Adret

What Adret does

Adret Ingénieurs Associés is a privately held French technical building engineering consultancy (bureau d'études techniques) founded in 1981 and headquartered in La Seyne-sur-Mer, France. The firm delivers three core service lines — climate engineering (HVAC, plumbing, clean rooms, medical gases), electrical engineering (power, security, fire safety, photovoltaic), and environmental quality (sustainable building certifications including BREEAM, HQE, BDM, BDO, QDM, BiodiverCity, BBCA, E+C-) — supported by BIM management on the REVIT platform and multidisciplinary synthesis coordination. Projects are delivered under Maîtrise d'Œuvre (MŒ) and Assistance à Maîtrise d'Ouvrage (AMO) frameworks for both rehabilitation and new construction.

The firm operates from five offices across southeastern France (La Seyne-sur-Mer, Marseille, Embrun, Grenoble, and Vaison-la-Romaine) and holds OPQIBI and RGE qualifications across thermal studies, energy audits, biomass, solar PV, geothermal, life-cycle analysis, and safety fire systems. Its customer base is dominated by French public-sector clients — municipalities, regional governments, public hospitals, EHPADs, social-housing operators, and educational authorities — with a smaller roster of enterprise clients in financial services, transportation, and healthcare. Co-managing partners Richard Mainguenaud, Jean-Pascal Roche, and Benoît Maraval lead the firm, and Jean-Pascal Roche additionally serves as president of the professional association ICO (Ingénierie du Confort Objectif 2050).

Adret is structured as a SARL with €23,800 of share capital and reports roughly 55-60 employees with FY2024 revenue of approximately €5.25M and FY2025 projected revenue of €5.27M. The business model is project-based professional services: revenue is generated through custom engineering engagements priced on scope and complexity, with no disclosed productized pricing, no external institutional investment, and no M&A history. Distribution is direct B2B, supplemented by visibility through industry associations and a LinkedIn presence.

Name

Adret

Legal name

Adret Ingénieurs Associés

Website

https://adret.net

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

51–100 employees

Short description

Adret is a privately held French building engineering consultancy, founded in 1981, delivering climate, electrical, and environmental quality engineering plus BIM management to public-sector and enterprise clients across southeastern France through five regional offices and ~60 staff.

Ownership category

akta.pro rank

Headquarters

HQ city

La Seyne-sur-mer

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consultancy Services: Professional engineering services for construction and rehabilitation projects including climate engineering, electrical engineering, and environmental quality consulting. Revenue generated through project-based engagements as MOE (maître d'œuvre) and AMO (assistance à maîtrise d'ouvrage).

Go-to-market motion2 records

Distribution channels1 record

Marketing channels3 records

Core offering

Adret is a technical engineering consultancy (bureau d'études techniques) providing integrated engineering services for building construction and renovation projects. Its three core pillars are climate engineering (HVAC, plumbing, cleanrooms, medical gases), electrical engineering (power, fire safety, SSI, security, photovoltaics), and environmental quality (sustainable design and certifications). These are supported by BIM management and 3D synthesis coordination. The firm delivers through Maîtrise d'Œuvre (MOE) and Assistance à Maîtrise d'Ouvrage (AMO) roles for public and private sector clients.

Product overview

Adret is a technical engineering consultancy (bureau d'études techniques) providing integrated engineering services for building construction and renovation projects. The company operates three core service pillars: climate engineering (HVAC, plumbing), electrical engineering (power, security systems), and environmental quality. These are supported by BIM management and synthesis services, and environmental certification advisory. The company delivers projects through Maîtrise d'Œuvre (MŒ) and Assistance à Maîtrise d'Ouvrage (AMO) roles for rehabilitation and new construction projects across regional and national scales.

Differentiator

Problem solved

Functional benefit

Products and services

• Ingénierie climatique et plomberie
• Ingénierie électrique et SSI
• Qualité Environnementale
• BIM Management et Synthèse
• Certifications environnementales
• Maîtrise d'Œuvre (MŒ)
• Assistance à Maîtrise d'Ouvrage (AMO)

Quantifiable outcome

• Multiple projects achieving BDM Or/Argent certifications, BDO level recognition, QDM medals
• +1 more outcomes

Named customers12 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• ICO (Ingénierie du Confort Objectif 2050)coreStrategic or Co-development PartnerICO is a professional association bringing together engineering, industrial, installer, operator, organizational and media professionals. Jean-Pascal Roche, Adret's managing partner, serves as president of ICO. The association promotes collaboration, expertise exchange, conferences, training and working groups on energy transition, digitalization and multidisciplinary approaches.
• EnviroBAT-MéditerranéecoreStrategic or Co-development PartnerRegional professional association for sustainable building in the Mediterranean region. Adret participates in knowledge sharing and develops common practices in sustainability, innovation and professional ethics.
• EnviroBAT-OccitaniecoreStrategic or Co-development PartnerRegional professional association for sustainable building in Occitanie. Adret participates in knowledge sharing and develops common practices in sustainability, innovation and professional ethics.
• ACADminorStrategic or Co-development PartnerProfessional association for building and construction professionals. Adret participates in association activities.
• AICVFminorStrategic or Co-development PartnerProfessional association for HVAC and refrigeration professionals. Adret participates in association activities.
• EnercoopminorOthersAdret purchases 100% renewable electricity from Enercoop, demonstrating commitment to environmental values.

Scale indicators7 records

Recent moves11 records

Expansion highlights4 records

Broad incumbents

• Egis: Global French-headquartered engineering and consulting group operating across buildings, infrastructure, and transport. Overlaps with Adret in building engineering and environmental quality, but as part of a much larger, more diversified portfolio.
• WSP in France (formerly WSP / Parsons Brinckerhoff): Global engineering consultancy with a French building and environmental engineering practice. Overlaps with Adret in building engineering and environmental certification work, but operates from a much larger global platform with broader service breadth.

Direct peers

• Oteis: French engineering consultancy specializing in building, infrastructure, and energy transition projects. Closely comparable to Adret in climate engineering, environmental quality, and regional project delivery for public and private clients.
• Ingérop: Major French engineering group offering building engineering, infrastructure, and project management across France. Directly comparable to Adret in climate/electrical/environmental engineering services but at significantly larger national scale.
• Alterea: French engineering consultancy focused on energy renovation and sustainable building, with strong environmental certification expertise. Closely comparable to Adret's environmental quality and HVAC/electrical engineering offering, particularly in retrofit and RE2020-aligned mandates.
• setec: French engineering group providing building, infrastructure, and industrial engineering services. Comparable to Adret in technical building engineering and project delivery, with deeper multidisciplinary capability and national footprint.
• AIA Life Designers (formerly AIA Ingénierie): French architectural and engineering group with strong healthcare, education, and public-sector building practices. Comparable to Adret in multidisciplinary building engineering and project delivery for public-sector clients, but at larger scale and broader geographic reach.
• Artelia: Leading French engineering and project management consultancy with strong building, energy, and environmental practices. Comparable to Adret in multidisciplinary building engineering and sustainability certification work, though with broader international footprint.

Emerging players

• AMOES: Smaller French environmental and energy engineering consultancy focused on sustainable buildings and AMO/environmental quality missions. Comparable to Adret's environmental quality and energy efficiency offerings, with similar AMO delivery model for public-sector clients.
• Tribu Energie: French environmental engineering firm specializing in energy performance, environmental certifications (HQE, BREEAM), and AMO for sustainable buildings. Comparable to Adret's environmental quality and certification accompaniment services, though smaller in headcount and scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/bet-adret

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Adret