Tesla does not require a permit before you install a Tesla charger in your home or office. However, your city will require it. Complying with your City regulations is best. According to the City of Calgary, you must obtain a permit to install a Tesla charger.   While you do a Tesla Wall Charger Installation, the city requires inspections and an electrical permit. This is for safety reasons. Wrong or improper installations can cause fire outbreaks or electrocution. Because of this, only professional and licensed electricians should install the Tesla Charger after obtaining a permit from the city of Calgary.   The essence of obtaining the permit is to show compliance with the electrical code. In the event of before an outbreak when no permit is obtained, the Fire Department official report would clearly state ‘the unpermitted status.' The insurance company, however, will verify this crucial factor before making a big payout. The insurance company will undoubtedly turn down your claim.