Abstract: The invention comprises a housing unit including at least a pair of elongated footing members spaced-apart and parallel, extending in one direction of the proposed building. A plurality of spaced-apart load supporting beam members are supported directly on said footings, the beam members extending parallel to each other and at right angles to the footings. The beam members extend in cantilever fashion beyond the edges of the footings and define the longitudinal edges of the housing unit to be supported. Longitudinal beams extend in cantilever fashion at right angles to the first beams to define lateral edges of the housing unit.