You should not rely on a certificate as the sole indicator of how green your community is -- rely more on your "on-the-ground" analysis. Here are some things to look for.
So you're buying a new home, and you're committed to "buying green" -- a house with good indoor air quality, that doesn't cost a fortune to heat and cool and resides in an ecologically friendly neighborhood. How do you find out about all that?
While plug-in hybrid vehicles have about half the carbon emissions of typical autos, designing a city to be transit, bike, and pedestrian friendly from the start can't be beat.