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. Forms are state specific because real estate laws vary significantly from state to state.There are some big changes for Agents and Buyer in Real Estate in Florida beginning in August of 2024. I legally cannot show you a home without it. A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers.