LGX Ingénierie

What LGX Ingénierie does

LGX Ingénierie is a French multidisciplinary technical building studies bureau (bureau d'études techniques du bâtiment) operating across all construction trades (Tous Corps d'État) since 1981. The firm delivers engineering studies and consulting across eleven practice areas: fluids/HVAC, thermal, structural, environmental, asbestos/lead assessment, BIM, construction economics, acoustics, project coordination (OPC/MOEX), owner's representation (AMO), and roads/utility networks (VRD). It serves both public and private building owners (maîtres d'ouvrage) including social housing operators, local authorities, and private developers, partnering with architect firms on new construction and rehabilitation mandates.

The firm's operational model is project-based fee-for-service engineering consultancy, with services contracted directly with building owners and developers. Projects span 600 new housing units and 1,700 rehabilitated units per year, plus approximately 8 facilities annually. The company holds OPQIBI professional qualification and AIPR training certification, both of which are required credentials for regulated French construction mandates. It operates from Ivry-sur-Seine (operational headquarters) and Vitry-sur-Seine (registered office) within Île-de-France, with 17 employees and a reported client base of 96 active accounts.

The business is structured as a SAS (Société par Actions Simplifiée) with €120,000 share capital, led by President Si Mohamed ADIB, with no disclosed external investors, parent entities, or M&A activity. Distribution is executed through direct field sales to building owners, supplemented by a project-portfolio website and LinkedIn presence. Pricing is per-project and not publicly disclosed.

Name

LGX Ingénierie

Legal name

LGX Ingénierie

Website

https://lgx.fr

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

11–50 employees

Short description

LGX Ingénierie is a French multidisciplinary building engineering consultancy (Tous Corps d'État) founded in 1981, serving public and private building owners across Île-de-France with engineering studies in 11 disciplines, including HVAC, structure, BIM, and project coordination.

Ownership category

akta.pro rank

Product category

Building Engineering Consultancy

NAICS

Engineering Services (54133), Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Process Safety & Major Hazard Risk Management (PSM) (BPAHAJAE)

akta.pro secondary industry

Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL)

Keywords

• Building engineering services
• Structural engineering consulting
• HVAC engineering design
• Construction project management
• BIM services

Headquarters

HQ city

Ivry-sur-Seine

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Studies and Consulting Services: LGX Ingénierie generates revenue through fee-for-service engineering studies and consulting mandates across multiple building disciplines, serving both new construction and rehabilitation projects. Revenue is project-based, contracted directly with building owners, developers, and public entities.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

LGX Ingénierie is a multi-disciplinary building engineering consultancy (bureau d'études techniques) that delivers technical studies, diagnostics, and project management assistance across all construction trades for new construction and rehabilitation projects. It serves public and private building owners with eleven in-house expertise areas covering fluids/MEP, thermal, structure, environment, asbestos/lead, BIM, construction economics, acoustics, scheduling/site supervision (OPC/MOEX), owner project assistance (AMO), and roads/networks (VRD).

Product overview

LGX Ingénierie is a multidisciplinary engineering consultancy (bureau d'études techniques du bâtiment TCE - Tous Corps d'État) offering comprehensive engineering services for building construction and rehabilitation. The company operates as a unified service portfolio organized around 11 core expertise areas: Fluides (fluids/HVAC), Thermique (thermal), Structure (structural), Environnement (environmental), Amiante/Plomb (asbestos/lead), BIM (digital modeling), Économie de la construction (cost management), Acoustique (acoustics), OPC/MOEX (project management), AMO (owner's representative), and VRD (infrastructure/networks). These integrated expertise areas work together to serve both public and private building projects across new construction and rehabilitation.

Differentiator

Problem solved

Functional benefit

Products and services

• Fluides (MEP/Fluids Engineering)

Quantifiable outcome

• 600 new housing units delivered per year
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Architect FirmscoreStrategic or Co-development PartnerLGX Ingénierie collaborates extensively with architect firms as project partners on both new construction and rehabilitation projects. The company provides multi-disciplinary engineering studies while architects lead the design, with perspectives of buildings in reference projects emanating from partner architects' project dossiers.

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Setec: French engineering group specialized in construction, infrastructure, and environment. Directly comparable to LGX as a French building engineering consultancy covering multiple disciplines (TCE) for public and private construction projects.
• Ginger CEBTP: French geotechnical and construction engineering firm specializing in building materials, soils, and structures. Comparable to LGX's Structure and environmental engineering disciplines for French construction and rehabilitation projects.
• Ingérop: French independent engineering firm with building, infrastructure, water, and energy practices. Comparable to LGX as a multidisciplinary French engineering consultancy serving maîtres d'ouvrage on construction and rehabilitation projects.
• Berim: French independent engineering consultancy with building, infrastructure, and environment practices. Most directly comparable to LGX as a mid-sized French multidisciplinary building engineering firm serving public and private clients.
• Artelia: French engineering consultancy with building, infrastructure, and environment practices. Directly comparable as a multidisciplinary French building engineering firm serving public and private developers, though at significantly larger scale than LGX.

Broad incumbents

• Bureau Veritas: Global testing, inspection, and certification (TIC) company with a major French construction and built-environment practice. Comparable given LGX's TIC-adjacent activities (asbestos/lead assessment, environmental compliance, BIM), though Bureau Veritas operates at a vastly larger scale.
• Egis: French-headquartered international engineering group with a strong building, urban development, and infrastructure practice. Comparable as a French multidisciplinary engineering firm serving public and private building owners, though Egis is much larger and globally diversified.
• Apave: French testing, inspection, and certification group with construction and real estate practices. Comparable to LGX for building technical control, environmental, and safety-related engineering services in France.
• SOCOTEC: French TIC leader with deep construction, building, and infrastructure inspection expertise. Comparable to LGX for regulatory compliance, asbestos/lead, and structural-related mandates, with significant overlap in French public and private building projects.
• Tractebel (Engie Solutions): International engineering consultancy with a strong French building and energy practice. Comparable to LGX on building systems, energy efficiency, and rehabilitation engineering, though operating at a much larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/lgx-ingenierie

Compliance2 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 LGX Ingénierie