Company lists · Data refreshed September 2026
Top 25 Building systems engineering firms based in France
RevenueBase identified 541 building systems engineering firms headquartered in France as of September 2026 and tracks 5,770 professional contacts across them, including 2,051 with verified work emails. Paris is the largest hub.
This list covers building systems engineering 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, 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.
The 25 largest building systems engineering firms based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 170 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 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 142 contacts → | ||||
Indirect evidence “EPI est une société d'ingénierie, qui exerce ses activités dans les domaines des infrastructures, du bâtiment et des Energies et de l'industrie pour :> l'électricité et les…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 106 contacts → | ||||
Indirect evidence “Fouchard conçoit et met en place tous types d’installations de génie climatique pour les industriels, les professionnels comme les particuliers.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 95 contacts → | ||||
Indirect evidence “BARBANEL a pour vocation d’assurer des missions de consultant jusqu’à la maîtrise d’oeuvre totale des projets qui lui sont confiés.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 89 contacts → | ||||
Indirect evidence “Fondée en 1983 par Patrice Bobion (artisan électricien) et Jean-Pierre Joanin (artisan plombier) l’entreprise Bobion & Joanin est devenue en près de 40 ans un acteur majeur du…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 76 contacts → | ||||
Indirect evidence “3iA est un bureau d'ingénierie du bâtiment ayant les compétences en structure, fluides/thermique, VRD, économie de la construction, sismique, BIM” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 74 contacts → | ||||
Indirect evidence “Actuellement composée de 24 collaborateur·trices, la société RBI apporte son expertise technique auprès des maîtres d'ouvrage et des architectes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 73 contacts → | ||||
Indirect evidence “Akila Ingénierie est un bureau d'études en ingénierie du bâtiment à taille humaine et proche de ses clients.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 72 contacts → | ||||
Indirect evidence “Solares Bauen est un bureau d’étude fluides, thermique et environnement dans le bâtiment créée en 2005 à Strasbourg.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 61 contacts → | ||||
Indirect evidence “Créée en 1992, ALTERNET dont les bureaux sont situés à Paris (Siège) et à Bordeaux, est une société d’ingénierie indépendante spécialisée dans les domaines techniques du bâtiment…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 60 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 58 contacts → | ||||
Indirect evidence “Spécialisé dans le génie électrique, courants forts, courants faibles, dans le génie climatique et les énergies renouvelables, EGA intervient principalement pour le secteur…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 55 contacts → | ||||
Indirect evidence “ILAO est un bureau d'études en ingénierie d'écoconception et en prescription de solutions techniques innovantes en Industrie et Bâtiment.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 54 contacts → | ||||
Indirect evidence “GNAT Ingénierie intervient en maîtrise d’œuvre tous corps d’état et ingénierie générale dans la conception de bâtiments industriels.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 50 contacts → | ||||
Strong evidence “CESAMES is the leading consulting, training, and engineering group in France for the "systems" approach, MBSE, and systems architecture.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 49 contacts → | ||||
Indirect evidence “Sietra Provence, membre du Groupe GCC, est spécialisé en Génie Climatique et Plomberie depuis plus de 70 ans.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 49 contacts → | ||||
Indirect evidence “S2T est une société d'ingénierie technique qui possède une double compétence dans les domaines du bâtiment et de l'énergie urbaine.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 48 contacts → | ||||
Indirect evidence “Specialized in the design, installation and commissioning of plumbing, heating and ventilation solutions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 44 contacts → | ||||
Indirect evidence “FERN réalise des travaux et de la maintenance dans la climatisation, ventilation, chauffage, plomberie et électricité.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 42 contacts → | ||||
Partial evidence “Since 40 years, we help architects and developper to design sustainable and efficient buildings.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 41 contacts → | ||||
Indirect evidence “L’équipe AXYS, forte de son expérience dans le domaine, met en application depuis plus de 25 ans, l’ensemble des nouvelles technologies applicables aux équipements techniques des…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 41 contacts → | ||||
Indirect evidence “Reconnue dans l’Ouest depuis 1974, forte d’une équipe de près de soixante collaborateurs, notre entreprise indépendante intervient en études, maîtrise d’oeuvre et ingénierie du…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
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: building systems engineering firms. 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 building systems engineering firms.
- Partial evidence
- Its own public description names part of building systems engineering firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name building systems engineering firms. 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 541 building systems engineering firms based in France
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Building systems engineering firms based in France at a glance
As of Sep 16, 2026Companies by employee count
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 541 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 building systems engineering firms, 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 “building systems engineering firms”. 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 building systems engineering firms), 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 building systems engineering 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 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, 2,051 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.
Building systems engineering firms by metro
- Building systems engineering firms in Paris45
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 building systems engineering firms, 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 building systems engineering firms are there based in France?
RevenueBase identified 541 building systems engineering 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?
Groupe Projex, headquartered in Villeneuve-Dascq, tops this list with the largest team on record.
Which city has the most building systems engineering firms?
Paris leads with 45 headquartered companies, followed by Lyon (11) and Montpellier (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 2,051 verified decision-maker contacts tracked across these 541 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.
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