GCA holds memberships at various professional organizations. These organizations and affiliations allow us to more effectively service clients by maintaining the most current information in the industry.


  • American Association of Airport Executives (AAAE)
  • American Association of School Administrators (AASA)
  • American Hotel & Lodging Association (AHLA)
  • American Society for Healthcare Engineering (ASHE)
  • Association of Physical Plant Administrators (APPA)
  • Association for Manufacturing Excellence (AME)
  • Building Owners & Managers Association (BOMA)
  • Building Service Contractors Association International (BSCAI)
  • DiversityBusiness.com
  • Greater Cleveland Partnership
  • International Facility Management Association (IFMA)
  • ISSA
  • National Association of College & University Business Officers (NACUBO)
  • National Fire Protection Association (NFPA)
  • National Interscholastic Athletic Administrators Association (NIAAA)
  • National Minority Supplier Development Council (NMSDC)
  • National School Boards Administration (NSBA)
  • Professional Grounds Management Society
  • Snow & Ice Management Association (SIMA)
  • U.S. Green Building Council (USGBC)
  • Warehousing Education & Resource Council (WERC)