What Atelux does

Atelux Ingénierie SAS, founded in 2002 by Bruno Bourdonnais and headquartered in Conflans-Sainte-Honorine, France, is a multidisciplinary technical engineering consultancy (bureau d'études techniques pluridisciplinaires) focused on new construction and multi-sector rehabilitation. The firm operates with 1-10 employees as a privately held SAS (share capital €16,000), under current President Patrick NGO, and has no disclosed external equity backing. Service offerings span the full maître d'œuvre workflow: HVAC and aerodynamics engineering, renewable energy feasibility, plumbing, electrical (courants forts and faibles), thermal studies (RT compliance, dynamic simulation), construction economics, fire safety (SSI) coordination per NFS 61-931, and kitchen equipment studies. Technical differentiation rests on accumulated expertise in sustainable construction certifications (HQE, BREEAM, Effinergie) and bio-sourced materials, supported by dedicated fire safety and dynamic thermal simulation capabilities.

The firm's project portfolio spans public-sector commissions (schools, daycare facilities, community centers, university buildings, national sports infrastructure) and private-sector work (offices, coworking spaces, housing developments, golf facilities, an Elizabethan theater at Château d'Hardelot). Individual project construction values disclosed range from approximately €350K to €12M (La Ferme des Vieilles Chapelles community center), with several jobs in the €1-3M range. Atelux participates as part of multi-firm consortia alongside recurring architectural partners (B+C Architectes, B&N Architecture, DCA Architecte) and specialty engineering firms (LM Ingénieur, Make ingénierie, Gamba acoustics, Charcoalblue, Score 2D sustainable development). Operational reach documented across Île-de-France and project-based extensions into Hauts-de-France (department 02), Grand Est (department 62), Centre-Val de Loire (departments 36, 37), and other regions.

Commercially, Atelux operates on project-based, quote-driven pricing, with fees structured as a percentage of total construction cost or fixed fees for specific deliverables (thermal notes, energy audits, coordination SSI). The go-to-market is enterprise field sales through direct client engagement with property developers, municipalities, and public institutions, supplemented by referral flow from architectural partnerships and public procurement processes. Marketing presence is light: a French-language professional website (atelux.fr) showcasing the project portfolio and downloadable brochure, with primary new business driven by reputation and architectural firm networks rather than active demand generation.

Name

Atelux

Legal name

ATELUX INGÉNIERIE SAS

Website

https://atelux.fr

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

1–10 employees

Short description

Atelux Ingénierie SAS is a French multidisciplinary technical engineering consultancy (bureau d'études techniques pluridisciplinaires), founded in 2002 and based in Conflans-Sainte-Honorine, serving public and private sector construction and rehabilitation projects with HVAC, electrical, plumbing, thermal, fire safety coordination, and construction economics services.

Ownership category

akta.pro rank

Headquarters

HQ city

Conflans-sainte-honorine

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, Infrastructure

Revenue model

1. Engineering Consultancy Services: Atelux generates revenue through professional engineering and technical consultancy services for construction projects. Services are delivered across all project phases from initial conception through construction execution and reception. Revenue is project-based, typically calculated as a percentage of total construction costs or through fixed-fee engagements for specific technical studies.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Atelux Ingénierie SAS is a multidisciplinary technical engineering consultancy (bureau d'études techniques pluridisciplinaires) that delivers HVAC/climate engineering, electrical, plumbing, thermal studies, renewable energy, SSI fire safety coordination, construction economics, and kitchen equipment studies for new construction and multi-sector rehabilitation projects. The firm serves both public and private sector clients across construction, tertiary, and industrial projects, supporting them from initial conception through construction execution and reception under TCE + Fluides mission scopes.

Product overview

Atelux Ingénierie SAS is a multidisciplinary engineering consultancy firm offering technical consulting services for new construction and multi-sector rehabilitation projects. The firm provides a comprehensive suite of engineering services including project management (maîtrise d'œuvre), HVAC/climate engineering (génie climatique/aéraulique), renewable energy management, plumbing, electrical engineering, thermal studies, construction economics, fire safety coordination (coordination SSI), and kitchen equipment studies. These services are delivered as consulting offerings rather than packaged software products, serving both public and private sector clients on equipment, tertiary, and industrial construction projects. The company does not offer discrete product lines but rather professional engineering services delivered by an experienced team from project conception through realization.

