Epamsa

What Epamsa does

EPAMSA (Établissement Public d'Aménagement du Mantois Seine Aval) is a French public development establishment created by decree of the Conseil d'État in 1996, headquartered at 1 rue de Champagne, Mantes-la-Jolie (78200). It operates as the statutory project director for the Opération d'Intérêt National (OIN) Seine Aval, a national-interest territory covering 51 communes and two intercommunalities in the Yvelines département of Île-de-France. The agency was originally constituted to execute the "Mantes-en-Yvelines" urban renovation project, subsequently took direction of the Grand Projet de Ville of Chanteloup-les-Vignes (2000), was entrusted with OIN Seine Aval leadership via a protocol signed 31 January 2008, and saw its perimeter expanded on 1 January 2016 with the creation of the Communauté urbaine Grand Paris Seine & Oise (GPS&O). EPAMSA's core business is end-to-end urban development project management on behalf of public authorities. Its portfolio spans ten active operations and eight delegated mandates, encompassing eco-districts (Carrières Centralité, 47 ha; Les Hauts de Rangiport, 11.6 ha; Cœur de Ville Bonnières), economic activity zones (Écopôle Seine Aval, 200 ha; Mantes Innovaparc, 58 ha), multimodal hubs (Mantes Université, 75 ha), urban renewal programs (PRU du Mantois, Quartier La Noé), and two pedestrian bridges over the Seine (Poissy/Carrières-sous-Poissy and Mantes-la-Jolie/Limay). The underlying capability set is domain expertise in land acquisition, infrastructure development, public space creation, eco-district certification (EcoQuartier label), and execution of delegated public project management mandates — there is no proprietary software or technology product. EPAMSA reports a 500M€ balance sheet, with 13,000 housing units planned (30% delivered or in progress), 870,000 m² of development land, and 180,000 m² of public/commercial space.

EPAMSA is funded through a hybrid public model: contributions from the French State, Région Île-de-France, Département des Yvelines, Communauté urbaine GPS&O, and Communauté de communes des Portes de l'Île-de-France; programmatic grants from ANRU, ANAH, and ADEME; and land development revenues from the sale of building rights to private developers and investors under Cahier des Charges specifications. No commercial pricing applies. The entity is governed by a board presided by Pierre Bédier (President of the Conseil Départemental des Yvelines), with Damien Behr as interim Director General (since March 2024) and Emmanuelle Cerdelli as Deputy Director General for Development. Daniela Pennini was hired in June 2020 as Director of Urban Renewal and Development Strategy. EPAMSA is not a commercial enterprise: it is not listed, has no parent company, no subsidiaries, no M&A history, and no funding rounds. Its customer base consists of public authorities, and it competes only with other French EPAs (none currently hold the OIN Seine Aval mandate).

Name

Epamsa

Legal name

Établissement Public d'Aménagement du Mantois Seine Aval

Website

https://epamsa.fr

Company type

Public

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

EPAMSA is a French public development establishment created by government decree in 1996 to manage urban development across 51 communes in the Mantois Seine Aval territory of Île-de-France. It executes urban renewal, eco-district, and public infrastructure projects on behalf of the French State and local authorities.

Ownership category

akta.pro rank

Product category

Public Urban Development and Land Development Services

NAICS

Administration of Urban Planning and Community and Rural Development (925120), Administration of Housing Programs, Urban Planning, and Community Development (925), Landscape Architectural Services (54132)

SIC

Land Subdividers & Developers (No Cemeteries) (6552)

akta.pro primary industry

Landscape Architecture & Site Design (BPAHAKAC)

Keywords

• Urban development services
• Public land development
• Territorial planning
• Sustainable urban renewal
• Public infrastructure projects

Headquarters

HQ city

Mantes-la-jolie

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Distribution channels3 records

Marketing channels6 records

Core offering

EPAMSA is a French public development establishment (établissement public d'aménagement) that manages complex urban development projects across the 51-commune Mantois Seine Aval territory in Île-de-France. It acquires land, develops public infrastructure and eco-districts, creates public spaces and pedestrian bridges, and sells building rights to private developers on behalf of the French State, the Île-de-France Region, the Yvelines Department, and intercommunal authorities, acting as project director of the Opération d'Intérêt National (OIN) Seine Aval.

Product overview

Epamsa is a French public urban development establishment (Etablissement Public d'Aménagement) operating in the Mantois Seine Aval territory. Rather than a software technology company, Epamsa delivers urban planning services and manages a portfolio of urban development projects including ZAC (concerted development zones), urban renewal operations, pedestrian bridges, and real estate investments. The main project portfolio includes Carrières Centralité (eco-district), Mantes Université (train station district), Écopôle Seine Aval (economic zone), Mantes Innovaparc (business park), Les Hauts de Rangiport (mixed-use district), and Cœur de Ville Bonnières (city center revitalization). Infrastructure projects include two pedestrian bridges over the Seine connecting Mantes-la-Jolie/Limay and Poissy/Carrières-sous-Poissy. Epamsa also manages real estate assets including the Fabrique 21 eco-construction incubator and conducts innovation programs in sustainable mobility and energy efficiency.

Differentiator

Problem solved

Functional benefit

Products and services

• Carrières Centralité

Quantifiable outcome

• Val Fourré eco-district received EcoQuartier label in December 2015
• +3 more outcomes

Segments4 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

15 partnerships are on record, tiered core, major and minor.

