The project takes place at the heart of the “Rive Gauche” ZAC with specific wishes in terms of sustainable development. Of simple and compact form, it is through the putting in the thickness of the facades that the materiality is offered to the constructed whole. Composed of three entities, a base, a body and an attic, each expresses a relation to its specific environment. The base, solid and protective, consists by houses with private exterior extensions. The body seeks to offer specified exterior dilatations through the treatment of the various terraces stretching like shooting lines towards the landscape. Vertically linked by twisted blades, they constitute an environmental skin combining the thermal qualities with the architectural qualities by a play of vibration of the light and of putting in thickness thanks to the constituted shadows. Finally, the Attic sequences the distant landscape by volumes. The unity is preserved by the establishment of a materiality and declinations of identical colors. The project answers the environmental commitments by rigorous construction, compactness required, but above all by the implementation of architectural features offering a quality of life thanks to a quality of space. It was designated a jury's favorite project during the signing ceremony Arcade.