The challenge is to propose a free-standing, prefab dwelling unit for a footprint no more than 400sf (37.5sm) in an urban setting anywhere in the world. Fit for two adults, its basic program shall include sleeping, bathing, cooking, living, working/studying, and storage areas. Entrants are free to deviate from the basic program but justification must be included.

http://www.idswest.com/prefab.php