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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0000906107-06-000069.txt : 20060907
<SEC-HEADER>0000906107-06-000069.hdr.sgml : 20060907
<ACCEPTANCE-DATETIME>20060907151548
ACCESSION NUMBER:		0000906107-06-000069
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060905
FILED AS OF DATE:		20060907
DATE AS OF CHANGE:		20060907

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EQUITY RESIDENTIAL
		CENTRAL INDEX KEY:			0000906107
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				363877868
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		EQUITY RESIDENTIAL
		STREET 2:		2 N RIVERSIDE PLAZA, STE 400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129281178

	MAIL ADDRESS:	
		STREET 1:		TWO N RIVERSIDE PLAZA
		STREET 2:		SUITE 450
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EQUITY RESIDENTIAL PROPERTIES TRUST
		DATE OF NAME CHANGE:	19930524

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TUOMI FREDERICK C
		CENTRAL INDEX KEY:			0001221308

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12252
		FILM NUMBER:		061079170

	BUSINESS ADDRESS:	
		STREET 1:		EQUITY RESIDENTIAL
		STREET 2:		2 N RIVERSIDE PLAZA, STE 400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3126697670
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

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    <periodOfReport>2006-09-05</periodOfReport>

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            <rptOwnerName>TUOMI FREDERICK C</rptOwnerName>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHICACGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Vice President</officerTitle>
            <otherText></otherText>
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            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>25.844</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-09-05</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>50.03</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2002-01-18</value>
            </exerciseDate>
            <expirationDate>
                <value>2011-01-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares of Beneficial Interest</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>42536</value>
                    <footnoteId id="F8"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F6">Share options reported on this line will become exercisable in three equal installments on February 3, 2006; February 3, 2007 and February 3, 2008.</footnote>
        <footnote id="F7">Share options reported on this line become exercisable in three equal installments on February 3, 2007, February 3, 2008 and February 3, 2009.</footnote>
        <footnote id="F4">One-third of the share options reported on this line are exercisable; one-third will become exercisable on July 11, 2003; and one-third will become exercisable on July 11, 2004.</footnote>
        <footnote id="F1">Shares reported on this line are owned directly and some of the shares (including the shares which are subject to the grant award reported herein) are subject to vesting.</footnote>
        <footnote id="F5">Share options reported on this line will become exercisable in three equal installments on January 27, 2005; January 27, 2006 and January 27, 2007.</footnote>
        <footnote id="F2">Shares reported herein are owned by the AST Trust Company, as Trustee of the Equity Residential Supplemental Retirement Plan for the benefit of the reporting person and were acquired through Equity Residential's Employee Share Purchase Plan.</footnote>
        <footnote id="F8">55,024 share options reported herein are currently exercisable; and 27,512 share options will become exercisable on January 18, 2004.</footnote>
        <footnote id="F3">18,229 share options reported herein are currently exercisable; 18,229 share options are scheduled to vest on January 16, 2004; 18,229 share options are scheduled to vest on January 16, 2005.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Barbara Shuman, Attorney-in-fact</signatureName>
        <signatureDate>2006-09-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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