<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>4
<FILENAME>ex32-1.txt
<TEXT>

                                                                    Exhibit 32.1

                CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

                             AS ADOPTED PURSUANT TO

                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the amended quarterly report on Form 10-Q/A of Franklin
Street Properties Corp. (the "Company") for the period ended June 30, 2003 as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), the undersigned, George J. Carter, President and Chief Executive
Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350,
that:

            (1)   the Report fully complies with the requirements of Section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

            (2)   the information contained in the Report fairly presents, in
                  all material respects, the financial condition and results of
                  operation of the Company.


Dated: May 26, 2004              /s/ George J. Carter
                                 -------------------------------------
                                 George J. Carter
                                 President and Chief Executive Officer


                                       36

</TEXT>
</DOCUMENT>
