# The 30 largest Construction companies in the Ain department

Tamtam tracks 42 Construction companies headquartered in the Ain department. This list ranks the 30 largest by number of employees on LinkedIn, led by ISERBA, Grosfillex Group and SGB | HÜNNEBECK Brand France. Their median headcount is 49. Half of them were founded in 1978 or later. The most common headquarters are Bourg-en-Bresse (3).

The construction companies in Ain primarily include mid-sized firms, many of which specialize in specific niches within the industry. Companies like ISERBA and Groupe ISERBA Invest focus on residential maintenance, while Grosfillex Group specializes in furnishing and remodeling. SGB | HÜNNEBECK Brand France provides scaffolding and formwork, and Tubesca-Comabi offers access and height work solutions. PI INSTALL designs and installs specialized rooms, and Francioli creates urban furniture.

A notable pattern is the concentration of companies in specific towns. For instance, Beynost hosts ISERBA, Groupe ISERBA Invest, and BCI, all involved in residential and home renovation services. Trévoux is home to SGB | HÜNNEBECK Brand France and Tubesca-Comabi, both specializing in access and structural support for construction.

🇫🇷 Ain · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [ISERBA](https://www.tamtam.ai/c/iserba) (iserba.fr)<br>A national leader in social housing maintenance, offering a wide range of services with 800 employees across 25 agencies in France | Construction | 🇫🇷 Beynost | 473 | 1978 |
| 2 | [Grosfillex Group](https://www.tamtam.ai/c/grosfillex-group) (grosfillex-expert.com)<br>This company specializes in furnishing and remodeling indoor and outdoor spaces with French designer products for homes, businesses, and public venues worldwide | Construction | 🇫🇷 Arbent | 358 | 1927 |
| 3 | [SGB \| HÜNNEBECK Brand France](https://www.tamtam.ai/c/sgb-hunnebeck-brand-france) (brandfrance.fr)<br>provides scaffolding, formwork, and industrial safety services through globally recognized brands focusing on construction and infrastructure sectors | Construction | 🇫🇷 Trévoux | 253 | 1853 |
| 4 | [Tubesca-Comabi](https://www.tamtam.ai/c/tubesca-comabi) (tubesca-comabi.com)<br>Specializes in standard and custom access and height work solutions for construction, industrial maintenance, and aerospace sectors globally. | Construction | 🇫🇷 Trévoux | 230 | 1954 |
| 5 | [Groupe ISERBA Invest](https://www.tamtam.ai/c/groupe-iserba-invest) (groupeiserba.fr)<br>Specializes in multi-technical maintenance services for residential properties across France, ensuring efficient upkeep and repair solutions. | Construction | 🇫🇷 Beynost | 179 | 1978 |
| 6 | [BOURGEOIS_PATRIMOINE - VINCI Construction](https://www.tamtam.ai/c/bourgeois-patrimoine-vinci-construction) (bourgeois-entreprise.fr)<br>Specializing in design and construction of roofs, Bourgeois provides personalized solutions for public and private projects using a variety of materials Partnered with VINCI Construction | Construction | 🇫🇷 Miribel | 90 |  |
| 7 | [PI INSTALL](https://www.tamtam.ai/c/pi-install) (groupepiinstall.com)<br>Design and installation of cleanrooms, cold rooms, fireproof and acoustic solutions for pharmaceutical, food, healthcare, and industrial sectors. | Construction | 🇫🇷 Montrevel-En-Bresse | 87 | 2001 |
| 8 | [Francioli](https://www.tamtam.ai/c/francioli) (francioli.fr)<br>With over 35 years of experience, the company designs and installs aesthetic, reliable, and sustainable urban furniture solutions while prioritizing safety and environmental concerns | Construction | 🇫🇷 Chaleins | 84 | 1984 |
| 9 | [RUIZ](https://www.tamtam.ai/c/ruiz) (ruiz-btp.com)<br>A construction company specializing in renovations, restructuring, and new builds, prioritizing reactivity, methodology, constant communication, and innovation for 49 years | Construction | 🇫🇷 Dagneux | 78 | 1969 |
| 10 | [BCI](https://www.tamtam.ai/c/bci-beynost) (bci-solutions.fr)<br>Specializes in home renovation focusing on insulation, ventilation, heating, and maintenance to improve comfort and reduce energy costs. | Construction | 🇫🇷 Beynost | 68 | 2012 |
| 11 | [PLASTEUROP](https://www.tamtam.ai/c/plasteurop) (plasteurop.fr)<br>A French company manufacturing partition, ceiling, door, and window building systems for various industries worldwide, focusing on innovation, quality, and service | Construction | 🇫🇷 Vonnas | 65 | 1978 |
| 12 | [Floriot Construction](https://www.tamtam.ai/c/floriot-construction) (tglgroup.fr)<br>FLORIOT Construction was liquidated in 2019 but assets were acquired by SC FLORIOT, continuing operations under the new structure Visit wwwfloriotfr | Construction | 🇫🇷 Bourg-en-Bresse | 56 | 1944 |
| 13 | [SC FLORIOT](https://www.tamtam.ai/c/sc-floriot) (floriot.fr)<br>Specializes in complex, high-technical construction projects including industrial, healthcare, and educational buildings with a strong regional presence and team focus. | Construction | 🇫🇷 Bourg-en-Bresse | 55 | 2019 |
