Exhibit 99.2 CERTIFICATION PURSUANT TO THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report on Form 10-K of Franklin Street Properties Corp. (the "Company") for the year ended December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned, Barbara J. Corinha, Vice President, Chief Operating Officer, Treasurer and Secretary 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 operations of the Company. A signed original of this written statement has been provided to Franklin Street Properties Corp. and will be retained by Franklin Street Properties Corp. and furnished to the Securities and Exchange Commission or its staff upon request. Date: March 26, 2003 /s/ Barbara J. Corinha ---------------------- Barbara J. Corinha Vice President, Chief Operating Officer (equivalent of Chief Financial Officer), Treasurer and Secretary