Plumber Rates in Ontario (2026)

In Ontario, any plumbing work that involves the drainage system, venting, or supply lines must be performed by a licensed plumber holding a Certificate of Qualification (306A trade). This includes: installing or moving drains, connecting new fixtures to supply lines, water heater installation, and any work requiring a plumbing permit. A handyman can replace a faucet cartridge or toilet flapper — they cannot legally install a new toilet or run new supply lines. (Serving Oakville, Ontario.)

What Requires a Licensed Plumber in Ontario?

In Ontario, any plumbing work that involves the drainage system, venting, or supply lines must be performed by a licensed plumber holding a Certificate of Qualification (306A trade). This includes: installing or moving drains, connecting new fixtures to supply lines, water heater installation, and any work requiring a plumbing permit. A handyman can replace a faucet cartridge or toilet flapper — they cannot legally install a new toilet or run new supply lines. (Serving Oakville, Ontario.)

Plumbers Near Me Ontario 2026 | Oakville

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