Originally founded in 1926 in Manhattan, New York, the firm became Colliers International in 2010 and operates across the Tri-State Region from its headquarters in Midtown Manhattan. Additional offices are located in Parsippany, NJ; Princeton, NJ and Stamford, CT. Colliers International is a full service commercial real estate firm dedicated to providing exceptional service to our clients across the nation and around the world. Our service lines include tenant representation, landlord representation, retail, investment services, corporate solutions, consulting, project management, valuation & advisory and property management.