A system and method for allowing a plurality of Sellers of real estate to either list their real estate "By Owner" or "By Agent." Those Sellers that list "By Owner" may select a time period after which their property may be converted to a "By Agent" listing. "By Owner" Sellers may choose to "push" their listing to only Agents that specialize in selling a particular type of property within the geographic region of the property. Agents may also offer their services to "By Owner" Sellers that have listed properties matching the Agent' s specialty. Real estate Buyers may, through a single interface, access all properties that meet the Buyers' criteria, whether listed "By Owner" or "By Agent."