March 12, 2026 · Updated October 6, 2026

What Does an Owner's Representative Do? A Guide for Ontario

An owner’s representative is a senior construction professional you hire directly to run your project on your behalf, from the first budget to the last deficiency. So what does an owner’s representative do from week to week? They set the budget and schedule, manage the design team, run procurement, set up the construction contract, review the contractor’s monthly claims and change requests, and report to you in plain language. They don’t design the building and they don’t build it. You make the decisions, and the rep makes sure each one reaches you on time, with the options laid out and a recommendation attached.

This guide sets the role out phase by phase for owners in Toronto and across Ontario: what the rep does, what you decide, what you receive, and where the Construction Act and the standard CCDC contracts shape the work. If you’re already weighing help on a project, our page on owner’s representation for Ontario projects explains how we set up an engagement.

What does an owner’s representative do, in short?

The rep works for the owner and nobody else on the project. We hold no construction contract, employ no trades and carry no design stamp, so the advice we give doesn’t depend on how the building gets delivered or who delivers it. What we bring is experience: we’ve made most of the decisions on your project before, on other projects, and we can tell you what each option tends to lead to.

In practice the work splits into five phases. The table below is the short version of everything that follows.

Not every engagement covers all five. Some owners bring us in for one phase, one tender or a single review of a budget. The earlier we start, the more of the project’s direction is still open to change, which is why we’ve written separately about when to bring in an owner’s rep.

What an owner’s rep does in each phase

Feasibility: the budget and schedule the project will be judged against

Every later decision gets measured against the first budget, so the rep’s first job is a number that holds up. That means the full project cost, not only construction: design and engineering fees, permits and any development charges, legal, financing, furniture and equipment, the move, HST, and a contingency sized to how much is still unknown. We’ve written about how much contingency is enough at each stage, and about why the first budget matters most.

Alongside the budget, the rep builds a master schedule. It includes the things owners tend to leave off: their own approval dates, board or lender sign-offs, permit review, long-lead equipment, and the date the space has to be in use. A schedule that shows when you need to decide something is far more useful than one that only shows construction.

The rep also outlines the ways the project could be delivered (more on those under procurement below) and lists the main risks: site conditions, approvals, existing building unknowns, market pricing, and anything the business case depends on.

Who counts as the owner

People search for this one, and the answer matters on fit-outs. Under Ontario’s Construction Act, the “owner” is anyone with an interest in the premises at whose request, and for whose benefit or on whose behalf, the work is done. A tenant doing its own fit-out is usually the owner of that improvement under the Act, with the payment and holdback obligations that come with it. Your lawyer confirms the position for your lease or title; the rep makes sure the schedule and cash flow are built around it.

Design: keeping the drawings and the budget in step

Once the project is a go, the rep helps you hire the design team: the architect or interior designer, and the engineers. CCDC publishes a standard owner–consultant agreement, CCDC 31-2020, and whichever form you use, the rep checks that the scope of services matches what the project needs, including site review during construction and payment certification.

During design, the rep’s job is to keep the drawings, the budget and the schedule moving together. In practice that looks like:

• A clear written brief, so the design team designs to your program, not an assumed one.
• An estimate at each design stage (schematic design, design development, construction documents), reconciled line by line to the budget.
• Options when an estimate comes in high, with what each one changes in the building. Our article on value engineering without wrecking the building covers how to do this well.
• A decision log, so you can see what has been decided, what’s open and when each open item needs an answer.

In Toronto, the rep also plans the approvals into the schedule: zoning review, a Committee of Adjustment application if a variance is needed, and the building permit itself. The design team prepares the drawings and answers the examiner’s comments; the rep keeps track of where each application sits and what it means for the start date.

Procurement: choosing the route and the contract

How you buy the construction is one of the largest decisions on the project, and most owners make it only a few times. The standard Canadian contract forms come from CCDC, and the main routes in Ontario are:

• Stipulated price (CCDC 2-2020): one general contractor, one price for the drawn scope, usually tendered once the design is complete.
• Cost plus (CCDC 3-2016): the contractor is paid its costs plus a fee, which suits work that can’t be fully defined in advance.
• Construction management for services (CCDC 5A): the construction manager is paid a fee to manage the work, and the owner holds the trade contracts, usually on CCDC 17.
• Construction management for services and construction (CCDC 5B): the construction manager holds the trade contracts and performs the work.
• Design-build (CCDC 14): one party designs and builds for a stipulated price.

CCDC 5A, 5B and 17 all have 2025 editions. The rep recommends a route that fits how much risk you want to carry, how complete the design is, and how much time your own people have, since some routes ask far more of the owner than others.

