<SEC-DOCUMENT>0001104659-15-032305-index.html : 20150430
<SEC-HEADER>0001104659-15-032305.hdr.sgml : 20150430
<ACCEPTANCE-DATETIME>20150430135831
ACCESSION NUMBER:		0001104659-15-032305
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20150430
DATE AS OF CHANGE:		20150430
EFFECTIVENESS DATE:		20150430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SENIOR HOUSING PROPERTIES TRUST
		CENTRAL INDEX KEY:			0001075415
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				043445278
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15319
		FILM NUMBER:		15817206

	BUSINESS ADDRESS:	
		STREET 1:		TWO NEWTON PLACE
		STREET 2:		255 WASHINGTON STREET
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
		BUSINESS PHONE:		6173323990

	MAIL ADDRESS:	
		STREET 1:		TWO NEWTON PLACE
		STREET 2:		255 WASHINGTON STREET
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a15-10291_1defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a15-10291_1defa14a.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g102911bei001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g102911bei001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g102911bci001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g102911bci001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g102911bgi001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g102911bgi001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g102911bgi002.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g102911bgi002.gif

</DOCUMENT>
</SEC-DOCUMENT>