Thor Engineering

What Thor Engineering does

Thor Ingénierie (Thor Engineering) is a France-based engineering consultancy founded around 2003 and headquartered in Thiais (Val-de-Marne, Île-de-France), specializing in building technical systems for luxury hospitality, luxury retail, and tertiary sector clients. The firm operates across five core service lines — Assistance à Maîtrise d'Ouvrage (AMO), Maîtrise d'Œuvre (MOE), Expertise Technique, Expertise BIM, and Ingénierie de Maintenance — and five technical domains: Génie Électrique, Génie Climatique, Plomberie Sanitaire, Énergies Renouvelables, and Protection Incendie. It holds RGE-OPQIBI qualifications across climate engineering, strong/weak currents, fluids, fire protection, smoke extraction, and security, which are prerequisites for many qualifying French tenders.

The company's business model is project-based professional services delivered directly to enterprise clients, with pricing negotiated per engagement scope rather than publicly disclosed rate cards. Projects are typically multi-year renovation contracts executed in operating luxury properties (e.g., Le Ritz, Le Claridge, Le George V, Louis Vuitton boutiques, InterContinental, Hoxton), requiring coordination of multiple technical trades while maintaining operational continuity. Distribution is exclusively direct: the firm relies on its professional reputation, portfolio of prestigious references, and relationship-driven business development rather than digital marketing or third-party channels. Since January 2023, Thor Ingénierie has operated as a wholly-owned subsidiary of FERRO INGÉNIERIE (led by CEO Olivier Gaussail), and in January 2024 installed Dominique JANASIK as Directeur des Opérations to lead the post-acquisition operating model. Share capital stands at €450,000 and headcount is reported in the 11–50 range, consistent with a boutique specialist consultancy.

Name

Thor Engineering

Legal name

SAS Thor Ingénierie

Website

https://thor-ingenierie.fr

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

11–50 employees

Short description

Thor Ingénierie is a France-based engineering consultancy specializing in HVAC, electrical, plumbing, fire protection, and BIM services for luxury hotel, luxury retail, and tertiary building renovations, serving enterprise clients such as Le Ritz, Louis Vuitton, and EDF Campus.

Ownership category

akta.pro rank

Product category

Engineering Consulting Services

NAICS

Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Construction Program Management (Multi-site/Portfolio) (IMAFAAAF)

akta.pro secondary industry

Preventive Maintenance & Asset Lifecycle Management (EDALALAE)

Keywords

• Engineering consultancy services
• Building technical systems
• HVAC engineering
• BIM coordination
• Luxury property renovation

Headquarters

HQ city

Thiais

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 Consulting Services: THOR INGÉNIERIE generates revenue through professional engineering consulting services including Assistance à Maîtrise d'Ouvrage (AMO), Maîtrise d'Œuvre (MOE), technical expertise, BIM expertise, and maintenance engineering. Services are project-based and likely billed on a fixed-fee or time-and-materials basis for building technical systems projects.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Thor Ingénierie is an engineering consulting firm that advises property owners from project definition through operations. Its work centers on the technical building trades — HVAC (Chauffage, Ventilation, Climatisation), electrical systems (Courants Forts/Courants Faibles), plumbing, fire protection, and renewable energies — and on BIM (Building Information Modeling) coordination. Services are sold as five named missions: Assistance à Maîtrise d'Ouvrage (AMO), Maîtrise d'Œuvre (MOE), Expertise Technique, Expertise BIM, and Ingénierie de Maintenance.