| 14 | [Groupe Brunet](https://www.tamtam.ai/c/groupe-brunet) (groupebrunet.com)<br>Specializes in eco-friendly development with active innovation monitoring and advanced operational techniques, including autonomous nomadic living space projects. | Construction | 🇫🇷 Ambérieu-en-Bugey | 55 | 1964 |
| 15 | [LPB](https://www.tamtam.ai/c/lpb) (lpb-sa.com)<br>Designing and producing standard and custom concrete products for rainwater, runoff, and wastewater collection and treatment, as well as road demarcation, surfacing, and water drainage. | Construction | 🇫🇷 Crottet | 49 | 1965 |
| 16 | [Cegelec Centre Est Tertiaire](https://www.tamtam.ai/c/cegelec-centre-est-tertiaire) (cegelec-centre-est-tertiaire.fr)<br>Specializing in design and installation of electrical systems for commercial properties in Lyon and Ain, with two separate entities for different project sizes | Construction | 🇫🇷 Saint-Maurice-de-Beynost | 49 |  |
| 17 | [Socafl](https://www.tamtam.ai/c/socafl) (socafl.com)<br>Established in 1930, this regional independent SME specializes in public works projects in the Ain, Saône et Loire, and Rhône regions, offering expertise in infrastructure services | Construction | 🇫🇷 Crottet | 36 | 1930 |
| 18 | [RABUEL CONSTRUCTION](https://www.tamtam.ai/c/rabuel-construction) (rabuel-construction.fr)<br>A construction company located in France specializing in construction projects and services | Construction | 🇫🇷 Cormoranche-sur-Saône | 35 | 1968 |
| 19 | [KEOPS conception](https://www.tamtam.ai/c/keops-conception) (keops-conception.com)<br>Independent company specializing in general contracting, real estate development, and project management for industrial and commercial projects across France. | Construction | 🇫🇷 Neyron | 33 | 2006 |
| 20 | [S.B.T.P. (Société Bressane de Travaux Publics)](https://www.tamtam.ai/c/s-b-t-p-societe-bressane-de-travaux-publics) (viviany.fr)<br>Specialized in construction and maintenance of electrical networks, gas distribution, public lighting, fiber optics, and green energy solutions with various certifications and multiple regional branches | Construction | 🇫🇷 Bourg-en-Bresse | 33 | 1956 |
| 21 | [Richard Construction](https://www.tamtam.ai/c/richard-construction) (richard-construction.fr)<br>Specialized in construction of industrial, commercial, educational, and public buildings, as well as renovation projects Emphasizes excellent service and client support | Construction | 🇫🇷 Parcieux | 31 | 2013 |
| 22 | [GIFETAL ALUMINIUM](https://www.tamtam.ai/c/gifetal-aluminium) (gifetal.fr)<br>Specializing in custom-made aluminum guardrails, gates, and sunscreens, offering a complete range of customizable products for durable protection and enhanced home aesthetics | Construction | 🇫🇷 Civrieux | 30 | 1993 |
| 23 | [SMJM Bois](https://www.tamtam.ai/c/smjm-bois) (smjm.fr)<br>A company located in Replonges specializing in wooden construction in the 01 region | Construction | 🇫🇷 Replonges | 27 | 1979 |
| 24 | [SATIF - Travaux Subaquatiques](https://www.tamtam.ai/c/satif-travaux-subaquatiques) (satif-sa.com)<br>Specializing in underwater work since 1986, this company offers services such as diving, well regeneration, underwater dredging, and innovative solutions in France | Construction | 🇫🇷 Dagneux | 26 | 1986 |
| 25 | [GOYON](https://www.tamtam.ai/c/goyon) (goyon.fr)<br>Fabrication de matériel pour transport de vrac, convoyeurs à bande, pour mines, BTP, industrie, énergie, déchets, urbanisme. | Construction | 🇫🇷 Saint-Didier-sur-Chalaronne | 24 | 1984 |
| 26 | [WEEEZE - INVISIBLE WINDOWS](https://www.tamtam.ai/c/weeeze-invisible-windows) (weeeze.com)<br>Design and manufacture of invisible sliding window systems with large openings, high thermal performance, and enhanced security for architects. | Construction | 🇫🇷 Leyment | 20 | 2020 |
| 27 | [GERMAIN ARMATURES](https://www.tamtam.ai/c/germain-armatures) (germain.fr)<br>A company established in 1966 specializing in providing and installing reinforcements, offering certified production units, trading services, and on-site implementation of reinforcements | Construction | 🇫🇷 Val-Revermont | 17 | 1966 |
| 28 | [CONFLUENCE ingénierie géotechnique](https://www.tamtam.ai/c/confluence-ingenierie-geotechnique) (beconfluence.com)<br>CONFLUENCE specializes in high-value geotechnical consulting for building, infrastructure, and public works projects, offering services from site investigations to project monitoring | Construction | 🇫🇷 Saint-Vulbas | 15 | 2007 |
| 29 | [ROUX TP Groupe FONTENAT](https://www.tamtam.ai/c/roux-tp-groupe-fontenat)<br>A company specializing in drinking water networks, sewerage systems, irrigation, and separative sewage systems in the Ain department and neighboring areas | Construction | 🇫🇷 Péronnas | 15 | 1922 |
| 30 | [Servignat SAS](https://www.tamtam.ai/c/servignat-sas) (servignat.com)<br>A company with over a century of experience specializing in heating, air conditioning, ventilation, plumbing, and sanitary installations, ensuring compliance with thermal regulations | Construction | 🇫🇷 Ambérieu-en-Bugey | 14 | 1920 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

