Green Mount Corporate Center is a three-story, 52,000 square foot, Class A office building located in O’Fallon, Illinois directly at the I-64 and Green Mount Road Interchange. GMCC is the fust multi-tenant building to be developed with the Regency Park development, has excellent visibility to I-64, in an amenity rich area and is anchored by three hospital systems. Balke Brown Transwestern has professionally managed GMCC since 2008.