Usonian Houses

Concurrent with the development of Broadacre City, also referred to as Usonia, Wright conceived a new type of dwelling that came to be known as the Usonian House. An early version of the form can be seen in the Malcolm Willey House (1934) in Minneapolis; but the Usonian ideal emerged most completely in the Herbert and Katherine Jacobs First House (1937) in Madison, Wisconsin. Designed on a gridded concrete slab that integrated the house's radiant heating system, the house featured new approaches to construction, including sandwich walls that consisted of layers of wood siding, plywood cores and building paper, a significant change from typically framed walls. Usonian houses most commonly featured flat roofs and were mostly constructed without basements, completing the excision of attics and basements from houses, a feat Wright had been attempting since the early 20th century. The Jacobses also commissioned the "Solar Hemicycle" by Wright in 1944, a seminal project in the solar house movement.
Intended to be highly practical houses for middle-class clients, and designed to be run without servants, Usonian houses often featured small kitchens — called "workspaces" by Wright — that adjoined the dining spaces. These spaces in turn flowed into the main living areas, which also were characteristically outfitted with built-in seating and tables. As in the Prairie Houses, Usonian living areas focused on the fireplace. Bedrooms were typically isolated and relatively small, encouraging the family to gather in the main living areas. The conception of spaces instead of rooms was a development of the Prairie ideal; as the built-in furnishings related to the Arts and Crafts principles from which Wright's early works grew. Spatially and in terms of their construction, the Usonian houses represented a new model for independent living, and allowed dozens of clients to live in a Wright-designed house at relatively low cost. The diversity of the Usonian ideal can be seen in houses such as the Gregor S. and Elizabeth B. Affleck House (1941) in Bloomfield Hills, Michigan, which projects over a ravine; and the Hanna-Honeycomb House (1937) in Palo Alto, California, which features a honeycomb planning grid. Gordon House, completed in 1963, was Wright's last Usonian design. Fewer than 60 of Wright's Usonian houses were built.