I admit that I did not read all of the replies, but I thought i'll give you some of my experience:
I had some extra money and bought in a particular in-town neighborhood in Atlanta. With purchase and fix-up I'm in the SFH at 15-20K and the duplexes at $ 20-25K. This is a 99% black low-income neighborhood. I had property management when I bought, because I was in California. Then moved back to Atlanta for 1.5 years and managed myself. Then found someone to manage again and that was a disaster.
- Tenants in these neighborhoods typically don't have bank accounts. They deal with cash and money orders. They're used to paying rent directly and will not mail. So, you need to go by and pick up or come up with other scenario. Can be labor intensive, if you don't live close
- Tenants often live paycheck to paycheck and don't actually have much in savings. So, one emergency can create chaos and they'll have to chose between fixing their car to go to work, getting food for the family or paying rent. So, there can be a lot of evictions and turnover.
- It's the kind of neighborhood where certain people watch and the minute a house is empty they will break in and take anything they can sell - water heater, heating system, tear open walls and take wiring etc. So, I put a wireless alarm system into each of my units, so that I get an immediate call, if someone's in there.
- People can get very nasty, if you have to evict. They will call code enforcement and even bust out a window, just so that they can tell the inspector what a horrible landlord you are. And once there and told a sob-story by said tenant, they will find all kinds of little things in an old house.
- Appliances disappear with every eviction, so I only buy used ones. I have a great appliance guy. If something breaks I can just give him the address and the tenant's ph# and he takes care of everything. If the repair is high, he'll suggest for me to get another used one for $ 200.
- I learned that most property managers don't want to handle the low income neighborhoods, because it's labor intensive and their overall take-home is smaller than in a more expensive neighborhood. The few that do work there charge a high monthly minimums, like $ 100/unit, when I have some 1/1 with $ 300/month in rent. That makes your management percentage wise quite high.
That's just off the top of my hat. Overall, I don't regret it. And if I had more money I'd love to buy more right in that neighborhood. I bought with cash, so I don't have to worry about mortgages. Something called the 'Beltline' is being built in Atlanta and my neighborhood is bordering it. So, while I have good cashflow now, there's stuff happening that will be icing on the cake.