Top 10 Largest Architecture Firms in the World 2020, Biggest Architecture Firms
largest architecture firms

Current State of the Largest Architecture Companies in the World

The global architecture industry continues to grow driven by economic growth and an infusion of government and corporate-funded building projects. Most of the growth is being led by the top 10 largest architecture firms in the world on this list, however, architecture companies ranking outside the top 10 are all enjoying stellar success in the field.  The architecture industry’s revenue is expected to grow at an annualized rate of 2.2% to USD 317 billion over the five years. The largest architecture company in the world is Gensler, which generated USD 1.35 billion in revenue from fees last year. The top 3 biggest architecture firms are then rounded out by Perkins and Will and HKS. This post will break down the top 10 largest architecture firms in the world in 2020, ranked by their revenue numbers. Additionally, the following insights will also be covered.


  • Who are the 100 largest architecture firms in the world?
  • How much is the global architecture industry worth?
  • What are some key global architecture industry stats and trends


BizVibe is already helping the top architecture firms in the world connect. Connect and track the latest news and insights from these companies.

Global Architecture Industry Stats and Trends

  • The architecture industry’s revenue is expected to grow at an annualized rate of 2.2% to USD 317 billion over the five years.
  • 743.702 people are employed in the global Architecture industry.
  • 50% of architectural companies state that data security is one of the factors that prevent them from increased usage of BIM (Building Information Modelling).
  • 82% of BIM users report that AEC firms receive a positive return-on-investment after using BIM. The other 14% report reaching a point of break-even.

Top 10 Largest Architecture Firms in the World by Revenue 2020

Which companies are leading the way for the world’s biggest architecture firms in the world?  This is BizVibe’s complete list of the top 10 largest architecture firms in the world by revenue in 2020.

Largest Architecture Firms in the World by Revenue


Architecture Company

Revenue (USD millions)


Number of Employees

1Gensler1,355,625,836San Francisco, USA6,000
2Perkins and Will607,958,770Chicago, USA2,600
3HKS396,060,463Dallas, USA1,000
4Perkins Eastman261,631,130New York City, USA658
5IBI Group246,400,000Toronto, Canada2,600
6NELSON Worldwide222,608,600Minneapolis, USA1,000
7Corgan191,585,851Dallas, USA658
8ZGF Architects189,555,601Portland, USA588
9NBBJ182,000,000Seattle, USA650
10Kohn Pedersen Fox152,139,000New York City, USA650

1.    Gensler


Ranking number 1 on this list of the top 10 largest architecture firms in the world is Gensler, a global design and architecture firm. Gensler is organized into 16 diverse practice areas covering a broad spectrum of industry sectors, Gensler delivers a range of project types for clients around the world. Gensler is the biggest architecture firm in the world because it generated USD 1.35 billion in revenues last year. Gensler operated offices in 48 cities in 16 countries worldwide, working for clients in over 100 countries. Gensler offers many service areas including architecture, brand design, consulting & real estate, digital experience design, interior design, sustainability, and urban strategies & design.


  • Founded: 1965
  • Gensler Revenue: USD 1,355,625,836 billion
  • Gensler Headquarters: San Francisco, USA
  • Gensler Number of employees: 6,000


Gensler Products and Services


  • Architecture
  • Brand Design
  • Consulting & Real Estate
  • Digital Experience Design
  • Interior Design
  • Sustainability
  • Urban Strategies & Design



2.    Perkins and Will


Ranking 2nd on this list of the top 10 largest architecture firms in the world is Perkins and Will, a global design practice founded in 1935. Perkins and Will is a subsidiary of Lebanon-based Dar Al-Handasah and last year generated USD 607,958,770 million — making it one of the 100 largest architecture firms in the world. Perkins and Will claim to have more Leadership in Energy and Environmental Design (LEED) accredited professionals than any other design firm in North America.


