This ongoing study of spatial prototypes seeks to create a vocabulary of live and work volumes and strategies for their arrangement in a variety of sites. They are sized for specific live and work activities and are tuned to maximize natural daylight exposure (southern for living spaces, northern for working) and exterior connection. The units are comprised of economical prefab components, and arranged to create natural outdoor terraces and efficient circulation and service systems. This investigation led to the development of a set of rules, akin to the game Rumis, for unit shape, adjacencies, and orientations.