What Les Maçons Parisiens does

Les Maçons Parisiens is a French worker cooperative (Société Coopérative et Participative, SCOP) founded in 1930 and headquartered in Massy (Essonne). Operating exclusively in the Île-de-France region, the firm functions as a general contractor (Entreprise Générale du Bâtiment) for collective building construction, delivering projects in housing (collective, social, student, senior), office buildings, public facilities, and healthcare (hospitals, clinics, medical research, specialized care homes). Projects are executed under three contract modalities — full Entreprise Générale, macro-lots (structural work plus weatherproofing), or structural-only lots séparés (gros œuvre seul) — chosen according to client (Maître d'ouvrage) requirements.

The firm's technical core is reinforced and prestressed concrete construction (béton armé and béton précontraint), supported by QUALIBAT certifications at superior (2113, 2213) and confirmed (2242) technical levels, an internal prefabrication plant (Usine de préfabrication) for reinforced concrete elements, and an integrated organization spanning Ingénieurs Travaux, Chefs de chantier, production teams, planning, design office, methods, procurement, logistics, and equipment service. ISO 9001:2015 quality management certification has been maintained since 2006 (delivered by CERTIBAT). In December 2011, Le Moniteur awarded the firm the 'Prix spécial 10 ans' as the most performing French construction company of the preceding decade.

Revenue is generated exclusively through project-specific construction contracts, awarded via competitive tendering (public procurement) and direct negotiation with property developers (ICADE, BOUYGUES Immobilier, SOGEPROM, TERRALIA, DOMNIS, SEQENS, BATIGERE), public housing operators (LOGIREP, IMMOBILIERE 3F, VALOPHIS), institutions (UPEC), and foundations (Fondation LEOPOLD BELLAN). Pricing is custom per project; no standard pricing model exists. The cooperative ownership model enables meritorious collaborators to become sociétaires (associates) participating in governance, distinguishing the firm structurally from conventional contractors. Revenue, headcount, and financial metrics are not publicly disclosed.

Name

Les Maçons Parisiens

Legal name

Les Maçons Parisiens

Website

https://lesmaconsparisiens.fr

Company type

Private

Founded year

1930

Operating status

Operating

Headcount range

101–250 employees

Short description

Les Maçons Parisiens is a French worker cooperative (SCOP) founded in 1930, operating as a general contractor for collective building construction in Île-de-France. It delivers housing, office, public facility, and healthcare projects with in-house reinforced-concrete prefabrication and QUALIBAT-certified technical capability.

Ownership category

akta.pro rank

Product category

General Building Construction Services

NAICS

Commercial and Institutional Building Construction (236220), Construction of Buildings (236)

SIC

General Bldg Contractors - Nonresidential Bldgs (1540), Operative Builders (1531)

akta.pro primary industry

Commercial General Contracting (New Build) (IMAFAAAA)

akta.pro secondary industries

Office & Corporate Building Construction (IMAFACAA), Government & Civic Building Construction (Courthouses, City Halls, Public Safety) (IMAFACAF)

Keywords

• General construction contracting
• Reinforced concrete construction
• Collective building construction
• Structural works contractor
• Prefabricated concrete elements

Headquarters

HQ city

Massy

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. General contracting (Entreprise Générale): Full-service general contractor for construction projects including coordination of all trades, from design support through final delivery. Projects encompass collective housing, office buildings, public facilities, healthcare, and social housing.
2. Structural works (Gros œuvre - Lots séparés): Specialized structural works contracts covering only the structural frame (béton armé/béton armé et béton précontraint), delivered as standalone contracts separate from complete building projects.
3. Macro-lots (Macro-lots): Intermediate contracting model combining structural and some finishing works, positioned between full general contracting and individual trade packages.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Les Maçons Parisiens is a general contractor (Entreprise Générale du Bâtiment) delivering collective building construction in Île-de-France since 1930. Projects cover residential housing, office buildings, public facilities, healthcare facilities, and social housing, executed as general contractor, macro-lots, or stand-alone structural works (gros œuvre/lots séparés). The firm also operates an in-house prefabrication plant for reinforced concrete elements and maintains integrated planning, design, methods, procurement, logistics, and equipment capabilities.

Product overview

Les Maçons Parisiens is a general construction company (Entreprise Générale du Bâtiment) founded in 1930, operating as a SCOP (cooperative society). The company offers a unified portfolio of construction services centered on collective building construction in Île-de-France. Core offerings include general contractor services for residential housing, office buildings, public facilities, healthcare buildings, and social housing, supplemented by specialized structural work (gros œuvre) and prefabricated reinforced concrete element manufacturing. The company also provides project management, planning, studies, methods, purchasing, and logistics support services internally.

