Top 100 Contractors in NAICS 236: Construction of Buildings, FY2021

Name: Top 100 Contractors in NAICS 236: Construction of Buildings, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 21% of FY2021 NAICS 236 contract dollars

Contract obligations: $24,758,496,147 Net of deobligations, by contracts coded NAICS 236 or a code under it
Contractors: 3,751 Parent companies with an obligation
Largest contractor: Hensel Phelps Construction Co $1.06 billion, 4.1% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Hensel Phelps Construction Co 9 awardees, including Hensel Phelps - Shimizu JV Top agencies Army (Department of the Army) Navy (Department of the Navy) Commerce (Department of Commerce)	$1,063,301,536	4.1%	Rank history: #1 in FY2022, #10 in FY2023, #2 in FY2024 and #7 in FY2025; up 1 since FY2020.
2	Walsh - Turner JV II Top agencies VA (Department of Veterans Affairs)	$840,130,368	3.3%	Rank history: not on the FY2022 list, #69 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
3	Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$730,391,353	2.8%	Rank history: not on the FY2022 list, #31 in FY2023, #22 in FY2024 and #17 in FY2025; new, not ranked in FY2020.
4	The Whiting-Turner Contracting Company Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) GSA (General Services Administration)	$717,851,544	2.8%	Rank history: #6 in FY2022, #3 in FY2023, #6 in FY2024 and #5 in FY2025; down 1 since FY2020.
5	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies USAF (Department of the Air Force) DOS (Department of State) Army (Department of the Army)	$440,371,322	1.7%	Rank history: #3 in FY2022, #8 in FY2023, #4 in FY2024 and not on the FY2025 list; unchanged since FY2020.
6	The Walsh Group 5 awardees, including Archer Western Federal JV, Walsh Construction Company II, LLC and Archer Western Construction LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DOT (Department of Transportation)	$359,867,955	1.4%	Rank history: #48 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
7	RQ Construction, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$355,706,686	1.4%	Rank history: #5 in FY2022, #12 in FY2023, #13 in FY2024 and #6 in FY2025; up 5 since FY2020.
8	Pernix International, LLC Top agencies DOS (Department of State)	$319,227,392	1.2%	Rank history: not on the FY2022 list, #29 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
9	Parsons Corporation 2 awardees, including Parsons Government Services Inc. and Ptsi Managed Services Inc. Top agencies Army (Department of the Army) DOE (Department of Energy) NASA (National Aeronautics and Space Administration)	$267,254,930	1.0%	Rank history: #90 in FY2022, #33 in FY2023, #65 in FY2024 and #28 in FY2025; up 46 since FY2020.
10	Harper Construction Company, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$258,129,910	1.0%	Rank history: #20 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; up 7 since FY2020.
11	Caddell Construction Co., Inc. 2 awardees, including Caddell Construction Co. (De), LLC Top agencies DOS (Department of State) Army (Department of the Army) USAF (Department of the Air Force)	$229,365,917	0.9%	Rank history: #2 in FY2022 and not on the FY2023–FY2025 lists; down 2 since FY2020.
12	American International Contractors (Special Projects) Inc. Top agencies DOS (Department of State) Army (Department of the Army)	$228,542,680	0.9%	Rank history: not on the FY2022–FY2025 lists; up 160 since FY2020.
13	Hcbeck Ltd. Top agencies HHS (Department of Health and Human Services)	$202,632,769	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	Dobco Inc. Top agencies Army (Department of the Army)	$195,252,888	0.8%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; up 176 since FY2020.
15	Itsi Gilbane Japan G.K. 4 awardees, including Gilbane Federal, Gilbane Japan GK and Gilbane Building Company Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DHS (Department of Homeland Security)	$187,766,688	0.7%	Rank history: #8 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
16	Tutor Perini Corporation 4 awardees, including ROY Anderson Corp, Perini Management Services, Inc. and Black Construction Corporation Top agencies DHS (Department of Homeland Security) DOL (Department of Labor) Army (Department of the Army)	$184,477,599	0.7%	Rank history: #13 in FY2022, #42 in FY2023, #72 in FY2024 and not on the FY2025 list; up 10 since FY2020.
