Mason & Hanger, a Day & Zimmermann Company, has established itself as a premier architectural and engineering (A/E) firm, specializing in the design of secure, mission-driven facilities. With nearly two centuries of experience, Mason & Hanger has proudly served as a strategic partner to the United States federal government, contributing its expertise to thousands of projects in over 170 countries worldwide. Its comprehensive range of services includes architecture, planning, civil engineering, structural engineering, mechanical and electrical engineering, and specific services such as life safety engineering, security design, and energy sustainability solutions.
The firm’s projects encompass a variety of essential facilities, including secure office buildings, command and control centers, communications facilities, embassies, and specialized training and military support environments. Mason & Hanger is recognized for its innovative solutions to complex design challenges, consistently prioritizing collaboration and thorough analysis to ensure high-performance outcomes for their clients.
Mason & Hanger has received numerous accolades, including rankings among ENR’s Top 500 Design Firms and the Top firms in Government Building Design. As the longest operating A/E firm supporting U.S. Federal Government entities, it has built a legacy of excellence in safety, integrity, and quality. The firm emphasizes the importance of its culture, which is grounded in diversity and a commitment to creating an inclusive work environment. Mason & Hanger is also proud to contribute to national security, with specific focus on meeting the complex needs of the Department of Defense and other crucial government agencies such as NASA and the Department of Energy. Through its continued dedication to sustainable practices and innovative design, Mason & Hanger is helping to build a more secure world.
