The house forms a parallelepiped composed of 2 volumes, an opaque heated volume and a transparent unheated volume. It thus has two faces, one light with polycarbonate cladding (garden side), the other raw and opaque with fiber cement cladding (street side). The street side facade is expressed according to the desires for light, transparency, privacy, protection or ventilation. The accordion shutters can close completely and form a shell or open completely over 6 meters wide, the facade lives at the rhythm of the users. The clients wanted a house with a large winter garden that brings them closer to nature. The greenhouse extends their living space to the champagne vines. This volume can also provide the home with a passive source of heat when it is cold. In the event of overheating in summer, large accordion shutters and retractable ventilation frames at the top open over 18 meters wide and ventilate by chimney effect.