Top 100 Contractors in NAICS 2371: Utility System Construction, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 2371: Utility System Construction, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 40% of NAICS 2371 contract dollars from July 2025 through June 2026

Contract obligations: $3,043,382,452 Net of deobligations, by contracts coded NAICS 2371 or a code under it
Contractors: 850 Parent companies with an obligation
Largest contractor: Core Tech-Hdcc-Kajima LLC $219 million, 7.0% 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	Core Tech-Hdcc-Kajima LLC Top agencies Navy (Department of the Navy)	$219,000,000	7.0%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; new, not ranked in Jul 2024–Jun 2025.
2	OCI Overseas Holding Limited Through Contrack Watts Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$183,271,442	5.9%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; up 202 since Jul 2024–Jun 2025.
3	Amber Infrastructure LLC 4 awardees, including City Light & Power Jblm LLC, City Light & Power, Inc. and City Light & Power Aberdeen, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$158,872,356	5.1%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; new, not ranked in Jul 2024–Jun 2025.
4	Record Steel and Construction, Inc. Top agencies DOI (Department of the Interior)	$130,136,932	4.2%	Rank history: not on the FY2021 list, #41 in FY2022, not on the FY2023–FY2024 lists and #11 in FY2025; up 10 since Jul 2024–Jun 2025.
5	Ames Federal Contracting Group LLC Top agencies DOI (Department of the Interior)	$129,487,964	4.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
6	G.s.e. Construction Company, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$119,229,700	3.8%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Jul 2024–Jun 2025.
7	Weston Solutions Holdings Inc Through Weston Solutions Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$88,052,064	2.8%	Rank history: #3 in FY2021, #13 in FY2022, #34 in FY2023, #2 in FY2024 and #6 in FY2025; up 373 since Jul 2024–Jun 2025.
8	Nova Group, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$81,220,011	2.6%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; up 27 since Jul 2024–Jun 2025.
9	Bristol Bay Native Corporation 2 awardees, including CCI Facility Contractors, LLC and Bristol Engineering Services Company, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$73,571,133	2.4%	Rank history: #33 in FY2021, not on the FY2022 list, #7 in FY2023, #13 in FY2024 and #33 in FY2025; unchanged since Jul 2024–Jun 2025.
10	Multiquip Inc. Through Olsson Industrial Electric, Inc. Top agencies DOI (Department of the Interior)	$68,735,480	2.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
11	CCI General Contractors LLC Top agencies Navy (Department of the Navy)	$62,015,049	2.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
12	Koontz Electric Company, Incorporated Top agencies Army (Department of the Army)	$59,508,382	1.9%	Rank history: #37 in FY2021, #83 in FY2022, #32 in FY2023, #78 in FY2024 and not on the FY2025 list; up 202 since Jul 2024–Jun 2025.
13	David Boland Inc. Top agencies Army (Department of the Army)	$54,333,598	1.7%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and not on the FY2025 list; up 4 since Jul 2024–Jun 2025.
14	Goshawk, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$48,878,038	1.6%	Rank history: #41 in FY2021, #24 in FY2022, #24 in FY2023, #19 in FY2024 and #62 in FY2025; up 55 since Jul 2024–Jun 2025.
15	Absher Construction Co Top agencies Navy (Department of the Navy)	$47,418,612	1.5%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	BL Harbert International LLC Top agencies Navy (Department of the Navy)	$45,188,724	1.4%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; down 13 since Jul 2024–Jun 2025.
17	Red Point Construction, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$44,193,678	1.4%	Rank history: #21 in FY2021, not on the FY2022–FY2023 lists, #99 in FY2024 and #56 in FY2025; up 46 since Jul 2024–Jun 2025.
18	Crown Innovations, Inc. Top agencies DOT (Department of Transportation)	$44,016,169	1.4%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; up 37 since Jul 2024–Jun 2025.
19	Dawson Enterprises, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Army (Department of the Army)	$43,631,784	1.4%	Rank history: #32 in FY2021, #17 in FY2022, #25 in FY2023, #39 in FY2024 and #13 in FY2025; up 8 since Jul 2024–Jun 2025.
20	Tutor Perini Corporation 2 awardees, including Perini Management Services, Inc. and Black Micro Corporation Top agencies DOI (Department of the Interior) Navy (Department of the Navy)	$42,961,406	1.4%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
21	WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$37,355,142	1.2%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #10 in FY2025; down 9 since Jul 2024–Jun 2025.
