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What is GBCI?

by A. Togay Koralturk May 14, 2026 1 min read

Green Business Certification Inc. (GBCI), formerly known as Green Building Certification Institute (GBCI), changed its name on April 16, 2015; is the sister organization of USGBC that administers LEED building certifications and LEED professional accreditations.

When a project submits all the necessary documents for a LEED application, GBCI is the organization that will review the application and determine if all the requirements set forth in a LEED rating system are fully met or not. And if the requirements are fulfilled, GBCI will grant the LEED certificate.

LEED professional exams are also administered by GBCI, and LEED professional credentials are awarded according to the exam results.

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About the Author

A. Togay Koralturk

A. Togay Koralturk is a globally recognized pioneer and educator in sustainable design and construction, as well as an international best-selling author of LEED study guides. His LEED publications have reached tens of thousands of professionals worldwide and have been widely adopted as primary course materials at leading universities across the United States. Holding a bachelor’s degree in civil engineering and a master’s degree in construction management from the University of Southern California, he began his career in Los Angeles, CA, earning his LEED AP® credential along the way in 2008. He has helped numerous projects pursue LEED certification worldwide and has educated thousands of professionals.