Property Management with a Townhouse?

[Brandon Boogren]

Hello! I am considering purchasing a townhouse as a rental investment property. All townhouses in my area have HOA fees each month. My question is this:

How much can I rely on the HOA (it says it includes professional property management) to "manage" my property? 

When purchasing a townhouse with HOAs as an investment property, do people still hire a property management company? 

Hiring a property management company seems like it costs a decent amount of money (10-11%) so ideally, I'd like to not have that expense. Thoughts?