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
Construction Costs | Apr 18, 2024
New download: BD+C's April 2024 Market Intelligence Report
Building Design+Construction's monthly Market Intelligence Report offers a snapshot of the health of the U.S. building construction industry, including the commercial, multifamily, institutional, and industrial building sectors. This report tracks the latest metrics related to construction spending, demand for design services, contractor backlogs, and material price trends.
MFPRO+ New Projects | Apr 16, 2024
Marvel-designed Gowanus Green will offer 955 affordable rental units in Brooklyn
The community consists of approximately 955 units of 100% affordable housing, 28,000 sf of neighborhood service retail and community space, a site for a new public school, and a new 1.5-acre public park.
Construction Costs | Apr 16, 2024
How the new prevailing wage calculation will impact construction labor costs
Looking ahead to 2024 and beyond, two pivotal changes in federal construction labor dynamics are likely to exacerbate increasing construction labor costs, according to Gordian's Samuel Giffin.
Healthcare Facilities | Apr 16, 2024
Mexico’s ‘premier private academic health center’ under design
The design and construction contract for what is envisioned to be “the premier private academic health center in Mexico and Latin America” was recently awarded to The Beck Group. The TecSalud Health Sciences Campus will be located at Tec De Monterrey’s flagship healthcare facility, Zambrano Hellion Hospital, in Monterrey, Mexico.
Market Data | Apr 16, 2024
The average U.S. contractor has 8.2 months worth of construction work in the pipeline, as of March 2024
Associated Builders and Contractors reported today that its Construction Backlog Indicator increased to 8.2 months in March from 8.1 months in February, according to an ABC member survey conducted March 20 to April 3. The reading is down 0.5 months from March 2023.
Laboratories | Apr 15, 2024
HGA unveils plans to transform an abandoned rock quarry into a new research and innovation campus
In the coastal town of Manchester-by-the-Sea, Mass., an abandoned rock quarry will be transformed into a new research and innovation campus designed by HGA. The campus will reuse and upcycle the granite left onsite. The project for Cell Signaling Technology (CST), a life sciences technology company, will turn an environmentally depleted site into a net-zero laboratory campus, with building electrification and onsite renewables.
Codes and Standards | Apr 12, 2024
ICC eliminates building electrification provisions from 2024 update
The International Code Council stripped out provisions from the 2024 update to the International Energy Conservation Code (IECC) that would have included beefed up circuitry for hooking up electric appliances and car chargers.
Urban Planning | Apr 12, 2024
Popular Denver e-bike voucher program aids carbon reduction goals
Denver’s e-bike voucher program that helps citizens pay for e-bikes, a component of the city’s carbon reduction plan, has proven extremely popular with residents. Earlier this year, Denver’s effort to get residents to swap some motor vehicle trips for bike trips ran out of vouchers in less than 10 minutes after the program opened to online applications.
Laboratories | Apr 12, 2024
Life science construction completions will peak this year, then drop off substantially
There will be a record amount of construction completions in the U.S. life science market in 2024, followed by a dramatic drop in 2025, according to CBRE. In 2024, 21.3 million sf of life science space will be completed in the 13 largest U.S. markets. That’s up from 13.9 million sf last year and 5.6 million sf in 2022.
Multifamily Housing | Apr 12, 2024
Habitat starts leasing Cassidy on Canal, a new luxury rental high-rise in Chicago
New 33-story Class A rental tower, designed by SCB, will offer 343 rental units.
