Company lists · Data refreshed September 2026

Top 25 Retrofit contractors based in France

Name: Retrofit contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,373 companies tracked

RevenueBase identified 1,373 retrofit contractors headquartered in France as of September 2026 and tracks 10,031 professional contacts across them, including 2,289 with verified work emails. Paris is the largest hub.

This list covers retrofit contractors 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 17, 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 17, 2026 86% judged on-target in blind review

1,373Companies

10,031Contacts tracked

2,289Verified emails

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The 25 largest retrofit contractors based in France

Ranked by team size

Top 25 of 1,373 retrofit contractors based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to retrofit contractors: 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	Technitoit	Indirect evidence	Les Ponts De Cé, FranceHQ checked Sep 17, 2026	501-1,000	519 contacts →
	Indirect evidence “Notre groupe, premier fabricant-applicateur, est le spécialiste français de l'amélioration de l'habitat.” Source: RevenueBase Database · checked Sep 17, 2026
2	KBANE	Indirect evidence	Villeneuve-d’ascq, FranceHQ checked Sep 17, 2026	501-1,000	376 contacts →
	Indirect evidence “Kbane est la 1ère enseigne en France, dédiée à la maison performante.” Source: RevenueBase Database · checked Sep 17, 2026
3	EFFY	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	201-500	292 contacts →
	Indirect evidence “Effy, spécialiste de l’efficience énergétique.” Source: RevenueBase Database · checked Sep 17, 2026
4	PPF France	Indirect evidence	Sainte-Luce Sur Loire, FranceHQ checked Sep 17, 2026	51-200	267 contacts →
	Indirect evidence “Spécialiste reconnu de la vente de solutions énergétiques dans le domaine de la rénovation, la société PPF (Préservation du Patrimoine) bénéficie d’une forte réputation de qualité…” Source: RevenueBase Database · checked Sep 17, 2026
5	Eurocombles By Opnr	Indirect evidence	Solaize, FranceHQ checked Sep 17, 2026	n/a	198 contacts →
	Indirect evidence “Eurocombles, isoler vos combles, garages et caves à seulement 1€!” Source: RevenueBase Database · checked Sep 17, 2026
6	FACE	Indirect evidence	FranceHQ checked Sep 17, 2026	501-1,000	183 contacts →
	Indirect evidence “Fondé il y a, Face est le partenaire de référence pour la ̂.” Source: RevenueBase Database · checked Sep 17, 2026
7	Agtherm	Indirect evidence	Colomiers, FranceHQ checked Sep 17, 2026	51-200	159 contacts →
	Indirect evidence “Agtherm est une PME indépendante dont l'activité dans le domaine du génie climatique et de la performance énergétique, vous assure la sécurité et la qualité de ses interventions…” Source: RevenueBase Database · checked Sep 17, 2026
8	accenta.ai	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 17, 2026	51-200	149 contacts →
	Indirect evidence “Accenta aide les acteurs de l’immobilier à maîtriser leurs charges, valoriser leurs actifs et répondre aux exigences réglementaires, grâce à la performance énergie-carbone.” Source: RevenueBase Database · checked Sep 17, 2026
9	RP France	Indirect evidence	Poitiers, FranceHQ checked Sep 17, 2026	201-500	146 contacts →
	Indirect evidence “Le Groupe RP FRANCE a pour métier premier l'amélioration et la rénovation de l'habitat (isolation des combles, couverture, charpente, façade, ventilation.).” Source: RevenueBase Database · checked Sep 17, 2026
10	IZI Solutions Durables	Indirect evidence	Courbevoie, FranceHQ checked Sep 17, 2026	51-200	109 contacts →
	Indirect evidence “En 2019, le Groupe EDF veut rendre la vie des Français plus simple et lance IZI by EDF, sa plateforme pour accompagner ses clients vers la transition énergétique.” Source: RevenueBase Database · checked Sep 17, 2026
11	Groupe Isore	Indirect evidence	Nantes - Angers -rennes - Vannes - Lille - Paris - Evreux - Le Mans, FranceHQ checked Sep 17, 2026	51-200	102 contacts →
	Indirect evidence “Spécialistes éco-responsables et engagés de l'enveloppe du bâtiment, le groupe ISORE réalise les travaux d'isolation thermique extérieure (ITE) des façades des bâtiments à haute…” Source: RevenueBase Database · checked Sep 17, 2026
12	Myrium	Indirect evidence	Vélizy-villacoublay, FranceHQ checked Sep 17, 2026	1,001-5,000	89 contacts →
	Indirect evidence “Myrium est un opérateur indépendant de référence au service de la performance durable des bâtiments.” Source: RevenueBase Database · checked Sep 17, 2026
13	ECO Environnement	Indirect evidence	Pantin, FranceHQ checked Sep 17, 2026	51-200	84 contacts →
	Indirect evidence “Éco Environnement – Expert en transition énergétique durable Éco Environnement accompagne entreprises et collectivités dans leur passage à l’énergie verte.” Source: RevenueBase Database · checked Sep 17, 2026
14	Dorémi Rénovation	Indirect evidence	Alixan, FranceHQ checked Sep 17, 2026	11-50	78 contacts →
