Rental applications are free for landlords with Zillow Rental Manager, so you can easily verify tenants and fill your vacant rentals online. A rental application is a form that provides the information necessary for a landlord or property owner to determine a tenant's creditworthiness.We offer a free Rental Application form that can be completed online and a Printable Rental Application. Utilize our Rental Application to assess and screen potential tenants before entering into a lease agreement for your rental property. How do I fill this out? To fill out the California Rental Application, gather all necessary personal and financial information before you start. A New York rental application is a legal document that allows a landlord to review a potential tenant's background information and references. Does each tenant need to fill out a rental application? Rental applications are essential for landlords when evaluating new tenants for a vacant rental property. Choose your preferred file format for the Rental Application.