CSTB

What CSTB does

CSTB (Centre Scientifique et Technique du Bâtiment) is a French Établissement Public à caractère Industriel et Commercial (EPIC), established in 1947 and headquartered in Champs-sur-Marne, Île-de-France. It operates as the public scientific and technical centre for the French building sector, delivering a multidisciplinary portfolio spanning energy and environment, structural safety, fire engineering, acoustic performance, indoor air quality, BIM and digital twins, circular economy, and water networks. The organisation employs over 1,000 collaborators across four sites (Marne-la-Vallée, Paris, Sophia Antipolis, Grenoble, Nantes), with capital-intensive testing platforms including the Vulcain fire-resistance platform, a European Acoustic Building Laboratory, and a semi-virtual laboratory capable of simulating up to 2,000 energy-use profiles. CSTB's research output exceeds 20% of its scientific publishing activity and is underpinned by 48 doctoral students, 23 externally co-funded theses, and 20+ framework agreements with academic partners (notably Université Gustave-Eiffel, Mines de Nantes, Lyon, Paris-Dauphine PSL, ETH Zurich, Cerema, CTMNC). It is governed by a 27-member board under government supervision and ranks among the Capital 2024 Top 500 Best Employers in France.

The company monetises through eight integrated service lines: (1) Research & Innovation, (2) Expertise, (3) Testing (Essais), (4) Evaluation, (5) Certification (NF, QB, QB UPEC, ACERMI), (6) CE Marking, (7) Professional Training (in-person, distance, e-learning), and (8) Publishing/editions via the boutique.cstb.fr e-commerce platform. Customers span manufacturers and industrials, project owners, design offices and engineers, building companies and craftspeople, research and education institutions, local authorities, and insurers/technical controllers. Strategic commercial partnerships include Covea (insurance; June 2026) on durable construction repair, and SNCF Gares & Connexions (rail infrastructure) on station design performance. Distribution combines direct enterprise engagement, the proprietary e-boutique, and freely accessible national databases such as the BDNB (Base de Données Nationale des Bâtiments), which contains 400+ data points per building.

Name

CSTB

Legal name

Centre Scientifique et Technique du Bâtiment

Website

https://cstb.fr

Company type

Private

Founded year

1947

Operating status

Operating

Headcount range

501–1,000 employees

Short description

CSTB is a French EPIC founded in 1947 providing research, testing, evaluation, certification, training, and publishing services for the construction sector. It serves manufacturers, project owners, design offices, public authorities, and insurers across France and Europe, with strong regulatory and data assets.

Ownership category

akta.pro rank

Product category

Building Science and Construction Research

NAICS

Testing Laboratories and Services (541380), Scientific Research and Development Services (5417), Research and Development in the Physical, Engineering, and Life Sciences (54171), Architectural, Engineering, and Related Services (5413), Other Scientific and Technical Consulting Services (54169)

SIC

Services-Testing Laboratories (8734), Services-Engineering Services (8711), Services-Commercial Physical & Biological Research (8731), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

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

Keywords

• Building science research
• Construction certification
• Building performance testing
• Construction consulting services
• Building regulatory compliance

Headquarters

HQ city

Champs-sur-marne

HQ country

France

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Research and Expertise Services: Contract research, scientific expertise, and technical consulting for public and private actors in the construction sector, addressing challenges from building to city scale.
2. Evaluation Services: Technical evaluation of products, systems, and processes providing verified information to the market, supporting CE marking and regulatory compliance.
3. Certification and CE Marking: Certification services including NF, QB, QB UPEC, ACERMI marks, delivering quality signals for construction products and services, and CE marking assessments for free movement of products in Europe.
4. Professional Training: Continuing professional training covering BIM and digital twins, energy performance, sustainable renovation, regulations, health and comfort, pathology prevention, smart building, circular economy. Delivered in-person, remote, or e-learning formats.
5. Publications and Editions: Sale of technical and regulatory publications, DTU documents, guides, software tools, and information services through the CSTB e-boutique (boutique.cstb.fr), covering technical regulations, professional guidance, and standards.
6. Testing and Trials: Physical and virtual testing of products, components, and systems across CSTB's experimental platforms (fire, acoustic, energy, structural testing), generating fees for characterisation and performance verification.

