prefab 20*20 was an international open ideas competition challenging architects and designers to propose a free-standing, prefab dwelling with a footprint of no more than 400 square feet(37.5 square metres) to be situated in an urban setting anywhere in the world. the criteria was that it should accommodate two adults and include quarters for bathing, cooking, living sleeping,working / studying and storage areas.

the competition was organized by architecture for humanity vancouver, the architectural institute of british columbia, interior design show west 2009 and sponsored by azure magazine.

here is a look at the winner and some of the honorable mentions:

ecomobi scenario – situated on top of residential buildings

prefab 2020: visions for 400 square foot homes interior rendering of ecomobi in full use

prefab 2020: visions for 400 square foot homes closed-up

winner ecomobi: modular housing system mobius architects (przemek olczyk, wojtek gawinowski, wojtek sumlet) krakow, poland

prefab 2020: visions for 400 square foot homes thick-skinned regionalism situated over water runner-up thick-skinned regionalism daniel preusse, bo yoon, matthew fajkus london, UK

prefab 2020: visions for 400 square foot homes self-sufficient pre-fab house

prefab 2020: visions for 400 square foot homes rendering of a complex of self-sufficient prefab houses

honorable mention self-sufficient prefab house system design studio (helbert suarez ferreira, remi melander) barcelona, spain

prefab 2020: visions for 400 square foot homes the spontaneous house stacked honorable mention the spontaneous house cobogó team (cláudia bastos coelho, mariana matayoshi) diadema, brazil

prefab 2020: visions for 400 square foot homes the cantilevered urban (tree) houseextending out over the street

honorable mention urban (tree) house jason david designs (jason labutka) new york, USA

prefab 2020: visions for 400 square foot homes the form of this shelter is taken from the iconic shape of a house that has been flipped onto its roofside

honorable mention turned icon house dipsource (daria barnas, ivo gigante tiago, paula cicuto) porto, portugal

prefab 2020: visions for 400 square foot homes the futuristic looking mod radiant housing honorable mention mod radiant sprawlers (ryan lohbauer0 philadelphia, usa