Situated on an underutilized, inner-city infill site, the design for 1210 orchestrates the challenging mix of vehicular and pedestrian circulation through the narrow lot with a series of strategically located volumes arranged in a Tetris-like manner. The resulting interplay of solid and void affords the residence multiple layered outdoor spaces while opening up natural lighting opportunities with fragmented city views. The interlocking forms and materials on the exterior are reflected in the dynamic spatial configuration and finishes on the interior. CMU block fire walls are left exposed in main public rooms and custom millwork snakes along circulation routes to infuse functionality into these areas. A sophisticated system of masonry and steel structural elements augment wood framing to achieve the extreme double cantilevers which characterize the stacked block look of the house.