The Home Builders Association of Northern California will cut energy use by 50 percent, compared with 1990 levels, and plans to reduce the carbon dioxide emissions associated with those homes by 30 percent by 2020.
green builders

San Francisco Home Builders Go Green
Business Pro Embraces Green Homebuilding - Without Greener Practices, Nothing Else Will Matter
Businessman Peter Lytle knows how to get things done in business: he pays attention to the numbers, and takes action. In his message to visitors to Live Green, Live Smart's website on sustainable homes, he looks at the numbers that should call the attention of everyone in business - everyone on the planet - to the problem and opportunities at hand.
http://livegreenlivesmart.org/founders_message.aspx
Wanted: 50,000 Green Homes
Minnesota's Live Green, Live Smart is remodeling a 1948 rambler into what they hope will be the first Platinum-certified LEED for Homes remodeled home in America. They invite others to join the green build movement by making modest to comprehensive choices about making their shelters greener.
http://livegreenlivesmart.org/shelter/50000_homes/default.aspx