With the green building movement now in its second decade, Giants 300 firms have made sustainability comparable to breathing. They do it automatically.
New this year: charts showing the total number of green accredited staff—in addition to LEED APs and LEED Green Associates, the total includes Certified Energy Auditors and Managers, Certified Sustainable Building Advisors, Green Advantage Certified Professionals, Green Globes Assessors and Professionals, Green Roof Professionals, and High-Performance Building Design Professionals.
Note: An AEC professional who is, for example, both a LEED AP and a CEM would be counted in both categories.
Below, you’ll find rankings of green accredited professionals as a percentage of total employees in the firm. We did this to recognize smaller firms that have a high percentage of green-certified staff. +
TOP 10 GREEN BUILDING ARCHITECTURE FIRMS
Rank | Company | 2011 Green Revenue ($) |
1 | Gensler | 392,000,000 |
2 | Skidmore, Owings & Merrill | 165,750,000 |
3 | HOK | 164,680,868 |
4 | HDR Architecture | 137,120,000 |
5 | Perkins+Will | 131,350,000 |
6 | HKS | 119,325,668 |
7 | NBBJ | 106,167,000 |
8 | ZGF Architects | 75,600,000 |
9 | HNTB Architecture | 62,139,956 |
10 | RTKL Associates | 60,000,000 |
TOP 10 GREEN BUILDING ENGINEERING FIRMS
Rank | Company | 2011 Green Revenue ($) |
1 | Stantec | 189,400,000 |
2 | URS Corp. | 137,048,000 |
3 | AECOM Technology Corp. | 118,000,000 |
4 | Jacobs | 102,496,836 |
5 | Arup | 60,960,000 |
6 | KPFF Consulting Engineers | 50,000,000 |
7 | Burns & McDonnell | 43,747,479 |
8 | Syska Hennessy Group | 43,150,000 |
9 | WSP USA | 34,500,000 |
10 | Parsons Brinckerhoff | 34,400,000 |
TOP 10 GREEN BUILDING CONSTRUCTION FIRMS
Rank | Company | 2011 Green Revenue ($) |
1 | Turner Corporation, The | 4,540,280,000 |
2 | URS Corp. | 3,875,000,000 |
3 | Clark Group | 2,324,000,000 |
4 | Balfour Beatty US | 2,137,850,000 |
5 | Gilbane Building Co. | 2,085,018,000 |
6 | Whiting-Turner Contracting Co., The | 1,911,396,378 |
7 | PCL Construction Enterprises | 1,730,300,000 |
8 | Hensel Phelps Construction | 1,476,940,000 |
9 | Holder Construction | 1,061,000,000 |
10 | Barton Malow Co. | 1,005,440,388 |
TOP 10 GREEN ACCREDITED STAFF AT ARCHITECTURE FIRMS
Rank | Company | 2011 Green Accredited Staff |
1 | Gensler | 1211 |
2 | Perkins+Will | 986 |
3 | HOK | 854 |
4 | HDR Architecture | 802 |
5 | Cannon Design | 397 |
6 | SmithGroupJJR | 367 |
7 | HKS, Inc. | 342 |
8 | IBI Group | 313 |
9 | RTKL Associates | 242 |
10 | Skidmore, Owings & Merrill | 235 |
TOP 10 GREEN ACCREDITED STAFF AT ENGINEERING FIRMS
Rank | Company | 2011 Green Accredited Staff |
1 | AECOM Technology Corp. | 914 |
2 | Stantec | 664 |
3 | Jacobs | 559 |
4 | URS Corp. | 501 |
5 | Burns & McDonnell | 272 |
6 | Arup | 233 |
7 | Parsons Brinckerhoff | 223 |
8 | WSP USA | 200 |
9 | Clark Nexsen | 191 |
10 | Dewberry | 178 |
TOP 10 GREEN ACCREDITED STAFF AT CONSTRUCTION FIRMS
Rank | Company | 2011 Green Accredited Staff |
1 | Turner Corporation, The | 1251 |
2 | Jones Lang LaSalle | 1250 |
3 | Gilbane Building Co. | 481 |
4 | Balfour Beatty US | 446 |
5 | McCarthy Holdings | 407 |
6 | DPR Construction | 399 |
7 | JE Dunn Construction | 390 |
8 | Clark Group | 355 |
9 | PCL Construction Enterprises | 336 |
10 | Hensel Phelps Construction | 325 |
Related Stories
| Aug 2, 2016
Top 130 Green Building Architecture Firms
Gensler, Stantec, and HOK top Building Design+Construction’s annual ranking of the nation’s largest green building sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
Architects | Aug 2, 2016
Bradley Lukanic named CannonDesign's CEO
In his new role, Lukanic takes helm of an experienced leadership team crafting and achieving optimal short- and long-term strategies and business outcomes
| Aug 1, 2016
K-12 SCHOOL GIANTS: In a new era of K-12 education, flexibility is crucial to design
Space flexibility is critical to classroom design. Spaces have to be adaptable, even allowing for drastic changes such as a doubling of classroom size.
| Jul 29, 2016
AIRPORT FACILITIES GIANTS: Airports binge on construction during busy year for travel
Terminal construction will grow by nearly $1 billion this year, and it will keep increasing. Airports are expanding and modernizing their facilities to keep passengers moving.
| Jul 29, 2016
Top 35 Airport Terminal Architecture and A/E Firms
Corgan, HOK, and Gensler top Building Design+Construction’s annual ranking of the nation’s largest airport terminal architecture and A/E firms, as reported in the 2016 Giants 300 Report.
Architects | Jul 28, 2016
Connecting the dots: Architecture and design in a changing world
What do Tesla, Airbnb and Amazon have in common? They’re all shifting the paradigm for quality of life and the built environment, as CallisonRTKL senior associate VP Jayson Lee explains.
| Jul 26, 2016
ENGINEERING GIANTS: Firms continue to push innovation
Trends include 3D printing, modular hospitals, and fluid dampers.
| Jul 26, 2016
Top 80 Architecture/Engineering firms
Stantec, HOK, and Callison RTKL once again top Building Design+Construction's 2016 ranking of the largest architecture/engineering firms in the United States.
| Jul 25, 2016
Top 35 Engineering/Architecture Firms
AECOM, Jacobs, and Thornton Tomasetti head Building Design+Construction's 2016 ranking of the largest engineering/architecture firms in the United States.
| Jul 25, 2016
Top 100 Architecture Firms
Gensler surpasses $1.1 billion in revenue, topping Building Design+Construction’s annual ranking of the nation’s largest architecture firms, as reported in the 2016 Giants 300 Report.