ENR West Top Design Firms By Market Sector 2026

June 2026

The ENR West Top Design Firms list, 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 Design Firms:
View Complete List of Main Rankings

Related Article:
West Coast Design Firms Regain Their Momentum

Click below for earlier editions:
2025 |

Click here for archived ENR California & Northwest top lists.

 

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ENR West Top Design Firms By Market Sector 2026

 

Hospitality

RANK	FIRM	$ MIL.
1	HKS	7.38
2	DLR Group	6.94
3	WSP USA	5.58
4	Salas O’Brien	3.16
5	common arts	3.05
6	Ankrom Moisan Architects Inc.	2.84
7	IMEG	2.50
8	ZGF	2.39
9	AtkinsRéalis	2.08
9	BAR Architects & Interiors	2.08

 

Structural Engineering

RANK	FIRM	$ MIL.
1	HDR	389.63
2	AECOM	209.44
3	Degenkolb Engineers	91.43
4	WSP USA	74.88
5	Moffatt & Nichol	40.06
6	Buehler	25.53
7	STV	23.50
8	Arup US Inc.	21.63
9	David Evans Enterprises Inc.	20.90
10	Walter P Moore	15.59
11	DLR Group	13.50
12	Arcadis North America	11.76
13	Salas O’Brien	9.76
14	Parametrix	7.66
15	Stantec	6.28
16	Kimley-Horn	6.15
17	Bowman Consulting Group Ltd. (Bowman)	5.82
18	Michael Baker International	5.58
19	Cushing Terrell	5.00
20	Kennedy/Jenks Consultants Inc.	4.92

 

Sports/Recreation

RANK	FIRM	$ MIL.
1	AECOM	23.22
2	HNTB Corp.	10.00
3	Kimley-Horn	6.75
4	Stantec	4.59
5	Walter P Moore	3.32
6	DAHLIN Architecture | Planning | Interiors	2.85
7	Langan	2.60
8	Parametrix	2.34
9	Ninyo & Moore, A SOCOTEC Company	2.30
10	ZGF	2.16
11	AtkinsRéalis	2.08
12	NBBJ	1.50
13	Terracon	1.30
14	IMEG	1.20
15	BAR Architects & Interiors	1.13

 

Sewerage/Solid Waste

RANK	FIRM	$ MIL.
1	HDR	107.50
2	Stantec	38.81
3	Kennedy/Jenks Consultants Inc.	37.48
4	Parametrix	32.41
5	WSP USA	31.49
6	Woodard & Curran	28.71
7	Geo-Logic Associates Inc.	24.65
8	Mott MacDonald	14.78
9	AECOM	14.35
10	Kimley-Horn	9.35
11	David Evans Enterprises Inc.	8.40
12	Mark Thomas	8.33
13	BKF	7.63
14	Dewberry	6.10
15	Kleinfelder Inc.	4.40
15	GFT	4.40
17	TRC Cos.	4.02
18	Cannon Corp.	4.00
19	Ninyo & Moore, A SOCOTEC Company	3.28
20	Wood Rodgers Inc.	1.89

 

Water Supply

RANK	FIRM	$ MIL.
1	Stantec	225.99
2	AECOM	199.37
3	HDR	124.93
4	GEI Consultants Inc.	84.72
5	Michael Baker International	41.17
6	GFT	35.50
7	Kleinfelder Inc.	34.27
8	Kennedy/Jenks Consultants Inc.	32.46
9	WSP USA	29.59
10	Parsons	27.40
11	Arcadis North America	24.75
12	Woodard & Curran	21.98
13	Parametrix	20.59
14	BKF	18.92
15	Wood Rodgers Inc.	15.78
16	AtkinsRéalis	11.49
17	Kimley-Horn	8.92
18	TRC Cos.	8.76
19	Cannon Corp.	8.00
20	David Evans Enterprises Inc.	7.90
21	SWCA Environmental Consultants	6.70
22	Ninyo & Moore, A SOCOTEC Company	5.20
23	Mott MacDonald	5.02
24	Terracon	4.70
25	Arup US Inc.	2.84
26	Geo-Logic Associates Inc.	2.45
27	Dewberry	2.26
28	Burns & McDonnell	1.43
29	Bowman Consulting Group Ltd. (Bowman)	1.36
30	R&M Consultants Inc.	1.09

