not sure how much of a deposit to ask for on a rental property

[Rolando Frias]

We are in the process of putting our sfh up for rent and are stuck on what payments to ask for upfront. In the past we already had a tenant tell us to keep the deposit as the last month rent and then left us a mess and some repairs that were above normal wear and tear. We are considering asking for the first month and a security deposit that is $500 over the monthly rent amount. What is common practice in the dfw area.

Thanks in advance