Inspired by the agrarian buildings of Sonoma County, Calif., Arkin Tilt Architects made this house narrow to permit maximum light penetration and sited it with a full southern exposure for passive solar gain. The simple structure is topped with an energy-efficient metal roof and features cellulose insulation, solar hot water, and Forest Stewardship Council–certified framing lumber. Salvaged flooring, in-floor radiant heat, and Energy Star appliances are among its other earth-friendly items.

CATEGORY: Green/Sustainable project 
ENTRANT/ARCHITECT: Arkin Tilt Architects, Berkeley, Calif. 
BUILDER: Hammond & Co./Hammond Fine Homes, Cotati, Calif. 
DEVELOPER: Chris Gaut and Tiff any Camarillo, Santa Rosa, Calif. 
LANDSCAPE ARCHITECT: Earth Design Group, Sebastopol, Calif.

Learn more about markets featured in this article: Santa Rosa, CA.