Years ago I owned a house for a little while. It started out in the 50s as a small two bedroom and then over the years someone finished the attic as a legally conforming bedroom, then finished the basement and put the teeniest bedroom in it. Smallest house with four legal bedrooms I have ever seen.

I rented out the spare bedrooms. I was a landlord. No excuses.

But if I ever found myself in that situation again; How can I ethically share the costs of a house if it has an owner? I couldn't figure it out then. I don't think the situation will ever come up again. But I desperately want some kind of absolution in knowing if I could have done better, and how to implement that if it happens again.

The problem I couldn't figure out was how to give the renters some kind of equity. I didn't have trusted friends I could set up some kind of coop with. Setting up a coop with strangers was very high-risk; I have a severe mental illness and i'm disabled most of the time, so if things went badly I would be in an extremely vulnerable position with few options.

Give me some input. A rich uncle you didn't know you had leaves you a small house with four bedrooms in their will. You can't afford the mortgage without some help. What do you do? How do you work around mortgages and ownership?