| Rank |
Company |
2012 Retail Revenue ($) |
| 1 |
Jacobs Engineering Group |
$146,400,000 |
| 2 |
AECOM Technology Corp. |
$118,220,000 |
| 3 |
Henderson Engineers |
$44,677,299 |
| 4 |
URS Corp. |
$41,152,240 |
| 5 |
Parsons Brinckerhoff |
$19,100,000 |
| 6 |
Wiss, Janney, Elstner Associates |
$17,310,000 |
| 7 |
Bergmann Associates |
$13,000,000 |
| 8 |
Wallace Engineering |
$9,250,000 |
| 9 |
Buro Happold Consulting Engineers |
$7,176,000 |
| 10 |
Arup |
$6,574,122 |
| 11 |
KLH Engineers |
$6,500,000 |
| 12 |
Shive-Hattery |
$5,460,111 |
| 13 |
Aon Fire Protection Engineering |
$5,000,000 |
| 14 |
Dunham Associates |
$4,800,000 |
| 15 |
Science Applications International Corp. |
$4,540,119 |
| 16 |
Magnusson Klemencic Associates |
$4,310,779 |
| 17 |
Walker Parking Consultants |
$3,109,222 |
| 18 |
Dewberry |
$2,959,286 |
| 19 |
Coffman Engineers |
$2,630,000 |
| 20 |
Rolf Jensen & Associates |
$2,400,000 |
| 21 |
Simpson Gumpertz & Heger |
$2,300,000 |
| 22 |
BRPH |
$2,190,000 |
| 23 |
AKF Group |
$2,126,000 |
| 24 |
Bala Consulting Engineers |
$2,050,000 |
| 25 |
Hixson Architecture, Engineering, Interiors |
$2,000,000 |
| 25 |
KPFF Consulting Engineers |
$2,000,000 |
| 27 |
RDK Engineers |
$1,988,000 |
| 28 |
KJWW Engineering Consultants |
$1,839,865 |
| 29 |
Davis, Bowen & Friedel |
$1,833,817 |
| 30 |
CTLGroup |
$1,800,000 |
| 30 |
French & Parrello Associates |
$1,800,000 |
| 32 |
Interface Engineering |
$1,650,727 |
| 33 |
WSP USA |
$1,178,606 |
| 34 |
Clark Nexsen |
$1,103,460 |
| 35 |
Thornton Tomasetti |
$1,087,551 |
| 36 |
Middough |
$1,000,000 |
| 37 |
Stanley Consultants |
$964,786 |
| 38 |
SSOE Group |
$953,760 |
| 39 |
TTG |
$891,500 |
| 40 |
TLC Engineering for Architecture |
$835,647 |
| 41 |
H.F. Lenz |
$821,000 |
| 42 |
Wick Fisher White |
$747,679 |
| 43 |
Eaton Energy Solutions |
$738,894 |
| 44 |
GRAEF |
$687,733 |
| 45 |
Glumac |
$604,000 |
| 46 |
OLA Consulting Engineers |
$450,000 |
| 47 |
Spectrum Engineers |
$443,550 |
| 48 |
KCI Technologies |
$400,000 |
| 49 |
Kamm Consulting |
$323,365 |
| 50 |
Sparling |
$301,653 |
| 51 |
M-E Engineers |
$300,000 |
| 52 |
Walter P Moore |
$296,903 |
| 53 |
Allen & Shariff |
$250,000 |
| 54 |
Vanderweil Engineers |
$241,000 |
| 55 |
Karpinski Engineering |
$213,285 |
| 56 |
Barge, Waggoner, Sumner and Cannon |
$200,000 |
| 57 |
Haynes Whaley Associates |
$182,703 |
| 58 |
G&W Engineering |
$150,000 |
| 59 |
Degenkolb Engineers |
$146,590 |
| 60 |
GHT Limited |
$140,000 |
| 60 |
Joseph R. Loring & Associates |
$140,000 |
| 62 |
H&A Architects & Engineers |
$109,974 |
| 63 |
Apogee Consulting Group |
$72,000 |
| 64 |
GRW |
$65,210 |
| 65 |
Guernsey |
$51,330 |
| 66 |
Mazzetti |
$42,931 |
| 67 |
Brinjac Engineering |
$33,140 |
| 68 |
FBA Engineering |
$25,000 |
| 68 |
ThermalTech Engineering |
$25,000 |
| 70 |
Total Building Commissioning |
$21,208 |
| 71 |
Environmental Systems Design |
$17,060 |
