Who is responsible for the Post-Acceptance Phase Cx Report/Addendums?

• A. CxA
• B. Owner
• C. End user
• D. Architect

Answer: (A)

The Commissioning Authority is responsible for the Post-Acceptance Phase Cx Report and any addendums because this phase centers on verifying and documenting building-system performance after occupancy. The CxA collects test results, confirms that systems operate as intended under the Owner’s Project Requirements and Basis of Design, and records any issues, resolutions, and open items in the post-acceptance report. Addendums are issued to reflect changes, clarifications, or corrective actions discovered during occupancy, all under the CxA’s oversight. The Owner, End user, and Architect each have roles in ownership, operation, and design, but the formal documentation of post-acceptance verification and addenda is the CxA’s responsibility.