Quick Answer: If you're replacing fixtures in the same location (new toilet, new vanity, new shower head), you don't need a permit. If you're moving plumbing, adding a new bathroom, or changing the layout, you do. Plumbing fixtures cost $23.20 each to permit, and bathroom permits qualify for Express Services (3-business-day review).
When You Need a Bathroom Permit
According to the City of Toronto, a permit is required when:
- Adding new plumbing fixtures (putting a bathroom where there wasn't one)
- Moving existing fixtures to new locations (relocating the toilet, moving the shower)
- Moving or removing walls (changing bathroom layout)
- Adding exhaust ventilation through an exterior wall (HVAC permit)
When You DON'T Need a Permit
These are permit-free:
- Replacing a toilet in the same location
- Swapping a vanity/sink in the same spot
- Replacing a bathtub or shower in the same footprint
- Retiling walls and floors
- Painting, new fixtures (faucets, showerheads), new lighting (lighting may need an ESA electrical permit)
- Replacing a medicine cabinet or mirror
The rule of thumb: Same location, same configuration = no permit. New location or new bathroom = permit.
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Bathroom Permit Fees (2026)
| Work Type | 2026 Fee |
|---|---|
| Plumbing fixtures (single-family dwelling) | $23.20 each |
| Interior alterations (if structural work) | $11.53/m² |
| Water services / buried piping | $214.79 flat |
| Backwater valve | $38.67 each |
| HVAC (adding exhaust ventilation) | $214.79 flat |
| Minimum permit fee | $214.79 |
Example Cost Estimates
Moving a toilet and adding a new shower (no structural work):
- Plumbing fixtures (toilet + shower + sink): 3 × $23.20 = $69.60
- Piping: $214.79
- Total: ~$285
Adding a brand-new bathroom (with wall modifications):
- Interior alterations (6 m²): 6 × $11.53 = $69.18
- Plumbing fixtures (toilet, sink, shower): 3 × $23.20 = $69.60
- Piping: $214.79
- HVAC (exhaust fan): $214.79
- Total: ~$570
Permit fees are a rounding error on a bathroom renovation that typically costs $15,000–$50,000.
Source: City of Toronto 2026 Fee Schedule
How Long Does a Bathroom Permit Take?
Bathroom renovation permits go through Express Services:
| Stream | Review Time |
|---|---|
| Express Services | 3 business days |
| Real-world total | 2–4 weeks |
Stand-alone plumbing permits (no structural work) are particularly fast through Express.
How to Apply for a Bathroom Permit
Step 1: Determine What's Changing
Map out exactly what's moving:
- Are fixtures staying in the same locations? (No permit for that)
- Are you moving drain locations? (Permit required)
- Are you removing or adding walls? (Permit + possible engineering required)
- Are you adding a new bathroom where none existed? (Full permit package)
Step 2: Prepare Drawings
For a bathroom permit, you'll need:
- Existing floor plan showing current fixture and drain locations
- Proposed floor plan with new layout and dimensions
- Plumbing diagram showing drain connections and venting
- Structural details if walls are being modified (engineer-stamped if load-bearing)
Step 3: Submit Application
Submit through Express Services — online portal or email to bldapplications@toronto.ca. Include:
- Application to Construct or Demolish (updated February 16, 2026 form)
- Drawings as PDFs
- Owner's Authorization form if using an agent
Step 4: Inspections
Key inspection stages:
- Plumbing rough-in — before walls are closed (this is the critical one)
- Framing — if walls were modified
- Final inspection — after everything is complete
Critical: Do not tile or close walls until the plumbing rough-in passes inspection. This is the most common — and most expensive — mistake.
Let PermitEasy handle your bathroom permit
Common Mistakes to Avoid
1. Moving a toilet drain without a permit. Even shifting a toilet a few feet means rerouting the drain line, which requires a permit and inspection. The drain slope and venting must meet code.
2. Adding a bathroom without considering existing plumbing. New bathrooms need to connect to existing drain stacks. The farther from the stack, the more complex (and expensive) the plumbing. Plan this before you commit to a location.
3. Forgetting HVAC for the exhaust fan. If your new or renovated bathroom vents through an exterior wall and you're installing new ductwork, that may require an HVAC permit ($214.79).
4. Not getting an ESA permit for electrical. New lighting circuits, heated floors, GFCI outlets — all of these require permits from the Electrical Safety Authority, which is separate from the City building permit.
5. Tiling over uninspected rough-in plumbing. Once the tile is up, the inspector can't see the pipes. You'll be asked to tear out your brand-new tile so they can inspect. Schedule the rough-in inspection before any finishing.
6. Ignoring waterproofing. Not a permit issue per se, but a code issue. Shower and tub surrounds need proper waterproofing membranes. Inspectors will check for this.
Converting a Half-Bath to a Full Bath
This is one of the most popular bathroom projects — adding a shower or tub to an existing powder room. Here's what you need:
- Plumbing permit for the new shower/tub fixture and drain
- Possibly structural work if you're expanding the room
- Waterproofing details for the wet area
- Ventilation — a full bathroom needs adequate ventilation (exhaust fan)
The plumbing is the main permit trigger. If you can tie into the existing drain stack nearby, it's relatively straightforward.
FAQ
Do I need a permit to replace a bathtub in Toronto?
No — if the new tub goes in the same location with the same drain connection. Yes — if you're moving the drain, converting a tub to a walk-in shower in a different location, or making structural changes.
Do I need a permit to retile my bathroom?
No. Tiling is cosmetic work and doesn't require a building permit. However, if you're opening walls and discovering plumbing or structural issues, those repairs may require permits.
How much does a bathroom permit cost in Toronto?
Typically $215–$570 depending on scope. A simple plumbing permit for moving fixtures starts at the $214.79 minimum. Adding a new bathroom with structural and HVAC work runs higher.
Do I need a permit for a basement bathroom?
Yes — adding a bathroom where none existed always requires a plumbing permit. If it's part of a larger basement renovation, additional permits may apply.
Can a contractor pull a bathroom permit for me?
Yes. Toronto allows authorized agents to submit permits on behalf of property owners using an Owner's Authorization form. Your contractor — or PermitEasy — can handle the entire process.
Ready to Renovate Your Bathroom?
Check if you need a permit with our free tool, or let PermitEasy handle your application from start to finish.
Related guides: Kitchen Renovation Permits · Basement Renovation Permits · Plumbing Permits
All fees current as of January 1, 2026. Source: City of Toronto — When Do I Need a Permit? and Building Permit Fees.