GEFI ENGINEERING

What GEFI ENGINEERING does

GEFI INGENIERIE is a French multidisciplinary building engineering consultancy (Bureau d'Études Techniques) founded in 1982 and headquartered in La Chapelle-sur-Erdre, near Nantes. The firm operates five integrated expertise poles — Génie Climatique (HVAC and renewable-energy systems), Génie Électrique (strong/weak current, lighting, photovoltaics), Cuisines & Process (professional kitchen engineering including central kitchens up to 6,000 meals/day and RABC-compliant laundry design for healthcare/senior living), SSI fire safety, and Environnement/HQE — coordinated through BIM/REVIT 3D modeling and dynamic thermal simulation (STD). Its underlying technology stack centers on REVIT-based BIM for multi-trade coordination, regulatory-grade thermal modeling against RT 2012, RE 2020, and Décret tertiaire trajectories, and domain-specific process design for collective catering and healthcare lingerie workflows. Deliverables are produced under three engagement modes: Étude & Conseil (advisory studies), Maîtrise d'Œuvre (works supervision), and Assistance à Maîtrise d'Ouvrage (AMO, owner-assistance).

The firm generates revenue through project-based, fee-for-service engineering contracts billed against publicly tendered construction mandates. Pricing is negotiated on a project-by-project basis with no published rate card, and engagements are secured primarily through French public procurement (marchés publics) and direct commissions from architectural firms. Its go-to-market is enterprise field sales targeting municipalities, departments, regions, social landlords, EHPAD operators, and educational institutions in the Grand Ouest and Île-de-France regions for fluids engineering, with national coverage for kitchen engineering following its January 2020 membership in Resto France Experts. The customer base spans more than 40 named institutional clients and includes recurring private-sector engagements (Doctolib regional HQ at Halle Bergeron, OGEC schools, Groupe Réside Études), supported by long-standing relationships with regional architecture firms (A PROPOS, LOUVEL, Didier Le Borgne & Associés, OS-Architectes, Collectif FARO). The company is privately held, founder/management-owned with no disclosed external funding, parent company, or M&A activity over its 40+ year history.

Name

GEFI ENGINEERING

Legal name

GEFI INGENIERIE

Website

https://gefi-ingenierie.fr

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

GEFI Ingénierie is a French multidisciplinary engineering consultancy founded in 1982, serving public institutions, healthcare, and educational clients with HVAC, electrical, kitchen-process, fire-safety, and environmental-quality engineering under BIM/REVIT methodology across Western France and Île-de-France.

Ownership category

akta.pro rank

Product category

Building Engineering Services

NAICS

Architectural, Engineering, and Related Services (5413), Management, Scientific, and Technical Consulting Services (5416)

akta.pro primary industry

Refrigeration Systems Maintenance (Commercial/Industrial) (BPABACAI)

akta.pro secondary industries

Security, Safety & Fire/Life Safety Management (BPABAAAE), HVAC & Industrial Ventilation (Chillers, AHUs, Exhaust, Filtration) (EUAEAFAE)

Keywords

• Building engineering consultancy
• HVAC engineering services
• Professional kitchen design
• Fire safety engineering
• Energy performance consulting

Headquarters

HQ city

La Chapelle-sur-erdre

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Engineering Consulting and Design Services: GEFI INGENIERIE generates revenue through fee-based engineering consulting and design services for construction projects. Services include AMO (Assistance à Maîtrise d'Ouvrage), maîtrise d'œuvre (general contracting supervision), and technical consulting across the firm's five expertise poles (HVAC, electrical, kitchen, fire safety, environmental quality). Revenue is project-based, tied to construction contracts, and varies by project scale and scope.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

GEFI INGENIERIE is a multidisciplinary building engineering consultancy that designs HVAC/thermal systems, electrical installations, professional kitchens, fire safety systems (SSI), and environmental-quality (HQE) solutions for public and institutional buildings in France. The firm delivers its services through three mission modes — Études & Conseil (study and consulting), Maîtrise d'Œuvre (works supervision), and Assistance à Maîtrise d'Ouvrage (AMO, project owner assistance) — across six expertise poles. It specializes in collective catering facility engineering (central kitchens, school cafeterias, EHPAD kitchens, culinary schools) and energy-efficient building envelopes compliant with French thermal regulations (RT 2012, RE 2020, BBC, HQE).