Once the route is set, the rep prepares the tender with the design team, prequalifies bidders, answers questions during the bid period and compares the bids. Comparing them properly takes more than reading the totals. The rep checks what’s included and excluded, which allowances are realistic, and which alternates are worth taking, then gives you a written recommendation. The contract terms get settled before signing, with your lawyer: payment, changes, schedule, insurance, warranties and dispute resolution. The five questions to ask before you sign are a good place to start.

Construction: the monthly rhythm

When the project goes to site, the rep’s work settles into a monthly cycle built around the contractor’s progress claim, the change log and your report.

Progress claims and prompt payment

Ontario’s Construction Act sets the payment clock. Proper invoices are given monthly unless the contract says otherwise, and a contract can’t make giving one conditional on a payment certifier signing off first (section 6.3). Once a proper invoice arrives, the owner has 28 days to pay it, unless the owner gives a notice of non-payment within 14 days for any amount in dispute (section 6.4).

That 14-day window is where the rep’s review sits. The design consultant usually certifies payment under the contract; the rep reviews the same claim alongside, checks it against the schedule of values and the work actually in place on site, flags anything that doesn’t line up, and gives you a recommendation in time for a notice if one is needed. Most months the recommendation is simply to pay, with the reasons noted.

Holdback

The Act requires the owner to hold back 10 per cent of the value of the work supplied under each contract (section 22). At the end of the job, once the certificate of substantial performance is published, liens expire after 60 days unless they’ve been preserved (section 31), and the holdback can be released.

Since January 1, 2026, holdback also has to be released every year on contracts that run past their anniversary. After each anniversary of the contract date, the owner publishes a notice of annual release within 14 days, then pays the accrued holdback 60 to 74 days after that notice, unless a lien has been preserved (section 26). Contracts signed before 2026 follow transition rules in section 87.4, which your lawyer can apply to your dates. The rep puts every anniversary and notice date in the schedule and in the cash flow, so the release is planned rather than discovered.

Changes

Changes happen on every project, and most have an ordinary cause: a design detail that needed developing, an existing condition nobody could see, a decision the owner made late. When a change request comes in, the rep works out what caused it, whether it’s a change under the contract, whether the price follows the contract’s rates and markups and is in line with what similar work costs, and what it does to the schedule. You get a recommendation and the reasons for it, and the change log stays current so the forecast final cost is always up to date. Our article on where change orders come from goes further into the causes.

Schedule and the monthly report

The rep tracks the contractor’s schedule against the master schedule and raises any slippage early, while there’s still time to recover it. Every month you get one report covering cost against budget, the forecast final cost, the change log, schedule status, the main risks and the decisions you need to make, with dates. If the news isn’t good, the report says so plainly, with what we’d do about it.

One thing the rep doesn’t do is run the site. On most projects the general contractor or construction manager is the constructor, responsible for safety, means and methods and the trades.

Closeout: finishing properly

The last few per cent of a project take more attention than their size suggests. At closeout, the rep:

• Tracks the deficiency list with the consultant and the contractor until every item is closed.
• Follows commissioning of the building systems, and the training your operations staff need.
• Collects the turnover package: as-built drawings, operating and maintenance manuals, warranties and the spare parts the specifications call for.
• Plans the final inspection. The City of Toronto says property owners must schedule a final inspection when the project is complete to close the permit, and notes that open permits can complicate later real estate transactions and permit applications.
• Times the holdback release and final payment to the Act and the contract.

On residential projects, Tarion coverage is part of closeout. Tarion describes coverage for freehold, contract and condo homes after possession in three periods of one, two and seven years. The rep makes sure the paperwork is in order and the warranty dates are recorded.

What an owner’s rep does on a typical week

During construction, a typical week on a mid-sized project looks something like this. The hours change with the phase and the project, and it’s lighter in design and heavier around tender and closeout.

1. Catch up on the week before. Read the contractor’s site reports, the consultant’s field reviews and the open requests for information, and update the decision log.
2. Site meeting. Chair or attend the weekly meeting with the contractor and the design team, follow up on actions and confirm the minutes say what was agreed.
3. Site walk. See the progress against the schedule, look at the work in place that the next claim will cover, and note anything for the consultant to review.
4. Progress claim, when one is in. Review it within the 14-day window, reconcile it with what was seen on site and send you a recommendation.
5. A change request. Work through the cause, the price and the schedule effect, and either recommend it, ask the contractor for more backup, or bring options to you.
6. Questions for the owner. Gather the decisions the design team or the site needs from you, with dates, and set up a short call to make them.
7. The report. Once a month, the full report; in between, a short note on anything that moved.

Having one experienced person do all of this every week means nothing waits until someone on your team finds the time.

Owner’s rep vs project manager vs construction manager

These titles overlap, and the overlap causes most of the confusion about the role.

