Top 32 Contractors in PSC Z1GZ: Maintenance of Other Warehouse Buildings, FY2025

Name: Top 32 Contractors in PSC Z1GZ: Maintenance of Other Warehouse Buildings, FY2025
Creator: GovTribe

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

The top 10 won 89% of FY2025 PSC Z1GZ contract dollars

Contract obligations: $16,915,358 Net of deobligations, by contracts coded PSC Z1GZ
Contractors: 34 Parent companies with an obligation
Largest contractor: Integriward LLC $5.45 million, 31.1% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 32 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Integriward LLC Top agencies Army (Department of the Army)	$5,449,795	31.1%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2024; unchanged since FY2024.
2	Nemean Solutions LLC Top agencies Army (Department of the Army)	$4,929,477	28.1%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2024; unchanged since FY2024.
3	Ohna Denken Co.,Ltd. Top agencies Navy (Department of the Navy)	$1,235,141	7.0%	Rank history: not on the FY2021–FY2024 lists; new.
4	MNS Pro Companies, Inc. Top agencies DLA (Defense Logistics Agency)	$1,073,807	6.1%	Rank history: #3 in FY2021, #4 in FY2022, #3 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	Seikitokyu Kogyo Co., Ltd. Top agencies Navy (Department of the Navy)	$751,721	4.3%	Rank history: not on the FY2021–FY2024 lists; new.
6	Witco Industries Ltd. Top agencies Navy (Department of the Navy)	$669,035	3.8%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 3 since FY2024.
7	Dynamic Facility Designs, LLC Top agencies DHS (Department of Homeland Security)	$496,276	2.8%	Rank history: #7 in FY2021, #5 in FY2022, #5 in FY2023 and #8 in FY2024; up 1 since FY2024.
8	FDLC Construction Management PA Top agencies DOI (Department of the Interior)	$399,777	2.3%	Rank history: not on the FY2021–FY2024 lists; new.
9	American Engineering Corporation Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$316,762	1.8%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; down 2 since FY2024.
10	Kyunan Co., Ltd. Top agencies DLA (Defense Logistics Agency)	$247,723	1.4%	Rank history: #9 in FY2021, not on the FY2022 list, #10 in FY2023 and not on the FY2024 list; returned.
11	Tri Coast Construction, LLC Top agencies Army (Department of the Army)	$191,623	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
12	Ameristar Contracting Group, Inc. Top agencies Navy (Department of the Navy)	$169,268	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
13	Kamikita Kensetsu Co.,Ltd. Top agencies Navy (Department of the Navy)	$163,588	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
14	Okinawa Sobi Kogyo, K.K. Top agencies Navy (Department of the Navy)	$124,295	0.7%	Rank history: #11 in FY2021 and not on the FY2022–FY2024 lists; returned.
15	Yoosin Enterprise Co.,Ltd. Top agencies DECA (Defense Commissary Agency)	$122,271	0.7%	Rank history: #19 in FY2021, #13 in FY2022, #13 in FY2023 and #15 in FY2024; unchanged since FY2024.
16	Precision Garage Doors & Gates Inc. Top agencies DOI (Department of the Interior)	$116,482	0.7%	Rank history: not on the FY2021–FY2024 lists; new.
17	Alvarez LLC Top agencies DHS (Department of Homeland Security)	$104,393	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
18	Nihon Meccs Co.,Ltd. Top agencies Navy (Department of the Navy)	$63,468	0.4%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 14 since FY2024.
19	Tecc Corporation Top agencies Navy (Department of the Navy)	$61,551	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
20	Icarus Construction Services, LLC Top agencies DHS (Department of Homeland Security)	$56,769	0.3%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; down 7 since FY2024.
21	Tsontos, Michael M., S.A. Top agencies Navy (Department of the Navy)	$52,183	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
22	Sociedad Espanola De Montajes Industriales SA Top agencies Navy (Department of the Navy)	$47,432	0.3%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; up 3 since FY2024.
23	Eiffage Infraestructuras Sau Top agencies USAF (Department of the Air Force)	$31,438	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
24	Ashland Industrial Services, LLC Top agencies DLA (Defense Logistics Agency)	$23,460	0.1%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 5 since FY2024.
25	Pierre Contracting Group LLC Top agencies DLA (Defense Logistics Agency)	$21,080	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
26	Loren Vickers Overhead Door, Inc. Top agencies DOI (Department of the Interior)	$20,508	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
27	A & D Quality Construction Co L.l.c Top agencies Commerce (Department of Commerce)	$18,442	0.1%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2024; down 9 since FY2024.
28	Stone Group Architects, Inc. Top agencies USAF (Department of the Air Force)	$17,041	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
29	Patriot Partners Group LLC Top agencies DOI (Department of the Interior)	$14,316	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
30	Norris Inc. Top agencies VA (Department of Veterans Affairs)	$11,599	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 7 since FY2024.
31	OGD Equipment Company, LLC Top agencies DOJ (Department of Justice)	$6,380	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
32	Mayointhemix LLC Top agencies DOI (Department of the Interior)	$5,928	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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32 of 34 contractors listed here. See the rest on GovTribe.

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 $17.5 million 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 PSC Z1GZ contractors in FY2025?

1. Integriward LLC ($5.45M), 2. Nemean Solutions LLC ($4.93M), 3. Ohna Denken Co.,Ltd. ($1.24M), 4. MNS Pro Companies, Inc. ($1.07M), 5. Seikitokyu Kogyo Co., Ltd. ($752K), 6. Witco Industries Ltd. ($669K), 7. Dynamic Facility Designs, LLC ($496K), 8. FDLC Construction Management PA ($400K), 9. American Engineering Corporation ($317K), 10. Kyunan Co., Ltd. ($248K).

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