GMH Groupement des Entreprises de Restauration de Monuments Historiques

What GMH Groupement des Entreprises de Restauration de Monuments Historiques does

GMH (Groupement des Entreprises de Restauration de Monuments Historiques) is a French professional federation founded in 1960 and headquartered in Paris's 16th arrondissement. Operating as an association under French law (loi 1901) and affiliated with the Fédération Française du Bâtiment (FFB), it represents companies specialized in the restoration of France's classified historic monuments. The organization functions as the central procurement channel connecting public and private monument owners with a curated network of 40+ pre-qualified member companies across 12 heritage trades — including stone cutting, carpentry, roofing, sculpture, glazing, ironwork, and decorative painting.

The core platform consists of four interlocking assets: (1) a searchable online directory of member companies filterable by trade and region across all 13 French metropolitan regions; (2) the QUALIBAT MH qualification system validating heritage restoration expertise; (3) training program delivery, including the BP TPAMH vocational diploma (recognized by the Education Nationale, 539 hours/year, 100% graduate employment rate) delivered through partner institutions such as CFA Saint Lambert and Lycée Hector Guimard; and (4) the quadrennial High-Tech & Patrimoine colloquium, which convenes heritage professionals, CNRS researchers, ICOMOS France, and the Ministère de la Culture to discuss technological innovation including 3D digitization, AI applications, and climate resilience. Member-company projects span landmarks such as Château de Versailles, Cathédrale Notre-Dame de Paris, Hôtel Matignon, Mont-Saint-Michel, and the Aqueduc de Roquefavour.

The revenue model combines recurring membership dues from restoration companies with fees from training programs and knowledge events. Pricing is not publicly disclosed. The organization is led by co-presidents Richard Boyer and Thomas George and operates with a lean central staff of 14 employees, with operational capacity delivered primarily through its member network and educational partners. Distribution is domestic-only (Metropolitan France), with no disclosed international footprint or app/API surface.

Name

GMH Groupement des Entreprises de Restauration de Monuments Historiques

Legal name

Groupement des Entreprises de Restauration de Monuments Historiques

Website

https://groupement-mh.org

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

GMH is a French professional federation founded in 1960 that connects public and private historic monument owners with a curated network of 40+ pre-qualified heritage restoration companies across 12 trades, and delivers the BP TPAMH vocational diploma and the quadrennial High-Tech & Patrimoine colloquium.

Ownership category

akta.pro rank

Headquarters

HQ city

Paris

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, Others

Revenue model

1. Membership Dues: The GMH generates revenue through membership fees from specialized restoration companies. Member companies gain access to the GMH network, qualification systems, training programs, and promotional opportunities through the organization's platform.
2. Professional Training Programs: The organization manages and facilitates professional training programs including the BP Tailleur de Pierre Monuments Historiques diploma, continuing education through GRETA CDMA, and specialized certifications. Training is delivered through partner educational institutions including CFA Saint Lambert, Lycée Hector Guimard, and other specialized schools.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

GMH is a French professional federation (association loi 1901) representing companies specialized in the restoration of classified historic monuments. It sells membership and qualification services to restoration firms, operates a searchable national directory of Qualibat MH-certified contractors across 12 heritage trades, coordinates heritage-craft training programs including the BP TPAMH diploma, and convenes industry events such as the High-Tech & Patrimoine colloquium and Rubans du Patrimoine awards.

Product overview

GMH Groupement des Entreprises de Restauration de Monuments Historiques is a professional association representing France's most qualified heritage restoration companies. The organization operates a unified platform of services consisting of: a searchable directory of member companies qualified in 12 heritage trades (tailleur de pierre, charpentier, couvreur, etc.); the BP TPAMH vocational diploma program in stone cutting for historic monuments delivered through partner training centers; QUALIBAT MH qualification management; the quadrennial High-Tech & Patrimoine innovation conference; and comprehensive training program listings across heritage professions. The organization serves as a central hub connecting property owners, public institutions, and contractors with specialized restoration expertise.

Differentiator

Problem solved

Functional benefit

Products and services

• Répertoire d'entreprises qualifiées Monuments Historiques Online searchable directory of Qualibat MH-certified heritage restoration companies, filterable by trade (tailleur de pierre, charpentier, couvreur, sculpteur, maître verrier, ferronnier, marbrier, staffeur-stucateur, peintre en décor, doreur, restaurateur de parquets, menuisier-ébéniste) and by French region; for monument owners and procurement officers needing pre-qualified specialists.
• Diplôme BP TPAMH (Brevet Professionnel Tailleur de Pierre / Appareilleur des Monuments Historiques) Level 4 vocational diploma in stone cutting and fitting for historic monuments, two-year alternating program (539 hours/year) delivered through partner schools (CFA du Bâtiment Saint Lambert, Lycée Professionnel Hector Guimard, Lycée Professionnel Camille Claudel) and certified by the French Education Nationale; for apprentices pursuing heritage-craft careers.
• Qualifications et Savoir-faire d'Excellence (Qualibat MH) Qualibat MH qualification management service for member restoration companies, validating exceptional expertise in specific heritage trades and materials; for contractors seeking pre-qualification status recognized by public and private monument owners.
• Colloque High-Tech & Patrimoine Quadrennial industry conference organized by GMH that convenes heritage professionals, researchers and public stakeholders (Ministère de la Culture, CNRS, ICOMOS France) to discuss technological innovations in monument restoration; for member companies, public institutions and research partners.
• Formations aux Métiers du Patrimoine Curated catalogue of heritage-craft training programs covering 12 trades including mason-stone cutter, carpenter, roofer, sculptor, maître verrier, plasterer-stuccoist, blacksmith, decorative painter, gilder, marble worker and parquet restorer; delivered through GMH partner institutions including GRETA CDMA and Lycée Lucas de Nehou.

