The Top 100 Giants
2006 Rank

Firms Headquarters

I.D. Fees (millions)

Work Installed

Design Staff

2005 Rank

Value (millions)

Sq. Ft. (millions)

1

Gensler San Francisco; gensler.com

$128.520

$2,850.00

39.75

739

1

2

Hellmuth, Obata + Kassabaum Saint Louis; hok.com

$95.792

$2,736.90

35.09

259

2

3

Perkins + Will Chicago; perkinswill.com

$60.200

$1,400.00

16.50

251

6

4

Callison Seattle; callison.com

$49.440

$1,395.00

13.49

115

9

5

Leo A Daly Omaha; leoadaly.com

$44.800

$1,125.75

14.25

182

4

6

hba/Hirsch Bedner Associates Los Angeles; hbadesign.com

$42.103

$2,484.06

23.66

280

19

7

Skidmore, Owings & Merrill New York; som.com

$42.000

NR

NR

204

3

8

IA Interior Architects San Francisco; interiorarchitects.com

$41.966

$770.00

20.80

222

7

9

HDR Omaha; hdrinc.com

$41.600

$1,500.00

15.80

256

8

10

SmithGroup Minneapolis; smithgroup.com

$34.827

$517.91

5.58

164

16

11

Cannon Design Boston; cannondesign.com

$33.600

NR

4.50

140

15

12

Wilson & Associates Dallas; wilsonassoc.com

$33.000

$1,000.00

NR

232

17

13

NELSON Philadelphia; nelsononline.com

$32.000

$800.00

14.00

270

22

14

NBBJ Seattle; nbbj.com

$30.500

$915.00

20.00

207

13

15

Pavlik Design Team Fort Lauderdale, Florida; pavlikdesign.com

$29.793

$1,650.00

21.10

134

11

16

PageSoutherlandPage Houston; pspaec.com

$29.281

$366.00

5.63

181

18

17

Jacobs Pasadena, California; jacobs.com

$28.811

$320.00

4.00

158

5

18

HLW New York; hlw.com

$28.400

$600.00

NR

100

10

19

Design Forum Dayton, Ohio; designforum.com

$27.900

$650.00

6.30

206

21

20

Creative Design Consultants Costa Mesa, California; cdcdesigns.com

$27.000

NR

0.75

84

20

21

Perkins Eastman New York; perkinseastman.com

$25.800

$368.57

2.46

142

24

22

TPG Architecture (The Phillips Group) New York; tpgarchitecture.com

$25.700

$1,540.00

14.00

89

14

23

Hillier Architecture Princeton, New Jersey; hillier.com

$22.750

$432.00

5.80

60

12

24

DMJM Rottet/DMJM Design Los Angeles; dmjmrottet.com

$22.080

$285.60

2.70

155

27

25

Flad & Associates Madison, Wisconsin; flad.com

$21.825

$473.00

8.80

152

23

26

Kling Philadelphia; kling.us

$19.500

$400.00

2.50

90

25

27

Zimmer Gunsul Frasca Partnership Portland, Oregon; zgf.com

$18.500

$608.00

2.40

65

38

28

FRCH Design Worldwide Cincinnati; frch.com

$18.084

$200.77

NR

129

32

29

Ellerbe Becket Minneapolis; ellerbebecket.com

$18.000

$450.00

5.83

36

43

30

A/R Environetics Group New York; arenvironetics.com

$17.600

$190.00

2.60

65

30

31

HKS Dallas; hksinc.com

$17.500

$450.00

5.00

74

28

32

Mancini Duffy New York; manciniduffy.com

$17.280

$475.00

7.80

122

29

33

RTKL Associates Baltimore; rtkl.com

$16.500

$410.00

6.80

74

26

34

Burt Hill Pittsburgh; burthill.com

$16.120

NR

NR

244

34

35

Ted Moudis Associates New York; tedmoudis.com

$15.550

$155.00

3.50

80

39

36

EwingCole Philadelphia; ewingcole.com

$15.214

$570.00

2.90

147

31

37

CUH2A Princeton, New Jersey; cuh2a.com

$15.000

$933.83

15.30

79

48

38

Interior Space International Chicago; epstein-isi.com

$15.000

$550.00

14.00

78

37

39

STUDIOS Architecture Washington, D.C.; studiosarch.com

$14.700

$900.00

4.00

77

35

40

HFS Group/Concepts 4 Long Beach, California; hfsales.com

$14.200

$312.00

9.00

28

72

41

Little Diversified Architectural Consulting Charlotte, North Carolina; littleonline.com

