Roles & authorities
Commissioning agent (CxA)
Also called: CxA
The commissioning agent verifies that a building's systems — mechanical, electrical, controls, life safety and the rest — were installed correctly and actually perform as the design intended, not just that they were installed. They develop the commissioning plan, witness functional testing, and document that each system meets the owner's requirements before it's turned over. On many projects the CxA is engaged directly by the owner to stay independent of the installing contractors; the scope is set by the owner's project requirements and the contract.
Why it matters
Installed is not the same as working. The commissioning agent is who catches a system that passed inspection but doesn't sequence correctly, doesn't hit setpoint, or fails over the way it should — problems that only show up when the system is exercised end to end.
Commissioning runs alongside inspection, not instead of it. A building inspector confirms the install meets code; the CxA confirms it performs.
What proves it
Completed functional test scripts, witnessed and signed, with the results recorded and any issues logged to resolution. Photos and readings captured during the tests, filed with the commissioning record, make the performance verifiable at turnover instead of taken on trust.
Standards it's verified against
Checklists that put commissioning agent (cxa) to work
Free, field-ready checklists, each with the photo every item needs before it can be submitted.
Related terms
- Owner's representativeThe person who acts for the owner on site, protecting the owner's interests in scope, quality, schedule and cost.
- Quality control managerThe person responsible for running the project's quality control program — inspections, hold points and the records that prove them.
- Building inspectorThe code official who inspects work against the adopted building code and approves each phase before it can continue.
- Authority having jurisdiction (AHJ)The office or official empowered to enforce a code and approve materials, methods and completed work on a given project.
- Engineer of record (EOR)The licensed engineer who stamps a design discipline and stays responsible for its intent through construction.
- Special inspectorA qualified inspector who verifies specific high-risk work — welds, bolting, concrete, anchors — beyond the routine building inspection.
Knowing the term is step one. Proving it is the job.
RTI holds the submit button until every mandatory item is answered and the photos are attached, then chains the record so it can be proven untouched later.