The final phase of the project is project closure or close-out. This is a critical phase, which if not given proper attention can turn a good project into a problem for an owner. Close-out procedures include more than completion of the punch list—turning over the project to the client so they can transition to occupancy or operations. Clients must be provided all project information and close out documents such as manuals, warranties, as-builts and final accounting. Insurance must be changed from the course of construction to permanent property insurance. For many larger projects, a formalized process called commissioning is utilized where systems are tested for performance to ensure they deliver the specified requirements. It is difficult to stress enough the importance of training the Owner in how to use their facility.