Exhibit 23.1


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements
(Form S-8 No. 333-91680 and Form S-3 No. 333-134405) of Franklin Street
Properties Corp. of our reports dated February 20, 2007, with respect to the
consolidated financial statements and schedule of Franklin Street Properties
Corp., Franklin Street Properties Corp. management's assessment of the
effectiveness of internal control over financial reporting, and the
effectiveness of internal control over financial reporting of Franklin Street
Properties Corp., included in this Annual Report (Form 10-K) for the year ended
December 31, 2006.

                                                           /s/ ERNST & YOUNG LLP

Boston, Massachusetts
February 20, 2007