorem real or personal  property taxes,  assessments and governmental  charges
affecting  all or any portion of such  Property  which are  delinquent,  (d) any
judgment of record  (other than a judgment  of record  against a tenant  under a
Lease at such Property)  against such Property in the county or other applicable
jurisdiction  in which such  Property  is  located,  (e) any other lien or other
encumbrance  affecting title to such Property which can be removed  according to
its terms by  payment of a  liquidated  sum of money,  excluding  any such other
liens or  encumbrances  which  are (x)  identified  in  clauses  (a)-(d)  in the
definition  of  "Permitted  Exceptions"  or (y) are  required to be removed by a
tenant or other occupant under a Lease at such Property,  and (f) Post Effective
Date Encumbrances.

         "Nissan  Property"  shall  mean that  certain  improved  real  property
located in the City of Irving,  Dallas  County,  Texas,  together  with  certain
related personal and intangible property, being the Wells OP Property identified
as the  "Nissan  Property"  on  EXHIBIT  "A-1"  attached  hereto and made a part
hereof,  together  with the  related  Wells OP  Improvements,  Wells OP Personal
Property, and Wells OP Intangible Property, and all right, title and interest of
Wells OP as "landlord" or "lessor" in and to the Leases,  any  guaranties of the
Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.

         "Nissan  Quitclaim Deed" shall mean a quitclaim deed executed on behalf
of  Nissan  Motor  Acceptance  Corporation  confirming  the  termination  of the
repurchase option set forth in that certain vesting deed pursuant to which Wells
OP acquired the Nissan Property.

         "Opus Indemnity" shall mean the agreement of Opus South  Corporation to
indemnify Wells OP with respect to the "Retained Obligations" (including certain
corrective  work to the building slab at the  Pacificare  Property),  all as set
forth  (and as the term  "Retained  Obligations"  is  defined)  in that  certain
Assignment and Assumption of Lease and Certain Agreements,  dated July 12, 2002,
by and among Opus South Corporation, Opus Management Corporation and Wells OP.


                                       21

Purchase and Sale Agreement





         "Other  Notices of Sale"  shall have the  meaning  ascribed  thereto in
Section 5.1(ee) hereof.

         "Other  Third  Party  Estoppel  Certificate"  and  "Other  Third  Party
Estoppel  Certificates"  shall have the  meanings  set forth in  Section  4.3(i)
hereof.

         "Outstanding  ROFO/ROFR Party" shall mean Bank of America, NT & SA with
respect to the Bank of America Property.

         "Pacificare Escrow Agreement" shall mean that certain Escrow Agreement,
dated December 11, 2002,  among  PacifiCare  Health Systems,  Inc., Wells OP, as
"beneficiary", and Wells Fargo Bank, National Association as "escrow agent".

         "Pacificare  Property"  shall mean that certain  improved real property
located in San Antonio,  Bexar  County,  Texas,  together  with certain  related
personal and intangible property,  being the Wells OP Property identified as the
"Pacificare  Property" on EXHIBIT "A-1" attached  hereto and made a part hereof,
together with the related Wells OP Improvements, Wells OP Personal Property, and
Wells OP Intangible  Property,  and all right, title and interest of Wells OP as
"landlord"  or "lessor" in and to the Leases,  any  guaranties of the Leases and
the  Security  Deposits,  with  respect  to such  Wells  OP Land  and  Wells  OP
Improvements.

         "Permitted   Exceptions"  as  to  any   individual   Land  and  related
Improvements  shall mean,  collectively,  (a) liens for taxes,  assessments  and
governmental  charges  not yet due and  payable or due and  payable  but not yet
delinquent  with respect to such Land and related  Improvements,  (b) the Leases
affecting such Land and related  Improvements,  (c) such state of facts as would
be disclosed by a current  survey of such Land,  (d) the matters  identified  as
affecting such Land and related  Improvements on EXHIBIT "K" attached hereto and
made part hereof,  and (e) such other  easements,  restrictions and encumbrances
with  respect  to such  Land and  related  Improvements  that do not  constitute
Monetary Objections, and that are approved (or are deemed approved) by Purchaser
in accordance with the provisions of Section 3.4 hereof.  In addition,  the term
"Permitted Exceptions" as to the Kerr McGee Property shall also mean and include
the Kerr McGee  Sewer  Easement  substantially  in the form  attached  hereto as
EXHIBIT "Z" and made a part hereof;  and the term  "Permitted  Exceptions" as to
the  Capital  One  Property  shall also mean and  include  the  Capital One Lake
Easement Deed substantially in the form attached hereto as Exhibit "AA" and made
a part hereof.

         "Personal  Property" shall mean the Wells Affiliate  Personal  Property
and the Wells OP Personal Property.

         "Post Effective Date Encumbrances" shall mean all encumbrances to title
to the Properties,  other than the matters  identified in clauses (a)-(e) of the
definition of "Monetary  Objections"  which first  encumber  title to any of the
Properties by act or omission of Seller or any of Seller-Related Entities, which
act or  omission  was  committed  or accrued  after the  Effective  Date of this
Agreement and in violation or breach by any Seller or any Seller-Related  Entity
of this Agreement.


                                       22

Purchase and Sale Agreement





         "Property"  shall  mean  any  individual  Wells  OP  Property  or Wells
Affiliate Property.

         "Property  of such  Seller"  shall refer to the Wells OP Property as to
Wells OP, the AT&T (OK) Property as to Wells Fund XII - REIT JV, the Americredit
Property and the John Wiley Property as to Wells Fund XIII - REIT JV, the Alstom
Power Property as to Wells  Virginia  REIT,  the Bank of America  Property as to
Wells  Brea,  the  Daimler  Chrysler  Property  as to Wells  Westlake,  the Dana
(Farmington  Hills) Property as to Wells Farmington  Hills, the Dana (Kalamazoo)
Property as to Dana Kalamazoo, the EDS Property as to Wells EDS, and the Gartner
Office Building Property as to Wells Funds XI and XII - REIT JV.

         "Property Management  Agreement" and "Property  Management  Agreements"
shall mean any one or more of those  certain third party  management  agreements
more  particularly  described  on Exhibit  "Q"  attached  hereto and made a part
hereof.

         "Property  Manager" and "Property  Managers" shall mean any one or more
of the third party  property  managers  retained by Sellers to provide  property
management  services  with respect to the Property or  Properties of such Seller
pursuant to the Property Management Agreements described on the attached Exhibit
"Q".

         "Properties" shall mean the Wells OP Properties and the Wells Affiliate
Properties collectively.

         "Properties  of such Seller"  shall refer to the Wells OP Properties as
to Wells OP, and to the  Americredit  Property and the John Wiley Property as to
Wells Fund XIII - REIT JV.

         "Purchase Price" shall be the amount specified in Section 2.5 hereof.

         "Purchaser-Related Entities" shall have the meaning ascribed thereto in
Section 11.1 hereof.

         "Purchaser-Waived  Breach" shall have the meaning  ascribed  thereto in
Section 11.3 hereof.

         "Purchaser's  Certificate"  shall have the meaning  ascribed thereto in
Section 5.2(p) hereof.

         "Purchaser's  Counsel"  shall mean Paul,  Hastings,  Janofsky & Walker,
LLP, 75 East 55th  Street,  New York,  New York 10022,  Attention:  Katherine B.
Lipton.

         "Purchaser's  Title  Commitment" and  "Purchaser's  Title  Commitments"
shall have the meanings ascribed thereto in Section 3.4 hereof.

         "Real Estate  Transfer Tax" and "Real Estate Transfer Taxes" shall mean
the  transfer  tax,  excise tax,  documentary  stamp tax or similar tax (however
denominated)  which may be imposed by the state,  county and/or  municipality in
which each applicable Property is located


                                       23

Purchase and Sale Agreement





and be  payable  in  connection  with the  conveyance  of such  Property  by the
applicable Seller to Purchaser hereunder.

         "Right  of Entry  Agreement"  shall  mean that  certain  Right of Entry
Agreement, dated as of December 29, 2004 (as amended), between and among Sellers
and Purchaser.

         "ROFO/ROFR  Endorsement"  shall have the  meaning  ascribed  thereto in
Section 2.7(b) hereof.

         "ROFO/ROFR  Party" and  "ROFO/FOFR  Parties"  shall  have the  meanings
ascribed thereto in Section 4.1(f) hereof.

         "ROFO/ROFR  Rights" shall have the meaning  ascribed thereto in Section
2.7(b) hereof.

         "SEC" shall mean the Securities and Exchange Commission.

         "Security  Deposits" shall mean,  with respect to the  Properties,  any
security  deposits,  rent or damage deposits or similar amounts (other than rent
paid for the month in which the Closing occurs) actually held by Wells OP or the
applicable  Wells  Affiliate  with respect to any of the Leases  affecting  each
Property owned by Wells OP or such Wells Affiliate.

         "Seller-Related  Entities" shall have the meaning  ascribed  thereto in
Section 11.2 hereof.

         "Seller's  Affidavit"  shall mean the form of owner's  affidavit  to be
given  by each of the  Sellers  at  Closing  to the  Title  Company  in the form
attached hereto as SCHEDULE 13.

         "Seller's  Certificate"  shall  mean  the  form  of  certificate  to be
executed  and  delivered by each of the Sellers to Purchaser at the Closing with
respect  to  the  truth  and   accuracy   of  such   Seller's   warranties   and
representations  contained  in  this  Agreement  (modified  and  updated  as the
circumstances require), in the form attached hereto as SCHEDULE 14.

         "Seller's  Counsel"  shall mean  Troutman  Sanders LLP, Bank of America
Plaza,  Suite 5200, 600 Peachtree Street,  N.E.,  Atlanta,  Georgia  30308-2216,
Attention: John W. Griffin and Leslie Fuller Secrest.

         "Seller's  Estoppel"  and  "Sellers'  Estoppels"  shall  mean  estoppel
certificates in the forms attached hereto as SCHEDULE 16 and made a part hereof,
which  may  be  executed  and  delivered  by  certain   Sellers  at  Closing  as
contemplated in Sections 6.1(g) and 6.1(h) hereof.

         "Seller's Partial  Termination  Notice" shall have the meaning ascribed
thereto in Section 6.2(d) hereof.

         "Seller's Title Commitment" and "Sellers' Title Commitments" shall have
the meanings ascribed thereto in Section 3.4 hereof.


                                       24

Purchase and Sale Agreement





         "Service  Contracts" shall mean with respect to each applicable  Seller
all those  certain  contracts  and  agreements  more  particularly  described as
Service Contracts on EXHIBIT "L" attached hereto and made a part hereof relating
to the repair,  maintenance or operation of the Land,  Improvements  or Personal
Property  owned by such  Seller  which  will  extend  beyond the  Closing  Date,
including, without limitation, all equipment leases, and including those certain
service  agreements in the process of being  completed and executed as described
on the attached  Exhibit "L", so long as the same shall be terminable on no more
than thirty (30) days' notice, and without payment of penalty or premium.

         "SNDA" and "SNDAs" shall have the meanings  ascribed thereto in Section
4.3(k) hereof.

         "Subsequent  Title Notice" shall have the meaning  ascribed  thereto in
Section 3.4 hereof.

         "Survey"  and  "Surveys"  shall have the  meaning  ascribed  thereto in
Section 3.4 hereof.

         "Tax Abatement  Agreement" and "Tax  Abatement  Agreements"  shall mean
each and any one or more of the following:

                  (a)      with  respect  to the Kerr McGee  Property,  (i) that
certain Tax Abatement  Agreement,  dated on or about May 6, 2003, among the City
of Houston,  Texas,  Wells OP, Kerr-McGee Oil & Gas Onshore,  LLC and Kerr-McGee
Oil & Gas  Corporation,  and (b) that certain Tax  Abatement  Agreement for Real
Property  Located in the Kerr-McGee Oil & Gas  Reinvestment  Zone,  dated May 6,
2003, among Harris County, the Harris County Flood Control District,  the Harris
County  Hospital   District,   the  Port  Authority  of  Harris  County,   Texas
(collectively as the "County"),  Wells OP,  Kerr-McGee Oil & Gas Onshore LLC and
Kerr-McGee Oil & Gas Corporation;

                  (b)      with respect to the Pacificare Property, that certain
Tax Phase-In  Agreement  with the City of Antonio,  dated April 12, 2000,  among
PacifiCare Health Systems, Incorporated,  Opus South Corporation and the City of
San Antonio, Texas.

         "Taxes"  shall have the  meaning  ascribed  thereto  in Section  5.4(a)
hereof.

         "Tenant Estoppel  Certificate" or "Tenant Estoppel  Certificates" shall
mean   certificates   to  be  sought  from  the  tenants  under  the  Leases  in
substantially the form attached hereto as EXHIBIT "M"; provided, however, if any
Lease  provides  for the form or content  of an  estoppel  certificate  from the
tenant  thereunder,  the Tenant Estoppel  Certificate with respect to such Lease
may be in the form as called for therein.

         "Tenant  Inducement  Costs"  shall  mean  any  out-of-pocket   payments
required  under a Lease  to be paid  by the  landlord  thereunder  to or for the
benefit of the tenant thereunder which is in the nature of a tenant  inducement,
including specifically,  but without limitation, tenant improvement costs, lease
buyout payments, and moving, design, refurbishment and club


                                       25

Purchase and Sale Agreement





membership  allowances and costs. The term "Tenant  Inducement  Costs" shall not
include  loss of  income  resulting  from  any  free  rental  period,  it  being
understood and agreed that the Seller of the applicable  Property shall bear the
loss  resulting  from any free rental  period  until the  Closing  Date and that
Purchaser shall bear such loss from and after the Closing Date.

         "Tenant  Notices of Sale"  shall have the meaning  ascribed  thereto in
Section 5.1(cc) hereof.

         "Title Company" shall mean Chicago Title Insurance Company.

         "Title  Commitment"  and "Title  Commitments"  shall have the  meanings
ascribed thereto in Section 3.4 hereof.

         "Transfer  Fees"  shall  mean  the  fee(s),  if  any,  charged  by  the
respective  issuers of the Letters of Credit to  transfer  the Letters of Credit
from the applicable Sellers to Purchaser as the beneficiary thereof.

         "Transocean  Property"  shall mean that certain  improved real property
located in Harris  County,  Texas,  together with certain  related  personal and
intangible  property,  being the Wells OP Property identified as the "Transocean
Property" on EXHIBIT "A-1" attached hereto and made a part hereof, together with
the related  Wells OP  Improvements,  Wells OP Personal  Property,  and Wells OP
Intangible Property, and all right, title and interest of Wells OP as "landlord"
or "lessor" in and to the Leases,  any guaranties of the Leases and the Security
Deposits, with respect to such Wells OP Land and Wells OP Improvements.

         "Travelers  Express  Property"  shall mean that certain  improved  real
property located in Lakewood,  Jefferson County, Colorado, together with certain
related personal and intangible property, being the Wells OP Property identified
as the "Travelers  Express Property" on EXHIBIT "A-1" attached hereto and made a
part hereof, together with the related Wells OP Improvements,  Wells OP Personal
Property, and Wells OP Intangible Property, and all right, title and interest of
Wells OP as "landlord" or "lessor" in and to the Leases,  any  guaranties of the
Leases and the Security  Deposits,  with respect to such Wells OP Land and Wells
OP Improvements.

         "Wells Affiliate" and "Wells Affiliates" shall mean each and any one or
more of Wells  Funds XII - REIT JV,  Wells Fund XIII - REIT JV,  Wells  Virginia
REIT, Wells Brea, Wells Westlake, Wells Farmington Hills, Wells Kalamazoo, Wells
EDS and Wells Funds XI and XII REIT JV.

         "Wells Affiliate Improvements" shall mean all buildings, structures and
improvements  now or on the Closing Date situated on the Wells Affiliate  Lands,
including without limitation, all parking areas and facilities, improvements and
fixtures located on the Wells Affiliate Lands.

         "Wells  Affiliate   Intangible  Property"  shall  mean  all  intangible
property,  if any, owned by each  applicable  Wells Affiliate and related to the
Wells  Affiliate  Land and  Wells  Affiliate  Improvements  owned by such  Wells
Affiliate, including without limitation, the rights and


                                       26

Purchase and Sale Agreement





interests,  if any,  of each Wells  Affiliate  in and to the  following  (to the
extent  assignable):  (i) all  assignable  plans  and  specifications  and other
architectural  and engineering  drawings for the Wells Affiliate Lands and Wells
Affiliate  Improvements;  (ii) all assignable  warranties or guaranties given or
made in respect of the Wells Affiliate  Improvements or Wells Affiliate Personal
Property; (iii) all transferable consents, authorizations, variances or waivers,
licenses,  permits and approvals  from any  governmental  or  quasi-governmental
agency, department, board, commission, bureau or other entity or instrumentality
solely in respect of the Wells Affiliate Lands or Wells Affiliate  Improvements;
and (iv) all of the right, title and interest of each applicable Wells Affiliate
in and to all assignable  Service  Contracts with respect to the Wells Affiliate
Properties  owned by each such Wells  Affiliate that Purchaser  agrees to assume
(or is deemed to have agreed to assume).

         "Wells  Affiliate  Lands" shall mean those certain tracts or parcels of
real property which are more  particularly  identified on EXHIBIT "A-2" attached
hereto as the Alstom  Power  Property,  the  AmeriCredit  Property,  the Bank of
America Property,  the Daimler Chrysler  Property,  the Dana (Farmington  Hills)
Property,  the AT&T  (OK)  Property,  the  Dana  (Kalamazoo)  Property,  the EDS
Property,  the Gartner  Office  Building  Property and the John Wiley  Property,
together with all rights,  privileges and easements  appurtenant to each of said
real properties,  and all right, title and interest,  if any, of each applicable
Wells Affiliate in and to any land lying in the bed of any street,  road,  alley
or  right-of-way,  open or closed,  adjacent to or abutting the Wells  Affiliate
Land owned by such Wells Affiliate.

         "Wells Affiliate Personal Property" shall mean all furniture (including
common area furnishings and interior landscaping items),  carpeting,  draperies,
appliances,  personal property  (excluding the computer software which either is
licensed to a Wells Affiliate or which such Wells Affiliate deems proprietary [a
listing  of such  excluded  computer  software  being set forth on  EXHIBIT  "W"
attached  hereto and made a part  hereof]),  machinery,  apparatus and equipment
owned by each Wells  Affiliate and currently used  exclusively in the operation,
repair  and  maintenance  of  the  Wells  Affiliate  Land  and  Wells  Affiliate
Improvements  owned by such Wells  Affiliate  and situated  thereon,  including,
without  limitation,  those  specific  items of personal  property (if any) more
particularly  described on EXHIBIT "B"  attached  hereto and made a part hereof,
and all  non-confidential  books,  records and files  (excluding any appraisals,
budgets, strategic plans for the Wells Affiliate Properties,  internal analyses,
information  regarding the marketing of the Wells Affiliate Properties for sale,
submissions  relating to  obtaining  of  corporate  authorization  for any Wells
Affiliate,  attorney and  accountant  work product,  attorney-client  privileged
documents,  or other  similar  information  in the  possession or control of any
Wells  Affiliate  or any Wells  Affiliate  property  manager  which  such  Wells
Affiliate  reasonably deems  proprietary)  relating to the Wells Affiliate Lands
and Wells  Affiliate  Improvements  owned by each  applicable  Wells  Affiliate;
provided,  however,  the property described on EXHIBIT "B-2" attached hereto and
made a part hereof is expressly  excluded from the definition of Wells Affiliate
Personal  Property.  The Wells Affiliate  Personal Property does not include any
property owned by tenants,  contractors  or licensees,  and shall be conveyed by
each applicable Wells Affiliate to Purchaser subject to depletions, replacements
and additions in the ordinary course of such Wells Affiliate's business.


                                       27

Purchase and Sale Agreement





         "Wells Affiliate  Property" shall mean and refer to any Wells Affiliate
Land,  together  with the items set forth in Section  2.1(b),  (c),  (d) and (e)
hereof with respect to such Wells Affiliate Land.

         "Wells Affiliate Properties" shall have the meaning ascribed thereto in
Section 2.1 hereof.

         "Wells  Brea"  shall  mean  Wells  Brea I,  L.P.,  a  Delaware  limited
partnership.

         "Wells Brea  Improvements"  shall mean all  buildings,  structures  and
improvements  now or on the  Closing  Date  situated  on the  Wells  Brea  Land,
including,  without limitation,  all parking areas and facilities,  improvements
and fixtures located on such Wells Brea Land.

         "Wells Brea Intangible Property" shall mean all intangible property, if
any,  owned by Wells  Brea and  related  to the Wells  Brea Land  identified  on
EXHIBIT "A-2" as the Bank of America Property and to the Wells Brea Improvements
located on the Wells Brea Land,  including,  without limitation,  the rights and
interests,  if any, in and to the following (to the extent assignable):  (i) all
assignable  plans and  specifications  and other  architectural  and engineering
plans for such Wells Brea Land and the Wells Brea Improvements  located thereon;
(ii) all  assignable  warranties or  guaranties  given or made in respect of the
Wells Brea Improvements or Wells Brea Personal Property;  (iii) all transferable
consents, authorizations,  variances or waivers, licenses, permits and approvals
from  any  governmental  or  quasi-governmental   agency,   department,   board,
commission,  bureau or other entity or instrumentality  solely in respect of the
Wells Brea Land or Wells Brea Improvements  located thereon; and (iv) all of the
right,  title  and  interest  of  Wells  Brea in and to all  assignable  Service
Contracts  with  respect to the Wells Brea  Property  that  Purchaser  agrees to
assume (or is deemed to have agreed to assume).

         "Wells  Brea Land" shall mean those  certain  tracts or parcels of real
property more particularly described on EXHIBIT "A-2" attached hereto and made a
part hereof as the Bank of America Property.

         "Wells Brea  Personal  Property"  shall mean all  furniture  (including
common area furnishings and interior landscaping items),  carpeting,  draperies,
appliances,  personal property  (excluding the computer software which is either
licensed  to Wells Brea or which  such  Wells  Affiliate  deems  proprietary  [a
listing  of such  excluded  computer  software  being set forth on  EXHIBIT  "W"
attached  hereto and made a part  hereof]),  machinery,  apparatus and equipment
owned by such Wells  Affiliate and currently used  exclusively in the operation,
repair and  maintenance of the Wells Brea Land and Wells Brea  Improvements  and
owned  by  such  Wells  Affiliate  and  situated  thereon,  including,   without
limitation, those specific items of personal property (if any) more particularly
described  on  EXHIBIT  "B"  attached  hereto  and made a part  hereof,  and all
non-confidential  books,  records and files (excluding any appraisals,  budgets,
strategic  plans for such Wells Brea Property,  internal  analyses,  information
regarding  the  marketing  of the Wells  Brea  Property  for  sale,  submissions
relating to obtaining of corporate  authorization  for Wells Brea,  attorney and
accountant work product,  attorney-client privileged documents, or other similar
information  in the  possession  or  control  of Wells  Brea or any third  party
property  manager  which  such Wells  Affiliate  reasonably  deems  proprietary)
relating to the


                                       28

Purchase and Sale Agreement





Wells Brea Land and Wells Brea  Improvements;  provided,  however,  the property
described on EXHIBIT "B-2"  attached  hereto and made a part hereof is expressly
excluded from the  definition of Wells Brea  Personal  Property.  The Wells Brea
Personal Property does not include any property owned by tenants, contractors or
licensees,  and  shall  be  conveyed  by  Wells  Brea to  Purchaser  subject  to
depletions,  replacements  and additions in the ordinary  course of Wells Brea's
business.

         "Wells  Brea  Property"  shall  mean and refer to the Wells  Brea Land,
together  with the items set forth in  Sections  2.1(b),  (c),  (d) and (e) with
respect to the Wells Brea Land.

         "Wells EDS" shall mean Wells - EDS Des Moines,  L.P.,  a Texas  limited
partnership.

         "Wells EDS  Improvements"  shall  mean all  buildings,  structures  and
improvements  now  or on the  Closing  Date  situated  on the  Wells  EDS  Land,
including,  without limitation,  all parking areas and facilities,  improvements
and fixtures located on such Wells EDS Land.

         "Wells EDS Intangible Property" shall mean all intangible property,  if
any, owned by Wells EDS and related to the Wells EDS Land  identified on EXHIBIT
"A-2" as the EDS Property and to the Wells EDS Improvements located on the Wells
EDS Land, including,  without limitation,  the rights and interests,  if any, in
and to the following (to the extent  assignable):  (i) all assignable  plans and
specifications and other  architectural and engineering plans for such Wells EDS
Land and the  Wells  EDS  Improvements  located  thereon;  (ii)  all  assignable
warranties or guaranties  given or made in respect of the Wells EDS Improvements
or Wells EDS Personal Property; (iii) all transferable consents, authorizations,
variances or waivers,  licenses,  permits and approvals from any governmental or
quasi-governmental agency, department, board, commission, bureau or other entity
or  instrumentality  solely  in  respect  of the  Wells  EDS Land or  Wells  EDS
Improvements  located thereon;  and (iv) all of the right, title and interest of
Wells EDS in and to all assignable  Service  Contracts with respect to the Wells
EDS  Property  that  Purchaser  agrees to assume (or is deemed to have agreed to
assume).

         "Wells EDS Land"  shall mean  those  certain  tracts or parcels of real
property more particularly described on EXHIBIT "A-2" attached hereto and made a
part hereof as the EDS Property.

         "Wells  EDS  Personal  Property"  shall mean all  furniture  (including
common area furnishings and interior landscaping items),  carpeting,  draperies,
appliances,  personal property  (excluding the computer software which is either
licensed to Wells EDS or which such Wells Affiliate deems proprietary [a listing
of such  excluded  computer  software  being set forth on EXHIBIT  "W"  attached
hereto and made a part  hereof]),  machinery,  apparatus and equipment  owned by
such Wells Affiliate and currently used exclusively in the operation, repair and
maintenance of the Wells EDS Land and Wells EDS  Improvements  and owned by such
Wells  Affiliate and situated  thereon,  including,  without  limitation,  those
specific  items of personal  property  (if any) more  particularly  described on
EXHIBIT "B"  attached  hereto and made a part hereof,  and all  non-confidential
books, records and files (excluding any appraisals, budgets, strategic plans for
such Wells EDS Property, internal analyses,  information regarding the marketing
of the Wells EDS  Property  for  sale,  submissions  relating  to  obtaining  of
corporate


                                       29

Purchase and Sale Agreement





authorization   for  Wells  EDS,   attorney   and   accountant   work   product,
attorney-client  privileged  documents,  or  other  similar  information  in the
possession  or control of Wells EDS or any third party  property  manager  which
such Wells Affiliate  reasonably  deems  proprietary)  relating to the Wells EDS
Land and Wells EDS Improvements;  provided,  however,  the property described on
EXHIBIT "B-2" attached hereto and made a part hereof is expressly  excluded from
the definition of Wells EDS Personal  Property.  The Wells EDS Personal Property
does not include any property owned by tenants,  contractors  or licensees,  and
shall be conveyed by Wells EDS to Purchaser subject to depletions,  replacements
and additions in the ordinary course of Wells EDS's business.

         "Wells  EDS  Property"  shall  mean and  refer to the  Wells  EDS Land,
together  with the items  set forth in  Section  2.1(b),  (c),  (d) and (e) with
respect to the Wells EDS Land.

         "Wells  Farmington  Hills"  shall mean Danacq  Farmington  Hills LLC, a
Delaware limited liability company.

         "Wells  Farmington  Hills   Improvements"  shall  mean  all  buildings,
structures  and  improvements  now or on the Closing Date  situated on the Wells
Farmington  Hills Land,  including,  without  limitation,  all parking areas and
facilities,  improvements  and fixtures  located on such Wells  Farmington Hills
Land.

         "Wells Farmington Hills Intangible  Property" shall mean all intangible
property,  if any,  owned by Wells  Farmington  Hills and  related  to the Wells
Farmington Hills Land identified on EXHIBIT "A-2" as the Dana (Farmington Hills)
Property and to the Wells  Farmington  Hills  Improvements  located on the Wells
Farmington Hills Land, including,  without limitation, the rights and interests,
if any, in and to the following (to the extent  assignable):  (i) all assignable
plans and specifications and other  architectural and engineering plans for such
Wells Farmington Hills Land and the Wells Farmington Hills Improvements  located
thereon;  (ii) all assignable  warranties or guaranties given or made in respect
of the Wells  Farmington  Hills  Improvements or Wells Farmington Hills Personal
Property; (iii) all transferable consents, authorizations, variances or waivers,
licenses,  permits and approvals  from any  governmental  or  quasi-governmental
agency, department, board, commission, bureau or other entity or instrumentality
solely in respect of the Wells  Farmington  Hills Land or Wells Farmington Hills
Improvements  located thereon;  and (iv) all of the right, title and interest of
Wells Farmington Hills in and to all assignable  Service  Contracts with respect
to the Wells  Farmington  Hills Property that Purchaser  agrees to assume (or is
deemed to have agreed to assume).

         "Wells  Farmington  Hills Land" shall mean that certain tract or parcel
of real property more  particularly  described on EXHIBIT "A-2" attached  hereto
and made a part hereof as the Dana (Farmington Hills) Property.

         "Wells  Farmington  Hills Personal  Property"  shall mean all furniture
(including common area furnishings and interior  landscaping items),  carpeting,
draperies,  appliances, personal property (excluding the computer software which
is either licensed to Wells Farmington Hills or which such Wells Affiliate deems
proprietary  [a listing of such excluded  computer  software  being set forth on
EXHIBIT "W" attached hereto and made a part hereof]), machinery,


                                       30

Purchase and Sale Agreement





apparatus  and  equipment  owned by such  Wells  Affiliate  and  currently  used
exclusively in the  operation,  repair and  maintenance of the Wells  Farmington
Hills  Land and Wells  Farmington  Hills  Improvements  and owned by such  Wells
Affiliate and situated thereon,  including,  without limitation,  those specific
items of personal property (if any) more  particularly  described on EXHIBIT "B"
attached hereto and made a part hereof, and all non-confidential  books, records
and files  (excluding any  appraisals,  budgets,  strategic plans for such Wells
Farmington  Hills  Property,   internal  analyses,   information  regarding  the
marketing of the Wells Farmington Hills Property for sale,  submissions relating
to obtaining of corporate authorization for Wells Farmington Hills, attorney and
accountant work product,  attorney-client privileged documents, or other similar
information in the possession or control of Wells  Farmington Hills or any third
party property manager which such Wells Affiliate  reasonably deems proprietary)
relating  to  the  Wells  Farmington  Hills  Land  and  Wells  Farmington  Hills
Improvements;  provided,  however,  the  property  described  on  EXHIBIT  "B-2"
attached hereto and made a part hereof is expressly excluded from the definition
of Wells Farmington Hills Personal Property. The Wells Farmington Hills Personal
Property  does not  include  any  property  owned  by  tenants,  contractors  or
licensees,  and shall be conveyed by Wells Farmington Hills to Purchaser subject
to  depletions,  replacements  and  additions  in the  ordinary  course of Wells
Farmington Hills' business.

         "Wells  Farmington  Hills  Property"  shall mean and refer to the Wells
Farmington  Hills Land,  together  with the items set forth in Sections  2.1(b),
(c), (d) and (e) with respect to the Wells Farmington Hills Land.

         "Wells  Fund XII - REIT JV"  shall  mean  Wells  Fund XII - REIT  Joint
Venture Partnership, a Georgia general partnership.

         "Wells  Fund XII - REIT JV  Improvements"  shall  mean  all  buildings,
structures  and  improvements  now  or on  the  Closing  Date  situated  on  the
applicable  Wells Fund XII - REIT JV Land  including,  without  limitation,  all
parking areas and facilities,  improvements  and fixtures  located on such Wells
Fund XII - REIT JV Land.

