This single-family landmarked brownstone is undergoing an energy-efficiency retrofit that includes passive house strategies using high-performance windows and skylights and insulation of exterior walls. We explored ideas of new stair and 'light' void section through the home that would create an artwall zone and bring natural light through the reinterpreted stairwell zone. The third-floor artist studio would have a vantage point to look down on lower levels of the home. Our studies include 3d-modeling and physical model-making. Solar pv will be added at the roof. This project is in process.