The Green Building Certification Institute (GBCI) was established in January 2008 with the support of the U.S. Green Building Council (USGBC) to provide independent oversight of the Leadership in Energy and Environmental Design (LEED) project certification and professional credentialing processes.
The suite of LEED Professional credentials was designed to denote leadership in green building, with the LEED Accredited Professional (AP) with specialty credential distinguishing building professionals with the knowledge and skills to successfully steward the LEED certification process. Credentialing exams and designations administered by GBCI include the LEED Green Associate, LEED AP with specialty and LEED Fellow, as well as the LEED for Homes Green Rater and Green Classroom Professional certificates. The LEED Professional credential exams are ANSI 17024 accredited.
GBCI administers the LEED certification program, performing third-party technical reviews and verification of LEED-registered projects to determine if they have met the standards set forth by the LEED rating system. As of April 2013, the total footprint of LEED-certified projects is nearly 3 billion square feet, and nearly eight billion additional square feet are registered with GBCI for LEED certification.