The General Contractor's Guide: Bid to Closeout

By Wyatt Cooper · Published October 13, 2026 · 8 min read

Key takeaways

A general contractor is responsible for delivering the whole work under its contract: pricing it, buying it out, building it to the documents and schedule, paying its subs, and handing over a finished building with its paper.
Each phase hands the next one its inputs: the bid becomes the budget, buyout becomes the commitments, and the subcontracts set how changes, billing and closeout run.
Most of a GC's risk is in the gaps between parties, so the job runs on records: RFIs, submittals, daily logs, change orders and pay apps, each with an owner and a date.
Closeout starts at buyout: the punch list and the closeout documents are what stand between substantial completion and final payment.

A general contractor's responsibilities run from bid to closeout: price the work and win it, buy it out with subcontracts that match the scope, plan submittals and the schedule, run the field (RFIs, daily logs, inspections, quality), manage changes and the budget, bill the owner and pay the subs, then close the job with a punch list, a closeout package and warranties. This guide walks each phase and links the detailed how-tos.

What a general contractor is responsible for

Under a typical design-bid-build or negotiated contract, the GC contracts with the owner to deliver the whole work shown in the contract documents, for a price and by a date. It does not do every trade itself: it hires subcontractors and suppliers, coordinates them, and stays responsible to the owner for their work. The architect and engineers design the building and, during construction, administer the contract for the owner; the GC builds it.

That responsibility includes quality. On federal construction, the contractor must "maintain an adequate inspection system and perform such inspections as will ensure that the work performed under the contract conforms to contract requirements", and replace or correct nonconforming work without charge (FAR 52.246-12). Private contracts say it differently, but the idea is the same: the GC answers for the work, its own and its subs'.

The sections below follow the job in order. Each names the GC's work in that phase and links the guides that go deeper. For the whole job from every party's seat, see the construction project lifecycle.

Bidding: price the work and win it

Bidding turns a set of drawings into a number you can stand behind. Break the scope into trade packages, invite enough qualified subs to each to get real competition, answer their questions in writing, and issue addenda to everyone at once. When the bids come in, compare them on the same scope, not just the price.

Write each trade's scope so a sub can bid it without guessing: the spec sections, the drawings, what is in and what is by others.
Level every trade before you carry a number: how to level subcontractor bids adds back missing scope and prices the exclusions so the lowest leveled bid, not the lowest number, wins.
Carry your own estimate for general conditions, self-performed work, fee and contingency.
Price the owner's alternates separately, as the bid form asks.

In Conflo: trade bids, bid leveling, the estimate and the proposal.

Buyout and preconstruction: contracts, submittals and the schedule

Once you win, buy the job out: award each trade and sign a subcontract whose scope exhibit matches the leveled bid, including the exclusions you accepted. Buyout is where the budget becomes commitments, and where the gap between the two is your buyout savings or loss.

Put the owner contract's terms that matter into each subcontract: retainage, pay terms, change notice, insurance, warranty and closeout obligations.
Write the closeout list into each subcontract now, from the closeout article of every spec section in its scope.
Build the submittal register from the specs and set the order: long-lead items first.
Collect each sub's insurance certificates and compliance documents before it mobilizes.
Build the schedule with the subs who will work to it, and agree each one's schedule of values.

In Conflo: buyout, commitments, submittals, compliance and the schedule.

Construction: run the field on records

In the field, the GC's job is coordination: the right trade in the right place with the right information, materials and inspections. Most disputes start in a gap between two parties, so put every question, answer and instruction on a record with a name and a date.

RFIs: one question each, with the sheet, the spec section, a proposed answer and a due date. See how to write an RFI.
Submittals: review them against the specs before they go to the architect, and do not let anything be bought or built before it is approved.
Daily logs: crews, work done, deliveries, weather, delays and visitors, every day.
Inspections: schedule them ahead, and log the results and the corrections.
Quality: punch each area as it finishes, not just at the end.

In Conflo: RFIs, submittals, daily logs, inspections and meetings.

Money: changes, the budget, pay apps and paying subs

The money side runs alongside the field. Every change has a reason, a price and a schedule effect; every month the owner is billed for the work in place and the subs are paid from it. Keep the budget current so you see a loss while there is still time to act on it.

