Fronting the open greenspace of the Presidio with a “flag lot” configuration, approach from Spruce Street, and a reverse floor plan, the existing physical and conceptual structure of this home was maintained. The project consisted of expanding and excavating the lower level, re-organizing the layout and circulation on all floors, and creating a gracious stair and glass floor which resulted in a re-imagined aesthetic for this 5,500-square foot home. Grounded in mid-century modern principals, the home also fulfills the functions of current daily life.