Timeline for Hiring a Commissioning Agent

It is not a requirement, but as a CxA who has been brought on to projects late in the game, it makes the job of commissioning a lot harder and more expensive (not just for the CxA, but also for the contractors). Also bringing the CxA into a project as late as bid makes it hard to integrate them into the team, which can lead to communication issues and conflict down the road. If you are bringing a CxA onto the team after bid, you need to make sure that the Owner's Project Requirements (by Owner) and Basis of Design (by design team) have already been completed, and that a Commissioning specification has been included in the bid documents. Otherwise, you could risk losing prerequisite EAp1.