Product overview

Thor Ingénierie is an engineering consulting firm offering project engineering services with over 20 years of experience. The company operates through five core service offerings: Assistance à Maîtrise d'Ouvrage (project management assistance), Maîtrise d'Œuvre (main contractor services), Expertise Technique (technical expert witness services), Expertise BIM (building information modeling services), and Ingénierie de Maintenance (maintenance engineering). These services are delivered across five specialized technical domains: Génie Électrique (electrical engineering), Génie Climatique (HVAC engineering), Plomberie Sanitaire (sanitary plumbing), Énergies Renouvelables (renewable energy), and Protection Incendie (fire protection). The company specializes in the luxury sector, serving high-end hotels and boutique clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Assistance à Maîtrise d'Ouvrage (AMO) Consulting, assistance, and proposal services that help project owners coordinate their construction and renovation projects from identification through completion. Delivered across all technical building trades for luxury hospitality, retail, and tertiary-sector clients.
• Maîtrise d'Œuvre (MOE) Operational management of construction works including costs, deadlines, and technical choices, while respecting contracts and specifications. Acts as the main contracting engineering lead for building technical system projects.
• Expertise Technique Expert witness and technical audit services for judicial or amicable proceedings relating to disorders in technical installations. Includes compiling project documents, conducting site surveys, technical audits, identifying non-conformities, and preparing expert reports.
• Expertise BIM BIM (Building Information Modeling) services covering project design and planning, multi-corporate coordination, project management, BIM training, technical documentation, and third-party BIM maturity audits. Includes preparing BIM charters, specifications, and conventions.
• Ingénierie de Maintenance Maintenance strategy development to ensure equipment reliability through preventive, corrective, and improvement methods. Covers maintenance procedure organization, regulatory compliance, and technical improvement solutions aligned with manufacturer recommendations.

Quantifiable outcome

• Achieved HQE (Haute Qualité Environnementale) 'excellent' level certification and BREEAM 'very good' level for Gerty Bercy Crystal office building project

Named customers9 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• FERRO INGÉNIERIEcoreStrategic or Co-development Partner · 24 January 2023In January 2023, FERRO INGÉNIERIE acquired THOR INGÉNIERIE as part of its growth strategy. The acquisition combines FERRO's 40+ years of experience in AMO and MOE missions with THOR's specialized expertise in luxury building renovations. Philippe Cuvilliez was the outgoing Managing Director of THOR; Olivier Gaussail is CEO of FERRO INGÉNIERIE. The merger enables extended service offerings through complementary expertise in the building and networks sectors. The companies share common values: client satisfaction, quality, and innovation in solutions. Thierry Ferro is mentioned as a key figure in the organization.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• Tractebel (ENGIE): Large international engineering consultancy owned by ENGIE, covering energy, buildings, and infrastructure. Operates a building engineering practice that competes for the same HVAC/electrical/plumbing consulting mandates as Thor Ingénierie, particularly on large luxury and commercial projects.
• Bureau Veritas: Global testing, inspection, and certification firm with a substantial building and infrastructure compliance practice. Adjacent to Thor Ingénierie's Expertise Technique (expert witness / technical audit) services, particularly around regulatory compliance and certification work in luxury real estate.

Direct peers

• Setec: French engineering group with strong building and infrastructure practices offering project management, technical design, and construction supervision. Directly comparable service overlap with Thor Ingénierie's MOE and technical expertise offerings in the building sector.
• Egis: Major French engineering group providing building engineering, project management, and consultancy across transport, energy, and urban development. Highly comparable to Thor Ingénierie's MOE/AMO service model in the building sector, though operating at significantly greater scale.
• INGEROP: Independent French engineering consultancy specializing in building, infrastructure, energy, and environmental projects. Comparable in offering multi-technical engineering services and AMO/MOE missions for complex building projects in France.
• TPF Ingénierie: Belgian-headquartered engineering consultancy with strong presence in France, offering building, infrastructure, and project management services. Closely comparable to Thor Ingénierie in service portfolio and target market, including luxury and tertiary building projects.
• Barbanel Ingénierie: Smaller French building engineering consultancy offering MOE and AMO services for multi-technical building projects. Comparable in scale and service scope to Thor Ingénierie, particularly for tertiary and commercial real estate clients in France.
• FERRO INGÉNIERIE: French engineering consultancy and Thor Ingénierie's parent company since January 2023. Operates in adjacent AMO/MOE missions with 40+ years of experience, providing direct comparability on service mix and a sense of the strategic direction for the combined entity.
• Artelia: French-headquartered engineering consultancy offering building, infrastructure, and project management services across multi-technical trades (HVAC, electrical, plumbing, fire protection). Directly comparable to Thor Ingénierie in service mix, with the key difference being Artelia's much larger scale and broader geographic footprint.

Emerging players

• Assystem: French engineering and digital services firm with growing building and infrastructure practice. Adjacent comparator given shared French engineering heritage, though Assystem is more weighted toward energy and industrial clients than Thor's luxury hospitality focus.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance1 record

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 Thor Engineering