Mason & Hanger, a Day & Zimmermann (D&Z) Company, ranked No. 25 among Engineering/Architecture firms and No. 144 among Building Design firms overall in Building Design+Construction’s 2026 Giants 400 Report.
The Engineering/Architecture ranking represents a five-position rise from No. 30 in the 2025. The firm's reported revenue increased 26.3%, from $50.5 million to $63.8 million.
Now in its 50th edition, the Giants 400 Report ranks the nation’s largest architecture, engineering and construction firms based on qualifying building-sector revenue. Nearly 600 firms submitted data for the 2026 report, which includes 137 rankings across AEC disciplines, building sectors and specialty categories.
Within that national field, Mason & Hanger maintains a strong, specialized position, supported by integrated architecture and engineering capabilities and an established focus on federal and military facilities.
“These rankings reflect the specialized expertise and dedication of our people,” said Ben Lilly, President of Mason & Hanger. “Our multidisciplinary teams work together to solve complex design challenges and deliver solutions that support our clients’ critical missions. Being recognized among the nation’s leading Engineering/Architecture and Building Design firms reinforces our continued commitment to Building a More Secure World®.”
Together, the two rankings and increased reported revenue reflect Mason & Hanger’s continued growth, technical strength and focus on serving clients with complex, mission-critical requirements.
To read the report and view the rankings, visit:
ABOUT DAY & ZIMMERMANN
When you’ve been around for more than a century, you know a thing or two. At Day & Zimmermann, we take our lifetime of experience and make things better. Our 51,000+ employees help bring big ideas to life every day. We’re pushing the boundaries of innovation in construction & engineering, operations & maintenance, staffing, and security & defense. And that’s not all. Did we mention that we have 150+ worldwide locations with $2.7 billion USD in annual revenue? We put people to work, we protect American freedoms, and we help our customers power and improve the world. We do what we say®. http://www.dayzim.com