These four courtyard houses have a modular design that is reflected in the shared center space, and each reacts individually to the topographical conditions. The façades and clearly structured roof landscape are defined by the stringent floorplan. Each main room contains a trapezoidal roof with a skylight at the highest point. The roofs respond in their height to the size and significance of the rooms below and help to zone the generous spatial structure. The gray cement concrete with broken alpine lime has a distinctive finish and is divided into light and dark areas.