The Owner's Guide to a Commercial Building Project

By Wyatt Cooper · Published October 16, 2026 · 7 min read

Key takeaways

The owner's biggest decisions come before construction: the delivery method, the contract form and who builds it.
During construction the owner's job is to decide on time: approve or question each pay application, change order and design question that waits on you.
Every dollar the owner pays should trace to a contract line, an approved change or a measured quantity; ask for the backup when it doesn't.
Closeout is where owners lose the most leverage: hold retainage until the punch list, warranties, manuals and final lien waivers are in.

On a commercial building project the owner sets the goals, budget and schedule, chooses the delivery method and the team, signs the contracts, pays the contractor monthly, decides on changes, and accepts the finished building. The owner doesn't direct the trades; it decides, on time, what is waiting on it. This guide walks each phase and links the detailed guide for each step.

What the owner is responsible for

The Construction Management Association of America's owner's guide defines the owner as "the private or public organization ultimately responsible for the proper execution of the project". In practice that means five jobs no one else can do for you: set the program, budget and schedule; choose how the project is delivered and who delivers it; pay for the work as it is done; decide on changes to scope, price and time; and accept the building at the end.

The contract spells out the rest. Under the AIA's general conditions (A201–2017), for example, the owner furnishes surveys of the site (§2.3.4), gives the contractor reasonable evidence on request that it has arranged the financing (§2.2.1), and signs change orders with the contractor and architect (§7.2.1). Other contract forms divide the duties differently, so read yours before the job starts, not when a dispute does.

Most owners also hire help. The CMAA's guide describes an agency construction manager who acts as the owner's principal adviser through the job, and an owner's representative does a similar job on smaller projects. Neither replaces your decisions; they make sure you have what you need to make them on time.

Before design: choose how the project will be delivered

The delivery method sets how many contracts you sign, when the builder joins and when the price is fixed. Design-bid-build fixes the price by bid on finished drawings; design-build puts design and construction in one contract; construction manager at risk brings the builder in during design and caps the price before construction. The side-by-side is in design-bid-build vs design-build vs CM at risk.

If you choose CM at risk, the price you agree is usually a guaranteed maximum price: actual cost plus a fee, up to a ceiling, with savings returned or shared. What is a GMP contract works an example of both a saving and an overrun, so you can see what the contract's savings clause is worth before you sign it.

Questions to settle here: how certain is the scope, how fast must the building open, how much will the design change, and how much of your own staff time can the project take? The CMAA's guide lists the same considerations (time, flexibility, preconstruction help, design interaction and financing) as the basis for choosing a method.

Choosing the contractor

Shortlist on qualifications before you look at price: similar work, the named project manager and superintendent, financial strength and bonding, safety, and the schedule approach. The federal test of a "responsible" contractor (FAR 9.104-1) is a useful checklist even on private work. The full method, with a scoring example, is in how to choose a general contractor.

When proposals arrive, compare them line by line, not cover page to cover page. Price every exclusion and every short allowance from your own estimate so each total covers the same scope, then weigh schedule and terms. How to compare contractor proposals shows three proposals where the lowest cover page finishes second once the exclusions are priced.

Contractors do the same thing one level down when they choose their subcontractors; how GCs level sub bids shows what your GC's leveling sheet should look like, which is worth asking to see on a GMP job.

During construction: decide on time

Once work starts, the owner's calendar fills with decisions that hold up the job if they wait: questions from the contractor that need the owner's answer, change orders to approve, and a pay application every month.

Pay applications: check that each line's percent complete matches what is in place, that stored materials are allowed by the contract and documented, and that retainage is held at the contract's rate. How retainage is calculated works the numbers, and how a sub fills out a pay app shows where the GC's billing comes from.
Change orders: ask what changed, why, and how it was priced, with the subcontractor quotes and the markup the contract allows. How to price a change order shows a priced example from the contractor's side, which tells you what backup to ask for.
Design questions: the contractor's RFIs go to the architect, but some answers change scope or cost and need your decision. How to write an RFI explains how they move and when an answer becomes a change order.
Progress: ask for a weekly update with the schedule status, the issues and what is waiting on you, and attend the owner-architect-contractor meeting.

Pay attention to notice deadlines. Most contracts give the contractor a set number of days to claim added cost or time and give the owner a set number of days to answer; a decision that sits on your desk can become a delay claim.

Closeout: what to collect before final payment

Closeout starts at substantial completion, when the building is complete enough for you to occupy or use it for its intended purpose (A201–2017 §9.8.1). The contractor lists what is left, the architect inspects, and the contractor finishes those items. How to build a punch list shows how the list is made and closed.

Hold the final payment and the remaining retainage until you have what you are owed besides the building: operation and maintenance manuals, as-built drawings, warranties in your name, attic stock, training for your staff, and final lien waivers from the contractor and subs. Under A201–2017 the contractor also corrects nonconforming work found within one year after substantial completion (§12.2.2.1), on top of any longer warranties the documents require; put those dates on a calendar.

Every guide for owners

How it works in Conflo

In Conflo the owner works on the same project as the GC. The owner reviews and approves the GC's pay applications, and approves or rejects change orders with the scope, price, reason and schedule impact in view (never the GC's cost lines or markup). It follows the closeout package and sees when it has been delivered, and sees every warranty on the building, when it ends and who to call.

Before award, a GC can send its proposal through Conflo: the owner reads it from an emailed link, which is view-only, and someone at the owner's company who can approve and sign accepts it, declines it or asks for a revision while signed in to an owner account. Conflo doesn't run an owner's request for proposals to several GCs or level their proposals side by side today.

A change order as the owner sees it in Conflo, waiting on their approval: the price, two days added to the schedule, what the contract becomes and when the decision is due, Reject and Approve buttons, the scope description, line items at the owner's price with no cost codes or markup, the GC review step already done, and the RFI that caused the change. — A change order as the owner sees it in Conflo, waiting on approval: the price, the days added to the schedule, what the contract becomes, the line items at the owner's price and the RFI that caused it.

The bottom line

The owner's job is to decide: the delivery method and the team before construction, pay applications and changes during it, and acceptance at the end. Decide early, decide on time, and hold back final payment until closeout is complete.

Conflo puts the owner, the GC, the design team and the subs on the same record from proposal to closeout. Join the waitlist to run your next project in it.

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Sources

An Owner's Guide to Construction and Program Management (2011) — Construction Management Association of America. Read October 16, 2026.
Summary: A201–2017, General Conditions of the Contract for Construction — AIA Contract Documents. Read October 17, 2026.
FAR 9.104-1, General standards (contractor responsibility) — Acquisition.gov (U.S. General Services Administration). Read October 16, 2026.

Questions

What is the owner's role in a construction project?

The owner sets the goals, budget and schedule, chooses the delivery method and the team, signs the contracts, pays for the work as it is done, decides on changes, and accepts the finished building. The contractor directs the work; the owner makes the decisions only it can make.

Does an owner need an owner's representative?

Not always. Owners without in-house construction staff often hire an owner's representative or an agency construction manager to advise them and manage the process. The larger and more complex the project, the more that help tends to pay for itself.

What should an owner check on a pay application?

That each line's percent complete matches the work in place, stored materials are allowed and documented, change orders billed are approved, retainage is held at the contract rate, and lien waivers for the last payment are attached.

When should an owner release retainage?

When the contract says, usually at substantial completion for part of it and at final completion for the rest, once the punch list, closeout documents and final lien waivers are in. State law may set deadlines, so check your contract and your state's law.