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
Office Buildings | Jul 17, 2018
Transwestern report: Office buildings near transit earn 65% higher lease rates
Analysis of 15 major metros shows the average rent in central business districts was $43.48/sf for transit-accessible buildings versus $26.01/sf for car-dependent buildings.
Architects | Jul 10, 2018
AEC marketing fundamentals can still have a role in winning new business
In our Internet-fueled world, it’s easy to get distracted by the latest online tools. But the boring stuff is still important, and you don’t want to lose sight of old-school techniques that are just as persuasive now as they were a few decades ago.
Adaptive Reuse | Jul 9, 2018
Work, park, live: Inside Cincinnati’s parking garage turned lifestyle hotel
The Summit hotel and conference center is a converted parking garage that was once a factory.
Architects | Jun 28, 2018
Designing successful maker spaces
The challenge is to design makerspaces that work, spaces that function as a tool for educators to produce better students.
Architects | Jun 27, 2018
Steven A. Lichtenberger joins Leo A Daly as President
He will lead the firm’s global planning, architecture, engineering, and interiors practice worldwide.
Accelerate Live! | Jun 24, 2018
Watch all 19 Accelerate Live! talks on demand
BD+C’s second annual Accelerate Live! AEC innovation conference (May 10, 2018, Chicago) featured talks on AI for construction scheduling, regenerative design, the micro-buildings movement, post-occupancy evaluation, predictive visual data analytics, digital fabrication, and more. Take in all 19 talks on demand.
Building Team | Jun 22, 2018
What owners should know before choosing the design-build project delivery method
Outside of drawing up a well-written contract, owners often overlook a key attribute that can significantly impact the success of a design-build project, writes Skanska’s Julie Hyson.
Architects | Jun 14, 2018
Chicago Architecture Center sets Aug. 31 as opening date
The Center is located at 111 E. Wacker Drive.
Multifamily Housing | Jun 13, 2018
Multifamily visionaries: KTGY’s extraordinary expectations
KTGY Architecture + Planning keeps pushing the boundaries of multifamily housing design in the U.S., Asia, and the Middle East.
| Jun 11, 2018
Accelerate Live! talk: Regenerative design — When sustainability is not enough
In this 15-minute talk at BD+C’s Accelerate Live! conference (May 10, 2018, Chicago), HMC’s Eric Carbonnier poses the question: What if buildings could actually rejuvenate ecosystems?
