| Rank | Company | 2012 Total Revenue ($) |
| 1 | Fluor | $221,231,200 |
| 2 | Arup | $149,738,587 |
| 3 | Affiliated Engineers | $105,503,000 |
| 4 | WSP USA | $105,362,352 |
| 5 | KPFF Consulting Engineers | $91,000,000 |
| 6 | Syska Hennessy Group | $82,097,502 |
| 7 | Henderson Engineers | $63,485,775 |
| 8 | Smith Seckman Reid | $52,919,312 |
| 9 | KJWW Engineering Consultants | $51,092,154 |
| 10 | Vanderweil Engineers | $50,552,200 |
| 11 | TTG | $49,968,167 |
| 12 | Glumac | $47,967,000 |
| 13 | Bard, Rao + Athanas Consulting Engineers | $41,500,000 |
| 14 | Rolf Jensen & Associates | $40,000,000 |
| 15 | Coffman Engineers | $39,100,000 |
| 16 | Environmental Systems Design | $38,763,000 |
| 17 | Magnusson Klemencic Associates | $37,462,767 |
| 18 | M-E Engineers | $35,400,000 |
| 19 | TLC Engineering for Architecture | $34,295,957 |
| 20 | RMF Engineering Design | $32,300,000 |
| 21 | RDK Engineers | $31,201,000 |
| 22 | Walter P Moore | $29,092,693 |
| 23 | H.F. Lenz | $26,991,500 |
| 24 | Interface Engineering | $25,193,936 |
| 25 | Degenkolb Engineers | $25,127,432 |
| 26 | CCRD Partners | 25,100,000 |
| 27 | Mazzetti | 24,895,804 |
| 28 | Robins & Morton | 24,500,000 |
| 29 | M/E Engineering | 22,687,000 |
| 30 | Aon Fire Protection Engineering | 22,510,728 |
| 31 | Heapy Engineering | 22,116,941 |
| 32 | Sparling | 20,282,073 |
| 33 | Haynes Whaley Associates | 19,907,949 |
| 34 | Newcomb & Boyd | 18,617,195 |
| 35 | KCI Technologies | 18,032,000 |
| 36 | Bridgers & Paxton Consulting Engineers | 16,868,884 |
| 37 | GHT Limited | 16,834,469 |
| 38 | Bala Consulting Engineers | 16,430,000 |
| 39 | French & Parrello Associates | 15,903,300 |
| 40 | ThermalTech Engineering | 15,500,000 |
| 41 | Joseph R. Loring & Associates | 15,000,000 |
| 42 | KLH Engineers | 14,072,830 |
| 43 | Dunham Associates | 14,000,000 |
| 44 | Wallace Engineering | 13,350,000 |
| 45 | P2S Engineering | 12,962,044 |
| 46 | Karpinski Engineering | 12,076,943 |
| 47 | Peter Basso Associates | 11,016,000 |
| 48 | Rist-Frost-Shumway Engineering | 9,300,000 |
| 49 | CTLGroup | 9,000,000 |
| 50 | Allen & Shariff | 8,500,000 |
| 51 | Wick Fisher White | 8,126,951 |
| 52 | Brinjac Engineering | 6,890,645 |
| 53 | OLA Consulting Engineers | 5,500,000 |
| 54 | Eaton Energy Solutions | 4,430,095 |
| 55 | Kamm Consulting | 3,681,775 |
| 56 | FBA Engineering | 3,360,000 |
| 57 | Apogee Consulting Group | 3,331,300 |
| 58 | G&W Engineering | 2,408,800 |
| 59 | Total Building Commissioning | 616,878 |
| 60 | Yates Cos., The | 400,000 |
| 61 | Weis Builders | 300,000 |
Related Stories
| Apr 5, 2013
'My BIM journey' – 6 lessons from a BIM/VDC expert
Gensler's Jared Krieger offers important tips and advice for managing complex BIM/VDC-driven projects.
| Apr 5, 2013
Commercial greenhouse will top new Whole Foods store in Brooklyn
Whole Foods and partner Gotham Greens will create a 20,000-sf greenhouse atop one of the retailer's Brooklyn supermarkets. Expected to open this fall, the facility will supply produce to nine Whole Foods stores in metro New York City.
| Apr 5, 2013
Projected cost for Apple's Campus 2 balloons to $5 billion
Campus 2, Apple Inc.'s proposed ring-shaped office facility in Cupertino, Calif., could cost $5 billion to build, according to a report by Bloomberg.
| Apr 5, 2013
Extreme LEGO: Wondrous micro city built out of 200,000 blocks
Master LEGO builder Mike Doyle unveils his latest creation, an out-of-this-world micro city that celebrates peaceful alien contact.
| Apr 3, 2013
AIA CES class: Sealant repairs that last – hybrid sealants for building restoration
It is hard to talk about restoration without talking about sustainability. This two-hour interactive online course discusses the role that restoration can and does play in the arena of sustainability, and specifically the role that sealants play in sustainable design and repair.
| Apr 3, 2013
Construction spending up 20% since 2011, growth will continue, says Gilbane report
The monthly rate of construction spending is up 20% in 24 months and increased in 18 of the last 24 months, which is a good leading indicator for new construction work in Q3-Q4 2013, according to Gilbane's latest Market Conditions in Construction report.
| Apr 2, 2013
6 lobby design tips
If you do hotels, schools, student unions, office buildings, performing arts centers, transportation facilities, or any structure with a lobby, here are six principles from healthcare lobby design that make for happier users—and more satisfied owners.
| Apr 2, 2013
Green building consultant explores the truth about green building performance in new book
A new book from leading sustainability, green building author and expert Jerry Yudelson challenges assumptions about the value of sustainable design and environmentally-friendly buildings.
| Mar 29, 2013
Stanford researchers develop nanophotonic panel that reflects sun's heat out of the atmosphere
Researchers at Stanford University have developed a nanophotonic material that not only reflects sunlight, but actually beams the thermal energy out of the earth's atmosphere.
| Mar 29, 2013
M+W Group acquires LifeTek Solutions in America
The global engineering and construction company M+W Group has announced that their operations in the Americas have acquired 100% ownership of LifeTek Solutions, Inc.
