Property Management Costs

[Brittney Johnson]

I've been studying the Dallas, Tx market and surrounding areas.  I'm looking at buying some single family homes in the area.  I'm not sure what a typical property management company charges there.  Does anyone happen to know the average cost or percentage per month?  Also, if you recommend any particular company that information would be greatly appreciated as well.  

Thank you!  (I'm just starting out).