GLIDEHOUSE

Architectural Firm: Michelle Kaufmann Designs
Size: 1,344 square feet
Bedrooms: Two
Baths: One
Cost: $175 to $240 a square foot, including construction and finishes

This modular home can eliminate your utility bills with its optional solar panels, geothermal, wind power or hybrid power equipment. The home comes in several floor plans with different sizes, including a two-story option, but all of its floor plans maximize natural ventilation. The home is for sale in 13 states).