Product overview

GEFI Ingénierie is a multi-disciplinary engineering consultancy firm based in Nantes, France, offering integrated engineering services for buildings. The company operates across six interconnected poles: Génie Climatique (HVAC/thermal), Génie Électrique (electrical systems), Cuisines & Process (professional kitchen engineering), SSI (fire safety), BIM (digital modeling), and Environnement/HQE (environmental quality). Their core offering combines Fluides (fluid systems), Thermique (thermal/energy), and Cuisine engineering, complemented by project management services (AMO and Maîtrise d'Œuvre). The firm serves public and private clients across Western France and Paris region, specializing in sustainable building design, energy efficiency, and complex catering facilities.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Designed kitchen facilities producing up to 6,000 meals per day (Ermont central kitchen, liaison chaude)
• +5 more outcomes

Named customers29 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

18 partnerships are on record, tiered core, key and minor.

• Resto France Experts (RFE)coreStrategic or Co-development Partner · 1 January 2020GEFI INGENIERIE became a member of Resto France Experts (RFE) in January 2020. RFE is a national groupement of collective catering experts including AMO consultants, program managers, engineers, trainers, hygiene specialists, manufacturers (cooking, refrigeration, laundry equipment), and financial/juridical experts. RFE promotes excellence, innovation, and skills development in collective catering engineering at national and international levels. GEFI's kitchen engineering expertise is formally recognized within this professional network.
• OS-ArchitecteskeyStrategic or Co-development PartnerOS-Architectes served as the lead architect on the Lycée E. Ronceray restructuring project in Bezons (42,800 m²), with GEFI INGENIERIE acting as kitchen engineering consultant. The partnership delivered a complex multi-phase project in an occupied site for the Région Île-de-France.
• A PROPOS ArchitecturekeyStrategic or Co-development PartnerA PROPOS Architecture is a recurring architectural partner for GEFI INGENIERIE on multiple projects including the Ferrandi Rennes campus, Lycée La Mennais extension in Guérande, Collège Françoise Elie in Bréal-sous-Montfort, and the Restaurant de la Solidarité in La Chapelle-sur-Erdre. GEFI delivered multidisciplinary engineering (HVAC, electrical, kitchen, fire safety) in close coordination with this architectural firm.
• Entreprise RousseaukeyImplementation/ SI/ Consulting PartnerEntreprise Rousseau (wood construction specialist) was the lead general contractor on the EHPAD St-Hilaire-St-Florent project, working alongside GEFI INGENIERIE (multidisciplinary engineering) and SABH architects in a design-build consortium awarded through competitive tender.
• SABH (Studio d'Architecture B. Huet)keyStrategic or Co-development PartnerSABH architects served as lead architects on the EHPAD St-Hilaire-St-Florent project (84 beds, wood-frame construction, €7.7M HT), in partnership with GEFI INGENIERIE (multidisciplinary engineering) and Rousseau Construction Bois in a design-build team.
• Quartus (Developer)keyImplementation/ SI/ Consulting PartnerQuartus is the real estate developer behind the Halle Bergeron mixed-use project in Nantes (Île de Nantes), for which GEFI INGENIERIE provided full engineering services. Doctolib signed a lease for the entire 7,800 m² office component of the development.
• Samoa (Société d'Administration et de Maitrise d'Ouvrage de l'Agglomération)minorImplementation/ SI/ Consulting PartnerSamoa is the development management entity for the Halle Bergeron project in the Île de Nantes district, collaborating with Quartus and Alexandre Chemetoff architect on the mixed-use reconversion, with GEFI INGENIERIE providing engineering services.
• Alexandre Chemetoff (Architecture Firm)keyStrategic or Co-development PartnerAlexandre Chemetoff served as the lead architect on the Halle Bergeron reconversion project in Nantes, with GEFI INGENIERIE providing all engineering services for the 39-unit housing, 7,800 m² office, and retail mixed-use development.
• CBRE FranceminorImplementation/ SI/ Consulting PartnerCBRE France engaged GEFI INGENIERIE for the technical follow-up of Doctolib's interior fit-out works at Halle Bergeron (offices and inter-company restaurant RIE), demonstrating an ongoing client relationship extended through a major real estate services firm.
• Atelier DULIEUminorStrategic or Co-development PartnerAtelier DULIEU is an architectural firm that partnered with GEFI INGENIERIE on a BIM-based 33-unit housing project in Les Sorinières, with GEFI delivering technical systems engineering under REVIT/BIM methodology.
• MXC ArchitectesminorStrategic or Co-development PartnerMXC Architectes partnered with GEFI INGENIERIE on multiple BIM-managed collective housing projects (new construction and renovation) in locations including Les Herbiers and Savenay, and on the 204-unit social housing renovation in St Nazaire.
• Jousselin (Construction Company)minorImplementation/ SI/ Consulting PartnerJousselin was the lead general contractor for the 57-unit collective housing BIM project in Trélazé (49), working with GEFI INGENIERIE and DCL Architectes in Angers as a tender-winning consortium.
• DCL ArchitectesminorStrategic or Co-development PartnerDCL Architectes based in Angers partnered with GEFI INGENIERIE and Jousselin on the 57-unit BIM collective housing project in Trélazé, selected as winners of a competitive tender.
• Yvon Le Brigant & François Trouvé (Architecture)minorStrategic or Co-development PartnerArchitects Yvon Le Brigant and François Trouvé partnered with GEFI INGENIERIE on the school restaurant project at Collège St Ouen Lasalle in Plouay (56), completed in 2019.
• Collectif FARO (Architecture)minorStrategic or Co-development PartnerCollectif FARO architects in Nantes partnered with GEFI INGENIERIE on the new wood-and-earthen-construction school in Baulon, a HQE-certified sustainable building project with participatory earth-building components.
• LOUVEL ArchitecturekeyStrategic or Co-development PartnerLOUVEL Architecture is a recurring architectural partner on multiple GEFI projects including Malville school restaurant/festive hall, Collège Françoise Elie in Bréal-sous-Montfort, Lycée Dupuy de Lôme restructuring, and the Ferrandi Rennes campus. GEFI provides multidisciplinary engineering in close coordination with LOUVEL's design team.
• Didier Le Borgne & AssociéskeyStrategic or Co-development PartnerDidier Le Borgne & Associés architects in Nantes partnered with GEFI INGENIERIE on the bioclimatic sports hall in Betton (1,820 m²), featuring the parieto-dynamic wall and 400 m² photovoltaic array, and on the Le Gentieg multipurpose hall in Janzé.
• AXENS (Architecture)minorStrategic or Co-development PartnerAXENS architects partnered with GEFI INGENIERIE on the extension project for Lycée La Mennais in Guérande, where GEFI delivered all fluid/thermal engineering (HVAC, plumbing, electrical) for the new dining, serving, and support areas.

