MPG Office Trust POS AM Prospectus update (post-effective amendment)

Exhibit 23.3

Consent of Independent Registered Public Accounting Firm

The Board of Directors

MPG Office Trust, Inc.:

We consent to the use of our reports dated March 15, 2013, with respect to the consolidated balance sheets of MPG Office Trust, Inc. and subsidiaries as of December 31, 2012 and 2011, and the related consolidated statements of operations, comprehensive income/(loss), deficit, and cash flows for each of the years in the three-year period ended December 31, 2012, and the effectiveness of internal control over financial reporting as of December 31, 2012, incorporated herein by reference and to the reference to our firm under the heading “Experts” in the prospectus.

/s/ KPMG LLP

Los Angeles, California

March 15, 2013