| Top 100 hotel design firms (2007 billings in $ millions)
 | 
      
        |  | Company | Billings
 | 
      
        | 1. | HKS | 81,522,840 | 
      
        | 2. | AECOM Technology Corp. | 76,167,000 | 
      
        | 3. | Gensler | 73,500,000 | 
      
        | 4. | Wimberly Allison Tong & Goo | 64,592,100 | 
      
        | 5. | Arup | 44,000,000 | 
      
        | 6. | Leo A Daly | 26,670,000 | 
      
        | 7. | BBG-BBGM | 22,500,000 | 
      
        | 8. | OZ Architecture | 22,440,000 | 
      
        | 9. | Parsons Brinckerhoff | 21,920,000 | 
      
        | 10. | Jacobs Engineering Group | 19,674,290 | 
      
        | 11. | BLT Architects | 17,290,000 | 
      
        | 12. | X-nth | 17,059,141 | 
      
        | 13. | Smallwood, Reynolds, Stewart, Stewart | 15,999,993 | 
      
        | 14. | Martin Associates Group | 14,924,010 | 
      
        | 15. | Arquitectonica | 14,556,000 | 
      
        | 16. | NBBJ | 14,336,200 | 
      
        | 17. | RMJM | 14,256,000 | 
      
        | 18. | HOK | 14,226,393 | 
      
        | 19. | DeSimone Consulting Engineers | 13,200,000 | 
      
        | 20. | EwingCole | 12,840,000 | 
      
        | 21. | Cuningham Group Architecture | 12,498,353 | 
      
        | 22. | FRCH Design Worldwide | 12,240,000 | 
      
        | 23. | URS Corp. | 12,000,000 | 
      
        | 24. | Hnedak Bobo Group | 11,488,230 | 
      
        | 25. | Vanderweil Engineers | 11,039,802 | 
      
        | 26. | KlingStubbins | 10,800,000 | 
      
        | 27. | Skidmore, Owings & Merrill | 10,240,000 | 
      
        | 28. | PBS&J | 10,077,146 | 
      
        | 29. | Walker Parking Consultants | 10,041,000 | 
      
        | 30. | Ingenium Group | 9,590,000 | 
      
        | 31. | Burt Hill | 9,185,724 | 
      
        | 32. | Thompson, Ventulett, Stainback & Associates | 9,161,230 | 
      
        | 33. | VOA Associates | 8,640,800 | 
      
        | 34. | Flack + Kurtz | 8,480,000 | 
      
        | 35. | TRO Jung|Brannen | 8,336,250 | 
      
        | 36. | BSW International | 7,800,000 | 
      
        | 37. | Walter P Moore | 7,491,547 | 
      
        | 38. | Teng Affiliated Cos. | 6,863,200 | 
      
        | 39. | Adache Group Architects | 6,750,000 | 
      
        | 40. | JMA | 6,470,502 | 
      
        | 41. | Cooper Carry | 6,093,360 | 
      
        | 42. | Jerde Partnership, The | 6,000,000 | 
      
        | 43. | Paulus, Sokolowski and Sartor | 5,816,000 | 
      
        | 44. | Morris Architects | 5,552,200 | 
      
        | 45. | Epstein | 5,430,000 | 
      
        | 46. | KPFF Consulting Engineers | 5,350,000 | 
      
        | 47. | Rolf Jensen & Associates | 4,909,200 | 
      
        | 48. | KKE Architects | 4,760,000 | 
      
        | 49. | Callison | 4,710,000 | 
      
        | 50. | CASCO Diversified | 4,660,000 | 
      
        | 51. | Schirmer Engineering Corp. | 4,569,182 | 
      
        | 52. | Mithun | 4,158,000 | 
      
        | 53. | Stantec | 4,151,443 | 
      
        | 54. | Perkins Eastman | 4,080,000 | 
      
        | 55. | Perkins+Will | 3,400,000 | 
      
        | 56. | Goodwyn Mills and Cawood | 3,319,249 | 
      
        | 57. | M/E Engineering | 3,306,750 | 
      
        | 58. | HLW International | 3,122,200 | 
      
        | 59. | Wiss, Janney, Elstner Associates | 3,050,000 | 
      
        | 60. | Elkus Manfredi Architects | 2,838,563 | 
      
        | 61. | Baskervill | 2,764,606 | 
      
        | 62. | MBH Architects | 2,688,300 | 
      
        | 63. | SmithGroup | 2,670,800 | 
      
        | 64. | Sasaki Associates | 2,550,000 | 
      
        | 65. | MCG Architecture | 2,400,000 | 
      
        | 66. | Simpson Gumpertz & Heger | 2,376,600 | 
      
        | 67. | Zimmer Gunsul Frasca Architects | 2,301,256 | 
      
        | 68. | FXFOWLE Architects | 2,100,000 | 
      
        | 69. | Glumac | 2,086,000 | 
      
        | 70. | Thornton Tomasetti | 2,060,000 | 
      
        | 71. | Kirksey | 2,051,623 | 
      
        | 72. | Weidlinger Associates | 2,000,000 | 
      
        | 73. | Dewberry | 1,960,000 | 
      
        | 74. | Fluor | 1,904,300 | 
      
        | 75. | MulvannyG2 Architecture | 1,857,030 | 
      
        | 76. | DLR Group | 1,816,000 | 
      
        | 77. | STV Group | 1,770,000 | 
      
        | 78. | CB Engineers | 1,693,987 | 
      
        | 79. | Syska Hennessy Group | 1,670,853 | 
      
        | 80. | TLC Engineering for Architecture | 1,665,000 | 
      
        | 81. | Joseph R. Loring & Associates | 1,624,820 | 
      
        | 82. | Studios Architecture | 1,589,806 | 
      
        | 83. | Magnusson Klemencic Associates | 1,509,706 | 
      
        | 84. | Kaplan McLaughlin Diaz | 1,300,000 | 
      
        | 85. | M-E Engineers | 1,216,437 | 
      
        | 86. | Solomon Cordwell Buenz | 1,200,420 | 
      
        | 87. | Graef, Anhalt, Schloemer & Associates | 1,150,000 | 
      
        | 88. | Goetting & Associates | 1,125,000 | 
      
        | 89. | RSP Architects | 1,047,660 | 
      
        | 90. | Omniplan | 960,000 | 
      
        | 91. | PageSoutherlandPage | 884,300 | 
      
        | 92. | DeStefano and Partners | 874,500 | 
      
        | 93. | Fishbeck, Thompson, Carr & Huber | 825,000 | 
      
        | 94. | Environmental Systems Design | 754,290 | 
      
        | 95. | Corgan Associates | 746,000 | 
      
        | 96. | Carrier Johnson | 736,376 | 
      
        | 97. | S/L/A/M Collaborative, The | 679,600 | 
      
        | 98. | Bridgers & Paxton Consulting Engineers | 670,367 | 
      
        | 99. | CJL Engineering | 666,586 | 
      
        | 100. | O'Dea, Lynch, Abbattista Consulting Engineers | 647,460 |