Primer ยท Permits
When Plumbing Work Needs a Permit
Swapping a faucet? No paperwork. Moving a toilet or adding a bathroom? That is a different story. Here is how to tell the difference before you start.
- Plain steps you can do yourself, safely
- Clear signs for when to stop and call
- Written for Newmarket houses and water
- A plumber on the phone if it goes sideways
What goes wrong in the pipes
Plumbing permits exist so that someone checks the work before it is hidden behind walls or under a floor. In Ontario, the Building Code sets out the rules, and the Town of Newmarket's building department issues permits and conducts inspections within town limits. Neighbouring municipalities such as Aurora, East Gwillimbury and King run their own permit offices.
Unpermitted work can cause trouble beyond the obvious safety concerns. It can complicate insurance claims, slow down a home sale, or force you to open finished walls for a later inspection.
Have these on hand
- Flashlight
- Adjustable wrench
- Towels and a bucket
- Our number on the panel door
Hands-on steps
- Describe the job plainly. Are you replacing a fixture in the same spot, or adding, moving or altering pipes?
- Know the usual rule of thumb. Like-for-like replacement of fixtures such as faucets, toilets or sinks generally does not need a permit. New drains, vents and water supply, relocating fixtures, and adding a bathroom generally do.
- Check with the town. The building department can confirm whether your specific job needs a permit. Rules are updated, so ask rather than assume.
- Submit drawings if required. Larger projects usually need a simple plan showing fixtures, drains and venting.
- Schedule inspections at the right stages. Rough-in inspections happen before walls and floors are closed. A final inspection happens when fixtures are installed.
- Keep the paperwork. Permit records are useful when you sell the house or make an insurance claim.
Mistakes that turn a small repair big
- Closing walls too soon. If the rough-in has not been inspected, the drywall may need to come down.
- Assuming small jobs never need permits. Some modest changes, such as adding a backwater valve, may still require one.
- Forgetting gas work. Gas piping is regulated separately and must be done by certified gas technicians.
- Losing the records. A permit that cannot be found is nearly as unhelpful as no permit at all.
When to put the tools down and call
Call a plumber when your project involves new pipes, moved fixtures, or anything below the floor. We can explain what typically requires a permit and help you plan the work so inspections go smoothly. Simple swaps, such as faucet repair and replacement, usually do not need one. Projects like adding a laundry room often do, so our laundry plumbing work includes checking that question up front.
While you are planning, it is worth keeping a few basics on hand for surprises. Our emergency plumbing kit guide lists what to keep in the house. Whatever the job, the rule is the same: ask before you open the wall, not after.
Asked on site
Does swapping a toilet require a permit?
Replacing a toilet in the same location is usually considered like-for-like work and generally does not require a permit. Moving it or adding a new one usually does.
Who inspects plumbing work in Newmarket?
The Town of Newmarket's building department handles permits and inspections for work within town limits.