I have heard of "showing agreements" where a buyer and broker enter into a brokerage agreement for a limited duration, with no compensation involved. A One Time Showing Agreement is a commission agreement signed between a buyer's agent and a seller for specific named buyers.New Maryland law requires written agreement with real estate agent before home search. Transparency in real estate transaction. There is no law that requires a signed buyers agent agreement before a showing. Appointments are available Monday through Friday, from a.m. When do I need to sign an agreement? Under Maryland law, you will need to have an agreement in place before an agent can work with you in a brokerage capacity. The agent will require you to sign a "listing agreement. " This is a contract describing what the agent is supposed to do and what you must do.