The concept “arises from the idea of creating an architectural object of sculptural character, defying gravity [and] suspended in the air”, explains a statement from the firm. The L-shaped floor plan includes three open-plan living spaces on the ground floor, that face out to a long pool and grassed lawn. The smaller, second floor juts out above the open car park, and is supported by two steel poles. This “block of exposed concrete [has] a surprising presence for the human eye”, states Gonzalez Arzac. The exterior of the second storey is made from board-marked concrete, offering a different texture to the rest of the house. ‘Casa Rex’ was designed with a neutral color palette and features stained wooden walls, sliding glass doors, and white and grey surfaces.