Bathroom Lighting & Electrical: A Marin Remodel Guide

The most effective approach is lighting on both sides of the mirror, at roughly face height, which illuminates your face evenly and eliminates the harsh shadows a single overhead fixture creates. This is especially valued for grooming and makeup. Beyond the vanity, layering in general ceiling lighting and perhaps accent lighting gives the room both function and ambiance. Choosing a flattering, consistent color temperature across the fixtures matters too. Planning this layered lighting during a remodel, when you can place fixtures and run wiring freely, produces far better results than working around existing fixture locations.

Yes — GFCI (ground-fault circuit interrupter) protection is required by code for bathroom outlets, because the combination of water and electricity creates a real shock hazard. A GFCI detects when current is straying (for instance, through a person) and cuts power in a fraction of a second, preventing serious or fatal shock. This isn’t optional or a nice-to-have; it’s a firm requirement for the wet environment. Any bathroom remodel must include proper GFCI protection on the outlets, and an electrician ensures it’s correctly installed as part of bringing the bathroom up to current code.

A bathroom exhaust fan removes the moisture generated by showers and baths, which is essential for preventing mold and mildew growth and for protecting the room’s finishes and the electrical components from humidity damage. The fan should be sized appropriately for the room and, critically, vented to the outside — not just into the attic, where the moisture would cause problems. In Marin’s damp climate, good ventilation is especially important. A remodel is the ideal time to install or upgrade a properly sized, correctly vented fan, often coordinated with the lighting plan.

Code requires dedicated circuit capacity for bathroom receptacles, and beyond that, heavy loads warrant their own dedicated circuits — for example, electric heated floors, a heat lamp, or other significant fixtures. A modern bathroom can have more electrical demand than people expect once you account for lighting, outlets, ventilation, and any comfort features. Planning adequate dedicated circuits during the remodel, while the walls are open, ensures the bathroom has the capacity it needs without overloading. An electrician determines the required circuits based on your fixtures and the applicable code.

Yes — a remodel is the ideal (really the only practical) time to add electric heated floors, since they’re installed under the flooring. Electrically, heated floors typically need their own dedicated circuit and a compatible thermostat/control, which an electrician plans and wires as part of the project. Because the work happens beneath the finished floor, coordinating it with the flooring installation and the rest of the bathroom electrical is essential. If heated floors are on your wish list, raise it early in the remodel planning so the circuit and controls are designed in from the start.

Because a remodel opens the walls and floor, making it far easier and cheaper to run new circuits, place lighting exactly where you want it, add GFCI protection, install a properly vented fan, and wire features like heated floors. Retrofitting any of these into a finished bathroom means opening up walls again — costly and disruptive. Planning the full electrical scope up front, while everything is accessible, lets you get the lighting, safety, ventilation, and capacity right in one coordinated effort. It’s the difference between a bathroom that merely looks updated and one that’s truly well-built.