Concurrent with sustainable thought, the d3 Housing Tomorrow competition assumes that architecture does not simply form, but rather perform various functions beyond those conventionally associated with residential buildings. Accordingly, design submissions must be environmentally responsible while fostering inventive conceptual living solutions for today and tomorrow. Although proposals should be technologically feasible, they may suggest fantastical architectural visions of a sustainable residential future. The d3 Housing Tomorrow competition allows designers freedom to approach their creative process in a scale-appropriate manner, from large-scale master planning endeavors, to individual building concepts, to notions of the interior realm. Although there are no restrictions on site, scale, program, or residential building typology, proposals should carefully address their selected context.