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.To securely and accurately complete the One Time Showing Agreement and ensure all legal bases are covered, click the button below. Time showing agreement is an agreement between the buyer's agent and the seller. The agreement is subject to the showing of property to potential buyers. 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. The new law or new NAR rules require the buyers to sign a written buyer agreement with the listing agent before they can let the buyer see the house. County, in the State of New York. 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. I'm being asked to complete a buyer representation agreement.