2021 Science and Technology Sector Giants: Top architecture, engineering, and construction firms in the U.S. S+T facilities sector

HDR, CRB, Jacobs, Skanska USA, and Whiting-Turner Contracting Co. top the rankings of the nation's largest science and technology (S+T) sector architecture, engineering, and construction firms, as reported in the 2021 Giants 400 Report.

Top 80 Science and Technology Facility Architecture and AE Firms for 2021 (ALL S+T WORK)
Top 65 Science and Technology Facility Engineering and EA Firms for 2021 (ALL S+T WORK)
Top 45 Science and Technology Facility Contractors and CM Firms for 2021 (ALL S+T WORK)
Top 60 Laboratory Facility Architecture and AE Firms for 2021 (LAB-RELATED WORK ONLY)
Top 50 Laboratory Facility Engineering and EA Firms for 2021 (LAB-RELATED WORK ONLY)
Top 25 Laboratory Facility Contractors and CM Firms for 2021 (LAB-RELATED WORK ONLY)

Top 80 Science and Technology Facility Architecture and AE Firms for 2021
	FIRM	2020 REVENUE
1	HDR	$144,862,468
2	Perkins and Will	$73,807,000
3	DGA Planning \| Architecture \| Interiors	$53,931,599
4	HOK	$48,270,000
5	Payette	$46,554,425
6	Flad Architects	$37,760,000
7	SmithGroup	$37,268,154
8	Gensler	$35,938,984
9	EwingCole	$33,500,000
10	ZGF Architects	$30,313,020
11	CannonDesign	$30,000,000
12	Stantec	$28,832,096
13	Elkus Manfredi Architects	$26,275,000
14	Ennead Architects	$23,970,694
15	Skidmore, Owings & Merrill	$21,226,412
16	Page	$15,797,000
17	HGA	$13,374,375
18	BSA LifeStructures	$12,417,441
19	TRIA	$11,222,200
20	Perkins Eastman	$10,088,635
21	McFarlane Architects	$8,700,000
22	RS&H	$8,600,000
23	Garmann Miller & Associates	$8,520,400
24	HED	$8,122,000
25	Clark & Enersen	$7,784,556
26	Cooper Carry	$7,074,863
27	Moody Nolan	$6,593,480
28	Bergmann	$6,416,000
29	Ayers Saint Gross	$6,284,203
30	EYP	$5,467,571
31	Hanbury	$5,322,349
32	Clark Nexsen	$4,802,000
33	Eppstein Uhen Architects	$3,562,000
34	SLAM	$3,261,677
35	BWBR	$3,059,784
36	Kirksey Architecture	$2,729,410
37	E4H Environments for Health Architecture	$2,350,000
38	NBBJ	$2,100,000
39	MBH Architects	$1,987,500
40	KZF Design	$1,946,193
41	Diamond Schmitt Architects	$1,853,948
42	TreanorHL	$1,581,338
43	KGD Architecture	$1,525,217
44	Ware Malcomb	$1,504,894
45	Mithun	$1,418,383
46	LaBella Associates	$1,374,000
47	Emersion Design	$1,344,562
48	NORR	$1,333,813
49	Hastings+Chivetta Architects	$1,242,759
50	H. Hendy Associates	$1,157,291
51	AE Works Ltd.	$1,106,526
52	Ratio Design	$976,404
53	BHDP Architecture	$932,768
54	RBB Architects	$856,400
55	AE Design Group	$620,000
56	CSArch	$610,197
57	Urbahn Architects	$579,671
58	Architecture, Incorporated	$578,200
59	AHL	$502,096
60	Scientia Architects	$500,000
61	AO	$475,000
62	CBRE	$458,115
63	Studio+	$445,196
64	Crawford Architects	$434,000
65	Davis Brody Bond	$427,290
66	FCA	$356,149
67	Cromwell Architects Engineers	$336,724
68	CO Architects	$317,031
69	NAC Architecture	$282,256
70	Taylor Design	$276,000
71	CallisonRTKL	$270,075
72	Blair + Mui Dowd Architects	$244,444
73	CPL	$199,954
74	Álvarez-Díaz & Villalón \| Architecture & Interior Design	$195,026
75	RDG Planning & Design	$186,699
76	Little Diversified Architectural Consulting	$182,552
77	LEO A DALY	$172,242
78	PGAL	$59,000
79	Shepley Bulfinch	$34,968
80	Plunkett Raysich Architects	$18,632
81	Carrier Johnson + Culture	$13,473
82	Hafer	$7,020
83	LS3P Associates	$2,125

