Signing up with an agent. Before the agent can market your property, they must sign a contract with you, called an agency agreement.When you sign up with an agent, you enter into a legally binding contract. A listing agreement is a legally binding contract between the property owner and a real estate agent. What is included in a listing agreement? Sales Inspection Report and Exclusive Selling Agency Agreement (Commercial and Industrial) V4. Explore what an exclusive agency agreement is, its legally binding nature, and when to use one. Discover the risks, and stay on top with our free template.