How many certification levels does Leadership in Energy and Environmental Design (LEED) have?

The Leadership in Energy and Environmental Design (LEED) certification system has a total of four levels: Certified, Silver, Gold, and Platinum. These levels represent different degrees of sustainability and energy efficiency achieved by a building project. Each level signifies a certain number of points earned based on various environmental criteria such as energy efficiency, water conservation, CO2 emissions reduction, and indoor environmental quality. Therefore, understanding the structure of LEED's certification levels is crucial for anyone involved in sustainable building practices or looking to achieve certification for their projects.