22	Commdex, LLC Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$36,065,280	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
23	Guidehouse Inc. 2 awardees, including Aptim Federal Services, LLC and Aptim-North Wind Construction JV LLC Top agencies DLA (Defense Logistics Agency) DOE (Department of Energy)	$32,179,502	1.0%	Rank history: not on the FY2021–FY2023 lists, #5 in FY2024 and #15 in FY2025; down 18 since Jul 2024–Jun 2025.
24	Reliable Contracting Group, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$29,512,027	0.9%	Rank history: #6 in FY2021, #16 in FY2022, #10 in FY2023, #20 in FY2024 and #8 in FY2025; down 16 since Jul 2024–Jun 2025.
25	Scalfo Electric Inc. Top agencies DOT (Department of Transportation)	$25,765,854	0.8%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	CDM Constructors Inc. Top agencies DOI (Department of the Interior)	$25,340,478	0.8%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #7 in FY2025; down 24 since Jul 2024–Jun 2025.
27	Joseph J Henderson & Son Inc. Top agencies Navy (Department of the Navy)	$25,339,800	0.8%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	Hampton Roads Mechanical of Virginia, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$24,619,644	0.8%	Rank history: #53 in FY2021, #43 in FY2022, #53 in FY2023, #27 in FY2024 and #23 in FY2025; up 26 since Jul 2024–Jun 2025.
29	Red Eagle 3 JV Top agencies Army (Department of the Army)	$22,859,800	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30	Kyunan Co., Ltd. Top agencies USAF (Department of the Air Force)	$21,195,630	0.7%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
31	MEB General Contractors Inc. Top agencies Army (Department of the Army)	$20,413,161	0.7%	Rank history: not on the FY2021 list, #14 in FY2022, not on the FY2023 list, #22 in FY2024 and #21 in FY2025; down 10 since Jul 2024–Jun 2025.
32	Piril Insaat Ticaret Bilgisayar Elektronik Buro Donanimlari Anonim Sirketi Top agencies USAF (Department of the Air Force)	$20,290,716	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	Chenega Reliable Services LLC Top agencies DLA (Defense Logistics Agency)	$19,074,440	0.6%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #26 in FY2025; down 2 since Jul 2024–Jun 2025.
34	Bairco Construction Inc. Top agencies DOI (Department of the Interior)	$18,691,193	0.6%	Rank history: #52 in FY2021, not on the FY2022 list, #83 in FY2023, #62 in FY2024 and not on the FY2025 list; up 30 since Jul 2024–Jun 2025.
35	Global Engineering Services Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$17,108,085	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
36	Chandler Construction Services, Inc. Top agencies Army (Department of the Army)	$16,758,668	0.5%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and not on the FY2025 list; down 8 since Jul 2024–Jun 2025.
37	Dominion Resources Inc. Through Dominion Privatization Texas, LLC Top agencies Army (Department of the Army)	$16,353,817	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Michels Construction, Inc. Top agencies DOI (Department of the Interior)	$16,131,236	0.5%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Sandhills Utility Services, LLC Top agencies Army (Department of the Army)	$15,925,307	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	Blue Cord Design and Construction, LLC Top agencies VA (Department of Veterans Affairs)	$15,551,504	0.5%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 136 since Jul 2024–Jun 2025.
41	Billy W. Jarrett Construction Company, Inc. Top agencies VA (Department of Veterans Affairs)	$15,258,062	0.5%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	Berger Cummins J V Top agencies Army (Department of the Army)	$13,971,426	0.4%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #85 in FY2024 and #16 in FY2025; down 8 since Jul 2024–Jun 2025.
43	Bethel Downstream JV Top agencies Navy (Department of the Navy)	$13,776,600	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	JBW Group LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$13,687,063	0.4%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #36 in FY2025; up 43 since Jul 2024–Jun 2025.
45	Randy Kinder Excavating Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$13,674,029	0.4%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; unchanged since Jul 2024–Jun 2025.
46	CMS Corporation Top agencies DLA (Defense Logistics Agency)	$13,497,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	Utility Construction Company, Inc. Top agencies Navy (Department of the Navy)	$12,703,843	0.4%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
48	Etolin Strait Associates LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$12,504,200	0.4%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #35 in FY2025; down 4 since Jul 2024–Jun 2025.
49	Arctic Slope Regional Corporation Through Asrc Prime Constructors, LLC Top agencies Army (Department of the Army)	$12,404,745	0.4%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
50	Mckenzie Construction & Site Development LLC Top agencies DOI (Department of the Interior)	$12,121,532	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
51	Boyer Commercial Construction Inc. Top agencies VA (Department of Veterans Affairs)	$11,740,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Sea PAC Engineering Inc Top agencies USAF (Department of the Air Force) DOJ (Department of Justice)	$11,640,970	0.4%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
53	Wendler, Inc. Top agencies Army (Department of the Army)	$11,575,000	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
54	Aaecon General Contracting LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) Army (Department of the Army)	$11,346,979	0.4%	Rank history: #76 in FY2021, not on the FY2022–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	A. West Enterprise, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$11,020,504	0.4%	Rank history: #90 in FY2021, not on the FY2022 list, #42 in FY2023, not on the FY2024 list and #53 in FY2025; up 76 since Jul 2024–Jun 2025.
