The Jacobs House is recognized as the first of Wright’s Usonian houses. It incorporates the most basic forms and materials to create elegant but minimalist design for a family of ordinary means, a response to economic and social conditions during the Great Depression. Here Wright first used his “sandwich-wall” construction: interior and exterior layers of horizontal pine board with a vertical pine board core. A cantilevered carport, the first that Wright designed, projects from the 1,550-square-foot house. The walls are largely solid except for bands of clerestory windows. In the living room full-height glazed doors open onto a garden terrace to create a sense of flow between indoors and out. The house is privately owned and open selectively for public tours.