Atlanta Buy, Hold, Rent Regulations

I would like to learn about the regulations in Atlanta regarding limits on rental tenants. I have heard that it's near impossible to buy a condo now to rent out to someone. Is this the case in Atlanta? I was curious about townhomes and single family homes that have HOA's as well. I used to live in Atlanta but don't anymore. Ideally, I would like to purchase a home or townhome and hold on to it while hiring a local property manager.

Thanks,

Kevin