A well-tuned guitar performs as you expect it would, so does a well-tuned building


Commercial buildings account for almost half of the total energy use and consume 1 billion gallons of fresh water a day in the United States.  This is because buildings are living and breathing, with thousands of ever moving parts to keep occupants and equipment operating, satisfied and safe.  Over time, even well commissioned buildings lose their efficiency.  Retro-commissioning, ongoing commissioning and continuous commissioning  are a crucial step in maintaining and reducing the energy consumption of the building.   This operational expense and potential energy waste can be reduced through existing building commissioning and tuning. 


It takes a team with diverse and specialized backgrounds to conduct successful existing buildings studies.  At GMC Commissioning, we are experts in development, project management, facilities management, MEP engineering, systems integration, and building automation.  We bring technical expertise and tailored solutions to meet the needs of your facility.


  • Retro-Commissioning (RCx)

  • Re-Commissioning (ReCx)

  • Due Diligence Studies

  • Monitoring-Based Commissioning (MBCx)

  • Continuous Commissioning Solutions


  • Decrease Operating Expenses (OpEx)

  • Increase Net Operating Income (NOI)

  • Increase Occupant Productivity

  • Adhere to local codes and regulations