This accessory to a craftsman house in a historic Austin neighborhood adds an indoor/outdoor component that complements the existing structure. Built of steel, glass and board-formed concrete, the room opens up entirely, with landscape providing screening and a green backdrop to the ample windows and retractable glass walls. The simple design, with emphasis on the natural and durable materials is a unified, coherent presence that showcases the handmade craft details, including a custom built pulley that raises the fireplace screen.