Wor Ingenierie

What Wor Ingenierie does

WOR Ingénierie is a French multidisciplinary engineering consultancy founded in 1991, registered as an SARL with €100,000 capital and headquartered in Mont-Saint-Aignan with a secondary office in Bretignolles-sur-Mer. It delivers technical engineering studies (bureau d'études) and project management services across six domains: energy and environment, electricity, HVAC and plumbing, roads and utilities networks (VRD), all-trades engineering and construction economics (BET TCE), and professional kitchen design. The firm uses Building Information Modeling (BIM) methodology built on Autodesk Revit to create digital mockups that coordinate architectural, structural, and MEP disciplines from preliminary studies (APS) through as-built documentation (DOE), with IFC-format interoperability for cross-tool data exchange.

The business model is project-based fee-for-service: revenues are generated through technical studies priced as a percentage of construction cost or fixed fees per study phase, billed under multi-year contracts. Public-sector work is secured via competitive bidding (concours), while private work is commissioned directly by project owners. Primary customer segments are social housing providers (bailleurs sociaux), public-sector entities (municipalities, departments, OPHs), real estate developers, and architecture firms. The firm holds six sector certifications (OPQIBI, RGE, NF Habitat HQE, BBCA, Bâtiments Durables Franciliens, EFFINERGIE) that gate public procurement eligibility, and operates exclusively within France with primary concentration in Île-de-France and Normandy.

In March 2025, leadership transitioned from Sylvain MANSOIS (17 years as gérant) to Cyrille BAILLEUL as President, with MANSOIS retained as technical referent. The firm subsequently launched two wholly-owned subsidiaries under the CB Invest group umbrella: Effectio Ingénierie for EXE execution-phase services and Euthénio Ingénierie for construction economics, broadening the integrated offering from design through project completion.

Name

Wor Ingenierie

Legal name

WOR INGENIERIE

Website

https://bet-wor.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

11–50 employees

Short description

WOR Ingénierie is a French multidisciplinary engineering consultancy, founded in 1991, that delivers BIM-enabled technical studies (energy, electricity, HVAC, VRD, kitchens) for social housing providers, public-sector clients, and developers across France.

Ownership category

akta.pro rank

Product category

Building Engineering Services

NAICS

Architectural, Engineering, and Related Services (5413), Environmental Consulting Services (54162), Management, Scientific, and Technical Consulting Services (5416)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Energy & Sustainability Management (Energy Audits/Optimization/Carbon & ESG Programs) (IMAIAAAM)

akta.pro secondary industry

Air Quality & Emissions Management (BPAHAJAI)

Keywords

• Building engineering services
• BIM engineering consulting
• HVAC and plumbing studies
• Energy performance consulting
• Construction project management

Headquarters

HQ city

Mont-saint-aignan

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Studies and Consulting Services: The company generates revenue through fees for technical engineering studies across multiple disciplines (energy, electricity, CVC, plumbing, VRD, professional kitchens). Revenue is project-based, calculated as a percentage of construction costs or fixed fees for specific study phases (APS, APD, DCE, DET). The firm serves both public procurement (concours/bidding) and private direct commissions.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Wor Ingénierie is a multidisciplinary building engineering consultancy delivering technical studies (energy/environment, electrical, CVC/plumbing, VRD, all-trade TCE coordination and professional kitchen design) using a BIM methodology (Autodesk Revit, IFC) and providing maîtrise d'œuvre with construction monitoring across feasibility, design, tender, execution and as-built phases. It serves project owners, social-housing landlords, public authorities, architects and individuals nationwide from five agencies across southern France.

Product overview

WOR INGÉNIERIE is a multi-disciplinary engineering consultancy offering a comprehensive suite of technical engineering services for construction and renovation projects. The company operates two main service pillars: (1) Bureau d'études & BIM for technical studies and Building Information Modeling, and (2) Maîtrise d'œuvre et suivi de chantier for project management and construction monitoring. These core offerings are supported by six specialized engineering domains: Énergie et environnement (energy and environmental engineering), Électricité (electrical engineering), CVC et plomberie (HVAC and plumbing), VRD (roads and utilities infrastructure), BET TCE (all-trades engineering and construction economics), and Cuisine professionnelle (professional kitchen design). The company also operates two subsidiary entities—Effectio Ingénierie (specializing in execution phase services) and Euthénio Ingénierie (specializing in construction economics)—providing an integrated offering from design through execution.

