 Between July and October 1931, Le Corbusier and Jeanneret designed an eight-story building with fifteen apartments, with two or three units per level.The design applied four of Le Corbusier's five points of modern architecture – free floor plan, structure supported by columns rather than walls, free facade, and roof garden.Le Corbusier negotiated with the developers and acquired the right to occupy the top two floors, to be built at his own expense, for his own apartment.