| TOP 70 OFFICE ENGINEERING FIRMS | ||
| Rank | Firm | 2015 Revenue |
| 1 | Jacobs | $438,700,000 |
| 2 | AECOM | $285,000,000 |
| 3 | Thornton Tomasetti | $108,284,346 |
| 4 | WSP | Parsons Brinckerhoff | $93,672,000 |
| 5 | Burns & McDonnell | $59,216,746 |
| 6 | Arup | $55,609,224 |
| 7 | Syska Hennessy Group | $35,568,928 |
| 8 | Dewberry | $29,285,538 |
| 9 | Hankins and Anderson | $25,877,629 |
| 10 | Benham Design | $18,638,864 |
| 11 | Environmental Systems Design | $18,338,134 |
| 12 | Glumac | $16,815,183 |
| 13 | KJWW / TTG | $15,501,754 |
| 14 | Wiss, Janney, Elstner Associates | $15,350,000 |
| 15 | Magnusson Klemencic Associates | $12,831,847 |
| 16 | RDK Engineers | $12,490,393 |
| 17 | Vanderweil Engineers | $11,744,500 |
| 18 | Simpson Gumpertz & Heger | $11,031,000 |
| 19 | Jensen Hughes | $10,470,936 |
| 20 | GHT Limited | $10,470,000 |
| 21 | ME Engineers | $7,790,000 |
| 22 | Henderson Engineers | $7,090,542 |
| 23 | Bridgers & Paxton Consulting Engineers | $6,544,088 |
| 24 | H.F. Lenz Company | $6,466,407 |
| 25 | CJL Engineering, Inc. | $6,266,850 |
| 26 | Bala Consulting Engineers | $5,875,000 |
| 27 | Highland Associates | $5,600,000 |
| 28 | Shive-Hattery | $5,393,049 |
| 29 | Walter P Moore | $5,365,243 |
| 30 | Cardno Haynes Whaley | $5,210,293 |
| 31 | Hixson Architecture, Engineering, Interiors | $5,200,000 |
| 32 | Newcomb & Boyd | $4,875,555 |
| 33 | KCI Technologies | $4,700,000 |
| 34 | Pedco E & A Services | $4,250,000 |
| 35 | Ghafari Associates | $4,000,000 |
| 36 | KZF Design | $3,837,266 |
| 37 | Interface Engineering | $3,625,951 |
| 38 | Heapy Engineering | $3,312,190 |
| 39 | Loring Consulting Engineers | $3,300,000 |
| 40 | Wendel | $3,288,770 |
| 41 | Dunham Associates | $3,250,000 |
| 42 | TLC Engineering for Architecture | $3,193,435 |
| 43 | Luckett & Farley | $3,082,431 |
| 44 | DeSimone Consulting Engineers | $3,052,614 |
| 45 | Spectrum Engineers | $2,951,130 |
| 46 | OLA Consulting Engineers | $2,730,338 |
| 47 | Smith Seckman Reid | $2,629,255 |
| 48 | ThermalTech Engineering | $2,500,000 |
| 49 | Walker Parking Consultants | $2,495,000 |
| 50 | Primera Engineers | $2,390,551 |
| 51 | Affiliated Engineers | $2,360,000 |
| 52 | Coffman Engineers | $2,315,629 |
| 53 | KLH Engineers | $2,313,645 |
| 54 | I. C. Thomasson Associates | $2,177,000 |
| 55 | Baird, Hampton & Brown | $2,141,785 |
| 56 | Wick Fisher White | $2,120,000 |
| 57 | Kamm Consulting | $2,090,195 |
| 58 | Karpinski Engineering | $2,000,000 |
| 59 | Core States Group | $1,964,317 |
| 60 | CTLGroup | $1,900,000 |
| 61 | Mazzetti | $1,624,541 |
| 62 | JQ Engineering | $1,575,300 |
| 63 | SSOE Group | $1,450,000 |
| 64 | Graef | $1,355,627 |
| 65 | Davis, Bowen & Friedel | $1,296,783 |
| 66 | Peter Basso Associates | $1,231,603 |
| 67 | M/E Engineering | $1,172,089 |
| 68 | William Tao & Associates | $1,072,324 |
| 69 | Rist-Frost-Shumway Engineering | $1,000,000 |
| 70 | RMF Engineering | $921,800 |
| 71 | JBA Consulting Engineers | $865,525 |
| 72 | Stanley Consultants | $768,109 |
| 73 | dbHMS | $768,000 |
| 74 | G & W Engineering Corp. | $650,167 |
| 75 | Wallace Engineering | $600,000 |
| 76 | BR+A Consulting Engineers | $600,000 |
RETURN TO THE GIANTS 300 LANDING PAGE
Related Stories
| Mar 22, 2013
8 cool cultural projects in the works
A soaring opera center in Hong Kong and a multi-tower music center in Calgary are among the latest cultural projects.
| Mar 22, 2013
Earn $500 as a DOE proposal reviewer
The DOE'S Building Technologies Office this morning put out a call to the AEC industry for expert reviewers for its new energy-efficiency initiative for small commercial buildings, which make up more than 90% of the commercial building stock.
| Mar 21, 2013
Best Firms to Work For: Enermodal Engineering is green to the core
At Enermodal Engineering, there’s only one kind of building—a sustainable one.
| Mar 20, 2013
Architecture Billings Index up again in February
The American Institute of Architects reported the February ABI score was 54.9, up slightly from a mark of 54.2 in January. This score reflects a strong increase in demand for design services.
| Mar 15, 2013
Singapore R&D campus takes top honor in Lab of Year competition
Singapore CREATE R&D campus takes top honor in Lab of Year competition, sponsored by R&D Magazine.
| Mar 14, 2013
Zackery House joins ESD as Group Leader of Technology Consulting Engineering
Zackery House has been named Vice President and Group Leader of Technology Consulting Engineering at ESD (Environmental Systems Design, Inc.), an international leader in the consulting-engineering design of high performance building systems.
| Mar 12, 2013
'World's greenest' office building seeks tenants in Seattle
Superefficient Seattle office building is designed to meet the ambitious goals of the Living Building Challenge.
