Most places will accept an offer letter. Generally a job offer letter will show your new salary and that will help that you will be financially able to pay rent.Applying for an apartment? This sample letter is an easy-to-use template that you can use when drafting your own rental cover letter. Simply fill in the blanks and customize as needed. Before renting to you, most landlords will ask you to fill out a written rental application. Learn how to fill out a rental application, what information is required, and what you will need to provide to secure your next place. Below we outline some of the common reasons why a rental application may be denied, and how you can fix them. If you have a positive history with previous landlords, show it off. Evaluating them on a firstcome, firstserved basis, you may fill the vacancy quickly.