  • Founded: 1935
  • Perkins and Will Revenue: USD 607,958,770 billion
  • Perkins and Will Headquarters: Chicago, USA
  • Perkins and Will Number of employees: 2,600


Perkins and Will Notable Buildings


  • Bridgestone Tower, Nashville, Tennessee
  • Chase Tower (Chicago), Chicago, Illinois
  • The Clare, Chicago, Illinois
  • Concordia International School Shanghai, Shanghai, China
  • Cornell University College of Engineering, Ithaca, New York; the complex of seven buildings in the 1950s, including Upson Hall
  • Crow Island School, Winnetka, Illinois
  • Lake Forest College, buildings in Middle and South Campus, Lake Forest, Illinois
  • Duke University Fuqua School of Business, Durham, North Carolina
  • Florida Atlantic University, Schmidt Biomedical Science Center
  • Fort Collins High School, Fort Collins, Colorado
  • GlenOak High School, Plain Township, Ohio



3.    HKS


HKS ranks 3rd on this list of the best architecture companies in the world. HKS is an American international architecture firm headquartered in Dallas, Texas (USA). HKS is a leading architecture company that employs more than 1000 people, making it one of the largest architectural firms in the United States and has completed services on structures valued more than $69 billion, with more than $12 billion of construction currently underway. Last year HKS generated USD 396,060,463 million in fees — making it one of the top architecture firms in the world in terms of revenue.


  • Founded: 1939
  • HKS Revenue: USD 396,060,463 million
  • HKS Headquarters: Dallas, USA
  • HKS Number of employees: 1,000


HKS Notable Buildings


  • Orlando Health/Orlando Regional Medical Center, Orlando, Florida
  • SoFi Stadium, Inglewood, California
  • AT&T Stadium, Arlington, Texas
  • S. Bank Stadium, Minneapolis, Minnesota
  • FAU Stadium, Boca Raton, Florida
  • Phoenix Children’s Hospital, Phoenix, Arizona
  • University of Texas MD Anderson Cancer Center, Houston, Texas
  • Globe Life Field, Arlington, Texas
  • Mosaic Stadium, Regina, Saskatchewan
  • Bank of America Corporate Center, Charlotte, North Carolina
  • Apogee Stadium, Denton, Texas
  • College Park Center, Arlington, Texas



4.    Perkins Eastman


Ranking 4th on this list of the top 10 largest architecture companies in the world is Perkins Eastman, an international architecture, interior design, urban design, planning, landscape architecture, graphic design, and project management firm. Headquartered in New York City, United States. Perkins Eastman is one of the largest New York-based design firms per Crain’s New York Business, one of the largest architectural firms in the United States. Lats year Perkins Eastman generated USD 261,631,130 million from revenue fees — making it one of the world’s biggest architecture firms.


  • Founded: 1981
  • Perkins Eastman Revenue: USD 261,631,130 million
  • Perkins Eastman Headquarters: New York City, USA
  • Perkins Eastman Number of employees: 658



5.    IBI Group


Ranking 5th on this list of top 10 largest architecture companies in the world by revenue is IBI Group, a Canadian-based international professional services company consulting in the fields of architecture, engineering, planning, landscape architecture, transportation, and technology. IBI Group has over 2,600 employees and more than 60 offices in North America, Europe, Asia, and the Middle East. Last year IBI Group generated USD 246,400,000 million in revenue from fees — making it one of the best architecture firms in the world.


  • Founded: 1974
  • IBI Group Revenue: USD 246,400,000 million
  • IBI Group Headquarters: Toronto, Canada
  • IBI Group Number of employees: 2,600


IBI Group Notable Projects


  • 41 Cooper Square, New York City
  • BC Cancer Research Centre, Vancouver (with Henriquez Partners Architects)
  • Benxi New City, Benxi, China
  • Delta Hotel, Toronto
  • Diamond Ranch High School (executive architect); Pomona, California
  • École secondaire catholique Père-Philippe-Lamarche, Scarborough, Toronto, Ontario
  • Ericsson R&D Complex, Research Triangle Park, North Carolina
  • Evergreen Point Floating Bridge (2016)
  • Franklin High School (Portland, Oregon) renovation
  • Heschel School – Ronald P. Stanton Campus, New York City
  • London 2012 Olympics – Travel demand management program
  • Oceanside Dolphin Hotel, San Diego



6.    NELSON Worldwide


Ranking 6th on this list of the top 10 largest architecture firms in the world is  NELSON Worldwide, an award-winning firm delivering architecture, interior design, graphic design, and brand strategy services that transform all dimensions of the human experience, providing our clients with strategic and creative solutions that positively impact their lives and the environments where they work, serve, play, and thrive.  NELSON Worldwide generated USD 222,608,600 million in revenues last year — making it one of the world’s biggest architecture firms.


