RESIDENTIAL ONE-TIME SHOWING AGREEMENT. A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers.A OneTime Showing Agreement form is a legally binding agreement between the buyer's broker and the homeowner listing the property for sale. 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. By August 17 all Realtors must have a signed buyer brokerage agreement in place before showing a house to a consumer. A Commission Agreement for Sale is used for one-time showings of real estate so a Realtor can show a home to a prospective buyer and be paid a commission. This resource provides information about what provisions must be included in the written agreement pursuant to the NAR settlement as well as other provisions. Some agents will ask you to sign something called a buyer's agent agreement before they start showing you homes. Seller in a specific real estate transaction. Then spend your time hiring a competent agent BEFORE you go look at dozens of homes.