Green Home Rating Systems By Kate Galbraith A green home like this one on Long Island, which uses geothermal heating and solar collectors, is already expensive. Getting it certified as green is even more so. (Photo: Gordon M. Grant for The New York Times) Building a green home, with features like solar panels and top-of-the-line insulation, involves significant up-front costs. Added onto that is the cost of certifying your home — a stamp of approval that the home meets green standards.

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