New York City Local Law 86.

Passed in October 2005, New York City Local Law 86 became effective on January 1, 2007. It requires all new construction using $2 million or more of city funds to meet sustainability standards that are at least as strict as LEED silver. An unhappy consequence is that it just got even more expensive for affordable housing developers. (Though some are finding ways of greening without going LEED.)