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Rankings reflect comments made in the past 14 days
Rankings reflect comments made in the past 14 days

Top 150 Architecture Firms
Integrated firms dominate architecture practice ranking

By Joann Gonchar, AIA

Just a fraction of U.S. architecture firms are truly large businesses. According to an American Institute of Architects Firms Survey, last conducted in 2003, sole-practitioner offices make up almost one-third of architecture practices. Firms with more than 100 seats make up just 2 percent.

Despite these demographics, RECORD thought its readers would be interested in which firms are the biggest of the big. As we did last year, we have ranked architectural practices on the basis of annual revenue using data gathered by our sister publication, Engineering News-Record, for its own Top 500 Design Firms list.

The chart below is somewhat different from our 2005 list of the largest architect-led firms [RECORD, July 2005, page 78]. Last year's table included only "pure" architecture firms or architecture-prime firms, and we ordered those firms on the basis of total design revenue. Therefore, firms were ranked on the basis of revenue generated not only from architecture, but also from services like engineering, planning, and construction.

By contrast, the 2006 list ranks firms on the basis of revenue derived from architectural services only. However, the table captures many integrated firms with sizable architecture practices. Several of these classify themselves principally as engineering companies.

To participate in the ENR survey, which serves as the basis for this ranking, contact Virgilio Mendoza at (212) 904-6371, or virgilio_mendoza@mcgraw-hill.com.

Companies are ranked according to revenue for architectural services performed in 2005 in $ millions. Firms that responded to Engineering News-Record's annual Top Design Firms survey submitted these revenue figures.

Some markets may not add up to 100 percent due to the omission of other market categories, and rounding. The McGraw-Hill Companies publishes both Architectural Record and ENR.

Key to how firms classify themselves:
A = Architect   AE = Architect-Engineer
P = Planner   AEC = Architect-Engineer-Contractor    EA = Engineer-Architect
Other combinations possible

General building: Commercial buildings, offices, stores, educational facilities, government buildings, medical facilities, hotels, apartments, housing, etc.
Manufacturing: Auto, electronic assembly, textile plants, etc.
Transportation: Airports, bridges, marine facilities, railroads, etc.

