# 30 leading Construction companies in the Seine-Saint-Denis department

Tamtam tracks 44 Construction companies headquartered in the Seine-Saint-Denis department. This list ranks the 30 largest by number of employees on LinkedIn, led by UNION TECHNIQUE DU BATIMENT, Hélios and BENTIN. Their median headcount is 60. Half of them were founded in 1986 or later. The most common headquarters are Montreuil (5), Saint-Denis (4) and Aubervilliers (3).

These construction companies in Seine-Saint-Denis include a mix of established mid-sized firms and younger companies, specializing in various building and infrastructure projects. Companies like UNION TECHNIQUE DU BATIMENT provide general construction services, while Hélios focuses on road signage and urban planning. BENTIN handles electrical installations in cities and buildings, and LAFON specializes in high and low voltage electrical systems.

The data shows a concentration of companies offering specialized services within the broader construction sector. For instance, MILLS Echafaudage - Etaiement - Coffrage designs and rents scaffolding, and SETHA is a provider of water supply works. Many of these firms have headquarters spread across different municipalities within the department, such as Romainville, La Courneuve, and Saint-Denis.

🇫🇷 Seine-Saint-Denis · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [UNION TECHNIQUE DU BATIMENT](https://www.tamtam.ai/c/union-technique-du-batiment) (utb.fr)<br>Construction company specializing in building projects, providing construction services and solutions in Pantin, Seine Saint Denis, France. | Construction | 🇫🇷 Romainville | 929 | 1933 |
| 2 | [Hélios](https://www.tamtam.ai/c/helios-la-courneuve) (groupe-helios.com)<br>Specializes in horizontal, vertical, temporary road signage, urban planning, accessibility, safety barriers, and construction site marking for safer roads. | Construction | 🇫🇷 La Courneuve | 260 | 2000 |
| 3 | [BENTIN](https://www.tamtam.ai/c/bentin) (serfim.com)<br>Based in Ile de France since 1959, BENTIN provides tailored solutions for electrical installations in cities and buildings, including design, construction, and maintenance | Construction | 🇫🇷 Aulnay-sous-Bois | 208 | 1959 |
| 4 | [LAFON](https://www.tamtam.ai/c/lafon) (electricite-lafon.com)<br>A company specializing in designing, installing, and maintaining high and low voltage electrical systems for 70 years, now led by new directors | Construction | 🇫🇷 Tremblay-en-France | 179 | 1947 |
| 5 | [COTEBA](https://www.tamtam.ai/c/coteba) (arteliagroup.com)<br>European leader in engineering and project management, specializing in construction, infrastructure, and environment projects with a focus on professionalism, ethics, and sustainability | Construction | 🇫🇷 Saint-Denis | 154 | 1961 |
| 6 | [MILLS Echafaudage - Etaiement - Coffrage](https://www.tamtam.ai/c/mills-echafaudage-etaiement-coffrage) (mills.fr)<br>Designs, sells, rents, and installs scaffolding and shoring products for construction and heritage building sectors with innovative solutions. | Construction | 🇫🇷 Le Bourget | 125 | 1939 |
| 7 | [Mercier](https://www.tamtam.ai/c/mercier) (mercier-sa.fr)<br>Specializing in building second works, the company offers services including roofing, plumbing maintenance, new and rehabilitated plumbing networks, all trades, and individual boiler maintenance | Construction | 🇫🇷 Villetaneuse | 112 |  |
| 8 | [GENIE FLEXION](https://www.tamtam.ai/c/genie-flexion) (genieflexion.com)<br>Network of agencies providing hydraulic flexible and fittings maintenance and repair services for construction, industry, logistics, agriculture, and equipment rental sectors. | Construction | 🇫🇷 Villepinte | 107 | 2001 |
| 9 | [SETHA](https://www.tamtam.ai/c/setha) (setha.fr)<br>Established in 1980 in Bobigny, SETHA is a leading provider in water supply works across various sectors in Ile-de-France, specializing in potable water | Construction | 🇫🇷 Bobigny | 100 | 1980 |
| 10 | [CICAD](https://www.tamtam.ai/c/cicad) (cicad.fr)<br>A leading construction engineering firm specializing in project management and construction operations across various sectors, now a part of the Ingérop group | Construction | 🇫🇷 Montreuil | 88 | 1986 |
| 11 | [SMRD-BAT 92](https://www.tamtam.ai/c/smrd-bat-92) (smrdbat92.fr)<br>Specializes in renovating and restoring housing units specifically for social landlords in the Île-de-France region since 1979. | Construction | 🇫🇷 Le Bourget | 83 | 1979 |
| 12 | [ENTRA](https://www.tamtam.ai/c/entra-aubervilliers) (entra.fr)<br>With roots dating back to 1945, this company specializes in electrical installations for public and private sectors, focusing on energy efficiency and technological innovation | Construction | 🇫🇷 Aubervilliers | 77 | 1945 |
| 13 | [Deschamps](https://www.tamtam.ai/c/deschamps-aubervilliers) (sa-deschamps.com)<br>A well-established company specializing in waterproofing, plumbing, emergency services, and roofing with a focus on efficiency, communication, and historical preservation | Construction | 🇫🇷 Aubervilliers | 67 | 1896 |
