Communal space is expressed which blur the distinction between the exterior and the interior materials. Private spaces retain accessibility while providing privacy through central courtyard area. The existing structure was stripped to studs with many interior walls removed to create spatial continuity both inside and out. The principle interior materials of walnut, terrazzo and silver travertine recall the character of the original residence. Photovoltaic panels, radiant floor heating, green living roofs and passive cooling systems including a water curtain at the edge of the reflecting pond in the entry courtyard integrate sustainable technologies and green strategies into the remodel and addition.