An owner-side project manager and an owner’s representative are often the same role under two names. A construction manager is a different role: it delivers the building, and on many projects you’ll have both a CM and a rep, working together. The full comparison, including how each is paid and who does what at every stage, is in owner’s rep or construction manager: which one do you need?

Who hires an owner’s representative

The owners who get the most from a rep have three things in common: they build rarely, the project matters to their organization, and nobody inside has the time or the background to give it senior construction attention every week. In practice that includes:

• Tenants on office, retail and industrial fit-outs. A fit-out is often a large capital spend for the business, done to a lease deadline. Our guides to how tenant improvement allowances work in Ontario and planning an office renovation in Toronto cover the construction side of both.
• Landlords and property owners running base building upgrades or a series of tenant turnovers alongside their day-to-day operations.
• Developers without an in-house construction team, or whose team is stretched across too many projects.
• Institutions and non-profits such as schools, community organizations and faith groups, often governed by a board of volunteers who need clear reporting to make decisions.
• Businesses building their own facility, where the people in charge are experts in their own operation and new to construction.

Our own experience was built at PCL Constructors and Oxford Properties, over more than 20 years and more than $3B of delivered projects across office, residential, retail and industrial work. That spread is useful because the decisions on a fit-out, a base building and a new facility are closer to each other than they look.

What the role isn’t

A few common mix-ups, cleared up.

Not a construction manager. A construction manager delivers the building: it manages the trades, runs the site and is responsible for the construction schedule. The owner’s rep manages the project as a whole on your side, including the CM’s contract, and works alongside the CM rather than duplicating its work.

Not a lender’s monitor. Lenders often appoint a cost consultant to report to them on each draw and on progress. That monitor works for the lender, reviews and reports, and doesn’t take part in the project’s decisions. An owner’s rep works for you and is involved in the decisions as they’re made. On a financed project the two talk regularly, and good information from the rep makes each draw go more smoothly. We walk through each step of a draw in how construction financing works in Ontario.

Not a replacement for your architect. The design team designs, reviews the work for general conformance and usually certifies payment. The rep makes sure the design lands on budget and on schedule, and that the decisions it needs from you are made in time.

Not your lawyer. The rep works through contract terms with you and knows which ones matter in practice, but the legal advice comes from your lawyer.

What it costs, and whether your project needs one

Owner’s rep fees are usually hourly, a fixed fee for defined work, or a monthly retainer through construction. The fee depends on the hours the project needs, which phases you want covered and how involved you want us to be. It tends to be a larger share of a small project’s budget than a large one’s, because some of the work doesn’t shrink with the budget. We’ve set out how fees are built, with worked examples, in what an owner’s representative costs in Ontario.

Whether you need one comes down to three questions:

1. Would the project going badly do real harm to your business or organization?
2. Does anyone inside have the time and the construction background to give it senior attention every week?
3. Have you built at this scale, in this market, recently?

If the project matters, nobody inside can own it properly and it’s outside your recent experience, a rep is likely worth the fee. If you have an experienced construction lead with time to spare, you may only need help with one phase, such as the budget or the tender.

Frequently asked questions

What are the responsibilities of an owner’s representative?

An owner’s representative manages the project on the owner’s behalf: setting the budget and schedule, hiring and managing the design team, recommending the delivery model and running procurement, settling the contract with the owner’s lawyer, reviewing progress claims and change requests, tracking schedule and risk, reporting monthly, and closing the project out with deficiencies, turnover documents and holdback release handled. The owner keeps every decision; the rep prepares each one.

Is an owner’s representative the same as a project manager?

Often, on the owner’s side. Many owners use “project manager” for the same role, and the work is much the same. The confusion comes from contractors and consultants, who also have project managers responsible for their own scope. An owner’s rep works only for the owner and covers the whole project, from budget to closeout, without holding any construction or design contract.

When should an owner’s rep join the project?

As early as you can, ideally at feasibility, before the budget and the design are set. Decisions made early are the cheapest to change, and the rep has the most influence on the outcome then. Joining during design or at tender still helps. Joining once construction has started is common too; the work then concentrates on payments, changes, schedule and closeout.

Does an owner’s rep replace anyone on my team?

No. The design team, the contractor and your internal people all stay. The rep fills a role that’s usually empty: senior construction experience working only for you, every week. On smaller organizations, the rep often takes work off a facilities manager or operations lead who has been managing the project on top of their own job.

Is an owner’s rep worth it on a smaller project?

Often, scaled to suit. A smaller project has the same kinds of decisions as a large one, with fewer people around to make them. The engagement can be light: a budget review, help with the tender, and a few days a month through construction. The cost article linked above shows how fees change with project size.

Talking it through

If you’re planning a project and want to know how an owner’s rep would work on it, our page on owner’s representation in Toronto and Ontario sets out how we work and how to reach us. We’ll give you a straight answer on whether the project needs representation, and how light or full the engagement should be.