Do I need to upgrade bathroom wiring to current code when renovating an older Vancouver home?

In most cases, yes — when you renovate a bathroom in an older Vancouver home and pull a permit, the work you touch must meet current BC Building Code and Canadian Electrical Code standards, even if the original wiring was code-compliant when it was installed. This does not necessarily mean rewiring the entire bathroom from scratch, but it often means upgrading key safety features that modern code requires.

The principle at work is called the "upgrade on renovation" rule. BC does not require you to proactively bring your entire home's wiring up to current code just because it is old. However, the moment you open walls, replace fixtures, or modify circuits as part of a bathroom renovation, the electrical work within the scope of that renovation must comply with the current Canadian Electrical Code as enforced by Technical Safety BC. In practical terms, this almost always triggers several upgrades in older Metro Vancouver homes.

GFCI protection is the most common upgrade. Current code requires GFCI protection on all bathroom receptacles and circuits serving wet areas. Homes built before the mid-1970s typically have no GFCI protection in bathrooms. Homes from the 1980s and 1990s may have GFCI receptacles that are outdated or no longer functioning properly. Your electrician will install GFCI-protected receptacles or a GFCI breaker at the panel — typically $150–$400 depending on the approach.

Dedicated bathroom circuits are another common upgrade. Current code requires a dedicated 20-amp circuit for bathroom receptacles, separate from the lighting circuit. In many pre-1980 Vancouver homes, the bathroom shares a circuit with hallway lights or a bedroom — a setup that was common but no longer meets code. Adding a dedicated circuit from the panel typically costs $300–$600 including the permit.

Exhaust fan wiring often needs upgrading in older homes. If your renovation includes installing or upgrading a bathroom exhaust fan — and in Vancouver's humid climate, a properly ducted exhaust fan rated at 50–110 CFM is essential — the fan circuit must meet current code. Many older Vancouver homes either have no bathroom fan at all or have a fan wired into the lighting circuit without a separate switch. A new fan circuit with a timer switch or humidity-sensing switch typically costs $200–$500 for the electrical portion.

Knob-and-tube wiring is a particular concern in Vancouver's pre-war housing stock — homes built before 1945 in neighbourhoods like Kitsilano, Dunbar, Mount Pleasant, and East Vancouver. If your bathroom renovation reveals active knob-and-tube wiring, it must be replaced within the renovation scope. Knob-and-tube has no ground conductor, cannot support GFCI protection, and is incompatible with modern insulation requirements. Replacing knob-and-tube wiring in a bathroom typically costs $1,000–$3,000 depending on accessibility and the distance to the panel.

Heated floors are increasingly popular in Metro Vancouver bathroom renovations and require their own dedicated circuit, a GFCI-protected connection, and a separate electrical permit. If you are adding electric radiant floor heating during your renovation, budget $1,500–$4,000 for the heating system installed, including the electrical work.

All bathroom electrical work in BC must be done by a licensed electrician and requires an electrical permit with inspection through Technical Safety BC. The permit fee is typically $100–$200, and the inspection ensures everything meets current code. This is not optional and not a place to cut corners — bathroom electrical safety is literally a life-and-death matter in a room where water and electricity are in close proximity.