A systematic process of testing and verifying that building systems are installed correctly and operate per design intent before occupancy.
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In the Field
Commissioning agents are third parties hired by the owner to independently verify systems work. They generate punch lists for mechanical and controls contractors. Budget for commissioning early — last-minute surprises delay the certificate of occupancy.
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Rule of Thumb
Commissioning typically adds 0.5–1.5% to project cost but catches deficiencies before occupancy that would cost 10x to fix after the building is in use.