Tarion covers new houses. Not yours.
Generally, no. Tarion administers the new home warranty in Ontario. If you are renovating a house you already own and occupy, that warranty is not what stands behind the work. Homeowners find this out at the worst possible moment, which is after something has gone wrong.
I hold a builder licence under Ontario's Home Construction Regulatory Authority. That gives me a specific view of this, because I sit on the licensed side of a line most homeowners do not know exists.
Five things actually protect you on a renovation. None of them is a Tarion certificate. Every one of them is something you can check before you sign, in an afternoon, for free.
An HCRA licence and a Tarion warranty are different things
They are two different bodies doing two different jobs. The HCRA licenses the people. Tarion administers the warranty on new homes. One vets who is allowed to build. The other backs the finished product.
The HCRA reviews competence, conduct, and financial standing before it issues a licence, and it can discipline or revoke. The licence is a statement about the builder. Tarion warranty coverage is a statement about a new home.
Renovation work to an existing occupied house generally falls outside new home warranty coverage. Very large projects can get complicated. Certain rebuilds and certain arrangements can cross into new home territory depending on what remains of the original structure and how the deal is structured. If your project is that scale, confirm your status directly with the HCRA and Tarion before construction starts, not after.
Here is the part worth sitting with. Most renovation work in Ontario does not require an HCRA licence at all. Anyone with a truck can quote your kitchen. So the fact that I carry the licence tells you I have been through a vetting process I was not obligated to enter for this kind of work. That is the point of it.
A licence tells you who I am. A contract tells you what I owe you.
Where the confusion comes from
Because the word warranty gets used loosely, and because Tarion is the only construction warranty most Ontario homeowners have ever heard of. They bought a new build once, got a warranty package, and reasonably assumed the same safety net stretches over the addition on the back of their current house.
It does not stretch. There is no provincial backstop waiting to finish your renovation if your contractor walks off. What stands between you and that outcome is the paperwork you insisted on before the first wall came down.
That is not a scary story. It is just the actual arrangement, and it is entirely manageable once you know it.
What actually protects you
Five things, in order of how much they matter.
A written contract with a defined scope. Not an estimate. A contract. It names the work, the exclusions, the products, the price, the payment schedule, and how changes get priced and approved. If a document does not say what is excluded, it is not a contract, it is a hope. Read the exclusions first. That is where the surprises live.
A builder you can verify publicly. Look up the licence. Look up the corporation. Look up how long the business has operated under that name at that address. A contractor who has rebranded three times in five years has left something behind each time.
Insurance and WSIB coverage, in current documents. Ask for a certificate of insurance showing commercial general liability, with your name and address on it, sent directly from the broker. Two million dollars in coverage is a common minimum to ask for on residential work. Ask for a WSIB clearance certificate and verify it with WSIB yourself, because clearance status changes and a printout from March means nothing in September. Then call your own insurer and tell them you are renovating. Policies have conditions about major work and about a house sitting empty, and you want to hear about those from your broker rather than from an adjuster.
A payment schedule tied to completed work. Not to dates on a calendar. Money moves when something is finished and you can see it. Framing complete and inspected. Drywall complete. Cabinets installed. If a contractor wants a large deposit up front and further payments on the first of each month regardless of progress, you are financing them, and you have handed away the only leverage you had.
A written warranty from the contractor. Ask what it covers, how long it runs, what voids it, and how to make a claim. Ours is in the contract, in plain language, with a length attached. Manufacturer warranties on products sit on top of that and are separate. Get both in the file.
The clauses that matter
At minimum, the scope, the exclusions, the price, the payment milestones, the change order process, the site rules, and the warranty. Those seven items resolve almost every dispute I have ever seen between a homeowner and a builder.
Add these and you are ahead of most people:
- Who pulls the permits and who pays for them.
- What the site protection plan is if you are living in the house.
- What hours work happens and where materials get stored.
- Who is the single point of contact on our side, and on yours.
- What happens to the schedule when you change your mind, because you will change your mind.
Change orders deserve a line of their own. Every change gets priced and signed before the work happens. No verbal approvals in a hallway. That rule protects you far more than it protects me, because it means nothing appears on your final invoice that you did not agree to in writing.
Checking a contractor takes ten minutes
Verify the licence with the HCRA if the work requires one. Confirm the legal business name and how long it has existed. Get the insurance certificate directly from the broker. Verify WSIB clearance at the source. Ask for two references on projects of similar scope and actually phone them, and ask what went wrong and how it got handled, because something always goes wrong and the answer is the useful part.
Then read the contract. All of it, including the exclusions.
Bring us the contract you are about to sign with anyone, ours or a competitor's, and we will walk you through what it does and does not cover. Book a consultation with One Group and come with questions.