Scope before arithmetic
Make sure the fee belongs to your project.
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.
Ottawa lists alterations, additions or extensions to a plumbing system as permit-required work.
Ottawa’s project list excludes replacing existing fixtures from the plumbing permit trigger.
Ottawa publishes plumbing underground, plumbing rough-in and plumbing final as inspection stages.
Official sources behind this page
Ottawa lists alterations, additions or extensions to a plumbing system as permit-required work.
Ottawa’s project list excludes replacing existing fixtures from the plumbing permit trigger.
Ottawa publishes plumbing underground, plumbing rough-in and plumbing final as inspection stages.
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the plumbing guide