This document provides a sample payoff request letter that can be used as a guide. Creating a payoff letter is essential to any loan or mortgage repayment process.Our free templates and this guide can help you get started. If you need a template, click here to download borrower authorization template. 20 MB max file size. Our guide will teach you how to write a letter of explanation, plus offers a free template to help you write one of your own. Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started. If you are selling or refinancing your home and you have an existing LAHD loan, we offer payoff services for borrowers as well as Subordinations. Please email requests for Subordination Agreements to the Los Angeles County Development Authority's (LACDA) Loan Servicing Unit: sfloan.