Substantial completion and punch lists explained

Why the date matters

Many things change on the day the architect or owner certifies substantial completion. Which ones apply depends on the contract, but common ones are:

• Liquidated damages stop running, where the clause counts to substantial completion. See liquidated damages.
• Warranties start, unless the contract ties them to another date.
• Responsibility shifts. The certificate often says who now pays for utilities, security, maintenance and property insurance.
• Retainage may be reduced, with an amount kept back to cover the punch list. See retainage.
• Legal time limits may start. In some states, the clock on claims for defects runs from substantial completion. That is state law, and it differs.

Because so much rides on the date, the certificate of substantial completion usually records the date, the list of items still to finish, the time allowed to finish them, and the shift of responsibilities, signed by the owner, contractor and architect.

How a punch list usually runs

1. The contractor walks the work first and makes its own list of unfinished or incorrect items.
2. The contractor asks for an inspection, saying the work is substantially complete.
3. The architect or owner inspects. If the work is not substantially complete, the contractor finishes more and asks again. If it is, the inspector adds its own items to the list.
4. The certificate is issued with the punch list attached.
5. The contractor and subs finish the items, and each is checked off. A back-check walk confirms them.
6. Final completion and closeout: punch done, record drawings, operation and maintenance manuals, warranties, training, final lien releases and the final payment application.

A punch list is not a list of new work. If an owner adds items that were never in the contract, those are changes. See change orders.

A worked example with invented numbers

A contract sum of $1,400,000 with 5% retainage. At substantial completion all work is billed, and the contract allows the owner to keep twice the value of the open punch list items, releasing the rest of the retainage.

• Retainage held: 1,400,000 x 0.05 = $70,000
• Punch list valued at: $18,000
• Amount kept back: 18,000 x 2 = $36,000
• Retainage released now: 70,000 - 36,000 = $34,000

Check: 34,000 + 36,000 = 70,000, and 36,000 / 18,000 = 2.

The multiple of 2 is this invented contract's term. Contracts and, on some public work, state laws set their own amount, so read the clause rather than assume one.

Partial occupancy

An owner sometimes wants to move into one floor or wing before the rest is done. Many contracts allow substantial completion of a portion, with its own certificate, its own punch list and its own shift of insurance and maintenance. The building department may also need to allow occupancy of that part first. Contractors protect themselves by recording the condition of the occupied area at handover, since later damage by the owner's people is otherwise hard to separate from defects.

Keeping the punch list short

• Run a quality walk on each floor before finishes, not only at the end.
• Assign each item to a responsible sub with a date.
• Close items in the log as they are fixed, with a photo.
• Hold closeout documents as you go, not in the last week.

Common mix-ups

• Substantial is not final. Substantial completion comes first, with a punch list still open. Final completion is when everything, paperwork included, is done.
• Occupancy and substantial completion are separate approvals. One comes from the building department, the other is the contract's.
• Treating owner additions as punch items. New scope is a change, priced and signed.
• Assuming a release amount. The holdback for open items is set by the contract and, where it applies, state law.

On the NASCLA exam

The bulletin lists subject areas, not topics. We place closeout under General Requirements, 25 of the 115 scored questions, with the money side under Procurement and Contracting Requirements. Construction Jobsite Management is a listed title that fits closeout, so tab its closeout topic.

Practice it

Run the release figure above with the free retainage calculator, and read lien waivers for the releases that go with final payment.

Take the free 10-question check

Start the free 10-question check. It is weighted to the twelve NASCLA subject areas, needs no signup and explains every answer, so you see which area to study first.

The NASCLA Commercial course has a lesson for each of the 12 subject areas that shows which listed reference to open and how to apply it, original practice questions with every answer worked, and four timed practice exams of 115 questions on a 330-minute clock. Your scores come back by subject area, so you know where the next study hour goes. See the course.

Not affiliated with or endorsed by NASCLA or PSI. NASCLA and PSI are named only to identify the exam and its test vendor.

Sources

Show the list

• PSI Candidate Information Bulletin 1458, content outline and reference list, updated 7 Jul 2026. Retrieved 5 Nov 2026.
• NASCLA Commercial Exam, NASCLA. Retrieved 5 Nov 2026.
• All examples use invented numbers. Contract terms are described in general; release amounts and time limits are set by each contract and jurisdiction.