I am a sales agent and am not sure how to fill out the listing agreement form. Selling your home and not sure what a listing agreement is?Our comprehensive guide will help you navigate this crucial contract with ease. A listing agreement is a legally binding contract between a homeowner and the real estate agent or broker who will be listing the property for sale. No contract agreement to sell = no MLS. If you do not want an agent do FSBO and advertise it other ways. Note: The Texas Association of Realtors and TREC update promulgated forms regularly. Without the broker's permission, a seller terminated a listing agreement before the date stated in the contract. What might the seller owe? A Canceled listing means that the contract between the broker and seller is canceled or the listing is not qualified for inclusion in the MLS.