<SEC-DOCUMENT>9999999997-11-002804.txt : 20110309
<SEC-HEADER>9999999997-11-002804.hdr.sgml : 20110309
<ACCEPTANCE-DATETIME>20110309153136
<PAPER>
ACCESSION NUMBER:		9999999997-11-002804
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101127
FILED AS OF DATE:		20110303
DATE AS OF CHANGE:		20110309
EFFECTIVENESS DATE:		20110303

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CommonWealth REIT
		CENTRAL INDEX KEY:			0000803649
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				046558834
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09317
		FILM NUMBER:		11005279

	BUSINESS ADDRESS:	
		STREET 1:		400 CENTRE ST
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458
		BUSINESS PHONE:		6177968350

	MAIL ADDRESS:	
		STREET 1:		400 CENTRE STREET
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02458

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HRPT PROPERTIES TRUST
		DATE OF NAME CHANGE:	19980701

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HEALTH & RETIREMENT PROPERTIES TRUST
		DATE OF NAME CHANGE:	19940811

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HEALTH & REHABILITATION PROPERTIES TRUST
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>ARS
<SEQUENCE>1
<FILENAME>9999999997-11-002804.paper
<DESCRIPTION>AUTO-GENERATED PAPER DOCUMENT
<TEXT>
This document was generated as part of a paper submission.
Please reference the Document Control Number 11005279 for access to the original document.
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>