Company lists · Data refreshed October 2026

Top 25 Building services companies based in Houston, United States

Name: Building services companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 150 companies tracked

RevenueBase identified 150 company matches for building services companies associated with Houston, United States as of October 2026 and tracks 3,531 professional contacts across them, including 1,287 with verified work emails. Across the United States, New York is the largest hub for this category (214 companies); Houston follows with 150.

This list covers company matches for building services companies associated with Houston, United States, 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 9, 2026.

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 9, 2026 How this list was built

150Companies

3,531Contacts tracked

1,287Verified emails

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The 25 largest building services companies based in Houston, United States

Ranked by team size

Top 25 of 150 company matches for building services companies based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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	Comfort Systems USA	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	10001+	1,354 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Camp Facility Services	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	285 contacts →
	Exact match “CAMP Facility Services has been a trusted leader in the facility and construction management industry since 1978.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Mclemore Building Maintenance, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	501-1,000	176 contacts →
	Exact match “McLemore Building Maintenance was founded in 1970 and thanks to the dedication of our team who earn our clients’ business each and every day.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Abacus Plumbing, AIR Conditioning & Electrical	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	136 contacts →
	Exact match “We offer superior plumbing, air conditioning, and electrical services to Residential and Commercial clients in Houston,TX.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Letsos Company	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	126 contacts →
	Exact match “In 1953, James N.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	APS Building Services	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	91 contacts →
	Exact match “APS is dedicated to building partnerships that enhance the comfort and productivity of our clients and their teams in the workplace.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Gray Mechanical Contractors, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	89 contacts →
	Exact match “Gray Mechanical Contractors is a licensed HVAC and Plumbing contractor providing construction services for General Contractors and building owners throughout Texas.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Metroclean	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	1,001-5,000	79 contacts →
	Exact match “Metroclean is a facility management services provider committed to bringing peace of mind to customers through quality work.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	Raven Mechanical, LP	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	75 contacts →
	Exact match “Raven Mechanical, founded 1979, is a full service mechanical contractor specializing in Plumbing and HVAC service and construction.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	DTK Janitorial & Landscaping	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	1,001-5,000	72 contacts →
	Exact match “Founded in 1996, DTK is a Texas-based facility services company dedicated to enhancing facilities and lives.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Aztec Facility Services	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	501-1,000	72 contacts →
	Exact match “Aztec Facility Services is your Facility Management Solutions!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Ambassador Services, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	501-1,000	61 contacts →
	Exact match “Ambassador Services has decades of experience in providing reliable facility maintenance and grounds services designed to bring you peace of mind.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	CFI Mechanical, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	60 contacts →
	Exact match “CFI Mechanical was founded in Sugar Land, Texas in April 1996.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Har-Con Mechanical	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	50 contacts →
	Exact match “Founded in 1955, HAR-CON is a full service mechanical contractor well versed in Plumbing and HVAC.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Infinity Systems, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	34 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Lighthouse Environmental Services, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	30 contacts →
	Exact match “Lighthouse Environmental Services, Inc is an innovative service provider that continually offers the highest quality personnel and specialized equipment.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Rice-Brothers	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	28 contacts →
	Exact match “Rice-Brothers \| Industrial & Commercial Construction At Rice-Brothers we specialize in delivering high-performance solutions for industrial and commercial clients.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Direct Service, Construction & Design	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	27 contacts →
	Exact match “Direct Service, Construction & Design provides turnkey mechanical (HVAC), electrical, plumbing (MEP) and general building solutions by way of service, construction and design.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	CSNA	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	25 contacts →
	Exact match “Founded in 2012, Consolidated Services of North America (CSNA) has developed into one of the fastest growing facility service companies in the Gulf Coast Region.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	bldg.works	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	1,001-5,000	23 contacts →
	Exact match “We are more than just another bldg maintenance or janitorial services contractor.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Rice & Gardner	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	19 contacts →
	Exact match “At Rice & Gardner Consultants, Inc.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	CS Mechanical CO	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	17 contacts →
	Exact match “Looking for reliable commercial HVAC, plumbing, and electrical services in Texas?” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Maintenance Of Houston, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	201-500	17 contacts →
	Exact match “For over forty years, Maintenance of Houston, Inc.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Cook Mechanical, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	51-200	14 contacts →
	Exact match “Cook Mechanical is a HVAC contractor serving the greater Houston area.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	STAOC	Exact match	Houston, TX, United StatesHQ recorded Oct 9, 2026	11-50	14 contacts →
	Exact match “STAOC is built on a foundation of integrity and team work to help get any job done efficiently and correctly the first time.” Recorded in the RevenueBase company graph · Oct 9, 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 “building services companies”. 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 150 building services companies based in Houston, United States

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Building services companies based in Houston, United States at a glance

As of Oct 9, 2026

36.4%Verified-email coverage

23.5Average contacts per company

11-50Median size (employees)

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 150 companies.

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.
What qualifies: Company records associated with Houston, United States whose business descriptions match “building services companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,287 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 9, 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.

Building services companies by metro in the United States

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 “building services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building services companies are there based in Houston, United States?

RevenueBase identified 150 company matches for building services companies associated with Houston, United States 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?

Comfort Systems USA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most building services companies?

New York leads the United States with 214 company records, followed by Houston (150) and Atlanta (86).

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 1,287 professional contacts with verified work emails tracked across these 150 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 9, 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.