Do I need a separate plumbing permit and electrical permit for a bathroom renovation?

Yes — plumbing permits and electrical permits are separate applications in Ontario, and a bathroom renovation that involves both plumbing and electrical modifications requires both permits independently. They are issued by different authorities, inspected by different inspectors, and follow different code requirements. Understanding this dual-permit system helps you plan your Toronto bathroom renovation timeline and budget accurately.

Plumbing permits in Toronto are issued by the City of Toronto Building Division. You need a plumbing permit any time you are adding new drain connections, modifying the drain/waste/vent (DWV) system, relocating supply lines, adding new fixtures (such as a second sink or a new basement bathroom), or installing a backwater valve. The plumbing permit application requires drawings showing the proposed plumbing layout, pipe sizes, and connections. Fees typically range from $150–$400 for residential bathroom work. The plumbing rough-in inspection must be completed before walls and floors are closed up — the inspector needs to see the pipes, verify proper sizing and slope, and confirm code compliance before anything is concealed.

Electrical permits in Ontario are handled through the Electrical Safety Authority (ESA), which is a separate entity from the city building department. You need an electrical permit for adding GFCI outlets, installing heated floor circuits, wiring new exhaust fans, adding or relocating vanity lighting circuits, and any modifications to existing bathroom wiring. Your licensed electrician typically handles the ESA permit application and schedules the inspection. Fees are generally $100–$300 for standard residential bathroom electrical work. Like the plumbing inspection, the electrical rough-in inspection must happen before drywall or backer board covers the wiring.

How the Two Permits Work Together

In a typical mid-range GTA bathroom renovation, the construction sequence coordinates both permits into a logical workflow. After demolition, your plumber does the rough-in — relocating drains, running new supply lines, positioning the shower valve. Then your electrician does the rough-in — running circuits for GFCI outlets, the exhaust fan, heated floor, and new lighting. Both inspections happen at the rough-in stage, ideally within a few days of each other so the project can move forward to waterproofing, backer board, and tile without unnecessary delays.

Experienced bathroom contractors in the Greater Toronto Area coordinate this sequencing seamlessly. They schedule the plumber first (since plumbing rough-in involves larger pipes that need to be positioned before electrical runs), then the electrician, then both inspections before closing up walls. A well-organized contractor can get both rough-in inspections completed within the same week, keeping your project on schedule.

When You Need Only One or Neither

Not every bathroom renovation needs both permits. If you are only doing electrical work — for example, adding GFCI outlets and a heated floor circuit to a bathroom where the plumbing stays untouched — you need only the ESA electrical permit. If you are only doing plumbing work — such as replacing a bathtub with a walk-in shower that requires a new drain position — you need only the plumbing permit (assuming no new electrical is involved).

And as noted earlier, a purely cosmetic refresh — new tile, vanity swap in the same location, paint, hardware — typically requires neither permit, since you are not modifying any plumbing connections or electrical wiring.

Budget and Timeline Impact

Combined permit fees for a bathroom renovation involving both plumbing and electrical typically total $250–$700 — a modest cost relative to the overall project budget. The timeline impact is more significant: allow 2–4 weeks for permit approvals, and build inspection scheduling into your construction timeline. Rushed permit applications with incomplete drawings get bounced back for revisions, adding unnecessary delays. Your contractor should factor permit timelines into the project schedule from the start.