Chances are that, when you rented your residence, you were asked for and provided a security deposit which was to be held in escrow throughout your tenancy. This is money used to secure the performance of a lease. If you, the tenant, have fulfilled all of your obligations under the lease, have paid your rent in full and on time, have left no financial obligation to the landlord, and have caused no damage beyond normal/ordinary wear and tear, you are entitled, under the law, to a full return of the security deposit.
If the landlord refuses or doesn’t return your security deposit or send an accounting, the first thing you should do is send a letter requesting that he/she do just that—return your deposit. The purpose of this security deposit demand letter is to request the security deposit back from the landlord. You may also be entitled to interest for your deposit and should ask for your landlord to include any outstanding interest accrued on the deposit.