<SEC-DOCUMENT>0001104659-18-008255-index.html : 20180212
<SEC-HEADER>0001104659-18-008255.hdr.sgml : 20180212
<ACCEPTANCE-DATETIME>20180212081036
ACCESSION NUMBER:		0001104659-18-008255
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20180208
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180212
DATE AS OF CHANGE:		20180212

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:		18593932

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE RMR GROUP
		STREET 2:		TWO NEWTON PL., 255 WASH. ST., STE. 300
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
		BUSINESS PHONE:		(617) 796-8350

	MAIL ADDRESS:	
		STREET 1:		C/O THE RMR GROUP
		STREET 2:		TWO NEWTON PL., 255 WASH. ST., STE. 300
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
</SEC-HEADER>
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Document 1 - file: a18-5754_18k.htm

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Document 2 - file: a18-5754_1ex1d1.htm

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<DOCUMENT>
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<SEQUENCE>3
<FILENAME>a18-5754_1ex4d1.htm
<DESCRIPTION>EX-4.1
<TEXT>
Document 3 - file: a18-5754_1ex4d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>a18-5754_1ex5d1.htm
<DESCRIPTION>EX-5.1
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Document 4 - file: a18-5754_1ex5d1.htm

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<FILENAME>a18-5754_1ex5d2.htm
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Document 5 - file: a18-5754_1ex5d2.htm

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<DESCRIPTION>EX-8.1
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Document 6 - file: a18-5754_1ex8d1.htm

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<FILENAME>g57541kii001.jpg
<DESCRIPTION>GRAPHIC
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Document 7 - file: g57541kii001.jpg

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Document 8 - file: g57541kii002.jpg

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Document 9 - file: g57541kii003.jpg

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<FILENAME>g57541ksi001.jpg
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Document 10 - file: g57541ksi001.jpg

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Document 11 - file: g57541ksi002.jpg

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Document 12 - file: g57541ksi003.jpg

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<TEXT>
Document 13 - file: g57541kki001.jpg

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