Top 37 Contractors in PSC Z1BZ: Maintenance of Other Airfield Structures, FY2025
Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe
The top 10 won 76% of FY2025 PSC Z1BZ contract dollars
Ranking facts
- Contract obligations
- $10,884,650 Net of deobligations, by contracts coded PSC Z1BZ
- Contractors
- 39 Parent companies with an obligation
- Largest contractor
- Mckenzie Construction & Site Development LLC $2.97 million, 15.6% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 37 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $2,974,431 | |||
| 2 |
Witco Industries Ltd.
Top agencies
|
$2,613,187 | ||
| 3 | $2,286,684 | |||
| 4 | $1,669,500 | |||
| 5 |
Onopa Services LLC
Top agencies
|
$1,034,805 | ||
| 6 | $934,047 | |||
| 7 | $905,104 | |||
| 8 | $719,690 | |||
| 9 | $702,621 | |||
| 10 |
Kamikita Kensetsu Co.,Ltd.
Top agencies
|
$618,943 | ||
| 11 |
Norsheild Holdings LLC
Top agencies
|
$615,683 | ||
| 12 | $481,635 | |||
| 13 | $453,510 | |||
| 14 | $443,368 | |||
| 15 |
Surecan LLC
Top agencies
|
$437,950 | ||
| 16 | $352,640 | |||
| 17 |
Aa&A Maintenance, LLC
Top agencies
|
$274,843 | ||
| 18 | $260,738 | |||
| 19 |
ADB Safegate Americas LLC
Top agencies
|
$224,036 | ||
| 20 | $136,552 | |||
| 21 |
Consorzio Gemmo DI Bella
Top agencies
|
$116,313 | ||
| 22 |
Pyramid Contracting LLC
Top agencies
|
$87,000 | ||
| 23 |
Dmyles Inc.
Top agencies
|
$82,500 | ||
| 24 |
Geyer Fire Protection LLC
Top agencies
|
$73,910 | ||
| 25 |
Cinteot Inc.
Top agencies
|
$69,611 | ||
| 26 | $48,218 | |||
| 27 |
EDL Construction Inc.
Top agencies
|
$39,600 | ||
| 28 | $33,220 | |||
| 29 |
Battistella S.P.A.
Top agencies
|
$31,029 | ||
| 30 | $30,000 | |||
| 31 |
Nisou LGC JV II LLC
Top agencies
|
$24,923 | ||
| 32 |
Mitomo Marutaka JV
Top agencies
|
$17,651 | ||
| 33 | $17,100 | |||
| 34 | $13,650 | |||
| 35 |
Logos Automation LLC
Top agencies
|
$8,773 | ||
| 36 |
I E C S R L
Top agencies
|
$7,088 | ||
| 37 | $4,000 |
Show 12 more
37 of 39 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 $19.1 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 Z1BZ contractors in FY2025?
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 ($1.03M), 6. OAC Action Construction Corp. ($934K), 7. Grunley Construction Co., Inc. ($905K), 8. Hathazi Garage Doors LLC ($720K), 9. Omega Belt Built Construction Services JV, LLC ($703K), 10. Kamikita Kensetsu Co.,Ltd. ($619K).
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