Why it matters here
The Ontario Building Code applies to plumbing in every home, and the City of Oshawa issues permits and inspects work. Unpermitted work can cause problems with insurance claims, home sales and safety. Some common renovation jobs need a permit; some simple repairs do not. When in doubt, ask the city's building department.
Step by step
- Identify the type of work. Swapping a faucet or toilet without moving it usually does not require a permit. Adding new fixtures, moving drains, installing a backwater valve or changing the building drain generally does.
- Check the city's current rules. The City of Oshawa building department lists what needs a permit.
- Prepare drawings. For larger jobs, a simple floor plan showing fixtures and drains is often needed.
- Apply. Permits can usually be applied for online or at the city.
- Book inspections. Inspections usually happen before walls are closed and at the end.
- Keep the records. Store permit and inspection documents with your house papers.
A basement secondary suite has its own requirements beyond plumbing, including fire separation and egress. Check with the city early.
Mistakes to avoid
- Closing walls before the inspection.
- Assuming a contractor pulled the permit; ask to see it.
- Skipping a permit to save time, then facing problems on sale.
- Not checking gas work requirements, which fall under TSSA.
When to call a plumber
Call when planning a renovation, a basement bathroom, a backwater valve or a new sewer line. We can tell you whether your job likely needs a permit and work with you on it. Replacements like toilet installation often do not need one; new gas line installation has its own rules. If your pipes are noisy after a renovation, read why pipes bang, hum and whistle.