 

MEP Engineering

RANK	FIRM	$ MIL.
1	WSP USA	214.36
2	Salas O’Brien	107.65
3	AECOM	100.54
4	Stantec	81.81
5	Arup US Inc.	76.87
6	PAE Consulting Engineers Inc.	69.47
7	Affiliated Engineers Inc. (AEI)	53.34
8	Interface Engineering Inc.	43.37
9	HDR	27.48
10	Syska Hennessy Group	26.62
11	PBS Engineers Inc.	25.81
12	GFT	22.30
13	DLR Group	20.90
14	Kimley-Horn	19.06
15	SmithGroup	18.13
16	Westwood Professional Services	8.35
17	Parametrix	7.70
18	HKS	6.52
19	Moffatt & Nichol	6.47
20	Dewberry	6.02

 

Telecommunications

RANK	FIRM	$ MIL.
1	WSP USA	35.36
2	Stantec	34.95
3	Arcadis North America	32.46
4	HDR	32.12
5	Salas O’Brien	27.70
6	Kimley-Horn	24.97
7	Arup US Inc.	18.61
8	Woolpert	13.27
9	Kleinfelder Inc.	12.35
9	Corgan	12.35
11	Burns & McDonnell	6.66
12	Langan	6.00
13	SmithGroup	3.21
14	Syska Hennessy Group	2.85
15	Terracon	2.40
16	AECOM	2.06
17	Dewberry	1.80
18	Parsons	1.70
19	Bowman Consulting Group Ltd. (Bowman)	1.68
20	Colliers Engineering & Design	1.22

 

Environmental & Geotechnical Engineering

RANK	FIRM	$ MIL.
1	HDR	382.37
2	Stantec	306.70
3	WSP USA	213.80
4	Kleinfelder Inc.	160.06
5	AECOM	134.28
6	Arcadis North America	114.78
7	SWCA Environmental Consultants	82.19
8	Woodard & Curran	68.25
9	Ninyo & Moore, A SOCOTEC Company	62.43
10	Langan	41.65
11	Parametrix	34.74
12	David Evans Enterprises Inc.	33.80
13	GEI Consultants Inc.	27.11
14	GFT	23.20
15	Geo-Logic Associates Inc.	18.41
16	Arup US Inc.	17.20
17	Michael Baker International	14.56
18	Kennedy/Jenks Consultants Inc.	12.65
19	Moffatt & Nichol	6.45
20	Mott MacDonald	6.32
21	BKF	6.23
22	Bowman Consulting Group Ltd. (Bowman)	4.24
23	R&M Consultants Inc.	3.08
24	Wood Rodgers Inc.	2.95
25	Westwood Professional Services	2.54

 

Retail

RANK	FIRM	$ MIL.
1	Kimley-Horn	47.20
2	PM Design Inc.	20.04
3	Stantec	13.87
4	common arts	10.60
5	Cushing Terrell	9.38
6	Terracon	9.00
7	Michael Baker International	4.35
8	Salas O’Brien	3.71
9	CSHQA Inc.	3.70
10	Kier + Wright	3.54
11	Walter P Moore	3.18
12	IMEG	3.10
13	Atwell LLC	3.04
14	Arcadis North America	2.88
15	Ayres	2.77

 

Entertainment

RANK	FIRM	$ MIL.
1	Kimley-Horn	11.36
2	Stantec	8.32
3	IMEG	8.20
4	JCJ Architecture	4.23
5	BAR Architects & Interiors	2.67
6	Langan	2.00
6	Ninyo & Moore, A SOCOTEC Company	2.00
8	Salas O’Brien	1.76
9	WSP USA	1.22
10	Walter P Moore	0.95