SOURCE: 2021 Giants 400 Report

Top 65 Science and Technology Facility Engineering and EA Firms for 2021
	FIRM	2020 REVENUE
1	Jacobs	$418,290,000
2	CRB	$132,170,000
3	Affiliated Engineers Inc.	$55,542,687
4	Burns & McDonnell	$43,779,473
5	BRPH	$38,063,890
6	WSP USA	$21,713,559
7	Vanderweil Engineers	$16,651,900
8	Alfa Tech Consulting Engineers	$15,000,000
9	EXP	$14,258,687
10	RMF Engineering	$14,000,000
11	KPFF Consulting Engineers	$13,016,000
12	Buro Happold	$12,100,000
13	Salas O'Brien	$11,926,440
14	IMEG Corp.	$6,725,000
15	CDM Smith	$6,291,049
16	NV5 Global	$5,387,000
17	AKF Group	$3,950,000
18	Newcomb & Boyd	$3,712,790
19	Jensen Hughes	$3,540,131
20	Bridgers & Paxton Consulting Engineers	$2,909,093
21	Syska Hennessy Group	$2,883,364
22	M/E Engineering	$2,846,500
23	RMH Group, The	$2,773,374
24	STV	$2,575,676
25	Langan	$2,000,000
26	Dewberry	$1,921,814
27	Bala Consulting Engineers	$1,845,000
28	Highland Associates	$1,800,000
29	Paradigm Structural Engineers	$1,684,194
30	Dunham Associates	$1,400,000
31	SSC Engineering	$1,310,896
32	P2S	$1,304,367
33	Jaros, Baum & Bolles	$1,249,907
34	Farnsworth Group	$1,223,137
35	Wiss, Janney, Elstner Associates	$1,200,000
36	PS&S	$1,148,340
37	Smith Seckman Reid	$846,581
38	Ross & Baruzzini	$800,000
39	DHE Engineering	$617,512
40	MHP Structural Engineers	$582,776
41	Spectrum Engineers	$490,195
42	Osborn Engineering	$475,000
43	HEAPY	$468,940
44	KCI Technologies	$462,700
45	ME Engineers	$450,000
46	EAPC Architects Engineers	$421,873
47	Architectural Engineers	$406,402
48	Magnusson Klemencic Associates	$393,996
49	G2 Consulting Group	$375,000
50	Mazzetti	$367,220
51	TEECOM	$353,942
52	SSOE Group	$287,065
53	Arora Engineers	$279,343
54	Henderson Engineers	$256,860
55	Peter Basso Associates	$250,000
56	Wick Fisher White	$215,000
57	Allen + Shariff	$145,446
58	JQ Engineering	$130,451
59	Davis, Bowen & Friedel	$123,512
60	Wallace Design Collective	$100,000
61	ESD	$66,244
62	Walter P Moore	$48,070
63	H.F. Lenz	$42,000
64	Kohrs Lonnemann Heil Engineers	$38,569
65	French & Parrello Associates	$37,045
66	LBYD	$6,300

