Exterior, House Building Type, Prefab Building Type, Metal Siding Material, and Glass Siding Material Manufactured with up to 70 percent recycled steel, the hybrid prefab home limits construction waste to the factory, where it's recycled. The efficiency and lightness of the resulting build is another environmental advantage.  Photo 8 of 8 in Offered at $674K, This Hybrid Prefab Is in Tune With the Californian Desert