This document finalizes the terms and conditions of the sale and memorializes the rights and obligations of the contracting parties. Any mortgage contract should be in writing, as it protects everyone involved.This article gives basic information on contracts and the general rights and remedies under a contract. There are some more nuanced items you should be sure to include in your real estate purchase contract, including the financing terms and closing date. A Mortgage Agreement is the remedy in case the loan isn't repaid. Minnesota law states that a mortgage encumbering the seller's interest in a contract for deed is. Read Section 342.456 - Agreement to Modify Term of Secondary Mortgage Loan Contract, Tex. Fin. Many forms in Texas are not available in a fillintheblank format. Additionally, the contract usually stipulates that the buyer must make payments to the seller without taking on a mortgage.