Gary Keller, co-founder and chairman of the board of Keller Williams, has a common refrain that has changed the lives of countless agents: “real estate agent” is simply a legal term – what you are is a businessperson. The notion that an agent is merely a broker for buying or selling homes is antiquated. To be successful in sales now means becoming business savvy, and part of being savvy means understanding when and how to expand your business.