Permit Library › Municipal: City of Toronto › Toronto Building › Building permits
Plumbing & Drain Permit
Plumbing in new buildings and additions, and drains below the foundation within the building.
You need it when: Plumbing in new buildings/additions, or drains below the foundation.
Why it's needed
- Required for proposed plumbing work. A road cut permit is also needed to extend piping into the right-of-way.
When to apply
- Reviewed with the main building permit application.
Review time
Plan for about 30 business days.
Documents for a complete application
- Plumbing & drainage drawings
- Fixture/drainage calculations
- Backflow prevention details
- Toronto Building application checklist for the permit type (ask for the latest version at pre-application)
Submission checklists
How to submit
- Electronic submission to Toronto Building.
Often needed first
Forms and guides
- Application for a Permit to Construct or Demolish (City of Toronto, application form)
- Schedule 1: Designer Information (City of Toronto, application form)
- Plumbing Data Sheet (City of Toronto, application form)
Official pages
Track Plumbing & Drain Permit free.
Track this permit freeDeadlines in business days, email alerts before decisions are due, and your whole team in one place.
Sources are marked in the text: [TO] toronto.ca pages, [Guide] general industry guidance, [Plan] permit planning practice. Confirm on the official page before applying.