Boulogne B4C – Collective housing in Boulogne Billancourt
Sergio Grazia

Boulogne B4C – Collective housing in Boulogne Billancourt

Brenac & Gonzalez & Associés BGA as Architects

Located behind the pastoral Catholic complex, the B4C enjoys uninterrupted views of Meudon’s hills on the other side of the Seine river. Its volumes are composed of two façades that are very different due to their exposure. The smooth north-facing façade overlooking rue Marcel Bontemps offers a pattern of aluminum sheets incorporating sliding shutters for the bedrooms in an abstract motif of juxtaposed frames. The southern face folds like a subtle origami and offers alternating balconies and winter gardens. These exterior spaces bind all the building’s living spaces. Their diamond shape stretches the perceived surface beyond reality and contributes to a feeling of opening up to the landscape. The volumes thus emerge by passing from this smooth façade to the crystalline one like two facets of a precious jewel.


Use The 46 apartments are served by two vertical openings. A broad lobby fully opened to the street provides passers-by with a view that contributes to enhancing the rapport of the building to the city. The ground-floor apartments are raised more than 1.5 meters above the sidewalk, ensuring full privacy for their occupants. The space between the church complex and the building is occupied by private gardens for the personal use of the ground-floor apartments. The upper floors enjoy wide balconies or winter gardens looking out at the best views. The winter gardens come with sliding glass walls that protect them from the wind and provide extended exposure to the outside spaces.


Sustainabledevelopment A certified low-energy building, B4C benefits from the winter gardens that act as thermal buffers. It’s 3D relief facing the prevailing winds limits whirlwinds and protects the outside spaces. All apartments are walk-through, thus maximizing natural ventilation. The bio-climatic principles on which its design is based are enabled due to good insulation and wide, southern-facing picture windows.

Products Behind Projects
Product Spotlight
News
ATP architects engineers completes office building in line with “New Work” principles and sustainability goals
2 May 2024 News
ATP architects engineers completes office building in line with “New Work” principles and sustainability goals

ATP architects engineers has completed a sustainable operational and office building for Austrian ma... More

SOM completes “terminal in a garden” at Bengaluru’s Kempegowda International Airport
1 May 2024 News
SOM completes “terminal in a garden” at Bengaluru’s Kempegowda International Airport

International and interdisciplinary architecture, design, and engineering firm Skidmore, Owings &... More

Archello houses of the month - April 2024
30 Apr 2024 News
Archello houses of the month - April 2024

Archello has selected its houses of the month for April 2024. This list showcases 20 of the mos... More

Zaha Hadid Architects’ Zhuhai Jinwan Civic Art Centre echoes chevron patterns of migratory birds
29 Apr 2024 News
Zaha Hadid Architects’ Zhuhai Jinwan Civic Art Centre echoes chevron patterns of migratory birds

Designed by Zaha Hadid Architects, the Zhuhai Jinwan Civic Art Centre is defined by the acclaimed ar... More

25 best metal cladding manufacturers
29 Apr 2024 Specification
25 best metal cladding manufacturers

Metal cladding can combine functionality with aesthetics while meeting high sustainability targets,... More

Nieto Sobejano Arquitectos’ restoration of Munich museum finds freedom within limitations
29 Apr 2024 News
Nieto Sobejano Arquitectos’ restoration of Munich museum finds freedom within limitations

Nieto Sobejano Arquitectos has completed the restoration and expansion of the Archaeologische Staats... More

Introducing Partner Lemi Group
29 Apr 2024 Partner News
Introducing Partner Lemi Group

Lemi Group is an international leader in the design and manufacture of treatment tables, chairs, and... More

Archello Awards 2024 – Early Bird submissions ending April 30th
26 Apr 2024 News
Archello Awards 2024 – Early Bird submissions ending April 30th

The Archello Awards is an exhilarating and affordable global awards program celebrating the best arc... More