Top 10 Architecture Companies in United States 2025

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Companies	Employees	HQ location	Revenue	Founded	Estimated Traffic	Industries
Hdr	View 14,345 employees	🇺🇸 Nebraska, Omaha+178	$ 500-1000M	1917	931,803	Consulting, Civil Engineering
Noma	View 39 employees	🇺🇸 District Of Columbia, Washington+5	$ 500-1000M	1971	58,943	Association, Education
Gensler	View 7,776 employees	🇺🇸 California, San Francisco+86	$ 500-1000M	1965	409,548	Architecture, Interior Design
Turner Construction Company	View 15,041 employees	🇺🇸 New York+82	$ 500-1000M	1902	162,567	Interior Design, Architecture
Toll Brothers	View 4,793 employees	🇺🇸 Pennsylvania, Upper Dublin Township+3	$ 500-1000M	1967	44,299	Construction, Home Renovation
Gilbane Building Company	View 4,086 employees	🇺🇸 Rhode Island, Providence+10	$ 500-1000M	1870	312,612	Construction, Project Management
Walter P Moore	View 1,186 employees	🇺🇸 Texas, Houston+48	$ 500-1000M	1931	195,989	Architecture, Interior Design
Thornton Tomasetti	View 1,879 employees	🇺🇸 New York+6	$ 500-1000M	1949	100,100	Consulting, Project Management
Vhb	View 2,379 employees	🇺🇸 Massachusetts, Watertown+39	$ 500-1000M	1979	47,088	Civil Engineering, Construction
Nucor Building Systems	View 631 employees	🇺🇸 Indiana, Waterloo+8	$ 500-1000M	1987	126,800	Construction, Building Material
Hdr	View 14,345 employees	🇺🇸 Nebraska, Omaha+178	$ 500-1000M	1917	931,803	Consulting, Civil Engineering
Noma	View 39 employees	🇺🇸 District Of Columbia, Washington+5	$ 500-1000M	1971	58,943	Association, Education
Gensler	View 7,776 employees	🇺🇸 California, San Francisco+86	$ 500-1000M	1965	409,548	Architecture, Interior Design
Turner Construction Company	View 15,041 employees	🇺🇸 New York+82	$ 500-1000M	1902	162,567	Interior Design, Architecture
Toll Brothers	View 4,793 employees	🇺🇸 Pennsylvania, Upper Dublin Township+3	$ 500-1000M	1967	44,299	Construction, Home Renovation
Gilbane Building Company	View 4,086 employees	🇺🇸 Rhode Island, Providence+10	$ 500-1000M	1870	312,612	Construction, Project Management
Walter P Moore	View 1,186 employees	🇺🇸 Texas, Houston+48	$ 500-1000M	1931	195,989	Architecture, Interior Design
Thornton Tomasetti	View 1,879 employees	🇺🇸 New York+6	$ 500-1000M	1949	100,100	Consulting, Project Management
Vhb	View 2,379 employees	🇺🇸 Massachusetts, Watertown+39	$ 500-1000M	1979	47,088	Civil Engineering, Construction
Nucor Building Systems	View 631 employees	🇺🇸 Indiana, Waterloo+8	$ 500-1000M	1987	126,800	Construction, Building Material

1. Hdr

Hdr, based in the US, is a global leader in architecture, engineering, and consulting services. Their expertise spans sectors, with a strong presence in designing highly efficient and sustainable buildings tailored to client needs. HDR’s approach integrates environmental considerations to create spaces that are not only visually appealing but also enhance their surroundings. Their architectural projects in the US often involve collaborative processes that ensure practical and innovative outcomes, reinforcing their reputation for excellence in the architectural community.

Location 🇺🇸 Nebraska, Omaha	Size View 14,345 employees
Revenue $ 500-1000M	Industries Professional Services, Science and Engineering, Real Estate, Software
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2. Noma

Noma, headquartered in the U.S., serves as the National Organization of Minority Architects, a vital entity committed to the development and advancement of minority professionals within the architecture industry. Apart from advocating for increased representation and inclusivity, Noma collaborates with major architecture firms and professionals across the country to provide education, networking opportunities, and resources. This organizations’ contribution is essential for fostering diversity and empowering underrepresented voices within the architectural sector, reinforcing a progressive and inclusive future in the industry.

Location 🇺🇸 District Of Columbia, Washington	Size View 39 employees
Revenue $ 500-1000M	Industries Community and Lifestyle, Education, Real Estate
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3. Gensler

Gensler, headquartered strategically across numerous locations in the U.S., stands as a beacon of architectural and planning excellence globally, delivering forward-thinking designs that enhance urban environments. Specializing in various sectors including commercial, hospitality, educational, and more, Gensler integrates sustainability and technological innovations into its projects, redefining skylines and communities. In the U.S., particularly, Gensler’s influence is visible in iconic constructions and smart city projects, demonstrating not only architectural expertise but also a keen understanding of strategic business development through design.

