<SUBMISSION>
<ACCESSION-NUMBER>0001209191-03-005535
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20030522
<FILING-DATE>20030527
<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>03719616
</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 FUND IX L P
<CIK>0001233497
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>03719615
</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
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>03719617
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>1801 CALIFORNIA ST
<STREET2>SUITE 4110
<CITY>DENVER
<STATE>CO
<ZIP>80202
</MAIL-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>SIKORSKI THOMAS
<CIK>0001202000
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>03719613
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1801 CALIFORNIA STREET
<STREET2>SUITE 4110
<CITY>DENVER
<STATE>CO
<ZIP>80202
<PHONE>3033821270
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>GUILL BEN A
<CIK>0001201989
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-13831
<FILM-NUMBER>03719614
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1801 CALIFORNIA STREET
<STREET2>SUITE 4110
<CITY>DENVER
<STATE>CO
<ZIP>80202
<PHONE>3033821270
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<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>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>bdn06345_bdn1frg.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0101</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-05-22</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>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></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>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></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>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><reportingOwner><reportingOwnerId><rptOwnerCik>0001201989</rptOwnerCik><rptOwnerName>GUILL BEN A</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><reportingOwner><reportingOwnerId><rptOwnerCik>0001202000</rptOwnerCik><rptOwnerName>SIKORSKI THOMAS</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-05-22</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>12245</value><footnoteId id="F1" /></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>42258630</value><footnoteId id="F2" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>See Footnote 3</value><footnoteId id="F3" /></natureOfOwnership></ownershipNature></nonDerivativeSecurity><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-05-22</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>12245</value><footnoteId id="F1" /></transactionShares><transactionValue><value>0</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>42258630</value><footnoteId id="F2" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>See Footnote 3</value><footnoteId id="F3" /></natureOfOwnership></ownershipNature></nonDerivativeSecurity><footnotes><footnote id="F1">The common stock reported on this Form 4 was granted to Messrs. Guill and Sikorski under the issuer's 2001 Stock Incentive Plan.</footnote><footnote id="F2">The Fund Entities are the record holder of 42,175,204 shares of common stock.  In addition, the Fund Entities may be deemed to beneficially own 33,445 shares of common stock held of record by Mr. Guill, and 49,981 shares of common stock held of record by Mr. Sikorski, for an aggregate of 42,258,630 shares of common stock.</footnote><footnote id="F3">This Form 4 is being filed on behalf of First Reserve GP IX, Inc. (GP IX, Inc), First Reserve GP IX, L.P. (GP IX), and First Reserve Fund IX, L.P. (Fund IX), each as 10% beneficial owners (collectively, the Fund Entities), and by Ben A. Guill and Thomas J. Sikorski, directors of the issuer.  GP IX is the general partner of Fund IX, and GP IX, Inc. is the general partner of GP IX.  The Fund Entities are entitled to a portion of the profits from any sale of stock held by Messrs. Guill and Sikorski, and therefore share beneficial ownership of such common stock.  Messrs. Guill and Sikorski disclaim any beneficial ownership of any securities of the issuer held by the Fund Entities.</footnote></footnotes><ownerSignature><signatureName>First Reserve GP IX, Inc. for itself as well as in the capacity of general partner of GP IX.  GP IX is  signing for Fund IX, as its general partner By Thomas R. Denison, Managing Director of First Reserve GP IX, Inc.</signatureName><signatureDate>2003-05-27</signatureDate></ownerSignature><ownerSignature><signatureName>Ben A. Guill By Thomas R. Denison, as attorney-in-fact (see previously filed power of attorney)</signatureName><signatureDate>2003-05-27</signatureDate></ownerSignature><ownerSignature><signatureName>Thomas J. Sikorski by Thomas R. Denison, as attorney-in-fact (see previously filed power of attorney)</signatureName><signatureDate>2003-05-27</signatureDate></ownerSignature></ownershipDocument>

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</SUBMISSION>
