What Sonadev does

Sonadev is a public development company (SEM/SPL) founded in 1971 in Saint-Nazaire, France, restructured as a groupement in 2003 at the initiative of CARENE (Saint-Nazaire agglomeration). The group comprises three legal entities: SONADEV S.A. d'économie mixte (capital €5,111,536), SONADEV Territoires Publics SPL (capital €450,000), and SONADEV GIE. Sonadev delivers integrated urban development services across the Saint-Nazaire agglomeration, operating as both master developer under public concessions and direct seller of residential and commercial real estate. Its product portfolio spans new apartment sales, building plot sales, office and commercial space rental, activity cell rental (ActiBrais 1–4 business villages), and major urban renewal operations including Moulin du Pé (~460 dwellings, 2026), Kerlédé, La Trébale, Grenapin, and the Courtil-Brécard eco-neighborhood (ÉcoQuartier label, delivered 2018). The firm also runs the ActiDonges business village and the ActiSun business support service for site selection and settlement.

Sonadev serves three primary customer segments: individual homebuyers (including PSLA-assisted ownership), local SMBs and artisans seeking commercial or activity premises, and the municipalities of CARENE and surrounding communes acting as public contracting authorities for urban development concessions and 25-year city center redynamization missions. The company reported 89 property sales in 2022 and employs 34 collaborators across project direction, operations, finance, communications, and commercial functions. Distribution is conducted through a single commercial service (guichet unique) launched in 2022, alongside direct sales channels and public consultations for major projects.

The revenue model combines one-time property development sales (residential apartments, building plots, commercial land), recurring rental income from business villages and managed activity parks, and professional services fees from public equipment construction and redynamization missions. Notable partnerships include CARENE as principal shareholder, Banque des Territoires and CCI Nantes-St-Nazaire as joint venture partners in the upcoming SAS patrimoniale, Action Logement, and Silène (social housing operator). Sonadev is not a technology company; its competitive differentiation rests on its public-mandate legal status, integrated groupement structure, and demonstrated credentials in sustainable and wood-construction rehabilitation (2018 Trophée des EPL, Prix régional de la Construction bois).

Name

Sonadev

Legal name

SONADEV

Website

https://sonadev.fr

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

11–50 employees

Short description

Sonadev is a public development company (SEM/SPL) in Saint-Nazaire, France, delivering integrated urban development, residential property sales, and business village rental for individuals, local SMBs, and the municipalities of the CARENE agglomeration under public concessions.

Ownership category

akta.pro rank

Product category

Real Estate Development Services

NAICS

Land Subdivision (23721), New Housing For-Sale Builders (236117), New Multifamily Housing Construction (except For-Sale Builders) (236116), Commercial and Institutional Building Construction (23622), Administration of Urban Planning and Community and Rural Development (925120)

SIC

Land Subdividers & Developers (No Cemeteries) (6552), General Bldg Contractors - Residential Bldgs (1520), Real Estate Agents & Managers (For Others) (6531)

akta.pro primary industry

Residential Land Development & Subdivision Homebuilding (Build-to-Sell Communities) (IMAFABAL)

akta.pro secondary industries

State/Provincial Housing, Urban/Regional Planning & Community Development (BPAIABAM), Community Development & Neighborhood Revitalization (CDBG, Place-Based Initiatives) (BPAIANAE), Housing Development, Construction & Rehabilitation Programs (BPAIANAB), Economic Development & Business Licensing (Local) (BPAIACAN)

Keywords

• Urban real estate development
• Residential property sales
• Commercial real estate leasing
• Public development company
• Business park management

Headquarters

HQ city

Saint-nazaire

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Property Development and Sales: Development and sale of residential properties (apartments, land plots) and commercial/enterprise properties (offices, commercial spaces, activity cells) through urban development concessions granted by local authorities.
2. Rental Income from Business Villages: Rental of activity cells and business premises in managed activity parks (ActiBrais villages), providing flexible space solutions for artisans, small industries, and service businesses.
3. Commercial Redynamization Services: Acquisition, renovation, and portage of commercial spaces in city centers to support local economic development, working on behalf of municipalities under 25-year missions.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Sonadev is a local public development company (SEM/SPL groupement) that develops, constructs, and markets residential and commercial real estate in the Saint-Nazaire agglomeration. It sells apartments and building plots to individuals, rents offices, commercial premises, and activity spaces to businesses, manages business villages (ActiBrais), and delivers public infrastructure and urban renewal projects on behalf of CARENE and partner municipalities.

