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
| Jun 18, 2013
Report: HVAC occupancy sensors could slash building energy demand by 18%
Researchers at the DOE's Pacific Northwest National Laboratory conclude that significant energy savings can be achieved by varying ventilation levels based on the number of people in a given space.
| Jun 18, 2013
Turner report: Activity in urban markets driving construction cost increases
Turner Construction Company announced that the Second Quarter 2013 Turner Building Cost Index – which measures costs in the non-residential building construction market in the United States – has increased to a value of 859. This reflects a 1.18% increase from the First Quarter 2013 and 4.00% yearly increase from the Second Quarter 2012.
| Jun 17, 2013
First look: Austin to get first high-rise since 2003
Developer Cousins Properties broke ground on the 29-story Colorado Tower in downtown Austin, Texas, the city's first high-rise building since Cousins' completed the Frost Bank Tower a decade ago.
| Jun 17, 2013
DOE launches database on energy performance of 60,000 buildings
The Energy Department today launched a new Buildings Performance Database, the largest free, publicly available database of residential and commercial building energy performance information.
| Jun 14, 2013
First look: Callebaut's eye-popping Möbius building for Taichung arts center
French design firm Vincent Callebaut Architectures has released renderings of "Swallow's Nest," an entry in a design competition for a new cultural center, fine arts museum, and public library in Taichung City, Taiwan. The building, based on a Möbius ring, swirls around a central "Endless Patio."
| Jun 14, 2013
Purdue, industry partners test light steel framing for seismic safety
A partnership of leading earthquake engineering researchers from top U.S. and Canadian universities and design professionals from the steel industry have begun the final phase of a three-year project to increase the seismic safety of buildings that use lightweight cold-formed steel for their primary beams and columns.
| Jun 13, 2013
7 great places that represent excellence in environmental design
An adaptive reuse to create LEED Platinum offices, a park that honors veterans, and a grand national plaza are among the seven projects named winners of the 2013 Great Places Awards. The Environmental Design and Research Association recognize professional and scholarly excellence in environmental design, with special attention paid to the relationship between physical form and human activity or experience.
| Jun 13, 2013
Richard Smith joins Cannon Design Science + Technology practice
Cannon Design, an internationally ranked architectural, engineering and planning firm, is pleased to announce Richard Smith has joined the firm as a Principal. Smith joins the leadership team for Cannon Design’s Science + Technology (S&T) practice and will focus on developing strategies for immediate and long-term growth.
| Jun 13, 2013
Winfrey hired as Health and S&T studio head for SmithGroupJJR Dallas
SmithGroupJJR, one of the nation’s largest architecture, engineering and planning firms, has hired David Winfrey, AIA, LEED AP BD+C, as leader of its Health and Science & Technology Studio at its Dallas, Texas office.
| Jun 13, 2013
WorkingBuildings acquires Specialty Operations Solutions
The WorkingBuildings Companies, a leading provider of comprehensive Owner-based solutions for the built environment, announces the acquisition of Specialty Operations Solutions (SOS), a national provider of research and laboratory services.
