/\ /\ . American Icon, Prefabbed: Even that dream of Americana — the log cabin — comes in prefab versions. Built in a factory setting, the prefab log home is then disassembled and shipped to the building site, where it’s put back together by builders familiar with log construction techniques. Prefab log homes are complete with factory installed systems for plumbing, wiring, insulation, and HVAC. A prefab log home maker can produce 15 homes per week.