Holding Deposits
If you apply for a unit, a landlord may charge you a deposit to hold the unit while screening your application and/or as security that you will move in once you've been offered a rental agreement. Holding deposits require a written receipt that clearly describe the terms. A landlord cannot keep a holding deposit if you fail the application screening. However, if you change your mind about renting the unit, you will likely forfeit the holding deposit.
See the state laws for holding deposits.