How Do You Assemble a Construction Closeout Package?

The closeout package is everything the owner needs to run, maintain and repair the building, and everything that proves the job is paid and finished. The specifications say what is owed: Division 01 (often Section 01 77 00, Closeout Procedures, and 01 78 00, Closeout Submittals) sets the general rules, and each technical section lists its own closeout submittals.

Owners add their own lists. San Diego State University's closeout procedures, for one, ask at substantial completion for a turnover letter with the warranty start date, the current punch list, a 24/7 contact list of subcontractors for warranty items, O&M manuals for critical equipment, balance reports, the training attendance sheet and the certificate of occupancy; then at closeout for final warranty letters, final as-built drawings in DWG and PDF, all O&M manuals, attic stock and signed-off permits.

Do not wait for the last month. When you write each subcontract, read the closeout article of every spec section in its scope and write down what that company owes: one line per document, per section, per company. Put the list in the subcontract or its exhibit so it is not a surprise at the end, and so a sub's final payment can wait on it.

Read the warranty requirements closely. Federal construction contracts, for example, have the contractor obtain "all warranties that would be given in normal commercial practice" and, if the contracting officer directs, have them executed in writing for the government's benefit, with the contractor's own warranty running one year from final acceptance (FAR 52.246-21). On AIA documents, warranties start at substantial completion unless the certificate says otherwise (AIA's G704 summary). Know which date your warranties use before you accept them.

Request the documents for a trade as soon as its equipment is submitted and installed, not at substantial completion: an O&M manual can be compiled from approved product data, and a warranty form can be agreed long before its start date. Give each request a due date, and review what comes in the week it arrives.

• O&M manuals: does it cover the model installed, with the maintenance schedule and parts list, or is it a catalog?
• Warranties: does it name the owner, the right scope and term, and the agreed start date? Is it signed?
• As-builts: are the changes, RFI answers and field moves drawn in, in the format the owner asked for?
• Lien waivers: is it the final waiver, for the right amount and date?

Send back anything that is not right with a one-line reason, and track how often a company resubmits. The closeout log works like a punch list for paper: one item per document, an owner, a due date, and nothing closed until you have checked it.

The job is fictional: "Cedar Row Offices", a two-floor tenant fit-out built by a fictional GC, Pinecrest Builders. Three weeks before substantial completion, the closeout log stands like this. All companies are fictional.

The arithmetic: 3 + 4 + 3 + 4 + 5 + 4 = 23 documents; approved 2 + 3 + 3 + 2 + 1 + 3 = 14, to review 1 + 0 + 0 + 0 + 2 + 1 = 4, outstanding 0 + 1 + 0 + 2 + 2 + 0 = 5, and 14 + 4 + 5 = 23. The package is 14 / 23 = 61% approved, rounded.

The log tells the superintendent where to spend the week: Northgate Mechanical owes the most (two outstanding, two to review, and owner training not yet held), and Rook Plumbing's O&M manual and as-builts are both still out. Bramble Painting is done.

Assemble the approved documents in the order the owner asked for, which is usually by spec section. Hawaii's public works guide specification, for example, splits the O&M manual into facility information, primary systems information and product data, with the product data "organized by the divisions and sections of the construction specifications" so the owner can find the exact product installed (Hawaii DAGS TG 01770). Many owners now ask for electronic files; San Diego State, for one, asks for the final as-builts in DWG and PDF.

Deliver it with a transmittal listing every document, and keep the receipt. Final payment usually waits for the package and the closed punch list; on federal fixed-price construction, final payment follows "completion and acceptance of all work", a properly executed voucher, and a release of all claims (FAR 52.232-5). Check your contract for its own conditions. Owners, see what an owner should get at closeout.

In Conflo's closeout package, the GC requests documents by spec section: enter the section and its title, pick the company that owes it, tick each document type owed (O&M manuals, as-built drawings, warranty letter, attic stock, owner training, final lien waiver) and set one due date; each becomes its own item. Each sub sees only what its company owes and turns in the file; the GC can also turn one in on a sub's behalf.

The GC approves each document or sends it back with a note the sub sees until it resubmits. The package is grouped by spec section, shows the percent approved, how many are waiting on review and how many are overdue, and can be delivered to the owner only when every item is approved; the date and who delivered it are recorded. Warranties are logged separately with their start date and term, and Conflo works out each expiration and flags those ending within 90 days. Limits today: the six document types are fixed, so test reports, keys or permits are not their own types, and the package is delivered as a record, not compiled into one bound file.

A closeout package is assembled at buyout, not at the end: write down every document each company owes, request it as the work is installed, and review it the week it arrives.

If your log is mostly approved by substantial completion, final payment follows the punch list instead of waiting months for paper.

See how the closeout package works in Conflo

1. Facilities Design Guidelines, Section 01 77 00: Closeout Procedures — San Diego State University, Facilities Planning. Read October 16, 2026.
2. Technical Guide TG 01770: Closeout Procedures — Hawaii Department of Accounting and General Services, Public Works Division. Read October 16, 2026.
3. FAR 52.246-21, Warranty of Construction — Acquisition.gov, U.S. General Services Administration. Read October 16, 2026.
4. FAR 52.232-5, Payments under Fixed-Price Construction Contracts — Acquisition.gov, U.S. General Services Administration. Read October 16, 2026.
5. Summary: G704–2017, Certificate of Substantial Completion — AIA Contract Documents (The American Institute of Architects). Read October 16, 2026.