Top 100 Contractors in PSC Y: Construction of Structures/Facilities, FY2021

Name: Top 100 Contractors in PSC Y: Construction of Structures/Facilities, FY2021
Creator: GovTribe

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

The top 10 won 24% of FY2021 PSC Y contract dollars

Contract obligations: $23,277,867,737 Net of deobligations, by contracts coded PSC Y or a code under it
Contractors: 3,643 Parent companies with an obligation
Largest contractor: Walsh - Turner JV II $840 million, 3.4% 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	Walsh - Turner JV II Top agencies VA (Department of Veterans Affairs)	$840,130,368	3.4%	Rank history: not on the FY2022 list, #79 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
2	Bechtel Corp Through Bechtel National, Inc. Top agencies DOE (Department of Energy)	$821,408,315	3.4%	Rank history: #8 in FY2022, #6 in FY2023, #4 in FY2024 and #3 in FY2025; up 5 since FY2020.
3	Hensel Phelps Construction Co 9 awardees, including Hensel Phelps - Shimizu JV Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$805,912,904	3.3%	Rank history: #1 in FY2022, #13 in FY2023, #3 in FY2024 and #9 in FY2025; up 1 since FY2020.
4	Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$730,391,353	3.0%	Rank history: not on the FY2022 list, #39 in FY2023, #23 in FY2024 and #10 in FY2025; new, not ranked in FY2020.
5	The Whiting-Turner Contracting Company Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) GSA (General Services Administration)	$661,343,239	2.7%	Rank history: #14 in FY2022, #22 in FY2023, #13 in FY2024 and #8 in FY2025; up 5 since FY2020.
6	Great Lakes Dredge & Dock Corporation 2 awardees, including Forgen LLC Top agencies Army (Department of the Army)	$460,329,426	1.9%	Rank history: #32 in FY2022, #16 in FY2023, #47 in FY2024 and #91 in FY2025; up 9 since FY2020.
7	The Walsh Group 7 awardees, including Archer Western Federal JV, Walsh Construction Company and Walsh Construction Company II, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$431,817,180	1.8%	Rank history: #23 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2020.
8	BAE Systems PLC Through BAE Systems Ordnance Systems Inc. Top agencies Army (Department of the Army)	$386,016,224	1.6%	Rank history: #42 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; up 22 since FY2020.
9	B.l. Harbert Holdings, L.L.C. Through BL Harbert International LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$353,248,964	1.4%	Rank history: #4 in FY2022, #12 in FY2023, #7 in FY2024 and not on the FY2025 list; down 1 since FY2020.
10	RQ Construction, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$341,164,136	1.4%	Rank history: #11 in FY2022, #25 in FY2023, #22 in FY2024 and #16 in FY2025; up 14 since FY2020.
11	Pernix International, LLC Top agencies DOS (Department of State)	$319,127,392	1.3%	Rank history: not on the FY2022 list, #30 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
12	Tutor Perini Corporation 4 awardees, including Black Construction Corporation, ROY Anderson Corp and Perini Management Services, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DOL (Department of Labor)	$303,882,681	1.2%	Rank history: #9 in FY2022, #78 in FY2023 and not on the FY2024–FY2025 lists; up 78 since FY2020.
13	Harper Construction Company, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$258,057,054	1.1%	Rank history: #28 in FY2022, #46 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
14	Parsons Corporation 2 awardees, including Parsons Government Services Inc. Top agencies Army (Department of the Army) DOE (Department of Energy)	$256,053,469	1.1%	Rank history: not on the FY2022 list, #33 in FY2023, #60 in FY2024 and #31 in FY2025; up 63 since FY2020.
15	American International Contractors (Special Projects) Inc. Top agencies DOS (Department of State)	$228,539,680	0.9%	Rank history: not on the FY2022–FY2025 lists; up 238 since FY2020.
16	Webuild S.p.A. Through The Lane Construction Corporation Top agencies Army (Department of the Army)	$219,026,187	0.9%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
17	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.
18	Peter Kiewit Sons', Inc. 8 awardees, including Kiewit Infrastructure South Co, Kiewit Infrastructure Co. and Kiewit Infrastructure West Co. Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$195,747,027	0.8%	Rank history: #41 in FY2022, #17 in FY2023, #9 in FY2024 and #5 in FY2025; up 17 since FY2020.
19	Dobco Inc. Top agencies Army (Department of the Army)	$195,252,888	0.8%	Rank history: #80 in FY2022 and not on the FY2023–FY2025 lists; up 178 since FY2020.
20	Clark Construction Group LLC 6 awardees, including Atkinson / Clark, A Joint Venture, Clark Construction LLC and Shirley Contracting Company, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) VA (Department of Veterans Affairs)	$181,302,509	0.7%	Rank history: #24 in FY2022, #5 in FY2023, #1 in FY2024 and #22 in FY2025; up 16 since FY2020.
