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.GCAAR MEMBERS ONLY – Download all the contracts, disclosures, and forms you will need for a real estate transaction in Montgomery County, MD. The Certificates represent proportionate interests in a. INTRODUCTION: These guidelines are provided to assist an agent who is completing the Exclusive Right to Sell Listing. What Is a Listing Agreement? A listing agreement is a legal document between a property owner (seller) and a licensed real estate broker.