         "Wells  Fund  XII  -  REIT  JV  Intangible  Property"  shall  mean  all
intangible  property,  if any,  owned by Wells XII - REIT JV and  related to the
Wells  Fund XII - REIT JV Land  identified  on  EXHIBIT  "A-2" as the AT&T  (OK)
Property  and to the Wells Fund XII - REIT JV  Improvements  located on the AT&T
(OK) Property,  including, without limitation, the rights and interests, if any,
in and to the following (to the extent assignable): (i) all assignable plans and
specifications and other architectural and engineering plans for such Wells Fund
XII - REIT JV Land and the Wells Fund XII - REIT JV Improvements located on such
land; (ii) all assignable  warranties or guaranties  given or made in respect of
the Wells Fund XII - REIT JV  Improvements  or Wells Fund XII - REIT JV Personal
Property; (iii) all transferable consents, authorizations, variances or waivers,
licenses,  permits and approvals  from any  governmental  or  quasi-governmental
agency, department, board, commission, bureau or other entity or instrumentality
solely in  respect  of such Wells Fund XII - REIT JV Land or Wells Fund XII - JV
Improvements  located thereon;  and (iv) all of the right, title and interest of
Wells  Funds  XII - REIT  JV in and to all  assignable  Service  Contracts  with
respect to the Wells Fund XII - REIT JV Property that Purchaser agrees to assume
(or is deemed to have agreed to assume).


                                       31

Purchase and Sale Agreement





         "Wells Fund XII - REIT JV Land" shall mean that certain tract or parcel
of real property more  particularly  described on EXHIBIT "A-2" attached  hereto
and made a part hereof as the AT&T (OK) Property.

         "Wells Fund XII - REIT JV Personal  Property"  shall mean all furniture
(including common area furnishings and interior  landscaping items),  carpeting,
draperies,  appliances, personal property (excluding the computer software which
is either  licensed  to Wells Fund XII - REIT JV or which  such Wells  Affiliate
deems  proprietary [a listing of such excluded computer software being set forth
on EXHIBIT "W" attached  hereto and made a part hereof]),  machinery,  apparatus
and equipment  owned by such Wells  Affiliate and currently used  exclusively in
the operation,  repair and  maintenance of the Wells Fund XII - REIT JV Land and
Wells  Fund XII - REIT JV  Improvements  and owned by such Wells  Affiliate  and
situated  thereon,  including,  without  limitation,  those  specific  items  of
personal property (if any) more  particularly  described on EXHIBIT "B" attached
hereto and made a part hereof, and all non-confidential books, records and files
(excluding any  appraisals,  budgets,  strategic  plans for the Wells Fund XII -
REIT JV Property, internal analyses,  information regarding the marketing of the
Wells Fund XII - REIT JV Property for sale, submissions relating to obtaining of
corporate  authorization  for Wells Fund XII - REIT JV,  attorney and accountant
work product, attorney-client privileged documents, or other similar information
in the  possession  or control  of Wells  Fund XII - REIT JV or any third  party
property  manager  which  such Wells  Affiliate  reasonably  deems  proprietary)
relating  to the  Wells  Fund  XII - REIT JV Land and  Wells  Fund XII - REIT JV
Improvements;  provided,  however,  the  property  described  on  EXHIBIT  "B-2"
attached hereto and made a part hereof is expressly excluded from the definition
of Wells  Fund XII - REIT JV  Personal  Property.  The Wells  Fund XII - REIT JV
Personal Property does not include any property owned by tenants, contractors or
licensees,  and  shall  be  conveyed  by Wells  Fund XII - REIT JV to  Purchaser
subject to  depletions,  replacements  and  additions in the ordinary  course of
Wells XII - REIT JV's business.

         "Wells Fund XII - REIT JV  Property"  shall mean and refer to the Wells
Fund XII - REIT JV Land,  together with the items set forth in Sections  2.1(b),
(c), (d) and (e) with respect to the Wells Fund XII - REIT JV Land.

         "Wells  Fund XIII - REIT JV" shall  mean  Wells  Fund XIII - REIT Joint
Venture Partnership, a Georgia general partnership.

         "Wells  Fund XIII - REIT JV  Improvements"  shall  mean all  buildings,
structures and improvements  now or on the Closing Date situated,  respectively,
on  the  applicable  Wells  Fund  XIII  -  REIT  JV  Lands,  including,  without
limitation, all parking areas and facilities,  improvements and fixtures located
on such Wells Fund XIII - REIT JV Lands.

         "Wells  Fund  XIII  - REIT  JV  Intangible  Property"  shall  mean  all
intangible  property,  if  any,  owned  by  Wells  XIII - REIT  JV and  related,
respectively,  to the Wells Fund XIII - REIT JV Land identified on EXHIBIT "A-2"
as the  Americredit  Property and the John Wiley  Property and to the Wells Fund
XIII - REIT JV Improvements located respectively on the Americredit Property and
the  John  Wiley  Property,   including,  without  limitation,  the  rights  and
interests,  if any, in and to the following (to the extent assignable):  (i) all
assignable plans and specifications


                                       32

Purchase and Sale Agreement





and other architectural and engineering plans for such Wells Fund XIII - REIT JV
Land and the Wells Fund XIII - REIT JV  Improvements  located on such land; (ii)
all  assignable  warranties  or  guaranties  given  or  made in  respect  of the
applicable  Wells Fund XIII - REIT JV  Improvements or Wells Fund XIII - REIT JV
Personal Property; (iii) all transferable consents, authorizations, variances or
waivers,   licenses,   permits   and   approvals   from  any   governmental   or
quasi-governmental agency, department, board, commission, bureau or other entity
or instrumentality  solely in respect of such Wells Fund XIII - REIT JV Lands or
Wells Fund XIII - JV Improvements  located  thereon;  and (iv) all of the right,
title  and  interest  of  Wells  Funds  XIII - REIT JV in and to all  assignable
Service  Contracts  with  respect  to  each of such  Wells  Fund  XIII - REIT JV
Properties  owned by Wells Fund XIII - REIT JV that  Purchaser  agrees to assume
(or is deemed to have agreed to assume).

         "Wells  Fund XIII - REIT JV Land" and "Wells Fund XIII - REIT JV Lands"
shall mean those certain  tracts or parcels of real  property more  particularly
and  respectively  described on EXHIBIT  "A-2"  attached  hereto and made a part
hereof as the Americredit Property and the John Wiley Property.

         "Wells Fund XIII - REIT JV Personal  Property" shall mean all furniture
(including common area furnishings and interior  landscaping items),  carpeting,
draperies,  appliances, personal property (excluding the computer software which
is either  licensed  to Wells Fund XIII - REIT JV or which such Wells  Affiliate
deems  proprietary [a listing of such excluded computer software being set forth
on EXHIBIT "W" attached  hereto and made a part hereof]),  machinery,  apparatus
and equipment  owned by such Wells  Affiliate and currently used  exclusively in
the operation, repair and maintenance of either of the Wells Fund XIII - REIT JV
Lands  and  Wells  Fund  XIII - REIT JV  Improvements  and  owned by such  Wells
Affiliate and situated thereon,  including,  without limitation,  those specific
items of personal property (if any) more  particularly  described on EXHIBIT "B"
attached hereto and made a part hereof, and all non-confidential  books, records
and files  (excluding any  appraisals,  budgets,  strategic plans for such Wells
Fund XIII - REIT JV Properties,  internal  analyses,  information  regarding the
marketing  of the Wells  Fund XIII - REIT JV  Properties  for sale,  submissions
relating to obtaining of corporate  authorization for Wells Fund XIII - REIT JV,
attorney and accountant work product,  attorney-client  privileged documents, or
other similar information in the possession or control of Wells Fund XIII - REIT
JV or any third party  property  manager which such Wells  Affiliate  reasonably
deems  proprietary)  relating  to the Wells  Fund XIII - REIT JV Lands and Wells
Fund XIII - REIT JV Improvements;  provided,  however, the property described on
EXHIBIT "B-2" attached hereto and made a part hereof is expressly  excluded from
the  definition of Wells Fund XIII - REIT JV Personal  Property.  The Wells Fund
XIII - REIT JV Personal Property does not include any property owned by tenants,
contractors or licensees,  and shall be conveyed by Wells Fund XIII - REIT JV to
Purchaser  subject to  depletions,  replacements  and  additions in the ordinary
course of Wells XIII - REIT JV's business.

         "Wells Fund XIII - REIT JV Property"  shall mean and refer to the Wells
Fund XIII - REIT JV Lands, together with the items set forth in Sections 2.1(b),
(c), (d) and (e) with respect to such Wells Fund XIII - REIT JV Land.


                                       33

Purchase and Sale Agreement





         "Wells  Funds XI and XII REIT JV" shall mean The Wells  Funds XI - Fund
XII - REIT Joint Venture Partnership, a Georgia general partnership.

         "Wells Funds XI and XII REIT JV Improvements" shall mean all buildings,
structures  and  improvements  now or on the Closing Date  situated on the Wells
Funds XI and XII REIT JV Land, including,  without limitation, all parking areas
and facilities, improvements and fixtures located on such Wells Funds XI and XII
REIT JV Land.

         "Wells  Funds XI and XII REIT JV  Intangible  Property"  shall mean all
intangible property, if any, owned by Wells Funds XI and XII REIT JV and related
to the Wells Funds XI and XII REIT JV Land  identified  on EXHIBIT  "A-2" as the
Gartner Property and to the Wells Funds XI and XII REIT JV Improvements  located
on the Wells Funds XI and XII REIT JV Land, including,  without limitation,  the
rights  and  interests,  if  any,  in  and  to  the  following  (to  the  extent
assignable): (i) all assignable plans and specifications and other architectural
and engineering plans for such Wells Funds XI and XII REIT JV Land and the Wells
Funds XI and XII  REIT JV  Improvements  located  thereon;  (ii) all  assignable
warranties or guaranties  given or made in respect of the Wells Funds XI and XII
REIT JV Improvements or Wells Funds XI and XII REIT JV Personal Property;  (iii)
all  transferable  consents,  authorizations,  variances  or waivers,  licenses,
permits  and  approvals  from any  governmental  or  quasi-governmental  agency,
department,  board, commission, bureau or other entity or instrumentality solely
in respect of the Wells  Funds XI and XII REIT JV Land or Wells Funds XI and XII
REIT JV  Improvements  located  thereon;  and (iv) all of the  right,  title and
interest  of Wells  Funds XI and XII  REIT JV in and to all  assignable  Service
Contracts  with  respect  to the Wells  Funds XI and XII REIT JV  Property  that
Purchaser agrees to assume (or is deemed to have agreed to assume).

         "Wells Funds XI and XII REIT JV Land" shall mean those  certain  tracts
or  parcels of real  property  more  particularly  described  on  EXHIBIT  "A-2"
attached hereto and made a part hereof as the Gartner Property.

         "Wells  Funds  XI and XII REIT JV  Personal  Property"  shall  mean all
furniture  (including common area furnishings and interior  landscaping  items),
carpeting,  draperies,  appliances,  personal  property  (excluding the computer
software  which is either  licensed  to Wells  Funds XI and XII REIT JV or which
such Wells  Affiliate  deems  proprietary  [a listing of such excluded  computer
software  being  set  forth  on  EXHIBIT  "W"  attached  hereto  and made a part
hereof]),  machinery,  apparatus and equipment owned by such Wells Affiliate and
currently used exclusively in the operation, repair and maintenance of the Wells
Funds XI and XII REIT JV Land and  Wells  Funds XI and XII REIT JV  Improvements
and owned by such Wells  Affiliate  and  situated  thereon,  including,  without
limitation, those specific items of personal property (if any) more particularly
described  on  EXHIBIT  "B"  attached  hereto  and made a part  hereof,  and all
non-confidential  books,  records and files (excluding any appraisals,  budgets,
strategic  plans  for such  Wells  Funds XI and XII REIT JV  Property,  internal
analyses, information regarding the marketing of the Wells Funds XI and XII REIT
JV  Property   for  sale,   submissions   relating  to  obtaining  of  corporate
authorization  for Wells Funds XI and XII REIT JV,  attorney and accountant work
product,  attorney-client  privileged documents, or other similar information in
the  possession  or control of Wells Funds XI and XII REIT JV or any third party
property  manager  which  such Wells  Affiliate  reasonably  deems  proprietary)
relating  to the Wells  Funds


                                       34

Purchase and Sale Agreement





XI and  XII  REIT JV Land  and  Wells  Funds  XI and XII  REIT JV  Improvements;
provided,  however,  the property described on EXHIBIT "B-2" attached hereto and
made a part hereof is expressly  excluded from the  definition of Wells Funds XI
and XII REIT JV Personal  Property.  The Wells Funds XI and XII REIT JV Personal
Property  does not  include  any  property  owned  by  tenants,  contractors  or
licensees,  and shall be conveyed by Wells Funds XI and XII REIT JV to Purchaser
subject to  depletions,  replacements  and  additions in the ordinary  course of
Wells Funds XI and XII REIT JV's business.

         "Wells Funds XI and XII REIT JV  Property"  shall mean and refer to the
Wells  Funds XI and XII REIT JV Land,  together  with  the  items  set  forth in
Sections  2.1(b),  (c),  (d) and (e) with  respect to the Wells Funds XI and XII
REIT JV Land.

         "Wells  Kalamazoo"  shall mean Danacq Kalamazoo LLC, a Delaware limited
liability company.

         "Wells Kalamazoo Improvements" shall mean all buildings, structures and
improvements  now or on the Closing Date situated on the Wells  Kalamazoo  Land,
including,  without limitation,  all parking areas and facilities,  improvements
and fixtures located on such Wells Kalamazoo Land.

         "Wells  Kalamazoo   Intangible  Property"  shall  mean  all  intangible
property,  if any, owned by Wells  Kalamazoo and related to the Wells  Kalamazoo
Land  identified  on EXHIBIT "A-2" as the Dana  (Kalamazoo)  Property and to the
Wells Kalamazoo  Improvements  located on the Wells  Kalamazoo Land,  including,
without  limitation,  the rights and interests,  if any, in and to the following
(to the extent  assignable):  (i) all assignable  plans and  specifications  and
other  architectural and engineering plans for such Wells Kalamazoo Land and the
Wells Kalamazoo  Improvements located thereon; (ii) all assignable warranties or
guaranties given or made in respect of the Wells Kalamazoo Improvements or Wells
Kalamazoo Personal Property;  (iii) all transferable  consents,  authorizations,
variances or waivers,  licenses,  permits and approvals from any governmental or
quasi-governmental agency, department, board, commission, bureau or other entity
or  instrumentality  solely  in  respect  of the Wells  Kalamazoo  Land or Wells
Kalamazoo  Improvements  located thereon;  and (iv) all of the right,  title and
interest of Wells  Kalamazoo in and to all  assignable  Service  Contracts  with
respect to the Wells Kalamazoo  Property that Purchaser  agrees to assume (or is
deemed to have agreed to assume).

         "Wells  Kalamazoo Land" shall mean that certain tract or parcel of real
property more particularly described on EXHIBIT "A-2" attached hereto and made a
part hereof as the Dana (Kalamazoo) Property.

         "Wells Kalamazoo Personal Property" shall mean all furniture (including
common area furnishings and interior landscaping items),  carpeting,  draperies,
appliances,  personal property  (excluding the computer software which is either
licensed to Wells Kalamazoo or which such Wells  Affiliate deems  proprietary [a
listing  of such  excluded  computer  software  being set forth on  EXHIBIT  "W"
attached  hereto and made a part  hereof]),  machinery,  apparatus and equipment
owned by such Wells  Affiliate and currently used  exclusively in the operation,
repair  and  maintenance  of  the  Wells  Kalamazoo  Land  and  Wells  Kalamazoo
Improvements and owned


                                       35

Purchase and Sale Agreement





by such Wells Affiliate and situated  thereon,  including,  without  limitation,
those specific items of personal property (if any) more  particularly  described
on EXHIBIT "B" attached hereto and made a part hereof, and all  non-confidential
books, records and files (excluding any appraisals, budgets, strategic plans for
such Wells Kalamazoo  Property,  internal  analyses,  information  regarding the
marketing  of the Wells  Kalamazoo  Property for sale,  submissions  relating to
obtaining  of  corporate   authorization  for  Wells  Kalamazoo,   attorney  and
accountant work product,  attorney-client privileged documents, or other similar
information in the  possession or control of Wells  Kalamazoo or any third party
property  manager  which  such Wells  Affiliate  reasonably  deems  proprietary)
relating to the Wells Kalamazoo Land and Wells Kalamazoo Improvements; provided,
however, the property described on EXHIBIT "B-2" attached hereto and made a part
hereof is expressly  excluded from the  definition of Wells  Kalamazoo  Personal
Property.  The Wells Kalamazoo  Personal  Property does not include any property
owned by  tenants,  contractors  or  licensees,  and shall be  conveyed by Wells
Kalamazoo to Purchaser subject to depletions,  replacements and additions in the
ordinary course of Wells Kalamazoo's business.

         "Wells Kalamazoo  Property" shall mean and refer to the Wells Kalamazoo
Land,  together  with the items set forth in Sections  2.1(b),  (c), (d) and (e)
with respect to the Wells Kalamazoo Land.

         "Wells OP" shall mean Wells  Operating  Partnership,  L.P.,  a Delaware
limited partnership.

         "Wells OP Ground  Lease" and "Wells OP Ground  Leases"  shall mean each
and any one or more of the ASML  Sub-Ground  Lease,  the Ingram Micro Bond Lease
and the ISS Bond Lease and all amendments and modifications thereto.

         "Wells OP Ground  Lease Land" and "Wells OP Ground  Lease  Lands" shall
mean any one or more of those  certain  tracts or parcels of real  property more
particularly  described on EXHIBIT "A-3" attached  hereto and made a part hereof
as the ASML Property in Maricopa County,  Arizona,  the Ingram Micro Property in
Shelby  County,  Tennessee,  and the ISS  Property  in Atlanta,  Fulton  County,
Georgia.

         "Wells  OP  Improvements"  shall  mean all  buildings,  structures  and
improvements  now or on the Closing  Date  situated on the  applicable  Wells OP
Land,   including  without   limitation,   all  parking  areas  and  facilities,
improvements and fixtures located on each applicable Wells OP Land.

         "Wells OP Intangible Property" shall mean all intangible  property,  if
any,  owned  by Wells  OP and  related  to each  applicable  Wells OP  Property,
including without limitation,  the rights and interests,  if any, of Wells OP in
and to the following (to the extent  assignable):  (i) all assignable  plans and
specifications and other architectural and engineering drawings for the Wells OP
Improvements  located  on the  applicable  Wells  OP Land;  (ii) all  assignable
warranties or guaranties  given or made in respect of such Wells OP Improvements
or Wells OP Personal Property; (iii) all transferable consents,  authorizations,
variances or waivers,  licenses,  permits and approvals from any governmental or
quasi-governmental agency, department, board,


                                       36

Purchase and Sale Agreement





commission,  bureau or other entity or instrumentality  solely in respect of the
applicable  Wells OP Lands;  and (iv) all of the right,  title and  interest  of
Wells  OP in  and  to all  assignable  Service  Contracts  with  respect  to the
applicable  Wells  OP Land to  which  such  Service  Contracts  relate  and that
Purchaser agrees to assume (or is deemed to have agreed to assume).

         "Wells OP Lands" shall mean all those certain tracts or parcels of real
property which are more particularly identified on EXHIBIT "A-1" attached hereto
as the Allstate Property in Decatur Township,  Marion County,  Indiana, the AT&T
(PA) Property in Susquehanna Township, Dauphin County, Pennsylvania, the Capital
One Property in Henrico County,  Virginia,  the Dial  Corporation  Property,  in
Maricopa County,  Arizona,  the Experian  Property in Collin County,  Texas, the
Gartner Surface Parking  Property in Lee County,  Florida,  the IKON Property in
Harris County, Texas, the Kerr McGee Property in Harris County, Texas, the Kraft
Foods Property in Forsyth County,  Georgia,  the Lucent Property in Wake County,
North  Carolina,  the Metris  Property  in Tulsa  County,  Oklahoma,  the Nissan
Property in the City of Irving, Dallas County, Texas, the Pacificare Property in
Bexar County,  Texas, the Transocean  Property in Harris County,  Texas, and the
Travelers  Express  Property in  Jefferson  County,  Colorado,  and the Wells OP
Leasehold Interests in those certain tracts or parcels of land more particularly
described on the attached EXHIBIT "A-3" as the ASML Property in Maricopa County,
Arizona,  the Ingram Micro  Property in Shelby  County,  Tennessee,  and the ISS
Property  in  Atlanta,  Fulton  County,  Georgia,   together  with  all  rights,
privileges  and  easements  appurtenant  to  each  of said  real  properties  or
leasehold estates, and all right, title and interest, if any, of Wells OP in and
to any land lying in the bed of any street, road, alley or right-of-way, open or
closed, adjacent to or abutting each applicable Wells OP Land.

         "Wells OP Leasehold Interests" shall mean the interests of the "lessee"
existing under and by virtue of the ASML Sub-Ground Lease, the Ingram Micro Bond
Lease and the ISS Bond Lease.

         "Wells OP Personal Property" shall mean all furniture (including common
area  furnishings  and  interior  landscaping  items),   carpeting,   draperies,
appliances,  personal property  (excluding the computer software which either is
licensed  to Wells OP or which  Wells OP deems  proprietary  [a  listing of such
excluded  computer  software being set forth on EXHIBIT "W" attached  hereto and
made a part hereof]),  machinery,  apparatus and equipment owned by Wells OP and
currently  used  exclusively  in the  operation,  repair and  maintenance of the
applicable  Wells  OP Land and  Wells  OP  Improvements  and  situated  thereon,
including,  without  limitation,  those specific items of personal  property (if
any) more particularly  described on EXHIBIT "B" attached hereto and made a part
hereof,  and all  non-confidential  books,  records  and  files  (excluding  any
appraisals,  budgets,  strategic  plans  for the Wells OP  Properties,  internal
analyses,  information  regarding the  marketing of the Wells OP Properties  for
sale,  submissions relating to Wells OP's obtaining of corporate  authorization,
attorney and accountant work product,  attorney-client  privileged documents, or
other similar information in the possession or control of Wells OP or Wells OP's
property managers which Wells OP reasonably deems  proprietary)  relating to the
Wells OP Land and Wells OP Improvements or Wells OP Leasehold Estates; provided,
however, the property described on EXHIBIT "B-1" attached hereto and made a part
hereof is expressly  excluded from the definition of Wells OP Personal Property.
The Wells OP Personal  Property does not include any property  owned by tenants,
contractors or licensees, and shall be


                                       37

Purchase and Sale Agreement





conveyed  by Wells OP to  Purchaser  subject  to  depletions,  replacements  and
additions in the ordinary course of Wells OP's business.

         "Wells  OP  Property"  shall  mean and refer to (x) the Wells OP Lands,
together  with the items set forth in Section  2.2(b),  (d),  (e) and (f) hereof
with  respect to each such Wells OP Land,  or (y) Wells OP Ground Lease Land and
the interest of Wells OP under the Wells OP Ground Leases  together with all the
rights of Wells OP under and pursuant to the Ingram Micro Bond Lease and the ISS
Bond Lease to purchase the fee simple title to the Land and Improvements subject
to each of said  Wells OP Ground  Leases,  together  with the items set forth in
Section 2.2(e) and (f) hereof with respect to the Wells OP Ground Lease Land.

         "Wells OP  Properties"  shall  have the  meaning  ascribed  thereto  in
Section 2.2 hereof.

         "Wells  Virginia  REIT"  shall mean Wells  REIT,  LLC,  VA I, a Georgia
limited liability company.

         "Wells Virginia REIT Improvements" shall mean all buildings, structures
and  improvements now or on the Closing Date situated on the Wells Virginia REIT
Land,  including,   without  limitation,   all  parking  areas  and  facilities,
improvements and fixtures located on such Wells Virginia REIT Land.

         "Wells  Virginia REIT  Intangible  Property"  shall mean all intangible
property, if any, owned by Wells Virginia REIT and related to the Wells Virginia
REIT Land  identified on EXHIBIT  "A-2" as the Alstom Power  Property and to the
Wells  Virginia  REIT  Improvements  located  on the Wells  Virginia  REIT Land,
including,  without limitation,  the rights and interests, if any, in and to the
following   (to  the  extent   assignable):   (i)  all   assignable   plans  and
specifications  and other  architectural  and  engineering  plans for such Wells
Virginia REIT Land and the Wells  Virginia REIT  Improvements  located  thereon;
(ii) all  assignable  warranties or  guaranties  given or made in respect of the
Wells Virginia REIT Improvements or Wells Virginia REIT Personal Property; (iii)
all  transferable  consents,  authorizations,  variances  or waivers,  licenses,
permits  and  approvals  from any  governmental  or  quasi-governmental  agency,
department,  board, commission, bureau or other entity or instrumentality solely
in respect of the Wells Virginia REIT Land or Wells  Virginia REIT  Improvements
located thereon; and (iv) all of the right, title and interest of Wells Virginia
REIT in and to all  assignable  Service  Contracts  with  respect  to the  Wells
Virginia  REIT Property  that  Purchaser  agrees to assume (or is deemed to have
agreed to assume).

         "Wells  Virginia  REIT Land" shall mean that certain tract or parcel of
real property more  particularly  described on EXHIBIT "A-2" attached hereto and
made a part hereof as the Alstom Power Property.

         "Wells  Virginia  REIT  Personal  Property"  shall  mean all  furniture
(including common area furnishings and interior  landscaping items),  carpeting,
draperies,  appliances, personal property (excluding the computer software which
is either  licensed to Wells Virginia REIT or which such Wells  Affiliate  deems
proprietary  [a listing of such excluded  computer  software  being set forth on
EXHIBIT "W" attached hereto and made a part hereof]), machinery, apparatus


                                       38

Purchase and Sale Agreement





and equipment  owned by such Wells  Affiliate and currently used  exclusively in
the operation,  repair and maintenance of the Wells Virginia REIT Land and Wells
Virginia  REIT  Improvements  and owned by such  Wells  Affiliate  and  situated
thereon,  including,  without  limitation,  those  specific  items  of  personal
property (if any) more particularly described on EXHIBIT "B" attached hereto and
made a part hereof, and all non-confidential books, records and files (excluding
any appraisals,  budgets, strategic plans for such Wells Virginia REIT Property,
internal  analyses,  information  regarding the marketing of the Wells  Virginia
REIT  Property  for  sale,   submissions  relating  to  obtaining  of  corporate
authorization  for Wells  Virginia REIT,  attorney and accountant  work product,
attorney-client  privileged  documents,  or  other  similar  information  in the
possession or control of Wells Virginia REIT or any third party property manager
which such Wells Affiliate  reasonably deems proprietary)  relating to the Wells
Virginia REIT Land and Wells Virginia REIT Improvements;  provided, however, the
property  described on EXHIBIT "B-2"  attached  hereto and made a part hereof is
expressly excluded from the definition of Wells Virginia REIT Personal Property.
The Wells Virginia REIT Personal Property does not include any property owned by
tenants,  contractors or licensees, and shall be conveyed by Wells Virginia REIT
to Purchaser  subject to depletions,  replacements and additions in the ordinary
course of Wells Virginia REIT's business.

         "Wells  Virginia  REIT  Property"  shall  mean and  refer to the  Wells
Virginia REIT Land,  together with the items set forth in Sections 2.1(b),  (c),
(d) and (e) with respect to the Wells Virginia REIT Land.

         "Wells  Westlake"  shall mean  Westlake  Wells,  L.P., a Texas  limited
partnership.

         "Wells Westlake Improvements" shall mean all buildings,  structures and
improvements  now or on the Closing Date  situated on the Wells  Westlake  Land,
including,  without limitation,  all parking areas and facilities,  improvements
and fixtures located on such Wells Westlake Land.

         "Wells  Westlake   Intangible   Property"  shall  mean  all  intangible
property, if any, owned by Wells Westlake and related to the Wells Westlake Land
identified  on EXHIBIT "A-2" as the Daimler  Chrysler  Property and to the Wells
Westlake  Improvements  located on the Wells Westlake Land,  including,  without
limitation,  the rights and  interests,  if any, in and to the following (to the
extent  assignable):  (i) all  assignable  plans  and  specifications  and other
architectural  and engineering  plans for such Wells Westlake Land and the Wells
Westlake  Improvements  located  thereon;  (ii)  all  assignable  warranties  or
guaranties given or made in respect of the Wells Westlake  Improvements or Wells
Westlake Personal  Property;  (iii) all transferable  consents,  authorizations,
variances or waivers,  licenses,  permits and approvals from any governmental or
quasi-governmental agency, department, board, commission, bureau or other entity
or  instrumentality  solely  in  respect  of the  Wells  Westlake  Land or Wells
Westlake  Improvements  located  thereon;  and (iv) all of the right,  title and
interest  of Wells  Westlake in and to all  assignable  Service  Contracts  with
respect to the Wells Westlake  Property that  Purchaser  agrees to assume (or is
deemed to have agreed to assume).

         "Wells  Westlake  Land" shall mean those  certain  tracts or parcels of
real property more  particularly  described on EXHIBIT "A-2" attached hereto and
made a part hereof as the Daimler Chrysler Property.


                                       39

Purchase and Sale Agreement





         "Wells Westlake Personal Property" shall mean all furniture  (including
common area furnishings and interior landscaping items),  carpeting,  draperies,
appliances,  personal property  (excluding the computer software which is either
licensed to Wells Westlake or which such Wells  Affiliate  deems  proprietary [a
listing  of such  excluded  computer  software  being set forth on  EXHIBIT  "W"
attached  hereto and made a part  hereof]),  machinery,  apparatus and equipment
owned by such Wells  Affiliate and currently used  exclusively in the operation,
repair  and   maintenance   of  the  Wells  Westlake  Land  and  Wells  Westlake
Improvements and owned by such Wells Affiliate and situated thereon,  including,
without  limitation,  those  specific  items of personal  property (if any) more
particularly  described on EXHIBIT "B"  attached  hereto and made a part hereof,
and all  non-confidential  books,  records and files  (excluding any appraisals,
budgets,  strategic plans for such Wells Westlake  Property,  internal analyses,
information  regarding  the marketing of the Wells  Westlake  Property for sale,
submissions relating to obtaining of corporate authorization for Wells Westlake,
attorney and accountant work product,  attorney-client  privileged documents, or
other similar  information in the possession or control of Wells Westlake or any
third  party  property  manager  which such  Wells  Affiliate  reasonably  deems
proprietary)   relating  to  the  Wells   Westlake   Land  and  Wells   Westlake
Improvements;  provided,  however,  the  property  described  on  EXHIBIT  "B-2"
attached hereto and made a part hereof is expressly excluded from the definition
of Wells Westlake Personal  Property.  The Wells Westlake Personal Property does
not include any property owned by tenants,  contractors or licensees,  and shall
be conveyed by Wells Westlake to Purchaser  subject to depletions,  replacements
and additions in the ordinary course of Wells Westlake's business.

         "Wells  Westlake  Property"  shall mean and refer to the Wells Westlake
Land,  together  with the items set forth in Sections  2.1(b),  (c), (d) and (e)
with respect to the Wells Westlake Land.

                                   ARTICLE 2.
                                PURCHASE AND SALE

         2.1.     Agreement to Sell and Purchase the Wells Affiliate Properties.
Subject to and in accordance  with the terms and  provisions of this  Agreement,
each  Wells  Affiliate  agrees to sell and  Purchaser  agrees to  purchase,  the
following properties  respectively owned by such Wells Affiliate  (collectively,
the "Wells Affiliate Properties"):

                  (a)      the Wells Affiliate Lands;

                  (b)      the Wells Affiliate Improvements;

                  (c)      all right, title and interest of the applicable Wells
                           Affiliate  as  "landlord"  or  "lessor" in and to the
                           Leases, any guaranties of the Leases and the Security
                           Deposits,  with respect to the Wells  Affiliate Lands
                           and Wells Affiliate  Improvements owned by such Wells
                           Affiliate;

                  (d)      the Wells Affiliate Personal Property; and


                                       40

Purchase and Sale Agreement





                  (e)      the Wells Affiliate Intangible Property.

