    <SEC-DOCUMENT>0001104659-15-034597-index.html : 20150506
    <SEC-HEADER>0001104659-15-034597.hdr.sgml : 20150506
    <ACCEPTANCE-DATETIME>20150506095121
    ACCESSION NUMBER:		0001104659-15-034597
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20150506
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20150506
    DATE AS OF CHANGE:		20150506

    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:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15319
    		FILM NUMBER:		15835373

    	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>8-K
    <SEQUENCE>1
    <FILENAME>a15-10880_18k.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a15-10880_18k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>a15-10880_1ex99d1.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: a15-10880_1ex99d1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>a15-10880_1ex99d2.pdf
    <DESCRIPTION>EX-99.2 PDF
    <TEXT>
    Document 3 - file: a15-10880_1ex99d2.pdf

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g108801mm01i001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g108801mm01i001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g108801mm01i002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g108801mm01i002.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>