56	Prairie Band Construction, Inc. Top agencies Army (Department of the Army)	$10,998,670	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	Orcom a Division of Ortega Companies Inc Top agencies DOI (Department of the Interior)	$10,795,190	0.3%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and not on the FY2025 list; down 1 since Jul 2024–Jun 2025.
58	South Bay EDC Inc. Top agencies Navy (Department of the Navy)	$10,711,788	0.3%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and not on the FY2025 list; down 51 since Jul 2024–Jun 2025.
59	Fiber Business Solutions Group Inc. Top agencies Army (Department of the Army)	$10,544,233	0.3%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; up 309 since Jul 2024–Jun 2025.
60	Briston Construction LLC Top agencies VA (Department of Veterans Affairs)	$10,090,128	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
61	Sawtooth Construction JV II LLC Top agencies VA (Department of Veterans Affairs)	$9,999,999	0.3%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
62	Guardian Construction, Inc. Top agencies DOI (Department of the Interior)	$9,827,287	0.3%	Rank history: not on the FY2021–FY2025 lists; up 76 since Jul 2024–Jun 2025.
63	Mig Gov, LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs)	$8,926,889	0.3%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; up 8 since Jul 2024–Jun 2025.
64	Environmental Chemical Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$8,884,492	0.3%	Rank history: not on the FY2021 list, #1 in FY2022 and not on the FY2023–FY2025 lists; up 241 since Jul 2024–Jun 2025.
65	Northbank Civil and Marine, LLC Top agencies Army (Department of the Army)	$8,643,870	0.3%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #57 in FY2025; up 10 since Jul 2024–Jun 2025.
66	Loduca Associates, Inc. Top agencies Army (Department of the Army)	$8,367,796	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
67	Porr Government Services Benelux Top agencies Army (Department of the Army)	$8,093,999	0.3%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Jul 2024–Jun 2025.
68	Lead Builders Inc. Top agencies Navy (Department of the Navy)	$8,006,093	0.3%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #58 in FY2025; up 17 since Jul 2024–Jun 2025.
69	Silver Mountain Weston SB JV LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$7,904,194	0.3%	Rank history: not on the FY2021 list, #51 in FY2022, #74 in FY2023, #42 in FY2024 and #79 in FY2025; up 4 since Jul 2024–Jun 2025.
70	S & K Design Build LLC Top agencies USAF (Department of the Air Force)	$7,844,620	0.3%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	Ideal Engineering Solutions P.s.c Top agencies DOT (Department of Transportation)	$7,674,040	0.2%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	Heritage Homes LLC Top agencies Army (Department of the Army)	$7,567,754	0.2%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; down 23 since Jul 2024–Jun 2025.
73	Jacobs Government Services Company Through Jacobs Project Management Co. Top agencies DOI (Department of the Interior)	$7,554,611	0.2%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #5 in FY2025; down 72 since Jul 2024–Jun 2025.
74	Panhandle Power Solutions LLC Top agencies Army (Department of the Army) NASA (National Aeronautics and Space Administration)	$7,513,777	0.2%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #60 in FY2025; down 15 since Jul 2024–Jun 2025.
75	Sunflow Energy Corp Top agencies DOS (Department of State)	$7,286,813	0.2%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Jul 2024–Jun 2025.
76	Hoolaulima Government Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$7,271,715	0.2%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #82 in FY2025; down 47 since Jul 2024–Jun 2025.
77	RJS Construction, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$6,761,877	0.2%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 105 since Jul 2024–Jun 2025.
78	Tehama Technical Services, LLC Top agencies DOI (Department of the Interior)	$6,590,630	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	PCL Construction Inc Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$6,250,000	0.2%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #25 in FY2025; down 69 since Jul 2024–Jun 2025.
80	Structural Associates Inc. Top agencies Army (Department of the Army)	$6,179,660	0.2%	Rank history: #20 in FY2021, #12 in FY2022, not on the FY2023 list, #86 in FY2024 and #65 in FY2025; down 1 since Jul 2024–Jun 2025.
81	Vixen LLC Top agencies Army (Department of the Army)	$5,996,721	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Aytekin Serol Insaat Taahhut Muhendislik Anonim Sirketi Top agencies DLA (Defense Logistics Agency)	$5,896,723	0.2%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023, not on the FY2024 list and #50 in FY2025; down 14 since Jul 2024–Jun 2025.
