This prefab house is built around a system of 4' by 4' concrete modules and a reusable formwork to save on costs and materials.
Shelter No. 2, Broisson Architects, 2008
This prefab made mostly of recycled materials is modest, but not too modest for a spiral staircase. Three levels culminate in a large skylight, which filters natural light all the way down to the ground floor's hydroponic garden.
GRID, Carter Williamson Architects, 2012
Envisioned as emergency housing for after tsunamis, this steel prefab from Australia arrives flat-packed and can be assembled in four hours. With solar panels and rainwater tanks, it's possible for it to house up to 10 people in a pinch.
Inflatable Space, Penttinen Schöne, 2010
Commissioned as an interactive arts project in Essex, England, this swollen, whimsical structure is now used as a kid-friendly pavilion for a housing estate.