 
Firms listed by 2005 architecture revenuesas reported to ENR in its Top 500 Design Firms Survey Firm Type Architecture Rev. Total Rev. Gen. Bldg.    
Total Int'l Design Manuf. Transp.
1 AECOM Technology Corp., Los Angeles, Calif. EA $407.4 $0.0 $2588.0 21% 0% 46%
2 Gensler, San Francisco, Calif. A $398.2 $35.1 $406.4 89% 0% 11%
3 URS, San Francisco, Calif. EAC $348.0 $56.0 $3303.0 16% 3% 32%
4 HOK, St. Louis, Mo. AE $278.3 $90.3 $396.2 93% 0% 7%
5 Perkins+Will, Atlanta, Ga. A $182.8 $21.9 $182.8 100% 0% 0%
6 Skidmore Owings & Merrill LLP, New York, N.Y. AE $172.0 $81.0 $223.0 91% 0% 9%
7 HDR, Omaha, Neb. EA $139.3 $4.3 $670.3 20% 1% 44%
8 HKS, Inc., Dallas, Texas AE $133.4 $7.4 $219.8 100% 0% 0%
9 RTKL Associates Inc., Baltimore, Md. AE $120.4 $32.5 $173.3 97% 0% 0%
10 Callison, Seattle, Wash. A $114.0 $31.0 $114.0 100% 0% 0%
11 Heery International Inc., Atlanta, Ga. AE $109.5 $4.7 $130.9 92% 2% 6%
12 Leo A Daly, Omaha, Neb. AE $106.5 $1.7 $162.1 100% 0% 0%
13 SmithGroup, Detroit, Mich. AE $105.9 $1.0 $131.7 100% 0% 0%
14 Perkins Eastman Architects, New York, N.Y. A $91.0 $8.0 $91.0 100% 0% 0%
15 Cannon Design, Grand Island, N.Y. AE $78.9 $8.4 $102.4 100% 0% 0%
16 Zimmer Gunsul Frasca Partnership, Portland, Ore. AP $77.2 $2.2 $84.0 92% 0% 0%
17 Kohn Pedersen Fox Associates PC, New York, N.Y. A $68.0 $42.0 $88.0 85% 0% 15%
18 HMC Architects, Ontario, Calif. A $64.0 $0.0 $64.0 100% 0% 0%
19 Hillier Architecture, Princeton, N.J. A $62.3 $4.3 $62.3 100% 0% 0%
20 Arquitectonica, Miami, Fla. A $61.2 $18.9 $61.2 100% 0% 0%
21 Corgan Associates Inc., Dallas, Texas A $58.3 $0.3 $62.4 44% 0% 44%
22 Burt Hill, Butler, Pa. AE $55.6 $6.9 $55.6 100% 0% 0%
23 Wimberly Allison Tong & Goo, Honolulu, Hawaii A $51.7 $34.3 $65.9 100% 0% 0%
24 STV Group Inc.,
New York, N.Y.
EA $50.6 $0.0 $215.9 17% 0% 83%
25 Gresham, Smith and Partners, Nashville, Tenn. AE $49.3 $0.3 $90.5 52% 1% 29%
26 Thompson Ventulet Stainback & Assocs. Inc., Atlanta, Ga. A $48.7 $17.1 $56.9 100% 0% 0%
27 CUH2A, Princeton, N.J. AE $47.9 $3.7 $76.2 100% 0% 0%
28 MulvannyG2 Architecture, Bellevue, Wash. A $47.9 $6.6 $47.9 100% 0% 0%
29 DLR Group, Omaha, Neb. AE $47.6 $0.0 $68.0 100% 0% 0%
30 PBK Architects Inc., Houston, Texas A $46.3 $0.0 $46.3 100% 0% 0%
31 NTDSTICHLER Architecture, San Diego, Calif. AE $44.4 $0.0 $44.4 100% 0% 0%
32 Shepley Bulfinch Richardson and Abbott Inc., Boston, Mass. A $42.8 $1.7 $42.8 100% 0% 0%
33 Kaplan/McLaughlin/Diaz, San Francisco, Calif. A $42.0 $7.0 $42.0 100% 0% 0%
34 Perkowitz + Ruth Architects, Long Beach, Calif. A $42.0 $0.0 $42.0 100% 0% 0%
35 Hammel Green & Abrahamson Inc., Minneapolis, Minn. A $41.5 $0.0 $64.7 100% 0% 0%
36 LS3P Associates Ltd., Charleston, S.C. A $41.1 $0.0 $41.1 100% 0% 0%