Location 🇺🇸 California, San Francisco	Size View 7,776 employees
Revenue $ 500-1000M	Industries Real Estate, Design, Professional Services
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4. Turner Construction Company

Turner Construction Company, headquartered in New York, is a prominent player in the US architecture and construction industry. Known for its extensive range of services from building high-rises to educational facilities, Turner has made its mark through commitment to sustainability and innovative building solutions. In the realm of architecture, they often collaborate with leading architectural firms to bring complex structures to life, underlining their expertise in managing large scale projects efficiently. Their focus on safety, quality, and client satisfaction continues to strengthen their presence across various sectors within the US.

Location 🇺🇸 New York	Size View 15,041 employees
Revenue $ 500-1000M	Industries Real Estate, Design, Commerce and Shopping
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5. Toll Brothers

Toll Brothers, headquartered in the US, stands as a prominent figure in the luxury home building sector, specializing in crafting meticulously designed single-family homes, townhouses, and high-rise condominiums. Operating mainly in affluent markets, this company emphasizes architectural innovation and personalized design options to meet the sophisticated desires of their clientele. Their projects consistently showcase a deep commitment to quality and luxury, reinforcing their reputation in the architecture industry across numerous states including sought-after urban and suburban areas. Their strategic operations focus not just on building homes, but on creating lifestyle experiences, making them a distinctive leader in their field.

Location 🇺🇸 Pennsylvania, Upper Dublin Township	Size View 4,793 employees
Revenue $ 500-1000M	Industries Real Estate, Design
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6. Gilbane Building Company

Gilbane Building Company, based in the US, is a renowned leader in the architecture industry, offering comprehensive construction and building services. Known for its innovative approach to project management, Gilbane specializes in constructing high-quality buildings that meet the exacting standards of functionality and design. With a rich history spanning over 150 years, Gilbane has played a significant role in shaping the architectural landscape across numerous states, delivering projects that range from commercial high-rises to educational facilities. Their focus on sustainable practices and the integration of new technologies resonates with the evolving trends within the architecture sector.

Location 🇺🇸 Rhode Island, Providence	Size View 4,086 employees
Revenue $ 500-1000M	Industries Professional Services, Real Estate, Science and Engineering
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7. Walter P Moore

Walter P Moore, headquartered in Houston, Texas, is an internationally recognized engineering consulting firm deeply embedded in the architectural landscape of the US. The company is celebrated for delivering innovative solutions in the complex world of civil and structural engineering. In the realm of architecture, Walter P Moore contributes by designing resilient structures that enhance the functionality and aesthetic value of large-scale projects across various sectors including healthcare, education, and sporting venues. Renowned for integrating sustainable practices, their strategies are tailor-made to meet both contemporary demands and future needs, making them a key player in fostering urban growth and architectural resilience.

Location 🇺🇸 Texas, Houston	Size View 1,186 employees
Revenue $ 500-1000M	Industries Real Estate, Design, Professional Services, Science and Engineering
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8. Thornton Tomasetti

Thornton Tomasetti, based in the US, stands at the forefront of integrated engineering design and consulting in the architecture industry. Renowned for their expertise in structural engineering, façade engineering, and sustainability practices, they are trusted by both public and private sector clients to enhance the resilience and efficiency of their structures. Aiming to push the boundaries of innovation and performance, Thornton Tomasetti continuously adapts to emerging technologies, ensuring their projects not only meet but exceed expectations in architectural design. Their strategy often involves pioneering the use of sustainable materials and methods in their projects, reflecting their commitment to building a more sustainable future.

Location 🇺🇸 New York	Size View 1,879 employees
Revenue $ 500-1000M	Industries Professional Services, Real Estate, Science and Engineering, Design, Hardware
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10. Nucor Building Systems

Nucor Building Systems, an integral part of the Nucor Corporation, is a prominent player in the U.S. architectural landscape, specializing in the design and manufacture of custom-engineered metal building systems. With a strong commitment to sustainability and innovation, Nucor Building Systems provides solutions that are not only efficient and durable but also tailored to meet specific client needs in various sectors including commercial, industrial, and agricultural. Their operations in the US focus on using recycled materials and advanced technologies to lead the way in eco-friendly construction practices.

Location 🇺🇸 Indiana, Waterloo	Size View 631 employees
Revenue $ 500-1000M	Industries Real Estate, Manufacturing
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