Can I put a regular outlet where a switch used to be?

Yes, it is technically possible to convert a switch box to an outlet, but it requires new wiring in almost every case and must be done by a licensed electrician with an ESA permit. The reason is straightforward — a switch box and an outlet box are wired very differently, and most switch boxes do not have the wiring configuration needed to safely power an outlet.

A standard light switch interrupts one conductor (the hot wire) to turn a fixture on and off. The cable at the switch box typically contains a hot wire, a switched wire going to the fixture, and a ground — but in many older Toronto homes, there is no neutral wire at the switch box. An outlet requires both a hot wire and a neutral wire to provide 120V power, plus a ground. Without a neutral, you cannot wire an outlet. Even in newer homes where a neutral is present at the switch box, converting the switch to an outlet means the light fixture that switch controlled will no longer work — so you need a plan for that fixture as well.

If you remove the switch and install an outlet, the circuit also needs to be appropriate for outlet use. Switch circuits in older homes are sometimes wired with 14-gauge wire on a 15A breaker, which is fine for an outlet on a 15A circuit. But the circuit's total load needs to be evaluated — if you are adding an outlet to a circuit that already serves several fixtures and other outlets, you could be pushing the circuit closer to its capacity limit. In kitchens and bathrooms, outlet circuits have specific code requirements under the Ontario Electrical Safety Code, including dedicated circuits for kitchen countertop outlets and GFCI protection in wet areas.

The physical box swap is usually simple — switch boxes and outlet boxes are the same standard size, so the new outlet fits the existing box opening. The electrician may need to replace the box itself if the existing switch box is too shallow for the outlet and wire connections, but in most cases the same box works.

The ESA permit requirement is the key consideration. Since this involves modifying the circuit — changing a switch location to an outlet location and potentially rerouting or extending wiring — it is not a like-for-like swap. This is new work that requires an ESA permit, which runs $100 to $200 for a single-device modification. The total cost for this type of conversion in the GTA typically runs $300 to $600 including the permit, depending on whether new cable needs to be pulled to bring a neutral to the box.

Before committing to this project, discuss the layout with your electrician. There may be a simpler and less expensive solution — for instance, adding a new outlet on an adjacent wall that already has an outlet circuit nearby, rather than converting the switch box. A licensed electrician can evaluate the existing wiring and recommend the most practical approach. Toronto Electrical Repair can match you with a local electrician for a free assessment of your options.