The community of Serenbe, a multi-use development outside Atlanta in Chattahoochee Hills, Georgia, was founded with sustainability in mind. Seventy percent of its 1,000 acres is preserved natural space, and many of its buildings use geothermal heating and water-conserving appliances. But one of its greenest homes might be one that was built specifically as a model to showcase energy-efficient technologies. (See related post: “Energy Efficiency on the Farm and Beyond“)

The Bosch Net Zero home, which is designed to accommodate a family of four with zero annual energy costs, opened to the public last summer and went on the market in September. The details:

Another Net Zero home at Serenbe, which was meant to be the original model, was