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
Giants 400 | Dec 2, 2020
2020 Airport Sector Giants: Top architecture, engineering, and construction firms in the U.S. airport facilities sector
AECOM, Hensel Phelps, and PGAL top BD+C's rankings of the nation's largest airport sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Nov 29, 2020
Top 40 Engineering Architecture Firms for 2020
Jacobs, AECOM, and Kimley-Horn top the rankings of the nation's largest engineering architecture (EA) firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2020 Giants 400 Report.
Giants 400 | Nov 29, 2020
Top 155 Architecture Firms for 2020
Gensler, Perkins and Will, and HKS Architects top the rankings of the nation's largest architecture firms for nonresidential and multifamily buildings work, as reported in Building Design+Construction's 2020 Giants 400 Report.
Giants 400 | Nov 29, 2020
Top 100 Architecture Engineering Firms for 2020
Stantec, HDR, and HOK head the rankings of the nation's largest architecture engineering (AE) firms for nonresidential and multifamily buildings work, as reported in Building Design+Construction's 2020 Giants 400 Report.
Government Buildings | Nov 25, 2020
New Indiana Toll Road headquarters creates unified environment for staff
New LEED Gold facility consolidates operations for tollway authority.
Architects | Nov 24, 2020
AEC Leaders share lessons from past downturns
Positions of passivity and cost-cutting run counter to the key lessons from AEC leaders who successfully navigated their firms through past market downturns.
Smart Buildings | Nov 20, 2020
The Weekly show: SPIRE smart building rating system, and pickleball court design tips
The November 19 episode of BD+C's The Weekly is available for viewing on demand.
Transportation & Parking Facilities | Nov 13, 2020
BIG and Kilo-designed Pegasus Pod transports first Hyperloop passengers
The pod achieves Hyperloop travel at speeds over 1000km/hour.
Government Buildings | Nov 13, 2020
Tax shortfalls nip government projects in the bud
Federal contracts are proceeding, but states and cities are delaying, deferring, and looking for private investment.
AEC Tech | Nov 12, 2020
The Weekly show: Nvidia's Omniverse, AI for construction scheduling, COVID-19 signage
BD+C editors speak with experts from ALICE Technologies, Build Group, Hastings Architecture, Nvidia, and Woods Bagot on the November 12 episode of "The Weekly." The episode is available for viewing on demand.