How do I check whether a plumber in Ontario is licensed?

Skilled Trades Ontario public register: Plumber (306A) is a compulsory trade in Ontario: the person holds a Certificate of Qualification or is a registered apprentice. Practising without one is illegal. City of Toronto business licence: Toronto licenses this trade at the municipal level; the lookup shows whether the licence is active. Pros We Know checks Toronto listings against this roll.

Is Pros We Know free?

Yes. Search licence-checked pros near you before you sign in, and sign in with an email code only when you save your first pro. Nothing is public and nothing is sold.

Plumbers · Ontario

Plumbers in Ontario

Search Ontario plumbers free, and see which ones the people you know already use.

A burst pipe does not wait for a quote, which is why the plumber most people call is the one a neighbour named.

Pros We Know holds 1,730 plumbing businesses in Ontario, 903 of them checked against the ESA, TSSA and Skilled Trades Ontario rolls and the Toronto and Ottawa business licences. Search them free in the app. When you connect with people you know, their plumbers show up first, with who used them and whether they would rehire.

Is the plumber licensed?

The individual tradesperson, rather than the company

Skilled Trades Ontario public register

Plumber (306A) is a compulsory trade in Ontario: the person holds a Certificate of Qualification or is a registered apprentice. Practising without one is illegal.

Search the public register →

Plumbing contractors in the City of Toronto

City of Toronto business licence

Toronto licenses this trade at the municipal level; the lookup shows whether the licence is active. Pros We Know checks Toronto listings against this roll.

Look up a Toronto licence →

What to check whoever you hire

WSIB clearance. Free to check, no account needed (check it here). Without it, an injury on your property can become your problem.
Liability insurance. Ask for the certificate, not the promise.
A written quote that says what is included, what is extra, and when payment is due.
Someone you know who hired them. That is what Pros We Know is for.

What to ask a plumber before you hire

Are you licensed for this work, and can I see the number?
Is the price for the visit or for the fix, and what happens if the first fix does not hold?
Will you pull the permit if one is needed (a water heater, a new line)?
Who have you done this exact job for nearby?

Where they are

The Ontario plumbing businesses we hold, by city: Toronto (449), Mississauga (84), Markham (36), Ottawa (35), Concord (33), Brampton (32). The app searches by your own postal code or location, so the list you see is the one near you.

Why the pros your people use rank first

Pros We Know is not a review site. There are no star ratings and nothing a business can pay for. When you search, the pros your own contacts have used come first, then the ones people in your network trust, then licence-checked businesses nearby. What you see about a pro is who used them and whether they would rehire, from people you can actually ask.

Plumbers elsewhere: Plumbers in Quebec · Plumbers in British Columbia · Plumbers in Alberta.