They describe two levels of commissioning that closely resemble the LEED Basic and Enhanced Commissioning approaches, which they call Basic and Advanced. They've also managed to come with a handy chart of what it costs to commission, which is shown below. Here's an excerpt:
The Two Tiers
Basic commissioning services may be performed by a third party or someone in-house, however, whoever assumes the role of commissioning agent should perform the following tasks:
■ Verify that lighting controls have been installed per design and are functioning as intended.
Additional commissioning services should be performed by a third-party commissioning agent rather than someone in-house. In order to be effective, the agent should be retained at the schematic design phase or earlier. The commissioning agentshould perform the following tasks:
■ Establish and follow a commissioning plan.
How Much Will It Cost?
Commissioning pays for itself. Some of the savings created by commissioning are rarely quantified: first-cost (such as equipment downsizing), ongoing non-energy benefits, reduced change-orders, and correcting causes of premature equipment breakdown. One study showed median one-time, non-energy benefits at $0.18/ft2 for ten renovation projects and $1.24/ft2 for twenty-two new construction projects. The more frequently quantified costs showed median whole-building energy savings of 15% and payback times of 0.7 years for renovation projects. New construction payback time was 4.8 years.2