How to Verify a Renovation Contractor in Ontario

Verification comes down to five documents, and a legitimate contractor can produce all of them within a day of being asked:

• A municipal licence where the city requires one — in Toronto, that's the Building Renovator licence from Municipal Licensing & Standards
• A WSIB clearance certificate, proving workers are covered if someone is injured on your property
• A certificate of insurance showing commercial general liability coverage — $2 million minimum
• A written contract with a defined scope, payment schedule and warranty terms
• A permit history — recent projects where they, not the homeowner, pulled the building permit

None of this is paperwork for its own sake. Each document transfers a specific risk off your shoulders: the licence gives you a regulator to complain to, WSIB keeps an injured worker's claim off your homeowner's policy, liability insurance covers damage to your property, the contract makes the scope enforceable, and the permit history proves the work gets inspected. Ontario doesn't license renovators provincially the way it licenses electricians — so these five checks are the system. Our guide to choosing a renovation contractor covers the softer signals; this post covers the hard ones.

If your project is in Toronto, start here. The City requires renovation contractors to hold a Building Renovator licence through Municipal Licensing & Standards — a genuinely checkable credential, not a marketing badge. Ask for the licence number and verify it with the City before signing anything.

The rest of the GTA works differently. Vaughan, Mississauga, Hamilton and most other municipalities handle trade and business licensing their own way, and there's no single province-wide contractor licence for renovation work. That makes Toronto's requirement useful even for jobs outside Toronto: a contractor who carries it has already passed a screening process somewhere.

Two related checks matter on every project regardless of city. Electrical work may only be done by a Licensed Electrical Contractor — or by you personally, in your own home — and the contractor files an ESA notification for it. Gas work needs a TSSA-licensed fitter. Ask who is doing yours and how the notifications get filed. A general contractor who shrugs at either question is telling you how the rest of the job will go.

WSIB clearance is the check homeowners skip most and regret hardest. If an uninsured worker is injured on your property, the claim can end up your problem. Every registered contractor can generate a clearance certificate through WSIB's online system, and you can verify its status yourself with the certificate number — it takes minutes, costs nothing, and the valid dates are printed on it.

For liability insurance, ask for a certificate of insurance naming the insurer, policy number and coverage limit — then call the broker to confirm the policy is active. $2 million in commercial general liability is the working minimum for residential renovation; condo boards routinely demand $2 million to $5 million with the condo corporation named as additional insured before approving any work. A contractor who quotes condo jobs already carries it.

Both documents expire, and both get faked occasionally. Verify at the source — WSIB's portal, the insurance broker — rather than accepting a PDF at face value. Leo Constra is licensed, insured and WSIB covered, and we hand these documents over with every quote because we'd rather compete against contractors who can't.

Homeowners sometimes ask why a renovator isn't "HCRA licensed." Short answer: renovations don't need it. Since February 2021, the Home Construction Regulatory Authority licenses businesses that build or sell new homes, and Tarion administers the statutory new-home warranty — one year on workmanship and materials, two years on water penetration and electrical, plumbing and HVAC systems, seven years on major structural defects.

Renovations, additions and upgrades to an existing, previously occupied home generally fall outside both regimes. Your protection on a renovation comes from the contract, the contractor's insurance, WSIB coverage and Ontario's construction lien holdback — not from Tarion.

The line matters when a project stops being a renovation. Custom homes built under contract on your land, full rebuilds, and substantial projects that effectively create a new dwelling do trigger HCRA licensing and Tarion enrollment. Garden suites sit in a grey zone that depends on the circumstances — check directly with HCRA before assuming either way. For any new-build scope, look the builder up in the HCRA's Ontario Builder Directory before signing.

Documents verify the contractor; contract structure protects the project. Three mechanics do most of the work.

First, a real scope document — drawings, specifications, allowances, exclusions, and a payment schedule tied to completed milestones rather than calendar dates. Our answer on what a renovation contract should include lists every clause worth insisting on.

Second, a sane deposit. Ontario has no fixed legal cap, but the market norm for renovation work is a modest deposit with the balance staged against progress — see what a normal deposit and payment schedule looks like. A contractor who needs half the contract value before mobilizing is financing the last job with your money.

Third, the holdback. Ontario's Construction Act provides for holding back 10% of each payment until the lien period expires, which protects you if a subcontractor goes unpaid and registers a lien against your property. Legitimate contractors build the holdback into their cash flow and expect it; the ones who bristle at it are the reason it exists.

Some findings aren't yellow flags to weigh — they're exits:

• A cash price "to skip the HST" — it also skips the contract, the insurance and your leverage
• Refusal to pull permits, or asking you to apply as "owner" while they work unlicensed
• No verifiable business address, or a licence number that doesn't check out
• A WSIB or insurance certificate they promise to send "after we start"
• Pressure to sign today for a discount that expires tomorrow

Any one of these should end the conversation, because each removes a layer of the protection stack described above. Our answer on contractor red flags goes deeper on warning signs that show up during quoting.

The verification habit costs you about an hour per contractor. Against a home renovation worth tens of thousands of dollars, it's the cheapest insurance you'll ever buy. We've worked across Toronto and the GTA since 2004, back every project with a 2-year workmanship warranty, and you can request a free quote through our contact form — documents included, before you ask.