Top 100 Contractors in PSC Z2: Maintenance, Alteration, Repair Nonbuildings, FY2024

Name: Top 100 Contractors in PSC Z2: Maintenance, Alteration, Repair Nonbuildings, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 11% of FY2024 PSC Z2 contract dollars

Contract obligations: $14,263,065,202 Net of deobligations, by contracts coded PSC Z2 or a code under it
Contractors: 4,360 Parent companies with an obligation
Largest contractor: Weston Solutions Holdings, Inc. $451 million, 3.1% 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	Weston Solutions Holdings, Inc. 2 awardees, including Weston Solutions Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$450,945,891	3.1%	Rank history: #65 in FY2021, #46 in FY2022, #1 in FY2023 and not on the FY2025 list; unchanged since FY2023.
2	Kgjj Engineering Solutions, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$164,169,358	1.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 198 since FY2023.
3	Ferrovial Construccion PR, LLC Top agencies Army (Department of the Army)	$150,656,464	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
4	AECOM Technical Services, Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) USAF (Department of the Air Force)	$138,468,880	0.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
5	American Engineering Corporation 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$122,595,651	0.8%	Rank history: #12 in FY2021, #14 in FY2022, #11 in FY2023 and #13 in FY2025; up 6 since FY2023.
6	RQ Construction, LLC Top agencies Navy (Department of the Navy)	$117,691,372	0.8%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and #3 in FY2025; unchanged since FY2023.
7	The Cianbro Companies Through Cianbro Corporation Top agencies Navy (Department of the Navy)	$113,231,256	0.8%	Rank history: #13 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
8	Manson Construction Co. Top agencies Navy (Department of the Navy)	$107,081,493	0.7%	Rank history: #19 in FY2021, #15 in FY2022, not on the FY2023 list and not on the FY2025 list; up 114 since FY2023.
9	Callan Marine Limited Top agencies Army (Department of the Army)	$104,974,200	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
10	Consigli Holdings Inc. Through Consigli Construction Co., Inc. Top agencies Army (Department of the Army) GSA (General Services Administration) DOI (Department of the Interior)	$104,424,149	0.7%	Rank history: not on the FY2021 list, #37 in FY2022, #12 in FY2023 and not on the FY2025 list; up 2 since FY2023.
11	NW Construction, Inc. Top agencies DOI (Department of the Interior)	$101,597,818	0.7%	Rank history: not on the FY2021 list, #10 in FY2022, #30 in FY2023 and #5 in FY2025; up 19 since FY2023.
12	Korte Construction Company Top agencies Army (Department of the Army) Navy (Department of the Navy)	$94,869,292	0.6%	Rank history: not on the FY2021 list, #83 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
13	Grunley Construction Co., Inc. Top agencies Navy (Department of the Navy) Smithsonian (Smithsonian Institution) NARA (National Archives and Records Administration)	$93,213,175	0.6%	Rank history: #41 in FY2021, not on the FY2022 list, #7 in FY2023 and #56 in FY2025; down 6 since FY2023.
14	Guidehouse Inc. Through Aptim Federal Services, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$87,853,261	0.6%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; new.
15	The Whiting-Turner Contracting Company Top agencies Navy (Department of the Navy) USAID (US Agency for International Development) GSA (General Services Administration)	$84,197,503	0.6%	Rank history: #96 in FY2021, #17 in FY2022, #2 in FY2023 and #52 in FY2025; down 13 since FY2023.
16	Knight Const. & Supply Inc Top agencies Army (Department of the Army)	$80,966,725	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 398 since FY2023.
17	Structsure Projects Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$79,124,499	0.5%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #11 in FY2025; down 13 since FY2023.
18	JE Dunn Construction Group Inc. Through J.e. Dunn Construction Company Top agencies GSA (General Services Administration) DHA (Defense Health Agency)	$76,627,479	0.5%	Rank history: #61 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 95 since FY2023.
