First, check their work. If you can get referrals from friends or family that have had painting done recently, this is the best way to find an experienced professional. Check their licenses and insurance with your local Better Business Bureau or Consumer Protection Agency, as well as their work for complaints, if any. It is also advisable to look into the company’s history of projects undertaken. Make sure that they are insured, bonded and certified by WCB (Workplace Safety & Insurance Board).