This 3,000-square-foot home by One Sky Homes is the first U.S. DOE Zero Energy Ready Home certified in the state of California.

The traditional three-coat stucco hides the home's continuous thermal blanket construction with advanced framed wall technology. The wall construction includes 2-by-6, 24-inch on-center wall framing dense packed with R-23 of cellulose insulation plus a 1-inch thick continuous thermal blanket of rigid foam over the plywood sheathing.

Redwood awnings are more than an architectural feature; this solar window shading helps keep interiors comfortably cool in the summer.

A greywater system captures drainage from showers, vanity sinks, and the clothes washer to provide 80% of the landscape irrigation for the water-saving landscaping.

Lighting energy use is reduced with a combination of high-efficiency CFLs and ultra-efficient solid-state LED lighting technologies, together with motion sensors, timers, and photocells.

The home's ultra-efficient comfort system uses an air-source heat pump with a cooling efficiency of SEER 21 and a heating efficiency HSPF of 10 (far higher than the federal minimum standard of SEER 13 and HSPF 7.7). The energy-saving comfort delivery system features heating and cooling ducts located within the conditioned space instead of an unconditioned attic common in minimum-code homes.

All paint, varnishes, wood board products, and carpet are certified low-/no-VOC as part of a healthful indoor environment that meets the EPA's Indoor airPLUS program specifications.

The professionally installed balanced fresh air system brings outdoor air to every room via a heat recovery ventilator that employs high-capture filtration technology. The home is also equipped with advanced fresh air cooling technology that circulates and filters naturally cool nighttime air throughout the home to help cool down the house without high air conditioning bills.