Plumbing permits by city | BuildRules

The rule changes by municipality

Start with the city where the property is located.

Brampton, OntarioYes. Brampton has a residential permit package for new plumbing fixtures and finishing roughed-in plumbing.

The permit package requires a plan showing the existing layout and proposed new fixture locations.

Open Brampton rules

Hamilton, OntarioHamilton requires a building permit for plumbing work inside buildings, and plumbing/drainage systems are reviewed under the Building Code.

The City also publishes stand-alone plumbing-device fees for items such as backwater valves and backflow preventers.

Open Hamilton rules

Mississauga, OntarioAdding, removing or relocating plumbing fixtures and installing, replacing or repairing plumbing drainage require a permit; same-location fixture replacement is listed as permit-exempt.

Mississauga distinguishes simple fixture replacement from changes to the plumbing system. Drainage, sewer and backwater-valve work can also trigger permit requirements.

Open Mississauga rules

Ottawa, OntarioOttawa lists alterations, additions and extensions to a plumbing system as permit-required work, except replacement of existing fixtures.

For plumbing-only work, Ottawa’s Building By-law publishes a flat application fee. Plumbing work is also inspected at underground, rough-in and final stages where applicable.

Open Ottawa rules

Toronto, OntarioNew 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.

Open Toronto rules

Vaughan, OntarioVaughan requires a building permit for additions or alterations to plumbing fixtures, water services and sewer services.

Like-for-like replacement of existing plumbing fixtures is separately listed as permit-exempt.

Open Vaughan rules

Why BuildRules separates cities

Ontario sets the Building Code. Municipal rules, zoning, processes and project guidance still differ.

We publish a city only after attaching municipal sources to the project answer. Missing coverage stays missing instead of borrowing another city’s rule.