Founded in 1975, CENTURY 21 Alliance-Mantua is a full-service real estate firm with a presence in Mantua, N.J. The company specializes in the sale and purchase of residential and commercial properties. It provides various relocation support, tenant procurement, financing and consultation services. CENTURY 21 Alliance-Mantua is a part of Century 21 Real Estate, which is the franchisor of one of the world s largest residential real estate sales organizations. The parent company provides training, management, administrative and marketing support services. It comprises more than 8,300 independently owned and operated franchised broker offices in over 50 countries and territories worldwide. Century 21 Real Estate is a subsidiary of Realogy Corporation, which is a global provider of real estate and relocation services.