I posted an update of the design for A House for Khayelitsha on Tiny House Design. It measures 16′ by 16′ (5 meters by 5 meters), has a sleeping loft, and simple passive solar design. The structure is made up of simple 2×4 and plywood panels.
I’m working to finish the plans quickly so that the house could be built, assuming it meets all their requirements. I’ll also publish the plans online in case anyone else wants to build this simple prefab solar house.