Heavily screen renters in a 30K house who can only afford $500 a month?
You're going to get some people who live in the ghetto for a *reason*. Either they are on welfare/section 8, or they are working poor, or have terrible credit, prior evictions or bad rental history, something. People don't often enjoy living in 30K neighborhoods where the areas are older, run down, crime riddled, poor, etc. If they had steady solid income and good credit and no criminal history, they would not be living in a 30K house. 300K, yes. 130K, yes. I like tenants to have a job- and a steady job, good/decent rental history, averagely good/decent credit, no criminal record, and have some *stake* in their lives-- a steady career and a J-O-B, good credit, something. Someone living in a 30K home is less likely to take care of a property in general than someone paying high rent for a 300K home. The more of your butt that's on the line, often the great your desire to take good care of it. Think of it like this: you have a Pinto and a Porsche. Which will you take better care of? There are, of course, sometimes exceptions with the very poor people living in the ghetto who do take good care of their homes. Also in such neighborhoods there are sometimes working poor immigrants who work 80 hours a week cleaning other people's houses and don't have much time to care for their own house. Environment, upbringing, assets, socioeconomic status, having stake on the line (career, assets, security deposit, something) affect these things. And, of course, some renters in $300K homes trash nice homes too-- it's just less likely from what I've seen than in $30K homes as the $300K renter has a job and is more easily garnishable.
I would not buy in that sort of poor neighborhoods, especially not to start, nor would I participate in section 8.