Quanta Services · Corporate hierarchy

Quanta Services subsidiaries: 666 companies owned in 2026

Gain a deeper understanding of how Quanta Services is organized around the world. Founded in 1997, Quanta Services operates a network of 666 subsidiaries across 12 countries, with 578 in the United States (86.8%), 66 in Canada (9.9%), and 5 in the Netherlands (0.8%). Together these three countries account for 97.4% of the companies owned by Quanta Services.

LIVE DATA STREAM • 2026 Audit

Quanta Services

Company Hierarchy

Total Subsidiaries666
Countries12
Total Revenue (est)
Founded1997
CompanyLocationFoundedEmployeesRevenue (USD)Legal TypeCEOWebsiteCategory CodeCategory Description# in GroupLocal HQ NameLocal HQ CityLocal HQ CountryNational HQ NameNational HQ CityGlobal HQ NameGlobal HQ CityGlobal HQ Country
Enterprise

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Explore Quanta Services’s subsidiaries and corporate hierarchy

Quanta Services’s ownership network is one of more than 41 million corporate hierarchies in our company ownership database. It maps parent companies, subsidiaries and ultimate beneficial owners (UBO), showing how companies are structured and who owns whom, with verified data across 200 countries and jurisdictions. Explore how the dataset works and request a tailored sample.

Quanta Services Company Facts

01

Where is Quanta Services headquartered?

In Houston, Texas, United States.

02

How many subsidiaries does Quanta Services have?

About 666 across 12 countries.
03

Who owns Quanta Services?

Quanta Services is publicly traded; no single majority shareholder.

04

Is Quanta Services a US company?

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

05

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.

At CompanyData.com, we offer secure payment options for company data purchases, including credit cards, bank transfer, and PayPal. All payments are processed securely, and invoices are provided. For larger or ongoing data access, we also support subscription billing and custom invoicing. Need a special payment arrangement? Contact our sales team — we’re here to help.

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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Tell us your target group, and we’ll send you a free quote and a tailored company ownership dataset — sample included. Call +31 20 705 236 or email sales@companydata.com. Ready to order? Simply reply to the quote, and CompanyData.com delivers your dataset in CSV or Excel within 24 hours.

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