Go-to-market motion4 records

Distribution channels4 records

Marketing channels11 records

Core offering

CSTB (Centre Scientifique et Technique du Bâtiment) is a French EPIC providing research, expertise, testing, evaluation, certification (QB, NF, QB UPEC, ACERMI), CE marking, professional training, and technical publishing services to the building and construction sector. It operates proprietary testing laboratories (fire resistance, acoustic, semi-virtual energy, radon) and maintains the BDNB national building database. Its services help construction professionals, manufacturers, project owners, and public authorities navigate regulations (RE 2020, CPR) and bring innovative products and sustainable construction projects to market.

Product overview

CSTB operates as a public research establishment (EPIC) offering an integrated portfolio of 8 core services: Research & Innovation, Expertise, Testing (Essais), Evaluation, Certification (including QB, NF, ACERMI marks), CE Marking, Professional Training, and Publishing. The organization also maintains key digital databases including the Base de Données Nationale des Bâtiments (BDNB) containing 400+ building data points, and Batipédia for technical publishing. CSTB's offerings span from scientific research and product certification to professional training and regulatory publications, serving the construction and building sector across building, neighborhood, city, and territory scales. The organization leverages platforms like the semi-virtual laboratory for testing innovative energy systems and operates the CSTB'Lab incubator for construction startups.

Differentiator

Problem solved

Functional benefit

Brands

• CSTB'Lab: CSTB's startup incubator supporting innovation in the building sector.
• BDNB - Base de Données Nationale des Bâtiments

Products and services

• Recherche et Innovation (Research & Innovation) Research and innovation services creating knowledge for the building sector, including scientific research, technical expertise, and support for innovation from idea to market deployment. Serves construction professionals, manufacturers, and public authorities.
• Expertise (Technical Expertise) Technical expertise services for building sector actors, providing specialised knowledge and consulting to support construction and renovation projects.
• Essais (Testing) Performance characterisation testing services for products, equipment, and structures including fire resistance testing, acoustic testing, and structural analysis. Conducted at CSTB's experimental platforms.
• Évaluation (Technical Evaluation) Technical evaluation services providing verified information on building products, systems, and innovative techniques, supporting market access and regulatory compliance.
• Certification (QB, NF, QB UPEC, ACERMI marks) Quality certification services including QB, QB UPEC, NF, and ACERMI marks that valorise and recognise the quality of construction products and services for the French market.
• Marquage CE (CE Marking) CE marking services enabling free circulation of construction products within the European market by ensuring compliance with EU regulations.
• Formations (Professional Training) Professional training services covering building sector challenges including BIM, digital twins, energy performance, sustainable renovation, regulations, health and comfort, pathology prevention, smart building, and circular economy. Available in-person, distance learning, and e-learning formats.
• Édition (Publishing) Publishing services providing regularly updated regulatory content, technical guides, NF DTU documents, and regulatory software tools through the CSTB e-boutique.
• Base de Données Nationale des Bâtiments (BDNB) National building database containing over 400 data points per building, providing a comprehensive identity card for buildings across France to support energy performance, renovation, and urban planning decisions.
• Batipédia Single portal providing building sector news and CSTB publishing services including Reef, Bati CCTP, and Bati BIBLIO tools.
• Avis Techniques (ATec) Technical Avis issued by CSTB providing assessment of innovative construction techniques not fully covered by existing technical documents.
• Appréciations Techniques d'Expérimentation (ATEx) Technical experimentation assessments for innovative products and systems, facilitating market access for novel construction solutions.

Quantifiable outcome

• 98% of trainees recommend CSTB as an employer/training host
• +4 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

22 partnerships are on record, tiered core and minor.

