Your letter should have a professional and informative tone, covering exactly why you're denying their rental application. Download our free rental application denial letter to use for your rental business.Find your next tenant with Avail tenant screening. In this article, we'll talk you through what's included in a rental application denial letter and even give you a free template to use. You should always act fairly, professionally, and compliantly when rejecting rental applications. Check out our guide below for the best practices. Your polite rental application denial letter should clearly state the applicant's name as given on their original submission. 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. Download a customizable rental application rejection letter template for landlords or property managers to professionally notify applicants.