Product overview

Sonadev is a public development company (SEM/SPL) operating in the Saint-Nazaire agglomeration, structured as a groupement comprising SEM Sonadev, SPL Sonadev Territoires Publics, and GIE Sonadev. The company offers a portfolio of real estate and territorial development services organized into three main categories: (1) Individual real estate services including apartment sales and building plot sales, with programs like PSLA for assisted homeownership; (2) Business real estate services including office, commercial space, and activity space rental and sales; and (3) Business support services including ActiSun consulting, activity park management, and room rental. Key product lines include residential projects (Résidence Mystik, Elektra, Oktopus, Le Carrousel), business villages (ActiBrais 1-4), major urban operations (Moulin du Pé, Grenapin, Kerlédé, La Trébale), and eco-neighborhood developments (Courtil-Brécard). The company operates under public development mandates from CARENE and partner municipalities.

Differentiator

Problem solved

Functional benefit

Products and services

• Apartment Sales (Vente d'appartements)

Named customers4 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

Partnerships

Five partnerships are on record, tiered strategic, core and regular.

• CCI Nantes-St-NazairestrategicStrategic or Co-development Partner · 1 January 2023Chambre de Commerce et d'Industrie Nantes-St-Nazaire is partnering in the creation of a SAS patrimoniale with Sonadev and Banque des Territoires for expanded real estate development.
• CARENE (Saint-Nazaire agglomération)coreStrategic or Co-development Partner · 1 January 2003CARENE (Saint-Nazaire agglomération) is the main shareholder and principal partner of the Sonadev group. The agglomeration relaunched Sonadev in 2003 to serve as its development tool, granting urban development concessions and acting as the primary public authority client.
• Ville de Saint-NazairecoreStrategic or Co-development PartnerThe City of Saint-Nazaire works with Sonadev on multiple projects including public equipment construction, city center redynamization, and urban renewal, acting as contracting authority for various concessions.
• SilèneregularChannel Partner/ Reseller/ DistributorSilène is a social housing operator that partners with Sonadev on housing projects, providing rental housing units (social housing) as part of mixed developments like Les Clos Mignons and L'îlot Lebon.
• L'ÉpokregularImplementation/ SI/ Consulting PartnerL'Épok association supports Sonadev in animating and accompanying resident groups in participatory housing projects like Le Carrousel, helping future inhabitants develop their ideas and design their homes.

Scale indicators4 records

Recent moves9 records

Expansion highlights4 records

Broad incumbents

• Eiffage Immobilier: Major French property developer with residential, commercial, and urban project divisions. Comparable in mixed residential and commercial development scope, though operating as a private subsidiary of Eiffage group nationally.
• CDC Habitat: France's largest social housing operator, subsidiary of Caisse des Dépôts (CDC). Comparable public-affiliated housing entity with overlap in social rental and affordable homeownership programs; partner Banque des Territoires is part of the same CDC Group.
• Nexity: France's largest private real estate developer covering residential, commercial, and urban renewal. Comparable as a full-spectrum French developer, though operating nationally and as a private for-profit versus Sonadev's public SEM model.
• Altarea Cogedim: Diversified French real estate group covering residential (Cogedim), retail parks, and offices. Comparable as a full-spectrum French property developer with overlapping residential and commercial product lines.
• Bouygues Immobilier: Large French residential and commercial developer offering new housing, serviced plots, and business real estate. Comparable product portfolio (apartments, building plots, offices, commercial) though at national scale and private ownership.
• Kaufman & Broad: French homebuilder specializing in new housing for-sale, including apartments and serviced plots — directly comparable to Sonadev's Immobilier Particuliers line of business.

Direct peers

• Compagnie de Phalsbourg: French developer focused on large-scale mixed-use urban regeneration projects with public-private collaboration. Closely comparable to Sonadev's urban renewal work (Grenapin, Kerlédé, La Trébale) in combining residential, commercial, and public space delivery.
• Groupe Gambetta: French cooperative developer of affordable and social housing, including partnerships with local authorities. Comparable to Sonadev's PSLA/social housing mixed-development model with public-sector orientation.
• Réalités: French regional developer with focus on Grand Ouest territories, including residential, serviced plots, and business real estate. Comparable geography (Western France) and product mix to Sonadev's Saint-Nazaire agglomeration focus.

Others

• Action Logement: French housing finance organization supporting affordable housing programs including Action Coeur de Ville. Comparable as a public-policy-driven housing partner already engaged with Sonadev on Residence Mystik, illustrating the institutional ecosystem in which Sonadev operates.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks4 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/LaSonadev
• LinkedInlinkedin.com/company/sonadev

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 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 Sonadev