| 14 | [Ets Prunevieille](https://www.tamtam.ai/c/ets-prunevieille) (prunevieille.fr)<br>Specializes in general electricity, public lighting, and traffic signal installations with a strong family tradition and multi-generational expertise. | Construction | 🇫🇷 Saint-Denis | 66 | 1936 |
| 15 | [EPLS](https://www.tamtam.ai/c/epls) (epls.fr)<br>Specialized in electrical installations including strong and weak current systems such as surveillance, intercom, fire detection, and alarms for commercial and industrial sectors. | Construction | 🇫🇷 Montreuil | 60 | 1985 |
| 16 | [BATHELEC](https://www.tamtam.ai/c/bathelec) (bathelec.fr)<br>Since 2019, a network of BTP companies focuses on electricity, plumbing, heating, and air conditioning services, with rapid growth and emphasis on human values and performance | Construction | 🇫🇷 Saint-Denis | 57 | 2001 |
| 17 | [INEX BET](https://www.tamtam.ai/c/inex-bet) (inex.fr)<br>Support architects and developers in designing sustainable, efficient buildings with expertise in HVAC, MEP engineering, green standards, and BIM innovation. | Construction | 🇫🇷 Montreuil | 54 | 1978 |
| 18 | [SABP](https://www.tamtam.ai/c/sabp) (sabpbatisseurs.fr)<br>Constructs new collective housing, EPHADs, nurseries, student and worker hostels, offices, and hotels in the Parisian region with strong HSE focus. | Construction | 🇫🇷 Le Raincy | 51 | 1992 |
| 19 | [Le Pavé](https://www.tamtam.ai/c/le-pave) (le-pave.com)<br>The company specializes in creating sustainable building materials from recycled plastic waste, offering a range of eco-friendly solutions for architects and designers | Construction | 🇫🇷 Aubervilliers | 46 | 2018 |
| 20 | [CLEMANCON](https://www.tamtam.ai/c/clemancon) (clemancon.fr)<br>With over 190 years of experience, this company within the VINCI Energies group specializes in electrical engineering for commercial real estate, logistics buildings, and luxury hotels | Construction | 🇫🇷 Villepinte | 45 | 1828 |
| 21 | [FACEA GROUP](https://www.tamtam.ai/c/facea-group) (faceagroup.com)<br>Specialized engineering consultancy offering design, project management, and multidisciplinary services for private and public real estate projects including housing and public facilities. | Construction | 🇫🇷 Noisy-le-Grand | 42 | 2009 |
| 22 | [SNV](https://www.tamtam.ai/c/snv-rosny-sous-bois) (snv-tp.fr)<br>Founded in 1985, SNV specializes in road work, utility networks, and sanitation for local authorities They prioritize quality, safety, and client satisfaction | Construction | 🇫🇷 Rosny-sous-Bois | 37 | 1985 |
| 23 | [TTI Transport Tertiaire Industrie](https://www.tamtam.ai/c/tti-transport-tertiaire-industrie) (tti-france.com)<br>A major player in electrical installation, serving private and public clients in transportation, commercial, and industrial sectors, with a revenue of €261 million in 2016 | Construction | 🇫🇷 Noisy-le-Sec | 30 | 2002 |
| 24 | [Bergerat RENT France](https://www.tamtam.ai/c/bergerat-rent-france) (bergerat-rent.com)<br>A subsidiary of Bergerat Monnoyeur, this company offers short and long-term rental solutions for construction equipment across various sectors in France and Belgium | Construction | 🇫🇷 Saint-Denis | 30 | 1991 |
| 25 | [ETEL](https://www.tamtam.ai/c/etel) (trema-multitechnique.com)<br>Specializing in electrical work for over 25 years, offering a wide range of services including high and low voltage installations, communication networks, automation, and security systems | Construction | 🇫🇷 Montreuil | 27 |  |
| 26 | [ISOLTECH](https://www.tamtam.ai/c/isoltech) (isoltech.co)<br>Specializing in plastering, suspended ceilings, and thermal/acoustic insulation for both public and private projects Prioritizing professionalism, safety, quality, and environmental protection | Construction | 🇫🇷 La Courneuve | 24 | 2012 |
| 27 | [LE PRESTATAIRE DIAMANT](https://www.tamtam.ai/c/le-prestataire-diamant) (leprestatairediamant.com)<br>Specializing in industrial cleaning, we provide meticulous and efficient cleaning services for construction site living quarters Additional services include logistics, catering, and staffing | Construction | 🇫🇷 Noisy-le-Grand | 24 | 2011 |
| 28 | [A.B.T.' (ACTIVITE BATIMENT ET TECHNIQUE')](https://www.tamtam.ai/c/a-b-t-activite-batiment-et-technique) (abt-prim.fr)<br>A civil engineering company based in Montreuil, France specializing in building activities and technical services | Construction | 🇫🇷 Montreuil | 20 | 2006 |
| 29 | [HERAL GROUPE](https://www.tamtam.ai/c/heral-groupe) (heral-groupe.fr)<br>A leading player in asbestos removal, lead abatement, and demolition within the construction industry, with a focus on experienced staff and safety | Construction | 🇫🇷 Tremblay-en-France | 20 | 2013 |
| 30 | [SOREB](https://www.tamtam.ai/c/soreb) (soreb-rehabilitation.fr)<br>A civil engineering company located in Rosny Sous Bois, France, specializing in various civil engineering projects and services for clients | Construction | 🇫🇷 Rosny-sous-Bois | 18 | 2005 |

## 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.

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Source: https://www.tamtam.ai/l/construction-companies-seine-saint-denis