No they hire property managers not realtors.If you own enough rentals or you own an apartment building (or many apartment buildings) you have your own property manager, maintenance staff, rental coordinator, etc. it is all done in house. Small landlords who live in the same city as their rentals rarely hire a property manager because most of their profits would go to paying the property manager. The owners are the ones who advertise the rental on places like kijiji, Craigslist, etc. (the websites depend on the area), do light maintenance themselves or hire someone to do it, etc. The rentals shown by realtors tend to be high end properties when owners don’t live in Canada or at least in the same city/province.