San Francisco has become yet another major U.S. city to impose strict new green building requirements for new commercial and residential construction as well as for renovations of existing buildings.
The ordinance requires new commercial buildings of more than 5,000 sq. ft., residential buildings over 75 feet in height and renovations on buildings of more than 25,000 sq ft to be subject to, "an unprecedented level of LEED and green building certifications, which makes San Francisco the city with the most stringent green building requirements in the nation," according to a press release from the office of Mayor Gavin Newsom.
The effects of the legislation are expected to make a significant contribution to the city's 2004 Climate Action Plan, which calls for the reduction of green house gases to 20% below 1990 levels by 2012. The cumulative impact of the ordinance is expected to include reducing CO2 emissions by 60,000 tons, saving 222,000 megawatt hours of power, saving 100 million gallons of drinking water and reducing construction/demolition waste by 700 million pounds.