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                                                                    EXHIBIT 10.2


                    AMENDMENT TO PURCHASE AND SALE AGREEMENT

         THIS AMENDMENT TO PURCHASE AND SALE AGREEMENT ("Amendment") is entered
into as of the ______ day of July, 1998 by and between the undersigned parties.

                              W I T N E S S E T H:

         WHEREAS, the undersigned entered into that certain Purchase and Sale
Agreement, dated as of May 10, 1998 (the "Agreement"), regarding the sale of
certain real property located in Prince William County, Virginia, which property
is more particularly described in the Agreement (the "Property");

         WHEREAS, the parties desire to amend the Agreement as set forth below.

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto agree as
follows:

         1.       The undersigned hereby agree that Section 2.02 is hereby 
amended as follows:

         a.       The Initial Deposit (in the amount of $32,500 together with 
all interest earned thereon) currently held by Escrow Agent shall,
simultaneously with the execution of this Amendment, be wire transferred to
Seller in accordance with the instructions set forth in Exhibit A, attached
hereto and made a part hereof, to be held by Seller in accordance with the terms
set forth in the Agreement;

         b.       Section 2.02(b) is hereby deleted and the following is 
substituted in lieu thereof:

                  "(b)   Buyer shall upon execution of this Amendment, deliver 
                  to Seller via cure transfer an additional earnest money
                  deposit in the amount of $113,500 (the "Additional Deposit")"

         c.       Section 2.02 (e) of the Agreement is hereby deleted in its 
entirety and the following is substituted in lieu thereof:

                  "(e)   At the time of execution of this Amendment, Buyer shall
                  deliver to Seller (in accordance with the wire transfer
                  instructions set forth in Exhibit A) the Additional Deposit
                  (in the amount of $113,500) and a supplemental deposit in the
                  amount of $64,000 (the "Supplemental Deposit"). The Initial
                  Deposit, Additional Deposit and Supplemental Deposit shall
                  hereinafter be referred to as the "Deposit." The term
                  "Deposit" as used herein shall, in addition to referring to
                  the Initial Deposit, the Additional Deposit and the
                  Supplemental Deposit may also be deemed to refer to any one of
                  the terms Initial Deposit, Additional Deposit or Supplemental
                  Deposit, as the context requires. The Deposit, together with
                  all interest earned through the date hereof with respect


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                  to the Initial Deposit, if any, shall be applied to the
                  Purchase Price at Closing and shall be non-refundable to the
                  Buyer unless Seller shall default in tendering the Deed and
                  other closing documents described in Section 10.01 to Buyer at
                  Closing."

         2.       The Escrow Agent is hereby authorized and instructed to 
transfer the Initial Deposit, together with any interest earned thereon, to the
Seller as described in paragraph 1. above and is hereby released from any and
all obligations or responsibilities relating to the Deposit.

         3.       Section 3.01 of the Agreement is hereby deleted in its
entirety and the following is substituted in lieu thereof:

                  "3.01  Closing. All documents necessary or appropriate to
                  transfer the Project shall be delivered and closing (the
                  "Closing") shall be held on, or in Buyer's sole discretion,
                  provided that Seller is furnished with five (5) days prior
                  written notice of the earlier Closing Date, before September
                  30, 1998 at the offices of Hale and Dorr LLP, 1455
                  Pennsylvania Avenue, N.W., Washington, D.C. 20004.

         4.       Section 3.02 of the Agreement is hereby deleted in its
entirety and the following is substituted in lieu thereof:

                  "3.02  Conditions to Closing. There are no conditions 
                  precedent to Buyer's obligation to close hereunder.
                  Notwithstanding anything to the contrary contained in the
                  Agreement, any and all conditions precedent to Closing, or any
                  provisions set forth in the Agreement whereby Buyer has the
                  option to terminate the Agreement, are hereby waived and
                  deemed satisfied by Buyer and Buyer shall proceed to Closing
                  on or before September 30, 1998. In the event Buyer does not
                  close on or before September 30, 1998, Seller shall retain the
                  Deposit, including all interest earned thereon, in accordance
                  with Section 13.04."

         5.       Except as amended herein, the Agreement is hereby confirmed to
remain in full force and effect.

         6.       Capitalized terms not otherwise defined herein shall have the
meanings ascribed to them in the Agreement.

         7.       This Amendment may be executed in counterparts, each of which
shall be deemed to be an original but all of which shall be one and the same
document.


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         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the date first above written.


                              Battlefield/Virginia, Inc., a Virginia corporation


                              By:      
                                       ---------------------------------
                                       Louai Alassar
                                       President

                              DDR Office Flex Corporation, an Ohio corporation



                              By:      
                                       ---------------------------------
                                       James A. Schoff
                                       Executive Vice President and Chief
                                       Operating Officer


JOINDER BY ESCROW AGENT

Commercial Title Group, Ltd., referred to in the Agreement as the "Escrow Agent"
hereby acknowledges the instructions set forth above to transfer the Initial
Deposit, together with all interest earned thereon, to Seller in accordance with
the provisions set forth above.


Commercial Title Group, Ltd.


By:      
         --------------------------
         Douglas Nichols
         President




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