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. Steps in the Mortgage Loan Assumption Process ; 1. Review the Original Mortgage Agreement: ; 2. ِProspective buyer submits loan application and required documents. 5. ِBuyer approval received. 6. Basic Parts of the Loan Agreement: Commitment letters, promissory notes, credit agreements, mortgages, assignments and guarantees.