Interior

Habitats are small, only 330 sq ft interior per floor.  (18 ft across).  This allows for the high density and reduced transport component. Round in the interior, giving an aesthetic and creative atmosphere

Yet these habitats are surprising roomy, primarily because of the efficient use of space. Stairs-put on outside so as to not take up room, more useful

Utilizes: under floor storage, stair storage, dual use.