Company lists · Data refreshed September 2026

Top 25 Geotechnical consulting firms based in France

Name: Geotechnical consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 1,186 companies tracked

RevenueBase identified 1,186 geotechnical consulting firms headquartered in France as of September 2026 and tracks 14,066 professional contacts across them, including 3,767 with verified work emails and 228 with mobile numbers. Paris is the largest hub.

This list covers geotechnical consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

1,186Companies

14,066Contacts tracked

3,767Verified emails

228Mobile numbers

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The 25 largest geotechnical consulting firms based in France

Ranked by team size

Top 25 of 1,186 geotechnical consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names geotechnical consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Soletanche BachyIndirect evidence	Rueil-Malmaison, France	5,001-10,000	1,211
	“Soletanche Bachy is a world benchmark in foundations and soil technologies, and is involved in over projects every year.” Source: company website · checked Sep 3, 2026
2	Groupe GéotecIndirect evidence	Reims, France	501-1,000	445
	“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: company website · checked Sep 3, 2026
3	ECR EnvironnementIndirect evidence	Larmor Plage, France	201-500	377
	“ECR Environnement est un bureau d’études et de conseils en ingénierie des sols, pluridisciplinaire et indépendant qui accompagne depuis les particuliers et professionnels dans…” Source: company website · checked Sep 3, 2026
4	InfraneoIndirect evidence	Pantin, France	1,001-5,000	347
	“INFRANEO est un groupe d’ingénierie de spécialité et de terrain, présent en France, en Allemagne, aux Pays-Bas, en Belgique et en Espagne.” Source: company website · checked Sep 3, 2026
5	Setec HydratecIndirect evidence	Paris, France	201-500	183
	“Bureau d’études techniques fondé en 1974, setec hydratec s’est positionné en tant qu’expert sur tous les sujets liés à l’ingénierie de l’eau et des sites et sols pollués, afin de…” Source: company website · checked Sep 3, 2026
6	Geotechnique SASIndirect evidence	Avignon, France	51-200	134
	“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: company website · checked Sep 3, 2026
7	TemsolIndirect evidence	Merignac Cedex, France	51-200	124
	“Temsol est reconnue depuis 50 ans comme le spécialiste dans les domaines de la géotechnique, des structures et de l’environnement.” Source: company website · checked Sep 3, 2026
8	CET IngénierieIndirect evidence	Lyon, France	51-200	117
	“Leader indépendant sur le marché de l'ingénierie française, CET Ingénierie met, au service de ses clients, plus de 50 ans de savoir-faire et des solutions techniques innovantes…” Source: company website · checked Sep 3, 2026
9	SemofiIndirect evidence	Villeneuve-Le-Roi, France	51-200	114
	“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: company website · checked Sep 3, 2026
10	OTIMOIndirect evidence	Boulogne-Billancourt, France	51-200	109
	“otimo est une société de conseil en ingénierie spécialisée dans les secteurs de l'Énergie, l'Environnement et les Infrastructures.” Source: company website · checked Sep 3, 2026
11	SGC Travaux SpéciauxIndirect evidence	Sainte-Foy-Largentiere, France	51-200	101
	“SGC Travaux Spéciaux, Société Générale de Confortements, propose des solutions pluri-techniques pour les soutènements et les fondations auprès des professionnels et des…” Source: company website · checked Sep 3, 2026
12	PCM IngenierieIndirect evidence	Saint-Mande, France	51-200	95
	“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: company website · checked Sep 3, 2026
13	Ingeo Ingénierie & Géomètre-ExpertIndirect evidence	Villeneuve-Dascq, France	51-200	95
	“INGEO - Ingénierie - Géomètre-Expert : un cabinet de Géomètres-Experts et son Bureau d’Etudes et d’Ingénierie réunis au service de vos projets 90 collaborateurs à Saint Omer…” Source: company website · checked Sep 3, 2026
14	MadecaIndirect evidence	Paris, France	51-200	74
	“Basés à Paris et Lyon, nous accompagnons nos clients à chaque phase de leurs projets grâce à ́ ́́, toujours prêtes à ́.” Source: company website · checked Sep 3, 2026
15	Synapse ConstructionIndirect evidence	Dijon, France	51-200	71
	“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: company website · checked Sep 3, 2026
16	AxiolisIndirect evidence	Villeurbanne, France	51-200	67
	“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: company website · checked Sep 3, 2026
17	SOL Solution SASPartial evidence	Riom, France	51-200	66
	“Sol Solution is a geotechnical, geological, and geophysical engineering firm, established in 1992.” Source: company website · checked Sep 3, 2026
18	Sertec Engineering ConsultingPartial evidence	Roquebrune Cap Martin, France	51-200	66
	“Sertec was founded in 1968 as an engineering consulting company for execution of calculation services in the field of civil engineering, plant engineering and evironmental…” Source: company website · checked Sep 3, 2026
19	ANA IngénierieIndirect evidence	Bordeaux, France	51-200	61
	“Bureau d’Ingénierie de la construction, maîtrise d’œuvre de Conception et d’Exécution, ANA Ingénierie regroupe les compétences d’une équipe de 73 collaborateurs autour de valeurs…” Source: company website · checked Sep 3, 2026
20	NovatlasIndirect evidence	Ivry-Sur-Seine, France	51-200	60
	“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: company website · checked Sep 3, 2026
21	Sodeba-GinkoIndirect evidence	Lille, France	51-200	59
	“Sodeba-Ginko est une entreprise spécialisée en ingénierie & conseil "Tous Corps d'État" composée de 4 départements techniques : Diagnostic & conseil, Conception TCE, Études…” Source: company website · checked Sep 3, 2026
22	GeoliaIndirect evidence	Morangis, France	51-200	58
	“Bureau d'Etudes Géotechniques, Hydrogéologie et Sites et Sols Pollués, Ingénierie des sols et fondations.” Source: company website · checked Sep 3, 2026
23	KAÉNAIndirect evidence	Saint Vincent De Mercuze, France	51-200	54
	“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: company website · checked Sep 3, 2026
24	Sage IngenierieIndirect evidence	Sallanches, France	51-200	51
	“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: company website · checked Sep 3, 2026
25	Entreprise PintoIndirect evidence	La Garenne-Colombes, France	51-200	46
	“ENTREPRISE PINTO is a civil engineering company based out of 48 Rue Jules Verne, Fougères, Brittany, France.” Source: company website · checked Sep 3, 2026

Showing 25 of 1,186 geotechnical consulting firms based in France

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Geotechnical consulting firms based in France at a glance

As of Sep 3, 2026

1-10Median size (employees)

ParisLargest hub · 85 HQs

228Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

759

11-50

330

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 geotechnical consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “geotechnical consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among geotechnical consulting firms, 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 an evidence 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, 3,767 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 3, 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.

Geotechnical consulting firms by metro

Geotechnical consulting firms in Paris85

Frequently asked

How many geotechnical consulting firms are there based in France?

RevenueBase identified 1,186 geotechnical consulting firms 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?

Soletanche Bachy, headquartered in Rueil-Malmaison, tops this list with the largest team on record.

Which city has the most geotechnical consulting firms?

Paris leads with 85 headquartered companies, followed by Lyon (17) and Toulouse (16).

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 3,767 verified decision-maker contacts tracked across these 1,186 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 3, 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.