| 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 |
Read the Office Sector Giants article
Read BD+C's full Giants 300 Report
Related Stories
| Jan 3, 2012
Gensler: 'The One Firm Firm'
The giant architecture firm succeeds by giving each of its more than 3,000 employees the opportunity for career growth and professional leadership.
| Jan 3, 2012
Rental Renaissance, The Rebirth of the Apartment Market
Across much of the U.S., apartment rents are rising, vacancy rates are falling. In just about every major urban area, new multifamily rental projects and major renovations are coming online. It may be too soon to pronounce the rental market fully recovered, but the trend is promising.
| Dec 29, 2011
OSHA enforcing new fall hazard standards
OSHA is enforcing its new fall protection standards, as evidenced by a recent crackdown in New York.
| Dec 29, 2011
Decision not to fireproof the new World Trade Center Transportation Hub criticized
Some criticized the decision, reasoning that the structure could be a terrorist target.
| Dec 29, 2011
Seismic safety in question at thousands of California public schools
California regulators responsible for enforcing earthquake safety laws have failed to certify more than 16,000 construction projects in California public schools, increasing the risk that some projects may be unsafe, according to a state audit report.
| Dec 29, 2011
GreenWizard offers cloud-based LEED credit management, assessment
The company recently began offering companies the ability to run assessments for design credits, in addition to traditional product-specific LEED credits.
| Dec 27, 2011
Clayco awarded expansion of Washington University Data Center in St. Louis
Once completed, the new building addition will double the size of the data center which houses sophisticated computer networks that store massive amounts of genomic data used to identify the genetic origins of cancer and other diseases.
| Dec 27, 2011
Ground broken for adaptive reuse project
Located on the Garden State Parkway, the master-planned project initially includes the conversion of a 114-year-old, 365,000-square-foot, six-story warehouse building into 361 loft-style apartments, and the creation of a three-level parking facility.
| Dec 27, 2011
Nova completes $60M Clearwater Conference Center
Comprising an entire city block, the 450,000 sq. ft. facility features over 400 meeting rooms, six theaters, a full-service health spa, complete with an indoor running track, and a commercial kitchen that can efficiently accommodate over 1,000 diners
| Dec 27, 2011
BD+C's Under 40 Leadership Summit update
The two-day Under 40 Leadership Summit continued with a Leadership Style interactive presentation; Great Solutions presentations from Under 40 attendees; the Owner’s Perspective panel discussion; and the Blue Ocean Strategy presentation.
