Langan provides an integrated mix of engineering and environmental consulting services in support of land development projects, corporate real estate portfolios, and the energy industry. Our clients include developers, property owners, public agencies, corporations, institutions, and energy companies around the world. Founded in 1970, Langan employs over 1,600 professionals in its Parsippany, NJ headquarters and among regional offices in the states of Washington, California, Arizona, Texas, Colorado, New York, New Jersey, Connecticut, Massachusetts, Pennsylvania, Ohio, and Florida.