Differentiator

Problem solved

Functional benefit

Products and services

• Bureau d'études & BIM (Engineering studies and BIM) End-to-end multi-trade engineering studies (energy/environment, electrical, CVC/plumbing, VRD, TCE) produced under a BIM methodology using Autodesk Revit and IFC interoperability. Serves project owners (bailleurs sociaux, collectivités, promoteurs), architects, other BETs and private individuals engaged in construction or renovation. Delivered across feasibility, design, tender and execution phases.
• Maîtrise d'œuvre et suivi de chantier (Project management and construction monitoring) Assumes responsibility for construction execution, including OPC (ordonnancement, pilotage, coordination) and on-site suivi de chantier through the as-built phase. Built on the firm's BIM deliverables and multi-trade engineering teams. Targeted at the same project owners and architect-led programs using the engineering studies service.
• Énergie et environnement (Energy and environment engineering studies) Specialised engineering studies covering energy performance, environmental impact and related regulatory compliance calculations (using the 3CL method, SOLIUS and Perrenoud). Supports renovations and new builds for housing landlords, public authorities, developers and private clients.
• Électricité (Electrical engineering studies) Electrical engineering studies for residential, tertiary and public buildings, integrated with the firm's BIM/Revit modelling environment. Delivered as a standalone service or combined with other trades under a TCE engagement.
• CVC et plomberie (HVAC and plumbing engineering studies) HVAC (chauffage, ventilation, climatisation) and plumbing engineering studies with modelling and thermal calculation capability, integrated into BIM/Revit deliverables. Used in combination with energy and electrical studies for whole-project TCE engagements.
• VRD (Roads and utilities / Voirie et réseaux divers) Roads and utilities (voirie et réseaux divers) engineering studies covering external works, network routing and access for new-build and renovation programs. Used as a stand-alone discipline or combined with the firm's BET TCE engagements.
• BET TCE (All-trade engineering studies) Cross-disciplinary engineering studies combining every building trade (energy/environment, electrical, CVC/plumbing, VRD, structure-adjacent coordination) into one BET engagement. Provides clients with a single technical counterpart over all phases.
• Cuisine professionnelle (Professional kitchen design) Specialised engineering design for professional/catering kitchens, covering HVAC, plumbing and electrical layouts within a BIM environment. Targeted at collective catering operators and developers of food-service spaces inside residential, tertiary and public projects.

Named customers17 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

24 partnerships are on record, tiered core and supporting.

