The design for this west Austin residence involved a respectful remodel to an existing Fred Day-designed treetop home and a contrasting new addition. The existing structure was modified to create a gourmet kitchen, an enlarged master closet, a laundry room, powder room, and a bridge to the addition. Other updates to the original house included an upgraded geothermal air-conditioning system, updates to make the envelope more energy efficient and expanding the front deck to accommodate dining. The addition, an elegant 'shotgun' style form, contains bedrooms, an exercise room, family room, garage and an herb garden. Using materials of glass, metal and concrete, the addition was placed at the back of the sloping lot so that it would not impede upon the unobstructed views to downtown and hill country beyond.