         2.2.     Agreement  to Sell  and  Purchase  the  Wells  OP  Properties.
Subject to and in accordance  with the terms and  provisions of this  Agreement,
Wells  OP  agrees  to sell  and  Purchase  agrees  to  purchase,  the  following
properties (the "Wells OP Properties"):

                  (a)      the Wells OP Lands;

                  (b)      the Wells OP Improvements;

                  (c)      the Wells OP  Leasehold  Estates,  together  with the
                           rights of Wells OP under and  pursuant  to the Ingram
                           Micro Bond  Lease and the ISS Bond Lease to  purchase
                           the Wells OP Land and Wells OP  Improvements  located
                           respectively on such Land;

                  (d)      all  right,   title  and  interest  of  Wells  OP  as
                           "landlord"  or  "lessor"  in and to the  Leases,  any
                           guaranties  of the Leases and the Security  Deposits,
                           with  respect  to the  Wells  OP Land  and  Wells  OP
                           Improvements;

                  (e)      the Wells OP Personal Property; and

                  (f)      the Wells OP Intangible Property.

         2.3.     Permitted Exceptions. Each of the Properties shall be conveyed
subject to the matters which are, or are deemed to be, Permitted Exceptions with
respect to such Property  subject to Purchaser's  objection  rights and Sellers'
cure obligations under Section 3.4 hereof.

         2.4.     Earnest Money.

                  (a)      Within  one (1) Business Day  following the execution
and delivery of this Agreement by Seller and Purchaser,  Purchaser shall deliver
the Earnest  Money to Escrow Agent by federal wire  transfer,  payable to Escrow
Agent,  which  Earnest  Money  shall be held and  released  by  Escrow  Agent in
accordance with the terms of the Escrow  Agreement.  The parties hereto mutually
acknowledge  and agree that time is of the  essence  in  respect of  Purchaser's
timely  deposit of the Earnest  Money with Escrow  Agent;  and that if Purchaser
fails to timely  deposit the Earnest  Money with Escrow  Agent,  this  Agreement
shall  terminate,  and neither  party  hereto  shall have any further  rights or
obligations hereunder,  except those provisions of this Agreement which by their
express terms survive the termination of this Agreement.

                  (b)      The  Earnest  Money shall be applied to the  Purchase
Price at the Closing and shall  otherwise  be held,  refunded,  or  disbursed in
accordance  with the  terms of the  Escrow  Agreement  and this  Agreement.  The
Earnest  Money  shall be applied to the  Properties  as set forth on EXHIBIT "N"
attached  hereto and made a part hereof.  Interest and other income from time to
time earned on the Earnest  Money shall be earned for the account of  Purchaser,
and shall be a part of the Earnest Money;  and the Earnest Money hereunder shall
be comprised of the Earnest Money and all such interest and other income.


                                       41

Purchase and Sale Agreement





         2.5.     Purchase Price. Subject to adjustment and credits as otherwise
specified in this Section 2.5 and  elsewhere in this  Agreement,  the  aggregate
purchase price (the "Purchase Price") to be paid by Purchaser to Sellers for the
Properties  shall  be  Seven  Hundred  Eighty-Six  Million  and  No/100  Dollars
($786,000,000.00 U.S.). The Purchase Price shall be allocated to Wells OP and to
each Wells  Affiliate  with  respect to each of the  Properties  as set forth on
EXHIBIT "P" attached hereto and made a part hereof.  The Purchase Price shall be
paid by Purchaser to Sellers at the Closing as follows:

                  (a)      The Earnest  Money  shall be paid by Escrow  Agent to
Sellers at Closing; and

                  (b)      At   Closing,  the  balance  of  the  Purchase  Price
allocated to each Seller and such Seller's Property,  after applying, as partial
payment of the Purchase Price  allocated to such Seller,  an amount equal to the
Earnest Money and subject to prorations and other adjustments  specified in this
Agreement,  shall be paid by Purchaser  in  immediately  available  funds to the
Title Company, for further delivery to an account or accounts designated by each
Seller.  If the amount due from  Purchaser  pursuant  to this  Agreement  is not
received  by the  Title  Company  on or before  the  later of 3:00 p.m.  Eastern
Standard Time or in sufficient  time for  reinvestment on the Closing Date or in
sufficient time for the Lenders to receive the amount required for payoff of the
Loans on the Closing Date, then Purchaser  shall  reimburse  Sellers for loss of
interest due to the inability to reinvest  Sellers' funds on the Closing Date or
the inability of the applicable Seller to pay off any Loan payable to its Lender
on the Closing  Date,  calculated  at the rate of eight  percent  (8%) per annum
(calculated on a per diem basis,  using a 365-day  year).  The provisions of the
preceding sentence of this Section 2.5(b) shall survive the Closing.

         2.6.     Independent Contract Consideration. In addition to, and not in
lieu of, the delivery to Escrow Agent of the Earnest  Money,  concurrently  with
Purchaser's execution and delivery of this Agreement to Sellers, Purchaser shall
deliver  to Wells  OP, as a Seller  or as a  general  partner  or member of each
Seller,  Purchaser's  check,  payable to the order to Wells OP, as Seller and as
agent of each other  Seller,  in the amount of One  Hundred  and No/100  Dollars
($100.00). Sellers and Purchaser hereby mutually acknowledge and agree that said
sum represents  adequate  bargained for consideration for Sellers' execution and
delivery of this  Agreement  and  Purchaser's  right to inspect  the  Properties
pursuant to Article III. Said sum is in addition to and independent of any other
consideration  or payment provided for in this Agreement and is nonrefundable in
all events.

         2.7.     Closing.

                  (a)      Except  as  specifically  provided to the contrary in
subsections  (b), (c) and (d) of this Section 2.7, the  consummation of the sale
by Sellers and purchase by Purchaser of the Properties (the "Closing")  shall be
held on March 25,  2005 (the  "First  Closing  Date") at the offices of Sellers'
Counsel, Troutman Sanders, LLP, Suite 5200, Bank of America Plaza, 600 Peachtree
Street, N.E., Atlanta, Georgia 30308-2216, at 10:00 A.M. It is contemplated that
the transaction shall be closed with the concurrent delivery of the documents of
title and the payment of the  Purchase  Price.  Notwithstanding  the  foregoing,
there shall be no requirement that Sellers


                                       42

Purchase and Sale Agreement





and Purchaser physically meet for the Closing, and all documents to be delivered
at the Closing  shall be delivered to the Title Company or in escrow to Sellers'
Counsel  unless  the  parties  hereto  mutually  agree  otherwise.  Sellers  and
Purchaser agree to use reasonable  efforts to complete all  requirements for the
Closing prior to the First Closing Date.

                  (b)      Specifically   notwithstanding  the  foregoing,   and
except as  specifically  provided to the contrary in subsections  (c) and (d) of
this Section 2.7,  and subject to the terms of this  Agreement,  if on the First
Closing Date,  the rights of the  Outstanding  ROFO/ROFR  Party (the  "ROFO/ROFR
Rights") to purchase the Bank of America  Property  pursuant to the terms of the
Bank of America Lease and Sellers' Offer Notice in connection  therewith,  shall
not have  been  waived  (or  deemed  to have  been  waived)  by the  Outstanding
ROFO/ROFR  Party pursuant to the terms of such Lease,  then, as to said Property
(the  "Deferred  Closing  Property"),  the Closing as to such  Deferred  Closing
Property shall take place at the offices of Sellers'  Counsel as set forth above
(or such other location in Atlanta, Georgia as Seller and Purchaser may mutually
agree),  at 10:00  A.M.  on the date  that is no later  than  fifteen  (15) days
following the date on which the  Outstanding  ROFO/ROFR  Party shall have waived
(or shall be deemed to have  waived) its right to  purchase  the Bank of America
Property  pursuant to the terms of such Lease or such earlier date as the Seller
and Purchaser may agree in writing;  provided,  however, Purchaser shall have no
obligations  with respect to such  Deferred  Closing  Property  unless the Title
Company is prepared to issue its title policy insuring Purchaser's title to such
Deferred  Closing  Property  either (a) including  coverage  affirming  that the
ROFO/ROFR  Rights with respect to the sale of such Deferred  Closing Property to
Purchaser  have been waived,  or (b) providing  that the  ROFO/ROFR  Rights with
respect to the sale of such  Property to  Purchaser  are not an  encumbrance  to
title  thereto  (an  "ROFO/ROFR  Endorsement").  Subject to the  foregoing,  the
Closing as to such Deferred  Closing  Property shall take place at such specific
place,  time and date (a  "Deferred  Closing  Date") as shall be  designated  by
Purchaser in a written  notice to Sellers not less than three (3) Business  Days
prior to such Closing. If Purchaser fails to give notice of the Deferred Closing
Date, then,  subject to delivery of the applicable  ROFO/ROFR  Endorsement,  the
Closing of the Deferred  Closing  Property shall be held on the thirtieth (30th)
day  following  the date on which the  Outstanding  ROFO/ROFR  Party  shall have
waived  (or been  deemed to have  waived)  its right to  purchase  the  Deferred
Closing  Property,  as such  waiver has been  confirmed  by written  notice from
Sellers to  Purchaser,  with such  Closing to be held at the offices of Sellers'
Counsel,  at the address set forth in Section 2.7(a) above.  Notwithstanding the
foregoing,  there shall be no requirement that Sellers and Purchaser  physically
meet for the Closing,  and all documents to be delivered at the Closing shall be
delivered  to the Title  Company  or in escrow to  Sellers'  Counsel  unless the
parties hereto  mutually  agree  otherwise.  Sellers and Purchaser  agree to use
reasonable  efforts to complete all  requirements  for the Closing  prior to the
Deferred Closing Date.

                  (c)      Notwithstanding anything to the contrary contained in
this Section 2.7, Sellers and Purchaser each shall have the right to adjourn the
First  Closing  Date to a date not  earlier  than April 4, 2005,  nor later than
April 29,  2005,  by written  notice to other party and Escrow Agent given on or
before March 22, 2005,  and specifying in said notice the date for the adjourned
Closing (a "Deferred  Closing Date"). In the event Sellers or Purchaser shall so
elect to adjourn the Closing,  then the Closing  shall take place at the offices
of  Sellers'  Counsel as set forth  above (or such other  location  in  Atlanta,
Georgia as Sellers and Purchaser may mutually


                                       43

Purchase and Sale Agreement





agree), at 10:00 A.M. on the date so specified in Sellers' notice or Purchaser's
notice;  and if Sellers or  Purchaser  fail to specify the date in said  notice,
then such Deferred Closing Date shall be deemed to be April 29, 2005.

                  (d)      If  at any  time  after  the  Effective  Date of this
Agreement but prior to the Closing Date, (i) trading in securities  generally on
the New York Stock  Exchange shall have been  suspended,  or (ii) national banks
shall have been  closed,  then  either  party shall have the right to extend the
Closing Date until such time as trading in securities  generally on the New York
Stock  Exchange has  recommenced  or national  banks have  re-opened,  by giving
written  notice  to the other and to  Escrow  Agent;  but in no event  shall the
Closing occur later than June 30, 2005.

                                   ARTICLE 3.
                    PURCHASER'S INSPECTION AND REVIEW RIGHTS

         3.1.     Due Diligence Inspections.

                  (a)      From  and after the  "Effective  Date" (as defined in
and pursuant to the Right of Entry  Agreement) until the Closing Date or earlier
termination  of the  inspection  rights  of  Purchaser  under the Right of Entry
Agreement  or under this  Agreement,  Sellers  shall  permit  Purchaser  and its
authorized  representatives to inspect the Properties,  to perform due diligence
and environmental investigations, to examine the records of Sellers with respect
to the Properties, and make copies thereof, at such times during normal business
hours as Purchaser or its  representatives  may  request.  All such  inspections
shall be  nondestructive  in nature,  and  specifically  shall not  include  any
physically  intrusive testing. All such inspections shall be performed in such a
manner to minimize any  interference  with the business of the tenants under the
Leases and the Wells OP Ground  Leases at the  Properties  and, in each case, in
compliance with the rights and obligations of the applicable  Seller as landlord
under the  applicable  Leases and as lessee under the Ground  Leases.  Purchaser
agrees that Purchaser shall make no contact with and shall not interview tenants
without the express prior consent of Sellers.  All  inspection  fees,  appraisal
fees,  engineering fees and all other costs and expenses of any kind incurred by
Purchaser  relating  to  the  inspection  of  the  Properties  shall  be  solely
Purchaser's expense.  Sellers reserve the right to have a representative present
at the time of making any such  inspection.  Purchaser  shall notify Sellers not
less than two (2) Business Days in advance of making any such inspection.

                  (b)      If   any  Closing  is  not   consummated   hereunder,
Purchaser shall promptly  deliver to Sellers (if  contractually  permitted to do
so) copies of all reports,  surveys and other information furnished to Purchaser
by third  parties  in  connection  with such  inspections  with  respect  to any
Property as to which the Closing fails to occur,  provided that Purchaser is not
contractually prohibited from doing so; provided further, however, that delivery
of such  copies and  information  shall be without  warranty  or  representation
whatsoever,  express or implied, including,  without limitation, any warranty or
representation as to ownership,  accuracy,  adequacy or completeness  thereof or
otherwise.  Purchaser  shall use  commercially  reasonable  efforts to avoid any
contractual  obligations  prohibiting  the delivery to Sellers of copies of such


                                       44

Purchase and Sale Agreement





reports,  surveys  and  information.  This  Section  3.1(b)  shall  survive  the
termination of this Agreement.

                  (c)      To   the  extent  that   Purchaser   or  any  of  its
representatives, agents or contractors damages or disturbs the Properties or any
portion  thereof,  Purchaser  shall  return the same to  substantially  the same
condition  which  existed  immediately  prior  to such  damage  or  disturbance.
Purchaser hereby agrees to and shall indemnify, defend and hold harmless Sellers
from and against any and all  expense,  loss or damage  which  Sellers may incur
(including, without limitation, reasonable attorney's fees actually incurred) as
a result of any act or omission of Purchaser or its  representatives,  agents or
contractors,  other than any expense,  loss or damage to the extent arising from
any act or omission of Sellers during any such inspection.  Said indemnification
shall not extend to pre-existing conditions merely discovered by Purchaser. Said
indemnification  agreement shall survive the final Closing under this Agreement,
or earlier termination of this Agreement, until the expiration of any applicable
statute  of  limitations.   Purchaser  shall  maintain  and  shall  ensure  that
Purchaser's  consultants and contractors  maintain  commercial general liability
insurance in an amount not less than  $2,000,000,  combined single limit, and in
form and substance adequate to insure against all liability of Purchaser and its
consultants and contractors,  respectively, and each of their respective agents,
employees  and  contractors,  arising  out of  inspections  and  testing  of the
Properties or any part thereof made on Purchaser's  behalf.  Purchaser agrees to
provide to Sellers,  upon  Sellers'  request,  a certificate  of insurance  with
regard to each applicable liability insurance policy prior to any entry upon the
Properties by Purchaser or its consultants or  contractors,  as the case may be,
pursuant to this Section 3.1.

                  (d)      Sellers hereby agree that prior to the termination of
this  Agreement,  neither  Sellers  nor any of Sellers'  respective  affiliates,
subsidiaries,  agents,  representatives  or  successors  shall  enter  into  any
contract to sell or transfer  (directly  or  indirectly)  any one or more of the
Properties or any interest  therein or negotiate with any third party respecting
the sale of the  Properties  or any interest  therein,  except that this Section
3.1(d)  shall not affect or limit any action  the  Sellers  may take in order to
comply with any rights of first offer or rights of first refusal under  existing
Leases affecting the Properties.

         3.2.     Deliveries  by Sellers  to  Purchaser;  Purchaser's  Access to
Property Records of Sellers.

                  (a)      Sellers  and  Purchaser  acknowledge  that all of the
following  (the  "Due  Diligence  Deliveries")  either  have  been or  shall  be
delivered or made  available to Purchaser (and  Purchaser  further  acknowledges
that no additional  items are required to be delivered by Sellers or any of them
to Purchaser  except as may be expressly  set forth in other  provisions of this
Agreement):

                           (i)      Copies of  current  property  tax bills with
                                    respect to each Property.

                           (ii)     Copies of operating  statements for the past
                                    twenty-four (24) months with respect to each
                                    Property.


                                       45

Purchase and Sale Agreement





                           (iii)    Copies of all Leases and guarantees relating
                                    thereto  existing as of the  Effective  Date
                                    with respect to each Property.

                           (iv)     An aged tenant  receivable  report,  if any,
                                    regarding   income  from  the  tenants  with
                                    respect to each Property.

                           (v)      Copies of all  Commission  Agreements in the
                                    possession  of Sellers  with respect to each
                                    Property.

                           (vi)     Copies of all Service Contracts currently in
                                    place with respect to each Property.

                           (vii)    Copies of the current  commitments for title
                                    insurance  issued by the Title  Company with
                                    respect to each of the Properties.

                           (viii)   Copies of the Existing  Surveys with respect
                                    to the Land and the  Wells OP  Ground  Lease
                                    Land.

                           (ix)     Copies of the Wells OP  Ground  Leases,  and
                                    each  of  the  title  documents   listed  on
                                    EXHIBIT "I" attached hereto.

                           (x)      Copies of the Existing Environmental Reports
                                    with respect to each Property.

                           (xi)     Copies of Sellers'  offering notices to each
                                    of  the   tenants  and  the   Declarant   as
                                    described in clauses (i), (iii),  (iv), (v),
                                    (viii), (ix), (x), (xi) and (xii) of Section
                                    4.1(f) hereof.

                           (xii)    Copies of all certificates of occupancy with
                                    respect  to  each  Property   which  are  in
                                    Sellers' possession.

                  (b)      From the "Effective Date" (as defined in and pursuant
to the  Right  of Entry  Agreement)  until  the last  Closing  Date  under  this
Agreement,  or  earlier  termination  of this  Agreement,  Sellers  shall  allow
Purchaser and  Purchaser's  representatives,  on reasonable  advance  notice and
during   normal   business   hours,   to  have  access  to   Sellers'   existing
non-confidential  books,  records  and  files  relating  to the  Properties,  at
Sellers' respective on-site management offices at the Properties,  at the office
of the  Broker,  or at the  office  of  Sellers  at 6200  The  Corners  Parkway,
Norcross,  Georgia  30092,  for the purpose of  inspecting  and (at  Purchaser's
expense) copying the same, including,  without limitation,  the materials listed
below (to the extent any or all of the same are in the  possession  of Sellers),
subject,  however,  to the limitations of any  confidentiality  or nondisclosure
agreement to which  Sellers or any of them may be bound,  and provided that none
of the Sellers  shall be required to deliver or make  available to Purchaser any
appraisals,  third party reports (other than the Existing Environmental Reports)
obtained by any Seller prior to the acquisition of the Property or Properties by
such  Seller,  strategic  plans  for the  Properties  or any of  them,  internal
analyses,  information regarding the marketing for sale of the Properties or any
of  them,   submissions   relating  to  such  Seller's  obtaining  of  corporate


                                       46

Purchase and Sale Agreement





authorization,  attorney and accountant work product, attorney-client privileged
documents,  or other  information in the possession or control of Sellers or any
of them which Sellers or any of them deem  proprietary.  Purchaser  acknowledges
and agrees,  however,  that  Sellers make no  representation  or warranty of any
nature  whatsoever,   express  or  implied,   with  respect  to  the  ownership,
enforceability,  accuracy,  adequacy or completeness or otherwise of any of such
records, evaluations,  data, investigations,  reports or other materials. If the
Closing  contemplated  hereunder  fails to take place for any reason,  Purchaser
shall promptly  return (or certify as having  destroyed) all copies of materials
copied from the books,  records and files of Sellers or any of them  relating to
the Properties.  It is understood and agreed that none of the Sellers shall have
any obligation to obtain,  commission or prepare any such books, records, files,
reports or studies not now in the possession or control of such Sellers. Subject
to the  foregoing,  Sellers agree to make  available to Purchaser for inspection
and copying, without limitation, the following books, records and files relating
to the Properties, all to the extent the same are in the possession of Sellers:

                           (i)      Tenant Information.  Copies of any financial
                                    statements or other financial information of
                                    any tenants  under the Leases (and the Lease
                                    guarantors), written information relative to
                                    the  tenants'  payment   histories,   tenant
                                    correspondence,    and    copies    of   all
                                    certificates  of insurance  provided by such
                                    tenants  pursuant  to  the  terms  of  their
                                    respective Leases at the Properties,  to the
                                    extent the  applicable  Wells  Affiliate  or
                                    Wells OP has the same in its possession;

                           (ii)     Plans. All available  construction plans and
                                    specifications  in  the  possession  of  the
                                    applicable   Wells  Affiliate  or  Wells  OP
                                    relating  to  the  development,   condition,
                                    repair and  maintenance  of the  Properties,
                                    the Improvements and the Personal Property;

                           (iii)    Permits;  Licenses.  Copies of any  permits,
                                    licenses,  or other similar documents in the
                                    possession of the applicable Wells Affiliate
                                    or Wells OP relating  to the use,  occupancy
                                    or operation of the Properties; and

                           (iv)     Operating Costs and Expenses.  All available
                                    records of any operating  costs and expenses
                                    for the  Properties in the possession of the
                                    applicable Wells Affiliate or Wells OP.

                  (c)      Subject  to Section 12.4 hereof, for a period of time
commencing on the Effective Date of this  Agreement and  continuing  through the
date that is  seventy-five  (75) days after the date of  Closing,  if  Purchaser
determines in good faith that it is required to file financial  statements,  pro
formas and any other required  financial  information in compliance with (i) any
or all of  Rule  3-05  or  3-14  of  Regulation  S-X of the  SEC,  or  (ii)  any
registration statement, 424(b) prospectus,  report or disclosure statement filed
with the SEC by or on behalf of  Purchaser,  Sellers,  upon  reasonable  advance
written notice from Purchaser,  and at Purchaser's sole cost and expense,  shall
use good  faith  efforts  to  provide  Purchaser  and its  representatives  with
reasonable


                                       40

Purchase and Sale Agreement





access to financial  information  and  documentation  relating to the Properties
pertaining  to the period  from  January 1, 2004  through  the date of  Closing,
provided the same shall then be in the  possession of any Seller or an Affiliate
of any Seller in the form and content reasonably  requested and such information
is relevant and reasonably necessary to enable Purchaser and Purchaser's outside
accountants to file such financial  statements,  pro formas and other  financial
information  with the SEC as required by applicable laws, rules and regulations.
Purchaser shall  reimburse  Sellers for all reasonable  out-of-pocket  costs and
expenses paid to third parties by Sellers in connection therewith.  At or within
seventy-five  (75) days after  Closing,  Seller shall use good faith  efforts to
provide to the Purchaser's  independent  accounting firm a signed representation
letter  from such  Seller  or such  Seller's  Property  Manager  which  would be
reasonably  sufficient  in the  judgment  of such  Seller's  independent  public
accountants to enable  Purchaser's  independent  public  accountant to render an
opinion on the financial  statements of the Properties  pertaining to the period
from January 1, 2004 through the date of Closing.

         3.3.     Condition of the Properties.

                  (a)      The  parties  hereto  acknowledge  that Purchaser has
employed  independent zoning consultants,  and engineering and/or  environmental
professionals  to review zoning and to perform  engineering,  environmental  and
physical  assessments on Purchaser's behalf in respect of the Properties and the
condition thereof. Purchaser and Sellers mutually acknowledge and agree that the
Properties  are being sold in an "AS IS" condition and "WITH ALL FAULTS,"  known
or unknown,  contingent or existing.  Purchaser has the sole  responsibility  to
fully inspect the  Properties,  to  investigate  all matters  relevant  thereto,
including, without limitation, the condition of the Properties, and to reach its
own, independent evaluation of any risks (environmental or otherwise) or rewards
associated  with  the  ownership,  leasing,  management  and  operation  of  the
Properties;  and  Purchaser  hereby  acknowledges  and  agrees  that it has been
afforded  sufficient  time and  access to the  Properties,  the  tenants of such
Properties and books and records relating to the Properties to fully inspect the
Properties,  to investigate all matters  relevant  thereto,  including,  without
limitation,  the condition of the Properties,  and to reach its own, independent
evaluation of all risks  (environmental or otherwise) or rewards associated with
the ownership, leasing, management and operation of the Properties. Effective as
of the Closing and except as expressly  set forth in this  Agreement,  Purchaser
hereby  waives  and  releases  Sellers  and each of them,  and their  respective
officers,  directors,  shareholders,   members,  partners,  agents,  affiliates,
employees  and  successors  and  assigns  from and  against  any and all claims,
obligations and liabilities arising out of or in connection with the Properties.

                  (b)      To  the fullest  extent  permitted by law,  Purchaser
does hereby  unconditionally  waive and release  Sellers,  and each of them, and
their respective officers, directors,  shareholders,  members, partners, agents,
affiliates  and employees  from any present or future claims and  liabilities of
any nature  arising  from or  relating to the  presence  or alleged  presence of
Hazardous  Substances  in, on, at, from,  under or about the  Properties  or any
adjacent property, including, without limitation, any claims under or on account
of any Environmental  Law,  regardless of whether such Hazardous  Substances are
located in, on, at, from, under or about the Properties or any adjacent property
prior to or after the date hereof (collectively,  "Environmental  Liabilities");
provided,  however,  that the foregoing release as it applies to any Seller, its
officers,  directors,  shareholders,  members,  partners, agents, affiliates and
employees,  shall not release  such


                                       48

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Seller, or its general partners or members from any Environmental Liabilities of
(i) such  Seller  relating  to any  Hazardous  Substances  which may be  placed,
located or released  on any of the  Properties  by any Seller  after the date of
Closing,  or (ii) the general partners or members of such Seller relating to any
Hazardous  Substances  which may be placed,  located or  released  by any Seller
after the date of Closing.  The terms and  provisions  of this Section 3.3 shall
survive the Closing.

         3.4.     Title  and  Survey.  Seller  has  provided  Purchaser  with  a
preliminary   title   commitment   with  respect  to  each  of  the   Properties
(individually,  a "Seller Title  Commitment",  and  collectively,  the "Sellers'
Title  Commitments").  Purchaser  has had and shall have the right,  but not the
obligation, to order from the Title Company, a preliminary title commitment with
respect to each of the  Properties  or updates or  revisions  to any of Sellers'
Title  Commitments   (individually,   a  "Purchaser's  Title  Commitment",   and
collectively,  the "Purchaser's Title  Commitments").  Purchaser shall also have
the right to have Lawyers Title Insurance  Corporation and/or Land America Title
Insurance  Company  participate with the Title Company in the title insurance to
be obtained by Purchaser  (and its  lenders);  provided,  however,  that no such
participation  shall result in any obligation of Sellers to pay for any increase
in the cost of "standard" or "base" title  insurance  coverage for any policy or
policies of owner's title insurance coverage issued to Purchaser with respect to
the Properties at Closing as a result of such title insurance  participation  by
Lawyers Title Insurance  Corporation and/or Land America Title Insurance Company
(or any of its or their affiliated title companies).  Purchaser shall direct the
Title Company to send a copy of each of the  Purchaser's  Title  Commitments  to
Sellers.  "Title  Commitment"  shall  mean  a  Seller's  Title  Commitment  or a
Purchaser's  Title  Commitment.  The Seller's Title  Commitments and Purchaser's
Title  Commitments  are  collectively  referred  to as the "Title  Commitments".
Sellers and Purchaser mutually acknowledge and agree that prior to the Effective
Date, Sellers and Purchaser have made arrangements for the preparation of one or
more  updates  of each  Existing  Survey  (and in the case of the  Alstom  Power
Property, the Americredit Property, the Kerr McGee Property, the Nissan Property
and  the  Traveler's   Express   Property,   Sellers  and  Purchaser  have  made
arrangements  for as-built  Surveys to be prepared where no such as-built survey
currently exists) (individually,  a "Survey", and collectively,  the "Surveys").
Copies of all such Surveys and any updates or revisions to any of the same shall
be made available  concurrently to Sellers and Purchasers.  From time to time at
any time after the  Effective  Date of this  Agreement  and prior to the Closing
Date, Purchaser may give written notice to Seller's Counsel (a "Subsequent Title
Notice") of exceptions  to title first  appearing of record with respect to such
Property after the effective date of the most recent  previous Title  Commitment
or updated Title  Commitment with respect to such Property or matters of survey,
which matters of record or matters of survey would not have been disclosed by an
accurate  updated  examination of title or preparation of an updated ALTA survey
prior to date of the most recently revised Title Commitment or the most recently
revised Survey with respect to such Property.  Sellers shall have the right, but
not the  obligation  (except as to Monetary  Objections),  to attempt to remove,
satisfy or  otherwise  cure any  exceptions  to title to which the  Purchaser so
objects.  Within five (5) Business  Days after receipt of any  Subsequent  Title
Notice,  Sellers shall give written notice to Purchaser's  Counsel informing the
Purchaser  of the election of Sellers  with  respect to the  objections  in such
Subsequent  Title  Notice.  If Sellers fail to give  written  notice of election
within  such  five (5)  Business  Day  period,  Sellers  shall be deemed to have
elected not to attempt to cure the objections  (other than Monetary  Objections)


                                       49

Purchase and Sale Agreement





set forth in such Subsequent Title Notice; it being specifically  understood and
agreed that except as specifically  set forth in this Agreement to the contrary,
Sellers have elected not to attempt to cure any objections  (other than Monetary
Objections)  set forth in any of the notices of title and survey  objections and
comments  provided  by  Purchaser's  Counsel to  Sellers'  Counsel  prior to the
Effective  Date of this  Agreement.  If  Sellers  elect to  attempt  to cure any
objections,  Sellers shall be entitled to one or more reasonable adjournments of
the  Closing of up to but not  beyond the  thirtieth  (30th) day  following  the
initial date set for the Closing to attempt such cure,  but, except for Monetary
Objections,  Sellers  shall not be  obligated  to expend any sums,  commence any
suits or take any other  action  to  effect  such  cure.  Except as to  Monetary
Objections,  if Sellers  elect,  or are deemed to have elected,  not to cure any
exceptions  to title to which  Purchaser  has objected or if, after  electing to
attempt to cure,  Sellers determine that they are unwilling or unable to remove,
satisfy or otherwise cure any such exceptions, Purchaser's sole remedy hereunder
in such event  shall be either (i) to accept  title to the  applicable  Property
subject to such exceptions as if Purchaser had not objected  thereto and without
reduction of the  Purchase  Price,  (ii) if such  exceptions  are matters  first
appearing of record or first disclosed by any Survey or updated Title Commitment
after  the  date of this  Agreement,  to  terminate  this  Agreement  as to such
Property or Properties,  or (iii) to terminate  this Agreement  within three (3)
Business  Days after  receipt  of  written  notice  from  Sellers  either of the
election of Sellers not to attempt to cure any objection or of the determination
of  Sellers,  having  previously  elected to attempt to cure,  that  Sellers are
unable or  unwilling  to do so, or three (3)  Business  Days after  Sellers  are
deemed  hereunder  to have elected not to attempt to cure such  objections  (and
upon any such  termination  under clause (iii) above,  Escrow Agent shall return
the  Earnest  Money to  Purchaser).  Notwithstanding  anything  to the  contrary
contained  elsewhere in this  Agreement,  Sellers  shall be obligated to cure or
satisfy all Monetary Objections at or prior to Closing, and may use the proceeds
of the Purchase Price at Closing for such purpose.

