Campion & Co. purports to serve only Boston's "elite" -- its most affluent citizens. The business specialize in single-family homes (only in Boston's best neighborhoods) and luxury condominiums. Also, it does extensive business with Boston developers purposing to renovate Boston's ancient townhouses and other historic buildings. The head of the company (the eponymous Tracy Campion) has overseen the sale of over $558 million dollars' worth of real estate. Campion & Co. employs 10 principal associates, each of whom has biographical and contact information on the company website. Campion & Co. does business by appointment only.