Architectural Engineering Companies in the USA

Architectural engineering is all about blending great design with functionality. In the USA, architectural engineering companies play a crucial role in making sure buildings are not just visually appealing but also structurally sound, energy-efficient, and sustainable. These firms bring together architects, engineers, and construction experts to create spaces that are safe, efficient, and beautiful. In this article, we’ll take a closer look at some of the top architectural engineering companies across the country and how they’re shaping the future of construction.

2. Tejjy Inc.

Tejjy Inc. is a company based in Rockville, Maryland, operating as an 8(a) Certified Women-Owned Small Business. It focuses on architectural engineering and construction services across the United States. The company has been active for over 18 years and works on projects in sectors like commercial, residential, educational, and government buildings. Their process involves client consultations, site evaluations with laser scanning, and creating designs through sketches and feasibility studies, followed by adjustments based on stakeholder input.

The company uses Building Information Modeling (BIM) and Virtual Design and Construction (VDC) in its workflow. One example of their work includes a 25,000-square-foot healthcare facility in Washington, DC, where they developed a 3D BIM model at LOD 300, along with visualizations, renderings, and shop drawings for coordination between trades. They also handle restoration and renovation projects, using in-house scanning to manage cases where original drawings are missing.

Tejjy Inc. has completed over 2,500 projects, ranging from floor plans and as-built drawings to full-scale construction management. Their team consists of architects, engineers, and BIM specialists who work on various project types, including high-rise buildings and historic structures. The company operates with a focus on integrating technology into the design and construction process, aiming to align with industry standards and environmental considerations.

Key Highlights

• Based in Rockville, Maryland, with over 18 years of operation.
• Completed over 2,500 projects across multiple sectors.
• Uses BIM and VDC for design and construction processes.
• Worked on a 25,000-square-foot healthcare facility in Washington, DC.

Services

• Architectural engineering
• BIM services
• Structural engineering
• MEP services
• Facility management
• 3D visualization and rendering
• Construction documents
• CAD drafting
• Scan-to-BIM
• Permit expediting

3. HKS Inc.

HKS Inc. is an architecture and design firm with offices in cities like Dallas, New York, London, and Singapore. The company works on projects in sectors such as health, education, hospitality, and sports. Their team includes architects, designers, and planners who focus on creating designs for buildings and spaces, with an emphasis on research and environmental impact. In 2025, Heath May took over as CEO and Chairman from Dan Noble.

Their projects include designs like the Cleveland Browns’ stadium, aimed at changing the fan experience, and Auckland Stadium in the Asia Pacific region. The company also engages in outreach to Historically Black Colleges and Universities (HBCUs) as part of its efforts to diversify its workforce. HKS has been involved in initiatives like the Building Brains Coalition, which connects built environment professionals with fields like neuroscience and public health.

The firm uses research to inform its design process and works on projects recognized by groups like the American Institute of Architects. Their portfolio covers a range of building types, from medical centers to student housing, with a focus on adapting to user needs. HKS operates globally, with additional offices in places like Dubai, Mexico City, and Tokyo, handling both local and international projects.

Key Highlights

• Operates offices in multiple cities worldwide, including Dallas and London.
• Heath May became CEO and Chairman in 2025.
• Involved in the Building Brains Coalition initiative.
• Designs projects like the Cleveland Browns’ stadium.

Services

• Architecture
• Interior design
• Structural engineering
• Planning and urban design
• Sustainable design
• Advisory services
• Experiential branding
• Research

4. Uppteam

Uppteam is a company that provides remote design support for architectural and engineering projects, based in the United States. It has completed over 2,000 projects and serves more than 20 long-term clients. Their team consists of over 250 people, including designers and virtual administrators, who work on tasks ranging from drafting to project coordination. The company trains its staff upon hiring, regardless of prior experience.

Their work includes producing construction drawings, 3D renderings, and BIM designs for firms in the architectural, engineering, and construction (AEC) industry. Uppteam focuses on adapting to client needs and offers support in areas like clash detection and construction document production. Clients have used their services for projects involving residential, commercial, and industrial designs, with an emphasis on flexibility and coordination.

The company operates with a structure that includes virtual admin support alongside design services. Uppteam’s portfolio shows examples of their work in MEP design, structural detailing, and civil engineering projects. They aim to handle tasks that allow AEC firms to scale operations, using tools like REVIT and AutoCAD for technical drawings and models.

Key Highlights

• Completed over 2,000 projects with more than 20 long-term clients.
• Team includes over 250 staff members.
• Provides remote design support for AEC firms.
• Offers training to all designers upon hiring.

Services

• Architectural design
• MEP design
• Structural services
• Civil designs
• BIM services
• Virtual admin support
• Third-party quality control
• 3D rendering
• Construction drawing support

5. NORR

NORR is a company that started in 1938 and works in architecture, engineering, planning, and interior design. It’s based in multiple countries, including Canada, the US, UK, and UAE, with offices in cities like Toronto and London. The company has a team of 750 people, including architects, engineers, and designers, and they handle projects in 12 different sectors, such as commercial, education, and transportation buildings. Their work focuses on combining design with technology to meet client needs.

