As chair and CEO, Spain leads the Alpharetta, Georgia-based brokerage he founded in 2016. The company, which employs a business generation model, does nearly $3 billion in annual sales. With offices throughout the southeastern United States and a Guaranteed Offer program widely publicized in its service areas, Mark Spain Real Estate has become one of the top 100 brokerages in the nation. Before establishing his brokerage, this second-generation agent worked for Keller Williams Realty and Re/Max.