An examination of the LEED green building certification system in terms of construction costs

This study was conducted to assess cost-benefit analysis and payback period of two green buildings located in Turkey. In this context, two buildings in gold and platinum categories according to the LEED certification system were studied to present the actual expenses caused by greening. For gold and platinum certified building respectively; the additional construction cost was found to be 7.43% and 9.43%, the share of soft cost in total construction cost was stated to be 0.84% and 1.31%, reduction in annual energy consumption cost was determined as 31% and 40%, also additional construction cost's payback period was calculated to be 0.41 and 2.56.