19	Mvl-Bromgrove JV LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$74,379,295	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Honeywell International Inc. 2 awardees, including Honeywell Building Solutions SES Corp Top agencies GSA (General Services Administration) USDA (Department of Agriculture)	$70,519,581	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
21	Stronghold Engineering Inc. Top agencies Navy (Department of the Navy)	$68,227,128	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
22	CMS Corporation Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$66,982,108	0.5%	Rank history: #15 in FY2021, not on the FY2022 list, #91 in FY2023 and not on the FY2025 list; up 69 since FY2023.
23	Doyon Management Services, LLC 2 awardees Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$66,666,858	0.5%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; up 225 since FY2023.
24	WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency)	$63,742,631	0.4%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
25	Walsh Construction Company II, LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency) USAF (Department of the Air Force)	$61,330,484	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
26	Pono Aina Management LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$60,746,479	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 369 since FY2023.
27	Black Construction / Mace International Joint Venture Top agencies Navy (Department of the Navy)	$59,357,787	0.4%	Rank history: #39 in FY2021, #96 in FY2022, not on the FY2023 list and not on the FY2025 list; up 340 since FY2023.
28	Royce Construction Services, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$55,245,623	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 287 since FY2023.
29	Atkins Nuclear Secured Holdings Corporation Through Isotek Systems, LLC Top agencies DOE (Department of Energy)	$54,220,295	0.4%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
30	Hensel Phelps Construction Co 3 awardees Top agencies Navy (Department of the Navy) DOI (Department of the Interior) GSA (General Services Administration)	$53,853,975	0.4%	Rank history: #3 in FY2021, #6 in FY2022, #38 in FY2023 and #22 in FY2025; up 8 since FY2023.
31	HHI Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$53,071,398	0.4%	Rank history: #31 in FY2021, #59 in FY2022, #16 in FY2023 and not on the FY2025 list; down 15 since FY2023.
32	Watterson Construction Co Top agencies Army (Department of the Army)	$52,894,000	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Aptim Federal Services LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$50,741,094	0.3%	Rank history: #4 in FY2021, #12 in FY2022, #9 in FY2023 and not on the FY2025 list; down 24 since FY2023.
34	Etolin Strait Development Group LLC 2 awardees, including Etolin Strait Partners, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$50,687,879	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	Reyes Construction, Inc. Top agencies Navy (Department of the Navy)	$50,018,679	0.3%	Rank history: not on the FY2021 list, #82 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
36	SU-MO Builders Inc. Top agencies Navy (Department of the Navy)	$49,849,074	0.3%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 178 since FY2023.
37	Tutor Perini Corporation 2 awardees, including Perini Management Services, Inc. Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$49,638,576	0.3%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023 and not on the FY2025 list; down 19 since FY2023.
38	Silver Lake Construction LLC Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$48,686,173	0.3%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and not on the FY2025 list; up 33 since FY2023.
39	Armitage SAI JV Top agencies Army (Department of the Army) Navy (Department of the Navy)	$47,549,905	0.3%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2025 list; up 24 since FY2023.
40	Olgoonik Enterprises, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) GSA (General Services Administration)	$46,648,038	0.3%	Rank history: #33 in FY2021, #44 in FY2022, #19 in FY2023 and #25 in FY2025; down 21 since FY2023.
41	Gsi-Pond JV LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$46,003,978	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 116 since FY2023.
42	Sedona-Nasco Jv2, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$45,922,396	0.3%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; up 176 since FY2023.
43	Ross Group Construction Corporation, LLC Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) AOUSC (Administrative Office of the U.S. Courts)	$45,524,697	0.3%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and not on the FY2025 list; up 10 since FY2023.
44	Roundhouse PBN - Tepa EC 2 Joint Venture Top agencies Army (Department of the Army)	$45,377,572	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	Sea PAC Engineering Inc Top agencies Navy (Department of the Navy) DOJ (Department of Justice) Army (Department of the Army)	$45,090,777	0.3%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and #9 in FY2025; up 16 since FY2023.
46	Fargo Pacific Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$44,423,330	0.3%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2025; up 90 since FY2023.
47	Butt Construction Company, Incorporated Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$44,365,950	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 226 since FY2023.
48	CM Construction Services, Inc. 2 awardees, including WJ Contracting - Cmcs JV Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$44,180,559	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 80 since FY2023.
