California is a hotbed of sustainable construction, as mandated by state legislation, and all of these houses employ active and passive strategies to reduce their carbon footprint. There's a strong emphasis on natural light and ventilation, thermal insulation, and solar panels. Rainwater is harvested for irrigation. These are homes constructed to conserve energy, withstand earthquakes and, often, to resist wildfires, but without losing their aesthetic appeal.
The selection ranges from a landscaped concrete dome to an inflatable shelter that can be assembled and relocated as easily as a tent. An expansive ocean-front retreat contrasts with a bungalow that has been transformed on a shoestring budget and a weekend cabin in a desert wilderness. One house cascades down a wooded hillside, another spans a creek, and several more are tucked into confined city lots.