Bathroom renovations in Ontario must meet the Ontario Building Code (OBC), Ontario Electrical Code (ESA), and CSA plumbing standards. Most full renovations require permits. Here's what every KW homeowner needs to know.
Plumbing Code
- Anti-scald valves required on all new shower installations.
- Drain vent connections within 6′ of fixture.
- Proper trap and vent system maintained.
- Code-approved supply line materials (PEX, copper).
- Permits for plumbing relocation.
Electrical Code
- GFCI on all outlets within 3′ of sink.
- Tamper-resistant outlets.
- Lighting circuit capacity for fixture wattage.
- Proper grounding and bonding.
- ESA permit for new circuits.
Ventilation Code
Mechanical exhaust fan vented to exterior required for all bathrooms with showers/tubs in new installs. Minimum 50 CFM (cosmetic refresh) or 80 CFM (full bath) per OBC.
When Permits Required
YES: layout changes, plumbing relocation, new electrical circuits, ducted ventilation changes, structural work. NO: cosmetic refreshes (vanity swap, paint, fixture swap, like-for-like).
Frequently Asked Questions
Do I need a permit for a bathroom renovation in Kitchener?
Yes for most full renovations involving plumbing relocation, electrical changes, or ducted ventilation. Cosmetic refreshes don't require permits.
What does Ontario Code require for bathroom outlets?
GFCI protection on all outlets within 3′ of sink. Tamper-resistant outlets. Proper grounding.
Are anti-scald valves required in Ontario showers?
Yes for all new shower installations. Pressure-balance or thermostatic anti-scald valves required by Ontario Building Code.
How long does a bathroom renovation permit take in KW?
Plumbing-only: 1–2 weeks. Combined building + electrical + mechanical: 2–4 weeks.
Does D&D handle permit applications?
Yes — we handle all applications with City of Kitchener Building Division (or municipal equivalent). Permit fees pass through; admin included.
Key Takeaways
- Layout changes, plumbing/electrical relocation: PERMIT required.
- Cosmetic refreshes (vanity, fixture, paint): NO permit.
- GFCI on all outlets within 3′ of sink.
- Anti-scald valves required on all new shower installations.
- Mechanical exhaust fan vented to exterior required (50–80+ CFM).
- Permit timeline: 1–4 weeks — apply week of contract.
- D&D handles permit applications on your behalf.
Devon has personally overseen 500+ interior renovations across Kitchener, Waterloo, Cambridge, and Guelph since 2023. Read full bio →