         3.5.     Service  Contracts.  At  Closing,  Purchaser shall  assume the
obligations  of Sellers  arising from and after Closing under all of the Service
Contracts  relating  to each  Property  that  is the  subject  of such  Closing;
provided,  however,  Seller shall be required to terminate any Service Contracts
which are with any Seller-Related Entities. Subject to the foregoing, and taking
into account any credits or  prorations  to be made pursuant to Article 5 hereof
for payments  coming due after Closing but accruing prior to Closing,  Purchaser
will assume the  obligations  arising  from and after the Closing Date under the
Service Contracts.

         3.6.     Confidentiality.  All information acquired by Purchaser or any
of its  designated  representatives  (including  by way of  example,  but not in
limitation,  the officers,  directors,  shareholders and employees of Purchaser,
and Purchaser's engineers,  consultants,  counsel and potential lenders, and the
officers, directors, shareholders and employees of each of them) with respect to
the Properties,  whether delivered by Sellers or any  representatives of Sellers
or obtained by Purchaser as a result of its inspection and  investigation of the
Properties, examination of the books, records and files of Sellers in respect of
the Properties, or otherwise (collectively,  the "Due Diligence Material") shall
be used  solely for the  purpose  of  determining  whether  the  Properties  are
suitable for  Purchaser's  acquisition  and  ownership  thereof and for no other
purpose  whatsoever.  Prior to  Closing,  the  terms  and  conditions  which are
contained  in this  Agreement  and  all  Due  Diligence  Material  which  is not
published as public knowledge or which is not generally  available in the public
domain shall be kept in strict confidence by Purchaser and


                                       50

Purchase and Sale Agreement





shall  not be  disclosed  to any  individual  or  entity  other  than  to  those
authorized  representatives of Purchaser and Purchaser's  prospective and actual
counsel,  accountants,  professionals,  consultants,  attorneys and lenders, who
need to  know  the  information  for  the  purpose  of  assisting  Purchaser  in
evaluating  the  Properties  for  Purchaser's   potential  acquisition  thereof;
provided,  however,  that  Purchaser  shall have the right to disclose  any such
information  if required by applicable  law or as may be necessary in connection
with any court action or proceeding  with respect to this  Agreement.  Purchaser
shall and hereby  agrees to indemnify and hold Sellers and each of them harmless
from and  against  any and all loss,  liability,  cost,  damage or expense  that
Sellers  or any of them may  suffer  or incur  (including,  without  limitation,
reasonable  attorneys'  fees actually  incurred) as a result of the  unpermitted
disclosure  of any of the Due  Diligence  Material to any  individual  or entity
other  than  an  appropriate   representative   of  Purchaser  and   Purchaser's
prospective  and  actual  counsel,  accountants,   professionals,   consultants,
attorneys  and  lenders,  and/or the use of any Due  Diligence  Material for any
purpose other than as herein contemplated and permitted. The foregoing indemnity
shall not  extend to  disclosure  of any Due  Diligence  Material  (i) as may be
required by applicable  law, or (ii) that is or becomes public  knowledge  other
than by virtue of a breach of  Purchaser's  covenant  under this Section 3.6. If
Purchaser or Sellers elect to terminate this Agreement pursuant to any provision
hereof permitting such  termination,  or if the Closing  contemplated  hereunder
fails to occur for any reason, Purchaser will promptly return to Sellers all Due
Diligence   Material   in  the   possession   of   Purchaser   and  any  of  its
representatives, and destroy all copies, notes or abstracts or extracts thereof,
as well as all copies of any analyses, compilations,  studies or other documents
prepared by  Purchaser or for its use  (whether in written or  electronic  form)
containing or reflecting any Due Diligence Material. In the event of a breach or
threatened  breach by  Purchaser or any of its  representatives  of this Section
3.6, Sellers and each of them shall be entitled,  in addition to other available
remedies,  to an injunction  restraining  Purchaser or its representatives  from
disclosing,  in whole or in part,  any of the Due Diligence  Material and any of
the terms and conditions of this Agreement.  Nothing  contained  herein shall be
construed as prohibiting or limiting  Sellers from pursuing any other  available
remedy,  in  law or in  equity,  for  such  breach  or  threatened  breach.  The
provisions of this Section shall survive any termination of this Agreement.

                                   ARTICLE 4.
                REPRESENTATIONS, WARRANTIES AND OTHER AGREEMENTS

         4.1.     Representations  and   Warranties  of  Sellers.  Each  Seller,
individually,  solely as to such Seller and not as to any other  Seller,  hereby
makes the following representations and warranties to Purchaser:

                  (a)      Organization, Authorization and Consents.

                           (i)      Seller has the right, power and authority to
                                    enter  into this  Agreement  and to sell the
                                    Property  or  Properties  of such  Seller in
                                    accordance  with the terms and provisions of
                                    this    Agreement,    to   engage   in   the
                                    transactions  contemplated in this Agreement
                                    and to  perform  and  observe  the terms and
                                    provisions hereof.


                                       51

Purchase and Sale Agreement





                           (ii)     Wells OP. Wells OP is a duly  organized  and
                                    validly existing limited  partnership  under
                                    the  laws of the  State of  Delaware,  whose
                                    sole  general  partner is Wells Real  Estate
                                    Investment    Trust,    Inc.,   a   Maryland
                                    corporation.

                           (iii)    Wells Real  Estate  Investment  Trust,  Inc.
                                    Wells Real Estate  Investment Trust, Inc. is
                                    a  duly   organized  and  validly   existing
                                    corporation  under  the laws of the State of
                                    Maryland.

                           (iv)     Wells  Fund XII - REIT JV.  Wells Fund XII -
                                    REIT  JV is a  duly  organized  and  validly
                                    existing general  partnership under the laws
                                    of  the  State  of  Georgia,  whose  general
                                    partners  are Wells  Real  Estate  Fund XII,
                                    L.P.  and Wells OP.  Wells Real  Estate Fund
                                    XII,  L.P. is a duly  organized  and validly
                                    existing limited  partnership under the laws
                                    of  the  State  of  Georgia,  whose  general
                                    partners  are Leo F.  Wells,  III and  Wells
                                    Partners,    L.P.,    a   Georgia    limited
                                    partnership.

                           (v)      Wells Partners, L.P. Wells Partners, L.P. is
                                    a duly formed and validly  existing  limited
                                    partnership  under  the laws of the State of
                                    Georgia,  whose  general  partner  is  Wells
                                    Capital, Inc.

                           (vi)     Wells Capital, Inc. Wells Capital, Inc. is a
                                    duly   organized   and   validly    existing
                                    corporation  under  the laws of the State of
                                    Georgia.

                           (vii)    Wells Fund XIII - REIT JV. Wells Fund XIII -
                                    REIT  JV is a  duly  organized  and  validly
                                    existing general  partnership under the laws
                                    of  the  State  of  Georgia,  whose  general
                                    partners  are Wells Real  Estate  Fund XIII,
                                    L.P.  and Wells OP.  Wells Real  Estate Fund
                                    XIII,  L.P. is a duly  organized and validly
                                    existing limited  partnership under the laws
                                    of  the  State  of  Georgia,  whose  general
                                    partners  are Leo F.  Wells,  III and  Wells
                                    Capital, Inc.

                           (viii)   Wells Virginia REIT.  Wells Virginia REIT is
                                    a  duly   organized  and  validly   existing
                                    limited  liability company under the laws of
                                    the State of  Georgia,  whose sole member is
                                    Wells OP.

                           (ix)     Wells Brea.  Wells Brea is a duly  organized
                                    and  validly  existing  limited  partnership
                                    under  the laws of the  State  of  Delaware,
                                    whose sole  general  partner is Wells  Brea,
                                    LLC. Wells Brea, LLC is a duly organized and
                                    validly existing limited  liability  company
                                    under  the laws of the  State  of  Delaware,
                                    whose sole member is Wells OP.

                           (x)      Wells  Westlake.  Wells  Westlake  is a duly
                                    organized  and  validly   existing   limited
                                    partnership  under  the laws of the State of
                                    Texas,  whose sole general  partner is Wells
                                    Real Estate Westlake, TX,


                                       52

Purchase and Sale Agreement





                                    LLC. Wells Real Estate Westlake,  TX, LLC is
                                    a  duly   organized  and  validly   existing
                                    limited  liability company under the laws of
                                    the State of Delaware,  whose sole member is
                                    Wells OP.

                           (xi)     Wells  Farmington  Hills.  Wells  Farmington
                                    Hills is a duly formed and validly  existing
                                    limited  liability company under the laws of
                                    the State of Delaware,  whose sole member is
                                    Wells OP.

                           (xii)    Wells  Kalamazoo.  Wells Kalamazoo is a duly
                                    formed   and   validly    existing   limited
                                    liability  company  under  the  laws  of the
                                    State of  Delaware,  whose  sole  member  is
                                    Wells OP.

                           (xiii)   Wells  EDS.  Wells EDS is a duly  formed and
                                    validly existing limited  partnership  under
                                    the laws of the State of Texas,  whose  sole
                                    general  partner is Wells Real  Estate - Des
                                    Moines,  IA,  LLC.  Wells Real  Estate - Des
                                    Moines, IA, LLC is a duly formed and validly
                                    existing limited liability company under the
                                    laws of the State of  Delaware,  whose  sole
                                    member is Wells OP.

                           (xiv)    Wells Fund XI and XII REIT JV.  Wells  Funds
                                    XI and  XII  REIT  JV is a duly  formed  and
                                    validly existing general  partnership  under
                                    the  laws of the  State  of  Georgia,  whose
                                    general  partners are Wells Real Estate Fund
                                    XI,  L.P.,  a Georgia  limited  partnership,
                                    Wells Real Estate Fund XII,  L.P., a Georgia
                                    limited partnership and Wells OP. Wells Real
                                    Estate  Fund XI,  L.P.  is a duly formed and
                                    validly existing limited  partnership  under
                                    the  laws of the  State  of  Georgia,  whose
                                    general  partners are Leo F. Wells,  III and
                                    Wells Partners, L.P. Wells Partners, L.P. is
                                    a duly formed and validly  existing  limited
                                    partnership  under  the laws of the State of
                                    Georgia  whose  general   partner  is  Wells
                                    Capital,  Inc.  Wells Real Estate Funds XII,
                                    L.P. is a duly  formed and validly  existing
                                    limited  partnership  under  the laws of the
                                    State of Georgia, whose general partners are
                                    Leo F. Wells, III and Wells Partners, L.P.

                  (b)      Action   of  Sellers,   Etc.  Seller  has  taken  all
necessary  action to authorize the execution,  delivery and  performance of this
Agreement,  and upon the  execution and delivery of any document to be delivered
by such Seller on or prior to the  Closing,  this  Agreement  and such  document
shall constitute the valid and binding  obligation and agreement of such Seller,
enforceable  against  such  Seller  in  accordance  with its  terms,  except  as
enforceability  may  be  limited  by  bankruptcy,  insolvency,   reorganization,
moratorium  or similar  laws of  general  application  affecting  the rights and
remedies of creditors.

                  (c)      No  Violations  of  Agreements.  Subject to obtaining
such  consents  or  approvals  of the  ASML  Prime  Ground  Lessor  and the ASML
Sub-Ground  Lessor to the  transfer of the ASML  Property to Purchaser as may be
required under the ASML Prime Ground Lease and the ASML  Sub-Ground  Lease,  and
such consent or approval of the Ingram  Micro  Ground


                                       53

Purchase and Sale Agreement





Lessor to the  transfer  of the Ingram  Micro  Property to  Purchaser  as may be
required under the Ingram Micro Bond Lease,  neither the execution,  delivery or
performance of this Agreement by such Seller,  nor compliance with the terms and
provisions  hereof,  will  result in any  breach  of the  terms,  conditions  or
provisions of, or conflict with or constitute a default under,  or result in the
creation of any lien,  charge or  encumbrance  upon the  respective  Property or
Properties  of such Seller or any portion  thereof  pursuant to the terms of any
indenture,  deed to secure  debt,  mortgage,  deed of trust,  note,  evidence of
indebtedness or any other agreement or instrument by which such Seller is bound,
including, without limitation, the Wells OP Ground Leases, the Ingram Micro Loan
Documents, the ISS Bond Documents and the ISS Bonds.

                  (d)      Litigation.   Except  as  disclosed  on  EXHIBIT  "P"
attached  hereto and made a part hereof,  such Seller has not  received  written
notice of any pending or threatened  suit,  action or  proceeding,  which (i) if
determined  adversely to such Seller,  adversely affects the use or value of the
Property or  Properties  of such  Seller,  (ii)  questions  the validity of this
Agreement or any action taken or to be taken  pursuant  hereto,  (iii)  involves
condemnation  or eminent domain  proceedings  involving  such  Properties or any
portion  thereof,  or (iv)  relates to the  revocation  or  modification  of any
license,  permit or other approval (including zoning and entitlements approvals)
related  to the  development,  ownership,  use or  operation  of  such  Seller's
Property for the current use of such Property.

                  (e)      Existing  Leases.  Other  than the  Wells  OP  Ground
Leases and the Leases listed on EXHIBIT "I" attached hereto, such Seller has not
entered  into any contract or  agreement  with  respect to the  occupancy of the
Property or Properties  of such Seller or any portion or portions  thereof which
will be binding on Purchaser or such Seller's  Property  after the Closing.  The
copies of the Wells OP Ground  Leases and the Leases  affecting  the Property or
Properties of such Seller heretofore  delivered or made available by such Seller
to  Purchaser  are true,  correct and  complete  copies  thereof in all material
respects,  and the Wells OP Ground Leases and the Leases  affecting the Property
or  Properties  of such  Seller have not been  amended  except as  evidenced  by
amendments  similarly delivered and constitute the entire agreement between such
Seller and the tenants or other parties thereto.  Except as set forth in EXHIBIT
"P" attached hereto, such Seller has not given or received any written notice of
any party's  default or failure to comply with the terms and  provisions  of the
Wells OP Ground  Leases and the Leases  affecting  the Property or Properties of
such Seller which remain uncured.

                  (f)      Right  of First Offer or Right of First  Refusal.  No
tenant  of such  Seller or any  other  person or entity  has any right or option
(including  any right of first  refusal or right of first offer) to purchase all
or any  part of the  Property  or  Properties  of such  Seller  or any  interest
therein, except as follows:

                           (i)      the  right  of  first  refusal  of  Bank  of
                                    America  NT & SA, as tenant  under its Lease
                                    affecting the Bank of America  Property,  to
                                    purchase  such  Property  upon the terms set
                                    forth  in its  Lease,  and with  respect  to
                                    which Seller  delivered  the Bank of America
                                    ROFR Notice to such  tenant,  dated  January
                                    11, 2005;


                                       54

Purchase and Sale Agreement





                           (ii)     the right of Capital One Services,  Inc., as
                                    tenant  under each of its  Leases  affecting
                                    the Capital One  Property,  to purchase  the
                                    respective buildings subject to such Leases,
                                    except that in accordance  with the terms of
                                    such  Leases,  such  right of first  refusal
                                    does not  apply in the  event  the  landlord
                                    desires to sell the building  subject to any
                                    such Lease in  conjunction  with the sale of
                                    any other  building  or  buildings  owned by
                                    landlord  or  in  which   landlord   has  an
                                    interest;

                           (iii)    the  right of  Chrysler  Financial  Company,
                                    LLC, as tenant under its Lease affecting the
                                    Daimler Chrysler Property,  to purchase such
                                    Property pursuant to the terms of its Lease,
                                    and with respect to which  Seller  delivered
                                    an  offer  notice  to  such  tenant,   dated
                                    November 1, 2004;

                           (iv)     the  right of Dana  Corporation,  as  tenant
                                    under   its   Lease   affecting   the   Dana
                                    (Farmington  Hills)  Property,  to  purchase
                                    such Property in  accordance  with the terms
                                    of such  Lease,  and with  respect  to which
                                    Seller  delivered  an offer  notice  to such
                                    tenant,  dated  November  1, 2004,  and such
                                    tenant  delivered  a  letter  to  Seller  in
                                    response thereto, dated November 5, 2004;

                           (v)      the  right of Dana  Corporation,  as  tenant
                                    under   its   Lease   affecting   the   Dana
                                    (Kalamazoo)   Property,   to  purchase  such
                                    Property  in  accordance  with the  terms of
                                    such Lease, and with respect to which Seller
                                    delivered  an offer  notice to such  tenant,
                                    dated  November  1,  2004,  and such  tenant
                                    delivered  a letter to  Seller  in  response
                                    thereto, dated November 5, 2004;

                           (vi)     the right of The Dial Corporation, as tenant
                                    under its Lease affecting the Dial Property,
                                    to purchase such Property in accordance with
                                    the terms of such Lease; provided,  however,
                                    that in  accordance  with the  terms of such
                                    Lease,  such  right  does  not  apply  to  a
                                    portfolio sale of properties;

                           (vii)    the right of Experian Information Solutions,
                                    Inc.,  as tenant  under its Lease  affecting
                                    the  Experian  Property,  to  purchase  such
                                    Property   after  the   expiration   of  the
                                    "Primary  Term" of such  Lease  (as  defined
                                    therein)  in  accordance  with the terms and
                                    provisions of such Lease, which Primary Term
                                    has not yet expired;

                           (viii)   the right of Gartner,  Inc., as tenant under
                                    its  Lease  affecting  the  Gartner  Surface
                                    Parking  Property,  to purchase  the Gartner
                                    Property  in  accordance  with the  terms of
                                    such Lease, and with respect to which Seller
                                    delivered  an offer  notice to such  tenant,
                                    dated December 8, 2004;


                                       55

Purchase and Sale Agreement





                           (ix)     the right of Ingram  Micro  L.P.,  as tenant
                                    under its Lease  affecting  the Ingram Micro
                                    Property,   to  purchase  such  Property  in
                                    accordance with the terms of such Lease, and
                                    with  respect to which  Seller  delivered an
                                    offer notice to such tenant,  dated November
                                    1, 2004;

                           (x)      the   right   of   Kerr-McGee   Oil   &  Gas
                                    Corporation,   as  tenant  under  its  Lease
                                    affecting  the  Kerr  McGee   Property,   to
                                    purchase such  Property in  accordance  with
                                    the terms of such Lease, and with respect to
                                    which  Seller  delivered  an offer notice to
                                    such tenant, dated November 1, 2004;

                           (xi)     the right of Merisel  Properties,  Inc.,  as
                                    the  Declarant  under  the  Lucent  Property
                                    Declaration  affecting the Lucent  Property,
                                    to purchase such Property in accordance with
                                    the  terms  of said  Declaration,  and  with
                                    respect to which  Seller  delivered an offer
                                    notice to said Declarant,  dated December 6,
                                    2004; and

                           (xii)    the   right  of  Nissan   Motor   Acceptance
                                    Company, as tenant under its Lease affecting
                                    the  Nissan   Property,   to  purchase  such
                                    Property  in  accordance  with the  terms of
                                    such Lease, and with respect to which Seller
                                    delivered  an offer  notice to such  tenant,
                                    dated November 1, 2004.

         As of the Effective Date hereof, none of the tenants named above or the
Declarant  named  above  (each,  a  "ROFO/ROFR  Party",  and  any  one or  more,
"ROFO/ROFR  Parties") to whom an offer notice was sent by Sellers has  exercised
its right of first offer or right of first refusal by written notice received by
any of the  Sellers.  Except as disclosed  in this  Agreement,  Sellers have not
received from or given any written  notice to any of the ROFO/ROFR  Parties with
respect to such rights of first  offer or rights of first  refusal in respect of
the transactions contemplated under this Agreement.

                  (g)      Leasing  Commissions.  There  are no lease  brokerage
agreements,  leasing  commission  agreements or other  agreements  providing for
payments of any amounts for leasing activities or procuring tenants with respect
to the  Properties of such Seller or any portion or portions  thereof other than
as disclosed in EXHIBIT "C" attached hereto (the "Commission  Agreements"),  and
all leasing  commissions and brokerage fees accrued or due and payable under the
Commission  Agreements  with respect to the  Properties of such Seller as of the
date  hereof  and  at  the  Closing   have  been  or  shall  be  paid  in  full.
Notwithstanding  anything to the contrary  contained herein,  (i) the respective
obligations of Sellers and Purchaser with respect to certain leasing commissions
are set forth on  EXHIBIT  "U"  attached  hereto,  and (ii)  Purchaser  shall be
responsible for the payment of all leasing  commissions  payable for (a) any new
leases  entered into after the Effective Date that have been approved (or deemed
approved)  by  Purchaser,  and (b) except as  expressly  otherwise  provided  on
EXHIBIT "U" attached hereto, the


                                       56

Purchase and Sale Agreement





renewal,  expansion or extension of any Leases existing as of the Effective Date
and exercised or effected after the Effective Date.

                  (h)      Bond  Documents.  The copies of the Ingram Micro Loan
Documents,  the ISS Bond  Documents  and the ISS Bonds  (the  "Bond  Documents")
heretofore  delivered  or made  available  to  Purchaser  are true,  correct and
complete  copies  thereof in all  material  respects.  Wells OP has not given or
received any written notice of any party's default or failure to comply with the
terms and provisions of the Bond Documents.

                  (i)      Property  Management  Agreements.  Except  for  those
certain  management  agreements  more  particularly  described  on  EXHIBIT  "Q"
attached  hereto and made a part hereof  (each and any one or more,  a "Property
Management  Agreement" or the  "Property  Management  Agreements"),  there is no
agreement  currently in effect  relating to the  management of the Properties of
such  Seller by any  third-party  management  company;  and except for the Kraft
Foods Property Management Agreement,  all of such Property Management Agreements
are terminable  without  penalty on or before the last day of the calendar month
following thirty (30) days prior written notice of termination,  and except that
the Kraft Foods Property Management Agreement is terminable without penalty upon
sixty (60) days prior written notice.

                  (j)      Taxes and Assessments.  Except as may be set forth on
EXHIBIT "R" attached  hereto and made a part hereof,  Seller has not filed,  and
has not retained  anyone to file,  notices of protests  against,  or to commence
action to review,  real  property tax  assessments  against any Property of such
Seller.

                  (k)      Compliance  with Laws. To such Seller's knowledge and
except as set forth on EXHIBIT "P",  such Seller has received no written  notice
alleging any violations of law (including any Environmental  Law),  municipal or
county ordinances, or other legal requirements with respect to the Properties of
such Seller where such violations remain outstanding.

                  (l)      Other Agreements. To such Seller's knowledge,  except
for the  Leases,  the  Wells  OP  Ground  Leases,  the  Service  Contracts,  the
Commission Agreements,  the Management Agreements,  and the Permitted Exceptions
with respect to the Properties of such Seller,  there are no leases,  management
agreements,  brokerage  agreements,  leasing  agreements or other  agreements or
instruments  in force or effect  that grant to any  person or any entity  (other
than such  Seller)  any right,  title,  interest or benefit in and to all or any
part of the  Properties  of such  Seller  or any  rights  relating  to the  use,
operation,  management,  maintenance  or  repair  of  all  or  any  part  of the
Properties  of such Seller  which will  survive  the Closing or be binding  upon
Purchaser  other than those which  Purchaser has agreed in writing to assume (or
is deemed to have  agreed to assume) or which are  terminable  upon  thirty (30)
days notice without payment of premium or penalty.

                  (m)      Seller  Not a Foreign  Person.  Such  Seller is not a
"foreign person" which would subject Purchaser to the withholding tax provisions
of Section 1445 of the Internal Revenue Code of 1986, as amended.


                                       57

Purchase and Sale Agreement





                  (n)      Employees.  Such Seller has no  employees  to whom by
virtue of such employment Purchaser will have any obligation after the Closing.

                  (o)      Security  Deposits. Attached hereto as EXHIBIT "X" is
a chart of all Security  Deposits  currently held by Sellers with respect to the
Property or Properties owned by such Sellers.

                  (p)      Adjoining   Properties.   No  Seller  owns  any  real
property that is adjacent to any of the Properties.

                  (q)      Lucent  Undeveloped Parcel. To the knowledge of Wells
OP,  Wells OP has not  encumbered  that certain  portion of the Lucent  Property
described as Lot 1-B-II on Exhibit "A-1"  attached  hereto in any fashion except
as may be disclosed in that certain Title Commitment issued by the Title Company
to Purchaser  with respect to that portion of the Lucent  Property  described as
Lot 1-B-I on Exhibit "A-1" attached hereto; and Wells OP has no knowledge of any
exceptions  affecting  said Lot 1-B-II that do not also affect said Lot 1-B-I as
disclosed in said Title Commitment.

                  (r)      Tenant  Allowances and Inducements.  To such Seller's
knowledge,  and except as disclosed in this Agreement and provisions for payment
of  which  are  contained  elsewhere  in this  Agreement,  there  are no  tenant
allowances or  inducements  outstanding or unpaid to any tenant of such Seller's
Property as of the Effective  Date hereof and as of the date of Closing;  and if
any such tenant allowance or other inducement shall be outstanding and unpaid as
of the date of Closing in accordance with the terms of such tenant's Lease, such
Seller  agrees  to pay the same to  Purchaser  at  Closing  by means of a credit
against the Purchase Price of such Property.

         The  representations  and  warranties  made in this  Agreement  by such
Seller shall be continuing  and shall be deemed made as of the Effective Date of
this Agreement, and remade by such Seller as of the Closing Date in all material
respects,  with the same force and  effect as if made on, and as of,  such date,
subject to such Seller's right to update such  representations and warranties by
written  notice  to  Purchaser  and in the  certificate  of  such  Seller  to be
delivered pursuant to Section 5.1(o) hereof.

         Except as  otherwise  expressly  provided in this  Agreement  or in any
documents to be executed  and  delivered by Sellers to Purchaser at the Closing,
none of the Sellers has made, and Purchaser has not relied on, any  information,
promise, representation or warranty, express or implied, regarding the Property,
whether made by Sellers, or any of them, on behalf of Sellers or any of them, or
otherwise,   including,  without  limitation,  the  physical  condition  of  the
Properties,  the financial  condition of the tenants under the Leases, the Wells
OP Ground  Leases,  title to or the boundaries of the  Properties,  pest control
matters,  soil  conditions,  the  presence,  existence  or absence of  hazardous
wastes,  toxic  substances  or  other  environmental  matters,  compliance  with
building,  health,  safety,  land use and zoning laws,  regulations  and orders,
structural and other engineering characteristics, traffic patterns, market data,
economic conditions or projections,  past or future economic  performance of the
tenants  or  the  Properties,  and  any  other  information  pertaining  to  the
Properties or the market and physical  environments  in which the Properties are
located.  Purchaser  acknowledges  (i) that  Purchaser  has  entered  into  this
Agreement with the


                                       58

Purchase and Sale Agreement





intention  of  making  and  relying  upon  its  own  investigation  or  that  of
Purchaser's own consultants  and  representatives  with respect to the physical,
environmental,  economic  and legal  condition of the  Properties  and (ii) that
Purchaser is not relying upon any statements,  representations  or warranties of
any kind,  other than those  specifically  set forth in this Agreement or in any
document to be executed and  delivered by Sellers or any of them to Purchaser at
the Closing,  made (or purported to be made) by Sellers or any of them or anyone
acting or  claiming  to act on behalf of Sellers or any of them.  Purchaser  has
inspected  the  Properties  and has  become  fully  familiar  with the  physical
condition  thereof and,  subject to the terms and conditions of this  Agreement,
shall purchase the Properties in their "as is" condition,  "with all faults," on
the Closing Date. The provisions of this paragraph shall survive the Closing for
a period of one hundred eighty (180) days following the Closing.

         4.2.     Knowledge  Defined.  All  references in this  Agreement to the
"knowledge of Wells OP" or "to Wells OP's  knowledge" or "to the "knowledge of a
Wells Affiliate" or "to a Wells  Affiliate's  knowledge" or to the "knowledge of
such  Seller" or "to such  Seller's  knowledge",  shall refer only to the actual
knowledge of David H. Steinwedell,  Chief Investment  Officer,  and Frank Parker
Hudson, Managing Director of Dispositions, for Sellers, and of the persons named
on EXHIBIT  "S"  attached  hereto and made a part  hereof  with  respect to each
Property  owned by such  Seller,  each of which  persons  named on the  attached
EXHIBIT "S" whom has been actively  involved in the  management of such Seller's
business  in respect of the  designated  Property  or  Properties  owned by such
Seller in the capacity as Asset Manager for such Seller.  The term "knowledge of
Wells OP" or "to Wells  OP's  knowledge"  or to the "best  knowledge  of a Wells
Affiliate" or "to a Wells  Affiliate's  knowledge" or to the "best  knowledge of
such  Seller"  or "to such  Seller's  knowledge",  shall  not be  construed,  by
imputation  or  otherwise,  to refer to the  knowledge of Wells OP or such Wells
Affiliate, or any affiliate of Wells OP or such Wells Affiliate, or to any other
partner,   member,   beneficial  owner,  officer,   director,   agent,  manager,
representative or employee of Wells OP or such Wells Affiliate,  or any of their
respective  affiliates,  or to impose on David H.  Steinwedell  or Frank  Parker
Hudson or any of the individuals  named on the attached  EXHIBIT "S" any duty to
investigate the matter to which such actual  knowledge,  or the absence thereof,
pertains.  There  shall  be no  personal  liability  on the  part  of  David  H.
Steinwedell,  Frank  Parker  Hudson  or the  individuals  named on the  attached
EXHIBIT "S"  arising out of any  representations  or  warranties  made herein or
otherwise.

         4.3.     Covenants and Agreements of Sellers.

                  (a)      Leasing  Arrangements.  During the  pendency  of this
Agreement,  no Seller will enter into any lease affecting the Properties of such
Seller,  or modify or amend in any respect,  or  terminate,  any of the existing
Leases or the Wells OP Ground  Leases  affecting  the  Properties of such Seller
without Purchaser's prior written consent in each instance, which consent, prior
to the end of the Inspection Period, shall not be unreasonably withheld, delayed
or conditioned and which shall be deemed given unless withheld by written notice
to such Seller given within five (5) Business Days after Purchaser's  receipt of
such  Seller's  written  request  therefor,  each of  which  requests  shall  be
accompanied by a copy of any proposed  modification  or amendment of an existing
Lease,  Wells OP Ground  Leases or of any new lease that such  Seller  wishes to
execute  between the  Effective  Date and the Closing Date,  including,  without
limitation, a description of any Tenant Inducement Costs and leasing commissions
associated


                                       59

Purchase and Sale Agreement





with any proposed  renewal or expansion of an existing  Lease or Wells OP Ground
Lease or with any such new lease.  If  Purchaser  fails to notify such Seller in
writing of its approval or disapproval within said five (5) Business Day period,
such failure by Purchaser shall be deemed to be the approval of Purchaser. After
the end of the Inspection  Period and Purchaser's  timely deposit of the Earnest
Money,  Seller  shall not enter into any lease  affecting  any  Property of such
Seller,  or modify or amend in any  respect,  or  terminate  any of the existing
Leases or the Wells OP Ground Leases without  Purchaser's  prior written consent
in each instance,  which consent may be withheld in Purchaser's sole discretion.
At Closing,  Purchaser  shall  reimburse  each Seller for any Tenant  Inducement
Costs, leasing commissions or other expenses,  including  reasonable  attorneys'
fees, actually incurred by such Seller pursuant to a renewal or expansion of any
existing  Lease or Wells OP Ground  Lease or new  lease  approved  by  Purchaser
hereunder.

                  (b)      New Contracts. During the pendency of this Agreement,
except for the Capital One Lake Easement Deed and the Kerr McGee Sewer  Easement
(which sewer easement agreement has been circulated for execution),  none of the
Sellers  will enter into any  contract,  or modify,  amend,  renew or extend any
existing contract,  that will be an obligation  affecting the Properties of such
Seller or any part thereof  subsequent to the Closing without  Purchaser's prior
written  consent in each  instance  (which  Purchaser  agrees not to withhold or
delay  unreasonably),  except  contracts  entered into in the ordinary course of
business that are terminable  without cause (and without  penalty or premium) on
thirty (30) days (or less) notice.

                  (c)      Operation  of  Property.  During the pendency of this
Agreement,  each Seller shall  continue to operate the Properties of such Seller
in a good and businesslike fashion consistent with such Seller's past practices.

