The Listing Agreement must have a start date and expiration date filled in. We usually list property for a minimum 6-month term.A listing agreement is a contract between homeowners and brokers that legally establishes how a realtor will find a property buyer on the seller's behalf. The ultimate goal of a listing agreement is to give yourself enough time to sell a property at the highest price and for the best possible terms. This Agreement until a sales contract is pending on the Property. 40. What is a listing agreement in real estate?