 

Other General Building

RANK	FIRM	$ MIL.
1	Colliers Engineering & Design	33.06
2	Kleinfelder Inc.	32.38
3	David Evans Enterprises Inc.	25.10
4	Woolpert	9.56
5	SmithGroup	4.00
6	Ankrom Moisan Architects Inc.	3.77
7	Treanor	3.62
8	Kier + Wright	2.27
9	Carrier Johnson + Culture	2.05
10	Steinberg Hart	1.62
11	Atwell LLC	1.58
12	Taylor Design	1.56
13	Buehler	1.53
14	Terracon	1.50
15	Cushing Terrell	1.43

 

Other Project Types

RANK	FIRM	$ MIL.
1	David Evans Enterprises Inc.	34.80
2	Woolpert	29.92
3	Westwood Professional Services	23.01
4	Wood Rodgers Inc.	20.44
5	WSP USA	13.22
6	AECOM	11.23
7	Parametrix	10.21
8	SWCA Environmental Consultants	6.54
9	Geo-Logic Associates Inc.	5.38
10	Atwell LLC	5.37
11	Bowman Consulting Group Ltd. (Bowman)	3.47
12	R&M Consultants Inc.	2.15
13	Colliers Engineering & Design	1.42
14	Michael Baker International	1.07
15	GEI Consultants Inc.	1.00

 

Other Disciplines

RANK	FIRM	$ MIL.
1	GEI Consultants Inc.	59.51
2	Arup US Inc.	44.70
3	David Evans Enterprises Inc.	34.80
4	Electrical Consultants Inc.	28.90
5	SmithGroup	22.03
6	Atwell LLC	16.00
7	Kleinfelder Inc.	12.51
8	BAR Architects & Interiors	8.92
9	Geo-Logic Associates Inc.	8.60
10	Parametrix	6.04
11	NBBJ	5.80
12	Wilson & Co., Engineers & Architects	5.78
13	Michael Baker International	4.48
14	Colliers Engineering & Design	3.94
15	ECS Group of Companies	3.77
16	Affiliated Engineers Inc. (AEI)	3.06
17	Walter P Moore	2.72
18	RBB Architects Inc.	2.68
19	R&M Consultants Inc.	2.29
20	Common arts	2.02

 

Green Projects

RANK	FIRM	$ MIL.
1	HDR	225.04
2	WSP USA	138.18
3	Arup US Inc.	131.07
4	Stantec	125.86
5	SmithGroup	120.58
6	AECOM	119.29
7	NBBJ	82.00
8	ZGF	63.58
9	Corgan	57.65
10	CO Architects	54.42
11	Kimley-Horn	50.48
12	HMC Architects	24.88
13	Burns & McDonnell	18.80
14	Steinberg Hart	18.57
15	Syska Hennessy Group	17.73
16	PAE Consulting Engineers Inc.	17.40
17	HKS	16.35
18	RBB Architects Inc.	13.54
19	PBS Engineers Inc.	12.00
20	Affiliated Engineers Inc. (AEI)	10.65

 

Distribution and Warehouses

RANK	FIRM	$ MIL.
1	Kier + Wright	20.16
2	Kimley-Horn	16.60
3	Stantec	10.94
4	Langan	9.96
5	Terracon	8.20
6	WSP USA	3.36
7	IMEG	2.50
8	Ninyo & Moore, A SOCOTEC Company	1.95
9	Michael Baker International	1.91
10	Cannon Corp.	1.20

 

Industrial Process

RANK	FIRM	$ MIL.
1	Langan	15.93
2	Burns & McDonnell	14.20
3	Woodard & Curran	11.06
4	WSP USA	8.31
5	Salas O’Brien	5.43
6	Affiliated Engineers Inc. (AEI)	3.68
7	Haskell	2.42
8	RS&H Inc.	2.21
9	Terracon	2.00
10	Kennedy/Jenks Consultants Inc.	1.82

