Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Trustees

Pennsylvania Real Estate Investment Trust:

We consent to the incorporation by reference in the registration statement (File No. 333-169488, as amended, File No. 333-155723, as amended, File No. 333-155722, File No. 333-144607, File No. 333-144606, File No. 333-121962, as amended, File No. 333-110926, File No. 333-109849, File No. 333-109848, File No. 333-97679, File No. 333-97337, File No. 333-36626, File No. 333-74693, File No. 333-74695, File No. 333-70157, as amended, File No. 333-48917, as amended) on Form S-3 and (File No. 333-169487, File No. 333-148237, File No. 333-103116, File No. 333-97677, File No. 333-69877, File No. 33-59767, File No. 33-59771, File No. 33-59773) on Form S-8 of Pennsylvania Real Estate Investment Trust of our reports dated March 1, 2010, with respect to the consolidated balance sheets of Pennsylvania Real Estate Investment Trust and subsidiaries as of December 31, 2010 and 2009, and the related consolidated statements of operations, equity and comprehensive income, and cash flows for each of the years in the three-year period ended December 31, 2010, and the related financial statement schedule, and the effectiveness of internal control over financial reporting as of December 31, 2010, which reports appear in the December 31, 2010 annual report on Form 10-K of Pennsylvania Real Estate Investment Trust.