## More company lists in the Ain department

- [The largest companies in the Ain department](https://www.tamtam.ai/l/largest-companies-ain) (511)
- [Manufacturers in the Ain department](https://www.tamtam.ai/l/manufacturers-ain) (98)
- [Companies with in-house R&D in the Ain department](https://www.tamtam.ai/l/r-and-d-companies-ain) (90)
- [Multinational companies in the Ain department](https://www.tamtam.ai/l/multinational-companies-ain) (73)
- [Contract manufacturers in the Ain department](https://www.tamtam.ai/l/contract-manufacturers-ain) (64)
- [Hardware manufacturers in the Ain department](https://www.tamtam.ai/l/hardware-companies-ain) (53)
- [Plastics Manufacturing companies in the Ain department](https://www.tamtam.ai/l/plastics-manufacturing-companies-ain) (53)
- [Chemical companies in the Ain department](https://www.tamtam.ai/l/chemical-companies-ain) (51)
- [Family-owned companies in the Ain department](https://www.tamtam.ai/l/family-owned-companies-ain) (46)
- [Distributors and wholesalers in the Ain department](https://www.tamtam.ai/l/distributors-and-wholesalers-ain) (41)
- [Retail chains in the Ain department](https://www.tamtam.ai/l/retail-chains-ain) (38)

## The same list elsewhere in France

- [Construction companies in France](https://www.tamtam.ai/l/construction-companies-france) (2,209)
- [Construction companies in Île-de-France](https://www.tamtam.ai/l/construction-companies-ile-de-france) (556)
- [Construction companies in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/construction-companies-auvergne-rhone-alpes) (372)
- [Construction companies in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/construction-companies-provence-alpes-cote-dazur) (202)
- [Construction companies in Grand Est](https://www.tamtam.ai/l/construction-companies-grand-est) (196)
- [Construction companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/construction-companies-nouvelle-aquitaine) (177)
- [Construction companies in Pays de la Loire](https://www.tamtam.ai/l/construction-companies-pays-de-la-loire) (141)
- [Construction companies in the Rhône department](https://www.tamtam.ai/l/construction-companies-rhone) (140)
- [Construction companies in Occitanie](https://www.tamtam.ai/l/construction-companies-occitanie) (133)
- [Construction companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/construction-companies-hauts-de-seine) (113)
- [Construction companies in Hauts-de-France](https://www.tamtam.ai/l/construction-companies-hauts-de-france) (108)
- [Construction companies in Brittany](https://www.tamtam.ai/l/construction-companies-brittany) (92)
- [Construction companies in Normandy](https://www.tamtam.ai/l/construction-companies-normandy) (92)
- [Construction companies in the Bouches-du-Rhône department](https://www.tamtam.ai/l/construction-companies-bouches-du-rhone) (91)
- [Construction companies in the Gironde department](https://www.tamtam.ai/l/construction-companies-gironde) (67)
- [Construction companies in the Val-de-Marne department](https://www.tamtam.ai/l/construction-companies-val-de-marne) (63)
- [Construction companies in the Loire-Atlantique department](https://www.tamtam.ai/l/construction-companies-loire-atlantique) (57)
- [Construction companies in the Seine-et-Marne department](https://www.tamtam.ai/l/construction-companies-seine-et-marne) (57)
- [Construction companies in the Essonne department](https://www.tamtam.ai/l/construction-companies-essonne) (56)
- [Construction companies in the Isère department](https://www.tamtam.ai/l/construction-companies-isere) (52)
- [Construction companies in the Haute-Garonne department](https://www.tamtam.ai/l/construction-companies-haute-garonne) (51)
- [Construction companies in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/construction-companies-bourgogne-franche-comte) (50)
- [Construction companies in the Yvelines department](https://www.tamtam.ai/l/construction-companies-yvelines) (50)
- [Construction companies in Paris](https://www.tamtam.ai/l/construction-companies-paris) (112)

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Source: https://www.tamtam.ai/l/construction-companies-ain