avoid rent controlled areas. i had to pay my tenants over 10k to move out of one home since they had been there over 10 yrs, along with their moving expenses. also make sure not to hire any ghetto ass black folks cus i've had issues with people treating my property like it's mine -- and not their residency. meaning holes in the walls, carpet and hardwood floor all fukked up, clogged pipes, roaches, rats and ants. honestly, just don't rent to single mothers with kids. they'll call you every time any minor thing happens. if you can, move in a bunch of mexicans. they'll always have their money on time, and they'll never call you for repair. in fact, ya house might end up looking better than it did before they moved in.