An agency agreement is a legally binding contract and it is important that you read and understand it. When you sign up with an agent, you enter into a legally binding contract.A listing agreement must be in writing and needs to set out the agent's fees, commissions, and expenses. All parties on the certificate of title must be included on the agency agreement. A listing agreement is a legally binding contract between the property owner and a real estate agent. What is included in a listing agreement? Residential Exclusive Management Agency Agreement, Download. B) This is a nonexclusive Agreement. REINSW agreements and forms are available in paper format and online via REI Forms Live. You can choose the format that best suits your needs.