• CoveacoreStrategic or Co-development Partner · 24 June 2026CSTB and Covea signed a strategic partnership in June 2026 to develop durable repair practices in the construction sector. Covea is a major French insurer, and the partnership aims to accelerate the adoption of sustainable repair and renovation practices across the built environment.
• SNCF Gares & ConnexionscoreStrategic or Co-development PartnerCSTB and SNCF Gares & Connexions jointly developed a building programming tool for designing optimal railway stations, combining CSTB's performance expertise with SNCF G&C's infrastructure requirements to maximise building performance and user comfort.
• ADEME (Agence de la Transition Écologique)coreStrategic or Co-development PartnerADEME co-funds doctoral theses at CSTB, contributing to research on indoor air quality, circular economy indicators, and other sustainability topics. Example: Gabriel Rossignol's thesis on formaldehyde in household products was co-funded by CSTB and ADEME.
• University Gustave-EiffelcoreStrategic or Co-development PartnerOne of the primary academic partners in CSTB's framework agreement network (20+ laboratories). Collaborates on doctoral theses and joint research projects, contributing to CSTB's pluridisciplinary approach to building science.
• École des Mines de Saint-ÉtiennecoreStrategic or Co-development PartnerPartner in the CIFRE doctoral programme. CSTB hosts theses co-supervised with the school, such as Martin RIT's thesis on territorial energy renovation potential (Mines Paris Tech Procédés, Énergies Renouvelables) and Nada BENDAHMANE's thesis on circular economy indicators.
• IngéropcoreStrategic or Co-development PartnerEngineering consultancy Ingérop co-supervises CIFRE theses with CSTB, such as Merveil MUANDA LUTETE's thesis on urban climate adaptation measures, linking CSTB research directly to Ingérop's urban planning project challenges.
• Université de La RochellecoreStrategic or Co-development PartnerPartner laboratory contributing to CSTB's research programme, including in areas of building physics and environmental performance.
• Université de Nantes / École des Mines de NantescoreStrategic or Co-development PartnerKey academic partner in the Nantes region, contributing doctoral students and joint research in areas including thermal comfort, urban planning, and building performance.
• Université de LyoncoreStrategic or Co-development PartnerAcademic partner in the CSTB framework agreement network, contributing research collaboration in building physics, energy systems, and related disciplines.
• Université Paris-Dauphine PSLcoreStrategic or Co-development PartnerAcademic partner in CSTB's network of 20+ framework agreement laboratories, contributing to research in economics, modelling, and urban systems.
• ETH ZurichminorStrategic or Co-development PartnerInternational academic partner hosting CSTB doctoral research. Marin PELLAN's thesis on France's Low-Carbon Strategy for buildings was conducted with ETH Zurich.
• EDF R&DcoreStrategic or Co-development PartnerEDF R&D collaborates with CSTB on the ICARE research project investigating summer comfort in buildings, combining EDF's energy systems expertise with CSTB's building performance research.
• ANSES (Agence Nationale de Sécurité Sanitaire)coreStrategic or Co-development PartnerCSTB and ANSES jointly launched the OQEI (Observatoire de la Qualité de l'Air Intérieur), a unique scientific resource centre in Europe providing shared resources on indoor air quality for public health.
• IMT Nord EuropeminorStrategic or Co-development PartnerMarie-Astrid DUTOIT conducted her doctoral research at IMT Nord Europe on nano- and microplastics in indoor environments, as part of the CSTB doctoral programme.
• Cergy Paris UniversitéminorStrategic or Co-development PartnerChaïma KHATTABI's thesis on alternative treatments to limit fungal growth in indoor environments was conducted with Cergy Paris Université.
• Université de Technologie de Compiègne (UTC)minorStrategic or Co-development PartnerApolline BRISSON's thesis on vibratory propagation in buildings was co-supervised with UTC and RATP, demonstrating collaboration with academic and industrial partners.
• CeremacoreStrategic or Co-development PartnerCerema (Centre d'études et d'expertise sur les risques, l'environnement, la mobilité et l'aménagement) co-supervises doctoral research with CSTB, such as Merveil MUANDA LUTETE's thesis on urban climate adaptation.
• Institut Mines-Télécom LilleminorStrategic or Co-development PartnerGabriel ROSSIGNOL's thesis on formaldehyde in household products and indoor air quality was conducted in collaboration with Institut Mines-Télécom Lille.
• Insa LyonminorStrategic or Co-development PartnerMilena CHABERT's thesis on wastewater sanitation materials was co-supervised with Insa Lyon.
• Nantes UniversitéminorStrategic or Co-development PartnerMerveil MUANDA LUTETE's research continued with Nantes Université, linking to Cerema and Ingérop partnerships.
• Laboratoire Navier (ENPC / Ifsttar / CNRS)coreStrategic or Co-development PartnerÉcole des Ponts ParisTech Navier Laboratory (ENPC/Ifsttar/CNRS) co-supervised Élodie DONVAL's thesis on fire behaviour of natural stone masonry with CTMNC and CSTB.
• CTMNC (Centre Technique de Matériaux Naturels de Construction)coreStrategic or Co-development PartnerCTMNC co-supervises doctoral research on natural stone construction materials with CSTB and the Navier Laboratory (Élodie DONVAL's thesis on fire behaviour of natural stone masonry).

