| 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
MFPRO+ News | Mar 1, 2024
Housing affordability, speed of construction are top of mind for multifamily architecture and construction firms
The 2023 Multifamily Giants get creative to solve the affordability crisis, while helping their developer clients build faster and more economically.
Multifamily Housing | Feb 29, 2024
Manny Gonzalez, FAIA, inducted into Best in American Living Awards Hall of Fame
Manny Gonzalez, FAIA, has been inducted into the BALA Hall of Fame.
K-12 Schools | Feb 29, 2024
Average age of U.S. school buildings is just under 50 years
The average age of a main instructional school building in the United States is 49 years, according to a survey by the National Center for Education Statistics (NCES). About 38% of schools were built before 1970. Roughly half of the schools surveyed have undergone a major building renovation or addition.
MFPRO+ Research | Feb 28, 2024
New download: BD+C's 2023 Multifamily Amenities report
New research from Building Design+Construction and Multifamily Pro+ highlights the 127 top amenities that developers, property owners, architects, contractors, and builders are providing in today’s apartment, condominium, student housing, and senior living communities.
AEC Tech | Feb 28, 2024
How to harness LIDAR and BIM technology for precise building data, equipment needs
By following the Scan to Point Cloud + Point Cloud to BIM process, organizations can leverage the power of LIDAR and BIM technology at the same time. This optimizes the documentation of existing building conditions, functions, and equipment needs as a current condition and as a starting point for future physical plant expansion projects.
Data Centers | Feb 28, 2024
What’s next for data center design in 2024
Nuclear power, direct-to-chip liquid cooling, and data centers as learning destinations are among the emerging design trends in the data center sector, according to Scott Hays, Sector Leader, Sustainable Design, with HED.
Windows and Doors | Feb 28, 2024
DOE launches $2 million prize to advance cost-effective, energy-efficient commercial windows
The U.S. Department of Energy launched the American-Made Building Envelope Innovation Prize—Secondary Glazing Systems. The program will offer up to $2 million to encourage production of high-performance, cost-effective commercial windows.
AEC Innovators | Feb 28, 2024
How Suffolk Construction identifies ConTech and PropTech startups for investment, adoption
Contractor giant Suffolk Construction has invested in 27 ConTech and PropTech companies since 2019 through its Suffolk Technologies venture capital firm. Parker Mundt, Suffolk Technologies’ Vice President–Platforms, recently spoke with Building Design+Construction about his company’s investment strategy.
Performing Arts Centers | Feb 27, 2024
Frank Gehry-designed expansion of the Colburn School performing arts center set to break ground
In April, the Colburn School, an institute for music and dance education and performance, will break ground on a 100,000-sf expansion designed by architect Frank Gehry. Located in downtown Los Angeles, the performing arts center will join the neighboring Walt Disney Concert Hall and The Grand by Gehry, forming the largest concentration of Gehry-designed buildings in the world.
Construction Costs | Feb 27, 2024
Experts see construction material prices stabilizing in 2024
Gordian’s Q1 2024 Quarterly Construction Cost Insights Report brings good news: Although there are some materials whose prices have continued to show volatility, costs at a macro level are returning to a level of stability, suggesting predictable historical price escalation factors.
