Abstract: A method of marketing an elevated prefabricated building includes the steps of: 1) offering to a customer for a quoted price, a building that has a precast concrete chain wall foundation and a prefabricated building that is to be supported by the precast concrete chain wall foundation; 2) the offer in step “a” including an offer to install the building at the site within a span of construction time on site of a week or less; 3) the precast concrete chain wall foundation offered for shipment to a selected site after it has been cast; and 4) the precast concrete chain wall foundation and prefabricated building being offered to be installed at the selected site with a lifting device that lifts each from the transport vehicle to the site.

Abstract: A method of constructing a building in a typically flood prone area employs a pre-cast concrete chain wall that can be set on an optional foundation or footing.

Abstract: A prefabricated building includes a pre-cast concrete chain wall foundation having upper and lower walls with a height and a thickness, the ratio of wall height to wall thickness being equal to or greater than 3 to 1 and the wall height is at least three (3) feet; and a prefabricated building positioned upon the precast concrete chain wall foundation, wherein the prefabricated building has walls that rest upon the upper surface of the pre-cast concrete chain wall foundation.