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
| Dec 2, 2014
Hoffmann Architects announces promotions
The architecture and engineering firm specializing in the rehabilitation of building exteriors announces the promotion of members of its Connecticut staff.
| Dec 2, 2014
SPARK designs urban farming housing for Singapore’s elderly population
The proposal blends affordable retirement housing with urban farming by integrating vertical aquaponic farming and rooftop soil planting into multi-unit housing for seniors.
| Dec 2, 2014
Bjarke Ingels unveils cave-like plan for public square in Battersea Power Station
A Malaysian development consortium is guiding the project, which is meant to mimic the caves of Gunung Mulu National Park in Sarawak, East Malaysia.
| Dec 1, 2014
9 most controversial buildings ever: ArchDaily report
Inexplicable designs. Questionable functionality. Absurd budgeting. Just plain inappropriate. These are some of the characteristics that distinguish projects that ArchDaily has identified as most controversial in the annals of architecture and construction.
| Dec 1, 2014
Skanska, Foster + Partners team up on development of first commercial 3D concrete printing robot
Skanska will participate in an 18-month program with a consortium of partners to develop a robot capable of printing complex structural components with concrete.
| Dec 1, 2014
How public-private partnerships can help with public building projects
Minimizing lifecycle costs and transferring risk to the private sector are among the benefits to applying the P3 project delivery model on public building projects, according to experts from Skanska USA.
High-rise Construction | Dec 1, 2014
ThyssenKrupp develops world’s first rope-free elevator system
ThyssenKrupp's latest offering, named MULTI, will allow several cabins in the same shaft to move vertically and horizontally.
| Nov 29, 2014
20 tallest towers that were never completed
Remember the Chicago Spire? What about Russia Tower? These are two of the tallest building projects that were started, but never completed, according to the Council on Tall Buildings and Urban Habitat. The CTBUH Research team offers a roundup of the top 20 stalled skyscrapers across the globe.
| Nov 26, 2014
USITT Selects Bahrain National Theatre for Honor Award
The Bahrain National Theatre will be recognized with an Honor Award by the United States Institute for Theatre Technology (USITT) in 2015.
| Nov 26, 2014
How the 'maker culture' brings the power of design to life
Most people affiliate the maker culture with metal working, welding, ceramics, glass blowing, painting, and soldering. But it also includes coding and online content creation, writes Gensler’s Douglas Wittnebel.
