A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers. The Facilitator works to complete the transaction.There will be listing agents who have you sign a one time agreement or a paper saying you agree to go unrepresented if you put in an offer. I'm being asked to complete a buyer representation agreement. Owner agrees to fully reimburse Broker in the event that the Broker incurs a fine as a result of the Owner's failure to communicate a change in listing status. A Massachusetts real estate listing agreement is a legal document through which a real estate agent is assigned to listing a purchasable residential property. It is VERY IMPORTANT to note that an offer can be considered a binding legal contract. An open listing is a nonexclusive contract. This type of listing gives the seller or buyer the right to engage any number of brokers as agents.