Made from tubular steel armature, the home is placed above ground on concrete piers or a wood deck and then sheathed in translucent polycarbonate plastic. Bellomo estimates that it could cost $100,000 for an 800 square foot prefab home. His design lends easily to additions and extensions of the home as needed. The Palo Alto Architect responsible for the modular prefab bike parking structure Bike Arc Joseph Bellomo has now applied the same construction techniques to create a similarly modular system for a prefab house that he calls the House Arc.