Hexa-ingenierie

What Hexa-ingenierie does

Hexa Ingénierie is a privately held French engineering consultancy (bureau d'études) founded in 1983 in Douai, France, operating as a SAS under majority executive ownership (currently held by Olivier LUCZAK following a 2023 takeover). The company provides multi-disciplinary building, urban planning, and environmental engineering services through seven integrated service divisions: TCE (Tous Corps d'État) full-service engineering, Structure, Fluides (HVAC and plumbing), Electricité, Aménagement Urbain et Eclairage Public, Environnement et Energie, and Travaux. The firm positions itself as a 'guichet unique' (single point of contact) for all engineering needs across construction, rehabilitation, and urban development projects, with technical capabilities including BIM (Building Information Modeling) and thermal simulation using PLEIADES, CLIMAWIN, and CLIMAUDIT software supporting regulatory compliance with RT 2012, RE 2020, HQE, BREEAM, NF Habitat, and LEED certifications.

The company's customer base spans public sector clients (municipalities, Département du Nord, Région Hauts-de-France, Ministry of Armed Forces), healthcare providers (APHP, Centre Hospitalier de Beauvais), social housing organizations (Vilogia, Maisons & Cités, Partenord, Norevie, LMH, Habitat du Nord), educational institutions, commercial developers, and industrial clients (Framatome, Bridgestone). Geographic operations are concentrated in the Hauts-de-France region with extensions into the broader northern France departments and limited Paris region activity. Revenue is generated through project-based professional services fees sourced via public procurement (concours, appels d'offres, MAPA) and direct commissions from public institutions and private developers; the company serves as prime contractor (mandataire) or co-contractor (co-traitant) on engineering mandates.

The business model is traditional professional services: fees tied to scope, complexity, and contract terms, with no standardized public pricing. Headcount of 11-50 employees (31+ across documented service teams) supports the operational scale. The firm has accumulated over 40 years of project references in healthcare facilities, schools, social housing, sports and cultural venues, urban infrastructure, and industrial buildings, forming the basis of its brand equity in regional markets.

Name

Hexa-ingenierie

Legal name

HEXA INGÉNIERIE

Website

https://hexa-ingenierie.com

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

11–50 employees

Short description

Hexa Ingénierie is a privately held French multi-disciplinary engineering consultancy founded in 1983, providing building, urban planning, and environmental engineering services to public institutions, healthcare providers, social housing organizations, and private developers primarily across northern France.

Ownership category

akta.pro rank

Product category

Building Engineering Consulting

NAICS

Engineering Services (541330), Architectural Services (541310), Management, Scientific, and Technical Consulting Services (5416)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Industrial & Process Engineering Consulting (BPAHAIAF)

akta.pro secondary industries

Architectural Design Services (BPAHAKAA), Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL), Residential Design-Build & Renovation-Integrated Builders (IMAFABAE)

Keywords

• Building engineering services
• Urban development consulting
• Structural engineering design
• HVAC and plumbing engineering
• Environmental engineering consulting

Headquarters

HQ city

Douai

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 and Design Services: Project-based fees for master planning, preliminary studies, design, and execution monitoring for construction and renovation projects. Revenue generated through public procurement contracts, direct commissions from public institutions and private developers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Hexa Ingénierie is a multi-disciplinary French engineering consultancy (bureau d'études) that provides engineering, design, and consulting services for building construction, renovation, urban development, and environmental projects. The company delivers services across all construction trades (TCE - Tous Corps d'État) covering structural, mechanical/fluids (HVAC/plumbing), electrical, energy, environmental, and urban planning disciplines for public institutions, healthcare facilities, social housing organizations, and private developers.

Product overview

Hexa Ingénierie is a multi-disciplinary engineering consultancy (bureau d'études) offering comprehensive engineering services for construction, urban planning, and environmental projects. The company provides a unified service offering through specialized divisions: TCE (Tous Corps d'État) for full building engineering, Energy Services for energy management and renewable solutions, Urban Planning & Public Lighting for infrastructure projects, Environment Services for sustainable development and certifications, Structural Engineering for all building types, Electrical Engineering for power and security systems, and Fluides (HVAC/Plumbing) for thermal and fluid systems. These services are delivered through project management assistance (AMO), design engineering, and execution oversight for projects spanning construction, renovation, and urban development across sectors including housing, healthcare, education, sports, culture, and industry.

Differentiator

Problem solved

Functional benefit

Products and services

• TCE (Tous Corps d'État) - Prescriptions Full building engineering services covering all construction trades, including project management assistance (AMO), design, execution oversight, diagnostics, and technical prescriptions for construction and renovation projects across public institutions, housing, healthcare, and industry.
• Energy Services Energy management services including heating system contracts, district heating networks, performance contracts, feasibility studies, energy master plans, and energy procurement support, including integration of renewable energy systems (geothermal, solar, photovoltaic, cogeneration, biomass).
• Urban Planning & Public Lighting Urban development services including road creation and requalification, transport infrastructure, activity zones, shopping centers, eco-districts, subdivisions, and public lighting installations for municipalities and developers.
• Environment Services Environmental engineering including regulatory files, waste management contracts, water and sanitation services, and sustainable development consulting for HQE, NF Habitat, and LEED certifications.
• Structural Engineering Structural engineering services for concrete, steel, and timber construction including calculations, 3D modeling, BIM, diagnostics, foundations, geotechnics, and mixed structures for new builds and rehabilitation.
• Electrical Engineering Electrical engineering covering high and low voltage distribution, hospital and industrial site security, lighting design, photovoltaic installations, and security systems including SSI (fire safety systems) and videoprotection.
• Fluides (HVAC & Plumbing) Thermal and climate engineering including heating, ventilation, air conditioning, plumbing, medical gases, fire protection/sprinklers, cold production, and thermal studies using PLEIADES and CLIMAWIN software.

