Companies are ranked according to revenue for design services performed in 2007 in $ millions (*). Those with subsidiaries are indicated by (†). Firms not ranked last year are designated **. Some markets may not add up to 100% due to omission of "other" miscellaneous market category and rounding. NA=Not available.

Key to type of Firm: A=architect; E=engineer; EC=engineer-contractor; AE=architect-engineer; EA=engineer-architect; ENV=environmental; GE=geotechnical engineer; L=landscape architect; P=planner; O=other. Other combinations possible. Firms classified themselves.

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Correctional

Rank	Firm	($ Mil)
1	Hellmuth, Obata & Kassabaum PC (HOK)	4.77
2	Moseley Architects	2.10
3	Crabtree, Rohrbaugh & Associates - Architects	1.15
4	Astorino	1.09
5	Dewberry	0.93

Power

Rank	Firm	($ Mil)
1	Parsons Brinckerhoff	15.63
2	Civil & Environmental Consultants Inc.	6.25
3	Dewberry	4.41
4	Altran	4.13
5	AECOM Technology Corp.	3.29
6	Stantec	3.17
7	Geosyntec Consultants	3.02
8	CSD Engineers	2.04
9	KCI Technologies Inc.	1.00
10	Atkins North America	0.96

Telecommunication

Rank	Firm	($ Mil)
1	Gannett Fleming Inc.	90.94
2	KCI Technologies Inc.	28.00
3	Clark Nexsen PC	2.84
4	Pennoni Associates	2.78
5	Highland Associates	2.43
6	Geo-Technology Associates Inc.	2.28
7	Bala Consulting Engineers Inc.	1.45
8	Dewberry	0.72
9	Michael Baker International	0.60
10	Gensler	0.51

Landscape Architecture

Rank	Firm	($ Mil)
1	Stantec	3.50
2	SmithGroupJJR	3.13
3	Bowman Consulting	2.50
4	Dewberry	2.09
5	Kimley-Horn and Associates Inc.	1.97
6	Ayers Saint Gross	1.73
7	Civil & Environmental Consultants Inc.	1.50
8	Whitman, Requardt & Associates LLP	1.05
9	Clark Nexsen PC	1.00
10	Hellmuth, Obata & Kassabaum PC (HOK)	0.89