Company lists · Data refreshed October 2026

Top 25 Construction site investigation firms worldwide

Name: Construction site investigation firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 8,230 companies tracked

RevenueBase identified 8,230 company matches for construction site investigation firms worldwide as of October 2026 and tracks 130,032 professional contacts across them, including 36,225 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for construction site investigation firms 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 10, 2026. Country and city lists for construction site investigation firms 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 10, 2026 How this list was built

8,230Companies

130,032Contacts tracked

36,225Verified emails

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The 25 largest construction site investigation firms worldwide

Ranked by team size

Top 25 of 8,230 company matches for construction site investigation firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	Terracon	Exact match	Olathe, KS, United StatesHQ recorded Oct 10, 2026	5,001-10,000	6,380 contacts →
	Exact match “Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	Keller	Exact match	London, United KingdomHQ recorded Oct 10, 2026	5,001-10,000	4,148 contacts →
	Exact match “Every day, people around the world live, work and play on ground prepared by Keller, the world's largest geotechnical specialist contractor.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	ECS Group Of Companies	Exact match	Chantilly, VA, United StatesHQ recorded Oct 10, 2026	1,001-5,000	2,259 contacts →
	Exact match “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	SEP Engineers	Exact match	Skelmersdale, United KingdomHQ recorded Oct 10, 2026	n/a	1,845 contacts →
	Exact match “Established in 1986, SEP has been the industry’s leader for site engineering, surveying and management solutions for over thirty years, providing vital services, resources and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	UES	Exact match	Orlando, FL, United StatesHQ recorded Oct 10, 2026	1,001-5,000	1,643 contacts →
	Exact match “UES provides professional engineering, environmental, testing and inspection services to clients across the United States.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Arab Center For Engineering Studies	Exact match	Amman, JordanHQ recorded Oct 10, 2026	1,001-5,000	1,486 contacts →
	Exact match “At ACES, we offer a wide range of specialized engineering services including site and geotechnical investigation, materials technology and testing, quality control of projects…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	GZA Geoenvironmental, INC	Exact match	Norwood, MA, United StatesHQ recorded Oct 10, 2026	501-1,000	903 contacts →
	Exact match “Founded in 1964 as a soils and foundations specialty consultant, GZA GeoEnvironmental, Inc.(GZA) has grown into a full-service company providing its clients with highly…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Professional Service Industries, Inc. PSI	Exact match	Arlington Heights, IL, United StatesHQ recorded Oct 10, 2026	1,001-5,000	776 contacts →
	Exact match “Intertek, a leading provider of quality solutions to industries around the world, has completed the acquisition of Professional Service Industries, Inc.(PSI), a leading…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Trevi S.P.A	Exact match	Cesena, ItalyHQ recorded Oct 10, 2026	201-500	671 contacts →
	Exact match “Trevi, a company specialized in special foundations and soil consolidation, is part of the Trevi Group, a world leader in subsoil engineering and in the design and production of…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Sondotécnica Engenharia	Exact match	Rio De Janeiro, BrazilHQ recorded Oct 10, 2026	201-500	667 contacts →
	Exact match “Sondotécnica was founded in 1954.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	Raba Kistner, INC	Exact match	San Antonio, TX, United StatesHQ recorded Oct 10, 2026	501-1,000	602 contacts →
	Exact match “Founded in 1968, Raba Kistner Inc.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	Tower Engineering Professionals	Exact match	Raleigh, NC, United StatesHQ recorded Oct 10, 2026	1,001-5,000	541 contacts →
	Exact match “Tower Engineer Professionals was founded in 1997 by two tower-climbing engineers.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Socotec US	Exact match	New York, NY, United StatesHQ recorded Oct 10, 2026	1,001-5,000	525 contacts →
	Exact match “Welcome to SOCOTEC in the US, Trusted Expertise, From the Ground Up.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Nova Engineering And Environmental, LLC	Exact match	Kennesaw, GA, United StatesHQ recorded Oct 10, 2026	501-1,000	518 contacts →
	Exact match “Established in 1996, NOVA was originally founded to provide Environmental Consulting, Geotechnical Engineering, and Construction Materials Testing and Inspection services to the…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Geo-Technology Associates, Inc. GTA	Exact match	Abingdon, MD, United KingdomHQ recorded Oct 10, 2026	501-1,000	492 contacts →