37 Chong Partners Architecture, San Francisco, Calif. A $40.9 $0.7 $40.9 100% 0% 0%
38 Flad & Associates, Madison, Wis. AE $40.4 $1.8 $47.5 100% 0% 0%
39 Swanke Hayden Connell Architects, New York, N.Y. A $38.0 $18.8 $38.0 100% 0% 0%
40 TranSystems Corp., Kansas City, Mo. EA $37.8 $0.0 $126.8 0% 0% 100%
41 BBG-BBGM, New York, N.Y. A $37.0 $9.3 $37.0 100% 0% 0%
42 HLW International LLP, New York, N.Y. AE $37.0 $3.9 $41.3 100% 0% 0%
43 SHW Group, Dallas, Texas AE $36.7 $0.0 $39.9 100% 0% 0%
44 Elkus Manfredi Architects, Boston, Mass. A $36.5 $0.0 $36.5 100% 0% 0%
45 JMA Architecture Studios, Las Vegas, Nev. A $36.3 $0.0 $36.3 100% 0% 0%
46 Fentress Bradburn Architects Ltd., Denver, Colo. A $36.2 $0.0 $36.2 65% 0% 35%
47 Dewberry, Fairfax, Va. EA $36.0 $0.0 $230.0 36% 0% 37%
48 Vanderweil Engineers, Boston, Mass. E $35.9 $0.0 $47.0 79% 0% 0%
49 Davis Brody Bond LLP, New York, N.Y. A $35.9 $1.0 $35.9 97% 3% 0%
50 Nadel Architects Inc., Los Angeles, Calif. A $35.8 $1.0 $35.8 100% 0% 0%
51 Carter & Burgess, Inc., Fort Worth, Texas EA $35.4 $0.0 $364.0 38% 0% 43%
52 Cuningham Group Architecture PA, Minneapolis, Minn. A $35.0 $1.0 $35.0 100% 0% 0%
53 Ware Malcomb, Irvine, Calif. A $34.7 $0.0 $34.7 92% 8% 0%
54 Gould Evans, Kansas City, Mo. A $34.1 $0.0 $34.1 95% 0% 0%
55 WDG Architecture, Washington, D.C. A $33.8 $0.0 $33.8 100% 0% 0%
56 SchenkelShultz, Fort Wayne, Ind. A $33.7 $0.7 $46.2 86% 0% 14%
57 Niles Bolton Associates Inc., Atlanta, Ga. A $33.4 $1.6 $33.4 100% 0% 0%
58 HNTB Cos., Kansas City, Mo. EA $33.0 $0.4 $483.6 8% 0% 88%
59 Ellerbe Becket, Kansas City, Mo. AE $33.0 $3.0 $50.5 98% 0% 0%
60 Kling, Philadelphia, Pa. AE $33.0 $3.0 $73.0 92% 4% 0%
61 Cooper Carry, Atlanta, Ga. A $32.5 $0.0 $40.5 100% 0% 0%
62 MBH Architects, Alameda, Calif. A $31.7 $0.0 $31.7 100% 0% 0%
63 VOA Associates Inc., Chicago, Ill. ALP $31.5 $0.0 $31.5 100% 0% 0%
64 Beyer Blinder Belle Architects & Planners LLP, New York, N.Y. A $31.3 $0.1 $31.3 91% 0% 4%
65 OWP/P, Chicago, Ill. AE $31.0 $0.2 $35.5 100% 0% 0%
66 Polshek Partnership Architects LLP, New York, N.Y. A $30.4 $0.2 $30.4 100% 0% 0%
67 PageSoutherlandPage, Houston, Texas AE $30.3 $5.7 $46.7 97% 3% 0%
68 Karlsberger Cos., Columbus, Ohio A $30.1 $0.0 $31.7 100% 0% 0%
69 Durrant, Denver, Colo. AE $30.0 $4.0 $38.0 100% 0% 0%
70 Einhorn Yaffee Prescott, Albany, N.Y. AE $29.7 $3.0 $42.7 100% 0% 0%
71 Solomon Cordwell Buenz, Chicago, Ill. A $29.5 $0.1 $29.5 97% 0% 3%
72 Opus Group, Minnetonka, Minn. AE $29.3 $0.2 $39.0 100% 0% 0%
73 Harley Ellis Devereaux, Southfield, Mich. AE $29.2 $0.0 $64.9 98% 0% 2%
74 Pei Cobb Freed & Partners Architects LLP, New York, N.Y. A $29.1 $7.7 $29.1 100% 0% 0%
75 Rafael Vinoly Architects PC, New York, N.Y. A $28.6 $7.6 $28.6 100% 0% 0%
