The main living areas enjoy access to a front deck as well as a more private back patio shared with the master bedroom. Thanks to prefabricated exterior wall panels known as STEPS (Steel Thermally Efficient Panels), the house is well-insulated and resistant to fire, rot, mold, and termites.  Photo 4 of 8 in Offered at $674K, This Hybrid Prefab Is in Tune With the Californian Desert