Construction Closeout Checklist: What the Contract Asks For Before Final Payment

Closeout feels like paperwork. It is really the last commercial event on the job. Final payment and your retainage are released against a list of documents, and that list is written into your contract, usually in the payment section, long before anyone on site starts thinking about it.

So the most useful closeout checklist is not a generic one. It is the one in your own contract.

To show what that looks like, we read a real one: the public bid package for DFW Airport's Data Center 1 HVAC/BAS & Electrical Rehabilitation (Solicitation PA1971, bid March 2026). Every requirement below is quoted or closely paraphrased from its General Provisions, with the clause and page so you can check it.

What has to be on file before final payment

Clause 100-8, Acceptance and Final Payment, is direct about it:

Neither the final payment nor the remaining retained percentage, including any retainage withheld, shall become due until the Work has been fully completed and accepted in accordance with the requirements of the subsection titled FINAL ACCEPTANCE of Section 50 and the Contractor submits to the Owner: …

What it means: Your retainage waits until every item below is in, including each subcontractor's affidavit and waivers.

The clause then lists seven things the contractor must submit.

#	What the contract asks for	What to have ready	Who usually owns it
a	An affidavit that payrolls, material and equipment bills and other debts connected with the Work have been paid or satisfied	Signed affidavit, plus the same affidavit from each subcontractor	Project accounting
b	Consent of surety to final payment	Surety consent letter	Commercial or finance
c	Data establishing payment of those obligations: receipts, releases and lien waivers, in the form the owner designates	Final lien waivers from every sub and supplier, in the owner's form	Project manager and accounting
d	A certificate that insurance required after final payment is in force, with a statement that you know of no reason it won't renew	Insurance certificate and the written statement	Risk or insurance
e	Manufacturer warranties, product data, O&M manuals and all subcontractor, manufacturer and supplier warranties	Complete warranty and O&M set, executed for the owner's benefit if directed	Project engineer
f	A current set of as-built documents marked with field changes, and one copy of approved submittals, in the media the owner designates	As-builts in the owner's format, plus approved submittals	Superintendent and project engineer
g	All original permits, licenses and certificates	Originals, not copies	Project manager

The clause also says you must get the affidavits and surety consents from your subcontractors before you hand them to the owner. One late sub can hold the whole package.

None of this is unusual. What matters is that it is specific. "Lien waivers" means waivers in the form the owner designates. "As-builts" means a current set in the media the owner designates. A package that is almost right still waits.

Closeout deadlines that are easy to miss

The documents are only half of it. The same contract sets clocks that run at the end of the job, and some of them close doors for good.

Requirement	Clause and page	What happens if you miss it
Give the owner notice of Final Completion when all items of Work are complete. The owner then inspects.	50-16, GP-22	Final acceptance, and everything that depends on it, waits
Resolve any dispute over the engineer's final estimate within 30 calendar days of receiving it. After that you can approve it under protest, and the disputed quantities are handled as a claim.	100-8, GP-62	The dispute moves into the claims process
Invoice your costs promptly. "No payment shall be made for Work or costs incurred more than ninety (90) calendar days prior to the date the invoice is received by the Owner."	100-5, GP-59	Costs older than 90 days may not be paid
Raise any differing site conditions request before Substantial Completion. "No request … shall be allowed if made after Substantial Completion or final payment, whichever comes first."	50-17, GP-23	The request is barred
Pay each subcontractor its retainage within 7 days of receiving it from the owner, or sooner if the Texas Prompt Pay Act requires.	100-5, GP-59	A breach of the prime contract, and a problem with your subs

The 90-day billing rule and the differing site conditions cut-off are the two that cost real money. Both are easy to read once and forget, and both are hard to fix after the fact.

Owner audit rights keep running after the last payment

Many teams treat final payment as the end. This contract does not.

Clause 100-9, Audit and Records (GP-64), gives the owner the right to examine your "books, records, documents, accounting procedures and practices, correspondence, instructions, drawings, receipts, subcontracts, purchase orders, vouchers, memoranda, and any other supporting evidence." It covers your subcontractors, suppliers and vendors too, and it explicitly includes the cost or pricing data behind modifications.

And it lasts:

The information and documents described in this Section shall be made available at the office of the Contractor at all reasonable times, for inspection, audit, reproduction, until the expiration of four (4) years from the date of final payment or for such longer period as may be required by law.

What it means: Keep the backup for every cost and change order for at least four years after final payment.

Records tied to claims or litigation stay open for four years after those are resolved.

In practice that means three things:

1. Keep the backup for every change order, not just the signed change order. The owner can ask how you priced it.
2. Flow the record-keeping requirement down to your subcontracts. Their records are in scope too.
3. Know where your project records will live after the team disbands. Four years is longer than most project folders survive.

Build the list at award, not at closeout

Every item above can be read on the day the contract is signed. That is the best time to do it.

• Pull the closeout requirements out of the contract at award. Payment section, closeout section, warranty and records clauses, and any special provisions that change them.
• Give each item an owner and a format. "Lien waivers, owner's form, accounting" is a plan. "Lien waivers" is a hope.
• Check what is on file every month, not in the last month. If an item has nothing behind it, you find out while the people who can fix it are still on the job.
• Write the closeout requirements into your subcontracts and tie them to payment, so the documents you need arrive with the work.

If you are the subcontractor

Your closeout list is the GC's list, flowed down, plus whatever your own subcontract adds. Ask for the prime contract's closeout and payment provisions early. In this contract, the GC owes you your retainage within 7 days of receiving it, and the owner will not release it until the full package, including your affidavit and waivers, is in.

The short version

Your contract already tells you what closeout takes. Read it at award, give every item an owner, and check it monthly. Watch the clocks that close doors: billing windows, claim cut-offs and the final estimate. And keep your records for as long as the owner can ask for them.

Every contract is different, so read yours. Your team decides what to pursue, and your counsel decides the legal questions.