                  (d)      Insurance.  During the  pendency  of this  Agreement,
each Seller shall, at such Seller's expense,  continue to maintain the insurance
policies  covering the  Improvements of such Seller which are currently in force
and effect.

                  (e)      Tenant  Estoppel  Certificates.   Each  Seller  shall
endeavor in good faith (but without  obligation to incur any cost or expense) to
obtain and  deliver to  Purchaser  prior to  Closing a written  Tenant  Estoppel
Certificate  in the form  attached  hereto as EXHIBIT  "M" signed by each tenant
under each of the Leases affecting the Properties of such Seller;  provided that
delivery of such signed  Tenant  Estoppel  Certificates  shall be a condition of
Closing only to the extent set forth in Section 6.1(c)  hereof;  and in no event
shall the  inability or failure of such Seller to obtain and deliver said Tenant
Estoppel  Certificates  (each Seller  having used its good faith  efforts as set
forth above as to tenants  under Leases of the  Properties  of such Seller) be a
default of such Seller  hereunder.  In addition to the foregoing,  Sellers shall
use their  good  faith  efforts  (but  without  obligation  to incur any cost or
expense)  to  have  the  tenants  of  certain  of  the  Properties  confirm  the
information  requested by Purchaser as set forth on Exhibit "V" attached  hereto
and made a part hereof in such tenants' respective tenant estoppel certificates;
it being specifically  understood and agreed,  however, that the confirmation by
said tenants of the applicable information on the attached Exhibit "V" except as
specifically  set forth to the contrary in Section  6.1(c) hereof with regard to
certain  information   identified  as  "critical"  as  to  the  Tenant  Estoppel
Certificates for the Alstom Property, the AT&T (PA) Property and the Capital One
Property,  shall not be a condition  to Closing and the failure or  inability of
Sellers to


                                       60

Purchase and Sale Agreement





obtain such written  confirmation  from said tenants  (Sellers having used their
good faith efforts as aforesaid) shall not be a default of Sellers.

                  (f)      Lease    Guarantor   Estoppel   Certificates.    Each
applicable Seller shall endeavor in good faith (but without  obligation to incur
any cost or  expense)  to obtain  and  deliver to  Purchaser  prior to Closing a
written Lease  Guarantor  Estoppel  Certificate  in the form attached  hereto as
EXHIBIT "T" signed by each Lease Guarantor with respect to the guaranty given or
made by such  Lease  Guarantor  with  respect to certain  Leases  affecting  the
Properties  of such  Seller;  provided  that the  delivery of such signed  Lease
Guarantor  Estoppel  Certificates  shall be a condition  of Closing  only to the
extent set forth in Section 6.1(d)  hereof,  and in no event shall the inability
or failure of such Seller to obtain and deliver  said Lease  Guarantor  Estoppel
Certificates  (each applicable  Seller having used its good faith efforts as set
forth above as to the Lease  Guarantor(s)  of Leases of the  Properties  of such
Seller) be a default of such Seller hereunder.

                  (g)      Highwoods  Estoppel  Certificates.   Wells  OP  shall
endeavor in good faith (but without  obligation to incur any cost of expense) to
obtain and deliver to Purchaser prior to Closing a written estoppel  certificate
in the form attached hereto as EXHIBIT "Y" signed by Highwoods Properties, Inc.,
a Maryland  corporation,  with respect to each of the Highwoods  Rental Guaranty
Agreements  given and made with respect to certain Leases  affecting the Capital
One Property;  provided that the delivery of the Highwood Estoppel  Certificates
shall be a condition of Closing  only to the extent set forth in Section  6.1(e)
hereof, and in no event shall the inability or failure of Wells OP to obtain and
deliver the Highwoods Estoppel Certificates (Wells OP having used its good faith
efforts as set forth above) be a default of Wells OP hereunder.

                  (h)      Association Estoppels. Sellers shall endeavor in good
faith  (but  without  obligation  to incur any cost or  expense  other than such
incidental cost or expense as may be specifically contemplated in the applicable
Declaration)  to obtain  and  deliver  to  Purchaser  prior to Closing a written
Association Estoppel Certificate signed on behalf of the applicable Associations
with respect to the  Declarations  more  particularly  described on the attached
EXHIBIT  "D";  provided  that in no event shall the  inability or failure of any
Seller to obtain and deliver said  Association  Estoppel  Certificates  (Sellers
having used their respective good faith efforts as set forth above) be a default
of such Seller hereunder.

                  (i)      Declarant  Estoppels.  Sellers shall endeavor in good
faith  (but  without  obligation  to incur any cost or  expense  other than such
incidental cost or expense as may be specifically contemplated in the applicable
Declaration)  to obtain  and  deliver  to  Purchaser  prior to Closing a written
Declarant Estoppel  Certificate  signed by the applicable  Declarant under those
certain  Declarations more  particularly  described on the attached EXHIBIT "D";
provided that in no event shall the inability or failure of any Seller to obtain
and deliver said  Declarant  Estoppel  Certificates  (Sellers  having used their
respective  good faith  efforts as set forth  above) be a default of such Seller
hereunder.

                  (j)      Ground  Lessor Estoppels.  Wells OP shall endeavor in
good faith (but without  obligation  to incur any cost or expense) to obtain and
deliver to Purchaser prior to


                                       61

Purchase and Sale Agreement





Closing a written  Ground  Lessor  Estoppel  Certificate  in the forms  attached
hereto as EXHIBIT "H" signed by the  applicable  ground  lessors  under the ASML
Sub-Ground  Lease, the Ingram Micro Bond Lease and the ISS Bond Lease;  provided
that in no event  shall the  inability  or  failure  of Wells OP to  obtain  and
deliver said Ground Lessor Estoppel  Certificates (Wells OP having used its good
faith efforts as set forth above) be a default of Wells OP hereunder.

                  (k)      Other  Third Party Estoppels.  Sellers shall endeavor
in good faith (but  without  obligation  to incur any cost or expense) to obtain
and deliver to Purchaser prior to Closing a written estoppel  certificate signed
on behalf of any other third party as may be  reasonably  requested by Purchaser
and in such form as may be  reasonably  requested by  Purchaser  (each an "Other
Third  Party  Estoppel  Certificate"  and any one or more,  "Other  Third  Party
Estoppel Certificates"),  including,  without limitation,  estoppel certificates
with respect to any Tax Abatement  Agreements  which,  by their  express  terms,
contain provisions for the giving of estoppel certificates;  provided that in no
event shall the  inability  or failure of any Seller to obtain and deliver  said
Other Third Party Estoppel  Certificates  (Sellers having used their  respective
good  faith  efforts  as set  forth  above)  be a  default  of such  Seller or a
condition to Closing;  and provided further that it is expressly  understood and
agreed that any one or more  estoppel  certificates  with respect to any of said
Tax Abatement Agreement may not be available, if at all, until after Closing.

                  (l)      ROFR Notice to Bank of America. Sellers and Purchaser
mutually  acknowledge  and  agree  that  prior  to the  Effective  Date  of this
Agreement,  Wells Brea  delivered  an offer  notice  (the "Bank of America  ROFR
Notice") to Bank of America NT & SA, the tenant of the Bank of America Property,
notifying it of Purchaser's  offer to purchase the Bank of America  Property for
the Purchase Price provided  hereunder for said Property,  and containing  other
relevant terms of Purchaser's  offer to purchase the Bank of America Property as
required  pursuant  to the  terms of said  tenant's  right of first  refusal  to
purchase said  Property as set forth in its Lease,  and offering Bank of America
NT & SA the right to  purchase  the Bank of  America  Property  on the terms set
forth in its Lease and the Bank of America  ROFR  Notice.  Wells Brea shall keep
Purchaser  promptly apprised of any written response received by Wells Brea from
Bank of America NT & SA in response to such notice.

                  (m)      SNDAs.  Sellers  shall  endeavor  in good  faith (but
without  obligation  to incur  any cost or  expense)  to  obtain  from the Major
Tenants  of  the  Properties   subordination,   nondisturbance   and  attornment
agreements in the form reasonably requested by Purchaser's lender or in the form
attached to such  tenants'  respective  Leases  ("SNDA" or  "SNDAs");  provided,
however, that in no event shall the inability or failure of any Seller to obtain
and deliver said SNDAs (Sellers having used their  respective good faith efforts
as set forth above) be a default of such Seller hereunder;  and provided further
that Purchaser shall deliver to Sellers the completed forms of all such SNDAs as
soon as reasonably practicable following the Effective Date of this Agreement.

                  (n)      Termination   of   Existing    Property    Management
Agreements. Following the Effective Date of this Agreement and prior to Closing,
Sellers  agree  to give  written  notice  to each of the  Property  Managers  of
termination of each such Property Manager's Property Management Agreement,  such
termination to be effective only in the event of the closing of the


                                       62

Purchase and Sale Agreement





purchase and sale of the Property  between such Seller and Purchaser;  provided,
however,  that Purchaser  acknowledges  and agrees that the respective  Property
Management Agreements for the Allstate Property,  the Alstom Power Property, the
AT&T (OK) Property,  the Daimler Chrysler Property,  the IKON Property, the John
Wiley Property, the Kerr McGee Property, the Pacificare Property, the Transocean
Property and the Travelers  Express  Property provide that the effective date of
the termination of the engagement of the respective  Property Manager thereunder
is the last day of the calendar month  occurring at least thirty (30) days after
the delivery of written notice of termination,  and that the Property Management
Agreement for the Kraft Foods  Property  provides that the effective date of the
termination of the engagement of the Property Manager thereunder is the last day
of the calendar  month  occurring at least sixty (60) days after the delivery of
written notice of termination. At Closing, Purchaser hereby agrees to assume the
obligations  of each  applicable  Seller under all of said  Property  Management
Agreements  first accruing on or after the Closing through the effective date of
such  termination  of each such  Property  Management  Agreement.  Following the
Effective Date of this Agreement and prior to Closing,  Purchaser shall have the
right to negotiate in good faith new property management  agreements and related
agreements with the Property Manager,  using Purchaser's standard forms for same
and  incorporating the same or substantially  equivalent  economic terms as each
such  Property  Manager's  Property  Management  Agreement  with the  applicable
Seller.  Sellers and Purchaser mutually acknowledge and agree that the execution
and  delivery  by  any  Property  Manager  of  replacement  property  management
agreements and related  agreements on Purchaser's forms shall not be a condition
to Closing,  and Sellers shall have no obligations  whatsoever to Purchaser with
respect to Purchaser's negotiations with the Property Managers.

                  (o)      Second  Amendment to Gartner  Office  Lease.  Sellers
shall  endeavor  in good  faith  (but  without  obligation  to incur any cost or
expense) to obtain the execution  and delivery by Gartner,  Inc., at or prior to
Closing of the Gartner  Property,  of that certain  Second  Amendment to Gartner
Office Lease  substantially in the form attached hereto as Exhibit "CC" and made
a part hereof (the "Gartner Lease Amendment"),  with such modifications  thereto
as may be  reasonably  approved  requested  by  Gartner,  Inc.  and  approved by
Purchaser; provided, however, that the failure or inability of Sellers to obtain
and deliver the Gartner Lease  Amendment by Closing  (Sellers  having used their
good  faith  efforts  as  aforesaid)  shall in no event be deemed a  default  of
Sellers.

                  (p)      Letter  Amendment to ISS Building III Lease.  Sellers
shall  endeavor  in good  faith  (but  without  obligation  to incur any cost or
expense) to obtain the  execution  and  delivery by Internet  Security  Systems,
Inc.,  at or  prior to  Closing  of the ISS  Property,  of that  certain  letter
amendment  to the ISS  Building  III Lease  substantially  in the form  attached
hereto as Exhibit "DD" and made a part hereof (the "ISS Lease Amendment"),  with
such modifications  thereto as may be reasonably  approved requested by Internet
Security Systems,  Inc. and approved by Purchaser;  provided,  however, that the
failure or inability of Sellers to obtain and deliver the ISS Lease Amendment by
Closing  (Sellers having used their good faith efforts as aforesaid) shall in no
event be deemed a default of Sellers.

                  (q)      Alstom Power  Property / French Drain Work.  Prior to
the Effective  Date hereof,  Wells Virginia REIT has disclosed to Purchaser that
certain work at the Alstom Power Property, which consists of the installation of
a so-called "french drain" system as more


                                       63

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particularly  shown in the plans attached hereto as Exhibit "EE" and made a part
hereof,  has been planned and is in progress,  with all such work anticipated to
be  completed  on or about  February  22,  2005,  as set  forth on the  schedule
included as a part of the  attached  Exhibit "EE" (the  "Alstom  Power  Property
Drain Work"),  and that such work is being prosecuted by and under the direction
of  Wells  Virginia  REIT's  developer  of the  Alstom  Power  Property,  ADEVCO
Corporation.  As between Sellers and Purchaser, Wells Virginia REIT shall be and
remain  responsible  for assuring that the Alstom Power  Property  Drain Work is
completed in accordance with the plans  therefor,  and in a good and workmanlike
and lien-free manner and in accordance with all applicable laws. Within ten (10)
days following the date of  substantial  completion (as certified by the general
contractor  performing  such  work),  representatives  of Wells  Virginia  REIT,
Purchaser and the tenant of the Alstom Power  Property  shall jointly  conduct a
walk-through  and inspection of the Alstom Power Drain Work and jointly  prepare
and approve a list of punch list items to be  completed in  accordance  with the
terms hereof. Wells Virginia REIT shall promptly and with due diligence complete
all such punch list items.  If for any reason beyond the  reasonable  control of
Wells  Virginia REIT, any portion of the Alstom Power Property Drain Work is not
so completed prior to the Closing Date, Wells Virginia REIT agrees that it shall
remain  responsible for assuring the completion of all of such work as aforesaid
following the Closing of such Property; and in such event the provisions of this
subsection shall survive the Closing.

                  (r)      Consents  to Assignment of Tax Abatement  Agreements,
Bond  Documents  and  Leasehold   Interests.   Sellers  and  Purchaser  mutually
acknowledge  and  agree  that  the  transfer  of  certain  of the Tax  Abatement
Agreements   to   Purchaser   requires  the  consent  and  approval  of  certain
governmental  or  quasi-governmental  entities,  that the transfer of the Ingram
Micro Bond Lease to  Purchaser  requires  the  consent  and  approval of certain
governmental  and  quasi-governmental  entities,  that the  transfer of the ASML
Property to Purchaser requires the approval of the ASML Ground Lessors, and that
the transfer of the ISS Bonds requires  action by the  Development  Authority of
Fulton  County,  Georgia.  Sellers and Purchaser  shall  cooperate and use their
respective good faith efforts to prepare and the necessary applications for seek
such  approvals and consents,  including,  without  limitation,  the delivery by
Purchaser to Sellers as  expeditiously  as possible  information  regarding  the
ownership  structures  of  Purchaser's  acquisition  entities  for the  affected
Properties. Subject to the foregoing, Sellers and Purchaser shall seek to obtain
such approvals and consents prior to Closing.  In the event,  however,  that the
transfer  and  assignment  of the Tax  Abatement  Agreements  for the Kerr McGee
Property and the Pacificare Property have not been obtained prior to the outside
date for  Closing,  or  replacement  original  ISS  Bonds  issued in the name of
Purchaser or a  replacement  Ingram Micro  Industrial  Development  Revenue Note
shall not have been  obtained  prior to the outside date for  Closing,  the same
shall not be  conditions to Closing;  and the parties  shall  continue to pursue
obtaining such approvals and the issuance of such  replacement ISS Bonds and the
replacement Ingram Micro Industrial Development Revenue Note as expeditiously as
practicable  following the Closing of said  Properties.  The  provisions of this
subsection shall survive the Closing.

                  (s)      Construction of Gartner  Surface  Parking  Expansion.
Wells  Funds  XI and XII REIT JV and  Wells  OP  hereby  covenant  and  agree to
construct  and  install  no fewer than one  hundred  twenty-five  (125)  surface
parking spaces on the Gartner  Surface  Parking  Property in accordance with the
Gartner  Parking  Plans  and  all  applicable   governmental   laws,   statutes,


                                       64

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ordinances, codes, rules and regulations (such work is herein referred to as the
"Gartner  Parking Work"),  with all of such work to be completed within the time
and otherwise in accordance with the terms of the Gartner Parking Lease.  All of
such Gartner Parking Work shall be performed in a good and  workmanlike  manner,
employing reasonable standards of construction,  in no event later June 30, 2005
(the "Delivery  Date" as defined in the Gartner Parking Lease) (subject to force
majeure in accordance  with the Gartner  Parking Lease) and on a lien-free basis
and in  accordance  with the terms of the  Gartner  Parking  Lease.  Purchaser's
engineer  shall be permitted  to inspect the Gartner  Parking Work on a periodic
basis  until  the  completion   thereof.   For  purposes  hereof,   "substantial
completion" shall mean the date upon which the work  contemplated  herein and by
the  Gartner  Parking  Lease  and the  Gartner  Parking  Plans  shall  have been
substantially  completed in  accordance  with the standards set forth herein and
therein  (inclusive of  landscaping,  to the extent  landscaping can be feasibly
installed due to the season),  as evidenced by a certificate to such effect from
the engineer who prepared  plans for such work,  and subject only to minor punch
list items approved by Gartner, Inc., as tenant, and Purchaser.  Within ten (10)
days  following  the date of  substantial  completion  (as certified by Seller's
engineer),  representatives  of such  Sellers,  Purchaser  and said tenant shall
jointly  conduct a walk-through  and inspection of the Gartner  Parking Work and
jointly  prepare  and  approve a list of punch  list  items to be  completed  in
accordance with the terms hereof (the "Gartner Punch List Items").  Such Sellers
shall  promptly and with due  diligence  complete such Gartner Punch List Items.
Upon final  completion of such work,  such Sellers shall assign to Purchaser all
warranties and guaranties given or made in connection with such work, including,
without  limitation,  a  one-year  guaranty  of such work  given by the  general
contractor  performing  such work,  and such Sellers shall provide to Purchaser:
(i) such Sellers' engineer's certificate of final completion, (ii) copies of all
governmental  permits or approvals  required to be issued in connection with the
construction and use of the additional surface parking  improvements;  (iii) the
sworn final lien waiver and affidavit of the general contractor, (iv) final lien
waivers from all contractors,  subcontractors and materialmen; and (v) any other
information or documentation  reasonably requested by Purchaser and available at
no additional cost or expense to Sellers to evidence the lien-free completion of
construction  and payment of all costs associated with the Gartner Parking Work.
In addition to the  foregoing,  promptly  following the final  completion of the
Gartner  Parking Work,  but in no event later than July 15, 2005,  Sellers shall
pay to  Purchaser an amount equal to the  remaining  balance of the  $468,000.00
tenant allowance  provided under the first amendment to the Gartner Office Lease
after deducting  therefrom,  as contemplated  pursuant to Section 5 of the first
amendment to the Gartner  Office Lease (x) the initial  $5,000.00 for payment of
rent under the Gartner  Parking Lease,  and (y) the cost of the Gartner  Parking
Work (including, without limitation, the actual cost of the fixed price contract
and a five  percent  (5%)  construction  management  fee,  all subject to and in
accordance  with  the  applicable  provisions  of the  Gartner  Parking  Lease),
together  with copies of all  invoices,  bills and other  reasonable  supporting
information relating to the cost of the Gartner Parking Work. Wells Funds XI and
II REIT JV and Wells OP hereby  reserve and retain the right and  privilege,  on
behalf of such Sellers,  their agents,  contractors  and employees,  of entering
upon the Gartner Property from and after the Closing as reasonably  necessary to
complete the  construction  and  installation  of the Gartner Parking Work. Such
Sellers  shall  maintain or shall cause the general  contractor  performing  the
Gartner Parking Work to maintain  commercially  reasonable insurance coverage at
all times during the  performance  of such work.  Such Sellers  shall and hereby
agree to  indemnify  and hold  Purchaser  harmless  from and against any and all
loss, liability, cost, damage


                                       65

Purchase and Sale Agreement





or expense that Purchaser may suffer or incur  (including,  without  limitation,
reasonable   attorneys'  fees  actually  incurred)  proximately  caused  by  the
performance of the Gartner Parking Work or by such Sellers'  failure to complete
the Gartner  Parking  Work in  accordance  with the  provisions  of this Section
4.3(s). In the event that such Sellers shall default in the performance of their
obligations  pursuant to this Section 4.3(s) and such default shall continue for
a period of five (5)  Business  Days after  written  notice  from  Purchaser  or
Gartner, Inc. to such Sellers (provided, however, that such Sellers shall not be
deemed in default  hereunder if such Sellers commence such remedy or cure within
five (5) Business Days after receipt of such notice,  and thereafter  diligently
pursues to remedy or cure such  default so long as such cure is  completed on or
before June 30,  2005),  then  Purchaser  may,  but shall not be  obligated,  to
complete the Gartner  Parking Work at such Sellers'  expense.  The provisions of
this  Section  4.3(s)  shall  survive  the  Closing for a period of one (1) year
following the date of substantial completion of said work.

                  (t)      ASML  Non-Disturbance  Agreement.  Wells OP agrees to
use good faith efforts to seek to obtain (at no cost or expense to Wells OP) the
execution and delivery by the Prime Ground Lessor of a non-disturbance agreement
in a form  reasonably  requested by Purchaser  and provided to Wells OP promptly
following  the  Effective  Date  hereof  by   Purchaser's   Counsel  (the  "ASML
Non-Disturbance  Agreement").  In no  event,  however,  shall the  inability  or
failure of Wells OP to obtain and  deliver  the ASML  Non-Disturbance  Agreement
(Wells OP having used its good faith efforts as set forth above) be a default of
Wells OP hereunder, and in no event shall the execution and delivery of the ASML
Non-Disturbance Agreement be a condition to Closing hereunder.

                  (u)      Nissan  Quitclaim  Deed.  Wells OP agrees to use good
faith  efforts to obtain (at no cost or expense to Wells OP) the  execution  and
delivery of the Nissan Quitclaim Deed. In no event, however, shall the inability
or failure of Wells OP to obtain and deliver the Nissan Quitclaim Deed (Wells OP
having used its good faith  efforts as set forth above) be a default of Wells OP
hereunder,  and in no event  shall the  execution  and  delivery  of the  Nissan
Quitclaim Deed be a condition to Closing hereunder.

         4.4.     Representations and Warranties of Purchaser.

                  (a)      Organization,  Authorization and Consents.  Purchaser
is a duly organized and validly existing  statutory real estate investment trust
under the laws of the State of  Maryland.  Purchaser  has the  right,  power and
authority  to  enter  into  this  Agreement  and to  purchase  the  Property  in
accordance  with the terms and  conditions of this  Agreement,  to engage in the
transactions contemplated in this Agreement and to perform and observe the terms
and provisions hereof.

                  (b)      Action  of  Purchaser,  Etc.  Purchaser has taken all
necessary  action to authorize the execution,  delivery and  performance of this
Agreement,  and upon the  execution and delivery of any document to be delivered
by Purchaser on or prior to the Closing,  this Agreement and such document shall
constitute  the  valid  and  binding  obligation  and  agreement  of  Purchaser,
enforceable   against  Purchaser  in  accordance  with  its  terms,   except  as
enforceability  may  be  limited  by  bankruptcy,  insolvency,   reorganization,
moratorium  or similar  laws of  general  application  affecting  the rights and
remedies of creditors.


                                       66

Purchase and Sale Agreement





                  (c)      No  Violations of Agreements.  Neither the execution,
delivery or performance of this Agreement by Purchaser,  nor compliance with the
terms and provisions hereof, will result in any breach of the terms,  conditions
or  provisions  of, or conflict  with or constitute a default under the terms of
any indenture,  deed to secure debt, mortgage,  deed of trust, note, evidence of
indebtedness or any other agreement or instrument by which Purchaser is bound.

                  (d)      Litigation.  To Purchaser's knowledge,  Purchaser has
received  no  written  notice  that any  action  or  proceeding  is  pending  or
threatened,  which  questions the validity of this Agreement or any action taken
or to be taken pursuant hereto.

         The  representations and warranties made in this Agreement by Purchaser
shall be  continuing  and shall be deemed  remade by Purchaser as of the Closing
Date, with the same force and effect as if made on, and as of, such date subject
to Purchaser's  right to update such  representations  and warranties by written
notice to Sellers and in  Purchaser's  certificate  to be delivered  pursuant to
Section 5.2(o) hereof.

         4.5      Covenants and  Agreements of Purchaser.  Sellers and Purchaser
hereby  mutually  acknowledge and agree that prior to the Effective Date of this
Agreement,  Sellers  and  Purchaser  engaged  in  extensive  negotiations,   and
Purchaser undertook due diligence investigations [including, without limitation,
an interview  with  representative(s)  of Matsushita (as defined  below)],  with
respect to the  potential  sale by Wells OP and the  purchase by  Purchaser,  in
addition  to the  Properties  that are the  subject of this  Agreement,  of that
certain  improved real property  located at 26200 Enterprise Way, in the City of
Lake  Forest,  Orange  County,  California,  which  is  leased  by  Wells  OP to
Matsushita Avionics Systems  Corporation  pursuant to that certain Office Lease,
dated  February 18,  1999,  between  Wells OP and  Matsushita  Avionics  Systems
Corporation,  as amended by amendments  dated July 30, 1999, April 30, 2001, and
September  18, 2002 (said  lease,  as so amended,  is herein  referred to as the
"Existing Matsushita Lease"). Matsushita Avionics Systems Corporation,  together
with  Matsushita  Electric  Corporation  of America,  and its or their direct or
indirect affiliates,  subsidiaries, parents or divisions, are herein referred to
collectively as "Matsushita";  and the real property which is the subject of the
Existing  Matsushita  Lease is herein referred to as the "Matsushita  Property".
Sellers and Purchaser  hereby further  acknowledge and agree that at the request
of Purchaser,  the Matsushita  Property is not included in the Properties  which
are the subject of this Agreement.  As a material inducement to the agreement of
Sellers to enter into this Agreement for the purchase and sale of the Properties
without the inclusion of the Matsushita Property,  Purchaser, for itself and the
Purchaser-Related  Entities,  hereby  covenants and agrees that, for a period of
five (5) years after the Effective Date of this Agreement, neither Purchaser nor
any  Purchaser-Related  Entity shall,  directly or indirectly,  lease,  offer or
agree to lease, sell or offer to sell to Matsushita, or accept an offer to lease
or purchase from  Matsushita,  with respect to any real property or any interest
in any real  property,  or in any space now or  hereafter  available in any real
property, which is located within Orange County, California, and which Purchaser
or any Purchaser-Related  Entity now or hereafter owns, manages or leases, or in
which Purchaser or any Purchaser-Related Entity now has or hereafter acquires an
ownership  interest (a  "Purchaser-Controlled  Competing  Property").  Purchaser
agrees  that in addition to any other  remedy that may be  available  at law, in
equity or under this Agreement, Sellers shall


                                       67

Purchase and Sale Agreement





be entitled to specific performance and injunctive relief,  without posting bond
or any other  security  to enforce or prevent  the  violation  of the  covenants
contained  in this  Section.  The  covenants  and  agreements  contained in this
Section  shall  be  presumed  to  be   enforceable,   and  any  reading  causing
unenforceability shall yield to a construction  permitting  enforcement.  In the
event a court should determine not to enforce the covenants  contained herein as
written due to overbreadth,  the parties  specifically  agree that said covenant
shall be enforced to the maximum extent reasonable, whether said revisions shall
be in time,  territory,  scope of prohibited  activities or other respects.  The
provisions of this Section 4.5 shall survive the Closing under this Agreement or
any earlier termination of this Agreement.

