This type of agreement transfers the obligations of one party under a contract to another party. This Standard Document contains provisions to incorporate an assumption of the delegated obligations and an optional novation into the assignment agreement.In real estate transactions, an assumption agreement allows a third party to "assume" or take over the loan of the property's seller. It allows one party to "assume" the rights and responsibilities of the other party. Upon the terms and subject to the conditions set forth in this. A person who assumes a mortgage takes over a payment from the previous homeowner.