The US architecture industry includes firms working across commercial buildings, healthcare, education, aviation, sports, infrastructure and urban development. Some firms focus mainly on architecture and design, while others combine architecture with engineering, planning and other professional services.

Revenue also varies widely between the largest firms. Gensler leads this list by a considerable margin, followed by Perkins&Will and HKS. Several of the other firms have built their businesses around specialised areas such as airports, healthcare, data centres, sports venues and large public projects.

This article covers 10 of the largest architecture firms in the USA based on the 2025 revenue figures provided in the source material. The figures are used to rank the firms, while the specialties and projects give a clearer idea of the type of work each firm handles.

Quick Look at the Top 10 Architecture Firms in the USA

Rank	Architecture Firm	Headquarters	2025 Revenue	Main Specialty
1	Gensler	San Francisco, CA	$1,945.25 million	Commercial, workplace and urban design
2	Perkins&Will	Chicago, IL	$795.48 million	Healthcare, education and civic design
3	HKS	Dallas, TX	$732.60 million	Sports, entertainment, healthcare and hospitality
4	Corgan	Dallas, TX	$675.75 million	Aviation, data centres and corporate work
5	Jacobs Solutions Inc.	Dallas, TX	$603.30 million	Infrastructure and advanced manufacturing
6	HDR	Omaha, NE	$528.84 million	Healthcare, research and civic infrastructure
7	AECOM	Los Angeles, CA	$516.80 million	Architecture, engineering and master planning
8	Populous	Kansas City, MO	$503.12 million	Stadiums, arenas and convention centres
9	Stantec Inc.	New York, NY / Global	$464.96 million	Community development and urban architecture
10	HOK	St. Louis, MO	$431.72 million	Aviation, corporate, sports and healthcare design

1. Gensler

2025 Revenue: $1,945.25 million
Headquarters: San Francisco, CA
Main Business: Commercial, workplace, urban design and large-scale interior architecture

Gensler is the largest firm on this list by a wide margin. Its work covers commercial buildings, workplaces, urban design and large interior projects.

The firm has worked on projects in different parts of the world, including the Shanghai Tower. Its portfolio also includes fit-outs for Facebook and Meta facilities and work connected with major airports.

Commercial and workplace design make up an important part of Gensler’s business. The firm also works on larger urban projects where architecture forms part of a wider development.

With 2025 revenue of about $1.95 billion, Gensler is well ahead of the other firms included in the ranking.

Unique Offerings

● Commercial architecture
● Workplace design
● Urban design
● Large-scale interior architecture
● Airport and major infrastructure projects

Official website: Gensler

2. Perkins&Will

2025 Revenue: $795.48 million
Headquarters: Chicago, IL
Main Business: Healthcare, higher education and civic design

Perkins&Will is the second-largest firm in the list by the supplied 2025 revenue figures. The firm is known for work in healthcare, higher education and civic spaces.

Sustainable and high-performance design is an important part of its approach. Its projects include Rush University Medical Center, while the firm has also worked with the Tongji University Architectural Design and Research Institute.

The firm’s work covers buildings used by hospitals, universities and public institutions. These projects often require more than a conventional commercial design because of their technical and operational requirements.

Perkins&Will reported approximately $795.48 million in revenue for 2025 in the source material.

Unique Offerings

● Healthcare design
● Higher education projects
● Civic architecture
● Sustainable design
● High-performance buildings

Official website: Perkins&Will

3. HKS

2025 Revenue: $732.60 million
Headquarters: Dallas, TX
Main Business: Sports, entertainment, healthcare and hospitality

HKS is a Dallas-based architecture firm with major practices in sports, entertainment, healthcare and hospitality.

Sports venues are one of the firm’s better-known areas. HKS was involved in the design of SoFi Stadium in Inglewood, California, and U.S. Bank Stadium in Minneapolis.

The firm’s portfolio also extends into healthcare and hospitality. This gives HKS a mix of large public venues and buildings with very different day-to-day uses.

Its 2025 revenue was approximately $732.60 million, putting it third in this ranking.