Scale indicators4 records

Expansion highlights5 records

Direct peers

• Berim: Berim is a French engineering consultancy offering building energy, MEP, and environmental engineering services to public and private clients. The closest direct peer to GEFI in terms of boutique-scale multi-disciplinary engineering, public-sector focus, and BIM-led delivery — though Berim is more concentrated in Île-de-France.

Broad incumbents

• Ginger Group: Ginger is a French engineering group specializing in environment, energy, and infrastructure engineering. Particularly comparable to GEFI on environmental quality (HQE), energy audit, and Décret tertiaire compliance work — a regulatory space that overlaps heavily with GEFI's environmental pole.
• TPF Ingénierie: TPF Ingénierie is a mid-sized French engineering consultancy providing building, infrastructure, and energy engineering services. Comparable to GEFI as a similarly-positioned multi-disciplinary BET with public-sector client base, though at slightly larger scale and broader geographic coverage.
• TPF Utilities (formerly TPF): TPF is a European engineering group with operations in France covering building services, infrastructure, and utilities-related engineering. Comparable to GEFI on MEP and building engineering mandates in the public sector, competing for similar municipal and regional clients.
• Artelia: Artelia is a major French-headquartered engineering and project management consultancy with deep MEP and building engineering capabilities across Western Europe. Overlaps GEFI on HVAC, electrical, and environmental consulting for public/institutional buildings, but operates at substantially larger scale with international footprint.
• Ingérop: Ingérop is a large French multi-disciplinary engineering group with MEP, structural, and infrastructure capabilities serving public and private clients. Directly comparable to GEFI on building engineering services (HVAC, electrical, fire safety, environmental quality) but at significantly larger scale and broader national reach.
• Egis: Egis is a major French engineering group (Caisse des Dépôts subsidiary) covering building, infrastructure, and urban engineering. Comparable to GEFI in MEP/thermal engineering for public buildings, but with substantially larger scale, national bidding capacity, and broader service portfolio that competes for the same institutional clients.
• Setec: Setec is a French multi-disciplinary engineering group with strong building, infrastructure, and project management practices. Comparable to GEFI in MEP-related building engineering while competing for the same public-sector tenders; relevant for benchmarking on energy and environmental engineering methodology.
• Assystem: Assystem is a French international engineering and digital services consultancy with building, energy, and infrastructure practices. Overlaps GEFI on energy/environmental engineering for institutional buildings, but at substantially larger scale and different end-market mix (more energy/nuclear, less catering/healthcare).

Others

• SYSTRA: SYSTRA is a French-headquartered international engineering group focused primarily on transportation and urban infrastructure. Not a direct competitor to GEFI, but shares the same public-sector, French-engineering-roots DNA and competes for engineering talent and architect partnerships in the same institutional ecosystem.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/gefi-ingenierie

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GEFI ENGINEERING