Commissioning and Closeout for Boulder-Area Buildings

Closeout in the Boulder Valley is partly an energy exercise, because the codes that apply here ask a building to prove what it was designed to do. Boulder County's code amendments adopt the 2021 International Building Code and 2021 International Energy Conservation Code with local amendments, including the county BuildSmart energy provisions, and each town within the metro layers on its own requirements. The building is not finished when the paint dries. It is finished when the systems have been tested, the records are complete and the inspector signs.

We treat commissioning and closeout as a phase with its own plan, starting months before substantial completion. The plan lists the systems to test, the documents to deliver, the inspections to schedule, the training to give and the warranty responsibilities that continue after turnover. Owners get a building they can run, with the information their facility staff will need on the first day.

It matters most to owners who will operate what they build: property management firms, institutions and public agencies that live with the building's performance for a long time.

What closeout actually includes

Functional performance testing of mechanical, electrical, plumbing, fire protection and controls systems is the core. We coordinate the commissioning agent, the trades and the design engineers so that each system is started up, balanced, tested under real conditions and documented. Then come the punch list, final cleaning, the owner training sessions, the operation and maintenance manuals, the as-built drawings, spare parts and the warranty package.

The final inspections and certificate of occupancy sit beside this work. Fire marshal, building, electrical, mechanical and plumbing inspectors each have items they check, and each town has its own sequence. We keep a closeout register that lists every required inspection, every deliverable and every open item, and review it weekly from about 90 days before the target completion date. The register is shared with the owner and the architect, so everyone sees the same list and no item exists only in one person's notebook.

Energy documentation and the edition that applies

Boulder's energy rules give closeout teams more to track. The City of Boulder exempts large S-1 occupancies with constant vehicle traffic, labs and commercial cooking from the all-electric rule, but natural gas used under these exceptions must be offset by on-site renewables except for commercial cooking, emergency generators and lab and industrial process loads. That means a building using an exception needs proof that the offset exists and works, which belongs in the commissioning record. We raise these exceptions in permitting and entitlements at the start, so that closeout is where the early planning pays off and not where a surprise first appears.

Edition questions come up at the end. Longmont's building codes page lists the 2024 International Codes as adopted as of July 1, 2026, with the 2024 Metro Cohort Model Code for energy, while an earlier tracker still showed the 2021 codes with 2024 expected. Because the two sources differ, we confirm with Building Inspection which edition governs each permit, and we build the closeout documents for that edition. The same care applies at Longmont and across the region.

Starting commissioning at design, not at turnover

Commissioning works best when the commissioning agent reads the design early. A controls sequence that cannot be tested, a damper without an access panel or a sensor in the wrong place is cheap to fix on paper. We bring the agent into long-lead submittal reviews so that equipment arrives with the features commissioning needs.

During construction, we keep a deficiency log and require each trade to complete its own startup checklist before the agent arrives. When the agent walks in, the systems are ready to test, not ready to start. That discipline shortens the test period and keeps the owner from paying for repeated visits. For a data center or other mission-critical space, integrated systems testing with generators and switchgear in the loop is its own event, scheduled weeks ahead because the utility, the agent and the owner all have to be present, and a failed test means another round of that scheduling.

How we manage the closeout

A superintendent who has walked every room can run a thorough punch list. We schedule and track the final cleaning, touch-up, door hardware adjustment and minor repairs closely, so that items are closed the same day instead of waiting for a trade to return. For commissioning, we arrange labor for access, such as opening ceilings, moving equipment and supporting test setups.

We also prepare owner training around the actual staff, not a generic schedule. Facility managers learn the building they will run, using the same systems they will use. Recorded sessions and a clean binder, in paper or digital form, stay with the building. On tenant improvement work the closeout is smaller but no less important: a tenant who cannot find the panel schedule or the warranty contact on day one will call us, and we would rather have handed over a page that answers it.

Items that delay occupancy if ignored

Elevator approvals, fire alarm acceptance tests, backflow certificates, utility connections and special inspections are the usual late items. In unincorporated Boulder County, elevator installations and inspections are left to the Colorado Division of Oil and Public Safety, so we schedule that approval on a different path than the building department's. Waiting on any one of them can hold a certificate of occupancy for weeks.

Warranties start at different dates for different systems. We record those dates, hand over the contacts and set a walk-through before the first-year warranty period ends. Owners often skip that step, and the problems it would have found appear later at their own expense. For medical office buildings and other licensed spaces, we also line up licensing inspections with the code inspections.

Plan closeout while the walls are going up

Share the project schedule and we will propose a commissioning and closeout plan with dated deliverables, inspections and training sessions.

Questions Owners Ask

When should commissioning start?

During design, if possible. The commissioning agent reviews drawings and submittals so that equipment and controls can be tested. Field testing begins when systems are complete and ready, and the schedule reserves time for correcting deficiencies before turnover.

What is the difference between substantial completion and final completion?

Substantial completion means the owner can use the building for its intended purpose, while minor items remain. Final completion means all items, documents and closeout deliverables are done. We define the criteria in writing at the start so both parties agree on what each milestone means.

Do energy code exceptions need extra documentation?

They can. In the City of Boulder, gas used under certain exceptions must be offset by on-site renewables, with listed exemptions for cooking, generators and lab or industrial process loads. We make sure the commissioning and closeout documents show how the building complies.

Who inspects elevators in unincorporated Boulder County?

The county deletes IBC Chapter 30 and leaves elevator installations and inspections to the Colorado Division of Oil and Public Safety. We schedule that approval separately and track it as a closeout item.

What do we receive at turnover?

As-built drawings, operation and maintenance manuals, commissioning reports, test and balance data, warranties, spare parts, training records and inspection certificates. We organize them by system so your facility team can find what they need.

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