 

R&D Facilities

RANK	FIRM	$ MIL.
1	Stantec	24.64
2	Affiliated Engineers Inc. (AEI)	20.35
3	CO Architects	12.49
4	ZGF	12.13
5	HDR	10.68
6	BKF	9.53
7	Arup US Inc.	4.61
8	Salas O’Brien	4.51
9	Syska Hennessy Group	4.12
10	SmithGroup	2.85

 

Landscape Architecture

RANK	FIRM	$ MIL.
1	Kimley-Horn	15.93
2	Westwood Professional Services	6.69
3	AECOM	6.68
4	SmithGroup	4.50
5	Stantec	3.97
6	HDR	3.95
7	Mark Thomas	3.32
8	David Evans Enterprises Inc.	3.10
9	Parametrix	2.47
10	Wood Rodgers Inc.	1.92

 

Hazardous Waste

RANK	FIRM	$ MIL.
1	AECOM	193.40
2	Arcadis North America	88.76
3	WSP USA	79.32
4	TRC Cos.	33.78
5	Parsons	25.50
6	Terracon	21.40
7	Burns & McDonnell	6.25
8	Ninyo & Moore, A SOCOTEC Company	4.50
9	Woodard & Curran	4.15
10	Mott MacDonald	4.12

 

Interior Design

RANK	FIRM	$ MIL.
1	HMC Architects	30.49
2	DLR Group	22.40
3	Corgan	10.54
4	Stantec	10.30
5	SmithGroup	10.12
6	Ankrom Moisan Architects Inc.	8.42
7	HDR	8.08
8	ZGF	4.36
9	common arts	3.44
10	Taylor Design	3.40
11	AECOM	3.20
12	DAHLIN Architecture | Planning | Interiors	1.95
13	HKS	1.66
14	Carrier Johnson + Culture	1.05
15	Cushing Terrell	1.00

 

Manufacturing

RANK	FIRM	$ MIL.
1	Stantec	20.97
2	WSP USA	7.10
3	Haskell	6.99
4	Salas O’Brien	6.16
5	Burns & McDonnell	4.88
6	IMEG	3.10
7	Kennedy/Jenks Consultants Inc.	2.90
8	Arcadis North America	2.79
9	Woodard & Curran	2.20
10	HDR	2.08

 

Surveying and Mapping

RANK	FIRM	$ MIL.
1	Mark Thomas	28.46
2	David Evans Enterprises Inc.	26.90
3	BKF	25.84
4	GUIDA	20.10
5	Westwood Professional Services	17.35
6	Michael Baker International	13.58
7	WSP USA	11.07
8	Stantec	10.36
9	AECOM	10.15
10	Wood Rodgers Inc.	9.14
11	Mott MacDonald	8.70
12	Dewberry	6.22
13	R&M Consultants Inc.	6.21
14	Bowman Consulting Group Ltd. (Bowman)	4.40
15	HDR	3.95

 

Petroleum

RANK	FIRM	$ MIL.
1	Stantec	46.79
2	TRC Cos.	39.77
3	Burns & McDonnell	16.88
4	Parsons	15.90
5	GUIDA	8.04
6	Michael Baker International	6.27
7	WSP USA	4.67
8	Kleinfelder Inc.	3.28
9	HDR	3.26
10	SWCA Environmental Consultants	2.11

 

Surveying and Mapping

RANK	FIRM	$ MIL.
1	Mark Thomas	28.46
2	David Evans Enterprises Inc.	26.90
3	BKF	25.84
4	GUIDA	20.10
5	Westwood Professional Services	17.35
6	Michael Baker International	13.58
7	WSP USA	11.07
8	Stantec	10.36
9	AECOM	10.15
10	Wood Rodgers Inc.	9.14
11	Mott MacDonald	8.70
12	Dewberry	6.22
13	R&M Consultants Inc.	6.21
14	Bowman Consulting Group Ltd. (Bowman)	4.40
15	HDR	3.95