Project Type Program Milieu Location Client Year
La collectionneuse Restauration Apartment 20th C Heritage Paris 16e Privé 2016
Croisée Renovation Apartment 20th C Heritage Paris 16e Privé 2016
Banc public Installation Retail & hospitality Department stores Paris 3e Tom Greyhound 2016
Trois objets Installation Retail & hospitality Department stores Paris 9e System 2017
Audi de mixage I Renovation Auditorium, Post-production studio Cinema, Acoustic Paris 10e Third 2017
Audi de mixage III Renovation Auditorium, Post-production studio Cinema, Acoustic Paris 3e Saya 2019
Audi de mixage II Renovation Auditorium, Post-production studio Cinema, Acoustic Geneva Masé 2018
Hortus Teaching - Academic Architecture school of Versailles - 2017
Les cours urbaines Teaching - Academic Architecture school of Paris-Belleville - 2014
Maison Bernard Restoration House 20th C Heritage Maisons-Laffitte (78) Privé 2022
Villa Riberolle Rehabilitation Auditorium, Post-production studios, Offices 19th C industrial Heritage, Cinema and Sound Paris 20e PolySon Post Production 2024
Studiolo Renovation Apartment Urban Paris 9e Le Crime 2021
Maison sur jardin Renovation, Extension House Peri-urban Cachan (94) Privé 2021
Ferme franc-comtoise Rehabilitation House Agricultural Heritage Mesnois (39) Privé 2021
Longère Rehabilitation Collective housing Agricultural Heritage Grand-Auverné (44) Une Famille Un Toit 44 2023
Grange Rehabilitation House Agricultural Heritage Belforêt-en-Perche (61) Privé 2023
Micro/Macro Teaching Workshop Academic Architecture school La Cambre-Horta, Brussels - 2022
Château de Bussy-Rabutin Restoration, Heritage assessment Cultural, Museum, Visitor center 17th C Heritage Bussy-le-Grand (21) Centre des Monuments Nationaux 2021
Ecole Paul Bert Heritage led rehabilitation and energy upgrade School complex 20th C Heritage, UNESCO World Heritage Site Le Havre Le Havre (76) Ville du Havre 2024
Appartement 24 N.C. Renovation Apartment 20th C Heritage, Façades and Common areas listed as a Historic Monument (MH) Paris 16e Privé 2024
Objets Trouvés Exhibition - Museum Cité de l'Architecture et du Patrimoine, Paris
- 2023
Centre de tri Rodier Reconversion Collective housing, Coworking, Public building,Post office, Urban logistics 20th C Heritage Paris 9e Poste Immo 2025
Ancien hôpital La Rochefoucauld Rehabilitation, New build Collective housing, Artists’ studios, Workshops of the École Spéciale d’Architecture, Art gallery, University hospital group (GHU), Café, Coworking space 18th C Heritage, Listed as a Historic Monument (MH) in 1928 Paris XIV, France AP-HP 2025
Monge Rehabilitation Collective housing Haussmannian Heritage, Social housing Paris 5e Paris Habitat 2025
Ancienne poste Reconversion Collective housing Rural Heritage, Former post office Treffieux (44) Une Famille Un Toit 44 2024
Philolaos Restoration, Feasibility assessment Cultural, Atelier, Artist residency, House 20th C Heritage Saint-Rémy-lès-Chevreuse (78) Privé 2023
Ecole La Rose Rehabilitation, Extension School complex 20th C Heritage, School heritage Marseille (13) SPLA-IN des Ecoles de Marseille 2025
Georges Perec, Human Algorithm Teaching Workshop Academic Paris-Est School of Architecture (ENSAVT) - 2024
Marbeau Restoration Apartment 20th C Heritage, Art déco Paris 16e Private 2025
Villa Arpin Heritage assessment House 20th C Heritage, Coastal urban context Palavas-les-Flots (34) Privé 2023
Appartement 24 N.C. II Renovation Apartment 20th C Heritage, Façades and common areas listed as a Historic Monument (MH) Paris 16e Privé 2025
Ecole de la Marine Reconversion Multi-family housing, Student housing, Offices, Workspaces 20th C Heritage, School heritage Nantes (44) Loire Océan Métropole Aménagement, Nantes Métropole 2025
Maison Le Manchec Restoration, Feasibility assessment House 20th C Heritage Chennevières-sur-Marne (94) Architecture de Collection 2026
Jussieu Research thesis - Academic Paris ENSA Paris-La Villette / HESAM Université 2022
Audi de mixage V Renovation Auditorium, Post-production studio Cinema, Acoustic Paris 15e Private 2022
Audi de mixage IV Renovation Auditorium, Post-production studio Cinema, Sound Geneva Masé 2023
Hôtel Renovation, Construction Luxury hotel, Spa & wellness Site classified as a Historic Monument (MH) Loir-et-Cher (41) Privé 2023
Appartement de faubourg Renovation Apartment Inner suburb Paris 11e Private 2018
Paulin Restoration, Feasibility assessment Cultural, Archives, Exhibition space, House 20th C Heritage Saint-Roman-de-Codières (30) Private 2023
Porte voix Renovation Amphitheatre Cultural, Sound Versailles, (78) ENSA Versailles 2025
Une maison en forêt Restoration, Extension House 19th C Heritage Rueil-Malmaison, (92) Private 2021
Vue sur mer New build House Coastal urban context Saint-Cast Le Guildo, (22) Privé 2023
Ancienne poste
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RREEL - Ancienne poste
RREEL - Ancienne poste
Type
Reconversion
Program
Collective housing
Milieu
Rural Heritage, Former post office
Location
Treffieux (44)
Status
Winner of the “Premier Réinventer Rural” competition (2022). Ongoing
Client
Une Famille Un Toit 44
Year
2024
Team
RREEL, Bertrand Robert
Area
720 m²
Budget
1,3 M €HT
Description

Une Famille Un Toit 44 has been delivering affordable housing for households facing exclusion for nearly twenty years. The association contributes to the revitalisation of town and village centres—particularly in rural areas—by rehabilitating vacant buildings to meet local needs. It also experiments with new housing models for vulnerable groups (people living alone, older residents, Travellers, migrants, etc.), while actively taking on the preservation of neglected rural heritage.
The former post office in Treffieux is emblematic of the abandonment of the village centre and its traditional housing stock. In 2019, the site was the subject of a call for proposals, which our team won. Located at the heart of the village, it offers a prime opportunity to restore social and functional mix. The neighbouring plot is occupied by a former farm, also derelict, which we propose to incorporate into the project. Combined, the two sites can become a large garden open to the public, extending a pedestrian link that runs through the village centre.
In this restoration project, our approach is to intervene as lightly as possible in the existing buildings. The interiors are arranged in continuity with the existing structure and layouts, giving the new dwellings distinctive qualities that depart from today’s standardised collective housing. Bio-based materials and traditional techniques (lime–hemp insulation, lime plasters) are implemented to achieve strong energy performance. Materials and construction processes remain simple—sometimes deliberately rustic—in order to reduce operating costs for the housing provider.

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