| Rank | Company | 2012 Office Revenue ($) |
| 1 | AECOM Technology Corp. | $830,320,000 |
| 2 | Parsons Brinckerhoff | $146,400,000 |
| 3 | Jacobs Engineering Group | $95,180,000 |
| 4 | Burns & McDonnell | $82,020,000 |
| 5 | Thornton Tomasetti | $50,861,467 |
| 6 | Michael Baker Jr. | $50,720,000 |
| 7 | WSP USA | $48,500,162 |
| 8 | Arup | $32,355,607 |
| 9 | Buro Happold Consulting Engineers | $28,720,000 |
| 10 | AKF Group | $26,917,000 |
| 11 | Allen & Shariff | $23,000,000 |
| 12 | Syska Hennessy Group | $22,537,724 |
| 13 | URS Corp. | $22,004,616 |
| 14 | Environmental Systems Design | $19,528,391 |
| 15 | Science Applications International Corp. | $18,346,871 |
| 16 | Dewberry | $16,371,636 |
| 17 | Wiss, Janney, Elstner Associates | $13,850,000 |
| 18 | GHT Limited | $12,944,469 |
| 19 | Glumac | $12,535,000 |
| 20 | Haynes Whaley Associates | $10,928,961 |
| 21 | Magnusson Klemencic Associates | $10,597,664 |
| 22 | Vanderweil Engineers | $10,485,700 |
| 23 | KPFF Consulting Engineers | $10,000,000 |
| 24 | BRPH | $9,800,000 |
| 25 | RDK Engineers | $9,578,000 |
| 26 | Simpson Gumpertz & Heger | $8,500,000 |
| 27 | Clark Nexsen | $6,169,304 |
| 28 | Rolf Jensen & Associates | $6,000,000 |
| 29 | H.F. Lenz | $5,357,000 |
| 30 | H&A Architects & Engineers | $5,239,486 |
| 31 | Joseph R. Loring & Associates | $5,150,000 |
| 32 | Bridgers & Paxton Consulting Engineers | $4,807,632 |
| 33 | ThermalTech Engineering | $3,800,000 |
| 34 | CJL Engineering | $3,521,065 |
| 35 | Smith Seckman Reid | $3,508,905 |
| 36 | STV | $3,505,000 |
| 37 | SSOE Group | $3,380,239 |
| 38 | Newcomb & Boyd | $3,371,710 |
| 39 | Heapy Engineering | $3,362,333 |
| 40 | Sparling | $3,275,463 |
| 41 | TTG | $3,203,930 |
| 42 | Bala Consulting Engineers | $3,160,000 |
| 43 | Walker Parking Consultants | $3,109,222 |
| 44 | M-E Engineers | $3,100,000 |
| 45 | Henderson Engineers | $3,014,367 |
| 46 | Hixson Architecture, Engineering, Interiors | $3,000,000 |
| 47 | TLC Engineering for Architecture | $2,991,691 |
| 48 | Interface Engineering | $2,962,807 |
| 49 | Coffman Engineers | $2,825,000 |
| 50 | Walter P Moore | $2,681,402 |
| 51 | KLH Engineers | $2,600,000 |
| 52 | KJWW Engineering Consultants | $2,352,444 |
| 53 | Karpinski Engineering | $2,179,216 |
| 54 | Aon Fire Protection Engineering | $2,000,000 |
| 55 | Primera Engineers | $1,998,000 |
| 56 | Affiliated Engineers | $1,968,000 |
| 57 | Dunham Associates | $1,750,000 |
| 58 | Spectrum Engineers | $1,745,854 |
| 59 | Peter Basso Associates | $1,700,000 |
| 60 | GRAEF | $1,572,073 |
| 61 | CTLGroup | $1,500,000 |
| 61 | Middough | $1,500,000 |
| 61 | Paulus, Sokolowski and Sartor | $1,500,000 |
| 64 | Degenkolb Engineers | $1,497,172 |
| 65 | Shive-Hattery | $1,480,615 |
| 66 | Wick Fisher White | $1,462,851 |
| 67 | French & Parrello Associates | $1,400,000 |
| 68 | Brinjac Engineering | $1,199,912 |
| 69 | Zak Companies | $1,151,229 |
| 70 | M/E Engineering | $1,134,350 |
| 71 | KCI Technologies | $1,000,000 |
| 71 | OLA Consulting Engineers | $1,000,000 |
| 73 | Kamm Consulting | $947,456 |
| 74 | Mazzetti | $945,119 |
| 75 | Bergmann Associates | $921,000 |
| 76 | Bard, Rao + Athanas Consulting Engineers | $900,000 |
| 77 | Wallace Engineering | $825,000 |
| 78 | CCRD Partners | $700,000 |
| 79 | Eaton Energy Solutions | $613,024 |
| 80 | GRW | $542,150 |
| 81 | G&W Engineering | $450,000 |
| 82 | P2S Engineering | $383,806 |
| 83 | Davis, Bowen & Friedel | $284,349 |
| 84 | Guernsey | $241,535 |
| 85 | Ross & Baruzzini | $225,000 |
| 86 | RMF Engineering Design | $75,000 |
| 87 | Apogee Consulting Group | $59,000 |
| 88 | Total Building Commissioning | $43,810 |
| 89 | Stanley Consultants | $10,107 |
| 90 | FBA Engineering | $10,000 |
Read the Office Sector Giants article
Read BD+C's full Giants 300 Report
