I've owned an apartment for around 7 years now. When I bought it the tenants came with. I never once raised the rent. I asked every few years for them to accept a 10% raise, which they rejected. Now I'm paying real attention, I see that they paying 50% of the actual amount I could be receiving for the property. I don't want to make them homeless, but this is a tad silly. Any companies who consult on this?