The letter should state whether the deposit is being returned in full, partially returned, or not returned at all. Here's everything you need to know about not returning security deposits, including a security deposit refund letter template.A security deposit return letter serves as formal documentation that details the return of the security deposit to the resident after they move out. Prepare an Application for a Certificate of Deposit Please read the instructions on page 4 of the application carefully before completing. Request Letter For Refund Of Security Deposit: Property Code Texas,2014 Letter Writing S.k. Tarafder,2010-09-19 New Home Journal Laura. Re: Return of security deposit.