I was told I needed to fill out a rental application (where ssn is required) before viewing it because he gets several requests a day. Ultimately, it is up to you as the landlord to determine whether or not you want to require a Social Security number on your rental application.Rental agents need to know that you have a steady job so you can pay your rent, which you can't have without a Social Security number. â–¡ Social Security number. The application process is easy (processing fees may apply). References: Applicants must have good past rental references. Since the SSN is a required field, have them temporarily enter any 9-digit number so they can continue filling out their rental application and complete it. The good news is that you do not need an SSN on an apartment rental application to screen a prospective tenant. For your security, please DO NOT include any sensitive information, such as your Social Security Number or computer passwords, when contacting us. Application: No Charge.