Company lists · Data refreshed September 2026

Top 25 Site assessment companies based in France

Name: Site assessment companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 717 companies tracked

RevenueBase identified 717 site assessment companies headquartered in France as of September 2026 and tracks 6,891 professional contacts across them, including 2,299 with verified work emails. Paris is the largest hub.

This list covers site assessment companies headquartered in France, 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 22, 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 22, 2026 86% judged on-target in blind review

717Companies

6,891Contacts tracked

2,299Verified emails

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The 25 largest site assessment companies based in France

Ranked by team size

Top 25 of 717 site assessment companies based in France, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to site assessment companies: 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	Fondasol	Indirect evidence	Avignon, FranceHQ checked Sep 22, 2026	501-1,000	522 contacts →
	Indirect evidence “le Groupe Fondasol accompagne les projets de construction et d’aménagement du territoire sur l'ensemble de ses domaines d’expertises.” Source: RevenueBase Database · checked Sep 22, 2026
2	Groupe Géotec	Indirect evidence	Quetigny, FranceHQ checked Sep 22, 2026	501-1,000	441 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026
3	ADX Groupe	Indirect evidence	Château-gontier, FranceHQ checked Sep 22, 2026	201-500	343 contacts →
	Indirect evidence “ADX Groupe, votre bureau d'études de l'existant - Réalisation de diagnostics immobiliers obligatoires lors de la transaction ou location des biens- Recherche d’amiante dans tous…” Source: RevenueBase Database · checked Sep 22, 2026
4	Projex Ingénierie	Indirect evidence	Villeneuve D'ascq, FranceHQ checked Sep 22, 2026	201-500	158 contacts →
	Indirect evidence “GROUPE PROJEX spécialiste de l'ingénierie tous corps d'état en maîtrise d’œuvre de conception, d'exécution et d'exploitation.” Source: RevenueBase Database · checked Sep 22, 2026
5	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	51-200	143 contacts →
	Indirect evidence “Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: RevenueBase Database · checked Sep 22, 2026
6	Geotechnique SAS	Indirect evidence	Avignon, FranceHQ checked Sep 22, 2026	51-200	134 contacts →
	Indirect evidence “GEOTECHNIQUE SAS - Sciences de la Terre est un bureau d'études en ingénierie géotechnique qui apporte son savoir-faire à l'ensemble des protagonistes intervenant dans un projet de…” Source: RevenueBase Database · checked Sep 22, 2026
7	Soletanche Freyssinet	Indirect evidence	Rueil Malmaison, FranceHQ checked Sep 22, 2026	10001+	131 contacts →
	Indirect evidence “As the world leader in soil, structural and nuclear engineering, operating in some 120 countries, the Soletanche Freyssinet group brings together an unparalleled array of…” Source: RevenueBase Database · checked Sep 22, 2026
8	Temsol	Indirect evidence	Merignac Cedex, FranceHQ checked Sep 22, 2026	51-200	125 contacts →
	Indirect evidence “Temsol est reconnue depuis 50 ans comme le spécialiste dans les domaines de la géotechnique, des structures et de l’environnement.” Source: RevenueBase Database · checked Sep 22, 2026
9	Semofi	Indirect evidence	Villeneuve-le-roi, FranceHQ checked Sep 22, 2026	51-200	114 contacts →
	Indirect evidence “Filiale du Groupe SEMOFI, acteur majeur des filières géotechnique et SSP, SEMOFI est un bureau d’études dont la vocation est d’accompagner les collectivités territoriales…” Source: RevenueBase Database · checked Sep 22, 2026
10	Quardina	Indirect evidence	Vélizy-villacoublay, FranceHQ checked Sep 22, 2026	51-200	103 contacts →
	Indirect evidence “Quardina est une société d’audits, de diagnostics, d’instrumentations et d’Assistance Technique à Maîtrise d’Ouvrage (ATMO).” Source: RevenueBase Database · checked Sep 22, 2026
11	AED Groupe	Indirect evidence	Mérignac, FranceHQ checked Sep 22, 2026	51-200	99 contacts →
	Indirect evidence “A votre service depuis 2007, AED GROUPE est un cabinet polyvalent de diagnostics immobiliers, capable d’intervenir tant pour les particuliers (dans le cadre des transactions…” Source: RevenueBase Database · checked Sep 22, 2026
12	PCM Ingenierie	Indirect evidence	Saint-mandé, FranceHQ checked Sep 22, 2026	51-200	96 contacts →
	Indirect evidence “PCM ingénierie est un groupe de BET pluridisciplinaires regroupés au sein de 7 sociétés : PCM GEODATA : Constitué de SECTEUR créé en 1992, intégré à PCM en 2013 et GEOVIVIER créé…” Source: RevenueBase Database · checked Sep 22, 2026
13	Envisol	Partial evidence	La Tour Du Pin, FranceHQ checked Sep 22, 2026	51-200	70 contacts →
	Partial evidence “ENVISOL est une entreprise spécialisée dans le conseil et l’ingénierie offrant des prestations dans le domaine des sites et sols pollués.” Source: RevenueBase Database · checked Sep 22, 2026
14	Synapse Construction	Indirect evidence	Écully, FranceHQ checked Sep 22, 2026	51-200	70 contacts →
	Indirect evidence “SYNAPSE Construction, société d'ingénierie bureau d'études techniques (BET) dans les métiers du bâtiment, répond aux besoins des donneurs d'ordres publics et privés.” Source: RevenueBase Database · checked Sep 22, 2026
15	Axiolis	Indirect evidence	La Penne-sur-huveaune, FranceHQ checked Sep 22, 2026	51-200	67 contacts →
