A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. To securely and accurately complete the One Time Showing Agreement and ensure all legal bases are covered, click the button below.A one time showing agreement can give an agent permission to enter the sale, it does not conform to contracts we accept for entry. 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. Homepage of the City of Sacramento's website. Soon, a buyer's agent must have a signed Buyer Representation Agreement before showing a property. Ensure that you fill out the form accurately, as home shoppers will:. This catalog does not constitute a contract or the terms and conditions of a contract between the student and the campus or the California State University.