The Biggest Architecture Companies in the USA

The Biggest Architecture Companies in the USA

panyArchitecture companies play a crucial role in addressing challenges such as integration of new technologies, flexibility to climate change, and sustainability. They also have architecture companies that play an essential role in designing urban landscapes, such as in the always-developing United States.

Globally and domestically, the biggest architecture companies in the USA have always had a strong impact on architecture. As well as it also includes industry trends and their significant projects. The largest architecture companies in the USA are Skidmore, Owings & Merrill (SOM), Gensler, Jacobs, Perkins & Will, HOK (Hellmuth, Obata & Kassabaum), HDR, and Stantec. 

The USA is full of innovative and boundaries-pushing architectural projects; just have a look at what New York architectural environment looks like. It is a city with the first-ever skyline in the world and the city never stops adding new jaw-dropping projects.

What about the influences of Frank Lloyd Wright?

The USA was always and still is a place for bold ideas that break not only constructional boundaries but also broaden our imagination. While traveling through all the USA you will see interesting new developments everywhere, from LA to Las Vegas, from New York to Seattle. Let us have a look at the biggest USA architectural companies.

Analysis of Major Architecture Companies


The architecture industry in the United States is home to some of the most influential and innovative firms in the world. Moreover, the company’s main motto is to develop new architectural languages, shape skylines, and push the boundaries of design and sustainability. 

Following are the most famous architecture companies in the United States that are:

  • Gensler
  • Skidmore, Owings & Merrill (SOM)
  • Kohn Pedersen Fox Associates (KPF)
  • HOK (Hellmuth, Obata & Kassabaum)
  • Jacobs
  • HDR
  • Stantec
  • Perkins & Will

1. Gensler

Background and Worldwide  Reach:

Gensler was founded in 1965 by Art Gensler, along with his wife, Drue Gensler, and their associate, James Follett. Gensler company has since grown from a small San Francisco-based firm to a global architecture behemoth with offices in over 50 cities worldwide.

Its global reach allows for a deep understanding of local contexts and enables the firm to undertake projects of varying scales and complexities across the world.

Remarkable Projects and Contributions:

Gensler is especially renowned for its different portfolios, which include airports, corporate campuses, skyscrapers, and cultural institutions. And the Shanghai Tower in China,  the second-tallest building in the world, and the Salesforce Tower in San Francisco. Gensler’s projects are also known for their innovative approach to environmental sustainability and stand out among their projects. 

Moreover, Grensler’s contributions extend beyond individual contexts, and enabling the firm to undertake projects of varying scales and complexities across the world.

2. Skidmore, Owings & Merrill (SOM)

Origins and Development:

In 1963 (SOM) was founded by Louis Skidmore and Nathaniel Owings, John O. Merrill joined shortly after that. 

This company quickly established a reputation for its innovative approach to building technology and skyscraper design. Further, it became one of the most influential architecture, urban planning, and engineering firms in the world.

Landmark Projects and Innovations:

SOM’s portfolio claims some of the most iconic structures, including the Willis Tower (formerly Sears Tower) in Chicago and the Burj Khalifa in Dubai, the tallest building in the world. 

The company is known for its pioneering work in high-rise design and for integrating advanced engineering solutions, thereby shaping modern cityscapes.

3. Kohn Pedersen Fox Associates (KPF)

Establishment and International Influence:

It was Established in 1976 by A. Eugene Kohn, William Pedersen, and Sheldon Fox, KPF quickly achieved success for its distinctive approach to high-rise buildings and complex urban projects. 

In addition, the firm has a significant international presence, with projects in more than 35 countries, reflecting its ability to blend design excellence with the urban context.

Major Awards and Designs:

Including the South Korea Lotte World Tower in Seoul and Hudson Yards in New York City. KPF is known for some of the world’s most recognized buildings. 

The firm has received various awards for its innovative designs and contributions to the architectural profession, highlighting its commitment to perfection and sustainability.

4. Perkins & Will

Company History:

It was founded by Lawrence Perkins and Philip Will, Jr in 1935. Perkins & Will, known for its commitment to sustainability and social responsibility, has grown into one of the most respected architecture and design firms. 

The firm has also introduced research-oriented design, focusing on education, health, and flexibility in architecture.

Significant Works and Design Philosophy:

The portfolio of Perkins & Will’s includes educational facilities, healthcare centers, urban developments, human-centered design, and emphasizing sustainability. 

Furthermore, the Discovery and Science Building at the Francis Crick Institute in London and the Shanghai Natural History Museum personify the firm’s innovative approach to integrating nature and architecture.

5. HOK (Hellmuth, Obata & Kassasbaum)

Firm’s Foundation and Expansion

HOK was founded by George Hellmuth, Gyo Obata, and George Kassabaum in 1955. As the company’s commitment to sustainable design and innovation has helped it expand its footprint to more than 20 countries.

HOK has grown from a small St. Louis-based company to a global leader in architecture, engineering, and planning

Major Projects and Areas of Expertise

HOK is known for its wide-ranging portfolio, which includes sports facilities, airports, and corporate headquarters.  

The Mercedes-Benz Stadium in Atlanta and the renovation of the Smithsonian National Air and Space Museum in Washington, D.C., showcase HOK’s ability to blend functionality with groundbreaking design. 