Differentiator

Problem solved

Functional benefit

Products and services

• Project Management (Mission de maîtrise d'œuvre) End-to-end project management (maîtrise d'œuvre) covering all phases from initial cost evaluation, owner assistance (offer analysis and report, contractor negotiations), through construction direction (direction des travaux), to reception operations assistance. Targeted at project owners, municipalities, and developers building public, tertiary, or industrial facilities.
• Climate and Aerodynamic Engineering (Génie climatique / Aéraulique) Design and execution studies for HVAC and climate installations (CVC networks), including energy diagnostics, regulatory thermal studies (RT), thermal optimization, dynamic thermal and energy simulation, aerodynamic studies, and CVC network design and diagnostics. Targeted at public and private construction and rehabilitation projects.
• Renewable Energy Management (Gestion des énergies renouvelables) Advisory and study services for renewable energy system integration within construction projects to meet thermal regulation (RT 2012) compliance, including feasibility studies, energy audits, implementation cost estimates, consumption cost estimates, and maintenance cost estimates. Targeted at construction project owners needing compliance with thermal regulations.
• Plumbing Engineering (Plomberie) Design and execution studies for plumbing installations including hot and cold water networks, sanitation networks, sanitary equipment definition, gas distribution networks, and fire extinguishing systems (RIA, Sprinkler). Targeted at construction and rehabilitation projects in the public, tertiary, and industrial sectors.
• Electrical Engineering (Génie électrique) Design and execution studies for electrical installations covering high-current systems (energy, distribution, lighting, home automation) and low-current systems (fire safety system/SSI, intrusion alarm, video surveillance, access control, GTC/GTB building management, computer/telephone networks). Targeted at construction and rehabilitation projects across all sectors.
• Thermal Studies (Études thermiques) Calculation of thermal coefficients and losses, thermal recommendations for materials and heating/ventilation/HVAC equipment, preparation of thermal notes, and preparation of the building permit submission attestation (RT compliance). Targeted at construction project owners requiring regulatory thermal compliance.
• Construction Economics (Économie de la construction) Determination of building project costs across all design stages, project optimization, preparation of written specifications for second works (second œuvre), offer analysis, market agreement, and financial tracking of construction work and contractor positions. Targeted at construction project owners, developers, and contractors.
• Fire Safety Coordination (Mission de coordination SSI) Fire safety system (Système de Sécurité Incendie / SSI) coordination in compliance with NFS 61-931 standards, covering design phase (functional specifications), execution phase (SSI meetings, plan review, equipment compliance certificates), and reception phase (testing and SSI identity dossier). Targeted at construction projects requiring fire safety compliance.
• Kitchen Equipment Studies (Équipements cuisine) Design and execution studies for kitchen equipment installations in construction and rehabilitation projects, particularly for collective catering facilities, schools, daycare, and hospitality venues.

Named customers3 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• DCA ArchitectecoreStrategic or Co-development PartnerArchitectural firm collaborating with Atelux on construction projects. DCA served as lead architect on the Fabrique A renovation project in Argenteuil (€3.09M).
• B+C ArchitectescoreStrategic or Co-development PartnerRegular architectural partner collaborating on multiple projects including Les Horizons offices in Clichy (€3.27M), Crèche Jules Guesde, and 108-logement development in Tremblay-en-France (€7.55M).
• LM IngénieurcoreTechnology or IntegrationStructural and thermal engineering partner collaborating on multiple projects including offices in Clichy and Fontainebleau, and housing developments. Provides structural calculations and thermal engineering.
• NOS ArchitecteminorStrategic or Co-development PartnerArchitectural firm collaborated on the Golf de Guyancourt extension project (€2.5M).
• B&N ArchitecturecoreStrategic or Co-development PartnerArchitectural partner on multiple public sector projects including Ecole Marianne (€10.05M, HQE exceptional level) and Groupe scolaire Tournesol (€1.87M).
• 3a2uminorStrategic or Co-development PartnerArchitecture firm collaborated on the Groupe scolaire 9 classes project (€2.4M) in department 02.
• ForallminorStrategic or Co-development PartnerArchitecture firm partnered on restaurant conversion project in department 37 (€515K) featuring geothermal heating.
• DG ArchitectureminorStrategic or Co-development PartnerArchitecture firm collaborated on office building transformation project in Fontainebleau (€1.44M).
• AO2A ArchitectesminorStrategic or Co-development PartnerArchitecture firm partnered on covered tennis and club house project in L'Etang-la-Ville (€1.2M).
• Atelier Jean GouzyminorStrategic or Co-development PartnerArchitect on Dojo Kyudojo National project in Noisiel (€350K).
• North by Nortwest ArchitectesminorStrategic or Co-development PartnerArchitecture firm partnered on HQE-certified apartment building project on Rue Myrha, Paris 18e (€1.49M).
• Studio Andrew ToddminorStrategic or Co-development PartnerInternational architecture firm leading the Elizabethan theater construction project at Château d'Hardelot (€3.5M).

Scale indicators3 records

Recent moves5 records

Expansion highlights3 records

Direct peers

• Ginger: French engineering group with practices in building engineering, energy, and environmental consulting. Comparable BET services for French public and private construction, though operating at a larger group scale than Atelux.
• Ingérop: Independent French engineering consultancy providing building engineering, energy, environmental, and infrastructure services for construction projects. Comparable BET offering and French public/private client focus to Atelux.
• setec: French engineering consultancy delivering building engineering (BET), structural, energy, and project management services to public and private clients. Directly comparable service portfolio to Atelux, with a similar multi-disciplinary French BET positioning.
• Algoé: French engineering and project-management consultancy serving public and private construction and infrastructure clients. Comparable BET/engineering position with multi-disciplinary service offering similar to Atelux's.
• Egis: Large French engineering firm providing building engineering, energy, and infrastructure services including HVAC and sustainability work for public and private construction. Comparable core services (bureau d'études techniques) but with national and international reach.
• Verdi Ingénierie: Mid-size French BET specializing in building engineering, energy efficiency, environmental certifications, and sustainable construction. Closely comparable niche positioning to Atelux, with similar service mix and sustainability-certification emphasis.
• Elcimaï: French multi-disciplinary engineering and consulting firm providing building engineering, energy, and environmental services. Similar BET service profile and French client base to Atelux.
• Artelia: Major French multi-disciplinary engineering group offering building, energy, HVAC, electrical, and project management services. Directly comparable as a BET/engineering consultancy serving French public and private construction with a similar service mix to Atelux, but at much larger scale.

Broad incumbents

• Bureau Veritas: Global testing, inspection and certification firm with significant French construction-engineering and HQE/BREEAM-adjacent services. Overlaps with Atelux in building-compliance and sustainability advisory but operates as a much broader incumbent rather than a specialized BET.
• Socotec: French testing, inspection, and engineering services group with construction-engineering offerings including building performance and energy services. Comparable overlap with Atelux's compliance and SSI work, but at substantially greater scale and breadth.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks7 records

Key highlights6 records

Customer concentration

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 Atelux