Mason & Hanger

What Mason & Hanger does

Mason & Hanger is an architecture and engineering (A/E) firm founded in 1827, operating as the wholly-owned A/E Design Group subsidiary of Day & Zimmermann, a family-owned Philadelphia-based conglomerate. The firm provides integrated design services across architecture, civil/structural/mechanical/electrical engineering, life safety and fire protection, BIM/CIM, commissioning, construction administration, energy and sustainability, munitions modernization, and physical/cyber security design for secure, mission-driven facilities. Its client base is exclusively the U.S. Federal Government — Department of Defense (Army, Navy, Air Force, Marines, National Guard), Department of State, Department of Energy, NASA, GSA, and DHS — supported by past performance qualifications spanning 75 years with DoE and 120 years with DoD, and project execution in more than 175 countries. The firm is recognized as the longest operating American A/E firm supporting the U.S. Federal Government and ranks among the top 15 A/E firms in Government Building Design nationally.

Technical capabilities include Cyber-Informed Engineering (CIE) anchored in Idaho National Laboratory's 12 principles, BIM/CIM-based design technology, advanced whole-building energy modeling, and microgrid design integrating renewable generation and battery storage for resilient operations. Quantified project outcomes include a 20% cooling-load reduction on the New Consulate Compound in Nogales, LEED Silver certification on the 397,000 SF Logistics University at Fort Lee, and engineering for the largest microgrid on the U.S. east coast at the FDA Central Utility Plant. The firm is ISO 9001:2015 certified, won ACEC National Recognition (2026), ACEC Virginia Grand Award (2026), ACEC Honor Award (2025), and PSMJ AEC Circle of Excellence (2025), and climbed to No. 348 on ENR's 2026 Top 500 Design Firms (up from No. 373 in 2025).

Mason & Hanger operates as a government contractor generating revenue through professional services contracts awarded via competitive federal procurement (RFPs, IDIQs, task orders). Pricing is not publicly disclosed and is established through bidding and negotiated fee arrangements; major contract values include a $99M five-year NAVFAC Southeast task order won via joint venture with Tetra Tech (March 2026) and a $134.9M New Consulate Compound in Nogales. The firm leverages Joint Ventures with Tier-1 primes like Tetra Tech to pursue large-scale awards and serves as subconsultant to design excellence architects such as Kieran Timberlake and HOK on federal projects. Revenue is not separately reported from parent Day & Zimmermann, which posted $2.9B in consolidated revenue in 2026; Mason & Hanger is a sub-250-employee design-services unit within that broader organization.

Name

Mason & Hanger

Legal name

Mason & Hanger

Website

https://masonandhanger.com

Company type

Private

Founded year

1827

Operating status

Operating

Headcount range

101–250 employees

Short description

Mason & Hanger is an architecture and engineering firm founded in 1827, providing integrated A/E design services for secure, mission-driven U.S. federal facilities worldwide. It serves the DoD, Department of State, DoE, NASA, and GSA as a subsidiary of Day & Zimmermann.

Ownership category

akta.pro rank

Headquarters

HQ city

Lexington

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Federal Government A/E Services: Mason & Hanger generates revenue primarily through professional services contracts with U.S. federal government agencies including DoD (Army, Navy, Air Force, Marines, National Guard), Department of State, Department of Energy, Department of Homeland Security, NASA, and GSA. Revenue comes from architect-engineer services including design, engineering, commissioning, construction administration, and technical services for military infrastructure, embassy compounds, and secure government facilities.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Mason & Hanger provides comprehensive architectural and engineering (A/E) services for the worldwide design of secure, mission-driven government facilities. Its offerings include architecture and master planning, civil/structural/mechanical/electrical engineering, life safety and fire protection, BIM/CIM, commissioning, construction contract administration, energy and sustainability services, munitions modernization, and security design. The firm serves U.S. federal clients including the Department of Defense, Department of State, Department of Energy, NASA, GSA, and DHS across thousands of projects in more than 175 countries.

Product overview

Mason & Hanger is an architecture and engineering (A/E) services firm providing comprehensive, integrated design services for secure, mission-driven government facilities worldwide. The firm operates as a single unified service offering organized around distinct service disciplines rather than discrete software products. The core portfolio includes Architecture & Planning (architecture, interior design, master planning), Engineering (civil, structural, mechanical, electrical, life safety/fire protection, BIM/CIM), Commissioning, Construction Contract Administration, Energy & Sustainability Services, Design Technology, Munitions Modernization, and Security Design Services. These services are delivered as an integrated practice where multidisciplinary teams collaborate across the full project lifecycle from planning through construction administration, serving federal government clients including the Department of Defense, Department of State, Department of Energy, and NASA.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture & Planning Services Comprehensive architectural and interior design services including master planning for secure, mission-driven government facilities. Delivers customized, streamlined solutions focused on communication and quality control across every mission.
• Engineering Services Multidiscipline engineering services specializing in highly complex, mission-driven, secure facilities, including civil, structural, mechanical, electrical, and life safety/fire protection engineering, supported by BIM/CIM capabilities for project delivery.
• Commissioning Services Building systems commissioning that ensures equipment and systems perform interactively according to design intent and the owner's operational needs for secure federal facilities.
• Construction Contract Administration Construction administration services overseeing project execution, quality assurance, and compliance during the build phase for federal design and design-build projects.
• Energy & Sustainability Services Sustainable design offerings including comprehensive energy and water conservation measures, greenhouse gas reduction, LEED certification support, renewable energy and microgrid integration, and electric vehicle planning for federal facilities.
• Design Technology (BIM/CIM) Advanced Building Information Modeling and Construction Information Modeling (BIM/CIM) capabilities supporting design, visualization, and construction administration for complex federal projects.
• Munitions Modernization Planning, design, engineering, and construction support services for munitions and industrial facilities for the U.S. Army Corps of Engineers, U.S. Navy, and other government agencies.
• Security Design Services Physical and cyber-informed security design services ensuring the safety of the U.S. Government's people, infrastructure, assets, and data from today's threats, including application of Cyber-Informed Engineering principles to OT system design.