	Indirect evidence “Depuis plus de 10 ans nous intervenons sur l’ensemble des métiers de l’ingénierie des structures neuves et existantes en maîtrise d’œuvre, exécution, instrumentation et diagnostic…” Source: RevenueBase Database · checked Sep 22, 2026
16	SOL Solution SAS	Indirect evidence	Riom, FranceHQ checked Sep 22, 2026	51-200	65 contacts →
	Indirect evidence “Sol Solution is a geotechnical, geological, and geophysical engineering firm, established in 1992.” Source: RevenueBase Database · checked Sep 22, 2026
17	Setec Diadès	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	11-50	63 contacts →
	Indirect evidence “DIADES est la société du groupe SETEC spécialisée dans le diagnostic des structures et a pour missions principales - l’ingénierie du diagnostic, de la maintenance, les études de…” Source: RevenueBase Database · checked Sep 22, 2026
18	Novatlas	Indirect evidence	Ivry-sur-seine, FranceHQ checked Sep 22, 2026	51-200	60 contacts →
	Indirect evidence “Depuis plus de 30 ans, Novatlas accompagne les acteurs du marché de la construction pour relever les défis d’aujourd’hui : bâtir, réinventer l’espace urbain et préserver notre…” Source: RevenueBase Database · checked Sep 22, 2026
19	Geolia	Partial evidence	Morangis, FranceHQ checked Sep 22, 2026	51-200	58 contacts →
	Partial evidence “Bureau d'Etudes Géotechniques, Hydrogéologie et Sites et Sols Pollués, Ingénierie des sols et fondations.” Source: RevenueBase Database · checked Sep 22, 2026
20	KAÉNA	Indirect evidence	Saint Vincent De Mercuze, FranceHQ checked Sep 22, 2026	51-200	53 contacts →
	Indirect evidence “Bureau d'études géotechniques situé au coeur des Alpes (1 agence au Touvet et 1 agence à Annecy,1 agence à St Priest) ayant ses propres ateliers de sondages (5 foreuses dont 1…” Source: RevenueBase Database · checked Sep 22, 2026
21	EPDC	Indirect evidence	Ivry-sur-seine, FranceHQ checked Sep 22, 2026	11-50	51 contacts →
	Indirect evidence “Bienvenue chez EPDC, expertise pluridisciplinaire et indépendante en ingénierie et études techniques, où le savoir-faire et l'innovation élaborent des solutions uniques.” Source: RevenueBase Database · checked Sep 22, 2026
22	Sage Ingenierie	Indirect evidence	Gières, FranceHQ checked Sep 22, 2026	51-200	51 contacts →
	Indirect evidence “La Société Alpine Géotechnique (SAGE Ingénierie) est un bureau d'études de sols indépendant (SAS) dont les services couvrent toute l’ingénierie géotechnique spécifique aux…” Source: RevenueBase Database · checked Sep 22, 2026
23	Gph, Bureau D'études Pour L'habitat	Indirect evidence	Challans, FranceHQ checked Sep 22, 2026	11-50	42 contacts →
	Indirect evidence “GPH est une entité du groupe NOVAM, au sein du pôle Habitat et géotechnique de l'habitat.” Source: RevenueBase Database · checked Sep 22, 2026
24	Fondouest	Indirect evidence	Longueville, FranceHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “FONDOUEST is a construction company based out of ZONE ARTISANALE 727 RUE DU PONT CE, LONGUEVILLE, France.” Source: RevenueBase Database · checked Sep 22, 2026
25	Technosol	Indirect evidence	Ballainvilliers, FranceHQ checked Sep 22, 2026	51-200	42 contacts →
	Indirect evidence “TECHNOSOL est le bureau d'ingénierie géotechnique du Groupe GENGIS, Groupe indépendant d'ingénieries spécialisées en géosciences et structure.” Source: RevenueBase Database · checked Sep 22, 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: site assessment companies. 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 site assessment companies.
Partial evidence: Its own public description names part of site assessment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name site assessment companies. 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 717 site assessment companies based in France

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Site assessment companies based in France at a glance

As of Sep 22, 2026

33.4%Verified-email coverage

9.6Average contacts per company

1-10Median size (employees)

7.0%Largest-city concentration · Paris

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

516

11-50

143

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 717 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 site assessment companies, 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 France whose own description of what they do matches “site assessment companies”. 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 site assessment companies), 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 site assessment companies, and records with no verified work email. Companies headquartered outside France 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, 2,299 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 22, 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.

Site assessment companies by metro

Site assessment companies in Paris50

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 site assessment companies, 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 site assessment companies are there based in France?

RevenueBase identified 717 site assessment companies headquartered in France 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?

Fondasol, headquartered in Avignon, tops this list with the largest team on record.

Which city has the most site assessment companies?

Paris leads with 50 headquartered companies, followed by Lyon (14) and Montpellier (12).

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 2,299 verified decision-maker contacts tracked across these 717 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 22, 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.