New York City's built environment is undergoing a transformation as local regulations and laws aim to create a more sustainable and energy-efficient cityscape. One key piece of legislation driving this change is Local Law 87 (LL87), which requires owners of large buildings to conduct energy audits and retro-commissioning every 10 years. LL87 is part of the city's ambitious plan to reduce greenhouse gas emissions and improve the overall sustainability of its buildings. In this article, we will explore how Local Law 87 is energizing New York City's buildings and driving innovation in the built environment. We will delve into the requirements of LL87, its benefits, and its impact on the city's real estate industry. Let's dive in and explore how LL87 is transforming the landscape of New York City's built environment.