21	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)	$175,995,468	0.7%	Rank history: #10 in FY2022 and not on the FY2023–FY2025 lists; down 5 since FY2020.
22	Thalle Construction Co Inc. Top agencies Army (Department of the Army)	$166,853,406	0.7%	Rank history: #20 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
23	M.c. Dean, Inc. Top agencies Army (Department of the Army) GSA (General Services Administration)	$159,808,637	0.7%	Rank history: not on the FY2022–FY2025 lists; up 163 since FY2020.
24	UEI WWFNFCV65M13 Top agencies Army (Department of the Army)	$152,618,794	0.6%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; up 390 since FY2020.
25	Obayashi Corporation 3 awardees, including Webcor Construction LP and Kraemer North America LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) DOS (Department of State)	$149,957,679	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	J Kokolakis Contracting Inc. Top agencies Army (Department of the Army)	$138,837,712	0.6%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 320 since FY2020.
27	Korte Construction Company Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$137,248,627	0.6%	Rank history: not on the FY2022 list, #54 in FY2023, #34 in FY2024 and #35 in FY2025; up 23 since FY2020.
28	Solpac Construction Inc. Top agencies Navy (Department of the Navy)	$136,768,983	0.6%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
29	Maloney-Odin JV Top agencies Army (Department of the Army)	$134,682,668	0.6%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; up 42 since FY2020.
30	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.
31	Brasfield & Gorrie LLC Top agencies GSA (General Services Administration) Army (Department of the Army) DOJ (Department of Justice)	$125,453,237	0.5%	Rank history: #62 in FY2022, #2 in FY2023, not on the FY2024 list and #12 in FY2025; up 312 since FY2020.
32	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: #16 in FY2022, #1 in FY2023, #26 in FY2024 and #17 in FY2025; down 20 since FY2020.
33	ACC Construction Co., Inc. Top agencies Army (Department of the Army)	$113,749,236	0.5%	Rank history: #67 in FY2022, not on the FY2023 list, #75 in FY2024 and #23 in FY2025; up 115 since FY2020.
34	Sauer Holdings Inc. Through Sauer Construction, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$113,222,986	0.5%	Rank history: #43 in FY2022, #31 in FY2023 and not on the FY2024–FY2025 lists; up 28 since FY2020.
35	Kokosing Construction Company Inc. 3 awardees, including Construction Co Corman Kokosing and Kokosing Alberici, LLC Top agencies DOT (Department of Transportation) Army (Department of the Army)	$112,868,344	0.5%	Rank history: not on the FY2022–FY2025 lists; up 9 since FY2020.
36	Grunley Construction Co., Inc. Top agencies Army (Department of the Army) National Gallery of Art DOS (Department of State)	$111,537,551	0.5%	Rank history: #18 in FY2022, #37 in FY2023, #70 in FY2024 and #43 in FY2025; down 4 since FY2020.
37	Messer Construction Co Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$102,429,920	0.4%	Rank history: not on the FY2022 list, #59 in FY2023, #69 in FY2024 and not on the FY2025 list; unchanged since FY2020.
38	Volmar Construction Inc. Top agencies GSA (General Services Administration)	$101,661,289	0.4%	Rank history: not on the FY2022–FY2024 lists and #93 in FY2025; up 106 since FY2020.
39	Black Construction-Tutor Perini JV Top agencies Navy (Department of the Navy)	$98,512,457	0.4%	Rank history: #13 in FY2022, #85 in FY2023, #24 in FY2024 and #42 in FY2025; up 62 since FY2020.
40	Rq-Aecom 2 JV Top agencies DHS (Department of Homeland Security)	$97,938,962	0.4%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
41	Camp Dresser & Mckee Inc. 5 awardees, including CDM Constructors Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) Navy (Department of the Navy)	$90,544,542	0.4%	Rank history: not on the FY2022–FY2025 lists; up 10 since FY2020.
42	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 14 since FY2020.
43	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.
44	JE Dunn Construction Group Inc. Through J.e. Dunn Construction Company Top agencies Army (Department of the Army) DHA (Defense Health Agency) USAF (Department of the Air Force)	$80,685,805	0.3%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; up 61 since FY2020.
45	Phylway Construction, L.l.c Top agencies Army (Department of the Army)	$79,645,687	0.3%	Rank history: not on the FY2022–FY2025 lists; up 27 since FY2020.
46	Donjon Marine Co., LLC Top agencies Army (Department of the Army)	$79,217,663	0.3%	Rank history: #61 in FY2022, #77 in FY2023, #99 in FY2024 and not on the FY2025 list; up 85 since FY2020.