Named customers9 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eleven partnerships are on record, tiered minor and core.

• PIXL ArchitectesminorImplementation/ SI/ Consulting PartnerArchitecture firm serving as lead architect on projects such as Tertia 3000 rehabilitation. Hexa Ingénierie provides technical engineering as BET co-contractor.
• ARCOS ArchitectureminorImplementation/ SI/ Consulting PartnerArchitecture firm leading rehabilitation and extension projects such as Piscine Jean Bouin. Hexa Ingénierie provides technical engineering support.
• TRANSITECcoreStrategic or Co-development PartnerMobility engineering firm collaborating on urban transport projects including BHNS bus line extension. Partnership involves complex urban infrastructure integration.
• SLAP (Paysage)coreImplementation/ SI/ Consulting PartnerLandscape architecture firm working with Hexa Ingénierie on urban development projects including street renewal and urban infrastructure.
• SERUE (Ouvrages d'Art)minorImplementation/ SI/ Consulting PartnerStructural engineering firm specializing in civil engineering works, collaborating on transport infrastructure projects.
• Groupe DuvalcoreChannel Partner/ Reseller/ DistributorMajor real estate development group commissioning large-scale mixed-use projects including Euralille 3000. One of Hexa Ingénier's key private sector clients.
• IcadecoreChannel Partner/ Reseller/ DistributorReal estate investment company participating in large development projects with Hexa Ingénierie as technical engineering partner.
• Multiple Municipalities (Neuville-en-Ferrain, Comines, Louvroil, Raimbeaucourt, Lezennes, etc.)coreChannel Partner/ Reseller/ DistributorOver 25 municipalities in northern France engage Hexa Ingénierie for building operation contracts, representing a significant client base for ongoing services.
• Housing Organizations (Partenord Habitat, Norevie, LMH, Habitat du Nord, etc.)coreChannel Partner/ Reseller/ DistributorSocial housing organizations engaging Hexa Ingénierie for housing rehabilitation and construction projects across northern France.
• POLYNOME ArchitectecoreImplementation/ SI/ Consulting PartnerArchitecture firm collaborating on high-profile sustainable building projects including BEPOS buildings. Multiple projects including EHPAD and cultural facilities.
• ETICcoreStrategic or Co-development PartnerSolidarity investment fund (ESUS) developing ecological third-place buildings. Hexa Ingénierie serves as BET for sustainable building projects including La Loco.

Scale indicators3 records

Recent moves10 records

Expansion highlights5 records

Broad incumbents

• Ingérop: Independent French engineering firm covering buildings, infrastructure, and environment. Comparable TCE/BET positioning with similar public-sector client focus and presence across northern France.
• Egis: Major French engineering group offering building, infrastructure, energy, and urban planning services. Directly comparable multi-disciplinary TCE capability but at vastly greater scale and with national/international footprint.
• Ginger CEBTP: French engineering group specialized in construction, geotechnics, and environmental studies. Comparable TCE-plus-environment capability and serves similar housing and public-sector clients in northern France.
• Artelia: French engineering consultancy with strong building, energy, and environment practices. Competes for the same public-sector and developer clients on similar TCE mandates, though at significantly larger scale.
• Tractebel (Engie Solutions): Large engineering consultancy (part of Engie group) active in building energy, infrastructure, and urban planning. Overlaps with Hexa on energy performance, district heating, and public-sector infrastructure contracts.

Direct peers

• Setec: Multi-disciplinary French engineering group (setec tpi, setec bâtiment, etc.) offering building, energy, and environmental engineering. Closest analog in TCE multi-disciplinary BET model, though with broader geographic and disciplinary reach.
• Burgeap: French BET specialized in environment, water, and waste — including regulatory dossiers and sustainable development consulting. Overlaps directly with Hexa's Environment service line and certification work (HQE, LEED).
• AIA Life Designers: French architectural and engineering group focused on healthcare, education, and urban development — direct overlap with Hexa's strongest verticals (santé, enseignement, aménagement urbain) on similar TCE-plus-AMO mandates.

Others

• VERITAS (Bureau Veritas): Although primarily a TIC/inspection firm, Bureau Veritas provides building commissioning, energy auditing, and certification services that partially overlap with Hexa's environmental and energy performance work.

Regional players

• Sogeti Ingénierie / Sogea Environnement: Regional engineering entities under VINCI Construction with comparable multi-trade building engineering services in northern France. Compete for similar public and private construction mandates at local level.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/hexa-ingenierie

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 Hexa-ingenierie