                                   ARTICLE 5.
                CLOSING DELIVERIES, CLOSING COSTS AND PRORATIONS

         5.1.     Sellers' Closing Deliveries.  For and in consideration of, and
as a condition  precedent  to  Purchaser's  delivery to Sellers of the  Purchase
Price,  Sellers  shall obtain or execute and deliver to Purchaser at Closing the
following  documents,  all of which  shall be duly  executed,  acknowledged  and
notarized where required:

                  (a)      Limited  Warranty  Deeds.  A limited  warranty  deed,
special  warranty deed,  grant deed or similar deed in the form customarily used
in the  jurisdiction  in which the  applicable  Property is located  pursuant to
which a grantor  warrants title only as to parties claiming by, through or under
the grantor  but not  otherwise,  from each Seller with  respect to the Wells OP
Land and associated Wells OP Improvements or applicable Wells Affiliate Land and
associated Wells Affiliate  Improvements  owned by such Seller (each, a "Limited
Warranty  Deed"),  subject only to the Permitted  Exceptions  applicable to such
Property,  and executed and acknowledged by such Seller.  The legal descriptions
of the  Wells OP Lands  and  Wells  Affiliate  Lands  set  forth in the  Limited
Warranty  Deeds  shall  be  based  upon  and  conform  to the  applicable  legal
descriptions  attached  hereto as EXHIBIT "A-1" and EXHIBIT "A-2". If and to the
extent that any of the Permitted  Exceptions  to which a particular  Property is
subject  requires the recitation or  incorporation in any deed of any provisions
of  such  Permitted  Exception,   the  Limited  Warranty  may  conform  to  such
requirements;

                  (b)      Quitclaim  Deed.  Upon  request,  each  Seller  shall
deliver a quitclaim deed in the form  customarily  used in the  jurisdiction  or
jurisdictions  in which the Property or Properties of such Seller are located to
convey the Property or Properties owned by such Seller by reference to the metes
and bounds legal  description of such Property as reflected on an updated Survey
of such Property obtained by Purchaser;

                  (c)      Assignment  and  Assumption of Lessee's  Interests in
Wells OP Ground Leases.  With respect to each of the Wells OP Ground Leases, the
following:

                           (i)      Assignment and Assumption of ASML Sub-Ground
                                    Lease. Two (2) counterparts of an assignment
                                    and  assumption of the lessee's  interest in
                                    the  ASML  Sub-Ground   Lease  in  the  form
                                    attached  hereto  as  SCHEDULE  1 and made a
                                    part hereof (the  "Assignment and Assumption
                                    of ASML Sub-Ground Lease");


                                       68

Purchase and Sale Agreement





                           (ii)     Assignment  and  Assumption  of Ingram Micro
                                    Bond  Lease.  Two  (2)  counterparts  of  an
                                    assignment  and  assumption  of the lessee's
                                    interest  in the Ingram  Micro Bond Lease in
                                    the form  attached  hereto as SCHEDULE 2 and
                                    made  a part  hereof  (the  "Assignment  and
                                    Assumption of Ingram Micro Bond Lease"); and

                           (iii)    Assignment and Assumption of ISS Bond Lease.
                                    Two (2)  counterparts  of an assignment  and
                                    assumption  of the lessee's  interest in the
                                    ISS Bond Lease in the form  attached  hereto
                                    as  SCHEDULE 3 and made a part  hereof  (the
                                    "Assignment   and  Assumption  of  ISS  Bond
                                    Lease");

                  (d)      Assignment  and  Assumption  of Leases  and  Security
Deposits.  Two (2) counterparts with respect to each Seller of an assignment and
assumption of the Leases and Security Deposits with respect to the Properties of
such  Seller  and,  to the extent  required  elsewhere  in this  Agreement,  the
obligations of such Seller under the Commission  Agreements  with respect to the
Properties  of such  Seller  in the form  attached  hereto  as  SCHEDULE  4 (the
"Assignment  and  Assumption  of  Leases"),  executed and  acknowledged  by such
Seller,

                  (e)      Assignment  and Assumption of ASML Sublease.  Two (2)
counterparts  of an assignment  and  assumption of the ASML Sublease in the form
attached  hereto  as  SCHEDULE  5  (the   "Assignment  and  Assumption  of  ASML
Sublease");

                  (f)      Assignment  and Assumption of Ingram Micro  Sublease.
Two (2)  counterparts  of an  assignment  and  assumption  of the  Ingram  Micro
Sublease  in the  form  attached  hereto  as  SCHEDULE  6 (the  "Assignment  and
Assumption of Ingram Micro Sublease");

                  (g)      Assignment  and Assumption of ISS Subleases.  Two (2)
counterparts  of an assignment  and  assumption of the ISS Subleases in the form
attached   hereto  as  SCHEDULE  7  (the   "Assignment  and  Assumption  of  ISS
Subleases");

                  (h)      Bill of Sale. A bill of sale from each Seller for the
Personal  Property of such Seller in the form attached hereto as SCHEDULE 8 (the
"Bill of Sale"),  without  warranty as to the title or condition of the Personal
Property of such Seller;

                  (i)      Assignment   and  Assumption  of  Ingram  Micro  Loan
Documents.  Two (2)  counterparts  of an assignment and assumption of the Ingram
Micro Loan Documents in the form attached hereto as SCHEDULE 9 (the  "Assignment
and Assumption of Ingram Micro Loan Documents");

                  (j)      Assignment of ISS Bonds. A transfer and assignment of
the ISS Bonds,  executed on behalf of Wells OP,  accompanied by the original ISS
Bonds, transferring the same to Purchaser;


                                       69

Purchase and Sale Agreement





                  (k)      Assignment and Assumption of ISS Bond Documents.  Two
(2)  counterparts  of an assignment  and assumption of the ISS Bond Documents in
the form attached  hereto as SCHEDULE 10 (the  "Assignment and Assumption of ISS
Bond Documents");

                  (l)      Assignment  and Assumption of Service Contracts.  Two
(2) counterparts  with respect to each Seller of an assignment and assumption of
Service  Contracts  with  respect to the  Properties  of such Seller in the form
attached  hereto as  SCHEDULE  11 (the  "Assignment  and  Assumption  of Service
Contracts"), executed, acknowledged and sealed by each such Seller;

                  (m)      General  Assignment.  An  assignment  with respect to
each  Seller of the  Intangible  Property  of such  Seller in the form  attached
hereto as SCHEDULE 12 (the "General  Assignment"),  executed and acknowledged by
each such Seller;

                  (n)      Seller's  Affidavit.  An owner's  affidavit from each
Seller  substantially  in the form  attached  hereto as SCHEDULE  13  ("Seller's
Affidavit"),  stating that there are no known boundary  disputes with respect to
the  Properties  of such Seller,  that there are no parties in possession of the
Properties  of such  Seller  other than such  Seller and the  tenants  under the
Leases of such Properties, and as to the Wells Affiliate Ground Lease Lands, the
tenants and other persons and entities  permitted by the Wells Affiliate  Ground
Leases, and, as to the Wells OP Ground Lease Land, the tenants and other persons
and entities  permitted by the Wells OP Ground Lease,  that any  improvements or
repairs  made by, or for the account of, or at the instance of such Seller to or
with respect to the Properties of such Seller within  ninety-five  (95) days (or
such longer  period as may be  required by the Title  Company to comply with the
lien laws of the  applicable  jurisdiction  in which such  Property is situated)
prior to the Closing have been paid for in full (or that adequate  provision has
been made therefor to the reasonable  satisfaction  of the Title  Company),  and
including  such  other  matters  as may be  reasonably  requested  by the  Title
Company;

                  (o)      Seller's  Certificate. A certificate from each Seller
in the form attached hereto as SCHEDULE 14 ("Seller's Certificate"),  evidencing
the  reaffirmation  of the truth and accuracy in all  material  respects of such
Seller's  representations  and warranties set forth in Section 4.1 hereof,  with
such  modifications  thereto  as may be  appropriate  in light of any  change in
circumstance since the Effective Date;

                  (p)      FIRPTA  Certificate.  A FIRPTA  Certificate from each
Seller in the form  attached  hereto as  SCHEDULE  15, or in such  other form as
applicable laws may require;

                  (q)      Ingram  Micro Bond  Certificate.  A bond  certificate
executed  by the  Industrial  Development  Board  of  the  City  of  Millington,
Tennessee in the form  attached  hereto as SCHEDULE 16 (the  "Ingram  Micro Bond
Certificate");

                  (r)      ISS   Home  Office  Payment   Agreement.   Three  (3)
counterparts of a home office payment agreement  executed by the ISS Trustee and
the ISS Issuer in the form attached  hereto as SCHEDULE 17 (the "ISS Home Office
Payment Agreement");


                                       70

Purchase and Sale Agreement





                  (s)      Assignment and Assumption of Agreements Regarding ISS
Letters of Credit.  Two (2)  counterparts  of an  assignment  and  assumption of
agreements  regarding letter of credit executed by Wells OP and Purchaser in the
form  attached  hereto  as  SCHEDULE  18  (the  "Assignment  and  Assumption  of
Agreements Regarding ISS Letters of Credit");

                  (t)      Assignment of Letters of Credit. Two (2) counterparts
of an assignment of letters of credit executed by the applicable  Sellers in the
form attached hereto as SCHEDULE 19 (the "Assignment of Letters of Credit");

                  (u)      Assignment   and   Assumption  of  Highwoods   Rental
Guaranty Agreements. Two (2) counterparts of an assignment and assumption of the
interests  and  obligations  of Wells OP under  the  Highwoods  Rental  Guaranty
Agreements  in the form  attached  hereto as  SCHEDULE 21 (the  "Assignment  and
Assumption of Highwoods Rental Guaranty Agreements");
                  (v)      Assignment   and  Assumption  of  Pacificare   Escrow
Agreement. Two (2) counterparts of an assignment and assumption of the interests
and  obligations of Wells OP under the Pacificare  Escrow  Agreement in the form
attached  hereto as SCHEDULE 22 (the  "Assignment  and  Assumption of Pacificare
Escrow Agreement");

                  (w)      Evidence  of  Authority.  Such  documentation  as may
reasonably  be required by  Purchaser's  title  insurer to  establish  that this
Agreement, the transactions  contemplated herein, and the execution and delivery
of the documents required hereunder, are duly authorized, executed and delivered
on behalf of the applicable Seller;

                  (x)      Settlement Statements. A settlement statement setting
forth the amounts  paid by or on behalf of and/or  credited to each of Purchaser
and each Seller pursuant to this Agreement;

                  (y)      Surveys  and Plans. Such surveys,  site plans,  plans
and  specifications,  and other  matters  relating to the Property as are in the
possession of Sellers to the extent not theretofore delivered to Purchaser;

                  (z)      Certificates of Occupancy. To the extent the same are
in the  possession  of  Sellers,  original or  photocopies  of  certificates  of
occupancy for all space within the improvements located on the Property;

                  (aa)     Leases.  To the extent the same are in the possession
or control of  Sellers,  original  executed  counterparts  of the Leases and the
Wells OP Ground Leases;

                  (bb)     Tenant Estoppel Certificates. All originally executed
Tenant Estoppel Certificates as may be in the possession of Sellers;

                  (cc)     Lease Guarantor Estoppel Certificates. All originally
executed Lease  Guarantor  Estoppel  Certificates as may be in the possession of
Sellers;


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                  (dd)     Highwoods   Estoppel   Certificate.   All  originally
executed Highwoods Estoppel Certificates as may be in the possession of Sellers;

                  (ee)     SNDAs. All originally executed SNDAs as may be in the
possession of Sellers;

                  (ff)     Ground Lessor Estoppel  Certificates.  All originally
executed  Ground Lessor  Estoppel  Certificates  as may be in the  possession of
Wells OP;

                  (gg)     Association  Estoppel  Certificates.  All  originally
executed  Association  Estoppel  Certificates  as may be in  the  possession  of
Sellers;

                  (hh)     Declarant  Estoppel   Certificates.   All  originally
executed Declarant Estoppel Certificates as may be in the possession of Sellers;

                  (ii)     Other  Third   Party   Estoppel   Certificates.   All
originally  executed  Other Third Party Estoppel  Certificates  as may be in the
possession of Sellers;

                  (jj)     Notices of Sale to Tenants.  Each Seller,  as to each
Property  owned by such Seller,  will join with Purchaser in executing a notice,
in form and content  reasonably  satisfactory  to such Seller and Purchaser (the
"Tenant  Notices of Sale"),  which Purchaser shall send to each tenant under the
Leases affecting the Properties of such Seller informing such tenant of the sale
of such  Properties and of the assignment to and assumption by Purchaser of such
Seller's  interest  in the  Leases  and the  Security  Deposits  affecting  such
Properties  and directing that all rent and other sums payable for periods after
the Closing under such Lease shall be paid as set forth in said notices;

                  (kk)     Notices of Sale to Ground Lessors. Wells OP will join
with  Purchaser  in  executing  a  notice,   in  form  and  content   reasonably
satisfactory  to Wells OP and Purchaser  (the "Ground  Lessor Notices of Sale"),
which Purchaser shall send to the ASML Prime Ground Lessor,  the ASML Sub-Ground
Lessor,  the Ingram Micro Ground Lessor and the ISS Ground Lessor informing such
ground lessor of the sale of the ASML  Property,  the Ingram Micro  Property and
the ISS Property and of the  assignment  to and  assumption  by Purchaser of the
interest  of Wells OP under the ASML  Sub-Ground  Lease,  the Ingram  Micro Bond
Lease and the ISS Bond Lease  affecting  such  Properties and directing that all
notices to the lessee under such leases after the Closing be sent to Purchaser;

                  (ll)     Notices of Sale to Service  Contractors  and  Leasing
Agents.  Each  Seller,  as to the  Properties  of such  Seller,  will  join with
Purchaser in executing notices,  in form and content reasonably  satisfactory to
such Seller and Purchaser (the "Other Notices of Sale"),  which  Purchaser shall
send to each service provider and leasing agent under the Service  Contracts and
Commission  Agreements  (as the case may be)  affecting  the  Properties of such
Seller  assumed by  Purchaser  at Closing  informing  such  service  provider or
leasing  agent  (as the case may be) of the sale of such  Properties  and of the
assignment to and assumption by Purchaser of such Seller's obligations under the
Service  Contracts and  Commission  Agreements  affecting the Properties of such
Seller arising after the Closing Date and directing that all future


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statements  or  invoices  for  services  under  such  Service  Contracts  and/or
Commission  Agreements for periods after the Closing be directed to Purchaser as
set forth in said notices;

                  (mm)     Notices  of Sale  to  Associations.  Each  applicable
Seller,  as to the  Properties  of such  Seller,  will  join with  Purchaser  in
executing a notice, in form and content  reasonably  satisfactory to such Seller
and Purchaser (the "Association Notices of Sale"), which Purchaser shall send to
the  Associations  informing the  Associations  of the sale of the Properties of
such Seller and directing that all requests for payments due to such Association
for periods  after the Closing be  directed  to  Purchaser  as set forth in said
notice and providing a notice address for Purchaser;

                  (nn)     Notices  of Sale to  Declarants  under  Declarations.
Each  applicable  Seller,  as to the  Properties of such Seller,  will join with
Purchaser in executing a notice, in form and content reasonably  satisfactory to
such Seller and Purchaser (the  "Declarant  Notices of Sale"),  which  Purchaser
shall send to the Declarants under the Declarations  informing the Declarants of
the sale of the  Properties of such Seller and  directing  that all requests for
payments  under the  Declarations  for periods  after the Closing be directed to
Purchaser  as set  forth in said  notice  and  providing  a notice  address  for
Purchaser under the Declarations;

                  (oo)     Assignment   of  Interest   in  Alstom   Power  Lease
Amendments.  An  assignment  executed  by Wells OP (as the sole  member of Wells
Virginia  REIT)  transferring  and  assigning to Wells  Virginia REIT all right,
title and interest of Wells OP in and to that certain  Third  Amendment to Lease
Agreement,  dated May 4, 2002,  between  Wells OP and Alstom  Power  Inc.,  that
certain Fourth Amendment to Lease Agreement,  dated May 31, 2002,  between Wells
OP and Alstom Power Inc., and that certain Fifth  Amendment to Lease  Agreement,
dated July 29, 2004, between Wells OP and Alstom Power Inc.;

                  (pp)     Gartner Lease  Amendment.  An original fully executed
counterpart  of the  Gartner  Lease  Amendment,  to the  extent  the  same is in
Sellers' possession;

                  (qq)     ISS  Lease  Amendment.  An  original  fully  executed
counterpart  of the ISS Lease  Amendment,  to the extent the same is in Sellers'
possession;

                  (rr)     ASML Non-Disturbance  Agreement.  An originally fully
executed  counterpart of the ASML Non-Disturbance  Agreement,  to the extent the
same is in Seller's possession;

                  (ss)     Replacement   Ingram  Micro  Industrial   Development
Revenue Note. A replacement original of the Ingram Micro Industrial  Development
Revenue Note, as endorsed or assigned to Purchaser, to the extent the same is in
Seller's  possession;  or in the absence of such original  replacement  note, an
affidavit  executed  on behalf of Wells OP that such note has been lost and that
Wells OP has not assigned such note to any other person;

                  (tt)     Replacement ISS Bonds.  Replacement  originals of the
ISS  Bonds,  issued  in the name of  Purchaser,  to the  extent  the same are in
Seller's possession;


                                       73

Purchase and Sale Agreement





                  (uu)     Assignment  of Opus  Indemnity.  An assignment of all
rights of Wells OP with respect to the Opus Indemnity;

                  (vv)     Assignment of Allstate Purchase Option. An assignment
by Wells OP to  Purchaser  of all rights of Wells OP under and  pursuant  to the
Allstate Purchase Option;

                  (ww)     Nissan  Quitclaim Deed. The Nissan Quitclaim Deed, to
the extent the same is in the possession of Wells OP;

                  (xx)     Keys and Records. All of the keys to any door or lock
on the Properties and the original tenant files and other non-confidential books
and records (excluding any appraisals,  budgets, third party reports obtained by
Sellers prior to the  acquisition of the respective  Properties by such Sellers,
strategic plans for the Properties, internal analyses, information regarding the
marketing of the Properties for sale, submissions relating to Sellers' obtaining
of   corporate   authorization,    attorney   and   accountant   work   product,
attorney-client  privileged documents, or other information in the possession or
control of Sellers which Sellers or either of them deem proprietary) relating to
the Property in the possession of Sellers;

                  (yy)     Property Manager Lien Waivers.  Executed lien waivers
from the managers  under the  Management  Agreements in those  jurisdictions  in
which property  managers may have statutory lien rights, to the extent such lien
waivers may be in Sellers' possession (Sellers hereby agreeing to use good faith
efforts to obtain the same);

                  (zz)     Original  Letters of Credit.  All original Letters of
Credit in the possession of Sellers,  together with  transfers  executed by each
applicable Seller,  directing the respective issuers of the Letters of Credit to
transfer the Letters of Credit to Purchaser as beneficiary thereunder; and

                  (aaa)    Other  Documents.  Such other  documents  as shall be
reasonably requested by Purchaser's title insurer to effectuate the purposes and
intent of this Agreement.

         5.2.     Purchaser's  Closing  Deliveries.  Purchaser  shall  obtain or
execute and deliver to Sellers at Closing the following documents,  all of which
shall be duly executed, acknowledged and notarized where required:

                  (a)      Assignment   and   Assumption  of  Leases.   Two  (2)
counterparts  of the  Assignment  and  Assumption of Leases with respect to each
Seller, executed and acknowledged by Purchaser;

                  (b)      Assignment and Assumption of ASML  Sub-Ground  Lease.
Two (2) counterparts of the Assignment and Assumption of ASML Sub-Ground  Lease,
executed and acknowledged by Purchaser;

                  (c)      Assignment and Assumption of Ingram Micro Bond Lease.
Two (2)  counterparts  of the  Assignment  and  Assumption  of Ingram Micro Bond
Lease, executed and acknowledged by Purchaser;


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                  (d)      Assignment and Assumption of ISS Bond Lease.  Two (2)
counterparts  of the Assignment  and Assumption of ISS Bond Lease,  executed and
acknowledged by Purchaser;

                  (e)      Assignment   and  Assumption  of  Ingram  Micro  Loan
Documents. Two (2) counterparts of the Assignment and Assumption of Ingram Micro
Loan Documents, executed and acknowledged by Purchaser;

                  (f)      Assignment and Assumption of ISS Bond Documents.  Two
(2)  counterparts  of the  Assignment  and  Assumption  of ISS  Bond  Documents,
executed and acknowledged by Purchaser;

                  (g)      Assignment and  Assumption of ASML Sublease.  Two (2)
counterparts  of the Assignment  and  Assumption of ASML Sublease,  executed and
acknowledged by Purchaser;

                  (h)      Assignment and  Assumption of Ingram Micro  Sublease.
Two (2)  counterparts of the Assignment and Assumption of Ingram Micro Sublease,
executed and acknowledged by Purchaser;

                  (i)      Assignment and  Assumption of ISS Subleases.  Two (2)
counterparts  of the Assignment  and  Assumption of ISS Subleases,  executed and
acknowledged by Purchaser;

                  (j)      Assignment and Assumption of Service  Contracts.  Two
(2)  counterparts  of the Assignment  and  Assumption of Service  Contracts with
respect to each Seller, executed and acknowledged by Purchaser;

                  (k)      General  Assignment.  Two  (2)  counterparts  of  the
General  Assignment  with respect to each Seller,  executed and  acknowledged by
Purchaser;

                  (l)      ISS   Home   Office   Payment   Agreement.   Two  (2)
counterparts of the ISS Home Office Payment Agreement, executed and acknowledged
by Purchaser;

                  (m)      Assignment and Assumption of Agreements Regarding ISS
Letters of Credit.  Two (2)  counterparts  of the  Assignment  and Assumption of
Agreements  Regarding  ISS  Letters  of Credit,  executed  and  acknowledged  by
Purchaser;

                  (n)      Assignment of Letters of Credit. Two (2) counterparts
of the Assignment of Letters of Credit, executed by Purchaser;

                  (o)      Assignment   and   Assumption  of  Highwoods   Rental
Guaranty  Agreements.  Two (2)  counterparts of the Assignment and Assumption of
Highwoods Rental Guaranty Agreements.

                  (p)      Purchaser's  Certificate.  A certificate  in the form
attached  hereto as  SCHEDULE 22  ("Purchaser's  Certificate"),  evidencing  the
reaffirmation of the truth and accuracy in all material  respects of Purchaser's
representations  and  warranties  contained  in


                                       75

Purchase and Sale Agreement





Section 4.4 hereof,  with such  modifications  thereto as may be  appropriate in
light of any change in circumstances since the Effective Date;

                  (q)      Notice of Sale to  Tenants.  The  Tenant  Notices  of
Sale, executed by Purchaser, as contemplated in Section 5.1(cc) hereof;

                  (r)      Notices of Sale to Ground Lessors.  The Ground Lessor
Notices of Sale,  executed by  Purchaser,  as  contemplated  in Section  5.1(dd)
hereof;

                  (s)      Notices of Sale to Service  Contractors  and  Leasing
Agents.  The Other Notices of Sale to service  providers and leasing agents,  as
contemplated in Section 5.1(ee) hereof;

                  (t)      Notices  of Sale  to  Associations.  The  Association
Notices of Sale,  executed by  Purchaser,  as  contemplated  in Section  5.1(ff)
hereof;

                  (u)      Notices of Sale to Declarants.  The Declarant Notices
of Sale, executed by Purchaser, as contemplated in Section 5.1(gg) hereof;

                  (v)      SNDAs.  Such  SNDAs as may  have  been  executed  and
delivered by any Major Tenants;

                  (w)      Assignment  and   Assumption  of  Pacificare   Escrow
Agreement.  Two (2)  counterparts of the Assignment and Assumption of Pacificare
Escrow Agreement;

                  (x)      Settlement  Statement A settlement  statement setting
forth the amounts  paid by or on behalf of and/or  credited to each of Purchaser
and Sellers pursuant to this Agreement;

                  (y)      Evidence of Authority.  A copy of  resolutions of the
Board of  Directors  of  Purchaser,  certified  by the  Secretary  or  Assistant
Secretary of Purchaser to be in force and  unmodified as of the date and time of
Closing,  authorizing  the  purchase  contemplated  herein,  the  execution  and
delivery of the documents required hereunder,  and designating the signatures of
the  persons who are to execute  and  deliver  all such  documents  on behalf of
Purchaser or if Purchaser is not a corporation, such documentation as Seller may
reasonably   require  to  establish  that  this   Agreement,   the   transaction
contemplated  herein,  and the execution and delivery of the documents  required
hereunder, are duly authorized, executed and delivered; and

                  (z)      Other  Documents.  Such other  documents  as shall be
reasonably  requested by Sellers'  counsel to effectuate the purposes and intent
of this Agreement.

         5.3.     Closing  Costs.  Sellers  shall  pay  the  attorneys'  fees of
Sellers,  any escrow  closing  fees  charged by the Title  Company,  the cost of
recording the Limited  Warranty  Deeds,  the Capital One Lake Easement Deed, the
Kerr  McGee  Sewer  Easement  and the  satisfactions  of the Loans to be paid by
Sellers  at  Closing,  the cost of title  examination  fees and title  insurance
premiums for the "standard" or "base" coverage under all owner's title insurance
policies issued


                                       76

Purchase and Sale Agreement





by the Title  Company to Purchaser  with respect to the  Properties,  but not in
excess of the sum of  $738,804.61  in the  aggregate  (as  reduced  by the title
insurance  premium  for  "standard"  or  "base"  coverage  as  to  any  Excluded
Property),  the Transfer  Fees with respect to the Letters of Credit,  the costs
(if any) to  transfer  the  certificates  of  occupancy  for the  Properties  to
Purchaser,  and all other costs and expenses  incurred by Sellers in closing and
consummating the purchase and sale of the Properties pursuant hereto.  Purchaser
shall pay the cost of all title insurance  premiums for "extended"  coverage and
all endorsements as to all owner's title insurance  policies issued by the Title
Company  to  Purchaser  with  respect  to the  Properties,  all title  insurance
premiums payable with respect to all mortgagee title insurance policies that may
be  issued  by the  Title  Company  to any  lender(s)  of  Purchaser,  all other
recording  fees on all  instruments  to be  recorded  in  connection  with these
transactions, the attorneys' fees of Purchaser, and all other costs and expenses
incurred by Purchaser in the performance of Purchaser's due diligence inspection
of the Properties and in closing and  consummating  the purchase and sale of the
Properties pursuant hereto. Purchaser and the Seller of each applicable Property
shall each pay fifty  percent  (50%) of the Surveys and fifty  percent  (50%) of
Real Estate Transfer Taxes (if any) imposed by the applicable jurisdiction(s) in
which each such  Property is located upon the  conveyance  of each such Property
pursuant hereto;  provided,  however,  that Purchaser's  share of said aggregate
Real Estate Transfer Taxes shall not exceed $850,000.00.

         5.4.     Prorations  and Credits.  The following  items in this Section
5.4 shall be adjusted and prorated between each Seller and Purchaser as of 11:59
P.M. on the day preceding  the Closing,  based upon the actual number of days in
the applicable month or year:

                  (a)      Taxes.  All general real estate taxes  imposed by any
governmental  authority  ("Taxes") shall be prorated between  Purchaser and each
Seller as to the Taxes with respect to the  Properties  of such Seller as of the
Closing.  If the Closing  occurs prior to the receipt by Sellers of the tax bill
for any of the Properties  for the calendar year or other  applicable tax period
in which the Closing  occurs,  Taxes with respect to such Property or Properties
shall be prorated for such  calendar year or other  applicable  tax period based
upon the prior year's tax bill.  Notwithstanding the foregoing,  Taxes shall not
be  prorated  with  respect to any  Property  as to which the  tenant  under the
Lease(s) with respect to such Property is obligated to pay Taxes directly to the
applicable taxing authority.

                  (b)      Reproration  of Taxes.  After  receipt of final Taxes
and  other  bills,  Purchaser  shall  prepare  and  present  to  each  Seller  a
calculation of the reproration of such Taxes and other items with respect to the
Properties of such Seller, based upon the actual amount of such items charged to
or  received  by the parties  for the year or other  applicable  fiscal  period.
Purchaser and each Seller shall make the appropriate  adjusting  payment between
them within  thirty (30) days after  presentment  to such Seller of  Purchaser's
calculation and appropriate  back-up  information.  Purchaser shall provide each
Seller with appropriate  backup materials  related to the calculation,  and each
Seller may inspect  Purchaser's  books and records  related to the Properties of
such Seller to confirm the  calculation.  The  provisions of this Section 5.4(b)
shall survive the Closing for a period of one (1) year after the Closing Date.

                  (c)      Rents, Income and Other Expenses.  As to each Seller,
rents and any other amounts  (including Taxes) paid by tenants of the Properties
of such Seller shall be prorated as of


                                       77

Purchase and Sale Agreement





the Closing Date and be adjusted  against the Purchase  Price  allocated to such
Seller on the basis of a schedule  which  shall be  prepared  by such Seller and
delivered to  Purchaser  for  Purchaser's  review and approval at least five (5)
Business  Days prior to Closing.  With respect to each Seller,  Purchaser  shall
receive  at  Closing  a credit  for  Purchaser's  pro rata  share of the  rents,
additional rent,  common area maintenance  charges,  tenant  reimbursements  and
escalations,  and all other  payments paid for the month of Closing with respect
to the  Properties of such Seller and for all other rents and other amounts with
respect to the  Properties  of such Seller that apply to periods  from and after
the Closing,  but which are received by such Seller prior to Closing.  Purchaser
agrees to pay to each  Seller,  upon  receipt,  any rents or other  payments  by
tenants  under their  respective  Leases with respect to the  Properties of such
Seller  that apply to periods  prior to Closing but are  received  by  Purchaser
after Closing; provided, however, that any delinquent rents or other payments by
tenants shall be applied first to any current amounts owing by such tenants from
and after Closing, then to delinquent rents in the order in which such rents are
most recently  past due,  with the balance,  if any, paid over to such Seller to
the extent of delinquencies existing at the time of Closing to which such Seller
is entitled;  it being understood and agreed that Purchaser shall not be legally
responsible  to such  Seller for the  collection  of any rents or other  charges
payable with respect to such Leases or any portion thereof, which are delinquent
or past due as of the Closing Date; but Purchaser  agrees that  Purchaser  shall
send monthly notices for a period of three (3)  consecutive  months in an effort
to collect any rents and  charges not  collected  as of the Closing  Date.  With
respect to each Seller, any reimbursements payable by any tenant under the terms
of any tenant lease  affecting  any of the  Properties  of such Seller as of the
Closing Date,  which  reimbursements  pertain to such tenant's pro rata share of
increased  operating  expenses or common area  maintenance  costs  incurred with
respect to such  Properties at any time prior to the Closing,  shall be prorated
upon Purchaser's actual receipt of any such reimbursements,  on the basis of the
number of days of such  Seller's and  Purchaser's  respective  ownership of such
Properties  during  the  period in  respect  of which  such  reimbursements  are
payable;  and  Purchaser  agrees to pay to such  Seller such  Seller's  pro rata
portion of such reimbursements within thirty (30) days after Purchaser's receipt
thereof. Conversely, if any tenant under any such Lease affecting the Properties
of such Seller  shall become  entitled at any time after  Closing to a refund of
tenant reimbursements  actually paid by such tenant prior to Closing, then, such
Seller shall, within thirty (30) days following Purchaser's demand therefor, pay
to  Purchaser  an  amount  equal  to  such  Seller's  pro  rata  share  of  such
reimbursement  refund  obligations,  said proration to be calculated on the same
basis as  hereinabove  set forth.  The  applicable  Sellers  shall be and remain
responsible  for the  payment  of all  Florida  sales tax that may be payable on
rents and rental  income paid by the tenants  under their leases  affecting  the
Americredit  Property  and the  Gartner  Property,  respectively,  prior  to the
Closing Date (and to the extent that the tenants  under such Leases are required
to reimburse  the landlord for all or any part of such Florida  sales tax,  such
tenant  reimbursement  paid with  respect to the rents  payable  for all periods
prior to the Closing Date shall belong to the applicable  Sellers).  Conversely,
Purchaser shall be responsible for the payment of all Florida sales tax that may
be payable on rents and rental  income paid by such  tenants  under their Leases
for all  periods  from and after the  Closing  Date (and to the extent  that the
tenants  under such Leases are required to reimburse the landlord for all or any
part of such Florida sales tax, such tenant reimbursements with respect to rents
paid by such  tenants  for all  periods  from and after the  Closing  Date shall
belong to Purchaser).  Each Seller hereby retains its right to pursue any tenant
under the  Leases  affecting  the  Properties  of such  Seller for sums due such
Seller for periods  attributable to such Seller's  ownership of such Properties;
provided, however, that such Seller (i) shall be required to


                                       78

Purchase and Sale Agreement





notify  Purchaser  in writing of its  intention to commence or pursue such legal
proceedings,  and to provide  Purchaser with copies of all  correspondence  with
such  tenant  relative  to such  proceedings;  (ii) shall only be  permitted  to
commence  or pursue  any  legal  proceedings  after the date  which is three (3)
months after  Closing,  except that such Seller shall be entitled to continue to
pursue any legal proceedings  commenced prior to Closing; and (iii) shall not be
permitted to commence or pursue any legal proceedings against any tenant seeking
eviction  of  such  tenant  or the  termination  of the  applicable  Lease.  The
provisions  of this  Section  5.4(c)  shall  survive the Closing for a period of
eighteen  (18) months after the Closing  Date;  provided,  however,  that in the
event the tenant under any Lease affecting any Property  currently has rights to
audit  operating  expenses  under its Lease for calendar  year 2005 which extend
beyond eighteen (18) months after the Closing Date of such Property,  then as to
any such Property and Lease, the provisions of this Section 5.4(c) shall survive
the Closing for a period of time equal to any such  tenant's  audit rights under
such Lease.

                  (d)      Security Deposits. As to each Seller, Purchaser shall
receive at Closing a credit with respect to the Purchase Price allocated to such
Seller for all  Security  Deposits  transferred  and  assigned to  Purchaser  at
Closing in connection  with the Leases  affecting the Properties of such Seller,
together with a detailed inventory of such Security Deposits.

                  (e)      Operating  Expenses.  As  to  each  Seller,  personal
property taxes, installment payments of special assessment liens, vault charges,
sewer  charges,  utility  charges,  and  normally  prorated  operating  expenses
actually  paid or payable as of the Closing Date with respect to the  Properties
of such Seller (including,  without limitation,  amounts payable pursuant to the
Service  Contracts and Property  Management  Agreements) shall be prorated as of
the Closing  Date and  adjusted  against the  Purchase  Price  allocated to such
Seller,  provided that within ninety (90) days after the Closing,  Purchaser and
such Seller will make a further adjustment for such taxes,  charges and expenses
affecting the  Properties of such Seller which may have accrued or been incurred
prior to the Closing Date,  but not collected or paid at that date. In addition,
as to each Seller, within ninety (90) days after the close of the fiscal year(s)
used in calculating  the  pass-through  to tenants of operating  expenses and/or
common area maintenance  costs under the Leases affecting the Properties of such
Seller (where such fiscal year(s)  include(s) the Closing Date), such Seller and
Purchaser shall, upon the request of either,  re-prorate on a fair and equitable
basis in order to adjust for the effect of any  credits  or  payments  due to or
from tenants for periods prior to the Closing Date. All prorations shall be made
based on the number of calendar days in such year or month,  as the case may be.
Notwithstanding the foregoing,  personal property taxes, installment payments of
special assessment liens,  vault charges,  sewer charges,  utility charges,  and
operating  expenses  shall not be prorated  with  respect to any  Property as to
which the tenant under the Lease(s)  with respect to such  Property is obligated
to pay the same directly to the provider thereof. The provisions of this Section
5.4(e) shall  survive the Closing for a period of eighteen (18) months after the
Closing Date;  provided,  however,  that in the event the tenant under any Lease
affecting any Property  currently has rights to audit  operating  expenses under
its Lease for calendar year 2005 which extend beyond  eighteen (18) months after
the Closing Date of such Property,  then as to any such Property and Lease,  the
provisions of this Section 5.4(e) shall survive the Closing for a period of time
equal to any such tenant's audit rights under such Lease.

