As of November 15, 2019, building owners in New York City are required to install “sustainable roofing zones” on all newly constructed buildings, expansions of existing roofs and roof replacements. The new laws were passed by the New York City Council on April 18, 2019, and became law on May 20, 2019. These new ordinances, known as Local Laws 92 and 94 of 2019, passed as part of a broad package of laws known as the New York City Climate Mobilization Act, whose goal is reduction of building carbon emissions. Because the sustainable roof requirements are effective now, plans submitted to the Department of Buildings for approval must include plans for sustainable roofs.