What Oteis does

Oteis is a French privately held multidisciplinary consulting and engineering group headquartered in Bois-Colombes (Paris) that delivers advisory, design, project management and exploitation-maintenance services across four integrated service lines: Building (consulting, façade and envelope engineering, energy renovation), Water & Urban Development, Infrastructures & Civil Engineering, and Industry & Process. Its technology backbone is BIM (Building Information Modeling) used across the full project lifecycle from conception to operation, complemented by digital building management tools (GMAO, GTB/GTC, Energy Management Systems) and a dedicated R&D unit, OteisLab, focused on sustainable and digital engineering.

The group operates a holdco structure of largely brand-retained subsidiaries built through serial acquisitions — UrbaConseil (urban planning, 2019), IOA (bridges, 2021), SGI Ingénierie (2022), Oteis Partners/Icade AMO Santé (2023), MATRIciel (Belgian sustainable building, 2024), Falco (industrial process, 2024), Elithis (positive-energy buildings, 2025) and GreenFlex (sustainability/decarbonization, 2025, ~800 employees) — giving it roughly 1,100+ total staff across 25+ offices in metropolitan France, all four DOM-TOM territories, Belgium and Monaco. Revenue is earned through project-based professional services fees (competitive public tender and private bidding), multi-year framework agreements such as a 10-year Global Energy Performance Contract with Dijon Métropole, and CEE (Certificats d'Économies d'Énergie) financing.

Clients span both public and private sectors and include AP-HP and AP-HM (hospitals), Klépierre (21 European shopping centers), Sanofi, Safran, Servier, Crédit Agricole de La Réunion, SEGRO, Swiss Life, Groupama d'Occitanie, Régie Ligne d'Azur and Dijon Métropole, with marquee projects such as the €170M Tarbes-Lourdes hospital, €185M AP-HM Timone building and €118M Lariboisière hospital. The GTM motion is enterprise field sales led through the regional branch network, supplemented by SIMI, SANTEXPO and FM'DAYS trade-show presence and direct procurement; ownership remains private and independent with no disclosed institutional sponsor.

Name

Oteis

Legal name

Oteis

Website

https://oteis.fr

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

251–500 employees

Short description

Oteis is a French privately held multidisciplinary engineering and consulting group delivering BIM-based advisory, design and project management services across Building, Water & Urban Development, Infrastructure, Industry and Sustainability for public and private-sector clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices28 records

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: Professional engineering and consulting services for construction, infrastructure, water management, and industrial projects. Revenue generated through project-based fees, consulting engagements, and master contracting for multidisciplinary engineering.
2. Real Estate Advisory Services: Real estate strategy, property management consulting, and renovation energy performance services through subsidiaries like Elithis.
3. Sustainability and Decarbonization Services: Environmental consulting, energy efficiency solutions, and sustainable development services following the acquisition of GreenFlex.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Oteis is a French multidisciplinary engineering and consulting group that delivers technical services across Building, Water & Development, Infrastructure & Civil Engineering, and Industrial Process sectors. Its core offering spans three pillars: Conseil (consulting including AMO, real estate strategy, urban planning, and operations-maintenance), Ingénierie (engineering covering structural, façade, MEP, and BIM), and Financement (Energy Efficiency Certificates/CEE). The firm provides full-lifecycle support from conception and design through construction, exploitation, and maintenance for both public and private sector clients.

Product overview

Oteis is a French consulting and engineering group offering a comprehensive portfolio of services across Building, Water & Development, Infrastructure & Civil Engineering, and Industry sectors. The core Oteis Conseil & Ingénierie platform provides consulting (AMO, real estate strategy, urban planning, operations-maintenance), engineering (structural, facade, MEP), and financing services (Energy Efficiency Certificates). The portfolio includes specialized subsidiaries: UrbaConseil (urban planning), Elithis (energy renovation - acquired 2025), GreenFlex (sustainability consulting - acquired from TotalEnergies 2025), MATRIciel (Belgian sustainable engineering), Oteis Partners (healthcare AMO), Falco-Oteis (industry engineering), and IOA-Oteis (civil engineering). Technology services include BIM (Building Information Modeling) and a dedicated Green & Digital pole combining environmental expertise with R&D innovation through OteisLab.