76 CO Architects, Los Angeles, Calif. A $28.5 $0.0 $28.5 100% 0% 0%
77 TRO/The Ritchie Organization, Newton, Mass. AE $28.0 $0.9 $34.8 100% 0% 0%
78 RBB Architects Inc., Los Angeles, Calif. A $27.9 $0.0 $27.9 100% 0% 0%
79 Morris Architects, Houston, Texas A $27.7 $0.4 $27.7 100% 0% 0%
80 KKE Architects Inc., Minneapolis, Minn. A $27.2 $0.0 $27.2 100% 0% 0%
81 Looney Ricks Kiss Architects, Inc., Memphis, Tenn. A $27.1 $0.1 $27.1 100% 0% 0%
82 The S/L/A/M Collaborative Inc., Glastonbury, Conn. AE $26.8 $0.6 $26.8 93% 0% 0%
83 BRPH Cos. Inc., Melbourne, Fla. AE $26.0 $0.0 $28.5 93% 7% 0%
84 Fanning/Howey Associates Inc., Celina, Ohio AE $25.8 $0.0 $39.7 96% 0% 1%
85 Ballinger, Philadelphia, Pa. AE $25.0 $0.0 $28.0 100% 0% 0%
86 Tsoi/Kobus & Assocs. Inc., Cambridge, Mass. A $25.0 $0.0 $25.0 26% 0% 0%
87 RNL, Denver, Colo. AE $24.5 $4.4 $30.8 100% 0% 0%
88 Northwest Architectural Co., Seattle, Wash. AE $24.1 $0.0 $24.1 95% 0% 0%
89 JCJ Architecture,
Hartford, Conn.
A $23.6 $0.2 $39.2 100% 0% 0%
90 Dekker/Perich/Sabatini Ltd., Albuquerque, N.M. A $23.5 $0.0 $23.5 100% 0% 0%
91 H+L Architecture,
Denver, Colo.
A $23.3 $0.0 $23.3 100% 0% 0%
92 Studios Architecture, San Francisco, Calif. A $23.3 $2.7 $23.3 100% 0% 0%
93 BSW International Inc.,
Tulsa, Okla.
AE $23.3 $0.0 $23.3 100% 0% 0%
94 EwingCole, Philadelphia, Pa. AE $22.7 $0.3 $50.1 85% 0% 0%
95 Michael Baker Corp., Moon Township, Pa. EA $22.4 $0.0 $325.3 8% 0% 44%
96 Weidlinger Associates, New York, N.Y. E $22.1 $3.6 $54.6 86% 0% 14%
97 BHDP Architecture, Cincinnati, Ohio A $21.5 $0.0 $21.5 94% 0% 0%
98 Astorino, Pittsburgh, Pa. AE $21.0 $0.0 $26.0 100% 0% 0%
99 Marnell Corrao Associates, Inc., Las Vegas, Nev. A $20.8 $0.2 $20.8 100% 0% 0%
100 Odell Associates Inc., Charlotte, N.C. AE $20.8 $0.0 $26.0 96% 0% 4%
101 Steffian Bradley Architects, Boston, Mass. A $20.6 $4.5 $20.6 100% 0% 0%
102 BSA LifeStructures, Indianapolis, Ind. AE $20.6 $0.0 $44.7 100% 0% 0%
103 Carrier Johnson, San Diego, Calif. A $20.6 $0.0 $22.0 100% 0% 0%
104 FKP Architects Inc., Houston, Texas A $20.1 $0.0 $23.2 100% 0% 0%
105 Westlake Reed Leskosky, Cleveland, Ohio AE $19.5 $0.0 $19.5 100% 0% 0%
106 ASCG Inc., Anchorage, Alaska EA $19.3 $0.0 $92.3 27% 0% 38%
107 Highland Associates Ltd. Architecture Engrg. Interior Design, Clarks Summit, Pa. AE $19.3 $0.0 $23.8 97% 3% 0%
108 L. Robert Kimball & Associates Inc.,
Ebensburg, Pa.
AE $19.2 $0.0 $58.8 38% 2% 21%
109 S&B Holdings Ltd., Houston, Texas EC $19.2 $0.0 $217.6 0% 0% 5%
110 A. Epstein and Sons International Inc., Chicago, Ill. AE $18.5 $4.5 $42.0 100% 0% 0%
111 EDI Architecture Inc., Houston, Texas AE $18.5 $0.7 $18.5 100% 0% 0%
112 AC Martin Partners, Inc., Los Angeles, Calif. AE $18.1 $0.2 $18.1 89% 0% 0%