• Communauté urbaine Grand Paris Seine & Oise (GPS&O)coreStrategic or Co-development Partner · 31 January 2008GPS&O is the primary territorial authority partner. EPAMSA serves as project director for OIN Seine Aval on this territory and conducts mandates for the community including urban development operations, pedestrian bridges, and public infrastructure.
• Communauté de communes des Portes de l'Ile-de-FrancecoreStrategic or Co-development Partner · 31 January 2008Second intercommunal partner within EPAMSA's operational territory, collaborating on territorial development projects.
• State (French Government)coreStrategic or Co-development PartnerGovernment partner establishing the OIN Seine Aval through decree, providing institutional framework and funding for major development projects.
• Région Île-de-FrancecoreStrategic or Co-development PartnerRegional authority providing funding and strategic direction for development projects within the Île-de-France region.
• Conseil Départemental des YvelinescoreStrategic or Co-development PartnerDepartmental council providing funding and political support for Yvelines territory development, with President Pierre Bédier serving as EPAMSA board president.
• EPFIF (Etablissement Public Foncier d'Ile-de-France)coreStrategic or Co-development PartnerPublic land agency of Île-de-France providing support for land acquisition in development operations.
• 51 Municipalities of Seine AvalcoreStrategic or Co-development PartnerNetwork of 51 communes within the OIN Seine Aval territory including major municipalities such as Mantes-la-Jolie, Poissy, Carrières-sous-Poissy, Gargenville, and others.
• Social Housing Providers (Bailleurs sociaux)majorStrategic or Co-development PartnerSocial housing organizations including IRP, I3F, OPIEVOY partnering on housing renovation and development projects.
• Industrial Partners (Renault, Schneider, Vinci, Total)minorStrategic or Co-development PartnerMajor industrial companies participating in SAVE (Seine Aval Véhicules Electriques) experiment for electric mobility innovation in 2011-2012.
• DalkiamajorStrategic or Co-development PartnerEnergy company providing biomass district heating system achieving 70% renewable energy for approximately 1,000 homes in Beauregard at Carrières Centralité.
• CCI (Chambre de Commerce et d'Industrie)minorStrategic or Co-development PartnerChamber of Commerce and Industry participating as economic development partner in the Seine Aval territory.
• HAROPA (Ports)minorStrategic or Co-development PartnerPort authority partner for multimodal logistics and potential river freight access at Ecopôle Seine Aval.
• Choose Paris RegionminorGTM or Marketing PartnerRegional economic development agency promoting the territory at international events including MIPIM.
• DIRECCTEminorStrategic or Co-development PartnerRegional directorate participating in Performance PME program supporting SME development in Seine Aval.
• SMSO (Syndicat Mixte Seine Ouest)coreStrategic or Co-development PartnerSyndicate co-committing pedestrian bridge projects between Poissy/Carrières-sous-Poissy and Mantes-la-Jolie/Limay, with EPAMSA as delegated project manager.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• EPA Paris-Saclay: French Établissement Public d'Aménagement governing the Paris-Saclay cluster development. Directly comparable to EPAMSA as a state-created EPA with an exclusive territorial development mandate, similar operational model (land acquisition, infrastructure delivery, sale of building rights to developers), and analogous governance structure linking state, regional, and local authorities.
• EPA Bordeaux Euratlantique: French EPA overseeing the Bordeaux Euratlantique urban development operation. Mirrors EPAMSA's mandate as a public establishment directing a large-scale Opération d'Intérêt National, with comparable scale of budget, housing units, and economic activity zones, and similar eco-district sustainability orientation.
• EPA Orly Rungis: French EPA managing the Orly Rungis development territory south of Paris around the airport hub. Comparable to EPAMSA in its Île-de-France footprint, EPA governance structure, and mandate to deliver housing, economic development, and transport-linked urban transformation.
• EPA Euroméditerranée: French EPA responsible for the Euroméditerranée urban renewal project in Marseille. Closely comparable to EPAMSA in mandate (OIN-backed urban transformation of a post-industrial waterfront), toolset (land acquisition, infrastructure, developer partnerships), and partnership structure with state, region, and municipalities.
• Grand Paris Aménagement: French public land and development agency (formerly EPA Plaine de France) operating across multiple territories in Île-de-France. Directly comparable to EPAMSA as a public development establishment delivering housing, economic activity zones, and urban renewal through land acquisition and infrastructure delivery.
• EPA Marne-Europe: French EPA (formerly EPA La Défense Seine Arche) responsible for the Marne-Europe development territory east of Paris. Directly comparable to EPAMSA as a state-established EPA with an exclusive mandate for territorial development, delivering mixed-use districts, economic zones, and infrastructure on a multi-decade horizon.
• EPA Sénart: French EPA responsible for the Sénart new town development in Seine-et-Marne. Directly comparable to EPAMSA as a multi-decade EPA with a mandate to deliver housing, economic activity zones, and infrastructure in the Île-de-France region, with similar reliance on intercommunal and state funding.
• EPA Nice Écovallée: French EPA driving the Nice Écovallée eco-valley operation along the Var river. Comparable to EPAMSA in its explicit eco-district positioning, public mandate to convert industrial/riverfront land, and mix of housing, economic activity, and infrastructure delivery.

Broad incumbents

• Société du Grand Paris: French public establishment responsible for the Grand Paris Express metro project and associated urban development. Comparable to EPAMSA as a state-established public entity governing large-scale infrastructure-driven urban transformation in the same Île-de-France region, with overlapping transit-oriented development objectives at sites like Mantes Université.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/Epamsa
• LinkedInlinkedin.com/company/epamsa

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Epamsa