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
| May 15, 2014
Paints, coatings, and sealants: 10 new ways to seal the deal
Color-shifting finishes, dry-erase surfaces, and stain-blocking paints are highlighted in this round up of new offerings in paints, coatings, sealants, and finishes.
| May 15, 2014
Biking to work up by 60 percent, according to Census Bureau report
Many U.S. cities are seeing an increase in bicycle commuters, according to new a U.S. Census Bureau report. While bicyclists still account for just 0.6% of all commuters, some of the nation's largest cities have more than doubled their rates since 2000.
| May 15, 2014
'Virtually indestructible': Utah architect applies thin-shell dome concept for safer schools
At $94 a square foot and "virtually indestructible," some school districts in Utah are opting to build concrete dome schools in lieu of traditional structures.
| May 15, 2014
First look: 9/11 Memorial Museum opens to first-responders, survivors, 9/11 families [slideshow]
The 110,000-sf museum is filled with monumental artifacts from the tragedy and exhibits that honor the lives of every victim of the 2001 and 1993 attacks.
| May 14, 2014
New study shows employees aren't happier working in green buildings
People working in buildings certified under LEED’s green building standard appear no more satisfied with their workplace environments than those in conventional buildings, according to new research from the University of California, Berkeley, and the University of Nottingham.
| May 14, 2014
Construction growth looking up: Gilbane Spring 2014 Economic Report
Construction spending for 2014 should finish 6.6% higher than in 2013, with nonresidential work contributing substantially.
| May 14, 2014
Prefab payback: Mortenson quantifies cost and schedule savings from prefabrication techniques
Value-based cost-benefit analysis of prefab approaches on the firm's 360-bed Exempla Saint Joseph Heritage Project shows significant savings for the Building Team.
| May 13, 2014
First look: Nadel's $1.5 billion Dalian, China, Sports Center
In addition to five major sports venues, the Dalian Sports Center includes a 30-story, 440-room, 5-star Kempinski full-service hotel and conference center and a 40,500-square-meter athletes’ training facility and office building.
| May 13, 2014
Drexel University case study report: Green Globes cheaper, faster than LEED
GBI’s Green Globes certification process is significantly less expensive to conduct and faster to complete than LEED certification, says Drexel prof.
| May 13, 2014
Steven Holl's sculptural Institute for Contemporary Art set to break ground at VCU
The facility will have two entrances—one facing the city of Richmond, Va., the other toward VCU's campus—to serve as a connection between "town and gown."
