List of Quanta Services subsidiaries

Verified insights into Quanta Services’ global corporate structure and subsidiaries.

Quanta Services, Inc. is a leading infrastructure services company headquartered in Houston, United States. Established to meet the growing demand for energy, communication, and utility infrastructure, Quanta operates a wide-reaching corporate structure with a network of 612 subsidiaries worldwide. This ownership information comes from CompanyData.com’s reliable corporate hierarchy database, featuring data on over 380 million companies globally.

Distribution of Quanta Services subsidiaries across regions

Quanta Services has 612 subsidiaries spread throughout 16 countries, with the majority located in the United States (514 subsidiaries, 84%), followed by Canada (61 subsidiaries, 10%), and Australia (19 subsidiaries, 3%). These key regions highlight Quanta’s focus on infrastructure services across energy, telecom, and related sectors worldwide.

Elite Construction Of Ocala, LLCElite Construction Of Ocala, LLC
Showing 26 of 651 companies
Company NameCountryCityAddress 1State/ProvincePostal CodeWebsiteFounding YearYearly Revenue in U.S. DollarsEmployees TotalBusiness Legal Type - DescriptionNumber of Companies in GroupCompany Registration Number
1
Elite Construction Of Ocala, LLC
USA
Ocala
2240 N Pine Ave
Marion
34475
eliteofocala.*****
2021
$15,222,615
351
Corporation
651
P99000012301
2
Grid Training CORPORATION
USA
Meridian
7600 S Meridian Rd
Ada
83642
lineman.*****
2018
$21,897,794
211
Corporation
651
00315121
3
Summit Line Construction, INC.
USA
Heber
441 W Powerline Rd
Wasatch
84032
summitlineconstruction.*****
2009
$74,003,827
190
Corporation
651
N/A
4
Elite Construction Of Ocala, LLC
USA
Kissimmee
5258 Giron Cir
Osceola
34758
eliteofocala.*****
N/A
0
163
651
N/A
5
Par Electrical Contractors, LLC
USA
North Las Vegas
3940 E Craig Rd Ste 101
Clark
89030
parelectric.*****
N/A
0
100
651
N/A
6
Pennsylvania Transformer Technology, LLC
USA
Raeford
201 Carolina Dr
Hoke
28376
patransformer.*****
N/A
0
65
651
N/A
7
Hbk Engineering, LLC
USA
West Norriton
2490 General Armistead Ave Ste 102
Montgomery
19403
hbkengineering.*****
N/A
0
61
651
N/A
8
The Delphi Groupe LLC
USA
Austin
11501 Burnet Rd Bldg 906
Travis
78758
delphigroupe.*****
1987
$2,062,063
58
Corporation
651
0106549900
9
Dashiell CORPORATION
USA
Deer Park
1300 Underwood Rd
Harris
77536
dashiell.*****
N/A
0
55
651
N/A
10
Mussop INC
USA
Pine Bluff
5 Portea Dr
Jefferson
71601
mussop.*****
N/A
0
37
651
N/A
11
Energy Services West, LLC
USA
Spokane Valley
4308 N Barker Rd
Spokane
99027
es-west.*****
2016
$2,455,334
36
Corporation
651
5974670
12
The Ryan Company INC
USA
Houston
2800 Post Oak Blvd Ste 4200
Harris
77056
ryancompany.*****
N/A
0
32
651
N/A
13
Safety Test & Equipment Company, INC.
USA
Shelby
107 Cherryville Rd
Cleveland
28150
safetytest.*****
1959
$2,156,645
30
Corporation
651
0188033
14
Mts Quanta, LLC
USA
Overland Park
10551 Barkley St Ste 200
Johnson
66212
mtsquanta.*****
2015
$929,363
30
Corporation
651
N/A
15
Quanta Services, INC.
USA
Johnston
123 King Philip St
Providence
02919
N/A
N/A
0
23
651
N/A
16
Par Electrical Contractors, INC.
USA
Peotone
631 E Walnut St
Will
60468
parelectric.*****
N/A
0
23
651
N/A
17
Brink Constructors, INC.
USA
North Las Vegas
35 W Mayflower Ave
Clark
89030
brinkred.*****
N/A
0
20
651
N/A
18
North American Industrial Services, INC.
USA
Wisconsin Rapids
6511 State Highway 13 S
Wood
54494
enais.*****
N/A
0
18
651
N/A
19
H.L. Chapman Pipeline Construction, INC.
USA
Leander
9250 Fm 2243
Williamson
78641
hlchapman.*****
1999
$15,733,485
15
Corporation
651
0034509500
20
Specialty Tank Services, LTD.
USA
La Porte
2225 Sens Rd
Harris
77571
tankspecialists.*****
2010
$9,371,118
12
Partnership of unknown type
651
0800841436
21
Gem Mobile Treatment Services, INC.
USA
Benicia
3915 Teal Ct
Solano
94510
enais.*****
N/A
0
10
651
N/A
22
Stronghold Specialty, LTD.
USA
La Porte
225 S 16th St
Harris
77571
catspec.*****
2017
$768,431
9
Partnership of unknown type
651
N/A
23
Southwest Trenching Company INC
USA
Houston
1608 Margaret St
Harris
77093
nhplc.*****
2011
$2,674,185
8
Corporation
651
0070673300
24
Mears Group, INC.
USA
Houston
920 Memorial City Way Ste 650
Harris
77024
N/A
N/A
0
7
651
N/A
25
Hargrave Power, INC.
USA
Grand Prairie
3340 Roy Orr Blvd Ste 203
Dallas
75050
hargravepower.*****
1999
$5,314,153
6
Corporation
651
N/A
26
North American Industrial Services, INC.
USA
Rock Springs
90 Reliance Rd
Sweetwater
82901
naisinc.*****
N/A
0
6
651
N/A

Showing 26 of 651 companies

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Explore Global Corporate Structures in Detail

Quanta Services’ ownership network is part of more than 41 million corporate hierarchies mapped in our company ownership database. It reveals how companies are structured and connected, showing parent entities and subsidiaries with verified data from groups across 200 countries and jurisdictions. Discover how our dataset works — and request a custom sample to see the details.

