TBo's Monroe Street House in Brooklyn connects a Federal-style brick building to a new rear extension without erasing the distance between them. The original home keeps its historic proportions and room arrangements toward the street; the back opens into a sequence of more communal, light-filled spaces. A brick arcade from the original structure marks the threshold between old and new, allowing both to read clearly without apology.

The site is narrow and hemmed in by deep adjacent buildings on either side, which made natural light the central design problem. The rear extension resolves this through a poured-in-place concrete frame set within a restrained 200-square-foot footprint. Rather than expanding the building outward, TBo pushed the ground-level studio downward, lowering the floor to increase ceiling height and pull the space into closer relationship with the garden. The textured concrete floor inside continues the gravel texture of the patio outside, dissolving the boundary between the 2 surfaces.

The program distributes across 3 floors by household and use. The ground floor belongs to a painting studio for the grandparents, designed to serve equally as an art space and a play area for grandchildren, with direct access to the sunken garden. The parlor level holds a kitchen bay and an outdoor dining deck. The top floor contains an L-shaped primary bedroom with a separate area for music, framed by views of treetops rather than street.

Material choices throughout are minimal and unglamorous in the best sense. Untreated concrete and lime-plastered walls age in the open rather than resisting change. Doug fir ceiling beams in the dining area pick up the structural language of the concrete frame without mimicking it. The palette is designed to look better with time, not worse.