The company is employee-owned and uses a process that covers everything from the first idea to the finished building. They’ve done projects like the Ontario Court of Justice in Toronto and the Stephenson Building at Newcastle University, which was built with a focus on reducing carbon use. Their team also looks at things like converting old offices into homes and using modular construction methods, based on what’s on their website.

NORR has a program called NORRForward that deals with energy use, diversity, and community impact. They’ve been around for over 85 years and work on projects that range from hospitals to retail spaces. The company uses tools like virtual reality and simulation in their design process, and they’ve got people in different roles, like directors for sustainability and retail, handling specific parts of their projects.

Key Highlights

• Started in 1938, with offices in Canada, US, UK, and UAE.
• Team consists of 750 architects, engineers, and designers.
• Worked on projects like Ontario Court of Justice and Stephenson Building.
• Has a program called NORRForward focusing on energy and community.

Services

• Architecture
• Interior design
• Structural engineering
• MEP engineering
• Master planning and urban design
• Sustainability services

6. HDR Inc.

HDR Inc. is a company that’s been around since 1917 and does architecture, engineering, and design work. It’s fully owned by its employees and has offices in places like the US, Canada, and Australia. Their team works on projects in areas like healthcare, education, and transportation, designing buildings such as hospitals and university campuses. They’ve got a process that uses data to plan projects and focuses on reducing environmental impact.

The company has done projects like the Rush University Medical Center in Chicago and the Western Sydney University Bankstown City Campus. Their website mentions using a regenerative design approach, which looks at things like carbon, water, and biodiversity in their projects. They also use alternative delivery methods, meaning they handle projects in ways that differ from standard construction processes, based on what they say online.

HDR has over 11,000 employees across its offices and covers a bunch of different services beyond architecture, like infrastructure and landscape design. They’ve got directors for specific areas, like civic design and interiors, and they’ve had some of their work recognized by Fast Company for innovation in the past couple of years. The company started in Omaha, Nebraska, and has grown to work on projects globally.

Key Highlights

• Founded in 1917, employee-owned with over 11,000 staff.
• Offices in the US, Canada, Australia, and other locations.
• Projects include Rush University Medical Center and Western Sydney University campus.
• Uses a regenerative design approach focusing on carbon and biodiversity.

Services

• Architectural design
• Interior design
• Building engineering
• Landscape architecture
• Infrastructure design
• Lighting design
• Signage and wayfinding
• Data-driven design

7. HGA

HGA is a company that started in 1953 in Minnesota, founded by Richard Hammel, Curt Green, and Bruce Abrahamson. It’s got offices in 13 cities across the US, like Minneapolis, San Diego, and Boston, and employs over 1,000 people. Their team works on architecture, engineering, and planning for projects in sectors like healthcare, education, and government. They’ve been around for over 60 years and focus on using research and curiosity in their design process.

The company has done projects like the Jackson Hole History Museum and the San Diego Symphony at Jacobs Music Center. Their website mentions a mix of building types, from hospitals to cultural centers, and they’ve got a history of working on stuff that’s been around a while, like the Benedicta Arts Center from 1964, which they expanded in 2006. HGA is employee-owned and has grown from a small basement setup to a bigger operation with a bunch of different specialists on staff.

Their work covers eight main areas, including arts and culture, corporate spaces, and science facilities. They’ve got a thing called the Just Label 2.0 from the International Living Future Institute, which is about how they run things, like treating employees and investing in communities. The company also puts out monthly design insights and has been involved in projects like the Lehigh University Health, Science, and Technology building.

Key Highlights

• Founded in 1953 in Minnesota, now in 13 US cities.
• Over 1,000 employees working in architecture and engineering.
• Projects include Jackson Hole History Museum and San Diego Symphony.
• Employee-owned with a focus on research-driven design.

Services

• Architecture
• Engineering
• Planning
• Interior design
• Landscape architecture
• Lighting design
• Sustainable design
• Design research

8. OPN Architects

OPN Architects is a design firm that’s been around since 1979, based in the Midwest with offices in Cedar Rapids, Des Moines, Iowa City, Madison, and Minneapolis. Their team handles architecture projects for things like fire stations, libraries, and performing arts buildings. They’ve got about 130 people working across these locations and have been involved in stuff like the Marion Fire Station No. 1, which got an AIA Architecture Honor Award.

The company started in Iowa and has expanded over the years to take on a variety of projects. Their website talks about using sketches, renderings, and augmented reality to plan out designs before building starts. They’ve done work for public and private clients, including a big performing arts center and a library in Cedar Rapids, and they’ve been around long enough to have a mix of experience in different building types.

OPN Architects focuses on getting to know clients beyond just budgets and timelines, according to their site. They’ve got a process that involves measuring things out and using tech to show what a project will look like. The firm has been recognized by the American Institute of Architects for some of its work, and they’ve got a presence in five cities across Iowa, Wisconsin, and Minnesota.

