Talk with either your broker your sales manager or your legal team to ensure that the contracts and disclosures that you're filling out are being done correctly. A listing agreement is a contract between homeowners and brokers that legally establishes how a realtor will find a property buyer on the seller's behalf.What it is, and how to send it out for signature in Docusign. 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. Contract Formation: A listing agreement is a contract for services. It is not required to be in writing in order for it to be enforceable. INTRODUCTION: These guidelines are provided to assist an agent who is completing the Exclusive Right to Sell Listing.