Purpose: To release original borrower from liability under the mortgage. Distribution: Recorded original to Servicer.You as the borrower and any co-borrowers must sign, date, and return this form within 30 days from today's date. What you need to know. Forms are required to be filed in the county where the property is located. Ensure all necessary financial information is accurately provided. Steps in the Mortgage Loan Assumption Process ; 1. Review the Original Mortgage Agreement: ; 2. An assumable mortgage allows a qualified buyer to assume a home's remaining mortgage balance. Before you fill out the Loan Qualification Worksheet, find out the current industry numbers from a loan officer or mortgage broker.