LEEDThe LEED (Leadership in Energy and Environmental Design) Green Building Rating System® is a voluntary, consensus-based national standard for developing high-performance, sustainable buildings. LEED standards are currently available or under development for: New commercial construction and major renovation projects (LEED-NC), Existing building operations (LEED-EB), Commercial interiors projects (LEED-CI), Core and shell projects (LEED-CS), Homes (LEED-H), and Neighborhood Development (LEED-ND).