  • Founded: 1977
  • NELSON Worldwide Revenue: USD 222,608,600 million
  • NELSON Worldwide Headquarters: Minneapolis, USA
  • NELSON Worldwide Number of employees: 1,000



7.    Corgan


Ranking 7th on our list of the top 10 largest architecture firms in the world is Corgan, a leading architecture and design firm founded over 80 years ago, creates places across the globe where people thrive and clients succeed. Last year Corgan generated USD 191,585,851 million in revenues.


  • Founded: 1938
  • Corgan Revenue: USD 191,585,851 million
  • Corgan Headquarters: Dallas, USA
  • Corgan Number of employees: 658



8.    ZGF Architects


ZGF Architects ranks 8th on our architecture firm ranking. ZGF Architects is an American architectural firm with offices in Portland, Oregon; Seattle, Washington; Los Angeles, California; Washington D.C.; New York, New York; and Vancouver, Canada. The company was founded in 1942 and currently employs over 588 people worldwide. Since 2013, the firm’s managing partner has been Ted Hyman. Last year ZGF Architects generated USD 189,555,601 million in revenue from fees — making it one of the 100 largest architecture firms in the world.


  • Founded: 1942
  • ZGF Architects Revenue: USD 189,555,601 million
  • ZGF Architects Headquarters: Portland, USA
  • ZGF Architects Number of employees: 588



9.    NBBJ


NBBJ ranks 9th on this list of the biggest architecture firms in 2020 by revenue. NBBJ is an American global architecture, planning and design firm with offices in Beijing, Boston, Columbus, Hong Kong, London, Los Angeles, New York, Portland, Pune, San Francisco, Seattle, and Shanghai. NBBJ provides services in architecture, interiors, planning, and urban design, branding, consulting, landscape design, and lighting. Last year NBBJ generated USD 182,000,000 million in revenues.


  • Founded: 1943
  • NBBJ Revenue: USD 182,000,000 million
  • NBBJ Headquarters: Seattle, USA
  • NBBJ Number of employees: 588


NBBJ Notable Projects


  • City of Capitals, Moscow, Russia
  • Doppler, Seattle, Washington
  • Day 1, Seattle, Washington
  • Amazon Spheres, Seattle, Washington
  • Alipay Headquarters, China
  • Samsung Headquarters, San Jose
  • Tencent Headquarters, Chin
  • Alibaba Headquarters, China
  • Rainier Tower, Seattle, Washington
  • Rainier Square Tower, Seattle, Washington



10.  Kohn Pedersen Fox


Rounding out BizVibe’s list of the top 10 largest architecture firms in the world is Kohn Pedersen Fox, an American architecture firm that provides architecture, interior, programming and master planning services for clients in both the public and private sectors. KPF is one of the largest architecture firms in New York City. KPF’s recent works include Roppongi Hills in Tokyo (2003), Unilever House in London (2007), the Mandarin Oriental, Las Vegas (2009), the Stephen M. Ross School of Business in Ann Arbor (2009), the RBC Centre in Toronto (2009), the University of Minnesota Science Teaching and Student Services Center (2010), Centra Metropark in Iselin, New Jersey (2011), the Heron Tower in London (2011) and the Buffalo United States Courthouse (2011). Last year Kohn Pedersen Fox generated USD 152,139,000 million in revenues from fees — making it one of the top architecture firms in the world.


  • Founded: 1976
  • KPF Revenue: USD 152,139,000 million
  • KPF Headquarters: New York City, USA
  • KPF Number of employees: 650


KPF Notable Projects


  • Espirito Santo Plaza, Miami, Florida, USA
  • Ernst & Young Tower, Toronto, Ontario, Canada
  • Floral Court, London, UK
  • Gannett/USA Today Corporate Headquarters McLean, Virginia, USA
  • Guangzhou CTF Finance Centre, Guangzhou, China
  • Hysan Place, Hong Kong
  • International Commerce Centre, Hong Kong
  • Lotte World Tower, Seoul, South Korea
  • Marina Bay Financial Centre, Singapore
  • Museum of Modern Art (MoMA) Expansion and Renovation, Manhattan, New York, US
  • One Jackson Square, Manhattan, New York, USA
  • One Vanderbilt, Manhattan, New York, USA
  • RBC Centre, Toronto, Ontario, Canada
  • Ritz-Carlton Toronto, Toronto, Ontario, Canada
  • Robert H. Jackson United States Courthouse, Buffalo, New York, USA