Quantifiable outcome

• 100% employment rate for BPMH graduates in specialized monument restoration companies
• +1 more outcomes

Named customers5 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

Feature1 record

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Fédération Française du Bâtiment (FFB)coreStrategic or Co-development PartnerThe GMH is affiliated with the Fédération Française du Bâtiment, the principal French professional organization for the construction industry. This affiliation provides GMH with institutional support, networking opportunities, and alignment with broader construction sector policies and standards.
• Education NationalecoreStrategic or Co-development PartnerThe GMH works with the national Education Ministry to deliver the BP Tailleur de Pierre / Appareilleur des Monuments Historiques diploma, a level 4 certification recognized by the Education Nationale and awarded through official examinations.
• CFA du Bâtiment Saint LambertcoreImplementation/ SI/ Consulting PartnerPrimary training partner delivering the BP Tailleur de Pierre MH program. Located in Paris 15th arrondissement, the center provides hands-on training combined with workplace learning for apprentice stone masons.
• Lycée Professionnel Hector GuimardcoreImplementation/ SI/ Consulting PartnerTraining partner for the BP Tailleur de Pierre MH program, located in Paris 19th arrondissement. Provides professional education in heritage stone cutting and related trades.
• Lycée Professionnel Camille ClaudelcoreImplementation/ SI/ Consulting PartnerTraining partner specializing in stone, marble, and sculpture trades. Located in Remiremont, it is the unique French center offering a complete set of industrial, artisanal, and artistic training in stone-related heritage crafts.
• GRETA CDMA (GRETA de la Création, du Design et des Métiers d'Art)coreImplementation/ SI/ Consulting PartnerAdult education consortium offering over 200 professional training programs including 20+ in heritage wood and glass trades. Operates in 13 public institutions in Paris, offering evening, daytime, full-time, and e-learning formats.
• Lycée Lucas de NehouminorImplementation/ SI/ Consulting PartnerTraining partner for glass arts including CAP Arts et technique du verre options for vitrailliste and décorateur sur verre, and FCIL painting on glass programs.
• QualibatcoreStrategic or Co-development PartnerGMH member companies are qualified under Qualibat MH (Monuments Historiques) certification system, providing standardized quality assurance for heritage restoration work.
• Ministère de la CulturecoreStrategic or Co-development PartnerGovernment ministry responsible for heritage policy. Representatives including Judith Kagan (conservateur général du patrimoine) participate in GMH's High-Tech & Patrimoine colloquium, addressing climate adaptation and heritage policy challenges.
• ICOMOS FrancecoreStrategic or Co-development PartnerInternational Council on Monuments and Sites French national committee. Secretary General Ann Bourgès participates in GMH events, contributing scientific expertise to heritage conservation discussions.
• CNRS (Centre National de la Recherche Scientifique)coreStrategic or Co-development PartnerFrance's national research agency. Researchers including Livio de Luca serve as grand témoins (keynote speakers) at GMH colloquiums, bringing scientific expertise in heritage engineering and digitalization.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Compagnons du Devoir: French craftsmanship guild with a journeyman-based apprenticeship and training model across heritage trades (masonry, carpentry, roofing); comparable in its mission of training craftspeople for traditional and heritage building trades and its role as a national training pipeline.
• Fédération Française du Bâtiment (FFB): GMH's direct umbrella federation for the French construction sector; structurally analogous as a national trade federation representing building contractors and providing institutional advocacy, training coordination, and policy engagement for member firms.
• Qualibat: French construction qualification body that administers the Qualibat MH certification used by GMH member companies; directly comparable as a certification/qualification provider that gates quality standards in the French building trades.
• APT International (Association for Preservation Technology): International professional association dedicated to promoting the best technology for conserving historic structures; comparable as a global peer federation bringing together heritage preservation practitioners, technologists, and educators.
• Fondation du Patrimoine: French heritage preservation foundation focused on funding and advocating for restoration of historic buildings; comparable in operating environment (French heritage ecosystem, public monument owners, member/proponent network) and overlapping customer base with GMH's member companies.
• ICOMOS France: French national committee of the International Council on Monuments and Sites; directly comparable as a heritage-sector professional body providing scientific expertise, advocacy, and policy engagement that GMH also engages with on the contractor/practitioner side.
• CAPEB (Confédération de l'Artisanat et des Petites Entreprises du Bâtiment): French federation of artisan building trades; directly comparable model — a national professional association aggregating small specialist contractors, providing qualification frameworks, training pathways, and representation to public authorities across building trades.

Regional players

• IHBC (Institute of Historic Building Conservation): UK-based professional body for practitioners working with the historic built environment; structurally analogous as a membership organization setting competency standards and convening training/events in heritage conservation, but operating in a different national jurisdiction.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/groupementmh
• LinkedInlinkedin.com/company/gmh-restauration-monuments-historiques-patrimoine

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 GMH Groupement des Entreprises de Restauration de Monuments Historiques