17	Clark Construction Group LLC 4 awardees, including Atkinson / Clark, A Joint Venture and Clark Construction Group - California, LP Top agencies Navy (Department of the Navy) Army (Department of the Army) VA (Department of Veterans Affairs)	$181,418,142	0.7%	Rank history: #21 in FY2022, #6 in FY2023, #1 in FY2024 and #8 in FY2025; up 15 since FY2020.
18	Turner Construction Company 3 awardees, including Sociedad Espanola De Montajes Industriales SA and Dragados Sociedad Anonima Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) SSA (Social Security Administration)	$178,884,178	0.7%	Rank history: #44 in FY2022, #73 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
19	Brasfield & Gorrie LLC Top agencies GSA (General Services Administration) DOT (Department of Transportation) Army (Department of the Army)	$178,195,361	0.7%	Rank history: #26 in FY2022, #2 in FY2023, #5 in FY2024 and #9 in FY2025; up 389 since FY2020.
20	Obayashi Corporation 2 awardees, including Webcor Construction LP Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$167,663,733	0.7%	Rank history: not on the FY2022 list, #81 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
21	JE Dunn Construction Group Inc. Through J.e. Dunn Construction Company Top agencies Army (Department of the Army) GSA (General Services Administration) USAF (Department of the Air Force)	$163,289,629	0.6%	Rank history: #15 in FY2022, not on the FY2023 list, #51 in FY2024 and not on the FY2025 list; up 47 since FY2020.
22	Grunley Construction Co., Inc. Top agencies Army (Department of the Army) Smithsonian (Smithsonian Institution) DOI (Department of the Interior)	$161,669,780	0.6%	Rank history: #7 in FY2022, #15 in FY2023, #21 in FY2024 and #32 in FY2025; down 9 since FY2020.
23	Rooney Holdings, Inc. Through Manhattan Construction Company LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$150,787,917	0.6%	Rank history: not on the FY2022–FY2025 lists; up 119 since FY2020.
24	Korte Construction Company Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$138,879,345	0.5%	Rank history: #59 in FY2022, #47 in FY2023, #20 in FY2024 and #26 in FY2025; up 19 since FY2020.
25	J Kokolakis Contracting Inc. Top agencies Army (Department of the Army)	$138,837,712	0.5%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 377 since FY2020.
26	Solpac Construction Inc. Top agencies Navy (Department of the Navy)	$136,768,983	0.5%	Rank history: not on the FY2022–FY2025 lists; up 19 since FY2020.
27	Zodiac, Inc. Through Zodiac-Poettker HBZ Joint Venture II, LLC Top agencies Army (Department of the Army)	$129,008,000	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
28	Aptim Federal Services LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$126,275,937	0.5%	Rank history: #25 in FY2022, #100 in FY2023 and not on the FY2024–FY2025 lists; down 7 since FY2020.
29	Walsh Federal LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) Navy (Department of the Navy)	$120,205,312	0.5%	Rank history: #14 in FY2022, #4 in FY2023, #19 in FY2024 and #12 in FY2025; down 21 since FY2020.
30	CMS Corporation Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$115,455,319	0.4%	Rank history: #43 in FY2022, #44 in FY2023, #11 in FY2024 and #57 in FY2025; up 66 since FY2020.
31	ACC Construction Co., Inc. Top agencies Army (Department of the Army)	$113,749,236	0.4%	Rank history: #54 in FY2022, #50 in FY2023, #70 in FY2024 and #18 in FY2025; up 112 since FY2020.
32	Messer Construction Co Top agencies Army (Department of the Army) USAF (Department of the Air Force) GSA (General Services Administration)	$106,484,605	0.4%	Rank history: not on the FY2022 list, #30 in FY2023, #47 in FY2024 and not on the FY2025 list; up 1 since FY2020.
33	Jacobs Engineering Group Inc. 5 awardees, including Ch2M Hill Constructors, Inc., Ch2M Facility Support Services, LLC and Jacobs Project Management Co Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) USAF (Department of the Air Force)	$102,060,705	0.4%	Rank history: #89 in FY2022 and not on the FY2023–FY2025 lists; up 71 since FY2020.