This is BizVibe’s list of the top 10 largest architecture firms in the world by revenue in 2020. Reach out to one of these companies for your next project on BizVibe


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100 Largest Architecture Firms by Revenue

Here is a complete list of the 100 largest architecture firms in the world in 2020 ranked by revenue.



 Architecture Company

Revenue (USD millions)

2Perkins and Will$607,958,770
4Perkins Eastman$261,631,130
5IBI Group$246,400,000
6NELSON Worldwide$222,608,600
8ZGF Architects$189,555,601
10Kohn Pedersen Fox$152,139,000
11Interior Architects$144,344,671
12HMC Architects$100,304,750
13Elkus Manfredi Architects$92,000,000
14KTGY Architecture + Planning$90,964,254
15Cooper Carry$89,059,502
16Studios Architecture$86,300,000
19Architects Orange$79,600,000
20Solomon Cordwell Buenz$78,962,762
21Hord Coplan Macht$78,640,600
23Cuningham Group Architecture$76,306,401
24Moseley Architects$69,921,462
26Robert A.M. Stern Architects$68,200,000
27Moody Nolan$66,000,000
30Ennead Architects$57,491,982
32Beyer Blinder Belle$53,492,000
33Quinn Evans Architects$50,688,349
35HLW International$47,600,000
36Beck Group, The$46,500,000
37VLK Architects$46,167,000
38LMN Architects$45,920,000
41Ayers Saint Gross$45,381,884
42Diamond Schmitt Architects$45,314,700
43NAC Architecture$44,785,688
44Shepley Bulfinch$44,724,277
45Fentress Architects$44,700,000
46Kirksey Architects$44,366,258
50BHDP Architecture$41,300,244
51Wilson Associates$41,000,000
52MBH Architects$39,750,000
53JCJ Architecture$39,707,537
55Steinberg Hart$38,750,000
56Adrian Smith + Gordon Gill Architecture$37,690,577
57Niles Bolton Associates$37,686,191
59Ted Moudis Associates$36,000,000
60JLG Architects$35,530,960
61Boulder Associates$34,200,000
62Davis Brody Bond$33,980,731
63Array Architects$32,450,000
65CO Architects$30,848,741
66WDG Architecture$30,700,000
67OZ Architecture$30,592,381
68HuntonBrady Architects$30,311,271
69Grimm + Parker Architects$30,290,304
70Rule Joy Trammell + Rubio$30,078,271
72Looney Ricks Kiss$29,500,000
73Miller Hull Partnership*$29,068,000
74HBG Design$29,061,000
76Quattrocchi Kwok Architects$28,700,000
77SLCE Architects$28,000,000
78Macgregor Associates Architects$27,398,715
79Steelman Partners$27,200,000
80Schenkel & Shultz$25,817,044
82orcutt | winslow$24,451,769
83Carrier Johnson + Culture$24,447,000
84Smallwood, Reynolds, Stewart, Stewart & Associates$24,423,646
86Harvard Jolly$23,653,607
87Dattner Architects$23,108,959
88Ziegler Cooper Architects$22,637,283
89FGM Architects$22,133,408
90Taylor Design$21,891,341
91Urbahn Architects$21,888,302
92LRS Architects$21,726,479
93GGLO Design$21,303,467
94Zyscovich Architects$21,111,640
95RBB Architects$19,000,000
96TEG Architects$18,150,018
97GWWO Architects$18,035,162
98Fogarty Finger Architecture$17,902,000
99Champlin Architecture$17,786,704
100ThenDesign Architecture$17,000,000

The Future of the Global Architecture Industry

The current status of economic prosperity is leading to a stellar growth outlook for the industry. Expect the top 10 largest architecture firms in the world to keep dominating this list but any one of the 100 largest architecture firms mentioned on the list above can join the top 10 anytime soon based on the demand for their excellent services.

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