To find a reputable commercial or residential electrician in Ottawa, start by searching for a Licensed Electrical Contractor in your area. Once you have a shortlist of companies, ask the LECs to provide you with their ECRA/ESA license number. This will prove that they are licensed in Ontario and can legally perform the electrical work in your home or business. Then check their credentials, online reviews, and ask for some references to ensure that their previous customers were happy with the work they provided.