Unique Offerings

● Sports architecture
● Entertainment venues
● Healthcare design
● Hospitality projects
● Large-scale venue design

Official website: HKS

4. Corgan

2025 Revenue: $675.75 million
Headquarters: Dallas, TX
Main Business: Aviation, data centres, corporate workspaces and educational facilities

Corgan works across several specialised areas, with aviation and data centres among its major fields. The firm also designs corporate workspaces and educational facilities.

Its aviation work includes projects connected with Dallas/Fort Worth International Airport. The firm also works on mission-critical data centres, which have become an important part of the building sector.

These projects require different types of planning. An airport has to handle large numbers of passengers and complex transport systems, while a data centre has very different technical requirements.

Corgan recorded approximately $675.75 million in 2025 revenue in the source figures.

Unique Offerings

● Aviation architecture
● Data centre design
● Corporate workspaces
● Educational facilities
● Mission-critical projects

Official website: Corgan

5. Jacobs Solutions Inc.

2025 Revenue: $603.30 million in architectural segment earnings
Headquarters: Dallas, TX
Main Business: Infrastructure, advanced manufacturing and government facilities

Jacobs Solutions Inc. works across architecture, engineering and infrastructure. The architectural segment figures place it fifth in this list.

The firm has experience with government facilities, advanced manufacturing and research environments. Its project work includes NASA facilities and complex federal and industrial research laboratories.

These projects are often highly specialised. Research and government buildings can involve technical requirements that differ considerably from standard commercial architecture.

The $603.30 million figure provided for Jacobs refers to total architectural segment earnings, rather than the company’s overall corporate revenue.

Unique Offerings

● Infrastructure design
● Government facilities
● Advanced manufacturing
● Research laboratories
● NASA-related facilities

Official website: Jacobs

6. HDR

2025 Revenue: $528.84 million
Headquarters: Omaha, NE
Main Business: Healthcare, science and research buildings and civic infrastructure

HDR is known for work in healthcare, science and research buildings and civic infrastructure. The firm works on projects where building design often has to meet demanding technical requirements.

Its healthcare portfolio includes projects for Mayo Clinic and Cleveland Clinic. These facilities require careful planning because they combine medical services, technology and large numbers of patients and staff.

HDR also works on civic infrastructure and research facilities. Its range of projects puts it in several parts of the public and institutional building market.

The firm’s 2025 revenue was listed at approximately $528.84 million.

Unique Offerings

● Healthcare architecture
● Science and research facilities
● Civic infrastructure
● Medical facilities
● Institutional design

Official website: HDR

7. AECOM

2025 Revenue: $516.80 million
Headquarters: Los Angeles, CA
Main Business: Architecture, engineering and large-scale master planning

AECOM combines architecture with engineering and master planning. The firm’s work therefore extends beyond individual buildings to larger infrastructure and development projects.

Its projects include components of the World Trade Center master planning work and international transit hubs.

Large infrastructure projects often require several disciplines to work together. AECOM’s combination of architecture, engineering and planning allows the firm to work across these areas.

The source material lists approximately $516.80 million in 2025 revenue for its architecture ranking.

Unique Offerings

● Architecture and engineering
● Master planning
● Infrastructure projects
● Transit hubs
● Large development programmes

Official website: AECOM

8. Populous

2025 Revenue: $503.12 million
Headquarters: Kansas City, MO
Main Business: Convention centres, arenas and sports stadiums

Populous has a more specialised focus than many of the firms above it. Its work centres on sports stadiums, arenas and convention centres.

The firm’s projects include T-Mobile Arena in Las Vegas and renovation work at Wembley Stadium.

Sports venues have their own design requirements. Seating, crowd movement, sightlines and other practical considerations all have to be addressed alongside the overall design of the building.

Populous recorded approximately $503.12 million in 2025 revenue in the figures supplied.

Unique Offerings

● Sports stadiums
● Arenas
● Convention centres
● Venue design
● Stadium renovations

Official website: Populous

9. Stantec Inc.

2025 Revenue: $464.96 million
Headquarters: New York, NY / Global
Main Business: Community development, building engineering and urban architecture

Stantec works across architecture, engineering and community development. Its projects include civic and healthcare networks as well as public educational campuses.

The firm’s work is not limited to individual buildings. Community development and urban architecture also form part of its practice.