Differentiator

Problem solved

Functional benefit

Brands

• MATRIciel by Oteis: Société belge experte en Ingénierie du bâtiment durable
• GreenFlex by Oteis

Products and services

• Bâtiment (Building Engineering & Consulting) Comprehensive multidisciplinary building engineering and consulting services for commercial, residential, and institutional projects including new construction, renovation, and rehabilitation, delivered from conception to maintenance.
• Façade & Building Envelope Engineering Specialized engineering covering conception, renovation, and maintenance of curtain walls, technical façades, and architectural envelopes, with expertise in structure, environment, acoustics, thermal performance, and materials.
• Exploitation-Maintenance (Operations & Maintenance Consulting) Building operations and maintenance consulting including facility management, multi-technical services, data management, energy performance optimization, and digitalization through GMAO, GTB/GTC/Régulation, and SME systems.
• Eau & Aménagement (Water & Urban Development Engineering) Water infrastructure engineering, urban developments & VRD (roads and various networks), and maritime engineering services for public and private clients.
• Infrastructures & Ouvrages d'Art (Infrastructure & Civil Engineering) Infrastructure and civil engineering services for bridges, structural works, and major engineering structures, including seismic design and environmental integration, delivered via the IOA-Oteis and SGI Ingénierie France subsidiaries.
• Industrie & Process (Industrial Process Engineering) Industrial and process engineering services for industrial projects, including factory-of-the-future design, digital manufacturing, and sustainable industrial processes, delivered via the Falco-Oteis subsidiary.
• Real Estate Advisory (Stratégie immobilière) Real estate strategy and property management consulting for public and private clients, covering portfolio advisory, asset strategy, and renovation energy performance, led by the Real Estate Advisory business unit under Jérémy Leclercq.
• Urbanisme (Urban Planning Consulting) Urban planning, development, and environment consulting for local authorities, developers, and project managers, including planning studies and training, delivered through the UrbaConseil subsidiary.
• AMO – Expertise Santé (Healthcare Project Assistance) Assistance à Maîtrise d'Ouvrage (AMO) and healthcare technical expertise for hospital and healthcare facility projects, delivered through the Oteis Partners subsidiary (acquired from Icade in 2023).
• Elithis Energy Renovation Services Comprehensive energy renovation and rehabilitation of collective residential and tertiary buildings, with Elithis acting as general contractor coordinating all project expertise from initial diagnosis through work completion.
• GreenFlex Sustainability & Decarbonization Consulting
• BIM (Building Information Modeling) Services
• CEE Energy Efficiency Certificates Financing

Quantifiable outcome

• Energy savings of 36-52% achieved in residential renovation projects (Elithis)
• +3 more outcomes

Named customers13 records

Segments6 records

Ideal customer profiles2 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.

• GreenFlex (TotalEnergies subsidiary)coreStrategic or Co-development Partner · 21 October 2025Oteis acquired GreenFlex, a sustainable consultancy subsidiary from TotalEnergies, to enhance capabilities in sustainability and decarbonization. The acquisition brings over 800 employees and expands Oteis's environmental and energy transition services. TotalEnergies continues as a key customer of GreenFlex for energy efficiency projects.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Artelia: Independent French engineering consulting group with multidisciplinary building, infrastructure, water, and industrial capabilities. Closest direct comparator to Oteis in terms of service breadth, French market position, and consulting-plus-engineering hybrid model.
• Burgeap: French environmental and water engineering consultancy (part of Artelia). Comparable to Oteis in water engineering, environmental site assessment, and infrastructure-environment work, especially with the Oteis Eau & Aménagement and MATRIciel environmental pole.
• Assystem: French engineering and digital services firm focused on infrastructure, energy, and industrial clients. Overlaps with Oteis in industrial/process engineering (Oteis's Falco-Oteis unit) and energy transition services.
• Egis: Major French engineering group operating across building, infrastructure, water, energy, and urban development with strong public-sector positioning. Comparable to Oteis in terms of project mix, public procurement exposure, and multidisciplinary engineering scope.
• Antea Group: International engineering and environmental consulting firm with strong French (Infra Services) and European presence. Overlaps with Oteis's GreenFlex and MATRIciel environmental engineering, water, and sustainable development practices.
• Systra: French engineering group specialized in transportation and infrastructure (bridges, civil works). Overlaps with Oteis's IOA and SGI Ingénierie bridges/civil engineering capabilities and its public-sector infrastructure references.

Broad incumbents

• WSP: Global engineering professional services firm with deep European footprint and strong buildings, water, and environment practices. Comparable to Oteis in multidisciplinary engineering and sustainability advisory, with stronger international diversification.
• Arcadis: Global design and engineering consulting firm with strong sustainability and buildings practices. Comparable to Oteis in real estate advisory, sustainable design (RE2020 / BREEAM-style services), and BIM-led project delivery, but operates at significantly larger scale internationally.
• Tractebel (Engie): Large global engineering consultancy owned by Engie, operating broadly in energy, water, buildings, and infrastructure. Provides overlapping capabilities to Oteis in decarbonization, water engineering, and sustainable building, but at much larger scale and broader scope.

Emerging players

• Greenly (carbon accounting SaaS): French carbon-accounting SaaS company that overlaps thematically with GreenFlex's sustainability/decarbonization advisory. Not a direct competitor to Oteis engineering services, but represents the digital, software-driven adjacent disruptor to traditional consulting decarbonization work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@oteis-greendigitalengineer4068
• LinkedInlinkedin.com/company/oteis
• Xx.com/oteisfr

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Oteis