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Top 100 office design firms (2007 billings in $ millions) |
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| Company |
Billings |
|
| 1. | Arup | 187,000,000 |
| 2. | Perkins+Will | 85,000,000 |
| 3. | Nelson | 64,386,940 |
| 4. | Gensler | 63,700,000 |
| 5. | Thornton Tomasetti | 49,440,000 |
| 6. | Skidmore, Owings & Merrill | 46,080,000 |
| 7. | AECOM Technology Corp. | 43,524,000 |
| 8. | SmithGroup | 40,062,000 |
| 9. | Parsons Brinckerhoff | 30,140,000 |
| 10. | Syska Hennessy Group | 29,239,931 |
| 11. | Stantec | 29,060,103 |
| 12. | NBBJ | 28,672,400 |
| 13. | HOK | 28,452,786 |
| 14. | RS&H | 22,050,000 |
| 15. | HKS | 22,033,200 |
| 16. | HDR Architecture | 21,200,000 |
| 17. | Burt Hill | 20,667,880 |
| 18. | URS Corp. | 20,000,000 |
| 19. | Jacobs Engineering Group | 19,674,290 |
| 20. | KlingStubbins | 18,000,000 |
| 21. | Swanke Hayden Connell Architects | 17,250,000 |
| 22. | Fluor | 17,138,700 |
| 23. | Rosser International | 16,500,000 |
| 24. | Environmental Systems Design | 16,217,245 |
| 25. | Opus Group, The | 15,804,000 |
| 26. | Zimmer Gunsul Frasca Architects | 15,341,709 |
| 27. | Callison | 14,130,000 |
| 28. | Schirmer Engineering Corp. | 13,707,546 |
| 29. | Corgan Associates | 13,055,000 |
| 30. | Studios Architecture | 12,718,449 |
| 31. | FXFOWLE Architects | 12,600,000 |
| 32. | Smallwood, Reynolds, Stewart, Stewart | 12,307,687 |
| 33. | RMJM | 11,880,000 |
| 34. | RDK Engineers | 11,587,585 |
| 35. | Hammel, Green and Abrahamson | 11,445,000 |
| 36. | Arquitectonica | 10,917,000 |
| 37. | KPFF Consulting Engineers | 10,700,000 |
| 38. | RSP Architects | 10,476,600 |
| 39. | Thompson, Ventulett, Stainback & Associates | 10,125,570 |
| 40. | Elkus Manfredi Architects | 9,934,969 |
| 41. | Ingenium Group | 9,590,000 |
| 42. | Bala Consulting Engineers | 9,384,000 |
| 43. | HLW International | 9,366,600 |
| 44. | Heery International | 9,200,040 |
| 45. | Vanderweil Engineers | 9,199,835 |
| 46. | Wiss, Janney, Elstner Associates | 9,150,000 |
| 47. | DLR Group | 9,080,000 |
| 48. | TLC Engineering for Architecture | 7,770,000 |
| 49. | Ware Malcomb | 7,247,298 |
| 50. | Simpson Gumpertz & Heger | 7,129,800 |
| 51. | Cubellis | 6,987,500 |
| 52. | Kirksey | 6,975,519 |
| 53. | DGA Planning | Architecture | Interiors | 6,917,652 |
| 54. | Teng Affiliated Cos. | 6,863,200 |
| 55. | LPA | 6,744,194 |
| 56. | Rolf Jensen & Associates | 6,545,600 |
| 57. | EwingCole | 6,420,000 |
| 58. | Clark Nexsen | 6,304,922 |
| 59. | Ziegler Cooper Architects | 6,284,850 |
| 60. | Carrier Johnson | 6,136,466 |
| 61. | Weidlinger Associates | 6,000,000 |
| 62. | Gresham, Smith and Partners | 5,943,870 |
| 63. | Benham Cos., The | 5,590,038 |
| 64. | TRO Jung|Brannen | 5,557,500 |
| 65. | Epstein | 5,430,000 |
| 66. | Symmes Maini & McKee Associates | 5,112,500 |
| 67. | Perkins Eastman | 5,100,000 |
| 68. | Leo A Daly | 5,080,000 |
| 69. | Dewberry | 4,900,000 |
| 70. | Morris Architects | 4,828,000 |
| 71. | Albert Kahn Associates | 4,816,000 |
| 72. | Flack + Kurtz | 4,770,000 |
| 73. | KKE Architects | 4,760,000 |
| 74. | Joseph R. Loring & Associates | 4,693,923 |
| 75. | Good Fulton & Farrell | 4,159,620 |
| 76. | Magnusson Klemencic Associates | 4,151,691 |
| 77. | ADD | 4,020,000 |
| 78. | Hixson Architecture, Engineering, Interiors | 3,875,000 |
| 79. | Michaud Cooley Erickson | 3,717,000 |
| 80. | MulvannyG2 Architecture | 3,714,060 |
| 81. | Glumac | 3,576,000 |
| 82. | Smith Seckman Reid | 3,505,000 |
| 83. | Little | 3,486,443 |
| 84. | Cooper Carry | 3,481,920 |
| 85. | Walter P Moore | 3,457,637 |
| 86. | Walker Parking Consultants | 3,347,000 |
| 87. | Birdsall Services Group | 3,050,000 |
| 88. | M-E Engineers | 2,838,354 |
| 89. | Shive-Hattery | 2,717,000 |
| 90. | H.F. Lenz | 2,704,000 |
| 91. | PBK | 2,635,000 |
| 92. | DeStefano and Partners | 2,623,500 |
| 93. | KTA Group | 2,583,750 |
| 94. | Sasaki Associates | 2,550,000 |
| 95. | Looney Ricks Kiss Architects | 2,530,000 |
| 96. | Baskervill | 2,473,595 |
| 97. | Westlake Reed Leskosky | 2,376,500 |
| 98. | Barge Waggoner Sumner and Cannon | 2,300,000 |
| 99. | Harley Ellis Devereaux | 2,220,000 |
| 100. | FKP Architects | 2,182,320 |
Top 100 office design firms
