<SUBMISSION>
<ACCESSION-NUMBER>0001209191-04-013670
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20040301
<FILING-DATE>20040302
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>QUANTA SERVICES INC
<CIK>0001050915
<ASSIGNED-SIC>1731
<IRS-NUMBER>742851603
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>1360 POST OAK BLVD
<STREET2>SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
<PHONE>7133506000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1360 POST OAK BLVD SUITE 2100
<CITY>HOUSTON
<STATE>TX
<ZIP>77056
</MAIL-ADDRESS>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>FIRST RESERVE FUND IX L P
<CIK>0001233497
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>04642707
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ONE LAFAYETTE PLACE
<CITY>GREENWICH
<STATE>CT
<ZIP>06830
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>FIRST RESERVE GP IX  L P
<CIK>0001233496
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>04642708
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ONE LAFAYETTE PLACE
<CITY>GREENWICH
<STATE>CT
<ZIP>06830
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>FIRST RESERVE GP IX INC
<CIK>0001168363
<STATE-OF-INCORPORATION>DE
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>04642709
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ONE LAFAYETTE PLACE
<STREET2>THIRD FLOOR
<CITY>GREENWICH
<STATE>CT
<ZIP>06830
<PHONE>203-661-6601
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>ONE LAFAYETTE PLACE
<STREET2>THIRD FLOOR
<CITY>GREENWICH
<STATE>CT
<ZIP>06830
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-03-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001050915</issuerCik>
        <issuerName>QUANTA SERVICES INC</issuerName>
        <issuerTradingSymbol>PWR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001168363</rptOwnerCik>
            <rptOwnerName>FIRST RESERVE GP IX INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE LAFAYETTE PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>THIRD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>GREENWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001233496</rptOwnerCik>
            <rptOwnerName>FIRST RESERVE GP IX  L P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE LAFAYETTE PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>THIRD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>GREENWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001233497</rptOwnerCik>
            <rptOwnerName>FIRST RESERVE FUND IX L P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE LAFAYETTE PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>THIRD FLOOR</rptOwnerStreet2>
            <rptOwnerCity>GREENWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-03-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3259000.0000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.3000</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>38999630.0000</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See FN</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sale of all shares as reported on this Form 4 were made by First Reserve Fund IX, L.P.</footnote>
        <footnote id="F2">Consists of (i) 38,916,204 shares of Common Stock held by First Reserve Fund IX, L.P., (ii) 33,445 shares of Common Stock held by Ben A. Guill, a director of the Issuer, and (iii) 49,981 shares of Common Stock held by Thomas Sikorski, a director of the Issuer, for an aggregate of 38,999,630 shares of Common Stock.  The Fund Entities (see, FN 3) share beneficial ownership of such Common Stock held by Messrs. Guill and Sikorski.  Messrs. Guill and Sikorski disclaim any beneficial ownership of any securities of the Issuer held by the Fund Entities.</footnote>
        <footnote id="F3">This Form 4 is being filed on behalf of First Reserve GP IX, Inc. (&quot;GP IX, Inc.&quot;), First Reserve GP IX, L.P. (&quot;GP IX&quot;), and First Reserve Fund IX, L.P (&quot;Fund IX&quot;), each as 10% beneficial owners (collectively the &quot;Fund Entities&quot;).  GP IX, Inc. is the general partner of GP IX, and GP IX is the general partner of Fund IX.  The Fund Entities beneficially own the shares of common stock as reported on this Form 4.</footnote>
    </footnotes>

    <remarks>First Reserve GP IX, Inc., by Thomas R. Denison, is signing for itself as the designated filer, as well as in the capacity of general partner of GP IX.  GP IX is signing for Fund IX, as its general partner.</remarks>

    <ownerSignature>
        <signatureName>Thomas R. Denison, Managing Director</signatureName>
        <signatureDate>2004-03-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Thomas R. Denison</signatureName>
        <signatureDate>2004-03-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Thomas R. Denison</signatureName>
        <signatureDate>2004-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
