Hiring a contractor in Ottawa — and what to do when it is an emergency
Every homeowner eventually hires someone in a hurry, at the worst moment, from the first name that answers. Ontario gives you a specific protection for exactly that: a contract signed in your home can be cancelled within 10 days, for any reason. How to choose a contractor when you have time — the contractor deposit, the insurance, the building permit for renovation work — and what changes in an emergency repair.
By Ottawa Property Guide EditorialPublished August 1, 2026 Last verified August 1, 2026
Choosing a contractor calmly, with three quotes and references, is a solved problem that everybody already knows how to do. The reason it goes wrong is that most hiring does not happen calmly. It happens with water on the basement floor, or no heat in January, or a roof leaking into a bedroom — and whoever answers the phone gets the job.
So this guide is in two halves: what to establish when you have time, and what changes when you do not.
The consumer right most Ontario homeowners do not know they have
This one is specifically designed for the situation above, and it is worth knowing before you need it.
You always have a cooling-off period when you sign a contract in your home. You can cancel the contract for any reason within 10 days of receiving a written copy of the agreement.
Government of Ontario, on your rights when signing or cancelling a contract
Ten days, for any reason, no explanation required. You cancel in writing to the business, and for most contracts the company then has 15 days to return your money.
Three things follow. If somebody has come to your door and you have signed something you now regret, you may not be stuck. If you are being pressed to sign immediately because the price is only good today, that pressure is worth exactly nothing against a ten-day cancellation right. And get a written copy of the agreement, because the clock starts when you receive it.
How to choose a contractor: what to establish before work starts
A written contract, with the scope, the price, the payment schedule and the start and finish dates. Verbal agreements are where disputes come from, and "we will sort out the details" means you will be sorting them out from a weaker position.
Proof of insurance, specifically liability — and whether their workers are covered. If someone is hurt on your property uninsured, that is your problem in a way most homeowners have not considered.
Whether a building permit for renovation work is required, and who is pulling it. This is not a formality: unpermitted work is a genuine liability when you sell, as selling a home with defects or unpermitted work sets out.
A realistic contractor deposit, not most of the money up front. A contractor asking for the majority before starting is asking you to finance them.
References from work like yours, and ideally an address you can look at.
Who is actually doing the work — the person quoting, an employee, or a subcontractor you have never met.
What happens if they find something worse once the wall is open. Agree how change orders are priced before you need one.
The lien risk nobody mentions
One piece of Ontario construction law is worth knowing as a homeowner: people who supply work or materials to your property can register a claim against it if they are not paid — and that includes subcontractors and suppliers you never hired directly and may never have met.
The practical consequence: paying your contractor in full does not guarantee that the people they owe have been paid, and an unpaid subcontractor's claim attaches to your home rather than to the contractor's business. For anything beyond a small job, ask about this specifically and take advice on how the payments are handled. It is also exactly the sort of thing that surfaces later during a sale, on the title search described in title insurance and what your lawyer does.
When it is a genuine emergency
Water coming in, no heat in winter, a gas smell, sparking or a compromised roof are not situations for a procurement process. The order changes.
Stop the damage first. Water shut-off, breaker, gas valve — know where all three are before you need them, which is the single most useful sentence in this guide.
Call your insurer early, not after the repair. Many policies require notification and some direct you to preferred contractors; paying first and claiming later can reduce what you recover. Insuring a house with problems covers the wider picture.
Photograph everything before anything is cleaned up or removed. This is free, takes two minutes, and is the evidence for both the claim and any dispute.
Separate stabilising from repairing. Authorise the work that stops the damage now, and leave the rebuild as a separate decision you make properly in a week.
Get it in writing even now — a scope and a price, even brief. The ten-day cancellation right above exists precisely for what you sign in this state.
Do not pay in cash for the promise of a discount. No receipt, no warranty, no recourse, and no evidence for an insurer.
The step almost everyone skips is the first one, and it costs the most. Find your water shut-off, your electrical panel and your gas valve this week, and make sure everyone in the house knows where they are. Ten minutes now, against the twenty minutes of damage while somebody searches.
Afterwards
Keep the invoices, the permits and the photographs. They do three jobs: they support an insurance claim, they prove the work was done properly if it is ever questioned, and they turn a disclosed problem into a solved one when you come to sell.
That last one is worth more than sellers expect. A basement that flooded once and has a permit, an invoice and a rebate approval behind it is a stronger story than a basement nobody has ever mentioned — because an experienced buyer will look at the walls regardless. The same argument, from the other end, is in basement water, flooding and sewer backup.
There is no official price list for renovation work, which is why every number you find online disagrees with the last one. This is what a kitchen renovation, a bathroom renovation, a basement renovation, a roof and an electrical panel upgrade typically cost in Ottawa, what each range assumes, and which renovations actually return their money when you sell. The honest headline: the only real number is three written quotes.
The federal grant most people still ask about is closed. What replaced it is income-tested. But the provincial rebates on a heat pump, insulation and windows are substantial and open to everyone, and the City of Ottawa lends against energy efficiency work at a fixed rate over twenty years, repaid through your property tax bill. The trap is sequencing: several of these have to be applied for before the work is done, not after.
No lender funds a purchase without insurance in place, so an insurer's opinion of the house is a closing condition whether you treated it as one or not. Insurance for an older home turns on knob and tube, an oil tank, a flooded basement and a previous owner's claims — and if you cannot get home insurance on that address, the deal does not close. What a home insurance refusal really means, and when to find out.
Three different problems get called a wet basement, they have different causes, different fixes and different insurance, and telling them apart is most of the work. What to look for at a viewing, and the City of Ottawa rebates that pay a large share of the fix — up to $3,000 for a sump pump and $2,500 for an outdoor storm backwater valve.
Ontario is a buyer-beware province, with one large exception that decides most disputes. A seller need not disclose a patent defect a buyer could see, but must disclose a known latent defect that makes the home dangerous or unfit — and concealing anything removes the protection entirely. Where unpermitted work sits, and how to sell a house honestly.
Ottawa winters don't forgive procrastination. A few weekends of fall work — furnace, gutters, grading, faucets, weatherstripping, and a snow plan — is the cheapest insurance a homeowner here can buy. Here's the full checklist, in the order the season demands it. Seasonal maintenance in the order it matters — and how to winterize before the freeze does it for you.
July 22, 2026
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