BREATH OF FRESH AIR. The foyer's open spaces appeal to all the senses: Formaldehyde-free plywoods for subfloors and low-VOC paints improve the indoor air quality throughout the home. Flooring throughout is cork, bamboo, and salvaged hardwoods. The house design coupled with a whole-house attic fan keeps temperatures steady and all but eliminates air-conditioner energy. Photography by Stacy Zarin-Goldberg