OFSML — Organisme de Foncier Solidaire de la Métropole Lilloise — is a French association that acquires land to enable long-term affordable homeownership through the Bail Réel Solidaire (BRS) mechanism, preventing speculation by retaining land ownership while selling buildings to eligible households.158
Founded on 28 February 2017 at the initiative of the City of Lille, European Metropolis of Lille, Lille Foundation, and the Federation of Real Estate Developers of Hauts-de-France, it received prefectural approval on 20 July 2017 and launched France's first operational project with 15 BRS housing units sold in 2018.14 The organization purchases land indefinitely, partners with social or private developers to build housing, and sells units under BRS to moderate-income buyers, ensuring affordability persists through resale restrictions.189 Stanislas Dendiével serves as Secretary, and on 27 January 2025, the association renewed its board with eight administrators.2
OFSML's mission centers on sustainable, non-speculative property access, aligning with affordable and sustainable housing by decoupling land costs from home prices and maintaining housing for future moderate-income owners.15 Its activities include program development, buyer eligibility checks, and sales, with a focus on the Lille metropolis.9
Geographically, it operates locally in the Lille area but engages nationally as a founding member of Foncier Solidaire France (established 15 February 2021) and participates in the European SHICC project on sustainable housing, alongside partnerships like Housing Europe.23610