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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001249607</rptOwnerCik>
            <rptOwnerName>BUCHHOLZ DON A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1201 ELM STREET STE 3500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75270</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>2007-12-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>583</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.36</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>487511</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See note (2).</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-01-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>909</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.5</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>488420</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note (2).</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents payment to director with restricted stock awards in lieu of cash payment as allowed pursuant to the Company's Director Compensation Plan.</footnote>
        <footnote id="F2">Mr. Buchholz is deemed a beneficial owner of 357,154 shares of USHS common stock owned by SWS Group since he is the chairman of the board of SWS Group.  After all reported transactions, Mr. Buchholz directly owns 81,266 shares of USHS common stock and indirectly owns 407,154 shares which includes 50,000 shares held by Union Hill Investments and 357,154 shares held by SWS Group, Inc. Union Hill Investments is a general partnership.  The partners are Don A. Buchholz, his spouse (Ruth Buchholz), his son (Robert Buchholz) and his daughter (Chrystine B. Roberts).  Robert Buchholz has voting and investment power with regard to the 50,000 shares owned by the partnership.  Don A. Buchholz and his spouse jointly own a one-third interest in the partnership and his son and daughter each own a one-third interest.</footnote>
        <footnote id="F3">Represents payment to director with restricted stock awards in lieu of cash payment as allowed pursuant to the Company's Director Compensation Plan.</footnote>
        <footnote id="F4">Mr. Buchholz is deemed a beneficial owner of 357,154 shares of USHS common stock owned by SWS Group since he is the chairman of the board of SWS Group.  After all reported transactions, Mr. Buchholz directly owns 81,266 shares of USHS common stock and indirectly owns 407,154 shares which includes 50,000 shares held by Union Hill Investments and 357,154 shares held by SWS Group, Inc. Union Hill Investments is a general partnership.  The partners are Don A. Buchholz, his spouse (Ruth Buchholz), his son (Robert Buchholz) and his daughter (Chrystine B. Roberts).  Robert Buchholz has voting and investment power with regard to the 50,000 shares owned by the partnership.  Don A. Buchholz and his spouse jointly own a one-third interest in the partnership and his son and daughter each own a one-third interest.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Don A. Buchholz</signatureName>
        <signatureDate>2008-01-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
