A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. A written agreement between two parties where one party agrees to provide a specified service to the other.The buyers representation agreement would let the agent show you listings in which the seller covers the commission, but only if you approve. A OneTime Showing Agreement form is a legally binding agreement between the buyer's broker and the homeowner listing the property for sale. The Ultimate Guide to Backpacks: What Type is Right for You? This agreement works well when a Realtor wants to show a buyer a FSBO (For Sale By Owner) home that is not listed in the MLS. Browse through businesses for sale in Tarrant County, TX on AAFD. We look forward to hearing from you.