The Listing Contract (Seller Agency Contract) – Exclusive Right to Sell Real Estate (Form XLS) gives exclusive right to sell residential real property. 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.PAR's Buyer Agency Contract includes all of the legallyrequired language and allows for a buyer's broker fee to be structured in several ways. Selling your home and not sure what a listing agreement is? Our comprehensive guide will help you navigate this crucial contract with ease. The PAR forms are available from the. Pennsylvania Association of REALTORS. The lease term shall be defined as the period between the start and end dates listed in the rental agreement, not including any renewal period(s).