Having been challenged to build a two-story timber greenhouse within the prescribed footprint, we focused on buildability and simple, rational gestures that respond to surrounding context. The diamond-shaped roof is tilted south in order to maximize the light absorbed by rooftop solar panels. A bridge between the upper floor and the upper terrace of the garden creates a dynamic and efficient circulation pattern. Although these design moves are specific to its unique location, the Solar Greenhouse’s formal and structural characteristics also are adaptable to a wide variety of both rural and urban sites. The design maximizes the ecological potential of its narrow footprint to grow plants on both floors, ideal for spatially limited urban rooftops or narrow lots. This prototype was designed to be disassembled and relocated to a different, potentially urban setting.