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
Giants 400 | Aug 5, 2015
ENGINEERING GIANTS: Profits, revenue on the rise at U.S. engineering firms as economy sputters back to life
The vast majority of engineering firms are decidedly bullish on revenue growth for 2015, and profitability is nearing a six-year high, according to BD+C's 2015 Giants 300 report.
Giants 400 | Aug 4, 2015
GIANTS 300 REPORT: Top 64 Architecture/Engineering Firms
Stantec, HOK, and Callison RTKL top Building Design+Construction's 2015 ranking of the largest architecture/engineering firms in the United States.
Giants 400 | Aug 4, 2015
GIANTS 300 REPORT: Top 106 Architecture Firms
Gensler, Perkins+Will, and Kohn Pedersen Fox top Building Design+Construction's 2015 ranking of the largest architecture firms in the United States.
Giants 400 | Aug 4, 2015
ARCHITECTURE GIANTS: 21 practice management innovations from architecture Giants
Design firms have gone all out with management innovations in the last year. Check out which ones might work for your firm.
Architects | Aug 4, 2015
Frank Lloyd Wright School of Architecture closer to independent incorporation
The school is halfway to its first fundraising milestone, but is facing a major deadline at end of this month.
Industrial Facilities | Aug 3, 2015
Architect Jacques Rougerie envisions floating city to function as roving laboratory
The manta ray-shaped vessel will be completely self-sustaining, run on marine energy, and produce no waste.
Cultural Facilities | Aug 3, 2015
Funding needed for Washington's Desert Storm memorial
The National Desert Storm Memorial Foundation has a $25 million goal for the project.
Sports and Recreational Facilities | Jul 31, 2015
Zaha Hadid responds to Tokyo Olympic Stadium controversy
“Our warning was not heeded that selecting contractors too early in a heated construction market and without sufficient competition would lead to an overly high estimate of the cost of construction,” said Zaha Hadid in a statement.
Architects | Jul 30, 2015
The Lego Architect: Book offers simple how-to steps for recreating iconic buildings with Legos
The book features famous buildings accompanied with a photograph and drawing of the Lego model of the building, and a list of all the Lego pieces needed to complete a model of the building.
Transit Facilities | Jul 30, 2015
Snøhetta designs ring-shaped cable car station in Italian Alps
In Snøhetta’s design, two cylindrical rings embedded into the existing topography, each at different elevations, will be connected by a cable car. During the minute-long cable car journey, passengers can enjoy views of the city and of the Italian Alps.