Below we outline some of the common reasons why a rental application may be denied, and how you can fix them. You can ask, but they don't have to answer.They also don't have to be truthful, as admitting to discrimination of any kind is admission of an illegal action. Providing false information: Providing false information on a rental application is a serious offense that can result in immediate denial. Incomplete rental applications that are missing required documentation or inaccurate information are an automatic denial for most property managers and owners. Another valid reason for a property owner to deny tenancy to an applicant is because their rental application was incomplete. In this article, we'll delve into the reasons why rental applications sometimes get denied, provide insights into common pitfalls, and offer valuable tips. The most common reason rental applications get rejected is because of a person's income. I, personally, take applications until a lease is signed. Applications are processed one at a time, first come, first served.