When you sign a lease agreement for your apartment home, you were probably required to pay a security deposit. The purpose of this cash advance is to ensure that all the occupants of your apartment abide by the terms of the lease contract. Within 30-days after all the occupants of your apartment home have moved out, the owner or manager of your property is required to provide you with an accounting of you security deposit, including all legally allowable deductions for expenses such as cleaning and repairs.