New York City stands at the forefront of urban environmental reform with the implementation of Local Law 97, a cornerstone of the Climate Mobilization Act passed in 2019. This legislation represents one of the city’s most aggressive steps towards reducing its environmental footprint, particularly focusing on its buildings, which are the largest contributors to its greenhouse gas emissions. Understanding and complying with this law is not merely a legal obligation for large building owners but a necessary step towards a sustainable urban future. This blog post serves as a comprehensive guide, detailing what Local Law 97 entails, why it’s crucial, and how building owners can ensure compliance.