                  (f)      Tenant Inducement Costs.


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                           (i)      At  the   Closing   of  the  ISS   Property,
Purchaser  shall receive a credit against the Purchase Price of such Property in
the amount of $888,076.88,  said sum representing the unpaid tenant  improvement
allowance  payable to the tenant  under and pursuant to the Lease for Building 3
of the ISS Property.  At such Closing,  Purchaser shall assume the obligation to
pay  such  tenant  improvement  allowance  to such  tenant  as and when the same
becomes payable pursuant to the terms of said Lease.

                           (ii)     At the  Closing of the John Wiley  Property,
Purchaser  shall receive credits against the Purchase Price of such Property (x)
in the amount of $69,492.00, said sum representing the unpaid tenant improvement
allowance  payable to John Wiley & Sons, Inc. under and pursuant to its Lease at
the John Wiley Property as set forth on the attached Exhibit "I", and (y) in the
amount of  $48,239.00,  said sum  representing  the  unpaid  leasing  commission
payable to CB Richard Ellis, Inc. in connection with the Lease with John Wiley &
Sons,  Inc.  pursuant to the  Commission  Agreement  described  on the  attached
Exhibit "C". At such Closing, Purchaser shall assume the obligations to pay such
tenant  improvement  allowance  and such leasing  commission  to said tenant and
leasing agent as and when the same become payable  pursuant to the terms of said
Lease and Commission Agreement.

                                   ARTICLE 6.
                              CONDITIONS TO CLOSING

         6.1.     Conditions  Precedent to Purchaser's  Obligations.  Subject to
the last paragraph of this Section 6.1, the  obligations of Purchaser  hereunder
to consummate the  transaction  contemplated  hereunder shall in all respects be
conditioned upon the  satisfaction of each of the following  conditions prior to
or simultaneously  with the Closing,  any of which may be waived by Purchaser in
its sole  discretion  by written  notice to  Sellers at or prior to the  Closing
Date:

                  (a)      Covenants.  Sellers  shall  have  performed,  in  all
material  respects,  all  covenants,  agreements  and  undertakings  of  Sellers
contained in this Agreement;

                  (b)      Representations  and Warranties.  All representations
and warranties of each Seller as set forth in this  Agreement  shall be true and
correct in all  material  respects  as of the date of this  Agreement  and as of
Closing,  provided that solely for purposes of this subparagraph such warranties
and  representations  shall be deemed to be given  without being limited to such
Seller's knowledge and without modification (by update or otherwise, as provided
in Section 5.1 hereof);

                  (c)      Tenant   Estoppel   Certificates.   Tenant   Estoppel
Certificates  from each of the  Major  Tenants  shall  have  been  delivered  to
Purchaser,  with each such estoppel  certificate (i) to be  substantially in the
form attached  hereto as EXHIBIT "M" (or if the applicable  Lease provides for a
particular  form of estoppel  certificate to be given by the tenant  thereunder,
the Tenant Estoppel Certificate with respect to such Lease may be in the form as
called for therein), (ii) to be dated within thirty (30) days prior to the First
Closing Date,  (iii) to confirm the material  terms of the  applicable  Lease as
contained in the copies of the Leases  obtained by or  delivered  to  Purchaser,
(iv) to confirm the absence of any material  defaults under the applicable Lease
as of the date thereof; and (v) the Tenant Estoppel  Certificates for the Alstom
Property, the AT&T


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(PA)  Property  and  the  Capital  One  Property  must  confirm  the  applicable
information identified on EXHIBIT "V" as "critical";  provided; however, that if
the closing of the  purchase  and sale of any Property is adjourned or postponed
beyond the First Closing Date set forth in Section 2.7(a) hereof, for any reason
permitted  under this  Agreement  or as  otherwise  may be agreed by Sellers and
Purchaser,  and Sellers  theretofore  shall have obtained and delivered a Tenant
Estoppel  Certificate  meeting the requirements of this Section 6.1(c) and dated
within  thirty (30) days of First  Closing Date,  then this  condition  shall be
deemed  satisfied as to such  Property and Sellers  shall have no  obligation to
seek or obtain an updated  Tenant  Estoppel  Certificate  as to such Property to
comply with  clause  (ii)  hereinabove.  Subject to the last  paragraph  of this
Section 6.1, the delivery of said Tenant  Estoppel  Certificates  from the Major
Tenants shall be a condition of Closing, and the failure or inability of Sellers
to obtain and  deliver  any of said Tenant  Estoppel  Certificates,  each Seller
having  used its good faith  efforts to obtain the same from the  tenants  under
Leases of the  Properties  of such  Seller,  shall not  constitute  a default by
Sellers under this Agreement;

                  (d)      Lease   Guarantor   Estoppel   Certificates.    Lease
Guarantor  Estoppel  Certificates  from each of the Lease  Guarantors  under the
Lease Guaranties shall have been delivered to Purchaser, with each such estoppel
certificate (i) to be  substantially  in the form attached hereto as EXHIBIT "T"
and (ii) to be dated within  thirty (30) days prior to the First  Closing  Date;
provided,  however, that if the closing of the purchase and sale of any Property
is  adjourned or  postponed  beyond the First  Closing Date set forth in Section
2.7(a) hereof for any reason  permitted under this Agreement or as otherwise may
be agreed by Sellers and Purchaser,  and Sellers theretofore shall have obtained
and delivered a Lease Guarantor Estoppel Certificate meeting the requirements of
this Section 6.1(d) and dated within thirty (30) days of the First Closing Date,
then this  condition  shall be deemed  satisfied as to such Property and Sellers
shall have no obligation to seek or obtain an updated Lease  Guarantor  Estoppel
Certificate as to such Property to comply with clause (ii) hereinabove.  Subject
to the last paragraph of this Section 6.1, the delivery of said Lease  Guarantor
Estoppel Certificates from the Lease Guarantors shall be a condition of Closing,
and the failure or  inability of Sellers to obtain and deliver any of said Lease
Guarantor Estoppel Certificates,  each Seller having used its good faith efforts
to  obtain  the same  from the  Lease  Guarantors  of any  Lease  affecting  the
Properties of such Seller,  shall not constitute a default by Sellers under this
Agreement;

                  (e)      Highwood   Estoppel   Certificates.   The   Highwoods
Estoppel  Certificates in substantially the form attached hereto as EXHIBIT "Y",
executed by Highwoods  Properties,  Inc.  Subject to the last  paragraph of this
Section 6.1, the delivery of said  Highwoods  Estoppel  Certificates  shall be a
condition of Closing,  and the failure or inability of the applicable  Seller to
obtain and  deliver any of said  Highwoods  Estoppel  Certificates,  such Seller
having used its good faith  efforts to obtain the same,  shall not  constitute a
default by Sellers under this Agreement

                  (f)      Ground Lessor  Estoppel  Certificates.  Ground Lessor
Estoppel  Certificates  from each of the  ground  lessors  under the ASML  Prime
Ground Lease,  the ASML Sub-Ground  Lease and the Ingram Micro Bond Lease,  with
each such estoppel  certificate  (i) to be  substantially  in the forms attached
hereto as EXHIBIT "H-1",  EXHIBIT "H-2" and EXHIBIT "H-3",  respectively  (or if
the  applicable  Ground  Lease  provides  for  a  particular  form  of  estoppel
certificate  to be given by the lessor  thereunder,  the Ground Lessor  Estoppel
Certificate with


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respect to such ground lease may be in the form as called for therein),  (ii) to
be dated  within  thirty  (30) days prior to the First  Closing  Date,  (iii) to
confirm the material terms of the applicable  ground lease,  as contained in the
copies of the Ground Leases  obtained by or delivered to Purchaser,  and (iv) to
confirm the absence of any material  defaults under the applicable Ground Leases
as of the date of such  estoppel  certificate;  provided,  however,  that if the
closing of the  purchase  and sale of the  property is  adjourned  or  postponed
beyond the First Closing Date set forth in Section  2.7(a) hereof for any reason
permitted  under this  Agreement  or as  otherwise  may be agreed by Sellers and
Purchaser,  and Sellers  theretofore  shall have obtained and delivered a Ground
Lessor Estoppel  Certificate meeting the requirements of this Section 6.1(f) and
dated within  thirty (30) days of the First Closing  Date,  then this  condition
shall  be  deemed  satisfied  as to such  Property  and  Sellers  shall  have no
obligation to seek or obtain an updated Ground Lessor Estoppel Certificate as to
such  Property  to comply  with  clause  (ii)  hereinabove.  Subject to the last
paragraph  of  this  Section  6.1,  the  delivery  of  Ground  Lessor   Estoppel
Certificates  from the ASML Prime Ground Lessor,  the ASML Sub-Ground Lessor and
the Ingram Micro Ground Lessor shall be a condition of Closing,  and the failure
or  inability  of Wells OP to obtain and  deliver  said Ground  Lessor  Estoppel
Certificates,  Wells OP having  used its good  faith  efforts to obtain the same
from the ground lessors under the Ground Leases,  shall not constitute a default
by Wells OP under this Agreement;

                  (g)      Association  Estoppel  Certificates.  An  Association
Estoppel  Certificate  from  each of the  Associations  listed  on the  attached
EXHIBIT "D" shall have been delivered to Purchaser,  with each such  Association
Estoppel  Certificate (i) to be dated within thirty (30) days prior to the First
Closing  Date,  and (ii) to confirm (A) the absence of any material  defaults or
violations  by  the  applicable  Seller  with  respect  to  the  payment  of any
assessments  (whether  annual,  periodic or special)  to such  Association  with
respect  to the  applicable  Property  or  Properties  owned by such  Seller  as
"owner",  (B) the amount of any  annual,  periodic  or regular  assessments  and
specific  assessments to become payable by the owner of the applicable  Property
and as to which such  Association  has given written notice to such Seller prior
to or concurrently with the date of such Association Estoppel  Certificate,  (C)
if the Association (or architectural review committee,  board or other group) is
required under the terms of the applicable Declaration to confirm that the plans
and  specifications  for the applicable Wells OP Improvements or Wells Affiliate
Improvements  have  been  approved  as may be  required  under the terms of such
Declaration,  then a statement that such plans and  specifications  have been so
approved, and (D) all amendments or modifications of the applicable Declaration;
provided,  however,  that if the closing of purchase and sale of any Property is
adjourned or postponed beyond the First Closing Date set forth in Section 2.7(a)
hereof for any reason  permitted  under this  Agreement or as  otherwise  may be
agreed by Seller and Purchaser and Sellers  theretofore  shall have obtained and
delivered an Association  Estoppel  Certificate meeting the requirements of this
Section 6.1(g) and dated within thirty (30) days of the First Closing Date, then
this condition  shall be deemed  satisfied as to such Property and Sellers shall
have no obligation to seek or obtain an updated Association Estoppel Certificate
as to such Property to comply with clause (i)  hereinabove.  Subject to the last
paragraph  of this  Section  6.1,  the  delivery  of said  Association  Estoppel
Certificates  from such  Associations  shall be a condition of Closing,  and the
failure or inability of Sellers to obtain and deliver said Association  Estoppel
Certificates,  each  applicable  Seller  having  used its good faith  efforts to
obtain the same shall not constitute a default by Sellers under this  Agreement.
Notwithstanding  anything to the contrary  contained


                                       82

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herein,  if the  applicable  Seller  has been  unable to obtain  and  deliver to
Purchaser by Closing the applicable Association Estoppel Certificate meeting the
requirements set forth above, then, at the option of such Seller, this condition
to Closing may be satisfied by such Seller's execution and delivery to Purchaser
at Closing,  on behalf of any  Association  having  rights  with  respect to the
Property of such Seller and which has failed to provide the required Association
Estoppel Certificate an estoppel certificate  substantially in the form attached
hereto as SCHEDULE 20 ("Seller's  Estoppel");  and provided that the  applicable
Seller's liability under any such Seller's Estoppel so executed and delivered by
such Seller to Purchaser at Closing shall cease and  terminate  upon the receipt
by Purchaser after Closing of a duly executed  Association  Estoppel Certificate
from the Association  covered in such Seller's  Estoppel to the extent that such
Association  Estoppel  Certificate conforms to Seller's Estoppel in all material
respects; and

                  (h)      Declarant Estoppel Certificates. A Declarant Estoppel
Certificate from each of the Declarants  under the Declarations  shall have been
delivered to  Purchaser,  with each such  estoppel  certificate  (i) to be dated
within thirty (30) days prior to the Closing  Date,  and (ii) to confirm (A) the
absence of any material defaults or violations under the applicable  Declaration
by the  applicable  Seller as "owner" as  defined in such  Declaration,  (B) the
payment of all amounts due from such Seller,  (C) if Declarant is required under
the  terms  of  the  applicable  Declaration  to  confirm  that  the  plans  and
specifications  for the  applicable  Wells OP  Improvements  or Wells  Affiliate
Improvements  have  been  approved  as may be  required  under the terms of such
Declaration,  then a statement that such plans and  specifications  have been so
approved, and (D) all amendments or modifications of the applicable Declaration.
Subject  to the  last  paragraph  of this  Section  6.1,  the  delivery  of said
Declarant  Estoppel  Certificates  from such Declarants  shall be a condition of
Closing,  and the failure or  inability  of Sellers to obtain and  deliver  said
Declarant  Estoppel  Certificates,  each applicable  Seller having used its good
faith  efforts to obtain  the same,  shall not  constitute  a default by Sellers
under this  Agreement;  provided,  however,  that if the closing of purchase and
sale of any Property is adjourned or postponed  beyond the initial First Closing
Date set forth in Section  2.7(a)  hereof for any  reason  permitted  under this
Agreement  or as  otherwise  may be agreed by Seller and  Purchaser  and Sellers
theretofore shall have obtained and delivered an Declarant Estoppel  Certificate
meeting the  requirements  of this Section  6.1(h) and dated within  thirty (30)
days of said initial  First Closing Date,  then this  condition  shall be deemed
satisfied as to such  Property and Sellers  shall have no  obligation to seek or
obtain an updated Declarant  Estoppel  Certificate as to such Property to comply
with clause (i) hereinabove.  Notwithstanding anything to the contrary contained
herein,  if the  applicable  Seller  has been  unable to obtain  and  deliver to
Purchaser by Closing the applicable  Declarant Estoppel  Certificate meeting the
requirements set forth above, then, at the option of such Seller, this condition
to Closing may be satisfied by such Seller's execution and delivery to Purchaser
at  Closing,  on behalf of any  Declarant  having  rights  with  respect  to the
Property of such Seller and which has failed to provide the  required  Declarant
Estoppel  Certificate,  a Seller's  Estoppel  substantially in the form attached
hereto as SCHEDULE 20; and provided that the applicable Seller's liability under
any such Seller's Estoppel so executed and delivered by such Seller to Purchaser
at Closing shall cease and terminate upon the receipt by Purchaser after Closing
of a duly executed Declarant Estoppel  Certificate from the Declarant covered in
such Seller's  Estoppel to the extent that such Declarant  Estoppel  Certificate
conforms to Seller's Estoppel in all material respects.


                                       83

Purchase and Sale Agreement





                  (i)      Gartner Lease Amendment and ISS Lease Amendment.  The
Gartner  Lease  Amendment  as  executed  by  Wells  Funds XI and XII REIT JV and
Gartner,  Inc., and the ISS Lease Amendment as executed by Wells OP and Internet
Security Systems, Inc., each of which lease amendments shall be substantially in
the forms  attached  hereto as  Exhibit  "CC" and  Exhibit  "DD",  respectively.
Subject to the last  paragraph  of this Section 6.1, the delivery of the Gartner
Lease Amendment and the ISS Lease Amendment shall be conditions to Closing,  and
the failure or inability of Sellers to obtain and delivery  either of said lease
amendments,  each applicable Seller having used its good faith efforts to obtain
the same from said tenants, shall not constitute a default by Sellers hereunder.

                  (j)      Final  C.O.'s for Alstom  Power  Property and Capital
One Property.  The delivery by Wells  Virginia REIT and Wells OP to Purchaser of
copies of final  certificates of occupancy for all  improvements  located on the
Alstom  Power  Property and the Capital One  Property,  or the delivery by Wells
Virginia  REIT and  Wells OP to  Purchaser  of other  evidence  satisfactory  to
Purchaser  that  final  certificates  of  occupancy  have  been  issued  by  the
applicable  governing  authorities  for all  improvements  located on the Alstom
Power Property and the Capital One Property.

In the  event any  condition  in this  Section  6.1 has not been  satisfied  (or
otherwise  waived in writing by  Purchaser)  prior to or on the Closing Date (as
the same may be extended or postponed as provided in this Agreement),  Purchaser
shall have the right to terminate  this  Agreement by written  notice to Sellers
given prior to the Closing, whereupon (i) Escrow Agent shall promptly return the
Earnest  Money to  Purchaser;  and (ii)  except  for  those  provisions  of this
Agreement  which  by  their  express  terms  survive  the  termination  of  this
Agreement, no party hereto shall have any other or further rights or obligations
under this Agreement.

         6.2.     Conditions Precedent to Sellers' Obligations.  The obligations
of Sellers hereunder to consummate the transactions contemplated hereunder shall
in all respects be conditioned  upon the  satisfaction  of each of the following
conditions prior to or simultaneously  with the Closing (or at such earlier time
as may be provided  below),  any of which may be waived by Sellers in their sole
discretion by written notice to Purchaser at or prior to the Closing Date:

                  (a)      Purchaser  shall  have paid and  Sellers  shall  have
received the Purchase Price, as adjusted pursuant to the terms and conditions of
this  Agreement,  which Purchase Price shall be payable in the amount and in the
manner provided for in this Agreement;

                  (b)      Purchaser  shall  have  performed,  in  all  material
respects,  all covenants,  agreements and undertakings of Purchaser contained in
this Agreement; and

                  (c)      All  representations  and  warranties of Purchaser as
set forth in this Agreement  shall be true and correct in all material  respects
as of the date of this  Agreement  and as of Closing,  provided  that solely for
purposes of this  subparagraph  such  warranties  and  representations  shall be
deemed to be given without being  limited to  Purchaser's  knowledge and without
modification (by update or otherwise, as provided in Section 5.2 hereof).


                                       84

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         6.3.     Conditions   Precedent   to  Purchase   and  Sale  of  Certain
Properties.

                  (a)      In addition  to and not in lieu of  Sections  6.1 and
6.2 above, the respective obligations of Purchaser and Sellers to consummate the
transaction  contemplated hereunder with respect to the Bank of America Property
shall in all  respects be  conditioned  upon the failure (or deemed  failure) of
Bank of America NT & SA, as tenant under its Lease affecting the Bank of America
Property,  to timely exercise its right to purchase the Bank of America Property
pursuant to the terms of its Lease. In the event that the Outstanding  ROFO/ROFR
Party shall timely exercise its right to purchase the Bank of America  Property,
Sellers shall promptly notify Purchaser in writing  thereof,  which notice shall
be accompanied by a true and correct copy of the notice of exercise  received by
the applicable Seller ("Seller's Partial Termination Notice"). Upon the delivery
by Seller to Purchaser of Seller's Partial  Termination  Notice,  this Agreement
shall  terminate the Bank of America  Property  which is the subject of Seller's
Partial Termination  Notice,  whereupon (1) the aggregate Purchase Price for the
Properties  as set forth in Section 2.5 hereof  shall be reduced by the Purchase
Price for the Bank of  America  Property  as set forth on EXHIBIT  "O"  attached
hereto;  (2) Escrow Agent shall promptly  return the Earnest Money  allocated to
the Bank of America Property (i.e., $1,500,000.00) to Purchaser; (3) the parties
hereto  shall  proceed to close the  purchase  and sale of the other  Properties
which are the subject of this Agreement;  and (4) except for those provisions of
this  Agreement  which by their express terms  survive the  termination  of this
Agreement, no party hereto shall have any other or further rights or obligations
under this Agreement with respect to the Bank of America Property.

                  (b)      In  addition  to and not in lieu of  Section  6.1 and
Section  6.2  above,  the  respective  obligations  of  Purchaser  and Seller to
consummate  the  transactions  contemplated  hereunder  with respect to the ASML
Property and the Ingram Micro Property shall in all respects be conditioned upon
the  written  approval  or consent of the  lessors  under the ASML Prime  Ground
Lease,  the  ASML  Sub-Ground  Lease  and the  Ingram  Micro  Bond  Lease to the
transfers,  respectively,  of the leasehold estates in the ASML Property and the
Ingram Micro Property to Purchaser.


                                   ARTICLE 7.
                            CASUALTY AND CONDEMNATION

         7.1.     Casualty.  Risk of loss up to and  including  the Closing Date
shall be borne by Sellers.  In the event of any immaterial damage or destruction
to the  Properties  of a Seller or any portion  thereof,  Sellers and  Purchaser
shall proceed to close under this Agreement, and Purchaser will receive (and the
applicable  Seller whose  Property or Properties was or were the subject of such
damage or  destruction  will assign to Purchaser  at the Closing  such  Seller's
rights under insurance  policies to receive) any insurance  proceeds  (including
any rent loss insurance  applicable to any period on and after the Closing Date)
due such  Seller as a result of such  damage or  destruction  (less any  amounts
reasonably  expended for  restoration  or  collection  of  proceeds)  and assume
responsibility  for such repair, and Purchaser shall receive a credit at Closing
for any deductible  amount under said insurance  policies.  For purposes of this
Agreement,  the term  "immaterial  damage or destruction"  shall be applied on a
Property  by  Property  basis  and  shall  mean  such  instances  of  damage  or
destruction of the subject Property:


                                       85

Purchase and Sale Agreement





(i) which can be  repaired or restored at a cost equal to or less than an amount
equal to five percent (5%) of the Purchase Price of such Property,  as set forth
on the attached  Exhibit "O"; (ii) which can be restored and repaired within one
hundred  eighty  (180) days from the date of such damage or  destruction;  (iii)
which are not so  extensive  as to allow any Major  Tenant of such  Property  to
terminate  its Lease  with  respect  to such  Property  or abate or reduce  rent
payable thereunder (unless business loss or rent insurance shall be available in
the  full  amount  of  such  abatement  or  reduction,   subject  to  applicable
deductibles)  on account of such damage or  destruction;  and (iv) in which such
Seller's  rights under its rent loss insurance  policies  covering such Property
are assignable to Purchaser and will continue pending  restoration and repair of
the damage or destruction.

         In the event of any material  damage or  destruction  to one or more of
the Properties or any portion thereof,  Purchaser may, at its option,  by notice
to Sellers  given  within the  earlier of twenty  (20) days after  Purchaser  is
notified by Sellers of such damage or  destruction,  or the Closing Date, but in
no event less than ten (10) days after  Purchaser  is notified by Seller of such
damage or  destruction  (and if necessary  the Closing Date shall be extended to
give Purchaser the full 10-day period to make such election): (i) terminate this
Agreement  as to any such  Property  which is the subject of material  damage or
destruction  (an  "Excluded  Property"),  or (ii)  proceed  to close  under this
Agreement,  receive (and each Seller will assign to Purchaser at the Closing the
rights of such  Seller  under  insurance  policies  to  receive)  any  insurance
proceeds (including any rent loss insurance applicable to the period on or after
the  Closing  Date) due such  Seller as a result of such  damage or  destruction
(less any amounts reasonably expended for restoration or collection of proceeds)
and assume  responsibility for such repair, and Purchaser shall receive a credit
at Closing for any deductible amount under said insurance policies. If Purchaser
fails to deliver to Sellers  notice of its election  within the period set forth
above, Purchaser will conclusively be deemed to have elected to proceed with the
Closing as provided  in clause  (ii) of the  preceding  sentence.  If  Purchaser
elects clause (ii) above,  each Seller will cooperate  with Purchaser  after the
Closing  to assist  Purchaser  in  obtaining  the  insurance  proceeds  from the
insurers of such Seller.  For  purposes of this  Agreement  "material  damage or
destruction"  shall mean all  instances  of damage or  destruction  that are not
immaterial, as defined herein.

         7.2.     Condemnation. If, prior to the Closing, all or any part of the
Properties of a Seller is subjected to a bona fide threat of  condemnation  by a
body  having  the  power of  eminent  domain  or is taken by  eminent  domain or
condemnation  (or sale in lieu  thereof),  or if a Seller has  received  written
notice that any condemnation action or proceeding with respect to the Properties
of such  Seller is  contemplated  by a body  having the power of eminent  domain
(collectively,  a "Taking"),  such Seller shall give Purchaser immediate written
notice of such Taking. In the event of any immaterial Taking with respect to the
Properties  of a Seller or any  portion  thereof,  Sellers and  Purchaser  shall
proceed to close under this Agreement.  For purposes of this Agreement, the term
"immaterial  Taking" shall be applied on a Property by Property  basis and shall
mean such instances of Taking of the subject  Property:  (i) which do not result
in a taking of any portion of the building structure of the building occupied by
tenants on such  Property;  (ii) which do not result in a decrease in the number
of parking spaces at such Property (taking into account the number of additional
parking spaces that can be provided within one hundred eighty (180) days of such
Taking); and (iii) which are not so extensive as to allow any Major


                                       86

Purchase and Sale Agreement





Tenant of such  Property to terminate its Lease with respect to such Property or
abate or reduce rent payable  thereunder [unless business loss or rent insurance
(subject to applicable  deductibles)  or  condemnation  award  proceeds shall be
available in the full amount of such abatement or reduction, and Purchaser shall
receive a credit at  Closing  for such  deductible  amount]  on  account of such
Taking.

         In the event of any material Taking of one or more of the Properties or
any portion  thereof (any such Property also being referred to in this Agreement
as an "Excluded  Property"),  Purchaser may, at its option, by written notice to
Sellers given within thirty (30) days after the receipt of such notice from such
Seller, elect to terminate this Agreement only as to any such Excluded Property.
If  Purchaser  chooses  to  terminate  this  Agreement  as to any such  Excluded
Property  in  accordance  with  this  Section  7.2,  then  the  rights,  duties,
obligations,   and  liabilities  of  the  parties  hereunder  shall  immediately
terminate as to any such  Excluded  Property only and be of no further force and
effect,  except for those  provisions of this  Agreement  which by their express
terms survive the termination of this Agreement.  For purposes of this Agreement
"material  Taking" shall mean all instances of a Taking that are not immaterial,
as defined herein.

         If  Purchaser  does not elect to,  or has no right to,  terminate  this
Agreement as to any Property in accordance herewith on account of a Taking, this
Agreement  shall remain in full force and effect and the sale of the  Properties
contemplated  by this  Agreement,  less any interest  taken by eminent domain or
condemnation,  or  sale in lieu  thereof,  shall  be  effected  with no  further
adjustment and without reduction of the Purchase Price, and at the Closing, each
Seller  shall  assign,  transfer,  and set over to  Purchaser  all of the right,
title,  and  interest  of such  Seller in and to any  awards  applicable  to the
Properties of such Seller that have been or that may thereafter be made for such
taking. At such time as all or a part of the Properties of a Seller is subjected
to a bona fide threat of  condemnation  and Purchaser  shall not have elected to
terminate  this  Agreement as to any such Excluded  Property only as provided in
this  Section  7.2,  and  provided  that the  Inspection  Period has expired and
Purchaser has delivered the Earnest Money to Escrow Agent,  (i) Purchaser  shall
thereafter be permitted to participate in the proceedings as if Purchaser were a
party to the action, and (ii) such Seller shall not settle or agree to any award
or payment  pursuant to  condemnation,  eminent domain,  or sale in lieu thereof
without obtaining Purchaser's prior written consent thereto in each case.

                                   ARTICLE 8.
                              DEFAULT AND REMEDIES

         8.1.     Purchaser's  Default.  If Purchaser  fails to consummate  this
transaction  for any reason  other than the  default  of  Sellers,  failure of a
condition to Purchaser's obligation to close, or the exercise by Purchaser of an
express right of termination granted herein, Sellers shall be entitled, as their
sole remedy hereunder, to terminate this Agreement and to receive and retain the
Earnest  Money as full  liquidated  damages for such default of  Purchaser,  the
parties  hereto  acknowledging  that it is impossible to estimate more precisely
the damages  which might be suffered by Sellers upon  Purchaser's  default,  and
that said Earnest Money is a reasonable estimate of the probable loss of Sellers
in the event of default by  Purchaser.  The retention by Sellers of said Earnest
Money is intended not as a penalty, but as full liquidated damages. The


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right to retain the  Earnest  Money as full  liquidated  damages is the sole and
exclusive remedy of Sellers in the event of default hereunder by Purchaser,  and
Sellers  hereby  waive and release any right to (and hereby  covenant  that they
shall not) sue the Purchaser: (a) for specific performance of this Agreement, or
(b) to recover  actual  damages in excess of the Earnest  Money.  The  foregoing
liquidated  damages provision shall not apply to or limit Purchaser's  liability
for Purchaser's  obligations under Sections 3.1(b), 3.1(c), 3.7 and 10.1 of this
Agreement or for  Purchaser's  obligation to pay to Sellers all attorney's  fees
and costs of Sellers to enforce the  provisions  of this Section 8.1.  Purchaser
hereby waives and releases any right to (and hereby covenants that it shall not)
sue  Sellers or either of them or seek or claim a refund of said  Earnest  Money
(or any part  thereof) on the grounds it is  unreasonable  in amount and exceeds
the actual  damages of Sellers or that its  retention by Sellers  constitutes  a
penalty and not agreed upon and reasonable liquidated damages.

         8.2.     Seller's  Default.  If  Sellers or any of them fail to perform
any of their  respective  obligations  under this Agreement for any reason other
than  Purchaser's  default or the  permitted  termination  of this  Agreement by
Sellers or any of them or  Purchaser  as expressly  provided  herein,  Purchaser
shall be entitled,  as its sole remedy,  either (a) to receive the return of the
Earnest  Money from Escrow Agent,  which return shall operate to terminate  this
Agreement and release  Sellers from any and all liability  hereunder;  provided,
however,  that in the event,  and only in the event,  such default by any Seller
was willful and  intentional  and  Purchaser  receives the return of the Earnest
Money,  then Sellers shall pay to Purchaser an amount equal to the lesser of (i)
Purchaser's actual  out-of-pocket  expenditures  incurred directly in conducting
due diligence  activities  contemplated  under this Agreement and in negotiating
and  finalizing  this  Agreement,   or  (ii)  Ten  Million  and  No/100  Dollars
($10,000,000.00),  or (b) to enforce  specific  performance of the obligation of
each Seller to execute and deliver the documents required to convey the Property
owned by such Seller to Purchaser in accordance  with this  Agreement;  it being
specifically understood and agreed that the remedy of specific performance shall
not be  available  to  enforce  any other  obligation  of Sellers or any of them
hereunder.  Notwithstanding the foregoing,  if after January 7, 2005, any Seller
shall have conveyed title to such Seller's Property to another party (other than
to the  Outstanding  ROFO/ROFR  Party  pursuant  to the timely  exercise by such
Outstanding  ROFO/ROFR  Party of its  ROFO/ROFR  Rights)  or  intentionally  and
knowingly  taken any other action to defeat the remedy of specific  performance,
Purchaser  shall be entitled  to seek actual  damages  from  Sellers.  Except as
expressly  provided to the  contrary in this Section  8.2,  Purchaser  expressly
waives its rights to seek  damages in the event of the default of Sellers or any
of them  hereunder.  Purchaser shall be deemed to have elected to terminate this
Agreement  and to  receive  a return of the  Earnest  Money  applicable  to such
Property  from  Escrow  Agent  if  Purchaser  fails to file  suit  for  specific
performance  against each applicable  Seller who is in breach of its obligations
hereunder in a court having  jurisdiction on or before sixty (60) days following
the date upon which the Closing was to have occurred.

