Exterior, House Building Type, and Prefab Building Type This "local prefab" home on the Isle of Skye is made mostly from materials sourced in northern Scotland. The timber-framed model, meant to evoke the simple agrarian barns of the area, can be constructed on-site in as little as a day and is designed for affordability.  Photo 3 of 3 in Locally-Sourced Prefab Prototype in Scotland