Company lists · Data refreshed October 2026

Top 25 Office building electrical contractors worldwide

Name: Office building electrical contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 19, 2026 37,789 companies tracked

RevenueBase identified 37,789 company matches for office building electrical contractors worldwide as of October 2026 and tracks 311,846 professional contacts across them, including 74,408 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for office building electrical contractors worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 19, 2026. Country and city lists for office building electrical contractors follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 19, 2026 How this list was built

37,789Companies

311,846Contacts tracked

74,408Verified emails

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The 25 largest office building electrical contractors worldwide

Ranked by team size

Top 25 of 37,789 company matches for office building electrical contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	IES Holdings	Exact match	Houston, TX, United StatesHQ recorded Oct 19, 2026	5,001-10,000	2,661 contacts →
	Exact match “IES Holdings, Inc.(formerly known as Integrated Electrical Services, Inc.) provides electrical contracting services to commercial, industrial, and residential customers in the…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2	Helix Electric	Exact match	San Diego, CA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,618 contacts →
	Exact match “Helix Electric is an award-winning electrical contractor specializing in design-build and highly complex electrical projects throughout the United States.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Oct 19, 2026	1,001-5,000	1,585 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Oct 19, 2026	10001+	1,443 contacts →
	Exact match “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 19, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6	Bravida Danmark A S	Exact match	Brøndby, DenmarkHQ recorded Oct 19, 2026	1,001-5,000	1,342 contacts →
	Exact match “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7	Facility Solutions Group	Exact match	Austin, TX, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,294 contacts →
	Exact match “Big jobs, complex systems, tight timelines.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8	MJ Quinn	Exact match	Prescot, United KingdomHQ recorded Oct 19, 2026	1,001-5,000	1,287 contacts →
	Exact match “At MJ Quinn we believe in creating great connections, with our customers, our people and our world.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9	Bergelectric	Exact match	Carlsbad, CA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,210 contacts →
	Exact match “Since their inception in 1946, Bergelectric has made its mark on the construction industry by providing the highest quality electrical and technology contracting.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10	Walker Engineering	Exact match	Irving, TX, United StatesHQ recorded Oct 19, 2026	1,001-5,000	1,124 contacts →
	Exact match “Walker Engineering has a solid reputation in the industry that is based on over 45 years of delivering top notch electrical work for a fair and competitive price.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11	Bravida Norge AS	Exact match	Oslo, NorwayHQ recorded Oct 19, 2026	1,001-5,000	898 contacts →
	Exact match “Bravida gir bygninger liv.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12	Archkey Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Oct 19, 2026	1,001-5,000	880 contacts →
	Exact match “ArchKey, one of the largest privately held specialty trade installation and facilities services companies in the United States, is a leader in designing, building, and maintaining…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13	Elec-Tech Electrical Contractors	Exact match	Long Beach, CA, United StatesHQ recorded Oct 19, 2026	n/a	778 contacts →
	Exact match “WELCOME TO OUR WEBSITE!” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14	Linc Facility Services	Exact match	United StatesHQ recorded Oct 19, 2026	1,001-5,000	740 contacts →
	Exact match “The Linc Group is an award-winning provider of integrated facilities management, HVAC and building systems services, lighting and electrical solutions, and other support services…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15	Prism Electric	Exact match	Garland, TX, United StatesHQ recorded Oct 19, 2026	1,001-5,000	717 contacts →
	Exact match “Our story began in 1994 with a simple vision: Build a company that does things right.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16	Prime Electric	Exact match	Bellevue, WA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	710 contacts →
	Exact match “For over a quarter century, Prime has been successfully engineering, constructing building, and facilities solutions for our clientele.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17	Cache Valley Electric	Exact match	Logan, UT, United StatesHQ recorded Oct 19, 2026	1,001-5,000	662 contacts →
	Exact match “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18	HOULE	Exact match	Burnaby, BC, CanadaHQ recorded Oct 19, 2026	501-1,000	654 contacts →
	Exact match “At Houle, we are passionate about bringing communities to life.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19	Temon Serviços	Exact match	São Paulo, BrazilHQ recorded Oct 19, 2026	1,001-5,000	650 contacts →
	Exact match “A Temon Serviços é a empresa líder na engenharia de manutenção e operação de sistemas prediais de alta complexidade.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20	Temon Técnica DE Montagens E Construções	Exact match	Sao Paulo, BrazilHQ recorded Oct 19, 2026	1,001-5,000	646 contacts →
	Exact match “Desde 1978 atuando na execução de Instalações Elétricas e Hidráulicas, a Temon conseguiu firmar sua marca nesse mercado com participação em mais de obras por todo Brasil e…” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21	Rogers Electric	Exact match	Alpharetta, GA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	630 contacts →
	Exact match “Rogers Electric is the leading national service provider for all of your construction, rollouts, electrical, and lighting needs.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22	Alterman, INC	Exact match	Live Oak, TX, United StatesHQ recorded Oct 19, 2026	501-1,000	615 contacts →
	Exact match “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23	Resa Power	Exact match	Houston, TX, United StatesHQ recorded Oct 19, 2026	1,001-5,000	590 contacts →
	Exact match “RESA Power is your ONE-STOP for all of your power needs.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24	CSI Electrical Contractors, INC	Exact match	Santa Fe Springs, CA, United StatesHQ recorded Oct 19, 2026	1,001-5,000	585 contacts →
	Exact match “Founded in 1990, CSI has become a leader in highly technical and innovative electrical design and construction.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25	Est, S.A	Exact match	Leiria, PortugalHQ recorded Oct 19, 2026	51-200	573 contacts →
	Exact match “EST - Empresa Serviços Técnicos, S.A.” Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “office building electrical contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 37,789 office building electrical contractors worldwide

See the full list, filter by size, metro and specialty, and access 74,408 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Office building electrical contractors worldwide at a glance

As of Oct 19, 2026

23.9%Verified-email coverage

8.3Average contacts per company

1-10Median size (employees)

0.8%Largest-city concentration · London

Oct 19, 2026Page data refreshed

Companies by employee count

1-10

19,063

11-50

13,152

51-200

3,942

201-500

691

501-1,000

195

1,001-5,000

127

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for office building electrical contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “office building electrical contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 74,408 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Office building electrical contractors by location

98 lists · largest first

Every Office building electrical contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “office building electrical contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many office building electrical contractors are there worldwide?

RevenueBase identified 37,789 company matches for office building electrical contractors worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

IES Holdings tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most office building electrical contractors?

The United States leads with 9,220 companies, followed by the United Kingdom (4,026) and Italy (2,155). Every office building electrical contractors list by country and city is linked on this page.

Which city has the most office building electrical contractors?

London leads with 300 company records, followed by Sao Paulo (210) and Houston (146).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 74,408 professional contacts with verified work emails tracked across these 37,789 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.