The United States Green Building Council (USGBC) has recently released its LEED for Existing Building (LEED-EB) Green Building Rating System. LEED-EB was designed to meet market demand for an existing building rating system following the success of LEED for New Construction (LEED-NC), the USGBC's current rating system for new construction.

LEED-EB makes LEED certification available to existing buildings and provides an opportunity for ongoing recertification for previously certified LEED buildings. LEED-EB helps building owners and managers bring the performance of their buildings up to a high level and maintain high performance over the long term. Benefits of LEED-EB include energy savings, water savings, and healthier indoor environments, according to the USGBC.