Moreover, this firm is also a leader in sustainable design, with a deep commitment to the 2030 Challenge as it aims for carbon-neutral buildings.

6. Other Notable Firms

Brief Overview of Other Significant Players:


Stantec is known for its commitment to community and design excellence. Com offers professional services in planning, engineering, architecture, interior design, and landscape architecture. 

Further, the firm takes on projects with a focus on creating sustainable and volatile communities.


Specializing in engineering, architecture, environmental, and construction services, HDR is known for its work in healthcare, education, and water projects as the firm combines deep technical expertise with a creative design approach to solve complicated challenges.


With its achievement of CH2M Hill, Jacobs has become a powerhouse in architecture, engineering, and construction services, focusing on sustainable and forward-thinking designs across various sectors, including infrastructure, advanced facilities, and environmental projects.

These firms, along with the ones detailed earlier, not only dominate the architecture scene in the United States but also leave a significant mark on the global stage. And their projects transformed mere buildings, contributing to the fabric of cities and communities around the world. 

Moreover, innovation, sustainability, and design excellence continue to shape our environment in profound and lasting ways.

Impact on Architecture and Urban Development 

In sustainable and green architecture largest firms in the USA have influenced global architectural practices. 

Through their visionary projects and innovative designs, these firms have contributed to the evolution of urban development that impacts how cities grow and function to the needs of their inhabitants. 

As they are:

  • Leading architecture companies, one of the most visible impacts is the transformation of public spaces and skylines. 
  • By these firms, the iconic building design often becomes landmarks, symbols of the city’s cultural dynamism and economic vitality. 
  • Beyond their aesthetic value to the reactivation of neighborhoods and raising community engagement, these structures are designed with a deep understanding of urban context.

By encouraging social interaction and connectivity within the urban structure, these architecture companies enhance urban livability by integrating public spaces such as parks, plazas, and waterfronts. 

Moreover, integrating environmental considerations into their designs, as before they became a global imperative, the biggest architecture firms in the USA have been at the forefront of green architecture and sustainability.  

However, to minimize the environmental footprint of their projects, these firms adopt innovative approaches such as energy-efficient systems and green technologies. In the industry to follow suit, their projects aim for LEED certification that benchmarks sustainability. 

Impacting global architectural practices, the influence of this architecture extends beyond the borders of the United States. Influencing architectural trends worldwide, these firms bring American architectural innovation to international projects as well.


Trends and Future Directions

In emerging priorities such as digitalization and sustainability, the architectural landscape in the USA not only sets standards in design excellence but also has an important role in the direction of architectural trends.

1. Adaptation to Digitalization and Sustainability Demands

From design conception through to construction, digitalization is transforming the way architecture firms operate. Tools that allow for more precise planning, communication of architectural ideas, and visualization, the use of Building Information Modeling (BIM) and virtual reality (VR). 

To set benchmarks for the industry at large, the biggest firms are at the forefront of adopting the technologies. In architectural practices, sustainability demands are also driving significant changes.

2. Emerging Trends Influenced by the Biggest Firms

One of the most noticeable trends is to increase the integration of green and sustainable design principles. In their designs, the biggest architecture companies in the USA are inventing innovative approaches to energy-efficient systems, eco-friendly construction, and green roofs. 

As well as combining commercial, residential, and public spaces into cohesive environments, another trend is the embrace of mixed-use development.

3. Future Challenges and Opportunities

To navigate several challenges, large architecture firms need to look ahead and also to test the creativity and ability of architects. 

There is a need to balance aesthetic goals with sustainable and functional outcomes. As in green building materials and technologies, the push towards sustainability opens new avenues for innovation and inspiration.


Across the country and worldwide, companies like HOK, Skidmore, Gensler, Owings & Merrill (SOM), Kohn Pedersen Fox Associates (KPF), Perkins & Will, HDR, Jacobs, and Stantec play an essential role in defining not only skyline but also functional and cultural aspects of suburban and urban environments. 

Moreover, to set new standards for the industry, these firms are at the forefront of innovative design techniques, advanced technologies in their projects, and integrating sustainable practices.

In addition, the future of architecture in the USA appears to be on a route toward more sustainable, technologically integrated, and adaptable practices. 

Moreover, as the world faces ongoing and new challenges that remain essential to our collective future, the role of architecture has become even more critical in solving these issues. 

Lastly, architectural trends will build new possibilities for creativity, innovation, and designs in the Future, as the main focus will be energy-efficient, sustainable, and eco-friendly buildings.


Q. What are the biggest architecture companies in the USA?

In the USA, some of the largest architecture companies are such as Perkins and Will, HKS Architecture, Gensler, HDR Architecture, and Skidmore, Owings & Merrill (SOM).  

Q. How do the architecture companies differentiate themselves from the smaller firms?

Architecture companies have specialized teams in various aspects, such as urban planning, sustainability, and interior design. Yet additionally, on the grand scale, larger architecture companies have more resources that allow them to tackle complex projects. 

Q. Do these architecture companies prioritize sustainability in their designs?

These leading architecture companies place a strong emphasis on sustainable design practices. Whereas techniques used in their projects include energy-efficient systems, eco-friendly materials, and sustainable building techniques as well and these companies are at the forefront of incorporating green principles into their designs.




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