From the AIA:
This house was custom designed for a family of four. The idea for this house was not to blur the distinction from indoor to outdoor with big walls of glass, but to intensify the quality of each. Sustainable choices facilitate the client’s interest in indoor outdoor living. Green roofs insulate the lower roofs while they strengthen the articulation between activity spaces and service spaces. Exposed materials with a high thermal mass and polished concrete floors take advantage of the significant daily temperature swing in this coastal climate. A cool white roof, easily accessed for cleaning minimizes solar gain, critical in this sunny climate.