Company lists · Data refreshed September 2026

Top 25 Construction testing services based in the United States

Name: Construction testing services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 576 companies tracked

RevenueBase identified 576 construction testing services headquartered in the United States as of September 2026 and tracks 29,213 professional contacts across them, including 12,520 with verified work emails. Houston is the largest hub.

This list covers construction testing services headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

576Companies

29,213Contacts tracked

12,520Verified emails

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The 25 largest construction testing services based in the United States

Ranked by team size

Top 25 of 576 construction testing services based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to construction testing services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	UL Solutions	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 16, 2026	10001+	12,316 contacts →
	Indirect evidence “A global leader in applied safety science, UL Solutions (NYSE: ULS) transforms safety, security and sustainability challenges into opportunities for customers in more than 110…” Source: RevenueBase Database · checked Sep 16, 2026
2	Nv5	Indirect evidence	Hollywood, FL, United StatesHQ checked Sep 16, 2026	1,001-5,000	2,230 contacts →
	Indirect evidence “NV5 is a provider of technology, conformity assessment, and consulting solutions for public and private sector clients supporting infrastructure, utility, and building assets and…” Source: RevenueBase Database · checked Sep 16, 2026
3	ATLAS	Partial evidence	Denver, CO, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,529 contacts →
	Partial evidence “Atlas Technical Consultants (Atlas) provides professional testing, inspection, engineering, environmental and consulting services nationwide.” Source: RevenueBase Database · checked Sep 16, 2026
4	Applied Technical Services, LLC	Partial evidence	Marietta, GA, United StatesHQ checked Sep 16, 2026	1,001-5,000	890 contacts →
	Partial evidence “Applied Technical Services assists commercial and industrial clients by providing inspection, testing, consulting engineering, and calibration services.” Source: RevenueBase Database · checked Sep 16, 2026
5	Professional Service Industries, Inc. PSI	Indirect evidence	Arlington Heights, IL, United StatesHQ checked Sep 16, 2026	1,001-5,000	778 contacts →
	Indirect evidence “Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Source: RevenueBase Database · checked Sep 16, 2026
6	TÜV Rheinland North America	Partial evidence	Boxborough, MA, United StatesHQ checked Sep 16, 2026	501-1,000	712 contacts →
	Partial evidence “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Source: RevenueBase Database · checked Sep 16, 2026
7	Socotec US	Indirect evidence	New York, NY, United StatesHQ checked Sep 16, 2026	1,001-5,000	492 contacts →
	Indirect evidence “Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Source: RevenueBase Database · checked Sep 16, 2026
8	FST Technical Services	Partial evidence	Chandler, AZ, United StatesHQ checked Sep 16, 2026	201-500	381 contacts →
	Partial evidence “Life Cycle Testing, Inspection, Certification & Engineering Solutions for Mission Critical Facilities Worldwide Commitment to Diversity – FST is dedicated to non-discriminatory…” Source: RevenueBase Database · checked Sep 16, 2026
9	Telgian	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 16, 2026	201-500	354 contacts →
	Indirect evidence “Since 1985, Telgian has served as a trusted partner to clients around the globe, providing innovative fire, security, life safety consulting and engineering/design services…” Source: RevenueBase Database · checked Sep 16, 2026
10	AET	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 16, 2026	201-500	353 contacts →
	Indirect evidence “Our mission at AET is to work together to build a more certain world.” Source: RevenueBase Database · checked Sep 16, 2026
11	Techcorr Usa, LLC	Indirect evidence	Pasadena, TX, United StatesHQ checked Sep 16, 2026	501-1,000	226 contacts →
	Indirect evidence “The TechCorr name is synonymous with safe, quality inspection services.” Source: RevenueBase Database · checked Sep 16, 2026
12	Pro-Surve Technical Services	Partial evidence	League City, TX, United StatesHQ checked Sep 16, 2026	201-500	213 contacts →
	Partial evidence “Pro-Surve Technical Services is an advanced non-destructive testing and inspection company.” Source: RevenueBase Database · checked Sep 16, 2026
13	Industrial Inspection & Analysis	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 16, 2026	501-1,000	210 contacts →
	Partial evidence “Industrial Inspection & Analysis® (IIA) is an emerging, high growth inspection, testing, and analytical business seeking to build a national platform in order to serve a breadth…” Source: RevenueBase Database · checked Sep 16, 2026
14	Leighton	Partial evidence	Irvine, CA, United StatesHQ checked Sep 16, 2026	51-200	190 contacts →
	Partial evidence “Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Source: RevenueBase Database · checked Sep 16, 2026
15	Twining, INC	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 16, 2026	201-500	178 contacts →
	Indirect evidence “Twining has continued to expand and evolve since its inception more than a century ago.” Source: RevenueBase Database · checked Sep 16, 2026
