<SEC-DOCUMENT>0001193125-17-359002-index.html : 20171201
<SEC-HEADER>0001193125-17-359002.hdr.sgml : 20171201
<ACCEPTANCE-DATETIME>20171201164507
ACCESSION NUMBER:		0001193125-17-359002
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		6
FILED AS OF DATE:		20171201
DATE AS OF CHANGE:		20171201
EFFECTIVENESS DATE:		20171201

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QUANTA SERVICES INC
		CENTRAL INDEX KEY:			0001050915
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRICAL WORK [1731]
		IRS NUMBER:				742851603
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-221869
		FILM NUMBER:		171234653

	BUSINESS ADDRESS:	
		STREET 1:		2800 POST OAK BLVD
		STREET 2:		SUITE 2600
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056-6175
		BUSINESS PHONE:		713-629-7600

	MAIL ADDRESS:	
		STREET 1:		2800 POST OAK BLVD SUITE 2600
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056-6175
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3ASR
<SEQUENCE>1
<FILENAME>d492808ds3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: d492808ds3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d492808dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d492808dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>d492808dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: d492808dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g492808g12a14.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g492808g12a14.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g492808g42g48.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g492808g42g48.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g492808g87x62.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g492808g87x62.jpg

</DOCUMENT>
</SEC-DOCUMENT>