ICEO, based in Nantes, France, operates as a developer and facilitator for participatory and affordable housing projects, especially in the western regions of France. The organization is closely involved in the creation and support of collective housing models that are designed in collaboration with future residents. These projects often emphasize a mix of private and shared spaces, with a strong focus on social connections and mutual support among residents.

One notable example is the “L’équipâge de l’île” development on the Île de Nantes. This project is shaped in partnership with prospective inhabitants, particularly seniors, who work with ICEO and Nantes Métropole Habitat to design individual units and common areas. The goal is to foster solidarity and allow a mix of tenants and owners from diverse backgrounds and ages, encouraging social and generational diversity. The project involves 21 retirees and aims for a move-in date in 2024.

Another current initiative is the "Fratera" program in the Nantes Nord area, set for completion in 2027. In collaboration with Nantes Métropole Habitat, ICEO is developing a 40-unit complex, with about 15 to 20 dwellings built on a participatory model. The design process involves both long-time and new residents, who help to shape shared facilities such as a cooperative kitchen, commercial areas, and services like a pharmacy.

ICEO’s projects extend beyond Nantes, with similar developments in Angers and Beaucouzé, focusing on eco-performance and affordability. The organization received recognition in 2024 with the Trophées des Possibles for ecological and affordable housing. ICEO’s portfolio demonstrates a commitment to collaboration and environmental standards, setting it apart in the local housing development landscape.