16	Building & Earth	Strong evidence	Birmingham, AL, United StatesHQ checked Sep 16, 2026	201-500	161 contacts →
	Strong evidence “Building & Earth is a professional engineering firm, specializing in geotechnical engineering, construction materials testing, special inspections per I.B.C./I.C.C.” Source: RevenueBase Database · checked Sep 16, 2026
17	Smith-Emery	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 16, 2026	201-500	150 contacts →
	Partial evidence “Smith-Emery has been providing inspection and materials testing services for public agencies and private companies for the past 113 years.” Source: RevenueBase Database · checked Sep 16, 2026
18	Qualspec	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 16, 2026	1,001-5,000	149 contacts →
	Indirect evidence “QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 16, 2026
19	Burgess Construction Consultants, INC	Partial evidence	Fairview, TX, United StatesHQ checked Sep 16, 2026	201-500	147 contacts →
	Partial evidence “Since 1986, Burgess Construction Consultants, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
20	JAN X-Ray Services, INC	Partial evidence	Parma, MI, United StatesHQ checked Sep 16, 2026	201-500	143 contacts →
	Partial evidence “JANX is a leader in nondestructive testing and inspection solutions with offices throughout the USA.” Source: RevenueBase Database · checked Sep 16, 2026
21	CGI Coastal Gulf & International	Partial evidence	Saint Rose, LA, United StatesHQ checked Sep 16, 2026	201-500	130 contacts →
	Partial evidence “Since 1978, Coastal Gulf & International, Inc.(CGI) has been a trusted leader in independent inspection, testing, and technical services for the energy, petrochemical, and marine…” Source: RevenueBase Database · checked Sep 16, 2026
22	Tierra, Inc. A Certerra Company	Strong evidence	Temple Terrace, FL, United StatesHQ checked Sep 16, 2026	51-200	118 contacts →
	Strong evidence “Established in 1992, Tierra, Inc.(Tierra) is a full-service consulting geotechnical, forensics, environmental, and construction materials testing engineering firm.” Source: RevenueBase Database · checked Sep 16, 2026
23	Aeis LLC	Partial evidence	South Plainfield, NJ, United StatesHQ checked Sep 16, 2026	201-500	116 contacts →
	Partial evidence “AEIS, LLC is a testing, inspection, and certification (TIC) agency that increases quality and safety outcomes for major infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
24	Certerra	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 16, 2026	1,001-5,000	114 contacts →
	Partial evidence “Certerra provides technology-enabled testing, inspection, and certification services for new product development, engineering solutions to manage assets, and quality assurance for…” Source: RevenueBase Database · checked Sep 16, 2026
25	Quality Built	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 16, 2026	201-500	102 contacts →
	Partial evidence “Quality Built, LLC began in in 1994, and for more than 20 years, we have been recognized as the nation's most innovative leader in the area of construction quality assurance and…” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: construction testing services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names construction testing services.
Partial evidence: Its own public description names part of construction testing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name construction testing services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 576 construction testing services based in the United States

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Construction testing services based in the United States at a glance

As of Sep 16, 2026

42.9%Verified-email coverage

50.7Average contacts per company

11-50Median size (employees)

5.9%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

254

11-50

196

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 576 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among construction testing services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “construction testing services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names construction testing services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among construction testing services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 12,520 across the full list. 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 September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Construction testing services by metro

Construction testing services in Houston34

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names construction testing services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many construction testing services are there based in the United States?

RevenueBase identified 576 construction testing services headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

UL Solutions, headquartered in Northbrook, tops this list with the largest team on record.

Which city has the most construction testing services?

Houston leads with 34 headquartered companies, followed by New York (17) and Miami (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 12,520 verified decision-maker contacts tracked across these 576 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 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 Smart Search, 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.