Exterior, House Building Type, Wood Siding Material, and Cabin Building Type First, a concrete slat was poured into the ground with strategically placed dwarf walls built on top. Working as an adjustable “raft,” a floating structural frame was placed on top of the walls allowing for potential movement. If that happens, there are mechanical jacks placed underneath the frame in case the house needs to be leveled again.  Photo 2 of 19 in A Modern Holiday Home on a Cliff on the South Coast