You should look for the following key points when hiring an electrical contractor in Toronto. First and foremost, you'll want to make sure that they are ESA/ECRA licensed and WSIB insured. This will protect you in case of any accidents, injuries, or damage that may occur during the course of the work. Secondly, you'll want to check that they have licensed electricians and registered apprentices on staff. This will ensure that the work is up to code and meets all safety standards. Finally, you'll want to verify that the contractor is locally reputed and provides detailed quotations. By considering these factors, you can be sure that you're hiring the best possible electrical contractor for the job.