SOURCE: 2021 Giants 400 Report

Top 45 Science and Technology Facility Contractors and CM Firms for 2021
	FIRM	2020 REVENUE
1	Skanska USA	$971,988,650
2	Whiting-Turner Contracting Co., The	$695,084,089
3	CRB	$620,910,000
4	DPR Construction	$598,099,000
5	Gilbane Building Company	$333,290,000
6	McCarthy Holdings	$325,401,717
7	Turner Construction	$320,072,281
8	Lendlease	$314,392,573
9	JE Dunn	$280,940,564
10	STO Building Group	$202,000,000
11	Walbridge	$196,888,458
12	Jacobs	$172,086,000
13	CBRE	$144,630,713
14	Mortenson	$110,315,000
15	LeChase Construction Services	$100,156,714
16	Messer Construction	$64,134,713
17	Landry/French Construction	$59,300,000
18	Hensel Phelps	$56,845,678
19	Columbia	$55,800,000
20	Miron Construction	$54,989,208
21	McKinstry	$45,000,000
22	Lease Crutcher Lewis	$39,752,963
23	McCownGordon Construction	$39,684,403
24	Brasfield & Gorrie	$35,768,240
25	Manhattan Construction Group	$35,101,860
26	BartonMalow	$26,683,269
27	Burns & McDonnell	$26,683,176
28	Shawmut Design and Construction	$25,874,137
29	Hoar Construction	$20,430,000
30	Fortis Construction	$15,781,137
31	Hagerman Group, The	$15,000,000
32	Power Construction	$12,000,000
33	Joeris General Contractors	$10,898,630
34	Robins & Morton	$10,758,604
35	JLL	$9,370,021
36	Donohoe Construction	$5,186,812
37	HITT Contracting	$5,021,299
38	STV	$3,484,653
39	Hill International	$3,416,524
40	Saunders Construction	$2,432,085
41	Suffolk Construction	$1,382,514
42	Skender	$1,258,114
43	BRPH	$1,235,031
44	Lawrence Group	$922,440
45	McDonough Bolyard Peck	$620,776
46	JLG Architects	$134,279
47	Crossland Construction	$32,999

SOURCE: 2021 Giants 400 Report

Top 60 Laboratory Facility Architecture and AE Firms for 2021
	FIRM	2020 REVENUE
1	HDR	$76,242,244
2	Payette	$46,554,425
3	DGA Planning \| Architecture \| Interiors	$39,239,697
4	Flad Architects	$32,096,000
5	ZGF Architects	$30,313,020
6	Elkus Manfredi Architects	$26,275,000
7	Ennead Architects	$23,970,694
8	Gensler	$20,109,329
9	HOK	$19,290,000
10	EwingCole	$16,000,000
11	HGA	$10,030,781
12	Page	$9,551,000
13	McFarlane Architects	$8,700,000
14	RS&H	$8,600,000
15	Garmann Miller & Associates	$8,520,400
16	Perkins and Will	$7,207,000
17	Cooper Carry	$6,382,554
18	HED	$4,872,000
19	E4H Environments for Health Architecture	$2,350,000
20	Kirksey Architecture	$2,261,497
21	MBH Architects	$1,987,500
22	KZF Design	$1,946,193
23	Diamond Schmitt Architects	$1,853,948
24	SLAM	$1,826,557
25	Bergmann	$1,750,000
26	LaBella Associates	$1,374,000
27	Emersion Design	$1,344,562
28	BWBR	$1,341,200
29	NORR	$1,333,813
30	BSA LifeStructures	$1,245,796
31	TRIA	$1,168,200
32	EYP	$1,112,930
33	AE Works Ltd.	$1,106,526
34	Ayers Saint Gross	$1,060,873
35	Ratio Design	$976,404
36	BHDP Architecture	$932,768
37	RBB Architects	$856,400
38	Clark Nexsen	$800,000
39	Eppstein Uhen Architects	$659,000
40	AE Design Group	$620,000
41	Architecture, Incorporated	$578,200
42	Scientia Architects	$500,000
43	CBRE	$458,115
44	Studio+	$445,196
45	Cromwell Architects Engineers	$336,724
46	Ware Malcomb	$325,512
47	CO Architects	$317,031
48	NAC Architecture	$282,256
49	Davis Brody Bond	$258,664
50	Blair + Mui Dowd Architects	$244,444
51	FCA	$215,499
52	CPL	$199,954
53	Álvarez-Díaz & Villalón \| Architecture & Interior Design	$195,026
54	RDG Planning & Design	$186,699
55	Little Diversified Architectural Consulting	$182,552
56	AHL	$174,775
57	TreanorHL	$89,497
58	PGAL	$59,000
59	Plunkett Raysich Architects	$18,632
60	Carrier Johnson + Culture	$13,473
61	LS3P Associates	$2,125