Differentiator

Problem solved

Functional benefit

Products and services

• Entreprise Générale du Bâtiment (General Construction Contracting) Full-service general contractor for collective building construction projects in Île-de-France, covering residential housing, office buildings, public facilities, healthcare facilities, and social housing. Projects can be executed as full general contractor or coordinated into separate lots based on client requirements.
• Gros Œuvre (Structural Works / Lots Séparés) Specialized structural works contracts covering only the structural frame (reinforced concrete and prestressed concrete) for construction projects, delivered as standalone contracts separate from complete building projects. Targeted at property developers and public clients needing only the structural shell.
• Macro-Lots Gros Œuvre et Clos Couvert Intermediate contracting model combining structural framework and exterior envelope completion (clos couvert) for buildings, positioned between full general contracting and individual trade packages. Designed for clients seeking partial scope with integrated coordination.
• Éléments Béton Armé Préfabriqués (Prefabricated Reinforced Concrete Elements)

Quantifiable outcome

• Le Moniteur recognized Les Maçons Parisiens as the most performing French construction company of the last decade with the 'Prix spécial 10 ans' in December 2011

Named customers14 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

Feature5 records

Partnerships

Six partnerships are on record, tiered core and minor.

• CERTIBATcoreOthersQuality certification body that delivers ISO 9001:2015 certification to Les Maçons Parisiens, validating their quality management system and continuous improvement processes.
• QUALIBATcoreOthersNational qualification organization for construction trades. Les Maçons Parisiens holds QUALIBAT certifications 2113, 2213, and 2242 for superior and confirmed technical capabilities in masonry and reinforced concrete construction.
• Fondation du PatrimoineminorStrategic or Co-development PartnerHeritage foundation through which Les Maçons Parisiens participates in restoration of heritage buildings, demonstrating commitment to preserving architectural heritage.
• Abbaye de LagrasseminorStrategic or Co-development PartnerHistoric abbey in the heart of Cathar country where Les Maçons Parisiens directly contributes to restoration work as part of their heritage preservation efforts.
• UCIAB CooperativesminorStrategic or Co-development PartnerAgricultural cooperatives in Burkina Faso supported by Les Maçons Parisiens for several years as part of humanitarian efforts supporting economic development in the poorest countries.
• BabyloanminorStrategic or Co-development PartnerMicrofinance platform through which Les Maçons Parisiens engages in microcredit financing, supporting economic development in developing countries.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Eiffage Construction: Major French construction subsidiary of Eiffage group, active in residential, commercial, and public building construction across France. Directly competes for similar developer-led collective housing and commercial projects, with larger geographic and capital footprint.
• Bouygues Construction: Major French general contractor and developer covering commercial, residential, and public infrastructure projects nationally and internationally. Comparable as a French general contractor serving institutional and developer clients, but operates at vastly greater scale and broader geography.
• Spie Batignolles: Independent French general contractor covering building, civil works, and infrastructure nationwide. Comparable as a multi-regional French GC competing for housing, office, and public-sector tenders, though with broader geographic and segment reach.
• Vinci Construction: Largest French construction group, including Vinci Construction France which delivers commercial, residential, and civil works across France. Direct overlap on collective building construction in Île-de-France and similar client base (developers, public authorities), but at national/international scale.

Direct peers

• Demathieu Bard: Mid-sized French general contractor active in building and civil engineering, including housing, healthcare, and public infrastructure. Comparable in scale and project mix, though with broader national footprint and stronger civil works exposure.
• Rabot Dutilleul: Northern-France-based general contractor delivering housing, commercial, and public building construction. Similar mid-tier regional GC profile with comparable client base of property developers and public authorities.
• Léon Grosse: Family-owned French general contractor specializing in building construction (housing, offices, public facilities) with strong presence in Île-de-France and major French cities. Closest direct peer given similar size, regional concentration, and collective-building focus.
• Fayat Bâtiment: Building construction arm of the Fayat group, delivering commercial, residential, and public-sector projects in France. Comparable as a mid-sized French general contractor with regional multi-trade building capability.
• Groupe Legendre: Independent French construction group covering building, public works, and real estate development, with significant Île-de-France operations. Comparable mid-sized regional GC competing on similar collective housing and commercial tenders.
• GCC (Générale de Construction et de Carottage): French general contractor focused on housing, offices, and public facilities across multiple French regions including Île-de-France. Closely comparable in project types, client base, and regional-vs-national positioning.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/maconsparisiens
• YouTubeyoutube.com/@lesmaconsparisiens
• Facebookfacebook.com/lesmaconsparisiens
• LinkedInlinkedin.com/company/7296896
• Instagraminstagram.com/lesmaconsparisiens

Compliance3 records

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 Les Maçons Parisiens