Top Office Sector Engineering Firms [2013 Giants 300 Report]

Rank	Company	2012 Office Revenue ($)
1	AECOM Technology Corp.	$830,320,000
2	Parsons Brinckerhoff	$146,400,000
3	Jacobs Engineering Group	$95,180,000
4	Burns & McDonnell	$82,020,000
5	Thornton Tomasetti	$50,861,467
6	Michael Baker Jr.	$50,720,000
7	WSP USA	$48,500,162
8	Arup	$32,355,607
9	Buro Happold Consulting Engineers	$28,720,000
10	AKF Group	$26,917,000
11	Allen & Shariff	$23,000,000
12	Syska Hennessy Group	$22,537,724
13	URS Corp.	$22,004,616
14	Environmental Systems Design	$19,528,391
15	Science Applications International Corp.	$18,346,871
16	Dewberry	$16,371,636
17	Wiss, Janney, Elstner Associates	$13,850,000
18	GHT Limited	$12,944,469
19	Glumac	$12,535,000
20	Haynes Whaley Associates	$10,928,961
21	Magnusson Klemencic Associates	$10,597,664
22	Vanderweil Engineers	$10,485,700
23	KPFF Consulting Engineers	$10,000,000
24	BRPH	$9,800,000
25	RDK Engineers	$9,578,000
26	Simpson Gumpertz & Heger	$8,500,000
27	Clark Nexsen	$6,169,304
28	Rolf Jensen & Associates	$6,000,000
29	H.F. Lenz	$5,357,000
30	H&A Architects & Engineers	$5,239,486
31	Joseph R. Loring & Associates	$5,150,000
32	Bridgers & Paxton Consulting Engineers	$4,807,632
33	ThermalTech Engineering	$3,800,000
34	CJL Engineering	$3,521,065
35	Smith Seckman Reid	$3,508,905
36	STV	$3,505,000
37	SSOE Group	$3,380,239
38	Newcomb & Boyd	$3,371,710
39	Heapy Engineering	$3,362,333
40	Sparling	$3,275,463
41	TTG	$3,203,930
42	Bala Consulting Engineers	$3,160,000
43	Walker Parking Consultants	$3,109,222
44	M-E Engineers	$3,100,000
45	Henderson Engineers	$3,014,367
46	Hixson Architecture, Engineering, Interiors	$3,000,000
47	TLC Engineering for Architecture	$2,991,691
48	Interface Engineering	$2,962,807
49	Coffman Engineers	$2,825,000
50	Walter P Moore	$2,681,402
51	KLH Engineers	$2,600,000
52	KJWW Engineering Consultants	$2,352,444
53	Karpinski Engineering	$2,179,216
54	Aon Fire Protection Engineering	$2,000,000
55	Primera Engineers	$1,998,000
56	Affiliated Engineers	$1,968,000
57	Dunham Associates	$1,750,000
58	Spectrum Engineers	$1,745,854
59	Peter Basso Associates	$1,700,000
60	GRAEF	$1,572,073
61	CTLGroup	$1,500,000
61	Middough	$1,500,000
61	Paulus, Sokolowski and Sartor	$1,500,000
64	Degenkolb Engineers	$1,497,172
65	Shive-Hattery	$1,480,615
66	Wick Fisher White	$1,462,851
67	French & Parrello Associates	$1,400,000
68	Brinjac Engineering	$1,199,912
69	Zak Companies	$1,151,229
70	M/E Engineering	$1,134,350
71	KCI Technologies	$1,000,000
71	OLA Consulting Engineers	$1,000,000
73	Kamm Consulting	$947,456
74	Mazzetti	$945,119
75	Bergmann Associates	$921,000
76	Bard, Rao + Athanas Consulting Engineers	$900,000
77	Wallace Engineering	$825,000
78	CCRD Partners	$700,000
79	Eaton Energy Solutions	$613,024
80	GRW	$542,150
81	G&W Engineering	$450,000
82	P2S Engineering	$383,806
83	Davis, Bowen & Friedel	$284,349
84	Guernsey	$241,535
85	Ross & Baruzzini	$225,000
86	RMF Engineering Design	$75,000
87	Apogee Consulting Group	$59,000
88	Total Building Commissioning	$43,810
89	Stanley Consultants	$10,107
90	FBA Engineering	$10,000