With a presence in West Grove, Pa., CENTURY 21 Alliance is a real estate firm that operates more than 15 offices and employs over 600 sales associates. The company serves the Aston, Blue Bell, Buckingham, Collegeville, Doylestown, Drexel Hill, Exton, Havertown, Lafayette Hill, Lansdale and Levittown communities in Pennsylvania. It provides mortgage lending assistance, relocation support and insurance services to buyers, sellers, builders and investors. CENTURY 21 Alliance 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. 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.