Building technology is improving every day, but if it's a super energy-efficient dwelling you're after, the tools are already well at hand.
Once a year, the Northeast Sustainable Energy Association organizes a green buildings open house where energy nerds like myself can see the latest in home efficiency.
The homes, which are both new construction and renovations, show that builders, architects, and homeowners have unlocked the code for making buildings dramatically more energy efficient than your typical construction. The question now is whether green building techniques and products will remain on the fringe or become more mainstream.
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