113 Moody Nolan Inc., Columbus, Ohio AE $18.1 $0.0 $19.0 95% 0% 5%
114 Bechtel, San Francisco, Calif. EC $18.0 $15.0 $1576.0 1% 0% 8%
115 CTA Architects Engineers, Billings, Mont. AE $17.9 $0.3 $29.6 97% 0% 0%
116 Kirksey, Houston, Texas A $17.7 $0.2 $17.7 81% 0% 0%
117 Stevens & Wilkinson, Atlanta, Ga. AE $17.3 $0.0 $17.3 82% 0% 12%
118 Bermello Ajamil and Partners Inc., Miami, Fla. AE $17.0 $2.8 $32.0 54% 0% 46%
119 Hnedak Bobo Group, Memphis, Tenn. A $16.5 $0.0 $16.5 100% 0% 0%
120 Lord, Aeck & Sargent, Atlanta, Ga. A $16.5 $0.0 $24.5 100% 0% 0%
121 SSOE Inc., Toledo, Ohio AE $16.5 $0.0 $65.9 25% 36% 4%
122 Marshall Erdman & Associates, Madison, Wis. EC $16.3 $0.0 $16.3 100% 0% 0%
123 GreenbergFarrow, Atlanta, Ga. AE $16.0 $0.0 $39.2 100% 0% 0%
124 The Lawrence Group, St. Louis, Mo. A $15.9 $0.0 $19.5 100% 0% 0%
125 Clough Harbour & Associates LLP, Albany, N.Y. E $15.6 $0.0 $89.8 38% 5% 22%
126 Spector Group,
North Hills, N.Y.
A $15.3 $0.0 $16.8 100% 0% 0%
127 Good Fulton & Farrell, Dallas, Texas A $15.3 $0.0 $15.3 100% 0% 0%
128 Johnson Fain, Los Angeles, Calif. O $15.2 $0.8 $15.2 100% 0% 0%
129 Parsons, Pasadena, Calif. EC $15.0 $0.0 $1119.8 16% 2% 29%
130 Langdon Wilson, Los Angeles, Calif. A $14.8 $0.0 $20.9 100% 0% 0%
131 Wallace Roberts & Todd LLC, Philadelphia, Pa. A $14.7 $0.0 $28.7 51% 0% 0%
132 Legat Architects Inc., Waukegan, Ill. A $14.6 $0.0 $14.6 100% 0% 0%
133 Sasaki Associates Inc., Watertown, Mass. A $14.6 $1.0 $50.0 100% 0% 0%
134 Teng & Associates Inc., Chicago, Ill. EA $14.6 $0.0 $59.3 32% 0% 33%
135 Jung/Brannen Assoc., Boston, Mass. A $14.5 $3.5 $14.5 100% 0% 0%
136 The Beck Group, Dallas, Texas A $14.1 $0.0 $14.1 100% 0% 0%
137 3D/I, Houston, Texas A $14.0 $0.0 $14.0 100% 0% 0%
138 TMP Associates Inc., Bloomfield Hills, Mich. AE $14.0 $0.0 $20.8 100% 0% 0%
139 Fletcher-Thompson, Inc., Shelton, Conn. AE $13.1 $0.0 $20.1 100% 0% 0%
140 Cubellis Associates Inc., Boston, Mass. AE $13.0 $0.0 $25.4 99% 1% 0%
141 EI Associates, Cedar Knolls, N.J. AE $13.0 $0.0 $28.5 70% 11% 0%
142 Wank Adams Slavin Associates LLP, New York, N.Y. AE $13.0 $0.0 $13.0 100% 0% 0%
143 Granary Associates, Philadelphia, Pa. A $12.9 $3.3 $14.6 74% 0% 0%
144 DES Architects & Engineers Inc., Redwood City, Calif. A $12.6 $0.0 $17.5 100% 0% 0%
145 Wight & Co., Downers Grove, Ill. AE $12.5 $0.0 $25.4 79% 0% 11%
146 The Louis Berger Group Inc., E. Orange, N.J. EA $11.9 $3.7 $779.7 0% 0% 67%
147 DeStefano + Partners, Chicago, Ill. A $11.8 $1.2 $16.8 94% 0% 6%
148 Urbahn Associates, New York, N.Y. A $11.2 $0.0 $20.2 77% 0% 19%
149 Hayes, Seay, Mattern & Mattern Inc., Roanoke, Va. AE $11.1 $0.0 $79.3 47% 2% 7%
150 The Benham Cos. LLC, Oklahoma City, Okla. EAC $11.1 $0.0 $98.5 44% 11% 11%
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