May 2015

The Top Design Firms list, published annually, ranks the largest U.S.-based designs firms, both publicly and privately held, based on design-specific revenue.

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More detailed information on the Top List
Top Design Firms Main Rankings

Related Article:
Regional Design Firms Make Steady Market Gains

Click below for earlier editions:
2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008

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Florida

Rank	Firm	($ Mil)
1	AECOM	266.70
2	Atkins North America	103.04
3	Kimley-Horn	102.00
4	RS&H Inc.	101.50
5	HNTB Corp.	92.27
6	WSP | Parsons Brinckerhoff	76.68
7	Cardno	76.21
8	Zachry Group	72.81
9	Stantec	71.44
10	ARCADIS US/RTKL/Callison	63.95
11	Universal Engineering Sciences Inc.	41.48
12	DRMP Inc.	35.15
13	HKS Inc.	34.34
14	Wantman Group Inc.	34.00
15	TLC Engineering for Architecture Inc.	32.13
16	Terracon Consultants Inc.	31.98
17	Gannett Fleming	27.84
18	CPH Inc.	26.61
19	Jones Edmunds	26.45
20	Kisinger Campo & Associates Corp.	25.61

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Georgia

Rank	Firm	($ Mil)
1	AECOM	74.55
2	ARCADIS US/RTKL/Callison	58.07
3	Kimley-Horn	33.02
4	Cardno	25.01
5	Burns & McDonnell	22.40
6	HNTB Corp.	21.46
7	Gensler	20.43
8	Pond & Co.	20.00
9	Terracon Consultants Inc.	19.27
10	Perkins+Will	19.15
11	Cooper Carry Inc.	15.29
12	WSP | Parsons Brinckerhoff	14.75
13	Michael Baker international	14.17
14	Morrison Hershfield	13.57
15	Stevens & Wilkinson	11.98
16	Atkins North America	11.50
17	Stantec	11.39
18	Nova Engineering and Environmental	11.25
19	Dewberry	9.84
20	Affiliated Engineers Inc.	9.04

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North Carolina

Rank	Firm	($ Mil)
1	AECOM	159.40
2	Kimley-Horn	32.98
3	LS3P	29.23
4	Little	28.38
5	ARCADIS US/RTKL/Callison	26.73
6	McKim & Creed Inc.	23.33
7	Perkins+Will	22.46
8	STV	21.27
9	Clark Nexsen	19.80
10	ESP Associates P.A.	19.12
11	HNTB Corp.	18.97
12	Cardno	18.94
13	Stantec	18.05
14	Withers & Ravenel Inc.	18.04
15	Terracon Consultants Inc.	17.12
16	Stewart	16.69
17	KCI Technologies Inc.	15.00
18	Dewberry	14.69
19	RS&H Inc.	14.40
20	Michael Baker international	13.69

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South Carolina

Rank	Firm	($ Mil)
1	AECOM	32.67
2	O'Neal Inc.	26.50
3	LS3P	23.88
4	McMillan Pazdan Smith Architecture	19.29
5	Terracon Consultants Inc.	14.91
6	Michael Baker international	14.65
7	Alliance Consulting Engineers Inc.	10.10
8	Seamon Whiteside	9.72
9	ARCADIS US/RTKL/Callison	9.67
10	ESP Associates P.A.	7.20
11	Stantec	6.82
12	WSP | Parsons Brinckerhoff	6.77
13	Stevens & Wilkinson	6.65
14	Dewberry	6.55
15	Mead & Hunt Inc.	6.52
16	CEMS Engineering/Architecture	6.41
17	Kimley-Horn	5.53
18	WK Dickson & Co.	5.50
19	RMF Engineering Inc.	5.10
20	GEL Engineering LLC	5.07

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General Building

Rank	Firm	($ Mil)
1	AECOM	160.82
2	Kimley-Horn	69.19
3	Perkins+Will	57.87
4	LS3P	50.68
5	Terracon Consultants Inc.	41.57
6	Gensler	40.75
7	Little	37.21
8	RS&H Inc.	30.60
9	TLC Engineering for Architecture Inc.	28.08
10	HKS Inc.	27.77
11	Clark Nexsen	25.91
12	Universal Engineering Sciences Inc.	24.61
13	Stantec	24.44
14	Cooper Carry Inc.	24.16
15	Atkins North America	22.19
16	McMillan Pazdan Smith Architecture	22.08
17	Rule Joy Trammell + Rubio LLC	19.10
18	Pond & Co.	19.00
19	Harvard Jolly Architecture	18.75
20	Stevens & Wilkinson	17.62