Do I need an ESA inspection for the electrical work in my bathroom renovation?

Yes — any new or modified electrical work in a bathroom renovation in Ontario requires an ESA (Electrical Safety Authority) inspection. This is a legal requirement under the Ontario Electrical Safety Code, and it applies whether you're adding a single GFCI outlet or rewiring the entire bathroom.

The ESA is Ontario's independent regulatory authority responsible for electrical safety. They administer the Ontario Electrical Safety Code, issue electrical permits (called Notifications of Work), and inspect electrical installations across the province. For GTA homeowners doing bathroom renovations, the ESA inspection is a mandatory step that your licensed electrician should coordinate as part of their scope of work.

What Triggers an ESA Inspection

In a bathroom renovation context, virtually any electrical work beyond replacing a light bulb or swapping a cover plate requires an ESA notification and inspection. Common bathroom electrical work that triggers the requirement includes installing or replacing GFCI outlets, adding new outlets (such as behind the toilet for a bidet seat), installing or replacing an exhaust fan, adding or modifying vanity lighting, installing recessed pot lights, wiring a heated floor system, adding a dedicated circuit for bathroom receptacles, and any work that involves opening walls to access or modify wiring.

If your renovation is purely cosmetic — new paint, new vanity in the same location, new mirror, new hardware — with no electrical modifications, then no ESA inspection is needed. But in practice, most GTA bathroom renovations involve at least some electrical changes.

How the Process Works

Your licensed electrician files an electronic Notification of Work with the ESA before beginning the electrical installation. This notification serves as the electrical permit and generates a confirmation number. The cost is typically $100–$300 depending on the scope of work, and your electrician includes this in their quote.

Once the rough-in electrical work is complete — new wiring run through studs, junction boxes installed, circuits connected at the panel — your electrician requests an ESA inspection. The inspector examines the work before walls are closed up with drywall, verifying proper wire sizing, circuit protection, GFCI placement, box fill calculations, and compliance with the Ontario Electrical Safety Code.

This timing is critical for your renovation schedule. The electrical rough-in inspection must happen after plumbing rough-in is complete but before drywall installation. In a typical GTA bathroom renovation timeline, this falls around week 2–3 of the project. Delays in scheduling the ESA inspection can hold up the entire renovation, so experienced GTA bathroom contractors build this inspection window into their project schedule.

What Happens If You Skip It

Skipping the ESA inspection creates several serious problems. Insurance implications are the most immediate concern — if an electrical fire or incident occurs in your home due to uninspected electrical work, your home insurance company may deny the claim. Resale complications arise when a buyer's home inspector identifies unpermitted electrical work, which can derail a sale or require costly remediation. The City of Toronto's building department can also require you to open finished walls for retroactive inspection, meaning your new tile and drywall may need to come down.

More fundamentally, the inspection exists because bathroom electrical work involves circuits operating in a wet environment where the consequences of improper installation are severe. Improperly wired GFCI circuits, missing bonding connections, incorrect wire sizing for heated floor systems, and exhaust fans wired without proper circuit protection are all safety hazards that an ESA inspection catches.

Hiring the Right Electrician

In Ontario, only a Licensed Electrical Contractor (LEC) can legally perform electrical work and file ESA notifications. When your bathroom contractor brings in an electrician, verify that they are a registered LEC with the ESA — you can check their licence status on the ESA website. The electrician's licence number should appear on the Notification of Work.

A good GTA bathroom contractor will coordinate the ESA inspection seamlessly within the project timeline so it doesn't cause delays. Need help finding a professional bathroom renovator? Toronto Bath Remodeling can match you for free.