Abstract: A support system for structures such as mobile homes, trailors and the like comprising two main support members, each having two legs supported by a base and with a clamping means at the top thereof. The height of the legs is adjustable by means of bolts which extend upwardly from the base, there being nuts on the bolts which support the two legs. There are also provided two cross-braces which interconnect and further support the two main support members as well as a stabilizer for providing support in the plane perpendicular to the plane of the cross-braces.