47	Weeks Marine Inc. 2 awardees Top agencies Army (Department of the Army) USDA (Department of Agriculture) DOI (Department of the Interior)	$79,045,902	0.3%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; down 29 since FY2020.
48	Southwest Valley Constructors Co Top agencies Army (Department of the Army)	$78,403,491	0.3%	Rank history: not on the FY2022–FY2025 lists; down 45 since FY2020.
49	Nishimatsu Construction Co.,Ltd. Top agencies Army (Department of the Army)	$76,360,734	0.3%	Rank history: not on the FY2022 list, #27 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
50	Turner Construction Company 5 awardees, including Flatiron Dragados Usa, Inc., Sociedad Espanola De Montajes Industriales SA and Cobra Instalaciones Y Servicios, S.a.u. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$74,936,585	0.3%	Rank history: not on the FY2022 list, #45 in FY2023 and not on the FY2024–FY2025 lists; up 396 since FY2020.
51	Ahtna-Great Lakes E&I JV Top agencies Army (Department of the Army)	$74,719,112	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	Rigid Constructors LLC Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$74,194,038	0.3%	Rank history: not on the FY2022–FY2025 lists; up 188 since FY2020.
53	Phillips Heavy, Inc. Top agencies Army (Department of the Army)	$72,683,248	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	M. a. Mortenson Companies Inc. Through M.a. Mortenson Company Top agencies Army (Department of the Army) USDA (Department of Agriculture) DOS (Department of State)	$72,128,699	0.3%	Rank history: #37 in FY2022, #42 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
55	381 Constructors Top agencies Navy (Department of the Navy)	$70,000,000	0.3%	Rank history: #5 in FY2022, #11 in FY2023, #10 in FY2024 and #14 in FY2025; new, not ranked in FY2020.
56	Estes Bros. Const. Inc. Top agencies DOT (Department of Transportation) DOI (Department of the Interior)	$69,496,648	0.3%	Rank history: not on the FY2022–FY2023 lists, #98 in FY2024 and not on the FY2025 list; up 282 since FY2020.
57	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; up 401 since FY2020.
58	Granite-Obayashi A Joint Venture Top agencies Navy (Department of the Navy)	$68,910,030	0.3%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
59	Industrial Builders Inc. Top agencies Army (Department of the Army)	$67,115,891	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
60	Caddell-Nan A Joint Venture Top agencies Navy (Department of the Navy)	$66,555,528	0.3%	Rank history: #85 in FY2022, not on the FY2023 list, #51 in FY2024 and not on the FY2025 list; down 39 since FY2020.
61	Cook Inlet Region Inc. 6 awardees, including North Wind Construction Services, LLC, Silver Mountain Construction, LLC and Weldin Construction LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$65,748,182	0.3%	Rank history: not on the FY2022–FY2025 lists; up 23 since FY2020.
62	Advon Corporation Top agencies VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration)	$65,698,651	0.3%	Rank history: not on the FY2022–FY2025 lists; up 155 since FY2020.
63	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 233 since FY2020.
64	B & K Construction Co L.l.c Top agencies Army (Department of the Army)	$64,862,312	0.3%	Rank history: not on the FY2022 list, #58 in FY2023 and not on the FY2024–FY2025 lists; up 135 since FY2020.
65	Nana Regional Corporation Inc 5 awardees, including Portico Services LLC, Jade Creek Construction LLC and Tuvli LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOS (Department of State)	$63,964,225	0.3%	Rank history: not on the FY2022–FY2025 lists; up 241 since FY2020.
66	Rooney Holdings, Inc. Through Manhattan Construction Company LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$63,695,597	0.3%	Rank history: not on the FY2022–FY2025 lists; up 116 since FY2020.
67	Ryan Companies US Inc. Top agencies GSA (General Services Administration)	$62,336,654	0.3%	Rank history: not on the FY2022–FY2025 lists; up 41 since FY2020.
68	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	0.3%	Rank history: not on the FY2022–FY2024 lists and #89 in FY2025; up 235 since FY2020.
69	R.a. Burch Construction Co., Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$60,403,267	0.2%	Rank history: not on the FY2022 list, #44 in FY2023, not on the FY2024 list and #62 in FY2025; down 2 since FY2020.
70	Hourigan Construction Corp Top agencies Navy (Department of the Navy)	$60,361,639	0.2%	Rank history: not on the FY2022–FY2025 lists; up 158 since FY2020.
71	Valiant Construction LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$59,981,552	0.2%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