Key Highlights

• Started in 1979, based in Iowa with five Midwest offices.
• Around 130 employees working on architecture projects.
• Marion Fire Station No. 1 received an AIA Architecture Honor Award.
• Expanded from Iowa to Wisconsin and Minnesota over the years.

Services

• Architecture
• Sustainability planning
• Design analytics
• Innovation in design process

9. BRPH

BRPH is a company that kicked off in 1964 in Melbourne, Florida, and works in architecture, engineering, and construction. It’s employee-owned and has offices in places like Atlanta, Charleston, and Orlando, with a team of about 400 people. They’ve been at it for 60 years and handle projects for clients in aerospace, education, and government, including stuff like spaceports and manufacturing campuses.

Their website lists projects like the Lyman High School and mentions they’ve worked on things for the U.S. Space Force and Project Kuiper, which involves satellites. The company also runs a podcast called “Outside the Box with BRPH” that covers topics like aerospace testing and spaceport building. They’ve got a history of doing both design and construction, sometimes for confidential clients, based on what’s online.

BRPH has a grant program that started in 2025, giving up to $10,000 to K-12 teachers in Florida and Georgia for science, tech, engineering, arts, and math projects. Their team includes architects, engineers, and construction folks who work together on everything from small buildings to big, complex setups. The company’s been part of events like the Space Symposium in Colorado too.

Key Highlights

• Founded in 1964 in Melbourne, Florida, with multiple US offices.
• Around 400 employees in architecture, engineering, and construction.
• Involved in Project Kuiper’s satellite launch and U.S. Space Force projects.
• Offers up to $10,000 in grants for K-12 STEAM educators in 2025.

Services

• Architecture
• Engineering
• Construction
• Design
• Mission solutions
• Interior design

10. Ramboll

Ramboll is a global company offering engineering, architecture, and consultancy services, with a staff of over 18,000 working on projects worldwide. Based in Denmark, they focus on creating solutions for governments and businesses, covering areas like infrastructure, buildings, and environmental management. Their team handles projects such as steel production decarbonization and transport infrastructure studies, including a report for the European Climate Foundation on emissions in Nordic transport systems.

The company operates in multiple regions, with offices across Europe, North America, and Asia, and provides services in urban design, structural engineering, and sustainability consulting. Ramboll’s work includes analyzing biodiversity for investors and developing strategies for circular economy transitions. In 2024, they received an ‘A’ rating from CDP for their climate change efforts, based on their internal decarbonization practices and project outcomes.

Key Highlights

• Employs over 18,000 people globally.
• Headquartered in Denmark with international operations.
• Received an ‘A’ rating from CDP for climate efforts in 2024.

Services

• Architectural design
• Structural engineering
• Urban design
• Sustainability consulting
• Environmental services
• Infrastructure planning
• Resource management
• Carbon capture consulting

11. HOK

HOK is a company that offers architectural engineering services along with design and planning. It started in 1955 when three architects – George Hellmuth, Gyo Obata, and George Kassabaum – came together to form the firm. They have 1,700 employees spread across 26 offices on three continents, working on projects like schools, airports, and corporate campuses. Their early work included school designs in St. Louis suburbs, and over time, they expanded to handle bigger stuff like the Dallas/Fort Worth International Airport and the National Air and Space Museum.

Their team uses tools like Building Information Modeling (BIM) to manage the design and construction process. HOK has offices in places like New York, London, and Hong Kong, picked up through mergers with firms like Kahn & Jacobs and Cecil Denny Highton. They’ve worked on projects such as the Levi Strauss & Co. campus in San Francisco and the King Khalid International Airport in Riyadh, focusing on blending engineering with architecture for different building types.

The company also handles sustainability stuff, tracking carbon emissions on projects since going carbon neutral in 2022. Their team has done things like design a zero-emissions office building in St. Louis and a stadium in Atlanta that meets specific environmental standards. They work with groups like Biomimicry 3.8 to figure out designs based on nature, and they’ve got a history of taking on varied projects from healthcare to sports facilities.

Key Highlights

• Started in 1955 in St. Louis, Missouri.
• Has 1,700 employees across 26 offices worldwide.
• Worked on Dallas/Fort Worth International Airport and Levi’s Plaza.
• Uses BIM for design and construction processes.

Services

• Architectural design
• Engineering
• Urban planning
• Interior design
• Structural engineering
• Sustainable design
• Landscape architecture

Conclusion

Architectural engineering companies in the USA are at the forefront of creating innovative and sustainable buildings that stand the test of time. By combining design expertise with technical know-how, these firms ensure that every project is not only aesthetically pleasing but also functional, safe, and energy-efficient. Whether you’re working on a residential home, commercial space, or large-scale development, partnering with the right architectural engineering company is key to achieving your vision. As the industry continues to evolve, these companies will play an essential role in shaping the built environment for years to come.