Exclusive Agency Agreement. An exclusive agency agreement is a contract that gives a single agent or broker the right to sell a property.Exclusive agency listing agreements are most often used with flatfee listing brokers who provide limited service to their clients. Exclusive Right to Sell or Lease Listing Agreement. An exclusive right to sell listing agreement is a legal contract between a seller and a real estate broker or agent to sell a property. Appointment of Broker. 7.01 Each property listing filed with the MLS must be an "exclusive righttosell (or lease)" or an "exclusive agency" listing. An Exclusive Agency Listing is a type of property listing agreement used in the real estate industry. Luxury Dallas homes, condos, high rises, townhomes, lofts, apartments for sale or rent. Start Your Search With Dallas Luxury Realty!