What Groupe Alienor does

Groupe Alienor is a privately held French generalist engineering group (bureau d'études généraliste) headquartered in Pessac, France, providing building engineering consultancy, project management, and turnkey construction services to property developers and project owners across France and internationally. The group operates as a single entry point for construction projects, with wholly-owned subsidiaries covering structural engineering (SIGMA, SEE Industrie, AlienorIng), VRD/civil infrastructure, HVAC and renewable energy (Actif ENR), commercial surfaces (Aqciom), wine industry engineering (Alienor Vini), general contracting (Contracting), and other specialized disciplines, alongside recently added units Armacerce and CEEC. Its business model is project-based services revenue — maîtrise d'œuvre, technical studies, AMO (Assistance à Maîtrise d'Ouvrage), and turnkey delivery as Contractant Général — earned across multiple verticals including retail (Carrefour, Auchan, E.Leclerc, Super U), luxury hospitality and heritage (Lov Hôtel Collection, Baccarat, Hilton, Airelles Val d'Isère), healthcare/EHPAD (Orpea, Domusvi, Vivalto), wine (Champagne Lanson), public infrastructure (SNCF Gares et Connexions, Ministère de la Défense, Métropole du Grand Paris), and sports (UCPA Val Thorens). The group operates across at least 13 French regions and has extended into Africa (Morocco via Alienor Africa, Burkina Faso, Guinea) and the Indian Ocean, with revenue and headcount not publicly disclosed.

Name

Groupe Alienor

Legal name

Groupe Aliénor

Website

https://www.alienor-groupe.com

Company type

Private

Founded year

2010

Operating status

Operating

Short description

Groupe Alienor is a privately held French generalist engineering group providing building consultancy, project management, and turnkey construction services through multiple specialized subsidiaries across France, Africa, and the Indian Ocean.

Ownership category

akta.pro rank

Product category

Engineering & Construction Services

NAICS

Architectural, Engineering, and Related Services (5413), Engineering Services (54133), Nonresidential Building Construction (2362)

SIC

Services-Engineering Services (8711), Construction - Special Trade Contractors (1700)

akta.pro primary industry

Construction Management (Agency/Owner’s Rep) (IMAFAAAC)

akta.pro secondary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

Keywords

• Building engineering services
• Construction project management
• Turnkey construction
• Structural engineering design
• MEP engineering systems

Headquarters

HQ city

Pessac

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

Distribution channels1 record

Marketing channels1 record

Core offering

Groupe Alienor is a French building engineering consultancy and construction group that delivers engineering studies (bureau d'études), project management (maîtrise d'oeuvre), and turnkey construction services through multiple specialized subsidiaries. The group's offerings span structural engineering, MEP systems, thermal performance, and other building disciplines, serving commercial, residential, industrial, luxury, and wine-sector construction projects.

Product overview

Groupe Alienor is a generalist engineering group (bureau d'études généraliste) operating primarily in France's construction and BTP sector. The group functions as a unified entry point for project owners seeking to develop building, industrial, or development projects. The portfolio consists of multiple subsidiaries including Contracting, VRD, SIGMA, SEE Provence, AlienorInge, Alienor Vini, ARD, AQCIOM, Kypseli, Actif, Armacerce, and CEEC, each specializing in distinct engineering disciplines. Core service areas include BTP Construction Engineering, Industry, AMO (Project Owner Assistance), Commercial Surfaces, Luxury & Historical Monuments, and Wine Industry Engineering. The group also offers general contracting services providing turnkey solutions where they assume full project risk on behalf of the owner.

Differentiator

Problem solved

Functional benefit

Products and services

• Building Engineering Studies (Bureau d'Études) Multi-disciplinary engineering studies covering structural, MEP, and thermal performance design for building projects, delivered to project owners, developers, and architects.
• Construction Project Management (Maîtrise d'Oeuvre) Construction-side project management services coordinating design and execution on behalf of project owners across commercial, residential, industrial, luxury, and wine-sector developments.
• Turnkey Construction End-to-end turnkey construction delivery through the group's subsidiaries, providing clients with a single accountable builder for commercial, residential, industrial, luxury, and wine-sector projects.

Named customers18 records

Segments6 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Twelve partnerships are on record, tiered core and minor.

• Sigma IngénieriecoreOthersSpecialized subsidiary of Groupe Alienor focused on general engineering studies
• SEE IndustriecoreOthersSubsidiary specializing in industrial infrastructure and civil engineering
• Actif ENRcoreOthersSubsidiary specializing in renewable energy engineering and HVAC systems
• AqciomcoreOthersSubsidiary focused on commercial surfaces and industrial building expertise
• Alienor VINIcoreOthersSubsidiary specializing in wine industry engineering
• KypselicoreOthersSubsidiary within the group structure
• ContractingcoreOthersSubsidiary specializing in general contracting and turnkey project delivery
• VRDcoreOthersSubsidiary specializing in road and utility networks engineering
• Alienor Ingénierie Nouvelle-AquitainecoreOthersSubsidiary specialized in structural engineering
• CEECcoreOthersSubsidiary within the group structure (likely OPC/coordination)
• ARD IngénieriecoreOthersSubsidiary specializing in building engineering and construction management
• INESminorStrategic or Co-development PartnerResearch partner for ACTIF subsidiary - collaboration on thermal performance and renewable energy solutions

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• VINCI Construction France: Major French general contractor and construction engineering group — competes with Alienor's Contracting subsidiary for turnkey building delivery, though at vastly greater scale across France.
• Bureau Veritas: Global French-headquartered testing, inspection, and certification group with significant construction-engineering overlap — much larger and broader, but competes for engineering-quality and compliance mandates on similar assets.
• Tractebel (Engie): Global engineering consultancy within the Engie group — operates broadly across building, energy, and infrastructure engineering, comparable to Alienor's combined engineering/energy practice but at much larger scale.

Emerging players

• Groupe Patriarche: French generalist engineering and architecture group comparable in scale and multi-disciplinary structure, with similar luxury/hospitality and renovation project references — direct niche competitor for Alienor's luxe et monuments historiques practice.
• Egis Rail / SAFEGE: Specialized French infrastructure engineering subsidiary comparable to Alienor's VRD and transport practice (illustrated by the SNCF Gares & Connexions reference) — narrower scope but adjacent niche.

Direct peers

• Setec Group: French multi-disciplinary engineering group with building, infrastructure, and project management subsidiaries (setec bâtiment, setec travaux, etc.) — closely parallels Alienor's multi-subsidiary engineering-to-construction structure.
• Spie Batignolles: French general contractor and construction group combining engineering and execution capabilities — directly comparable to Alienor's Contracting + engineering subsidiaries for turnkey building delivery.
• INGEROP: Independent French engineering group active in building, infrastructure, energy, and industry — competes directly for the same maître d'oeuvre and technical studies mandates as Alienor's Sigma and SEE subsidiaries.
• Egis Group: Major French engineering group offering multi-disciplinary building, infrastructure, and project management services — the closest scale-and-business-model analogue to Groupe Alienor's integrated engineering + maître d'oeuvre platform, though with a substantially larger international footprint.
• Artelia: Independent French engineering consultancy providing building, infrastructure, and industrial project services across France and internationally — directly comparable in scope to Alienor's Sigma/ARD/Actif engineering practices.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/groupe-ali%C3%A9nor

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries15 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 Groupe Alienor