| Rank | Company | 2012 Office Revenue ($) |
| 1 | Gensler | $462,700,500 |
| 2 | HOK | $128,726,000 |
| 3 | Perkins+Will | $107,951,672 |
| 4 | NBBJ | $64,002,000 |
| 5 | Stantec | $62,500,236 |
| 6 | PageSoutherlandPage | $43,190,000 |
| 7 | Heery International | $39,443,931 |
| 8 | Kohn Pedersen Fox Associates | $38,081,000 |
| 9 | RTKL Associates | $37,474,000 |
| 10 | Hammel, Green and Abrahamson | $37,307,000 |
| 11 | NELSON | $34,453,532 |
| 12 | HDR Architecture | $32,590,000 |
| 13 | SmithGroupJJR | $28,400,000 |
| 14 | IBI Group | $25,433,163 |
| 15 | HLW International | $25,000,000 |
| 16 | RSP Architects | $24,720,000 |
| 17 | EYP | $23,000,000 |
| 18 | Cannon Design | $22,000,000 |
| 19 | Skidmore, Owings & Merrill | $21,802,000 |
| 20 | RNL | $19,548,000 |
| 21 | ZGF Architects | $19,488,790 |
| 22 | Leo A Daly | $19,086,106 |
| 23 | HKS | $18,000,000 |
| 24 | Ziegler Cooper Architects | $16,405,617 |
| 25 | CTA Architects Engineers | $14,609,906 |
| 26 | Perkins Eastman | $14,500,000 |
| 27 | Goettsch Partners | $14,080,000 |
| 28 | Ware Malcomb | $13,336,000 |
| 29 | LPA | $12,460,741 |
| 30 | HNTB Archtecture | $12,457,966 |
| 31 | DLR Group | $11,500,000 |
| 32 | VOA Associates | $11,156,220 |
| 33 | LS3P | $10,956,040 |
| 34 | Swanke Hayden Connell Asrchitects | $10,000,000 |
| 35 | Corgan | $9,955,204 |
| 36 | Kirksey Architecture | $9,941,686 |
| 37 | Cooper Carry | $8,995,996 |
| 38 | WDG Architecture | $8,908,000 |
| 39 | Gresham, Smith and Partners | $8,874,201 |
| 40 | FXFOWLE Architects | $8,293,986 |
| 41 | Wight & Co. | $8,102,200 |
| 42 | Margulies Perruzzi Architects | $7,664,323 |
| 43 | Solomon Cordwell Buenz | $7,500,000 |
| 44 | Sasaki Associates | $7,038,052 |
| 45 | SMMA | Symmes Maini & McKee Associates | $7,000,000 |
| 46 | Kaplan McLaughlin Diaz | $6,868,189 |
| 47 | Cuningham Group Architecture | $6,584,483 |
| 48 | Epstein | $6,318,000 |
| 49 | Little | $6,062,464 |
| 50 | EwingCole | $6,000,000 |
| 51 | S/L/A/M Collaborative, The | $5,232,000 |
| 52 | Environetics | $5,113,485 |
| 53 | Goodwyn, Mills & Cawood | $5,010,000 |
| 54 | Westlake Reed Leskosky | $5,000,000 |
| 55 | Callison | $4,706,375 |
| 56 | Beyer Blinder Belle Architects & Planners | $4,503,766 |
| 57 | Ballinger | $4,271,000 |
| 58 | Smallwood, Reynolds, Stewart, Stewart & Associates | $4,176,376 |
| 59 | Francis Cauffman | $3,952,734 |
| 60 | Moody Nolan | $3,900,000 |
| 61 | Good Fulton & Farrell | $3,860,000 |
| 62 | Mithun | $3,803,000 |
| 63 | KZF Design | $3,679,546 |
| 64 | BBG-BBGM | $3,600,000 |
| 65 | Flad Architects | $3,500,000 |
| 66 | GBBN Architects | $3,300,000 |
| 67 | LMN Architects | $3,061,300 |
| 68 | OZ Architecture | $2,958,128 |
| 69 | Baskervill | $2,897,000 |
| 70 | Hoefer Wysocki Architecture | $2,510,000 |
| 71 | Carrier Johnson + Culture | $2,444,535 |
| 72 | Reynolds, Smith and Hills | $2,180,000 |
| 73 | Rule Joy Trammell + Rubio | $1,850,000 |
| 74 | Fentress Architects | $1,678,370 |
| 75 | Polytech Associates | $1,600,000 |
| 76 | JRS Architect | $1,250,000 |
| 77 | Hoffmann Architects | $1,232,000 |
| 78 | EDI International | $1,214,000 |
| 79 | Nadel | $1,212,861 |
| 80 | Astorino | $1,202,000 |
| 81 | PGAL | $1,150,000 |
| 82 | Perkowitz+Ruth Architects | $1,043,019 |
| 83 | MulvannyG2 Architecture | $994,427 |
| 84 | LARGE Architecture | $766,582 |
| 85 | Albert Kahn Family of Companies | $764,342 |
| 86 | Niles Bolton Associates | $699,342 |
| 87 | DLA Architects | $673,390 |
| 88 | Emersion Design | $578,739 |
| 89 | FGM Architects | $559,250 |
| 90 | Fletcher-Thompson | $380,000 |
| 90 | BLT Architects | $380,000 |
| 92 | Legat Architects | $348,000 |
| 93 | Davis Brody Bond | $342,799 |
| 94 | Hnedak Bobo Group | $332,000 |
| 95 | Morris Architects | $300,000 |
| 96 | NAC|Architecture | $269,373 |
| 97 | Cambridge Seven Associates | $257,000 |
| 98 | FRCH Design Worldwide | $250,000 |
| 99 | WATG / Wimberly Interiors | $245,000 |
| 100 | Harley Ellis Devereaux | $227,000 |
| 101 | BSA LifeStructures | $188,520 |
| 102 | DesignGroup | $168,033 |
| 103 | Omniplan Architects | $155,327 |
| 104 | CASCO | $150,000 |
| 104 | PHX Architecture | $150,000 |
| 106 | SRG Partnership | $120,428 |
| 107 | HMC Architects | $113,111 |
| 108 | TEG Architects - The Estopinal Group | $111,357 |
| 109 | Harvard Jolly Architecture | $111,000 |
| 110 | SLATERPAULL Architects | $101,500 |
| 111 | BBS Architects, Landscape Architects and Engineers | $100,000 |
| 112 | Sherlock, Smith & Adams | $96,000 |
| 113 | Shepley Bulfinch Richardson & Abbott | $95,831 |
| 114 | Fanning/Howey Associates | $40,000 |
| 115 | DJM Architecture | $31,430 |
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