Change orders: price them from the subs' quotes and your own costs, apply the markups your contract allows, and get them approved before the work where you can. See how to price a change order.
Pay apps: collect the subs' pay applications, review each against the work in place, roll them into the owner pay app, and calculate retainage correctly.
Lien waivers: collect them from subs and suppliers with each payment, conditional for this payment and unconditional for the last.
Budget: track original budget, approved changes, commitments and costs to date against the projected final cost.

Paying subs on time is a legal duty as well as a relationship. On federal fixed-price construction, each payment request certifies that subs and suppliers have been paid from earlier payments and will be paid on time from this one (FAR 52.232-5), and subcontracts must require payment within 7 days after the prime is paid, with interest if late and written notice of any withholding (FAR 52.232-27). States have their own prompt payment laws; check yours. The sub's side of billing is in how a subcontractor fills out a pay application.

In Conflo: change orders, budget, commitments and pay applications.

Closeout: punch list, substantial completion and the package

Closeout is where jobs lose months. Punch each area as its finishes go in, so that when you ask for the substantial completion inspection your own list is nearly closed. See how to build a punch list, or start from the free punch list template.

Substantial completion is the date the owner can use the work for its intended purpose; on AIA documents, A201-2017 Section 9.8.1 defines it that way (AIA Contract Documents). On AIA-based contracts the contractor prepares the list of items to complete or correct, the architect verifies and amends it, and the certificate sets the time to finish them and who takes on maintenance, utilities and insurance; warranties start that day unless it says otherwise (AIA's G704 summary). How the architect decides is in how an architect decides substantial completion.

Then assemble and deliver the closeout package: record drawings, O&M manuals, warranties, attic stock, training records, test reports and final lien waivers, by spec section. See how to assemble a closeout package, and for what the owner checks, what an owner should get at closeout. Final payment usually waits for the package and the closed punch list.

In Conflo: the punch list, the closeout package and warranties.

Every guide for general contractors

How it works in Conflo

Conflo puts these phases on one platform: bidding, preconstruction, the field, financials and closeout, with your subs, the owner and the design team on the same project. Subcontractors, owners and architects join free, and every plan has unlimited users; plans and prices are on the pricing page.

A few connections that matter: awarding a trade bid opens a draft subcontract for the winner at the leveled amount; a change order can link to the RFI that caused it, and once executed it changes the contract sum on the pay apps; a sub's approved pay app rolls into the owner pay app; and the punch list carries into closeout alongside the closeout package, which can be delivered to the owner only when every document is approved.

The Closeout package in Conflo: closeout documents grouped by spec section and company, each requested, to review or approved with its file and due date, and progress toward delivering the package to the owner. — The closeout package in Conflo at the end of a job: documents by spec section and company, and what is still outstanding before it goes to the owner.

The bottom line

A general contractor's job is to deliver the whole work and answer for it: price it, buy it out, build it to the documents, pay the people who build it, and hand over a finished building with its paper.

Each phase depends on the records kept in the one before it, so set them up at buyout and keep them current to the last day.

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Sources

FAR 52.246-12, Inspection of Construction — Acquisition.gov, U.S. General Services Administration. Read October 16, 2026.
FAR 52.232-5, Payments under Fixed-Price Construction Contracts — Acquisition.gov, U.S. General Services Administration. Read October 16, 2026.
FAR 52.232-27, Prompt Payment for Construction Contracts — Acquisition.gov, U.S. General Services Administration. Read October 16, 2026.
The Construction Schedule – Substantial Completion Considerations — AIA Contract Documents (The American Institute of Architects). Read October 16, 2026.
Summary: G704–2017, Certificate of Substantial Completion — AIA Contract Documents (The American Institute of Architects). Read October 16, 2026.

Questions

What are a general contractor's main responsibilities?

Delivering the whole work under its contract: pricing and winning the job, buying it out with subcontracts, planning submittals and the schedule, running the field, managing changes and the budget, billing the owner and paying subs, and closing out with a punch list, closeout package and warranties.

Is the general contractor responsible for subcontractors' work?

Usually yes. The GC contracts with the owner for the whole work and answers to the owner for its subs' work, while each sub answers to the GC under its subcontract. Your contract sets the details.

What is the difference between a general contractor and a construction manager?

A general contractor usually contracts to build for a price. A construction manager may advise the owner during design and, as construction manager at risk, then contracts to build, often for a guaranteed maximum price. The roles overlap; the contract defines them.

When does a general contractor's job end?

At final completion and final payment, once the punch list is closed and the closeout package delivered, and then the warranty period runs, commonly one year for the contractor's general warranty. Check your contract for the term and its start date.