Local Electricians in Markham

Yes. All electrical work in Markham - including panel upgrades, new circuits, pot lights, and EV charger installations - requires an ESA (Electrical Safety Authority) permit filed by a licensed electrical contractor. Service upgrades also require a City of Markham building permit submitted through the City's online portal. Never hire an electrician who skips the permit.

Many Milliken and Markham Village homes built in the late 1960s and 1970s were wired with aluminum branch circuits, which require CO/ALR-rated devices or copper pigtailing at all connections to reduce fire risk. If your home is from this era and you're planning any electrical work, ask your ESA-licensed electrician to inspect the panel and branch circuits for aluminum wiring before the work scope is finalized. Upgrading aluminum wiring to copper, or pigtailing throughout, often makes sense during a larger renovation.

Most developed residential and commercial areas of Markham - Unionville, Thornhill, Milliken, Cornell, Angus Glen, and Markham Centre - are served by Alectra Utilities, which absorbed the former PowerStream territory in the 2017 merger. Some properties in rural northern Markham and near Locust Hill may be served by Hydro One. Confirm your utility before your electrician orders a new meter connection or panel upgrade, as Alectra's and Hydro One's connection procedures and timelines differ.

Look for a 309A (industrial) or 309C (construction and maintenance) Certificate of Qualification from the Ontario College of Trades, current WSIB clearance, and a minimum $2M general liability policy. Verify the ESA contractor licence number on the ESA website before signing a contract.