49	Arctic Slope Regional Corporation 3 awardees, including Asrc Builders LLC and Asrc Earthworks, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHA (Defense Health Agency)	$43,994,238	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 129 since FY2023.
50	Krbcfs-Maguire O'hara Joint Venture Top agencies USAF (Department of the Air Force)	$43,564,772	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	SES Construction and Fuel Services LLC 2 awardees, including CCI Facility Support Services, LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency) NASA (National Aeronautics and Space Administration)	$43,310,564	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Gilbane Smcc ECC LLC Through Gilbane Federal JV Top agencies USAF (Department of the Air Force)	$42,913,416	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Peter Vander Werff Construction, Inc. Top agencies Navy (Department of the Navy)	$42,580,541	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 271 since FY2023.
54	Potawatomi Defense Operations LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOI (Department of the Interior)	$40,900,792	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Amcor JV One LLC Top agencies VA (Department of Veterans Affairs)	$40,810,000	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	North Wind General Contractors LLC Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Army (Department of the Army)	$40,684,373	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	I.e.-Pacific, Inc. Top agencies Navy (Department of the Navy)	$40,210,407	0.3%	Rank history: not on the FY2021 list, #64 in FY2022, #57 in FY2023 and not on the FY2025 list; unchanged since FY2023.
58	R.a. Burch Construction Co., Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$39,118,373	0.3%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2023 and not on the FY2025 list; down 38 since FY2023.
59	Synergy Electric Company, Inc. Top agencies Navy (Department of the Navy)	$38,943,830	0.3%	Rank history: #73 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
60	Contrack ECC LLC Top agencies DLA (Defense Logistics Agency)	$38,845,779	0.3%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
61	Nan Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$38,696,730	0.3%	Rank history: not on the FY2021 list, #28 in FY2022, #33 in FY2023 and #4 in FY2025; down 28 since FY2023.
62	Midnight Sun-Centennial Kirratchiaq JV, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$38,626,486	0.3%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023 and #100 in FY2025; down 12 since FY2023.
63	Shimmick Construction Company Inc. Top agencies Army (Department of the Army)	$38,458,676	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
64	Richard Group LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice)	$37,979,535	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	Brantley Construction Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$37,881,507	0.3%	Rank history: #45 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
66	Vectrus Federal Services GMBH Top agencies Army (Department of the Army)	$37,672,837	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
67	Gilbane Building Company Top agencies Army (Department of the Army)	$37,052,505	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
68	Senate Builders & Construction Managers, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$36,840,928	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Joyce & Associates Construction, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DODEA (Department of Defense Education Activity)	$36,716,032	0.2%	Rank history: #85 in FY2021, not on the FY2022 list, #40 in FY2023 and not on the FY2025 list; down 29 since FY2023.
70	IAN Corporation Top agencies USAF (Department of the Air Force)	$35,836,340	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Bering Straits Native Corporation 6 awardees, including Stampede Ventures, Inc. and Bering Global Solutions, LLC Top agencies Navy (Department of the Navy) DOL (Department of Labor) DOJ (Department of Justice)	$35,643,654	0.2%	Rank history: #38 in FY2021, #92 in FY2022, #67 in FY2023 and #29 in FY2025; down 4 since FY2023.
72	Alltrack, Inc. Top agencies Army (Department of the Army)	$35,242,081	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Pullman Sst, Inc. Top agencies GSA (General Services Administration) DOI (Department of the Interior)	$34,487,119	0.2%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2025; new.
74	Kekolu Contracting, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$34,392,675	0.2%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; new.
75	Ironclad Services Inc Top agencies VA (Department of Veterans Affairs)	$33,779,135	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	T1-Rjs Joint Venture LLC Top agencies GSA (General Services Administration) Army (Department of the Army)	$33,681,553	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 245 since FY2023.
77	Siemens Aktiengesellschaft 2 awardees, including Siemens Government Technologies Inc. and Siemens Industry Inc. Top agencies Navy (Department of the Navy) GSA (General Services Administration) HHS (Department of Health and Human Services)	$33,657,532	0.2%	Rank history: #55 in FY2021, not on the FY2022 list, #87 in FY2023 and not on the FY2025 list; up 10 since FY2023.
