Your letter should have a professional and informative tone, covering exactly why you're denying their rental application. In the letter, express your appreciation for the applicant's interest and politely explain why you declined them.Under federal law, a landlord who denies your tenant application because of information in a tenant screening report is required to inform you of that fact. A rental application denial letter, also known as an adverse action letter, is a formal document that a landlord or property manager sends to applicants. You should always act fairly, professionally, and compliantly when rejecting rental applications. Check out our guide below for the best practices. Download a customizable rental application rejection letter template for landlords or property managers to professionally notify applicants. Good evening, BP. I'm writing my Tenant Rejection Letter and found some reasons online as to why a tenant is denied their application. We discuss everything you need to know about turning down applicants and provide a template for your convenience. This means that in Maryland, you cannot refuse to rent to someone because they are single or married.