Top 100 Contractors in NAICS 23621: Industrial Building Construction, FY2025

Name: Top 100 Contractors in NAICS 23621: Industrial Building Construction, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 77% of FY2025 NAICS 23621 contract dollars

Contract obligations: $1,176,791,752 Net of deobligations, by contracts coded NAICS 23621 or a code under it
Contractors: 221 Parent companies with an obligation
Largest contractor: Bechtel Corp $273 million, 22.7% 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	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$272,595,908	22.7%	Rank history: #4 in FY2021, #6 in FY2022, #1 in FY2023 and #2 in FY2024; up 1 since FY2024.
2	Parsons Corporation 2 awardees, including Parsons Government Services Inc. Top agencies Army (Department of the Army)	$176,777,693	14.7%	Rank history: #1 in FY2021, #7 in FY2022, #2 in FY2023 and #11 in FY2024; up 9 since FY2024.
3	J.e. Dunn Construction Company Top agencies GSA (General Services Administration)	$150,748,965	12.6%	Rank history: not on the FY2021–FY2024 lists; up 156 since FY2024.
4	Northrop Grumman Corporation 2 awardees, including Northrop Grumman Systems Corp Top agencies Navy (Department of the Navy)	$112,721,352	9.4%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and not on the FY2024 list; returned.
5	Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$78,527,000	6.5%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 2 since FY2024.
6	Tutor Perini Corporation Through Perini Management Services, Inc. Top agencies Army (Department of the Army)	$35,835,160	3.0%	Rank history: not on the FY2021–FY2024 lists; new.
7	Birmingham Industrial Construction, LLC Top agencies NASA (National Aeronautics and Space Administration)	$28,434,080	2.4%	Rank history: #12 in FY2021, #28 in FY2022, #57 in FY2023 and #13 in FY2024; up 6 since FY2024.
8	Walsh Federal LLC Top agencies Navy (Department of the Navy)	$26,283,386	2.2%	Rank history: #47 in FY2021, #3 in FY2022, #3 in FY2023 and #5 in FY2024; down 3 since FY2024.
9	A & H-Ambica JV LLC Top agencies NASA (National Aeronautics and Space Administration)	$21,845,152	1.8%	Rank history: #8 in FY2021, #88 in FY2022, not on the FY2023 list and #76 in FY2024; up 67 since FY2024.
10	Healtheon, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$20,189,829	1.7%	Rank history: #11 in FY2021, #1 in FY2022, #7 in FY2023 and #9 in FY2024; down 1 since FY2024.
11	Richard Group LLC Top agencies Army (Department of the Army)	$17,021,678	1.4%	Rank history: not on the FY2021–FY2024 lists; new.
12	CCI Prime Contractors, LLC 3 awardees Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DOJ (Department of Justice)	$15,818,914	1.3%	Rank history: not on the FY2021 list, #49 in FY2022, #11 in FY2023 and #12 in FY2024; unchanged since FY2024.
13	Advon Corporation Top agencies NASA (National Aeronautics and Space Administration)	$14,166,903	1.2%	Rank history: #20 in FY2021, #12 in FY2022, #20 in FY2023 and #18 in FY2024; up 5 since FY2024.
14	Sedona- Nasco Joint Venture Top agencies Army (Department of the Army)	$12,451,078	1.0%	Rank history: not on the FY2021 list, #19 in FY2022, #12 in FY2023 and #8 in FY2024; down 6 since FY2024.
15	North Wind General Contractors LLC Top agencies USAF (Department of the Air Force)	$11,826,077	1.0%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 18 since FY2024.
16	M. a. Mortenson Companies Inc. Through M.a. Mortenson Company Top agencies Army (Department of the Army)	$10,185,702	0.8%	Rank history: not on the FY2021–FY2023 lists and #6 in FY2024; down 10 since FY2024.
17	Diversified Construction of Oklahoma, Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$9,853,641	0.8%	Rank history: #23 in FY2021, #17 in FY2022, #56 in FY2023 and #7 in FY2024; down 10 since FY2024.
18	Cheroenhaka Nottoway Enterprises, LLC Top agencies Navy (Department of the Navy)	$7,347,435	0.6%	Rank history: not on the FY2021–FY2024 lists; up 212 since FY2024.
19	SK Construction and Management Inc. Top agencies Army (Department of the Army)	$7,187,170	0.6%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; down 3 since FY2024.
20	Maguire-Ohara Construction Inc. Top agencies USAF (Department of the Air Force)	$7,128,517	0.6%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and #27 in FY2024; up 7 since FY2024.
21	Four Tribes Construction Services, LLC Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services)	$6,476,139	0.5%	Rank history: #19 in FY2021, #55 in FY2022, #68 in FY2023 and #38 in FY2024; up 17 since FY2024.
22	Firelake Construction Inc Top agencies DOI (Department of the Interior)	$6,465,536	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