78	General Electric Company Through GE Renewables US LLC Top agencies Army (Department of the Army) DOI (Department of the Interior)	$32,724,609	0.2%	Rank history: #82 in FY2021, not on the FY2022–FY2023 lists and #26 in FY2025; up 32 since FY2023.
79	G2I JBI LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$32,620,901	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 162 since FY2023.
80	J.e. Mcamis, Inc. Top agencies Army (Department of the Army)	$32,618,662	0.2%	Rank history: #9 in FY2021, #23 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
81	TNT Constructors Top agencies Navy (Department of the Navy)	$31,763,032	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Chugach Alaska Corporation 3 awardees, including Chugach Consolidated Solutions, LLC and Defense Base Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$31,603,571	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 223 since FY2023.
83	The Christman Company Top agencies Smithsonian (Smithsonian Institution) GSA (General Services Administration) DOJ (Department of Justice)	$31,206,035	0.2%	Rank history: #47 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
84	GBA Builders LLC Top agencies Army (Department of the Army)	$31,059,844	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	Reasor Building Group LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$30,982,393	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 288 since FY2023.
86	Northbank Civil and Marine, LLC Top agencies Army (Department of the Army)	$30,936,750	0.2%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2025; up 196 since FY2023.
87	Cheroenhaka Nottoway Enterprises, LLC Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) GSA (General Services Administration)	$30,705,605	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 90 since FY2023.
88	JBW Group LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$30,477,675	0.2%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; new.
89	Nova Group Inc. 2 awardees, including Northern Powerline Constructors, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$30,286,535	0.2%	Rank history: not on the FY2021 list, #36 in FY2022, not on the FY2023 list and not on the FY2025 list; up 317 since FY2023.
90	L.s. Black Constructors, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$30,269,547	0.2%	Rank history: #43 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
91	Bristol Design Build Services, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$29,886,187	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 121 since FY2023.
92	TLI Construction, Inc. 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$29,885,592	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 336 since FY2023.
93	4K Global-Acc JV, LLC Top agencies Army (Department of the Army)	$29,409,841	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 147 since FY2023.
94	Nakasato Contracting LLC Top agencies Army (Department of the Army)	$29,408,462	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Ritz Construction Inc. Top agencies SSA (Social Security Administration) Navy (Department of the Navy) DOI (Department of the Interior)	$28,727,432	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 180 since FY2023.
96	Encon Desbuild JV 2 LLC Top agencies Navy (Department of the Navy)	$28,648,213	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
97	Burchick Construction Co Inc. Top agencies AOUSC (Administrative Office of the U.S. Courts)	$28,007,485	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 78 since FY2023.
98	National Native American Construction, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOI (Department of the Interior)	$27,918,482	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and not on the FY2025 list; down 16 since FY2023.
99	Nana Regional Corporation Inc. Through Jade Creek Construction LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) GSA (General Services Administration)	$27,583,756	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	Roundhouse PBN - Tepa EC Joint Venture Top agencies Army (Department of the Army)	$27,375,008	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 4,360 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC Z2

Code	Net obligations	Largest contractor
Z2JZ Repair or Alteration of Miscellaneous Buildings	$3,196,315,547	Weston Solutions Holdings, Inc.
Z2AA Repair or Alteration of Office Buildings	$2,261,587,009	JE Dunn Construction Group Inc.
Z2AZ Repair or Alteration of Other Administrative Facilities and Service Buildings	$930,945,918	Hensel Phelps Construction Co
Z2DA Repair or Alteration of Hospitals and Infirmaries	$897,631,611	Kgjj Engineering Solutions, LLC
Z2LB Repair or Alteration of Highways/Roads/Streets/Bridges/Railways	$756,060,863	Ferrovial Construccion PR, LLC
Z2NA Repair or Alteration of Fuel Supply Facilities	$620,355,048	Weston Solutions Holdings, Inc.
Z2KA Repair or Alteration of Dams	$527,052,331	NW Construction, Inc.
Z2QA Repair or Alteration of Restoration of Real Property (Public or Private)	$486,515,234	Krbcfs-Maguire O'hara Joint Venture
Z2PZ Repair or Alteration of Other Non-Building Facilities	$467,491,874	Manson Construction Co.