                                   ARTICLE 9.
                                   ASSIGNMENT

         9.1.     Assignment.  Subject  to the  next  following  sentence,  this
Agreement and all rights and  obligations  hereunder  shall not be assignable by
any  party  without  the  written  consent  of the  other.  Notwithstanding  the
foregoing to the contrary, (i) this Agreement and all of


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Purchaser's  rights  hereunder  may be  transferred  and  assigned to any entity
controlled by Purchaser or one or more of  Purchaser's  joint venture  partners,
and (ii) only contemporaneously  with the Closing hereunder,  Purchaser's rights
under this Agreement with respect to any one or more of the separate  Properties
may be transferred and assigned to any entity  controlled by Purchaser or one or
more of Purchaser's  joint venture  partners so that the applicable  Property or
Properties as to which the transfer and assignment  relates shall be conveyed to
the  applicable  assignee and such assignee shall become the  "Purchaser"  under
this  Agreement as to such  Property or  Properties.  Any assignee or transferee
under any such  assignment  or  transfer  by  Purchaser  as to which the written
consent  of Seller  has been  given or as to which the  consent of Seller is not
required hereunder shall expressly assume all of Purchaser's duties, liabilities
and obligations  under this Agreement  (whether  arising or accruing prior to or
after the applicable  assignment or transfer) by written instrument delivered to
Seller as a condition  to the  effectiveness  of such  assignment  or  transfer,
except  that  any  assignee  or  transferee   under  a  transfer  or  assignment
effectuated  contemporaneously  with  the  Closing  under  clause  (ii)  of  the
preceding sentence shall be required to assume only such of Purchaser's  duties,
liabilities and  obligations  under this Agreement that relate to the particular
Property or Properties as to which the transfer and assignment relates, and upon
such  assumption  by the  assignee  or  transferee,  except  for the  duties and
obligations  arising under Purchaser's  indemnities set forth in Sections 3.1(c)
and 10.1 of this Agreement,  the original  Purchaser shall be released and shall
have no further  liabilities,  duties or  obligations  under this Agreement that
relate to such  particular  Property or  Properties as to which the transfer and
assignment  relates.  No assignment or transfer  effectuated under clause (i) of
this  Section  9.1  shall  relieve  the  original  Purchaser  of any  duties  or
obligations hereunder, and the written assignment and assumption agreement shall
expressly so provide.  No assignment or transfer  effectuated  under clause (ii)
above shall relieve the original Purchaser of any duties and obligations arising
under Purchaser's  indemnities set forth in Sections 3.1(c) and 10.1 hereof. For
purposes of this Section 9.1, the term "control"  shall mean the ownership of at
least fifty percent (50%) of the  applicable  entity.  Subject to the foregoing,
this  Agreement  shall be  binding  upon and shall  inure to the  benefit of the
parties  hereto  and their  respective  legal  representatives,  successors  and
permitted assigns.  This Agreement is not intended and shall not be construed to
create any rights in or to be enforceable in any part by any other persons.

                                   ARTICLE 10.
                              BROKERAGE COMMISSIONS

         10.1.    Broker.  Upon the  Closing,  and only in the event the Closing
occurs, Sellers shall pay a brokerage commission to Eastdil Realty Company, LLC,
a  New  York  limited  liability  company  ("Broker"),  pursuant  to a  separate
agreement  between Sellers and Broker.  Broker is  representing  Sellers in this
transaction.  Broker  has  joined in the  execution  of this  Agreement  for the
purpose of  acknowledging  and agreeing that no real estate  commission shall be
earned by it or due it if the transaction contemplated herein does not close for
any reason whatsoever.  Broker acknowledges and agrees that it shall look solely
to Sellers, and not to Purchaser, for the payment of such commission, and Broker
hereby  waives and releases any present or future claims  against  Purchaser for
the  payment  of such  commission.  In  addition,  Broker  (upon  receipt of its
brokerage  commission) agrees to execute and deliver to Sellers and Purchaser at
the Closing a release and waiver of any claim Broker may have against  Purchaser
or the Properties.


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Broker shall and does hereby  indemnify and hold Purchaser and Sellers  harmless
from and  against  any and all  liability,  loss,  cost,  damage,  and  expense,
including reasonable  attorneys' fees actually incurred and costs of litigation,
Purchaser  or  Sellers  shall ever  suffer or incur  because of any claim by any
agent, salesman, or broker, whether or not meritorious,  for any fee, commission
or other  compensation with regard to this Agreement or the sale and purchase of
the Properties contemplated hereby, and arising out of any acts or agreements of
Broker.  Each Seller shall and does hereby indemnify and hold Purchaser harmless
from and  against  any and all  liability,  loss,  cost,  damage,  and  expense,
including reasonable  attorneys' fees actually incurred and costs of litigation,
Purchaser  shall  ever  suffer  or incur  because  of any  claim  by any  agent,
salesman,  or broker,  whether or not  meritorious,  for any fee,  commission or
other compensation with regard to this Agreement or the sale and purchase of the
Properties  contemplated  hereby,  and arising out of any acts or  agreements of
such Seller, including any claim asserted by Broker.  Likewise,  Purchaser shall
and does hereby  indemnify  and hold Sellers free and harmless  from and against
any and all liability,  loss, cost,  damage, and expense,  including  reasonable
attorneys'  fees actually  incurred and costs of litigation,  Sellers shall ever
suffer or incur because of any claim by any agent,  salesman, or broker, whether
or not meritorious,  for any fee,  commission or other compensation with respect
to this Agreement or the sale and purchase of the Properties contemplated hereby
and arising out of the acts or agreements of Purchaser.  This Section 10.1 shall
survive  the  Closing  until  the  expiration  of  any  applicable   statute  of
limitations and shall survive any earlier termination of this Agreement.

                                   ARTICLE 11.
                                 INDEMNIFICATION

         11.1.    Indemnification by Sellers.  Following the Closing and subject
to Sections 11.3 and 11.4, each Seller shall  indemnify and hold Purchaser,  its
affiliates,  members and  partners,  and the partners,  shareholders,  officers,
directors,  employees,  representatives  and  agents  of each  of the  foregoing
(collectively,  "Purchaser-Related  Entities") harmless from and against any and
all  costs,  fees,  expenses,  damages,  deficiencies,  interest  and  penalties
(including,  without limitation,  reasonable  attorneys' fees and disbursements)
suffered or incurred by any such  indemnified  party in connection  with any and
all losses,  liabilities,  claims, damages and expenses ("Losses"),  arising out
of, or in any way relating to, (a) any breach of any  representation or warranty
of such Seller contained in this Agreement or in any Closing  Document,  and (b)
any breach of any  covenant of such Seller or of Sellers  jointly  contained  in
this Agreement which survives the Closing or in any Closing Document.

         11.2.    Indemnification  by  Purchaser.   Following  the  Closing  and
subject to Sections  11.3 and 11.4,  Purchaser  (and  Purchaser's  joint venture
partners to whom any rights of Purchaser  are  assigned  pursuant to Section 9.1
hereof) shall indemnify and hold Sellers, their respective  affiliates,  members
and partners, and the partners,  shareholders,  officers, directors,  employees,
representatives   and   agents   of   each  of  the   foregoing   (collectively,
"Seller-Related  Entities")  harmless from any and all Losses arising out of, or
in any way  relating  to, (a) any breach of any  representation  or  warranty by
Purchaser  contained in this Agreement or in any Closing  Document,  and (b) any
breach of any covenant of Purchaser  contained in this Agreement  which survives
the Closing or in any Closing Documents.


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         11.3.    Limitations on Indemnification.  Notwithstanding the foregoing
provisions  of Section  11.1,  (a) Sellers  shall not be  required to  indemnify
Purchaser or any Purchaser  Related  Entities  under this  Agreement  unless the
aggregate  of all amounts for which an indemnity  would  otherwise be payable by
Sellers  under  Section 11.1 above  exceeds the Basket  Limitation  and, in such
event Sellers shall be  responsible  for only the amount in excess of the Basket
Limitation (the "Excess Amount"), with Wells OP responsible only for that amount
equal to the Excess Amount  multiplied by a fraction,  the numerator of which is
the sum of (i) the  individual  liability of Wells OP under  Section 11.1 above,
plus (ii) a percentage  of the joint (and not  individual)  liability of Sellers
under Section 11.1 above,  with such percentage to be equal to one one-hundredth
(1/100th)  multiplied  by the quotient  obtained by dividing the total  Purchase
Price for the Wells OP  Properties  by the total  Purchase  Price for all of the
Properties, and with each Wells Affiliate responsible only for that amount equal
to the Excess Amount multiplied by a fraction, the numerator of which is the sum
of (i) the  individual  liability  of such Wells  Affiliate  under  Section 11.1
above,  plus (ii) a percentage  of the joint (and not  individual)  liability of
Sellers  under  Section  11.1  above,  with such  percentage  to be equal to one
one-hundredth  (1/100th)  multiplied  by the  quotient  obtained by dividing the
Purchase Price for the Wells Affiliate Property owned by such Wells Affiliate by
the total  Purchase Price for all of the  Properties,  (b) in no event shall the
liability of Sellers with respect to the indemnification provided for in Section
11.1  above  exceed in the  aggregate  the Cap  Limitation,  (c) if prior to the
Closing,  Purchaser  obtains knowledge in writing of any inaccuracy or breach of
any representation,  warranty or covenant of Sellers or any of them contained in
this Agreement (a  "Purchaser-Waived  Breach") and nonetheless proceeds with and
consummates the Closing, then Purchaser and any Purchaser-Related Entities shall
be deemed to have waived and forever  renounced  any right to assert a claim for
indemnification under this Article 11 for, or any other claim or cause of action
under   this   Agreement,   at  law  or  in  equity  on   account  of  any  such
Purchaser-Waived   Breach,  and  (d)  notwithstanding  anything  herein  to  the
contrary,  the Basket  Limitation  and the Cap  Limitation  shall not apply with
respect to Losses  suffered or incurred as a result of breaches of any  covenant
or agreement  of Sellers or any of them set forth in Section  5.3,  Section 5.4,
Section  10.1,  EXHIBIT "R" or "EXHIBIT "V" of this  Agreement.  Notwithstanding
anything to the  contrary  set forth in Section  11.1 or in this  Section  11.3,
Wells OP agrees that Wells OP shall be jointly and  severally  liable with Wells
Virginia  REIT,  Wells Brea,  Wells  Westlake,  Wells  Farmington  Hills,  Wells
Kalamazoo  and Wells EDS with respect to all  obligations  of each such party to
Purchaser under Section 11.1 above and this Section 11.3.

         11.4.    Survival.   The  representations,   warranties  and  covenants
contained  in this  Agreement  and the Closing  Documents  with  respect to each
Property shall survive until the first (1st)  anniversary of the closing of each
such Property,  unless a longer or shorter survival period is expressly provided
for in this Agreement,  or unless prior to such first (1st)  anniversary date of
such Closing,  Purchaser or Seller,  as the case may be, delivers written notice
to the other party of such alleged breach  specifying with reasonable detail the
nature of such alleged  breach and files an action with respect  thereto  within
one hundred twenty (120) days after the giving of such notice.

         11.5.    Indemnification  as Sole Remedy.  If the Closing has occurred,
the sole and exclusive  remedy  available to a party in the event of a breach by
the other party to this Agreement of any representation,  warranty,  or covenant
or other provision of this Agreement or


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any Closing  Document which  survives the Closing shall be the  indemnifications
provided for under Section 3.1(c), Section 10.1, and this Article 11.

                                   ARTICLE 12.
                                  MISCELLANEOUS

         12.1.    Notices.   Wherever  any  notice  or  other  communication  is
required or permitted hereunder,  such notice or other communication shall be in
writing and shall be delivered by overnight  courier,  hand,  facsimile or other
electronic  transmission,  or sent by U.S.  registered or certified mail, return
receipt  requested,  postage prepaid,  to the addresses or facsimile numbers set
out  below  or at such  other  addresses  as are  specified  by  written  notice
delivered in accordance herewith:

         PURCHASER:             Lexington Corporate Properties Trust
                                One Penn Plaza
                                Suite 4015
                                New York, New York  10119-4015
                                Attention:  Richard Rouse and Natasha Roberts
                                Facsimile:  212.594.6600
                                Email:  rrouse@lxp.com and nroberts@lxp.com

         with a copy to:        Paul, Hastings, Janofsky & Walker, LLP
                                75 East 55th Street
                                New York, New York  10022
                                Attention:  Katherine B. Lipton, Esquire
                                Facsimile:  212.230.7673
                                Email:  katherinelipton@paulhastings.com

         SELLERS:               c/o Wells Real Estate Funds
                                6200 The Corners Parkway
                                Norcross, Georgia  30092
                                Attention:  Mr. F. Parker Hudson
                                Facsimile:  770.243.4684
                                Email:  parker.hudson@wellsref.com

         with a copy to:        Troutman Sanders LLP
                                Suite 5200
                                600 Peachtree Street, N.E.
                                Atlanta, Georgia 30308-2216
                                Attn:  John W. Griffin and Leslie Fuller Secrest
                                Facsimile:  404.962.6577 and 404.962.6678
                                Email:  john.griffin@troutmansanders.com and
                                         leslie.secrest@troutmansanders.com

Any notice or other  communication  (i) mailed as hereinabove  provided shall be
deemed  effectively  given or received on the third (3rd) Business Day following
the postmark date of such


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notice or other  communication,  (ii) sent by overnight courier or by hand shall
be  deemed  effectively  given or  received  upon  receipt,  and  (iii)  sent by
facsimile or other electronic  transmission shall be deemed effectively given or
received  on the day of such  electronic  transmission  of such  notice or other
communication and confirmation of such transmission if transmitted and confirmed
prior to 6:00 p.m. local  Atlanta,  Georgia time on a Business Day and otherwise
shall be deemed  effectively  given or received on the first  Business Day after
the day of  transmission of such notice and  confirmation of such  transmission.
Refusal to accept delivery shall be deemed delivered.

         12.2     Possession. Full and exclusive possession of the Properties of
each Seller,  subject to the Permitted  Exceptions and the rights of the tenants
under the Leases affecting such Properties, shall be delivered by such Seller to
Purchaser on the Closing Date.

         12.3     Time Periods.  If the time period by which any right,  option,
or election provided under this Agreement must be exercised, or by which any act
required  hereunder  must be  performed,  or by which the Closing  must be held,
expires on a  Saturday,  Sunday,  or  holiday,  then such time  period  shall be
automatically  extended  through  the close of  business  on the next  regularly
scheduled Business Day.

         12.4     Publicity.  The  parties  agree that,  prior to  Closing,  and
except for disclosures required by law or governmental regulations applicable to
such party, no party shall,  with respect to this Agreement and the transactions
contemplated  hereby,  contact or conduct  negotiations with public officials or
make any public  announcements  regarding  this  Agreement  or the  transactions
contemplated  hereby to any third party without the prior written consent of the
other party  hereto.  Except for  disclosures  required  by law or  governmental
regulations  applicable to such party,  Sellers and Purchaser shall each deliver
to the other the press  release  of the other  party to be issued in  connection
with the execution of this Agreement and in connection  with the Closing no less
than three (3) hours during normal business hours on a Business Day prior to the
issuance of any such press release.  No party shall record this Agreement or any
notice  hereof;  and neither party shall file a copy of this  Agreement with the
SEC until the filing of their respective  Quarterly Reports on Form 10-Q for the
current quarter, except for any recording or filing otherwise required under the
United  States  securities  laws or as may be  required  by the  SEC;  provided,
however,  that (i) in the  event  Purchaser  is so  required,  it shall  provide
Sellers reasonable advance notice of any such required filing, and (ii) any such
required filing shall exclude all schedules and exhibits to this Agreement.

         12.5     Discharge of  Obligations.  The acceptance by Purchaser of the
Limited  Warranty Deeds of Sellers  hereunder  shall be deemed to constitute the
full  performance  and discharge of each and every  warranty and  representation
made by Sellers or any of them and  Purchaser  herein  and every  agreement  and
obligation  on the  part of  Sellers  or  either  of them  and  Purchaser  to be
performed  pursuant to the terms of this  Agreement,  except  those  warranties,
representations,  covenants and agreements  which are  specifically  provided in
this Agreement to survive Closing.

         12.6     Severability.  This  Agreement  is intended to be performed in
accordance  with,  and only to the extent  permitted  by, all  applicable  laws,
ordinances,  rules and regulations.  If any provision of this Agreement,  or the
application thereof to any person or circumstance, shall, for


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any reason and to any extent be invalid or unenforceable,  the remainder of this
Agreement  and  the   application   of  such   provision  to  other  persons  or
circumstances  shall not be affected thereby but rather shall be enforced to the
greatest extent permitted by law.

         12.7     Construction.  This  Agreement  shall  not be  construed  more
strictly  against one party than  against the other merely by virtue of the fact
that this Agreement may have been prepared by counsel for one of the parties, it
being  mutually  acknowledged  and agreed that Sellers and  Purchaser  and their
respective  counsel  have  contributed   substantially  and  materially  to  the
preparation and negotiation of this Agreement.  Accordingly,  the normal rule of
construction to the effect that any  ambiguities are to be resolved  against the
drafting party shall not be employed in the  interpretation of this Agreement or
any exhibits or amendments hereto.

         12.8     Sale  Notification  Letters.  Promptly  following the Closing,
Purchaser  shall  deliver the Tenant  Notices of Sale to each of the  respective
tenants  under the  Leases,  the  Ground  Lessor  Notices of Sale to each of the
respective  Ground  Lessors  under  the Wells OP Ground  Leases,  the  Declarant
Notices to each of the respective  Declarants  under the  Declarations,  and the
Other  Notices  of  Sale  to  each  service  provider  and  leasing  agent,  the
obligations under whose respective  Service Contracts and Commission  Agreements
Purchaser has assumed at Closing.

         12.9     Access to Records Following Closing. Purchaser agrees that for
a period of one (1) year following the Closing, each Seller shall have the right
during regular business hours, on five (5) days' written notice to Purchaser, to
examine and review at Purchaser's  office (or, at Purchaser's  election,  at the
Properties),  the books and records of such Seller relating to the ownership and
operation of the  Properties of such Seller which were  delivered by such Seller
to Purchaser at the Closing.  Likewise,  each Seller agrees that for a period of
one (1) year  following  the  Closing,  Purchaser  shall  have the right  during
regular  business  hours,  on five (5) days' written  notice to such Seller,  to
examine and review at such Seller's  office,  all books,  records and files,  if
any,  retained by such Seller  relating to the ownership and operation by Seller
prior to the Closing of the  Properties of such Seller.  The  provisions of this
Section shall survive the Closing for a period of one (1) year after the Closing
Date.

         12.10    Submission  to  Jurisdiction.  Each of  Purchaser  and Sellers
irrevocably  submits to the exclusive  jurisdiction of (a) the Superior Court of
Gwinnett County,  Georgia located in Lawrenceville,  Georgia, and (b) the United
States  District Court for the Northern  District of Georgia for the purposes of
any suit,  action  or other  proceeding  arising  out of this  Agreement  or any
transaction  contemplated  hereby.  Each of Purchaser and Sellers further agrees
that service of any process, summons, notice or document by U.S. registered mail
to such party's respective address set forth above shall be effective service of
process  for any  action,  suit or  proceeding  in Georgia  with  respect to any
matters to which it has  submitted  to  jurisdiction  as set forth  above in the
immediately  preceding  sentence.  Each of Purchaser and Sellers irrevocably and
unconditionally  waives trial by jury and irrevocably and unconditionally waives
any objection to the laying of venue of any action,  suit or proceeding  arising
out of  this  Agreement  or the  transactions  contemplated  hereby  in (a)  the
Superior Court of Gwinnett County,  Georgia located in  Lawrenceville,  Georgia,
and (b) the United States  District Court for the Northern  District of Georgia,
and hereby  further  irrevocably  and  unconditionally  waives and agrees not to
plead or


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claim in any such court that any such action,  suit or proceeding brought in any
such court has been brought in an inconvenient forum.

         12.11    General  Provisions.  No failure of any party to exercise  any
power given  hereunder or to insist upon strict  compliance  with any obligation
specified  herein,  and no custom or practice at variance with the terms hereof,
shall  constitute a waiver of any party's right to demand exact  compliance with
the terms hereof.  This Agreement  contains the entire  agreement of the parties
hereto, and no representations,  inducements,  promises, or agreements,  oral or
otherwise,  between  the parties not  embodied  herein  shall be of any force or
effect.  Any  amendment to this  Agreement  shall not be binding upon Sellers or
Purchaser  unless  such  amendment  is in writing  and  executed  by Sellers and
Purchaser.  Subject to the  provisions of Section 9.1 hereof,  the provisions of
this  Agreement  shall inure to the  benefit of and be binding  upon the parties
hereto  and their  respective  heirs,  legal  representatives,  successors,  and
permitted  assigns.  Time is of the  essence  in this  Agreement.  The  headings
inserted at the beginning of each paragraph are for convenience only, and do not
add to or subtract  from the meaning of the  contents  of each  paragraph.  This
Agreement  shall be construed,  interpreted  and enforced  under the laws of the
State of Georgia.  Except as otherwise provided herein, all rights,  powers, and
privileges  conferred  hereunder  upon the parties shall be  cumulative  but not
restrictive to those given by law. All personal pronouns used in this Agreement,
whether used in the  masculine,  feminine,  or neuter  gender shall  include all
genders,  and all references herein to the singular shall include the plural and
vice versa.

         12.12    Like-Kind Exchange . The parties hereto desire, and each party
is willing  to  cooperate  (subject  to the  limitations  set forth  below),  to
effectuate the sale of any one or more of the Properties by means of an exchange
of  "like-kind"  property  which will qualify as such under  Section 1031 of the
Internal  Revenue  Code of 1986,  as amended,  and the  regulations  promulgated
thereunder.  Each party expressly  reserves the right to assign its rights,  but
not its obligations, hereunder to a qualified intermediary as provided in I.R.C.
Reg.  1.1031(k)-1(g)(4)  on or before the date of Closing.  Upon written  notice
from either party (a  "Requesting  Party") to the other,  the party to whom such
notice is given (the "Other  Party")  agrees to  cooperate  with the  Requesting
Party to effect one or more  like-kind  exchanges  with  respect to the Property
designated by such Requesting  Party in its notice to the Other Party,  provided
that such  cooperation  shall be subject to the following  conditions:  (a) such
exchange shall not delay the Closing and shall occur either  simultaneously with
the Closing or the purchase money proceeds payable to such Seller shall be paid,
upon such Seller's prior written direction to Purchaser, to a third party escrow
agent or  intermediary  such that Purchaser shall not be required to participate
in any subsequent  closing,  (b) the Requesting  Party shall not be obligated to
spend any sums or incur any  expenses in excess of the sums and  expenses  which
would have been spent or incurred by the  Requesting  Party if there had been no
exchange, (c) Purchaser shall not be obligated to acquire or accept title to any
property other than the applicable Property to be conveyed to Purchaser pursuant
to this  Agreement,  and (d) Seller  shall not be obligated to acquire or accept
title to any property.  The Other Party makes no representation or warranty that
the  conveyance  of any Property or property made pursuant to this Section 12.12
shall  qualify for a like-kind  exchange.  Once  Purchaser has paid the purchase
money  proceeds as  directed by such  Seller,  or such Seller has  conveyed  the
Property as directed by Purchaser, it shall have no further obligation hereunder
with  respect  to  such  "like-kind"  exchange.  Each  Requesting  Party  hereby


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indemnifies  and holds the Other  Party  harmless  from and  against  any costs,
liabilities  and expenses  incurred or suffered by the Other Party in connection
with the "like-kind"  exchange or exchanges  described  herein,  which indemnity
shall survive the Closing  until the  expiration  of any  applicable  statute of
limitations.

         12.13    Attorney's Fees. If Purchaser or Sellers or any of them brings
an action at law or equity  against the other in order to enforce the provisions
of this Agreement or as a result of an alleged default under this Agreement, the
prevailing  party in such action  shall be  entitled to recover  court costs and
reasonable attorney's fees actually incurred from the other.

         12.14    Counterparts.  This  Agreement  may be executed in one or more
counterparts,  each of which when taken  together  shall  constitute one and the
same original.  To facilitate the execution and delivery of this Agreement,  the
parties  may  execute  and  exchange  counterparts  of the  signature  pages  by
facsimile,  and the  signature  page of either party to any  counterpart  may be
appended to any other counterpart.

         12.15    Effective  Agreement.  The  submission  of this  Agreement for
examination  is not  intended  to nor shall  constitute  an offer to sell,  or a
reservation  of, or  option  or  proposal  of any kind for the  purchase  of the
Properties.  In no event shall any draft of this Agreement create any obligation
or liability,  it being  understood  that this Agreement  shall be effective and
binding  only  when a  counterpart  of this  Agreement  has  been  executed  and
delivered by each party hereto.


                     [Signatures commence on following page]


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         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the day, month and year first above written.

                                   SELLERS:

                                   WELLS OPERATING PARTNERSHIP, L.P.,
                                   a Delaware limited partnership

                                   By: Wells Real Estate Investment Trust, Inc.,
                                       a Maryland corporation, its sole general
                                       partner


                                       By:
                                           -------------------------------------
                                       Name:
                                            ------------------------------------
                                       Title:
                                             -----------------------------------


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                    [Signatures Continued from Previous Page]


                                   WELLS  FUND  XIII  -  REIT   JOINT   VENTURE
                                   PARTNERSHIP, a Georgia general partnership

                                   By: Wells Real Estate Fund XIII, L.P.,
                                       a Georgia limited partnership, general
                                       partner

                                       By: Wells Capital, Inc.,
                                           a Georgia corporation, general
                                           partner


                                           By:
                                               ---------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------



                                       By:
                                          --------------------------------------
                                           Leo F. Wells III, general partner


                                   By: Wells Operating Partnership, L.P., a
                                       Delaware limited partnership, general
                                       partner

                                       By: Wells Real Estate Investment Trust,
                                           Inc., a Maryland corporation, general
                                           partner


                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------


                       [Signatures Continued on Next Page]


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                    [Signatures Continued From Previous Page]



                                   WELLS FUND XII - REIT JOINT VENTURE
                                   PARTNERSHIP, a Georgia general partnership

                                   By: Wells Real Estate Fund XII, L.P.,
                                       a Georgia limited partnership, general
                                       partner

                                   By: Wells Partners, L.P.,
                                       a Georgia limited partnership, general
                                       partner

                                       By: Wells Capital, Inc.,
                                           a Georgia corporation, general
                                           partner


                                           By:
                                               ---------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------



                                       By:
                                          --------------------------------------
                                           Leo F. Wells III, general partner



                                   By: Wells Operating Partnership, L.P., a
                                       Delaware limited partnership, general
                                       partner

                                       By: Wells Real Estate Investment Trust,
                                           Inc., a Maryland corporation, as its
                                           general partner


                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------



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                    [Signatures Continued from Previous Page]


                                   WELLS REIT, LLC, VA I,
                                   a Georgia limited liability company

                                   By: Wells Operating Partnership, L.P.,
                                       a Delaware limited partnership, its sole
                                       member

                                       By: Wells Real Estate Investment Trust,
                                           Inc., a Maryland corporation, its
                                           sole general partner

                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------


                       [Signatures Continued on Next Page]


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                                   DANACQ FARMINGTON HILLS LLC,
                                   a Delaware limited liability company

                                   By: Wells Operating Partnership, L.P.,
                                       a Delaware limited partnership, its sole
                                       member

                                       By: Wells Real Estate Investment Trust,
                                           Inc., a Maryland corporation, its
                                           sole general partner


                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------


                       [Signatures Continue on Next Page]


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                                   DANACQ KALAMAZOO LLC,
                                   a Delaware limited liability company

                                   By: Wells Operating Partnership, L.P.,
                                       a Delaware limited partnership, its sole
                                       member

                                       By: Wells Real Estate Investment Trust,
                                           Inc., a Maryland corporation, its
                                           sole general partner


                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------


                       [Signatures Continued on Next Page]


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                    [Signatures Continued From Previous Page]


                                   WELLS BREA I, L.P.,
                                   a Delaware limited partnership

                                   By: Wells Brea, LLC, a Delaware
                                       limited liability company, its sole
                                       general partner

                                       By: Wells Operating Partnership, L.P.,
                                           a Delaware limited partnership, its
                                           sole member

                                           By: Wells Real Estate Investment
                                               Trust, Inc., a Maryland
                                               corporation, its sole general
                                               partner


                                               By:
                                                  ------------------------------
                                               Name:
                                                    ----------------------------
                                               Title:
                                                     ---------------------------


                       [Signatures Continued On Next Page]


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                    [Signatures Continued From Previous Page]



                                   WESTLAKE WELLS, L.P.,
                                   a Texas limited partnership

                                   By: Wells Real Estate Westlake, TX, LLC, a
                                       Delaware limited liability company,
                                       general partner

                                       By: Wells Operating Partnership, L.P.,
                                           a Delaware limited partnership, sole
                                           member

                                           By: Wells Real Estate Investment
                                               Trust, Inc., a Maryland
                                               corporation, its sole general
                                               partner


                                               By:
                                                  ------------------------------
                                               Name:
                                                    ----------------------------
                                               Title:
                                                     ---------------------------


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                    [Signatures Continued From Previous Page]

                                   THE WELLS FUND XI - FUND XII - REIT
                                   JOINT VENTURE, a Georgia general partnership

                                   By: Wells Operating Partnership, L.P.,
                                       a Delaware limited partnership, general
                                       partner

                                       By:
                                          --------------------------------------
                                       Name:
                                            ------------------------------------
                                       Title:
                                             -----------------------------------

                                   By: Wells Real Estate Fund XI, L.P., a
                                       Georgia limited partnership, general
                                       partner

                                   By: Wells Partners, L.P.,
                                       a Georgia limited partnership, general
                                       partner

                                       By: Wells Capital, Inc.,
                                           a Georgia corporation, general
                                           partner

                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------


                                           By:
                                              ----------------------------------
                                               Leo F. Wells III, general partner

                                   By: Wells Real Estate Fund XII, L.P.,
                                       a Georgia limited partnership, general
                                       partner

                                   By: Wells Partners, L.P.,
                                       a Georgia limited partnership, general
                                       partner

                                       By: Wells Capital, Inc.,
                                           a Georgia corporation, general
                                           partner

                                           By:
                                              ----------------------------------
                                           Name:
                                                --------------------------------
                                           Title:
                                                 -------------------------------

                                       By:
                                          --------------------------------------
                                           Leo F. Wells III, general partner

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                    [Signatures Continued from Previous Page]



                                   WELLS - EDS DES MOINES, L.P.,
                                   a Texas limited partnership

                                   By: Wells Real Estate - Des Moines, IA, LLC,
                                       a Delaware limited liability company,
                                       general partner

                                       By: Wells Operating Partnership, L.P.,
                                           a Delaware limited partnership, its
                                           sole member

                                           By: Wells Real Estate Investment
                                               Trust, Inc., a Maryland
                                               corporation, its sole general
                                               partner


                                               By:
                                                  ------------------------------
                                               Name:
                                                    ----------------------------
                                               Title:
                                                     ---------------------------


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                                   PURCHASER:

                                   LEXINGTON CORPORATE PROPERTIES TRUST,
                                   a Maryland statutory real estate investment
                                   trust


                                   By:
                                       -----------------------------------------
                                       Richard J. Rouse, Chief Investment
                                       Officer



         IN WITNESS WHEREOF,  the undersigned Broker has joined in the execution
and  delivery  hereof  solely  for the  purpose  of  evidencing  its  rights and
obligations under the provisions of Section 10.1 hereof.

                                       BROKER:

                                       EASTDIL REALTY COMPANY, LLC, a New
                                       York limited liability company,
Date of Execution:
                                       By:
                                          --------------------------------------
                                       Name:
                                            ------------------------------------
_____________________, 2005            Title:
                                             -----------------------------------


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