Commissioning implements a quality-oriented process for achieving, verifying, and documenting that the performance of facilities, systems, and assemblies meets defined objectives and criteria. The defined objectives and criteria are often referred to as the owner’s project requirements (OPR). The commissioning process uses the owner’s project requirements as the reference to determine acceptance of the design and construction. Commissioning includes verifying and documenting that the project operational and maintenance documentation and training of operation and maintenance personnel occur. The result should be fully functional systems that can be properly operated and maintained throughout the life of the building. CONSIDERATIONS Commissioning Objective Management and Responsibilities COMMISSIONING PROCESS Predesign-Phase Commissioning Design-Phase Commissioning Construction-Phase Commissioning Occupancy- and Operations-Phase Commissioning Life and Property Safety Check COMMISSIONING COSTS Design-Phase Costs (Including Predesign and Design) Construction- and Occupancy/Operations-Phase Costs Existing Buildings Certification