Exclusive Right to Sell or Lease Listing Agreement. Exclusive agency listings have an agreement with the listing broker as a non-agency representative of the house sellers.An exclusive right to sell agreement gives one real estate agent and their brokerage the sole right to market and sell a property. The MLS and Texas Real Estate rules require that you sign a listing agreement before we can list your property on the MLS. Seller appoints Broker as Seller's sole and exclusive real estate agent and grants to Broker the exclusive right to sell the Property. 2.