Abstract: The invention is in the field of poured concrete precast panels particularly such panels when used for foundation structures for buildings. Precast, prefabricated panels include a brick ledge with the brick ledge being set at different elevations to accommodate foundations on sloping ground. L-shaped, concrete, precast, prefabricated panels are used as corner members for such foundations. Individual panels including side panels and corner panels are bolted together at the side edges of the panels to form a complete foundation. The invention also relates to molds for making such precast, prefabricated panels. The mold to cast L-shaped corner panels is hinged about a vertical axis. The molds for making the panels have a selection of forming pans to establish the location of the brick ledge.