Exhibit 21.1
QUANTA SERVICES, INC. — SUBSIDIARIES LIST
The following is a list of the significant subsidiaries of Quanta Services, Inc. showing the place of incorporation or organization and the names under which each subsidiary does business. The names of certain subsidiaries are omitted as such subsidiaries, considered as a single subsidiary, would not constitute a significant subsidiary.
     
Subsidiary/Doing Business As   State of Incorporation/Organization
Advanced Technologies and Installation Corporation
  Washington
Telecom Network Specialist
   
Allteck Line Contractors (USA), Inc.
  Washington
Allteck Line Contractors, Inc.
  British Columbia
Arby Construction, Inc.
  Delaware
Austin Trencher, Inc.
  Delaware
Bradford Brothers, Inc.
  North Carolina
CCLC, Inc.
  Delaware
CMI Services, Inc.
  Florida
Conti Communications, Inc.
  Delaware
DE Conti Communications, Inc.
   
Croce Electric Company, Inc.
  Delaware
Digco Utility Construction, L.P.
  Texas
Brown Engineering
   
Ranger Field Services
   
Dillard Smith Construction Company
  Delaware
Driftwood Electrical Contractors, Inc.
  Delaware
Maddux Communications
   
Environmental Professional Associates, Limited
  California
Provco
   
Fiber Technologies, Inc.
  Virginia
Myers Cable, Inc.
   
World Fiber
   
Five Points Construction Co.
  Texas
Global Enercom Management, Inc.
  Delaware
Golden State Utility Co.
  Delaware
H.L. Chapman Pipeline Construction, Inc.
  Delaware
DB Utilities
   
Sullivan Welding
   
Intermountain Electric, Inc.
  Colorado
Colorado IM Electric
   
Grand Electric
   
Irby Construction Company
  Mississippi
Lindsey Electric, L.P.
  Texas
Manuel Bros., Inc.
  Delaware
Renaissance Construction
   
Western Directional
   
Mears Canada Corp.
  Nova Scotia
Mears Engineering/LLC
  Michigan
Mears Group, Inc.
  Delaware
Mears Services LLC
  Michigan
Mears/CPG LLC
  Michigan
Mears/HDD LLC
  Michigan
Mearsmex S. de R.L. de C.V.
  Mexico
Mejia Personnel Services, Inc.
  Texas
Metro Underground Services, Inc. of Illinois
  Illinois
Network Electric Company
  Delaware
DE Network Electric Company
   
North Houston Pole Line, L.P.
  Delaware
North Houston Pole Line Corp.
   
North Sky Communications, Inc.
  Delaware
Sky Communications
   
Okay Construction Company, LLC
  Delaware
PAR Electrical Contractors, Inc.
  Missouri

 


 

     
Subsidiary/Doing Business As   State of Incorporation/Organization
Par Infrared Consultants
   
Riggin & Diggin Line Construction
   
Par Internacional, S. de R.L. de C.V.
  Mexico
Parkside Site & Utility Company Corporation
  Delaware
Parkside Utility Construction Corp.
  Delaware
Potelco, Inc.
  Washington
Kingston Constructors DBA Talking Sign
   
Services
   
Kuenzi Constructors
   
Potelco Incorporated
   
Professional Teleconcepts, Inc.
  Illinois
JT Communications
   
Professional Teleconcepts, Inc.
  New York
PWR Financial Company
  Delaware
PWR Network, LLC
  Delaware
QDE LLC
  Delaware
QPC, Inc.
  Delaware
QSI, Inc.
  Delaware
Quanta Asset Management LLC
  Delaware
Quanta Associates, L.P.
  Texas
Quanta Delaware, Inc.
  Delaware
Quanta Government Services, Inc.
  Delaware
Quanta Government Solutions, Inc.
  Delaware
Quanta International Limited
  British Virgin Islands
Quanta Receivables, L.P.
  Delaware
Quanta Services Contracting, Inc.
  Delaware
Quanta Services Management Partnership, L.P.
  Texas
Quanta Services of Canada Ltd.
  British Columbia
Quanta Underground Services, Inc.
  Delaware
Quanta Utility Installation Co., Inc.
  Delaware
Quanta Utility Services, LLC
  Delaware
Quanta Utility Services – Gulf States, Inc.
  Delaware
Quanta Wireless Solutions, Inc.
  Delaware
R.A. Waffensmith & Co., Inc.
  Delaware
S.K.S. Pipeliners, LLC
  Delaware
Servicios Par Electric, S. de R.L. de C.V.
  Mexico
Southwest Trenching Company, Inc.
  Texas
Spalj Construction Company
  Delaware
Delaware Spalj Construction Company
   
Smith Contracting
   
Span-Con of Deerwood
   
Tjader & Highstrom
   
Throstad Brother Tiling
   
Wilson Roadbores
   
Sumter Utilities, Inc.
  Delaware
Sumter Builders Construction Contracting
   
The Ryan Company, Inc.
  Massachusetts
Eastern Communications
   
The Ryan Company Inc. of Massachusetts
   
The Ryan Company of Massachusetts
   
The Ryan Company Incorporated of
   
Massachusetts
   
The Ryan Company, Incorporated Electrical
   
Contractors
   
Ryan Company Inc. (The)
   
Tjader, L.L.C.
  Delaware
TNS-VA, LLC
  Delaware
Tom Allen Construction Company
  Delaware
TA Construction
   
Total Quality Management Services, LLC
  Delaware
Trans Tech Electric, L.P.
  Texas

 


 

     
Subsidiary/Doing Business As   State of Incorporation/Organization
Trans Tech Electric, Limited Partnership
   
Trawick Construction Co.
  Florida
TTGP, Inc.
  Delaware
TTLP, Inc.
  Delaware
TTM, Inc.
  North Carolina
Underground Construction Co., Inc.
  Delaware
Delaware Underground Construction Co.
   
Maryland Underground Construction Co., Inc.
   
Underground Construction Co., Inc. (Delaware)
   
Utility Line Management Services, Inc.
  Delaware
VCI Telcom, Inc.
  Delaware
W.C. Communications, Inc.
  Delaware
West Coast Communications