SOURCE: 2021 Giants 400 Report

Top 50 Laboratory Facility Engineering and EA Firms for 2021
	FIRM	2020 REVENUE
1	Jacobs	$197,916,000
2	CRB	$132,170,000
3	Affiliated Engineers Inc.	$55,542,687
4	Burns & McDonnell	$43,779,473
5	WSP USA	$21,713,559
6	Vanderweil Engineers	$14,388,400
7	Salas O'Brien	$11,926,440
8	Alfa Tech Consulting Engineers	$10,000,000
9	RMF Engineering	$10,000,000
10	Buro Happold	$9,092,000
11	KPFF Consulting Engineers	$6,508,000
12	NV5 Global	$5,333,000
13	Newcomb & Boyd	$3,712,790
14	CDM Smith	$3,669,778
15	AKF Group	$3,320,000
16	Bridgers & Paxton Consulting Engineers	$2,909,093
17	Syska Hennessy Group	$2,883,364
18	Jensen Hughes	$2,530,095
19	Langan	$2,000,000
20	Dewberry	$1,921,814
21	Bala Consulting Engineers	$1,845,000
22	M/E Engineering	$1,423,250
23	SSC Engineering	$1,310,896
24	P2S	$1,304,367
25	Farnsworth Group	$1,223,137
26	EXP	$1,053,754
27	Jaros, Baum & Bolles	$866,968
28	Smith Seckman Reid	$846,581
29	Ross & Baruzzini	$600,000
30	PS&S	$585,340
31	HEAPY	$468,940
32	KCI Technologies	$462,700
33	EAPC Architects Engineers	$421,873
34	Architectural Engineers	$406,402
35	Magnusson Klemencic Associates	$393,996
36	TEECOM	$353,942
37	DHE Engineering	$330,378
38	SSOE Group	$287,065
39	Henderson Engineers	$256,860
40	Osborn Engineering	$250,000
41	Peter Basso Associates	$250,000
42	Wick Fisher White	$215,000
43	Wiss, Janney, Elstner Associates	$200,000
44	Allen + Shariff	$145,446
45	JQ Engineering	$130,451
46	Davis, Bowen & Friedel	$123,512
47	G2 Consulting Group	$75,000
48	MHP Structural Engineers	$73,193
49	ESD	$66,244
50	H.F. Lenz	$42,000
51	Arora Engineers	$41,627
52	French & Parrello Associates	$37,045
53	Spectrum Engineers	$8,635
54	LBYD	$6,300

SOURCE: 2021 Giants 400 Report

Top 25 Laboratory Facility Contractors and CM Firms for 2021
	FIRM	2020 REVENUE
1	CRB	$620,910,000
2	Whiting-Turner Contracting Co., The	$478,083,371
3	Skanska USA	$469,497,013
4	McCarthy Holdings	$325,401,717
5	Lendlease	$314,392,573
6	JE Dunn	$280,940,564
7	STO Building Group	$202,000,000
8	Walbridge	$196,888,458
9	Gilbane Building Company	$173,025,000
10	Mortenson	$110,315,000
11	Landry/French Construction	$59,300,000
12	Hensel Phelps	$56,845,678
13	McKinstry	$45,000,000
14	CBRE	$38,613,963
15	Manhattan Construction Group	$35,101,860
16	Burns & McDonnell	$26,683,176
17	Shawmut Design and Construction	$25,874,137
18	BartonMalow	$14,968,565
19	McCownGordon Construction	$12,869,722
20	Joeris General Contractors	$10,153,072
21	Messer Construction	$5,506,178
22	Hill International	$2,921,470
23	Saunders Construction	$2,432,085
24	Suffolk Construction	$1,382,514
25	Skender	$1,258,114
26	Lawrence Group	$922,440
27	Jacobs	$56,000

SOURCE: 2021 Giants 400 Report

BACK TO THE 2021 GIANTS 400 LANDING PAGE

See how your architecture, engineering, or construction firm stacks up against the nation's AEC Giants. For more than 45 years, the editors of Building Design+Construction have surveyed the largest AEC firms in the U.S./Canada to create the annual Giants 400 report. This year, a record 519 firms participated in the Giants 400 report. The final report includes 137 rankings across 25 building sectors and specialty categories.

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