Keller Williams Realty Ranked HighestJ.D . Powers rated Keller Williams Realty with the  highest real estate buyer satisfaction for the 2nd year in a row.  Overall satisfaction is determined by examining three factors for the home-buying experience: agent, office, and package of additional services. The Charleston Keller Williams Realty offices started in 2003 with just 5 agents and has grown to 300 agents with 4 offices in the greater Charleston area.  Congratulations Keller Williams Realty Charleston!