Z2FC Repair or Alteration of Troop Housing Facilities	$377,671,889	Roundhouse PBN - Tepa EC 2 Joint Venture
Z2NZ Repair or Alteration of Other Utilities	$330,719,464	Synergy Electric Company, Inc.
Z2ED Repair or Alteration of Ship Construction and Repair Facilities	$327,368,004	AECOM Technical Services, Inc.
Z2BD Repair or Alteration of Airport Runways and Taxiways	$273,660,509	Black Construction / Mace International Joint Venture
Z2EZ Repair or Alteration of Other Industrial Buildings	$243,052,748	North Wind General Contractors LLC
Z2BZ Repair or Alteration of Other Airfield Structures	$173,872,864	Roundhouse PBN - Tepa EC Joint Venture
Z2NE Repair or Alteration of Water Supply Facilities	$171,244,811	TNT Constructors
Z2EB Repair or Alteration of Maintenance Buildings	$129,661,263	Callahan Construction Company
Z2FF Repair or Alteration of Penal Facilities	$125,167,652	Blasco Construction Corp
Z2FA Repair or Alteration of Family Housing Facilities	$124,860,383	American Engineering Corporation
Z2GZ Repair or Alteration of Other Warehouse Buildings	$119,277,012	Consigli Holdings Inc.
Z2FZ Repair or Alteration of Other Residential Buildings	$115,748,324	R.a. Burch Construction Co., Inc.
Z2KZ Repair or Alteration of Other Conservation and Development Facilities	$113,954,259	J.e. Mcamis, Inc.
Z2ND Repair or Alteration of Sewage and Waste Facilities	$112,722,839	SU-MO Builders Inc.
Z2CZ Repair or Alteration of Other Educational Buildings	$104,593,357	Ocean Construction Services Inc.
Z2FB Repair or Alteration of Recreational Buildings	$94,259,529	Watterson Construction Co
Z2LZ Repair or Alteration of Parking Facilities	$92,438,599	Pullman Sst, Inc.
Z2JA Repair or Alteration of Museums and Exhibition Buildings	$74,833,487	Grunley Construction Co., Inc.
Z2EC Repair or Alteration of Production Buildings	$69,609,318	Tatitlek Universal Services Inc.
Z2DZ Repair or Alteration of Other Hospital Buildings	$69,466,517	Advanced Technology Construction Corporation
Z2PA Repair or Alteration of Recreation Facilities (Non-Building)	$68,572,653	Hbhansen Construction Inc
Z2BG Repair or Alteration of Electronic and Communications Facilities	$65,415,860	American Engineering Corporation
Z2AB Repair or Alteration of Conference Space and Facilities	$51,267,940	Hitt Contracting, Inc.
Z2FD Repair or Alteration of Dining Facilities	$48,962,027	I.e.-Pacific, Inc.
Z2DB Repair or Alteration of Laboratories and Clinics	$42,135,341	Abide International, Inc.
Z2CA Repair or Alteration of Schools	$30,614,674	Pono Aina Management LLC
Z2BC Repair or Alteration of Radar and Navigational Facilities	$26,517,923	Venetic, Inc.
Z2NB Repair or Alteration of Heating and Cooling Plants	$20,615,235	Northwest Hvac Solutions, LLC
Z2BA Repair or Alteration of Air Traffic Control Towers	$15,274,153	The Matthews Group Inc.
Z2HB Repair or Alteration of Government-Owned Government-Operated (Gogo) R&D Facilities	$11,617,234	Doug Obryan Contracting Inc.

Show all 39

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 $14.8 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 Z2 contractors in FY2024?

1. Weston Solutions Holdings, Inc. ($451M), 2. Kgjj Engineering Solutions, LLC ($164M), 3. Ferrovial Construccion PR, LLC ($151M), 4. AECOM Technical Services, Inc. ($138M), 5. American Engineering Corporation ($123M), 6. RQ Construction, LLC ($118M), 7. The Cianbro Companies ($113M), 8. Manson Construction Co. ($107M), 9. Callan Marine Limited ($105M), 10. Consigli Holdings Inc. ($104M).

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