Related Stories
| Nov 3, 2010
Chengdu retail center offers a blend of old and new China
The first phase of Pearl River New Town, an 80-acre project in Chengdu, in China’s Wenjiang District, is under way along the banks of the Jiang’an River. Chengdu was at one time a leading center for broadcloth production, and RTKL, which is overseeing the project’s master planning, architecture, branding, and landscape architecture, designed the project’s streets, pedestrian pathways, and bridges to resemble a woven fabric.
| Nov 3, 2010
Rotating atriums give Riyadh’s first Hilton an unusual twist
Goettsch Partners, in collaboration with Omrania & Associates (architect of record) and David Wrenn Interiors (interior designer), is serving as design architect for the five-star, 900-key Hilton Riyadh.
| Nov 3, 2010
Virginia biofuel research center moving along
The Sustainable Energy Technology Center has broken ground in October on the Danville, Va., campus of the Institute for Advanced Learning and Research. The 25,000-sf facility will be used to develop enhanced bio-based fuels, and will house research laboratories, support labs, graduate student research space, and faculty offices. Rainwater harvesting, a vegetated roof, low-VOC and recycled materials, photovoltaic panels, high-efficiency plumbing fixtures and water-saving systems, and LED light fixtures will be deployed. Dewberry served as lead architect, with Lord Aeck & Sargent serving as laboratory designer and sustainability consultant. Perigon Engineering consulted on high-bay process labs. New Atlantic Contracting is building the facility.
| Nov 3, 2010
Dining center cooks up LEED Platinum rating
Students at Bowling Green State University in Ohio will be eating in a new LEED Platinum multiuse dining center next fall. The 30,000-sf McDonald Dining Center will have a 700-seat main dining room, a quick-service restaurant, retail space, and multiple areas for students to gather inside and out, including a fire pit and several patios—one of them on the rooftop.
| Nov 2, 2010
11 Tips for Breathing New Life into Old Office Spaces
A slowdown in new construction has firms focusing on office reconstruction and interior renovations. Three experts from Hixson Architecture Engineering Interiors offer 11 tips for office renovation success. Tip #1: Check the landscaping.
| Nov 2, 2010
Cypress Siding Helps Nature Center Look its Part
The Trinity River Audubon Center, which sits within a 6,000-acre forest just outside Dallas, utilizes sustainable materials that help the $12.5 million nature center fit its wooded setting and put it on a path to earning LEED Gold.
| Nov 2, 2010
A Look Back at the Navy’s First LEED Gold
Building Design+Construction takes a retrospective tour of a pace-setting LEED project.
| Nov 2, 2010
Wind Power, Windy City-style
Building-integrated wind turbines lend a futuristic look to a parking structure in Chicago’s trendy River North neighborhood. Only time will tell how much power the wind devices will generate.
| Nov 2, 2010
Energy Analysis No Longer a Luxury
Back in the halcyon days of 2006, energy analysis of building design and performance was a luxury. Sure, many forward-thinking AEC firms ran their designs through services such as Autodesk’s Green Building Studio and IES’s Virtual Environment, and some facility managers used Honeywell’s Energy Manager and other monitoring software. Today, however, knowing exactly how much energy your building will produce and use is survival of the fittest as energy costs and green design requirements demand precision.
| Nov 2, 2010
Yudelson: ‘If It Doesn’t Perform, It Can’t Be Green’
Jerry Yudelson, prolific author and veteran green building expert, challenges Building Teams to think big when it comes to controlling energy use and reducing carbon emissions in buildings.