Healthcare and education projects can involve several buildings and services rather than a single standalone structure. That requires planning at a wider level.

Stantec’s 2025 revenue in the source material was approximately $464.96 million.

Unique Offerings

● Community development
● Urban architecture
● Building engineering
● Healthcare networks
● Educational campuses

Official website: Stantec

10. HOK

2025 Revenue: $431.72 million
Headquarters: St. Louis, MO
Main Business: Aviation, corporate, justice, sports and healthcare design

HOK works across several major building sectors. Aviation, corporate, justice, sports and healthcare are among its main areas.

One of its notable projects is LaGuardia Airport Terminal B. The firm has also worked on corporate campuses, including projects for State Farm.

The range of sectors gives HOK a varied portfolio. Airport terminals, corporate campuses and healthcare buildings all have different planning and operational requirements.

HOK ranks tenth in this list with approximately $431.72 million in 2025 revenue.

Unique Offerings

● Aviation design
● Corporate architecture
● Justice facilities
● Sports design
● Healthcare architecture

Official website: HOK

Why the Architecture Industry Is Important in the USA

Large Firms Work Across Many Sectors

The firms in this list do not all focus on the same type of building. Gensler has a strong commercial and workplace practice, while HKS is well known for sports and healthcare. Populous concentrates heavily on sports venues and convention centres.

This range reflects the size of the US construction and development market. Different sectors create demand for firms with different areas of experience.

Healthcare and Research Need Specialist Design

Healthcare and research buildings appear repeatedly among the firms on this list. Perkins&Will, HDR, HKS and HOK all have significant work in these areas.

Hospitals and research facilities have requirements that go beyond appearance. The layout has to work around equipment, staff movement, patients, safety and other practical needs.

Airports Are a Major Area of Work

Aviation is another common specialty. Corgan, HOK and Gensler have all worked on airport-related projects.

Airport architecture involves large passenger areas, transport connections and complex operational systems. Projects can also continue for several years as airports expand or replace existing facilities.

Architecture and Engineering Often Overlap

Several of the firms listed here combine architecture with engineering, planning or other professional services. Jacobs and AECOM are clear examples of this approach.

That combination is useful on large infrastructure and public projects where a building is only one part of a much bigger development.

Conclusion

Gensler leads the list of the top US architecture firms by a significant margin, with 2025 revenue of approximately $1.95 billion. Perkins&Will, HKS and Corgan follow, with strong positions in healthcare, sports, aviation, workplaces and other specialised areas.

The remaining firms also have distinct strengths. Jacobs and AECOM work heavily across infrastructure and engineering, Populous focuses on major sports and entertainment venues, while HDR, Stantec and HOK have broad institutional and public-sector practices.

Together, these firms show the range of work handled by large architecture practices in the USA, from hospitals and airports to stadiums, research facilities, corporate buildings and major urban projects.

FAQs

Which is the largest architecture firm in the USA by revenue?

Gensler ranks first in this list with 2025 revenue of approximately $1,945.25 million.

Which architecture firm is based in Chicago?

Perkins&Will is headquartered in Chicago, Illinois. Its 2025 revenue in the supplied figures was approximately $795.48 million.

Which architecture firms are known for sports stadiums?

HKS and Populous are both well known for sports and stadium projects. HKS worked on SoFi Stadium and U.S. Bank Stadium, while Populous has worked on projects including T-Mobile Arena and Wembley Stadium renovations.

Which architecture firms specialise in healthcare?

Perkins&Will, HKS, HDR and HOK all have healthcare work among their major areas. HDR’s project examples include facilities connected with Mayo Clinic and Cleveland Clinic.

Which architecture firms work on airports?

Gensler, Corgan and HOK are among the firms in this list with major aviation work. Corgan has worked on Dallas/Fort Worth International Airport projects, while HOK worked on LaGuardia Airport Terminal B.

What does Populous specialise in?

Populous specialises in sports stadiums, arenas and convention centres. Its listed projects include T-Mobile Arena in Las Vegas and renovations at Wembley Stadium.

Which architecture firms also provide engineering services?

AECOM, Jacobs and Stantec combine architecture with engineering or other related professional services. Their work includes infrastructure, planning and large public projects.