How to fill out the Payoff Request Letter Templates? Edit, sign, and share private mortgage payoff letter template online.No need to install software, just go to DocHub, and sign up instantly and for free. 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. Creating a payoff letter is essential to any loan or mortgage repayment process. Our free templates and this guide can help you get started. Once completed, note the SST number and come into our office to finish the process. • The County of Santa Clara has underwritten these loans. • The Housing Trust Manager of Homebuyer Programs has evaluated the loan after the Santa Clara County-.