Abstract: The present invention relates primarily to a foundation support for use with manufactured homes, such as mobile homes and trailers, as well as the more conventional prefabricated home. Using a tube-in-tube construction, where sleeves of rubber lay compressed, one adjacent the other, intermediate an inner and outer tube, provides an earthquake resistant support. The elastomeric portion of the foundation support provides isolation from vibrations produced from ground movement, wind forces or from traffic vibrations. A screw jack located centrally within the inner cylinder permits the ideal adjustment in providing and maintaining support for the manufactured building at a dead level. A ball swivel joint facilitates the installation and adjustment. As a protective safety device, to prevent the over extension of the screw jack, there is a stop at the distal end of the threaded jack rod to maintain sufficient thread engagement when the jack is fully extended.