A payoff letter shows the remaining balance on your mortgage, including fees, interest, etc. Learn more about what a payoff quote is and how to request one.Do you need a loan payoff request form? A mortgage payoff letter can come in two forms. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan. You can mail your payments to the payment address listed in the important information box in your welcome letter. A mortgage payoff letter can come in two forms. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan. Simply send a payoff request to LAHD to begin the process. Los Angeles, CA 90051-6263.