	Exact match “Geo-Technology Associates, Inc.(GTA) proudly celebrates more than 40 years of service, backed by a team of 600+ professionals-including geotechnical engineers, environmental…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Entact, LLC	Exact match	Westmont, IL, United StatesHQ recorded Oct 10, 2026	501-1,000	491 contacts →
	Exact match “ENTACT is the partner of choice in solving our customer's most complex environmental remediation and geotechnical infrastructure challenges.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	Douglas Partners	Exact match	West Ryde, AustraliaHQ recorded Oct 10, 2026	501-1,000	484 contacts →
	Exact match “Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Groupe Géotec	Exact match	Quetigny, FranceHQ recorded Oct 10, 2026	501-1,000	483 contacts →
	Exact match “Groupe Géotec, bureau d’études en ingénierie géotechnique et environnementale, créé en 1973, conseille l’ensemble des interlocuteurs de l’acte de construire : maîtres d’ouvrage…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	GEO	Exact match	Kgs. Lyngby (copenhagen), DenmarkHQ recorded Oct 10, 2026	201-500	483 contacts →
	Exact match “Founded in 1943, Geo is a market leading engineering consultancy company and contractor, specialised within the fields of geotechnical and environmental engineering (geoteknik og…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Thurber Engineering LTD	Exact match	Edmonton, AB, CanadaHQ recorded Oct 10, 2026	501-1,000	476 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	Groupe ABS	Exact match	Montréal, QC, CanadaHQ recorded Oct 10, 2026	501-1,000	453 contacts →
	Exact match “Fondé en 1993 et établi dans onze régions du Québec et en Ontario.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Construction Sciences	Exact match	Albion, AustraliaHQ recorded Oct 10, 2026	1,001-5,000	448 contacts →
	Exact match “Construction Sciences is a construction materials testing, geotechnical engineering, environmental consulting and specialised testing firm.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	L&t Geostructure	Exact match	Chennai, IndiaHQ recorded Oct 10, 2026	501-1,000	444 contacts →
	Exact match “Overview In 2012, L&T acquired a huge fleet of sophisticated foundation equipment and L&T GeoStructure - a unique legal business entity, was formed to focus, capture and build…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	Chammas Engenharia	Exact match	Belo Horizonte, BrazilHQ recorded Oct 10, 2026	201-500	433 contacts →
	Exact match “A Chammas acredita que a engenharia aplicada com rigor e seriedade contribui para um mundo mais seguro e sustentável; Desenvolvemos soluções eficazes, combinando expertise humana…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	Progeo Engenharia Ltda	Exact match	Belo Horizonte, BrazilHQ recorded Oct 10, 2026	501-1,000	405 contacts →
	Exact match “Fundada em 1981, a empresa é focada na execução de serviços especiais de geologia, engenharia geotécnica e recuperação de estruturas.” Recorded in the RevenueBase company graph · Oct 10, 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 “construction site investigation firms”. 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 8,230 construction site investigation firms worldwide

See the full list, filter by size, metro and specialty, and access 36,225 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Construction site investigation firms worldwide at a glance

As of Oct 10, 2026

27.9%Verified-email coverage

15.8Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

4,469

11-50

2,608

51-200

852

201-500

172

501-1,000

1,001-5,000

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 construction site investigation firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “construction site investigation firms” 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 36,225 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 10, 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.

Construction site investigation firms by location

34 lists · largest first

Every Construction site investigation firms 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 “construction site investigation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many construction site investigation firms are there worldwide?

RevenueBase identified 8,230 company matches for construction site investigation firms 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?

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

Which country has the most construction site investigation firms?

The United States leads with 1,993 companies, followed by Brazil (725) and France (402). Every construction site investigation firms list by country and city is linked on this page.

Which city has the most construction site investigation firms?

Sao Paulo leads with 126 company records, followed by Belo Horizonte (66) and New York (61).

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 36,225 professional contacts with verified work emails tracked across these 8,230 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 10, 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.