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The Top 500 Design Firms

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For ENR, it was a watershed year. We recognized individual contributions to the industry by citing people who "Made Their Marks" in 1965. In addition, fresh off the first ENR Top 400 Contractors list in 1964, ENR published its first-ever Top 500 Design Firms list.

The table below shows only rankings and firm name. For complete data from the Top 500 Design Firms list see the following links.

The Top 500 Design Firms
RANK FIRM FIRM TYPE
2015 2014
1
1
AECOM Technology Corp., Los Angeles, Calif.
EAC
2
2
Jacobs, Pasadena, Calif.
AEC
3
4
Fluor Corp., Irving, Texas†
EC
4
5
CH2M HILL, Englewood, Colo.†
EAC
5
9
CB&I, The Woodlands, Texas†
EC
6
6
Amec Foster Wheeler, Tucker, Ga.†
EC
7
7
Tetra Tech Inc., Pasadena, Calif.†
E
8
8
Bechtel, San Francisco, Calif.†
EC
9
11
HDR, Omaha, Neb.†
EA
10
13
Parsons, Pasadena, Calif.†
EC
11
17
Wood Group Mustang Inc., Houston, Texas†
EC
12
10
KBR, Houston, Texas†
EC
13
15
Arcadis U.S./RTKL/Callison, Highlands Ranch, Colo.†
EA
14
14
WorleyParsons Group Inc., Bellaire, Texas†
EC
15
16
Black & Veatch, Overland Park, Kan.†
EC
16
64
WSP | Parsons Brinckerhoff, New York, N.Y.†
EA
17
18
Burns & McDonnell, Kansas City, Mo.
EAC
18
20
Gensler, Washington, D.C.
A
19
22
Stantec Inc., Irvine, Calif.†
EAL
20
21
HNTB Cos., Kansas City, Mo.
EA
21
19
MWH Global, Broomfield, Colo.†
EC
22
23
CDM Smith, Boston, Mass.†
EC
23
27
Cardno, Lone Tree, Colo.†
E
24
110
exp US Services Inc., Chicago, Ill.†
E
25
24
Louis Berger, Morristown, N.J.†
EAP
26
25
CDI Corp., Philadelphia, Pa.†
EA
27
**
GHD Inc., San Francisco, Calif.†
E/ENV
28
32
S&B Engineers and Constructors Ltd. & Affiliates, Houston, Texas†
EC
29
29
Fugro, Houston, Texas†
GE
30
28
Sargent & Lundy LLC, Chicago, Ill.†
E
31
33
Kimley-Horn and Associates Inc., Cary, N.C.
E
32
30
TRC Cos. Inc., Lowell, Mass.†
E
33
26
Michael Baker International, Moon Township, Pa.†
EA
34
34
Bureau Veritas, Fort Lauderdale, Fla.†
E
35
35
Terracon Consultants Inc., Olathe, Kan.†
E
36
31
Hatch Mott MacDonald, Iselin, N.J.†
E
37
36
HOK, St. Louis, Mo.
AE
38
38
Perkins+Will, Chicago, Ill.†
A
39
42
STV Group Inc., New York, N.Y.†
EA
40
40
Leidos, Reston, Va.†
EAC
41
45
Dewberry, Fairfax, Va.†
EA
42
37
Atkins North America, Tampa, Fla.†
EA
43
39
Kleinfelder, San Diego, Calif.†
EA
44
41
Skidmore Owings & Merrill LLP, New York, N.Y.†
AE
45
43
POWER Engineers Inc., Meridian, Idaho
EA
46
46
Brown and Caldwell, Walnut Creek, Calif.†
EC
47
47
Aegion Corp., Chesterfield, Mo.†
EC
48
50
Zachry Group, San Antonio, Texas†
EC
49
49
Gannett Fleming, Harrisburg, Pa.†
EA
50
44
T.Y. Lin International, San Francisco, Calif.†
EA
51
58
Kiewit Corp., Omaha, Neb.†
EC
52
54
HKS Inc., Dallas, Texas
A
53
51
Professional Service Indus. (PSI), Oakbrook Terrace, Ill.
E
54
52
Arup, New York, N.Y.†
E
55
56
Gulf Interstate Engineering Co., Houston, Texas†
EA
56
59
Enercon Services Inc., Kennesaw, Ga.†
EA
57
60
Geosyntec Consultants, Atlanta, Ga.†
E
58
55
Golder Associates Inc., Atlanta, Ga.†
EC
59
61
UniversalPegasus International Inc., Houston, Texas†
E
60
57
CHA Consulting Inc., Albany, N.Y.
EA
61
67
Kohn Pedersen Fox Associates PC, New York, N.Y.†
A
62
66
Greenman-Pedersen Inc., Babylon, N.Y.†
E
63
63
TranSystems Corp., Kansas City, Mo.
EA
64
70
Langan Eng’g and Environmental Services Inc., Elmwood Park, N.J.†
E
65
71
SmithGroupJJR, Detroit, Mich.
AE
66
75
Stanley Consultants Inc., Muscatine, Iowa†
EA
67
62
Cannon Design, Grand Island, N.Y.
AE
68
77
Perkins Eastman, New York, N.Y.†
A
69
79
Carollo Engineers Inc., Walnut Creek, Calif.†
E
70
69
RS&H Inc., Jacksonville, Fla.†
EA
71
85
Thornton Tomasetti Inc., New York, N.Y.
EA
72
76
Vanasse Hangen Brustlin Inc. (VHB), Watertown, Mass.
E
73
87
Rummel Klepper & Kahl LLP, Baltimore, Md.
E
74
84
Woodard & Curran, Portland, Maine†
E
75
94
Johnson, Mirmiran & Thompson Inc., Sparks, Md.†
EA
76
72
Hazen and Sawyer PC, New York, N.Y.
E
77
74
KCI Technologies Inc., Sparks, Md.†
EC
78
65
NBBJ, Seattle, Wash.†
A
79
82
Woods Bagot, New York, N.Y.†
A
80
80
The Babcock & Wilcox Co., Charlotte, N.C.†
EC
81
81
Leo A Daly, Omaha, Neb.†
AE
82
88
Morrison Hershfield, Atlanta, Ga.†
EA
83
86
SCS Engineers, Long Beach, Calif.†
ENV
84
152
EYP Inc., Albany, N.Y.†
AE
85
93
SSOE Group, Toledo, Ohio†
EP
86
103
ECS, Chantilly, Va.†
E
87
92
Moffatt & Nichol, Long Beach, Calif.†
E
88
98
Foth Cos., De Pere, Wis.†
E
89
101
S&ME Inc., Charlotte, N.C.
E
90
115
Hargrove Engineers + Constructors, Mobile, Ala.†
E
91
95
ZGF Architects LLP, Portland, Ore.
A
92
**
Tutor Perini Corp., Sylmar, Calif.
EC
93
97
Surveying And Mapping LLC (SAM), Austin, Texas†
O
94
111
DLR Group, Overland Park, Kan.
AE
95
96
Pennoni, Philadelphia, Pa.
E
96
91
Ecology & Environment Inc., Lancaster, N.Y.†
ENV
97
109
Gresham, Smith and Partners, Nashville, Tenn.
AE
98
106
Volkert Inc., Mobile, Ala.†
E
99
99
Ghafari Associates LLC, Dearborn, Mich.†
EA
100
90
O’Brien & Gere, Syracuse, N.Y.
EC
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