Homes built to green standards will comprise 33 percent of the market by 2016, according to the Green Home Builders and Remodelers Study by McGraw-Hill Construction. Green homes made up 17 percent, or $17 billion, of the overall residential construction market in 2011.
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[1] http://www.jetsongreen.com/2012/02/green-home-build-remodel-market-forecast.html