Top 36 Contractors in PSC Z1BZ: Maintenance of Other Airfield Structures, Jul 2025–Jun 2026

Name: Top 36 Contractors in PSC Z1BZ: Maintenance of Other Airfield Structures, 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 75% of PSC Z1BZ contract dollars from July 2025 through June 2026

Contract obligations: $19,607,874 Net of deobligations, by contracts coded PSC Z1BZ
Contractors: 36 Parent companies with an obligation
Largest contractor: Mckenzie Construction & Site Development LLC $2.97 million, 14.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 36 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Mckenzie Construction & Site Development LLC Top agencies Navy (Department of the Navy)	$2,974,431	14.4%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; new, not ranked in Jul 2024–Jun 2025.
2	Witco Industries Ltd. Top agencies USAF (Department of the Air Force)	$2,613,187	12.7%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Jul 2024–Jun 2025.
3	Upstate Construction Services Inc. Top agencies USAF (Department of the Air Force)	$2,286,684	11.1%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; new, not ranked in Jul 2024–Jun 2025.
4	MDM Construction Supply, LLC Top agencies Army (Department of the Army)	$1,669,500	8.1%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Jul 2024–Jun 2025.
5	Onopa Services LLC Top agencies USAF (Department of the Air Force)	$1,403,115	6.8%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	Grunley Construction Co., Inc. Top agencies Navy (Department of the Navy)	$1,371,275	6.6%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #7 in FY2025; down 5 since Jul 2024–Jun 2025.
7	OAC Action Construction Corp. Top agencies USAF (Department of the Air Force)	$978,010	4.7%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; new, not ranked in Jul 2024–Jun 2025.
8	Dmyles Inc. Top agencies USAF (Department of the Air Force)	$789,400	3.8%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; up 22 since Jul 2024–Jun 2025.
9	Hathazi Garage Doors LLC Top agencies USAF (Department of the Air Force)	$719,690	3.5%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; new, not ranked in Jul 2024–Jun 2025.
10	Omega Belt Built Construction Services JV, LLC Top agencies DHS (Department of Homeland Security)	$700,621	3.4%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Jul 2024–Jun 2025.
11	Kamikita Kensetsu Co.,Ltd. Top agencies Navy (Department of the Navy)	$643,471	3.1%	Rank history: #31 in FY2021, #35 in FY2022, #32 in FY2023, #37 in FY2024 and #10 in FY2025; up 23 since Jul 2024–Jun 2025.
12	Consorzio Gemmo DI Bella Top agencies Navy (Department of the Navy)	$542,955	2.6%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Jul 2024–Jun 2025.
13	T&H Services, LLC Top agencies Navy (Department of the Navy)	$443,368	2.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #14 in FY2025; up 1 since Jul 2024–Jun 2025.
14	Surecan LLC Top agencies USAF (Department of the Air Force)	$437,950	2.1%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2023, #16 in FY2024 and #15 in FY2025; down 2 since Jul 2024–Jun 2025.
15	HID Global Corp Through Assa Abloy Entrance Systems US Inc. Top agencies USAF (Department of the Air Force)	$418,940	2.0%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #11 in FY2025; down 5 since Jul 2024–Jun 2025.
16	ADB Safegate Americas LLC Top agencies USAF (Department of the Air Force)	$369,157	1.8%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #19 in FY2025; up 1 since Jul 2024–Jun 2025.
17	BL Harbert International LLC Top agencies Army (Department of the Army)	$330,290	1.6%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #12 in FY2025; down 11 since Jul 2024–Jun 2025.
18	Green Leaf Builders Corbara JV Top agencies Army (Department of the Army)	$315,579	1.5%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023, not on the FY2024 list and #13 in FY2025; up 5 since Jul 2024–Jun 2025.
19	Blue Construction Services LLC Top agencies Navy (Department of the Navy)	$302,054	1.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
20	Skookum Educational Programs Top agencies Navy (Department of the Navy)	$260,738	1.3%	Rank history: not on the FY2021 list, #21 in FY2022, #20 in FY2023, #25 in FY2024 and #18 in FY2025; up 1 since Jul 2024–Jun 2025.
21	X Cell Management Inc. Top agencies Army (Department of the Army)	$227,723	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
22	Suzuki Kensetsu Kogyo Co.,Ltd. Top agencies Navy (Department of the Navy)	$136,552	0.7%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Shonan Shichiri Engineering LLC Top agencies Navy (Department of the Navy)	$118,159	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
24	Pyramid Contracting LLC Top agencies USAF (Department of the Air Force)	$103,400	0.5%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #22 in FY2025; down 4 since Jul 2024–Jun 2025.
25	Geyer Fire Protection LLC Top agencies USAF (Department of the Air Force)	$73,910	0.4%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Yibon Construction Co., Ltd. Top agencies Army (Department of the Army)	$71,239	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27	Cinteot Inc. Top agencies Army (Department of the Army)	$69,611	0.3%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	Acty Co., Ltd. Top agencies USAF (Department of the Air Force)	$53,214	0.3%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
29	EDL Construction Inc. Top agencies USAF (Department of the Air Force)	$39,600	0.2%	Rank history: not on the FY2021 list, #27 in FY2022, not on the FY2023 list, #43 in FY2024 and #27 in FY2025; up 6 since Jul 2024–Jun 2025.
30	Valiant Integrated Services LLC Through Valiant / Alca JV LLC Top agencies Navy (Department of the Navy)	$37,935	0.2%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
31	Multivariable Systems Tech, LLC Top agencies USAF (Department of the Air Force)	$33,220	0.2%	Rank history: #29 in FY2021, #28 in FY2022, #34 in FY2023, #30 in FY2024 and #28 in FY2025; down 6 since Jul 2024–Jun 2025.
32	JWM Enterprises, LLC Top agencies USDA (Department of Agriculture)	$24,960	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
33	Industrial Door Contractors, Inc. Top agencies USAF (Department of the Air Force)	$22,142	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
34	Superior Roof Restorations LLC Top agencies USAF (Department of the Air Force)	$17,100	0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35	Vanguard Pacific LLC Top agencies USAF (Department of the Air Force)	$8,782	<0.1%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and not on the FY2025 list; down 16 since Jul 2024–Jun 2025.
36	I E C S R L Top agencies USAF (Department of the Air Force)	$7,088	<0.1%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #36 in FY2025; down 27 since Jul 2024–Jun 2025.

Show all 36

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 $20.6 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.
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 PSC Z1BZ contractors in Jul 2025–Jun 2026?

1. Mckenzie Construction & Site Development LLC ($2.97M), 2. Witco Industries Ltd. ($2.61M), 3. Upstate Construction Services Inc. ($2.29M), 4. MDM Construction Supply, LLC ($1.67M), 5. Onopa Services LLC ($1.4M), 6. Grunley Construction Co., Inc. ($1.37M), 7. OAC Action Construction Corp. ($978K), 8. Dmyles Inc. ($789K), 9. Hathazi Garage Doors LLC ($720K), 10. Omega Belt Built Construction Services JV, LLC ($701K).

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