Century 21 C&S Properties, founded in 1991, is a real estate firm located in Stoughton, Mass. The company deals in the buying and selling of a range of condominiums and multifamily and single-family homes. It is a member of the National Association of Realtors and Massachusetts Association of Realtors. Century 21 C&S Properties is affiliated with Century 21 Real Estate, one of the world's largest residential real estate organizations that offers services through more than 8,000 independently owned and operated offices. Century 21 Real Estate offers services in more than 50 countries located in North America, Latin America, Europe, the Middle East and Asia.