Homeowner guideRules and permits
When Plumbing Work Needs a Permit
Certain plumbing jobs require a permit from Markham's building department. Knowing when helps you avoid problems with inspections, insurance and resale.
A young couple sits indoors planning their home renovation with a paint roller.
- Short steps a homeowner can follow safely
- What to check before you pick up the phone
- Clear signs it is time to call a plumber
- Markham and York Region notes where they matter
- Licensing details confirmed when you call
- Residential
- Commercial
- Markham & York Region
The short version
- Adding a new bathroom or kitchen.
- Moving or adding drains, vents or stacks.
- Installing a backwater valve.
- Major renovations involving plumbing changes.
- Replacing a large part of the plumbing system.
- Creating a secondary suite.
Work that usually does not
- Swapping a tap, toilet or basin where the old one stood.
- Repairing a leak.
- Clearing a drain.
- Replacing a water heater like for like (gas work is regulated separately).
These are general guidelines. Always check with the City of Markham Building Standards department for current rules.
Who applies
A homeowner or a contractor can apply for a permit. If we are doing the work, we can help with the application. Inspections are done at key stages, such as before drains are covered.
From the van: Gas piping falls under the TSSA and needs a certified gas fitter, apart from any building permit.
Why permits matter
- Inspections help confirm work is safe and meets code.
- Insurers may ask whether work was permitted.
- Buyers and their lawyers may ask about permits on resale.
- Some subsidy programs require permits.
Nearby municipalities
Richmond Hill, Stouffville and Toronto have their own building departments and rules. Check with the right office for your property.
Keep the paperwork
Once a permit closes, file the inspection record with your house documents. Future buyers, appraisers and insurers may ask for it, and having it ready can smooth a sale. If you bought a home with an unpermitted basement bathroom, the city can advise on bringing it into compliance.