34	Volmar Construction Inc. Top agencies GSA (General Services Administration) DOJ (Department of Justice)	$101,686,052	0.4%	Rank history: not on the FY2022–FY2024 lists and #62 in FY2025; up 101 since FY2020.
35	JX Holdings Inc. 2 awardees, including Nippo Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$100,334,818	0.4%	Rank history: #10 in FY2022, #19 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
36	AECOM 7 awardees, including AECOM Technical Services, Inc., URS Group, Inc. and AECOM Construction, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$98,877,215	0.4%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 9 since FY2020.
37	Black Construction-Tutor Perini JV Top agencies Navy (Department of the Navy)	$98,512,457	0.4%	Rank history: #12 in FY2022, #77 in FY2023, #23 in FY2024 and #38 in FY2025; up 52 since FY2020.
38	CCI Utility and Construction Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$98,384,475	0.4%	Rank history: #29 in FY2022, #48 in FY2023, #31 in FY2024 and #35 in FY2025; down 9 since FY2020.
39	Rq-Aecom 2 JV Top agencies DHS (Department of Homeland Security)	$97,938,962	0.4%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
40	Mccarthy Hitt - Next NGA West Joint Venture Top agencies Army (Department of the Army)	$90,440,815	0.4%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
41	J & J Maintenance Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army) USAF (Department of the Air Force)	$88,988,526	0.3%	Rank history: #16 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; down 10 since FY2020.
42	Mvl-Percassi-Gemmo JV LLC Top agencies Navy (Department of the Navy)	$81,489,560	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Seqirus USA Inc. Through Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$80,383,271	0.3%	Rank history: #65 in FY2022, #76 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
44	Conti Enterprises Inc. Through Conti Federal Services, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$78,817,624	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Nishimatsu Construction Co.,Ltd. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$76,370,001	0.3%	Rank history: not on the FY2022 list, #27 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
46	Cook Inlet Region Inc. 5 awardees, including Weldin Construction LLC, Silver Mountain Construction, LLC and North Wind Construction Services, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$73,945,821	0.3%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
47	Advon Corporation Top agencies VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration)	$73,931,531	0.3%	Rank history: not on the FY2022–FY2025 lists; up 170 since FY2020.
48	M. a. Mortenson Companies Inc. Through M.a. Mortenson Company Top agencies Army (Department of the Army) USDA (Department of Agriculture) Navy (Department of the Navy)	$72,367,594	0.3%	Rank history: #32 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
49	Contrack International Inc. Through Contrack Watts Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$68,982,460	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$67,277,500	0.3%	Rank history: not on the FY2022 list, #20 in FY2023, #16 in FY2024 and #14 in FY2025; up 43 since FY2020.
51	Caddell-Nan A Joint Venture Top agencies Navy (Department of the Navy)	$66,555,528	0.3%	Rank history: #75 in FY2022, #92 in FY2023, #41 in FY2024 and not on the FY2025 list; down 36 since FY2020.
52	Nana Regional Corporation Inc 4 awardees, including Portico Services LLC, Jade Creek Construction LLC and Akima Construction Services LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$65,586,922	0.3%	Rank history: #81 in FY2022 and not on the FY2023–FY2025 lists; up 192 since FY2020.
53	Mccarthy Mortenson Nbaf A Joint Venture Top agencies DHS (Department of Homeland Security)	$65,244,333	0.3%	Rank history: not on the FY2022–FY2025 lists; up 286 since FY2020.
54	Methuen Construction Co Inc. Top agencies Navy (Department of the Navy)	$65,133,632	0.3%	Rank history: not on the FY2022–FY2025 lists; up 100 since FY2020.
55	Ryan Companies US Inc. Top agencies GSA (General Services Administration)	$64,408,212	0.2%	Rank history: not on the FY2022–FY2025 lists; up 39 since FY2020.
56	Sea Pac Engineering Inc. Top agencies DOS (Department of State) Navy (Department of the Navy) Army (Department of the Army)	$62,385,168	0.2%	Rank history: not on the FY2022–FY2025 lists; up 279 since FY2020.