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Fraunhofer Institute for Building Physics (IBP): German applied-research institute focused on building physics, energy efficiency, acoustics, and indoor environment quality. Direct functional peer to CSTB on applied research, laboratory testing, and policy-facing construction science.
• RISE (Research Institutes of Sweden): Swedish state-owned research institute offering testing, certification, and applied research across construction, energy, and materials. Comparable model combining independent testing infrastructure with public-interest mandate and standards authorship.
• Efectis: France-based fire science and fire testing laboratory network spun out of CSTB and other research bodies. Directly comparable on fire-resistance testing, fire engineering expertise, and the Vulcain-equivalent infrastructure for construction-sector fire safety assessments.
• BRE Group (Building Research Establishment): UK-based building science research, testing, certification, and standards organisation operating the BREEAM scheme. Closest international analogue to CSTB: combines independent testing, certification marks, training, publishing, and applied research for the construction sector under a public-interest mandate.
• VTT Technical Research Centre of Finland: Finnish national research institution performing applied R&D, testing, and certification across built environment, energy, and materials. Comparable public-mandate research-and-testing operating model.

Broad incumbents

• TÜV Rheinland: German-headquartered TIC major offering testing, inspection, and certification services across industrial, product, and construction domains. Overlaps with CSTB in construction-product certification and CE marking with broader international reach.
• SGS: One of the world's largest TIC companies, providing testing, inspection, and certification services across multiple industries including construction. Directly competes with CSTB in construction product certification and CE marking, but with a globally diversified portfolio.
• Bureau Veritas: Global leader in Testing, Inspection and Certification (TIC) services. Overlaps with CSTB in construction product certification, CE marking, and building-related testing services, but operates across TIC verticals (marine, oil & gas, agri-food) at a far larger global scale.

Regional players

• Cerema: French public agency for expertise on environmental, mobility, and territorial planning risks. Adjacent peer sharing CSTB's public-interest scientific mission and co-supervising doctoral theses, but focused on infrastructure and territory rather than buildings per se.
• LNE (Laboratoire National de métrologie et d'Essais): French national metrology and testing laboratory providing accredited testing and certification services. Comparable in operating model (French EPIC-equivalent public institution, accredited ISO 17025 laboratory operations) and partially overlapping testing services for industrial and construction products.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/cstbfr
• Facebookfacebook.com/CSTB.fr
• LinkedInfr.linkedin.com/company/cstb
• Xx.com/cstb_fr

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 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 CSTB