View the forms library. 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.Formalize the sale: It officially documents the buyer's offer to purchase a property and the seller's acceptance of that offer. NON-REFUNDABLE PAYMENTS. If an agreement is made, the seller must complete and put forth disclosure forms to the buyer. A real estate listing agreement is a contract between a property owner and a real estate agent. A property owner agrees to pay a commission to a real estate broker for a single showing that results in the sale of the property. (This is the one-time MLS listing fee). Seller agrees that this fee is non-refundable upon activation of the listing in the Multiple Listing Service. NAR offers a number of other forms to members and association staff which are not transaction-related: Real Estate Business Letter Templates.