57	Doyon Government Contracting Inc. 9 awardees, including Doyon Management Services, LLC, Doyon Project Services, LLC and Doyon Technical Services, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) DHS (Department of Homeland Security)	$61,701,196	0.2%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
58	Empresa De Construccion Y Transporte Eterna S.A. De C.V. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOS (Department of State)	$61,299,408	0.2%	Rank history: not on the FY2022–FY2025 lists; up 288 since FY2020.
59	R.a. Burch Construction Co., Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$60,691,168	0.2%	Rank history: not on the FY2022 list, #26 in FY2023, #63 in FY2024 and #53 in FY2025; down 5 since FY2020.
60	Hourigan Construction Corp Top agencies Navy (Department of the Navy)	$60,361,639	0.2%	Rank history: not on the FY2022–FY2025 lists; up 167 since FY2020.
61	Sauer Holdings Inc. Through Sauer Construction, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$59,705,032	0.2%	Rank history: #18 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; down 31 since FY2020.
62	Balfour Beatty LLC 2 awardees, including Balfour Beatty Construction, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$59,648,737	0.2%	Rank history: #22 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; down 21 since FY2020.
63	HHI Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army) DLA (Defense Logistics Agency)	$59,452,792	0.2%	Rank history: #50 in FY2022, #41 in FY2023, #52 in FY2024 and not on the FY2025 list; up 35 since FY2020.
64	Clark / Byrne Aquatics, A Joint Venture Top agencies Army (Department of the Army)	$58,950,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	Herman Construction Group, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$58,796,659	0.2%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
66	Valiant Construction LLC Top agencies VA (Department of Veterans Affairs)	$58,795,165	0.2%	Rank history: #73 in FY2022 and not on the FY2023–FY2025 lists; up 260 since FY2020.
67	TNT Constructors Top agencies Navy (Department of the Navy)	$58,541,448	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	Veterans Holding Group LLC Through Relyant Global LLC Top agencies DOS (Department of State) USAF (Department of the Air Force) Army (Department of the Army)	$58,009,904	0.2%	Rank history: not on the FY2022–FY2025 lists; up 160 since FY2020.
69	Talion Construction, LLC Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$57,492,047	0.2%	Rank history: not on the FY2022–FY2025 lists; up 381 since FY2020.
70	Manhattan Torcon A Joint Venture Top agencies Army (Department of the Army)	$56,509,286	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Tepa, LLC Through Tepa EC, LLC Top agencies DOI (Department of the Interior) Army (Department of the Army)	$55,444,666	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
72	Walga Ross Group JV Top agencies DOI (Department of the Interior) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$54,520,150	0.2%	Rank history: not on the FY2022–FY2025 lists; up 326 since FY2020.
73	J & J Contractors, Inc. Top agencies GSA (General Services Administration) Navy (Department of the Navy) Army (Department of the Army)	$54,274,597	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Thompson Builders Corp Top agencies USAF (Department of the Air Force)	$54,219,500	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	S.b. Ballard Construction Company Top agencies Navy (Department of the Navy) Army (Department of the Army)	$51,123,803	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Desbuild Incorporated Top agencies DOS (Department of State) Navy (Department of the Navy) GSA (General Services Administration)	$50,868,780	0.2%	Rank history: #63 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; up 207 since FY2020.
77	Ecrmjv LLC Top agencies VA (Department of Veterans Affairs)	$49,939,194	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Blue Cord Design and Construction, LLC Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) Army (Department of the Army)	$49,529,588	0.2%	Rank history: not on the FY2022–FY2024 lists and #96 in FY2025; up 1 since FY2020.
79	PCL U.S. Holdings Inc Through Nordic PCL Construction, Inc. Top agencies Army (Department of the Army)	$49,428,660	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
80	Bristol Bay Native Corporation 6 awardees, including Bristol General Contractors, LLC, Specpro Environmental Services LLC and Bristol Construction Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DLA (Defense Logistics Agency)	$49,343,294	0.2%	Rank history: not on the FY2022 list, #68 in FY2023 and not on the FY2024–FY2025 lists; down 46 since FY2020.