23	Civil Works Contracting LLC Top agencies NASA (National Aeronautics and Space Administration)	$6,394,509	0.5%	Rank history: #21 in FY2021, #30 in FY2022, #13 in FY2023 and #78 in FY2024; up 55 since FY2024.
24	Maven Construction & Environmental LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$5,963,291	0.5%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2024; up 42 since FY2024.
25	Kumsung Construction Co., Ltd. Top agencies DLA (Defense Logistics Agency)	$5,676,000	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
26	Warden Construction Corporation Top agencies USAF (Department of the Air Force)	$5,552,550	0.5%	Rank history: #95 in FY2021, #60 in FY2022, #28 in FY2023 and #72 in FY2024; up 46 since FY2024.
27	Guardian Construction, Inc. Top agencies USAF (Department of the Air Force)	$4,987,007	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
28	Olgoonik General, LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$4,803,973	0.4%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 2 since FY2024.
29	Ritz Construction Inc. Top agencies DODEA (Department of Defense Education Activity) DOI (Department of the Interior)	$4,512,733	0.4%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2024; up 56 since FY2024.
30	Serco Inc Top agencies Army (Department of the Army)	$4,268,476	0.4%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2024; down 29 since FY2024.
31	MX Construction, Inc. Top agencies Army (Department of the Army)	$4,258,039	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
32	Dawson Mcg, Inc. Top agencies DLA (Defense Logistics Agency)	$3,880,464	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
33	Precision Resources Inc. Through Precision Mechanical Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,681,389	0.3%	Rank history: not on the FY2021–FY2024 lists; up 134 since FY2024.
34	Cody M Stevens Construction Inc. Top agencies Navy (Department of the Navy)	$3,395,243	0.3%	Rank history: not on the FY2021 list, #85 in FY2022, #69 in FY2023 and #45 in FY2024; up 11 since FY2024.
35	Saw Contracting, Inc. Top agencies DLA (Defense Logistics Agency)	$3,257,600	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
36	Kunj Construction Corporation Top agencies Treasury (Department of the Treasury)	$3,062,161	0.3%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; down 12 since FY2024.
37	Polk & Associates Construction Inc. Top agencies Navy (Department of the Navy)	$2,868,840	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
38	Drace Construction Corp Top agencies NASA (National Aeronautics and Space Administration)	$2,463,065	0.2%	Rank history: not on the FY2021 list, #13 in FY2022, not on the FY2023 list and #15 in FY2024; down 23 since FY2024.
39	Midlands Mechanical, Inc. Top agencies Treasury (Department of the Treasury)	$2,424,569	0.2%	Rank history: #72 in FY2021, #81 in FY2022, #61 in FY2023 and #91 in FY2024; up 52 since FY2024.
40	Greenland Enterprises Inc. Top agencies Army (Department of the Army)	$2,088,062	0.2%	Rank history: #6 in FY2021, not on the FY2022 list, #30 in FY2023 and #49 in FY2024; up 9 since FY2024.
41	Excell Construction Corp Top agencies Navy (Department of the Navy)	$2,028,129	0.2%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; down 5 since FY2024.
42	Sea PAC Engineering Inc Top agencies DOS (Department of State)	$1,922,293	0.2%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and #64 in FY2024; up 22 since FY2024.
43	Martinez Services, Inc. Top agencies Navy (Department of the Navy)	$1,898,763	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and not on the FY2024 list; up 75 since FY2024.
44	Forus Contracting, Inc. Top agencies Navy (Department of the Navy)	$1,871,200	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
45	Armitage Architecture Inc. Top agencies Navy (Department of the Navy)	$1,845,947	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
46	Hartford Accident & Indemnity Co Top agencies HHS (Department of Health and Human Services)	$1,803,685	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
47	Swan Contracting LLC Top agencies Navy (Department of the Navy)	$1,791,609	0.1%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 26 since FY2024.
48	Creativity Global Consultancy Limited Top agencies USAF (Department of the Air Force)	$1,789,743	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
49	Baron Communications Incorporated Top agencies Navy (Department of the Navy)	$1,759,311	0.1%	Rank history: not on the FY2021–FY2024 lists; up 83 since FY2024.
50	Puyenpa Technologies LLC Through Puyenpa Construction, LLC Top agencies Navy (Department of the Navy)	$1,670,001	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