72	Balfour Beatty LLC 2 awardees, including Balfour Beatty Construction, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$59,359,760	0.2%	Rank history: #27 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; down 26 since FY2020.
73	The Dutra Group Top agencies Army (Department of the Army)	$58,965,823	0.2%	Rank history: #86 in FY2022, #38 in FY2023, #56 in FY2024 and not on the FY2025 list; up 5 since FY2020.
74	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.
75	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.
76	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.
77	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.
78	Manson Construction Co. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$54,385,968	0.2%	Rank history: #26 in FY2022, #28 in FY2023, #20 in FY2024 and #21 in FY2025; down 64 since FY2020.
79	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.
80	Randy Kinder Excavating Inc. Top agencies VA (Department of Veterans Affairs) DOT (Department of Transportation) DOE (Department of Energy)	$53,427,598	0.2%	Rank history: not on the FY2022–FY2025 lists; down 51 since FY2020.
81	J & J Contractors, Inc. Top agencies GSA (General Services Administration) Navy (Department of the Navy) Army (Department of the Army)	$51,686,332	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	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.
83	Bristol Prime Contractors, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$51,092,207	0.2%	Rank history: not on the FY2022–FY2025 lists; up 47 since FY2020.
84	Afci-Cci JV One LLC Top agencies VA (Department of Veterans Affairs)	$51,056,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
85	PCL U.S. Holdings Inc Through Nordic PCL Construction, Inc. Top agencies Army (Department of the Army)	$50,562,049	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	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.
87	Conti Enterprises Inc. 2 awardees, including Conti Federal Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$49,332,835	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	AECOM 9 awardees, including Shimmick Construction Company, 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)	$48,431,335	0.2%	Rank history: not on the FY2022–FY2025 lists; down 49 since FY2020.
89	J.f. Brennan Company, Inc. Top agencies Army (Department of the Army)	$48,014,598	0.2%	Rank history: not on the FY2022–FY2023 lists, #76 in FY2024 and not on the FY2025 list; up 94 since FY2020.
90	Tanadgusix Corporation 5 awardees, including Sand Point Services, LLC, TDX Power Services LLC and TDX Quality, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$46,838,919	0.2%	Rank history: not on the FY2022–FY2025 lists; up 81 since FY2020.
91	SGS LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$46,756,401	0.2%	Rank history: #82 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 82 since FY2020.
92	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.
93	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.
94	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.
95	Structural Associates Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$43,626,143	0.2%	Rank history: not on the FY2022–FY2025 lists; up 75 since FY2020.
96	Greenland Enterprises, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$42,558,635	0.2%	Rank history: not on the FY2022–FY2025 lists; up 141 since FY2020.
97	Emr, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$42,530,771	0.2%	Rank history: #56 in FY2022, #69 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
98	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)	$42,261,687	0.2%	Rank history: not on the FY2022–FY2025 lists; up 247 since FY2020.
99	Hatcon Insaat Taahhut Ithalat Ihracat Limited Sirketi Top agencies Army (Department of the Army)	$42,231,613	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Wood Environment & Infrastructure Solutions Inc. 2 awardees, including WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) HHS (Department of Health and Human Services)	$42,091,645	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 3,643 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC Y

Code	Net obligations	Largest contractor
Y1 Construction of Buildings	$23,266,578,064	Walsh - Turner JV II

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 $24.4 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 PSC Y contractors in FY2021?

1. Walsh - Turner JV II ($840M), 2. Bechtel Corp ($821M), 3. Hensel Phelps Construction Co ($806M), 4. Core Tech-Hdcc-Kajima LLC ($730M), 5. The Whiting-Turner Contracting Company ($661M), 6. Great Lakes Dredge & Dock Corporation ($460M), 7. The Walsh Group ($432M), 8. BAE Systems PLC ($386M), 9. B.l. Harbert Holdings, L.L.C. ($353M), 10. RQ Construction, LLC ($341M).

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