83	Ames 1 LLC Top agencies DOI (Department of the Interior)	$5,855,604	0.2%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 344 since Jul 2024–Jun 2025.
84	B2 Constructors, LLC Top agencies VA (Department of Veterans Affairs)	$5,807,894	0.2%	Rank history: not on the FY2021 list, #93 in FY2022, not on the FY2023–FY2024 lists and #81 in FY2025; up 346 since Jul 2024–Jun 2025.
85	Ocean Construction Services Inc. Top agencies Navy (Department of the Navy)	$5,716,479	0.2%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023, #92 in FY2024 and not on the FY2025 list; up 61 since Jul 2024–Jun 2025.
86	SES Energy Services LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$5,318,914	0.2%	Rank history: not on the FY2021 list, #32 in FY2022, #47 in FY2023, #80 in FY2024 and not on the FY2025 list; down 6 since Jul 2024–Jun 2025.
87	Agco-Ps JV Top agencies Army (Department of the Army)	$5,222,331	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	Pond Constructors Inc. Top agencies Navy (Department of the Navy)	$5,212,851	0.2%	Rank history: #28 in FY2021, #39 in FY2022, not on the FY2023–FY2024 lists and #76 in FY2025; up 69 since Jul 2024–Jun 2025.
89	Tybe-Garney Federal JV LLC Top agencies Navy (Department of the Navy)	$5,166,615	0.2%	Rank history: not on the FY2021 list, #5 in FY2022, #12 in FY2023, not on the FY2024 list and #61 in FY2025; up 13 since Jul 2024–Jun 2025.
90	ANCHOR-41 Construction LLC Top agencies VA (Department of Veterans Affairs)	$5,157,586	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
91	Wright Bros LLC Top agencies USDA (Department of Agriculture)	$5,015,701	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92	DFW Cad Services LLC Top agencies DOJ (Department of Justice)	$5,004,608	0.2%	Rank history: not on the FY2021–FY2025 lists; up 175 since Jul 2024–Jun 2025.
93	East Coast Powerline LLC Top agencies DOE (Department of Energy)	$5,000,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and not on the FY2024–FY2025 lists; up 164 since Jul 2024–Jun 2025.
94	International Towers LLC Top agencies DOT (Department of Transportation) Commerce (Department of Commerce)	$4,965,074	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; down 8 since Jul 2024–Jun 2025.
95	DE LA HOZ Builders Inc Top agencies USAF (Department of the Air Force)	$4,906,558	0.2%	Rank history: not on the FY2021–FY2023 lists, #89 in FY2024 and #88 in FY2025; up 85 since Jul 2024–Jun 2025.
96	Prairie Band-Compass JV LLC Top agencies DLA (Defense Logistics Agency)	$4,840,047	0.2%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
97	Synergy Electric Company, Inc. Top agencies Navy (Department of the Navy)	$4,839,825	0.2%	Rank history: #4 in FY2021, #30 in FY2022, #35 in FY2023, #8 in FY2024 and #54 in FY2025; down 84 since Jul 2024–Jun 2025.
98	Korea Housing Management Co.,Ltd Top agencies Army (Department of the Army)	$4,783,277	0.2%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 44 since Jul 2024–Jun 2025.
99	Cdeem Co Top agencies VA (Department of Veterans Affairs)	$4,776,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	A & H-Ambica JV LLC Top agencies USAF (Department of the Air Force)	$4,580,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.

Show 75 more

100 of 850 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 2371

Code	Net obligations	Largest contractor
23713 Power and Communication Line and Related Structures Construction	$1,375,037,642	Core Tech-Hdcc-Kajima LLC
23711 Water and Sewer Line and Related Structures Construction	$1,098,708,689	Record Steel and Construction, Inc.
23712 Oil and Gas Pipeline and Related Structures Construction	$569,636,121	Weston Solutions Holdings Inc

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 $3.13 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 2371 contractors in Jul 2025–Jun 2026?

1. Core Tech-Hdcc-Kajima LLC ($219M), 2. OCI Overseas Holding Limited ($183M), 3. Amber Infrastructure LLC ($159M), 4. Record Steel and Construction, Inc. ($130M), 5. Ames Federal Contracting Group LLC ($129M), 6. G.s.e. Construction Company, Inc. ($119M), 7. Weston Solutions Holdings Inc ($88.1M), 8. Nova Group, Inc. ($81.2M), 9. Bristol Bay Native Corporation ($73.6M), 10. Multiquip Inc. ($68.7M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login