Mason & Hanger

Mason & Hanger, a Day & Zimmermann Company, is dedicated to providing architectural and engineering services, specializing in the worldwide design of secure, mission-driven facilities, proudly serving as a partner to the United States Government for nearly two centuries. As one of the longest operating A/E firms in the United States, Mason & Hanger has a rich history covering nearly 200 years. With a mission of Building a More Secure World , the Company has served the federal government on thousands of projects, in 48 states and 165 countries. Mason & Hanger is a top 250 ENR design firm and is ranked #3 for federal and #4 for military revenues among engineering firms by Building Design + Construction.