51	Kelly Construction Services Inc. Top agencies Navy (Department of the Navy)	$1,580,851	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
52	Cybarco Contracting Limited Top agencies Navy (Department of the Navy)	$1,565,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
53	Sabree, Inc. Top agencies Navy (Department of the Navy)	$1,547,971	0.1%	Rank history: #48 in FY2021, not on the FY2022 list, #62 in FY2023 and not on the FY2024 list; returned.
54	Jakambaga General Contractors Limited Top agencies USAF (Department of the Air Force)	$1,545,390	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
55	Mcintyre Brothers LLC Top agencies Navy (Department of the Navy)	$1,507,305	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, not on the FY2023 list and #95 in FY2024; up 40 since FY2024.
56	Creative Builds Corporation Top agencies DHS (Department of Homeland Security)	$1,495,411	0.1%	Rank history: not on the FY2021–FY2024 lists; up 69 since FY2024.
57	Bizsolutions 360 Inc. Top agencies Navy (Department of the Navy)	$1,476,594	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
58	Kwaan RB Construction and Facility Services, LLC Top agencies USAF (Department of the Air Force)	$1,439,095	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
59	Lorenzon Construction, Inc. Top agencies Treasury (Department of the Treasury)	$1,400,635	0.1%	Rank history: #77 in FY2021, #43 in FY2022, #42 in FY2023 and #19 in FY2024; down 40 since FY2024.
60	SPR Construction Corp Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$1,342,774	0.1%	Rank history: not on the FY2021–FY2024 lists; up 86 since FY2024.
61	K & K Industries Inc Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$1,337,881	0.1%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023 and #42 in FY2024; down 19 since FY2024.
62	Red Point Construction, LLC Top agencies USAF (Department of the Air Force)	$1,289,412	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
63	Koman Government Solutions LLC Top agencies Navy (Department of the Navy)	$1,142,205	0.1%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 23 since FY2024.
64	Matos Builders LLC Top agencies HHS (Department of Health and Human Services)	$1,111,579	0.1%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2024; down 17 since FY2024.
65	Chugach Pacific Solutions LLC Top agencies USAF (Department of the Air Force)	$1,001,553	0.1%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and not on the FY2024 list; returned.
66	The Riff Group, LLC Top agencies Treasury (Department of the Treasury)	$946,512	0.1%	Rank history: #42 in FY2021, #26 in FY2022, #21 in FY2023 and #35 in FY2024; down 31 since FY2024.
67	Granite-Obayashi A Joint Venture Top agencies Navy (Department of the Navy)	$914,751	0.1%	Rank history: #5 in FY2021, #15 in FY2022, #37 in FY2023 and #71 in FY2024; up 4 since FY2024.
68	Veyka Insaat Mimarlik Muhendislik Sanayi IC VE Dis Ticaret Anonim Sirketi Top agencies DOS (Department of State)	$886,055	0.1%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023 and not on the FY2024 list; up 39 since FY2024.
69	Saudi Naval Support Co. Top agencies USAF (Department of the Air Force)	$863,190	0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2023–FY2024 lists; up 65 since FY2024.
70	Raad Construction Group LLC Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$814,169	0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #75 in FY2024; up 5 since FY2024.
71	DFS Construction, LLC Top agencies DOS (Department of State)	$777,289	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
72	Sauer Construction LLC Top agencies NASA (National Aeronautics and Space Administration)	$768,650	0.1%	Rank history: not on the FY2021–FY2024 lists; up 71 since FY2024.
73	Cinka Construction & Consulting Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$731,555	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Mastercraft Mechanical Contractors, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$679,022	0.1%	Rank history: not on the FY2021 list, #87 in FY2022, #49 in FY2023 and not on the FY2024 list; up 43 since FY2024.
75	Washington Office Interiors LLC Top agencies HHS (Department of Health and Human Services)	$668,968	0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; down 36 since FY2024.
76	Corenic Construction Group LLC Top agencies Commerce (Department of Commerce)	$668,729	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; down 21 since FY2024.
77	Blue Construction Services LLC Top agencies Navy (Department of the Navy)	$580,432	<0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #78 in FY2023 and #56 in FY2024; down 21 since FY2024.
