EX32_1

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SEC. 1350

In connection with the filing by Senior Housing Properties Trust (the “Company”) of the Quarterly Report on Form 10-Q for the period ended March 31, 2016 (the “Report”), each of the undersigned hereby certifies, to the best of his knowledge:

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.


/s/ Barry M. Portnoy		/s/ David J. Hegarty
Barry M. Portnoy		David J. Hegarty
Managing Trustee		President and Chief Operating Officer


/s/ Adam D. Portnoy		/s/ Richard W. Siedel, Jr.
Adam D. Portnoy		Richard W. Siedel, Jr.
Managing Trustee		Chief Financial Officer and Treasurer

Date: May 5, 2016