It's not very noticeable, but the first floor bumps out slightly from the basement level. That's because the house has a three-inch layer of foam insulation board on the exterior. That superinsulation and an air-tight envelope greatly reduce the heating and cooling needs for the house.
The house has a flourishing garden and reuses rain water extensively. Water is collected, filtered with sand, and pumped into the garden. That cleaned rain water is also used to flush the toilets, cutting down on the water bill.
October 9, 2011 7:27 AM PDT
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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