Quanta Services Company Facts

Where is Quanta Services headquartered?

In Houston, Texas, United States.

How many subsidiaries does Quanta Services have?

About 612 across multiple countries.

Who owns Quanta Services?

Quanta Services is publicly traded; no single majority shareholder.

Is Quanta Services a US company?

Yes. Quanta Services Inc. is incorporated in the United States.

How many employees work for Quanta Services?

Quanta employs approximately 37,000 people worldwide.

Corporate family tree

Why Understanding Quanta Services Ownership is Important

Knowing who owns what helps you understand how companies operate and connect. Our corporate hierarchy data lets you follow the links between parent companies, subsidiaries, and shareholders, showing control, structure, and risks within any global group. Whether you’re reviewing Quanta Services or another multinational, this insight supports compliance reviews, business research, and better data management. With verified ownership details on over 380 million companies worldwide, CompanyData.com provides a clear view of ownership across industries and borders.

How We Define Global, National, and Local Headquarters for Quanta Services

At CompanyData.com, we map company structures like that of Quanta Services using a three-level hierarchy: Global, National, and Local headquarters. This system helps reveal the role of each part within the company family.

Our three levels explained

  • Global Headquarter — The global headquarter oversees the whole group. For Quanta Services, this is the international corporate office in Houston, USA, at the top of the ownership chain.
  • National Headquarters — These are country-level entities that manage local operations and report to the global parent. For example, Quanta Canada Ltd. handles Canadian operations, while other units cover Australia and other countries.
  • Local Headquarters — Regional or city-level subsidiaries manage day-to-day business, project execution, and local compliance within their markets.

Each company is given a unique ID so you can connect subsidiaries to parents, trace ownership lines, and easily use the data in your systems.

How control is determined

We define control mainly by ownership share. When a company owns over 50% of another, it’s treated as a controlled subsidiary. Our focus on majority control relationships helps paint a clear picture of corporate hierarchies. This approach accurately maps complex ownership like Quanta Services’ and can be used for any multinational.

Why this matters for your business

Understanding this structure helps identify decision-makers within the Quanta Services Group, eases compliance checks, and supports mergers, acquisitions, or risk assessments. Using verified ownership data from CompanyData.com, users get transparent insight into how Quanta Services and similar global companies are organized. With data covering more than 612 companies linked in 12 countries including the USA [US], Canada [CA], Australia [AU], and others, our database offers clarity and confidence when working with international corporate networks.

 

How We Define Global, National, and Local Headquarters for Quanta Services

Quanta Services Global Corporate Structure

CompanyData.com provides trusted data for companies seeking clear insights into the global ownership and subsidiary structures of major corporations like Quanta Services. Our data supports compliance, market research, and strategic planning with accurate and up-to-date company details. You can request free data samples or larger tailored datasets crafted for your business needs. For contact or lead generation lists, please see our Company Data Platform.

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Quanta Services ownership & subsidiary data – FAQs

You can access Quanta Services company data through API, bulk files, or the Bold Platform. We create custom datasets based on your target countries, industries, and company profiles. After you share your criteria, our experts prepare a tailored dataset and send a free quote with record counts and sample data within 24 hours. Once approved, we deliver your data quickly in your preferred format — via Excel, API, bulk file, or directly in the Bold Platform.

If you need company data beyond Quanta Services or from different industries, CompanyData.com offers full global coverage. You’ll receive accurate, verified business information across every country and sector. Simply tell us your needs, and our experts will prepare a custom dataset tailored to your goals. Within 24 hours, you’ll get a free quote, record count, and sample data. Once approved, we deliver your data fast — via Excel, API, bulk file, or on the Bold Platform.

The price for our Quanta Services company data depends on the details and delivery method you choose. Whether you want a list of subsidiaries or a full dataset via API or bulk files, we offer flexible pricing to meet your needs. You can request a free quote and record count within 24 hours. Our team provides transparent pricing and a free sample of 10 company contacts. At CompanyData.com, you only pay for verified global data you require.

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At CompanyData.com, you can find detailed, verified data on Quanta Services, Inc. and all its subsidiaries, updated daily. This data includes company names, registration details, locations, industry classifications, financial metrics, and key contacts. Access and download the data via the Bold Platform, API, or bulk file delivery. Our database offers 100% worldwide company coverage ensuring complete and accurate insights.

CompanyData.com collects data from verified global business sources to ensure accuracy and comprehensive coverage. Our sources include official business registers, financial filings, LEI records, trusted partners, and verified company websites. Data is cross-checked and validated by specialists to guarantee it is accurate, current, and GDPR-compliant.

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