Which of the following is a pre-design phase focus for comprehensive commissioning?

• A. Write Cx specifications
• B. Start TAB testing
• C. Establish commissioning
• D. Review OPR and DID

Answer: (C)

In the pre-design stage, the key focus is to set up the commissioning process itself—determine who leads it, who participates, what will be delivered, and how it will fit into the project schedule and budget. Establishing a clear Cx framework creates the governance, responsibilities, and performance expectations that guide design decisions, construction activities, and future operations. With this foundation, the Cx plan, goals, and required deliverables are defined early, ensuring the entire project is aligned to meet owner requirements from the start. TAB testing happens during construction to verify and balance systems, so it isn’t a pre-design activity. Writing Cx specifications typically follows once the program is established, embedded into design and construction documents. Reviewing OPR and DID is important as well, but the essential pre-design action is setting up the commissioning program itself.