Where is Quanta Services headquartered?
In Houston, Texas, United States.
List of Quanta Services 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.
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.
| Company Name | Country | City | Address 1 | State/Province | Postal Code | Website | Founding Year | Yearly Revenue in U.S. Dollars | Employees Total | Business Legal Type - Description | Number of Companies in Group | Company 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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In Houston, Texas, United States.
About 612 across multiple countries.
Quanta Services is publicly traded; no single majority shareholder.
Yes. Quanta Services Inc. is incorporated in the United States.
Quanta employs approximately 37,000 people worldwide.
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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.
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.
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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.

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