81	Web, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) GSA (General Services Administration)	$48,120,576	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Puyenpa Services, LLC Top agencies WHS (DOD Washington Headquarters Service) GSA (General Services Administration) DOI (Department of the Interior)	$47,508,048	0.2%	Rank history: not on the FY2022–FY2025 lists; up 387 since FY2020.
83	Brantley Construction Services, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$47,477,592	0.2%	Rank history: not on the FY2022–FY2025 lists; up 259 since FY2020.
84	Heffler Contracting Group 2 awardees Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$47,420,650	0.2%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
85	Advanced Technology Construction Corporation Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DHS (Department of Homeland Security)	$47,164,637	0.2%	Rank history: not on the FY2022 list, #72 in FY2023, #84 in FY2024 and not on the FY2025 list; up 398 since FY2020.
86	Williams Building Company, Inc. Top agencies VA (Department of Veterans Affairs) DOS (Department of State)	$46,966,811	0.2%	Rank history: not on the FY2022–FY2025 lists; up 37 since FY2020.
87	John C. Grimberg Co., Inc. Top agencies Army (Department of the Army) GSA (General Services Administration) Navy (Department of the Navy)	$46,549,451	0.2%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; down 30 since FY2020.
88	SGS LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$46,432,007	0.2%	Rank history: #62 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 60 since FY2020.
89	Cianbro- AZ A Joint Venture Top agencies Army (Department of the Army)	$46,421,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	L.s. Black Constructors, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$45,727,388	0.2%	Rank history: not on the FY2022–FY2023 lists, #58 in FY2024 and not on the FY2025 list; up 159 since FY2020.
91	Natives of Kodiak, Incorporated 6 awardees, including Koman Construction, LLC, Koman Government Solutions LLC and Koman Diversified Services, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$45,668,705	0.2%	Rank history: not on the FY2022–FY2025 lists; up 40 since FY2020.
92	Davis Constructors & Engineers, Inc. Top agencies Army (Department of the Army)	$45,637,064	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	MDM Construction LLC Top agencies VA (Department of Veterans Affairs)	$45,478,804	0.2%	Rank history: not on the FY2022–FY2025 lists; up 217 since FY2020.
94	Integrated Construction Enterprises Inc. Top agencies GSA (General Services Administration) DHS (Department of Homeland Security) DOS (Department of State)	$45,068,284	0.2%	Rank history: not on the FY2022–FY2025 lists; up 152 since FY2020.
95	Black Construction / Mace International Joint Venture Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$45,054,975	0.2%	Rank history: not on the FY2022–FY2023 lists, #90 in FY2024 and not on the FY2025 list; up 32 since FY2020.
96	Barnhart-Reese Construction, Inc. Top agencies Navy (Department of the Navy)	$44,912,142	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Tepe Bozdemir Ortak Girisimi Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$44,488,400	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	D Square Construction LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$44,231,720	0.2%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
99	Asturian Group, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$44,108,690	0.2%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
100	ESA South, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) USAF (Department of the Air Force)	$43,941,789	0.2%	Rank history: #38 in FY2022, #55 in FY2023, #82 in FY2024 and #48 in FY2025; new, not ranked in FY2020.

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100 of 3,751 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 236

Code	Net obligations	Largest contractor
2362 Nonresidential Building Construction	$23,934,576,004	Hensel Phelps Construction Co
2361 Residential Building Construction	$823,920,143	Core Tech-Hdcc-Kajima LLC

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $25.8 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 236 contractors in FY2021?

1. Hensel Phelps Construction Co ($1.06B), 2. Walsh - Turner JV II ($840M), 3. Core Tech-Hdcc-Kajima LLC ($730M), 4. The Whiting-Turner Contracting Company ($718M), 5. B.l. Harbert Holdings, L.L.C. ($440M), 6. The Walsh Group ($360M), 7. RQ Construction, LLC ($356M), 8. Pernix International, LLC ($319M), 9. Parsons Corporation ($267M), 10. Harper Construction Company, Inc. ($258M).

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