• Graal ArchitecturecoreStrategic or Co-development PartnerArchitecture firm collaboration on housing projects including the 15-unit Bondy project for Immobilière 3F. WOR provides BET fluids, thermal, and VRD engineering while Graal provides architectural design.
• Atelier de Saint GeorgescoreStrategic or Co-development PartnerLong-standing collaboration with architecture firm on numerous public sector projects including schools, sports facilities, and municipal buildings across Normandy and Île-de-France.
• Chamade ArchitecturecoreStrategic or Co-development PartnerActive partnership on rehabilitation and new construction projects including social housing and public buildings. Multiple recent projects including Savigny-sur-Orge housing and Levallois rehabilitation.
• I+A Laboratoire des StructuressupportingTechnology or IntegrationStructural engineering partner providing BET Structure services on joint project teams for construction and rehabilitation projects.
• Eco+ConstruiresupportingTechnology or IntegrationEconomics partner providing BET Économie services on housing projects.
• AKOUSTIK Ingénierie & ConseilssupportingTechnology or IntegrationAcoustic engineering partner providing specialized acoustics studies on joint project teams.
• BI IngénieriesupportingTechnology or IntegrationStructural engineering partner on the Bondy passerelle project.
• CB Invest (Groupe)coreStrategic or Co-development PartnerParent company group. In October 2025, CB Invest created Euthénio Ingénierie to complement WOR Ingénierie with construction economics expertise. Previously created Effectio Ingénierie for execution phase (EXE) missions.
• Besson Carrier ArchitectessupportingStrategic or Co-development PartnerArchitecture firm collaboration on public sector projects including sports facilities and emergency services buildings.
• NZI ArchitecturesupportingStrategic or Co-development PartnerArchitecture firm collaboration on student housing projects including Paris 15e restructuring.
• POCO StructuressupportingTechnology or IntegrationStructural engineering partner on the Levallois rehabilitation project.
• Overcode ArchitecturesupportingStrategic or Co-development PartnerArchitecture firm collaboration on municipal projects including Ablis sports hall and Paris 11e office building.
• OSJL ArchitectessupportingStrategic or Co-development PartnerArchitecture firm collaboration on Paris 11e office building project.
• EA+LLAsupportingStrategic or Co-development PartnerArchitecture firm collaboration on community of communes headquarters in Épernon.
• Atelier des OrteauxcoreStrategic or Co-development PartnerActive architecture partnership on multiple projects including Gagny leisure center extension and Le Mesnil-Saint-Denis school group.
• ANKR Architecte OPCsupportingStrategic or Co-development PartnerArchitecture and OPC partner on Levallois rehabilitation project.
• TORI ArchitecturesupportingStrategic or Co-development PartnerArchitecture firm on Paris 14e housing rehabilitation project.
• Haddock ArchitecturesupportingStrategic or Co-development PartnerArchitecture and OPC firm on Villiers-le-Bel school canteen project.
• AKA ArchitecturesupportingStrategic or Co-development PartnerArchitecture firm on Val Touraine Habitat energy rehabilitation project.
• ANTEI IngénieriesupportingTechnology or IntegrationStructural engineering partner on Pavillons-sous-Bois office project.
• GBBsupportingTechnology or IntegrationPartner referenced in Effectio Ingénierie project execution work.
• Energy RéseauxsupportingTechnology or IntegrationPartner referenced in Effectio Ingénierie project execution work.
• Aqua & Ferro servicessupportingTechnology or IntegrationPartner referenced in Effectio Ingénierie project execution work.
• GuiniersupportingTechnology or IntegrationPartner referenced in Effectio Ingénierie project execution work.

Scale indicators3 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Egis: Large French engineering group operating across buildings, transport, energy, and environment. Overlaps with WOR in building-engineering studies for public-sector clients and sustainability/energy mandates, though at substantially larger scale and broader scope.
• Arcadis: Global design and consultancy firm with a French building-engineering practice (Arcadis France). Competes for large public-sector and real-estate development mandates with overlapping BIM, sustainability, and project-management capabilities.
• Ingerop: Independent French engineering group with strong building, infrastructure, and energy-environment practices. Comparable in offering multidisciplinary engineering studies and energy/RE 2020 consulting, but with broader national coverage and larger headcount.
• Tractebel (Engie Solutions): Engineering consultancy within the Engie group offering building, energy, and infrastructure engineering. Competes for large public-sector energy-performance and decarbonization mandates that overlap with WOR's energy/environment domain.
• Artelia: Major French-headquartered engineering and project management group offering building, infrastructure, and industrial engineering. Competes with WOR for larger public-sector and real-estate development mandates, but at a much broader portfolio scale.

Direct peers

• Oteis: French engineering consultancy (BET) of comparable mid-market size offering multidisciplinary building engineering (fluides, structure, thermique, VRD) and BIM coordination for social housing, public, and private clients across France. Closely comparable in service mix, customer base, and French-market focus to WOR Ingénierie.
• Setec Bâtiment: French engineering group with a building division providing multidisciplinary engineering studies, BIM, and project management for public and private construction. Comparable on service breadth but operates at significantly larger scale than WOR.
• Verdi Ingénierie: French bureau d'études techniques specializing in sustainable building engineering (thermique, fluides, environment, structure) with strong social-housing and public-sector exposure. Highly comparable to WOR on service lines, certifications focus, and customer segments.

Others

• Bureau Veritas: Global testing, inspection, and certification company with strong French presence. Adjacent to WOR via building-compliance certification, energy audits, and regulatory-verification services rather than direct engineering-study competition.
• SOCOTEC: French leader in testing, inspection, and certification for construction and infrastructure. Tangentially comparable through building-controls, energy diagnostics, and sustainability certification services that intersect with WOR's DPE and energy-performance work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/BET_WOR
• LinkedInlinkedin.com/company/wor-ingenierie

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 records

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 Wor Ingenierie