78	Exbon Development Inc. Top agencies USAF (Department of the Air Force)	$571,460	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
79	Southeast Cherokee Construction, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$565,936	<0.1%	Rank history: #68 in FY2021, #37 in FY2022, #19 in FY2023 and #50 in FY2024; down 29 since FY2024.
80	Jess Mar Constructores, S.A. Top agencies DOS (Department of State)	$562,720	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
81	Morello Construction LLC Top agencies DOI (Department of the Interior)	$557,349	<0.1%	Rank history: not on the FY2021 list, #25 in FY2022, #35 in FY2023 and #80 in FY2024; down 1 since FY2024.
82	DRL Services LLC Top agencies Navy (Department of the Navy)	$527,026	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	E.j.wallace Enterprises, Inc. Top agencies USAF (Department of the Air Force)	$521,084	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
84	Seneca Federal Solutions, LLC Top agencies Army (Department of the Army)	$504,446	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 18 since FY2024.
85	Tremco LLC Top agencies Navy (Department of the Navy)	$461,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
86	CTI Environmental Inc Top agencies DHS (Department of Homeland Security)	$459,111	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
87	Mickan Generalbaugesellschaft Amberg MBH & Co. KG Top agencies Army (Department of the Army)	$438,966	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
88	Francisco Rigoberto Castro Barrera Top agencies USSOCOM (United States Special Operations Command)	$435,918	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Qcm, Inc. Top agencies GSA (General Services Administration)	$425,400	<0.1%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; down 15 since FY2024.
90	Wayss & Freytag Ingenieurbau AG Top agencies DOS (Department of State)	$423,262	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
91	Bozdemir Construction LLC Top agencies DOS (Department of State)	$419,734	<0.1%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2024; down 54 since FY2024.
92	New Dominion Construction LLC Top agencies Navy (Department of the Navy)	$416,733	<0.1%	Rank history: #41 in FY2021, #76 in FY2022, not on the FY2023 list and #69 in FY2024; down 23 since FY2024.
93	Bering Straits Native Corporation 2 awardees, including Stampede Ventures, Inc. Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force)	$409,565	<0.1%	Rank history: #38 in FY2021, #16 in FY2022, #76 in FY2023 and #54 in FY2024; down 39 since FY2024.
94	Serena Construction LLC Top agencies Navy (Department of the Navy)	$400,908	<0.1%	Rank history: not on the FY2021 list, #39 in FY2022, #95 in FY2023 and #67 in FY2024; down 27 since FY2024.
95	Buildtec Corp Top agencies Navy (Department of the Navy)	$399,905	<0.1%	Rank history: #57 in FY2021, #24 in FY2022, #70 in FY2023 and #48 in FY2024; down 47 since FY2024.
96	QA Engineering LLC Top agencies Army (Department of the Army)	$393,979	<0.1%	Rank history: not on the FY2021–FY2022 lists, #16 in FY2023 and not on the FY2024 list; returned.
97	Brasfield & Gorrie LLC Top agencies Army (Department of the Army)	$388,636	<0.1%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2023 and not on the FY2024 list; up 78 since FY2024.
98	Snodgrass Contracting LLC Top agencies Army (Department of the Army)	$384,619	<0.1%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and #25 in FY2024; down 73 since FY2024.
99	John C. Grimberg Co., Inc. Top agencies Navy (Department of the Navy)	$373,344	<0.1%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2024; down 78 since FY2024.
100	Caddell-Nan A Joint Venture Top agencies Navy (Department of the Navy)	$372,161	<0.1%	Rank history: not on the FY2021 list, #10 in FY2022 and not on the FY2023–FY2024 lists; up 68 since FY2024.

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100 of 221 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 23621

Code	Net obligations	Largest contractor
236210 Industrial Building Construction	$1,176,791,752	Bechtel Corp

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 $1.2 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 23621 contractors in FY2025?

1. Bechtel Corp ($273M), 2. Parsons Corporation ($177M), 3. J.e. Dunn Construction Company ($151M), 4. Northrop Grumman Corporation ($113M), 5. Seqirus Inc. ($78.5M), 6. Tutor Perini Corporation ($35.8M), 7. Birmingham Industrial Construction, LLC ($28.4M), 8. Walsh Federal LLC ($26.3M), 9. A & H-Ambica JV LLC ($21.8M), 10. Healtheon, Inc. ($20.2M).

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