A quick overview of the Massachusetts Association of Realtors exclusive right to sell listing agreement. SELLER authorizes BROKER to act as a dual agent and consents to dual agency.If dual agency occurs in a transaction, a notice of dual agency will be given. Often brokers present sellers with a standard listing agreement (an agreement which contains "standard language"). The Massachusetts Association of REALTORS® form is an Exclusive Buyer Agency Agreement. The listing agreement is a contract that lays out specific, agreedupon terms, giving the real estate agent permission to market a home to buyers. You and your Realtor will likely review this contract in detail and fill it out together. The home seller signs the agreement, which identifies the potential buyer and guarantees the agent a commission should that buyer purchase the home. Listing agreements serve as a hiring contract with the agent for the sale of a property, and are only valid for a set amount of time. The listing contract gives the broker the authority to act on behalf of the seller as an agent in the sale of real property included in the agreement.