Ensure all necessary financial information is accurately provided. Thinking of taking on a mortgage from a family member?Then you'll likely look into a mortgage assumption agreement. THIS MORTGAGE ASSUMPTION AGREEMENT (hereinafter referred to as the. "Agreement") made and entered into as of this ______(1)______ day of ______(2). Requirements – NJSA A. 1. A cover sheet (or electronic synopsis). You will have to fill out many forms: an application with the lender, a real estate agent agreement, paperwork with a title company, and other necessary forms. Get to grips with assumption agreements. This simple guide explains their purpose, key elements, and how they affect your business dealings.