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Toronto plumbing permits

Do you need a plumbing permit in Toronto?

Check when Toronto plumbing and drain work needs a permit, what is exempt, required drawings, forms, fees and official City sources.

2 min readReviewed Oct 1, 2026
The short answerConditional

New or modified plumbing systems can require a permit. Simple repair or replacement of existing plumbing fixtures is listed as permit-exempt.

Toronto has a stand-alone plumbing and drain permit route for work not tied to another construction project. The exact permit question depends on whether you are altering the plumbing system or simply replacing fixtures.

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Check the actual address

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Pair this guide with mapped zoning, visible sources and the checks your design still needs.

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Know what matters

What changes the answer.

Start with these conditions. The official reference is attached to each one.

New / modified plumbingPermit can be requiredConditional

Toronto lists installing or modifying plumbing systems as permit-required work.

Official sourceCity of TorontoWhen Do I Need a Building Permit? · Permit-required and permit-exempt project examples
Verified2026-10-01Open proof
Fixture replacementGenerally permit-exemptLikely allowed

Toronto lists repairing and replacing plumbing fixtures among work that does not require a building permit.

Official sourceCity of TorontoWhen Do I Need a Building Permit? · Permit-required and permit-exempt project examples
Verified2026-10-01Open proof
Stand-alone workDedicated permit routeInfo

Work not related to other proposed construction can use the stand-alone plumbing and drain permit process.

Official sourceCity of TorontoStand-alone Plumbing & Drain Permits · Stand-alone plumbing/drain permit, drawings, forms and 2026 fees
Verified2026-10-01Open proof

Your preparation checklist

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Preparation checklist · Reviewed 2026-10-01

Fees and timing

TimelineStand-alone plumbing and drain permits can use Toronto's online submission system. Timing depends on completeness and scope.
FeesToronto's 2026 schedule charges by fixture, piping or work type. For a single-family dwelling, the City lists $23.20 per plumbing fixture/equipment item.

Next steps

  1. List every fixture and pipe being added, moved or removed
  2. Separate simple replacement from system alteration
  3. Prepare the plumbing data sheet
  4. Confirm whether the work is stand-alone or tied to another building permit

A few questions you might have.

Do I need a permit to replace a toilet or faucet?

Toronto lists repairing and replacing plumbing fixtures as work that does not require a building permit.

What if I move plumbing to a new location?

Moving or modifying the plumbing system is a different scope and can require a plumbing permit.

Better decisions, together

Get everyone on the same page.

Send this to your designer or contractor before agreeing on the scope.

Keep exploring

Your next useful question.

A connected project guide or a practical next step, picked for this topic.

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Application planning

How do you prepare a Toronto building permit application?

Define the actual work, check the applicable rules, choose the City guide for that scope and prepare its drawings, forms and fees. The submission route is stated in the project-specific guide.

4 min read
Costs & budgeting

What will your Toronto building permit cost?

The fee depends on the work category. In Toronto’s 2026 schedule, a residential deck permit is $214.79; selected area- and length-based categories use a rate and minimum. Use the calculator for one category, then build the rest of your project budget separately.

4 min read