$13.750

$320.00

16.50

33

59

42

Cubellis Associates Boston; cubellis.com

$13.475

$296.45

5.39

52

50

43

Marc-Michaels Interior Design Winter Park, Florida; marc-michaels.com

$13.300

$25.60

NR

41

42

44

VOA Associates Chicago; voa.com

$12.800

$152.00

4.60

63

55

45

Peter Marino Architect New York; petermarinoarchitect.com

$12.375

$350.00

0.55

95

45

46

Daroff Design + DDI Architects Philadelphia; daroffdesign.com

$12.222

$160.00

2.00

54

66

47

DBI Architects Washington, D.C.; dbia.com

$12.200

$221.00

2.60

51

44

48

ASD Atlanta; asdnet.com

$12.000

NR

NR

64

51

49

Roger Ferris + Partners Westport, Connecticut; ferrisarch.com

$11.500

$300.00

1.50

48

47

50

Granary Associates Philadelphia; granaryassoc.com

$10.950

NR

NR

58

71

51

Swanke Hayden Connell Architects New York; shca.com

$10.600

$250.00

3.50

107

40

52

DiLeonardo International Warwick, Rhode Island; dileonardo.com

$10.560

NR

NR

55

49

53

RMW architecture & interiors San Francisco; rmw.com

$10.415

$247.25

3.15

51

52

54

Gresham Smith and Partners Nashville; gspnet.com

$10.160

$197.29

3.91

67

60

55

Brennan Beer Gorman Monk Interiors New York; bbg-bbgm.com

$10.150

NR

NR

60

82

56

Switzer Group New York; theswitzergroup.com

$10.100

$75.00

2.50

45

75

57

CBT/Childs Bertman Tseckares Boston; cbtarchitects.com

$10.000

$230.00

3.00

44

53

58

TVS Atlanta; tvsa.com

$10.000

$98.12

1.63

49

65

59

Karlsberger Companies Columbus, Ohio; karlsberger.com

$9.847

$278.00

2.28

20

57

60

SPACE Chicago; thinkspace.biz

$9.750

$475.00

6.80

118

41

61

OWP/P Chicago; owpp.com

$8.600

$215.00

4.30

30

46

62

Ballinger Philadelphia; ballinger-ae.com

$8.600

$165.00

4.50

22

62

63

Gould Evans Kansas City, Missouri; gouldevans.com

$8.500

NR

NR

147

56

64

Tricarico Architecture and Design Wayne, New Jersey; tricarico.com

$8.493

$140.00

4.92

70

63

65

Huntsman Architectural Group San Francisco; huntsmanag.com

$8.057

$300.00

7.00

61

73

66

Cooper Carry Atlanta; coopercarry.com

$8.030

NR

NR

46

83

67

Shepley Bulfinch Richardson and Abbott Boston; sbra.com

$7.920

$110.00

0.80

16

67

68

McCall Design Group San Francisco; mccalldesign.com

$7.840

$80.00

1.50

38

NR

69

LS3P Associates Charleston, South Carolina; ls3p.com

$7.800

$650.00

12.00

61

86

70

Smallwood, Reynolds, Stewart, Stewart & Associates Atlanta; srssa.com

$7.742

$155.00

3.00

37

98

71

Spector Group New York; spectorgroup.com

$7.560

NR

1.49

32

64

72

Environments Group Chicago; envgroup.com

$7.500

$200.00

2.00

59

97

73

Gwathmey Siegel & Associates Architects New York; gwathmey-siegel.com

$7.500

$165.28

0.31

48

68

74

Butler Rogers Baskett New York; brb.com

$7.452

$157.80

1.75

57

61

75

BraytonHughes Design Studios San Francisco; bhdstudio.com

$7.400

NR

NR

32

79

76

Lawrence Group Saint Louis; thelawrencegroup.com

$7.262

$130.75

1.80

77

92

77

Francis Cauffman Foley Hoffmann Philadelphia; fcfh-did.com

$7.000

$150.00

3.00

37

76

78

Wimberly Allison Tong & Goo Honolulu; watg.com

$7.000

NR

NR

53

84

79

Planning Design Research Corporation Houston; pdrcorp.com

$6.988

$300.00

3.75

46

93

80

Slifer Designs Edwards, Colorado; sliferdesigns.com

$6.900

NR

NR

37

74

81

WWCOT Los Angeles; wwcot.com

$6.805

$168.00

3.00

15

NR

82

H. Chambers Company Baltimore; chambersusa.com

$6.775

$65.00

2.00

13

78

83

Tsoi/Kobus & Associates Cambridge, Massachusetts; tka-architects.com

$6.771

$313.11

1.24

7

58

84

Wolcott Architecture Interiors Culver City, California; wolcottai.com

$6.693

$90.00

2.00

40

112

85

Carrier Johnson San Diego; carrierjohnson.com

$6.536

$93.37

0.93

23

94

86

TRO/The Ritchie Organization Newton, Massachusetts; troarch.com

$6.294

$57.21

0.32

17

89

87

OPX Washington, D.C.; opxglobal.com

$6.255

$70.00

1.50

34

81

88

TranSystems Corporation South Norwalk, Connecticut; silvestertafuro.com

$6.247

NR

1.00

30

100

89

LPA Irvine, California; lpainc.com

$6.096

$142.13

2.41

36

107

90

JGA Southfield, Michigan; jga.com

$6.012

$55.00

1.70

33

77

91

JPC Architects Bellevue, Washington; jpcarchitects.com

$6.000

$462.00

7.70

42

121

92

Ware Malcomb Irvine, California; waremalcomb.com

$5.920

$140.00

4.10

41

103

93

H. Hendy Associates Newport Beach, California; hhendy.com

$5.907

$86.00

1.80

37

110

94

Staffelbach Design Associates Dallas; staffelbach.com

$5.890

$96.00

0.85

47

96

95

Loebl Schlossman & Hackl Chicago; lshdesign.com

$5.890

$85.50

0.95

14

85

96

Group Goetz Architects Washington, D.C.; gga.com

$5.800

$120.00

1.20

34

99

97

Bergmeyer Associates Boston; bergmeyer.com

$5.700

$103.00

0.75

54

90

98

JRS Architect Mineola, New York; jrsarchitect.com

$5.700

$51.00

1.20

24

69

99

ADD Cambridge, Massachusetts; addinc.com

$5.600

$186.60

3.73

34

91

100

RYA Design Consultancy Dallas; rya.com

$5.525

$176.13

1.96

39

136