Quantifiable outcome

• Design solutions achieving 20% reduced cooling load compared to baseline building model (New Consulate Compound Nogales)
• +2 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Tetra TechcoreStrategic or Co-development Partner · 12 March 2026Joint venture (JV) partner for the $99 million NAVFAC Southeast architect-engineer services contract. The JV with Tetra Tech delivers comprehensive engineering and design services for resilient military infrastructure including waterfront, marine facility refurbishment, and shore-based facilities. Ben Lilly, President of Mason & Hanger, stated the award reflects 'the strength of our partnership with Tetra Tech.'
• Day & ZimmermanncoreOthersMason & Hanger is a Day & Zimmermann (D&Z) company. D&Z is a family-owned provider of construction & engineering, staffing, and defense solutions. Mason & Hanger serves as D&Z's Architecture & Engineering (A/E) Design Group. Day & Zimmermann has 43,000+ employees, 150+ worldwide locations, and $2.7 billion USD in annual revenue.
• Kieran TimberlakeminorStrategic or Co-development PartnerDesign excellence architect on the Foreign Affairs Security Training Center (FASTC) project at Fort Pickett, VA. Mason & Hanger served as subconsultant providing tactical training consultant services, architectural and engineering design for 14 hard skills structures including mock embassy compound, firing ranges, and training facilities.
• BL Harbert InternationalminorStrategic or Co-development PartnerPartner on NASA Flight Dynamics Research Facility (FDRF) design-build contract at Langley Research Center. Mason & Hanger is a contributing partner on this project alongside BLHI and Calspan Aero Systems Engineering.
• Calspan Aero Systems Engineering, Inc.minorStrategic or Co-development PartnerPartner on NASA Flight Dynamics Research Facility (FDRF) design-build contract. Working alongside Mason & Hanger and BL Harbert International on this wind tunnel project.
• HOKminorStrategic or Co-development PartnerDesign Architect for Logistics University at Fort Lee, VA. Mason & Hanger served as engineering design team on this 397,000 SF education and simulation facility project targeting LEED Silver certification.
• Balfour Beatty ConstructionminorImplementation/ SI/ Consulting PartnerContractor for Logistics University at Fort Lee, VA project. Mason & Hanger provided engineering design services while Balfour Beatty served as the prime contractor.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• HDR: Top-ranked ENR design firm with a significant federal architecture/engineering practice serving the Army, VA, GSA, and Air Force. Directly competes with Mason & Hanger for military, healthcare, and federal-civil A/E work.
• Page (now Page Southerland Page): Architecture and engineering firm with a recognized State Department and federal-civil practice, including secure embassy and consulate design. Closest direct peer in diplomatic-facility A/E.
• Burns & McDonnell: 100% employee-owned engineering firm with a strong federal facilities practice serving the Army, Air Force, and NAVFAC. Competes with Mason & Hanger for mission-critical military facility design and military construction (MILCON) work.
• Tetra Tech: Global consulting and engineering firm with a deep federal practice across DoD, DoS, and DoE. Direct JV partner with Mason & Hanger on the $99M NAVFAC Southeast IDIQ and a primary competitor for the same large federal A/E task orders.
• AECOM: Global infrastructure consulting firm with a major federal services division covering DoD, intelligence community, and State Department programs. Directly competes with Mason & Hanger for large federal A/E and program-management contracts.
• Kieran Timberlake: Design-excellence architecture firm that selected Mason & Hanger as engineering subconsultant for FASTC at Fort Pickett. Competes with Mason & Hanger for the same federal design awards, often as prime architect on facilities where Mason & Hanger plays a supporting engineering role.
• WSP: Global professional services firm with a federal/defense practice serving DoD, GSA, and VA. Directly competes with Mason & Hanger for federal building design and engineering work in the U.S. and internationally.
• Stantec: Engineering, architecture, and environmental services firm with federal practice spanning DoD, DoE, and GSA facilities. Directly competes with Mason & Hanger for military and government infrastructure design work.
• Jacobs Solutions: Large-scale engineering and technical services provider with substantial federal/defense/intelligence architecture and engineering work. Directly competes with Mason & Hanger for high-security mission-critical facilities.

Broad incumbents

• HOK: Global architecture practice with a large federal/defense division. Served as design architect on Logistics University at Fort Lee where Mason & Hanger was engineering subconsultant; competes broadly across federal A/E and design-build opportunities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/masonandhanger
• YouTubeyoutube.com/channel/UCQbDKTTqXGCkc4Ak6t4dj0g
• Facebookfacebook.com/masonandhanger
• LinkedInlinkedin.com/company/mason-%26-hanger

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mason & Hanger