A lot of persons do it, especially if the house is big and they live alone or have a small family or just need some extra money maybe to even help pay the mortgage. Why not just rent part of the house? But this sometimes comes with complications. You get to see a lot of the things the tenants are doing, some of which may not be pleasing to you, probably even some visitors you do not like and other disturbances. So do you think it's a good idea?