BNP Paribas Real Estate and Eiffage Immobilier acquire the D5 site in Boulogne-Billancourt to develop a mixed-use neighbourhood that will house the future headquarters of[...]

The historic site of the Renault factories, the Trapèze district is completing its transformation into an eco-neighbourhood combining respect for the environment and architectural ambition. It is now home to social housing and home ownership, offices, public facilities and shops, transforming it into a lively and attractive place.
On the last available land, BNP Paribas Real Estate and Eiffage Immobilier, winners of the competition launched by Renault Group in 2018, will develop a mixed-use and social project consisting of four buildings designed by four renowned architectural firms: Chartier-Dalix, BIG, AAVP and ECDM.
The 53,000 m² to be built is broken down as follows:

• Lot 1 (called New R): a 25,000 m² office building (Chartier-Dalix architecture firm)
• Lot 2 (called X work): a 15,000 m² office building (BIG architectural firm)
• Lot 3: a 6,500 m² building for residential and social housing (AAVP architecture firm)
• Lot 4: a 6,500 m² building of housing for first-time buyers (ECDM architecture firm)

These new buildings meet the major challenge of the Trapeze development, which is to offer the new residents a high quality of life in an exemplary district in terms of architecture, landscape and respect for the environment, a district marked by its belonging to the 21st century. They are in line with the principles of a "park city" that is both residential and tertiary, organised around a network of generous public spaces, including a seven-hectare park linking the city to the Seine.
"This emblematic project, located on the last plot of land in the Trapèze urban development zone in Boulogne-Billancourt, between the Seine and Billancourt Park, is a true demonstration of our know-how in building the city of tomorrow, integrating several architectural agencies and meeting high standards of environmental and energy performance," explains Olivier Bokobza, Chairman of BNP Paribas Real Estate's Development activities.
The architectural project for the property complex is based on simple principles designed to assert the landscape continuity of the Trapeze while offering the new buildings ideal conditions for views and openness:

• a common reference height for all the buildings,
• an intermediate layer with a lot of vegetation at about 35 metres from the ground,
• openings extending the principles of porosity and landscape continuity of the city park,
• east/west orientations offering optimal sunlight conditions and natural ventilation.

"Our challenge was to design a coherent whole, fitting into a neighbourhood with an already strong identity, while highlighting the know-how of the architects and landscape designers. Thanks to the involvement of everyone, common principles were quickly defined to imagine four buildings with a real singularity that fit harmoniously into the current environment. To complete this integration, the