And if they refuse at first, they will often accept if you offer to pay the first few months of rent in advance. Applying for an apartment?Application (Includes cosigner form, if needed). 1. Complete the next 5 pages of this packet yourself. This must be paid at the time of application completion. Generally a job offer letter will show your new salary and that will help that you will be financially able to pay rent. Learn how to write a proof of income letter with our stepbystep guide and use our fillintheblanks template as an example. The processing of tenant and occupant applications is a PointofService function. • Must fill out an application in-person. • Be drug free and pass drug screening.