Search the forums
Builder Christian Corson has built a net-zero, 1600 square foot two-bedroom home for $130 per sf. That figure includes sitework and septic, but not the land or the PV array. The home's heating demands are so low that it's heated with a mini-split heat pump. The vinyl R-9 triple glazed windows are made by lithuanian maker, Intus Windows.
You can check out the house here: