A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. The new law is we can no longer force sellers to pay commsion to the buyer's hired agent.That was also the old law, but brokers ignored it. A OneTime Showing Agreement form is a legally binding agreement between the buyer's broker and the homeowner listing the property for sale. INTRODUCTION: These guidelines are provided to assist an agent who is completing the Exclusive Right to Sell Listing. The agent called this week and said another agent in her office would like to show our house to some clients if we're still open to it. Selling your home and not sure what a listing agreement is? Our comprehensive guide will help you navigate this crucial contract with ease. Real estate agents commonly use standardized, fill-in-the-blank forms that cover all the bases, including the ones described in this article. Home for around two hours.