ERA Key Realty Services is one of the leading real estate brokerage companies in Massachusetts. The company was organized in 1988 as a small independent brokerage until 1993 when it became a member of the national ERA Franchise System. In 1998, ERA Homeowners Advantage merged with ERA John Nelson to create ERA Key Realty Services. Since then, the firm had grown from 68 agents and 6 Offices to...