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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Ev5qSfNGaEZCXEKChYWJJamfpnUoA2U1KNolnq8CWpVt5p5j8Jb70w9YMrlPa147
 qjBQFCGOkOass6LqNtanAw==

<SEC-DOCUMENT>0001104659-05-046865.txt : 20051003
<SEC-HEADER>0001104659-05-046865.hdr.sgml : 20051003
<ACCEPTANCE-DATETIME>20051003162746
ACCESSION NUMBER:		0001104659-05-046865
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050930
FILED AS OF DATE:		20051003
DATE AS OF CHANGE:		20051003

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMERIVEST PROPERTIES INC
		CENTRAL INDEX KEY:			0000927102
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				841240264
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1780 S BELLAIRE ST
		STREET 2:		SUITE 515
		CITY:			DENVER
		STATE:			CO
		ZIP:			80222
		BUSINESS PHONE:		3032971800

	MAIL ADDRESS:	
		STREET 1:		1780 S. BELLAIRE ST.
		STREET 2:		SUITE 515
		CITY:			DENVER
		STATE:			CO
		ZIP:			80222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GELLES HARRY P
		CENTRAL INDEX KEY:			0001252190

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14462
		FILM NUMBER:		051117931

	BUSINESS ADDRESS:	
		STREET 1:		C/O AMERIVEST PROPERTIES INC
		STREET 2:		1780 S. BELLAIRE ST. #100
		CITY:			DENVER
		STATE:			CO
		ZIP:			80222
		BUSINESS PHONE:		3032971800X118

	MAIL ADDRESS:	
		STREET 1:		C/O AMERIVEST PROPERTIES INC
		STREET 2:		1780 S. BELLAIRE ST #100
		CITY:			DENVER
		STATE:			CO
		ZIP:			80222
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-09-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000927102</issuerCik>
        <issuerName>AMERIVEST PROPERTIES INC</issuerName>
        <issuerTradingSymbol>AMV</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252190</rptOwnerCik>
            <rptOwnerName>GELLES HARRY P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1114 STATE STREET, SUITE 236</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SANTA BARBARA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>93101</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2005-09-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.09</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11303</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Kim Boswood as attorney-in-fact</signatureName>
        <signatureDate>2005-10-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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