In your letter, you should politely decline the applicant. Download a customizable rental application rejection letter template for landlords or property managers to professionally notify applicants.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. First, clearly state the reason for the appeal of the property's decision and restate their reason for denying your rental application. Just ghost him for a while until new tenant is moved on.