Building Green: A Complete How-To Guide to Alternative Building Methods Earth Plaster * Straw Bale * Cordwood * Cob * Living Roofs Lenders are the latest group to jump on the environmental-marketing bandwagon by pitching mortgage products that offer homebuyers bigger loans or discounts if they are making energy-efficient improvements — or if their new home meets certain efficiency standards. Last month, Citigroup Inc.’s mortgage division launched a program that offers $1,000 off closing costs with its energy-efficient mortgage through the end of the year. Also last month, Bank of America Corp. launched an Energy Credit mortgage, which offers a $1,000 credit toward closing fees for mortgages on new homes that meet efficiency requirements set by the government’s Energy Star program.

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