Understanding the Differences between a Realtor, and a Real estate Agent Definition of a Real Estate Agent and Realtor What is an agent? A realtor is an accredited professional who acts as a mediator between buyers and vendors of real estate. They are members of National Association of Realtors and must adhere to strict codes of ethics. Real estate brokers, on the contrary, are licensed professionals and are not required to be members of the NAR. Both realtors (and real estate agents) help clients purchase, sell, or lease properties. However realtors are able to access additional resources as well as