Brothers Dan and Stuart serve as co-presidents of Real Estate One, which their grandfather, Staunton Elsea, founded in 1929. The firm has become Michigan’s largest real estate brokerage with nearly 2,000 agents who do over $5.7 billion in annual sales. A new fourth generation of Elseas are now making their debut within the company, starting at the bottom just like Dan and Stuart did in the early 1980s.