<DOCUMENT>
<TYPE>EX-23.3
<SEQUENCE>5
<FILENAME>ex23-3.txt
<TEXT>

                                                                    Exhibit 23.3


            Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Franklin Street
Properties Corp. for the registration of shares of its common stock and to the
incorporation by reference therein of our reports dated February 21, 2006, 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 the Franklin Street Properties Corp. Annual Report
(Form 10-K) for the year ended December 31, 2005, filed with the Securities and
Exchange Commission on February 24, 2006.

                                                      /s/ Ernst & Young LLP

Boston, Massachusetts
May 23, 2006

</TEXT>
</DOCUMENT>
