We were invited to design a Sukkah for the Jewish Community Center of San Francisco for their annual fall harvest Sukkot festival. This year, they partnered with the urban-planning think-tank SPUR to hold the festival in an alley downtown, turning the Sukkah into an urban happening and intervention. We designed and assisted in the building of the Sukkah. It is a series of wood slats fixed into a steel base, entirely demountable and flat-packed. Each assembly of the Sukkah can be customized by the team putting in together as an expression of community and adaptability. This is an open architecture.