Owning a rental property can be profitable—but it comes with risk. As a landlord, you can get dodgy tenants, catastrophic home repairs can quickly eat up your contingency budget and day-to-day problems, such as mice in the house, can eat up evenings and weekends.
http://www.moneysense.ca/property/income/3-questions-to-ask-before-you-become-a-landlord/