What type of commissioning gives a building a second assessment?

Recommissioning refers to the process of re-evaluating and optimizing a building’s systems, typically after it has already been commissioned once. This type of commissioning is essential for ensuring that all systems are functioning optimally over time and may involve updating or modifying existing systems to meet current operational needs or efficiency standards. Recommissioning addresses performance issues, system updates, or changes in building use, which can lead to enhanced energy efficiency, improved occupant comfort, and reduced operating costs.

Other types of commissioning do not serve the same purpose as recommissioning. Acceptance commissioning occurs when a new building or system is initially reviewed to ensure it meets specific performance criteria before being officially accepted for use. Milestone commissioning refers to assessments at key project stages during construction or renovation, while continuous commissioning involves ongoing monitoring and adjustments to optimize building performance over time. However, it does not specifically pertain to giving a structure a "second assessment" as recommissioning does.