A residential real estate sale transaction usually begins at the time a broker obtains an agency contract in the form of a listing from the property owner. A listing agreement is a contract between a property owner and a real estate broker authorizing the broker to represent the seller and find a buyer.A real estate listing agreement also known as a seller's agent agreement is a contract between a property owner and a real estate broker. This Form is to be used for securities offerings made pursuant to Regulation A (17 CFR 230.251 et seq.). Listing Contract completely filled out and signed properly. 11. Research Guides contain complete listing of relevant statutes, regulations, and secondary sources.