Is there any way I can indicate on my application that I will be using a cosigner? 1. A completed and signed application from all proposed occupants 18 years of age and older must be submitted.When requested, applicants can enter other co-applicants, co-signers, and guarantors they'll be applying with on their rental application. This guide will provide all the necessary information you need to screen, process, and add a cosigner to a lease. Rental App Form Phase 2. About, Listings, Resources, Reviews, Contact, Tour. Route 66 Warranty has a complete line of coverage designed to keep your vehicle on the road. Even the most reliable vehicle can develop a mechanical problem. Please list all sources of income. You must discuss your actual credit situation and fill out the lender's required documents prior to obtaining an extension of credit.