Exterior, Wood Siding Material, Prefab Building Type, and Flat RoofLine “One of the goals of Zenkaya was to create employment in a country crippled by [an unemployment rate of over 25 percent],” explains the architect, who likes to call himself a social entrepreneur.  Photo 11 of 14 in 14 Totally Off-the-Grid Cabins from A Prefab Housing Concept in South Africa