<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-06-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000844789</issuerCik>
        <issuerName>US HOME SYSTEMS INC</issuerName>
        <issuerTradingSymbol>USHS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001079748</rptOwnerCik>
            <rptOwnerName>MURPHY KENNETH W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3401 LEE PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>APT. 2005</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75219</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.76</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-06-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2011-06-05</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-06-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On June 5, 2009, pursuant to the non-employee director compensation plan, the Board of Directors awarded Mr. Murphy options to purchase 2,000 shares of the Company's common stock at an exercise price of $2.76 per share.  The options vest 33 1/3% on date of grant and 33 1/3% on each anniversary of the grant date.  The options are fully vested on June 5, 2011 and expire on June 5, 2019.</footnote>
        <footnote id="F2">After all reported transactions, Mr. Murphy owns 34,661 shares which includes 2,000 shares held by the Estate of Shirley Murphy Trust of which Kenneth Murphy is the Trustee and contols the voting of such shares and holds options to purchase 2,000 shares at an exercise price of $1.85 which expire on 11/11/2018 and options to purchase 2,000 shares at $2.76 per share which expire on 6/5/2019.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Kenneth W. Murphy</signatureName>
        <signatureDate>2009-06-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
