CBRE serves clients through four business segments: Advisory (leasing, sales, debt origination, mortgage servicing, valuations); Building Operations & Experience (facilities management, property management, flex space & experience, critical infrastructure); Project Management (program management, project management, cost consulting); Real Estate Investments (investment management, development). Install, repair, adjust, service and maintain electric or pneumatic control systems used for building heating, ventilation, air conditioning, and refrigeration systems and equipment, including calibration of related instruments, gauges, and control components.