Born and raised in Westchester , John Joseph Hahn, is the owner and founder of Hahn Contracting. A graduate of Business Administration, John has worked in the industry for more than 25 years, specializing in the newest techniques of renovation, reconstruction, and new development. John is customer oriented and remains in contact with his clients, architects, and subcontractors during all projects and always closes the project with a personal walk through to ensure customer satisfaction.