Nueva, Suite B109 San Antonio, TX 78205; or mail your request to the Bexar County Clerk's Office, 100 Dolorosa, Suite 104, San Antonio, TX 78205. 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. Calculate a mortgage payoff amount earlier to better understand what your loan payments balance. Learn how long it could take to get a pay off quote. When you pay off a mortgage usually the mortgage company will either record a release or send the original release to you to bring into our office and record. We will only issue a payoff good through the next Change Date. If the closing date is past the next Change Date an updated. Under the Loan Information section, you will find a payoff request option that will take you to our payoff request form. The mortgage payoff calculator helps you find out.