	Indirect evidence “Dorémi est une coopérative de l'Economie Sociale et Solidaire, rattachée à Enercoop producteur et fournisseur d'électricité 100 % renouvelable.” Source: RevenueBase Database · checked Sep 17, 2026
15	Solares Bauen France	Indirect evidence	Strasbourg, FranceHQ checked Sep 17, 2026	51-200	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 17, 2026
16	Groupe Sofratherm - Setemi	Indirect evidence	Suresnes, FranceHQ checked Sep 17, 2026	51-200	68 contacts →
	Indirect evidence “Le groupe Sofratherm - Setemi est un groupe de services en efficacité énergétique.” Source: RevenueBase Database · checked Sep 17, 2026
17	Groupe Omnium	Indirect evidence	Marseille, FranceHQ checked Sep 17, 2026	201-500	63 contacts →
	Indirect evidence “Le Groupe OMNIUM est un acteur de référence régional, spécialiste de la rénovation de bâtiments.” Source: RevenueBase Database · checked Sep 17, 2026
18	Ithaque	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	56 contacts →
	Indirect evidence “Ithaque a été créée avec la conviction que la rénovation énergétique des maisons est un enjeu central de la transition écologique.” Source: RevenueBase Database · checked Sep 17, 2026
19	Crust Energie	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	55 contacts →
	Indirect evidence “Crust énergie réalise des travaux rénovation énergétique et les finance à 100%.” Source: RevenueBase Database · checked Sep 17, 2026
20	Ecogreenenergy	Indirect evidence	Strasbourg, FranceHQ checked Sep 17, 2026	51-200	54 contacts →
	Indirect evidence “Et si l’énergie que vous perdez aujourd’hui devenait votre plus grand levier de compétitivité?” Source: RevenueBase Database · checked Sep 17, 2026
21	VIRIA	Indirect evidence	Caen, FranceHQ checked Sep 17, 2026	51-200	54 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 17, 2026
22	Neovivo	Indirect evidence	Bouguenais, FranceHQ checked Sep 17, 2026	51-200	54 contacts →
	Indirect evidence “Neovivo est spécialisé dans l’amélioration globale de l’habitat : traitement de l’air, de l’eau, de l’habitat, chauffage et isolation.” Source: RevenueBase Database · checked Sep 17, 2026
23	EOLYA	Indirect evidence	Saint-martin-le-vinoux, FranceHQ checked Sep 17, 2026	51-200	51 contacts →
	Indirect evidence “EOLYA est une Société de Services en Efficacité Energétique et Environnementale (S²E³), active sur la région Auvergne-Rhône-Alpes, générant un chiffre d’affaires d'environ 15 M€…” Source: RevenueBase Database · checked Sep 17, 2026
24	Cegeclim Energies	Indirect evidence	Anglet, FranceHQ checked Sep 17, 2026	11-50	51 contacts →
	Indirect evidence “CEGECLIM ENERGIES est le Concessionnaire agréé HITACHI Cooling & Heating de BOSCH Home Confort Group sur la Nouvelle Aquitaine.” Source: RevenueBase Database · checked Sep 17, 2026
25	UBAT	Indirect evidence	Rennes, FranceHQ checked Sep 17, 2026	11-50	51 contacts →
	Indirect evidence “Fondé en 2008, UBAT est spécialisé dans l’accompagnement et le contrôle des bâtiments en vue de l’atteinte de performances énergétiques.” Source: RevenueBase Database · checked Sep 17, 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: retrofit contractors. 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 retrofit contractors.
Partial evidence: Its own public description names part of retrofit contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name retrofit contractors. 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 1,373 retrofit contractors based in France

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Retrofit contractors based in France at a glance

As of Sep 17, 2026

22.8%Verified-email coverage

7.3Average contacts per company

1-10Median size (employees)

6.0%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

753

11-50

496

51-200

201-500

501-1,000

1,001-5,000

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 1,373 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 retrofit contractors, 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 “retrofit contractors”. 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 retrofit contractors), 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 retrofit contractors, 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, 2,289 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 17, 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.

Retrofit contractors by metro

Retrofit contractors in Paris83

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 retrofit contractors, 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 retrofit contractors are there based in France?

RevenueBase identified 1,373 retrofit contractors 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?

Technitoit, headquartered in Les Ponts De Ce, tops this list with the largest team on record.

Which city has the most retrofit contractors?

Paris leads with 83 headquartered companies, followed by Lyon (23) and Toulouse (22).

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 2,289 verified decision-maker contacts tracked across these 1,373 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 17, 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.