Top 52 Contractors in PSC Z2DB: Repair or Alteration of Laboratories and Clinics, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC Z2DB: Repair or Alteration of Laboratories and Clinics, FY2025.
The top 10 won 79% of PSC Z2DB contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $29,161,530 Net of deobligations, by contracts coded PSC Z2DB
- Contractors
- 52 Parent companies with an obligation
- Largest contractor
- Amentum Holdings, Inc. $6.48 million, 20.6% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 52 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $6,476,191 | |||
| 2 |
Red Bison Services, LLC
Top agencies
|
$4,209,001 | ||
| 3 |
KLJ Services LLC
Top agencies
|
$3,495,385 | ||
| 4 | $2,915,888 | |||
| 5 |
Oneill Contractors Inc.
Top agencies
|
$1,750,220 | ||
| 6 |
RJS Construction, Inc.
Top agencies
|
$1,532,174 | ||
| 7 | $1,257,547 | |||
| 8 |
Phelan Construction LLC
Top agencies
|
$1,087,770 | ||
| 9 |
Yuil Eng. & Const. Co.,Ltd
Top agencies
|
$1,034,844 | ||
| 10 | $1,023,379 | |||
| 11 |
Spwc, LLC
Top agencies
|
$760,906 | ||
| 12 |
Radice Enterprises, LLC
Top agencies
|
$735,000 | ||
| 13 |
New Dominion Construction LLC
Top agencies
|
$598,000 | ||
| 14 |
LG Construction Inc.
Top agencies
|
$411,255 | ||
| 15 | $344,040 | |||
| 16 |
Heritage Construction LLC
Top agencies
|
$340,502 | ||
| 17 | $237,663 | |||
| 18 | $234,470 | |||
| 19 | $226,643 | |||
| 20 |
Ellis Builders Co
Top agencies
|
$199,989 | ||
| 21 | $196,690 | |||
| 22 |
Veren Industries LLC
Top agencies
|
$195,623 | ||
| 23 | $156,585 | |||
| 24 | $149,440 | |||
| 25 | $137,358 | |||
| 26 |
Black & Veatch Special Projects Corp.
Top agencies
|
$131,333 | ||
| 27 |
T & D Mechanical, Inc.
Top agencies
|
$130,381 | ||
| 28 | $121,458 | |||
| 29 | $110,005 | |||
| 30 |
Berkeley Building Company
Top agencies
|
$78,156 | ||
| 31 |
ACE Roof Coatings, Inc.
Top agencies
|
$69,975 | ||
| 32 |
Nihon Meccs Co.,Ltd.
Top agencies
|
$68,427 | ||
| 33 |
Kekolu Contracting, LLC
Top agencies
|
$64,225 | ||
| 34 | $64,100 | |||
| 35 | $58,350 | |||
| 36 | $50,810 | |||
| 37 |
Jag Underground LLC
Top agencies
|
$50,000 | ||
| 38 | $47,108 | |||
| 39 | $38,039 | |||
| 40 |
Wasker Enterprises Limited
Top agencies
|
$35,323 | ||
| 41 | $33,600 | |||
| 42 |
Parliament LLC
Top agencies
|
$31,978 | ||
| 43 |
Ameritech Contracting LLC
Top agencies
|
$31,599 | ||
| 44 |
J & G Solutions LLC
Top agencies
|
$31,000 | ||
| 45 | $29,282 | |||
| 46 |
Vision Contracting Inc.
Top agencies
|
$23,600 | ||
| 47 |
T E Davis Construction Co
Top agencies
|
$18,900 | ||
| 48 |
An41-Aak JV LLC
Top agencies
|
$17,592 | ||
| 49 | $7,622 | |||
| 50 | $7,436 | |||
| 51 |
Lindberg Services LLC
Top agencies
|
$5,800 | ||
| 52 | $4,966 |
Show all 52
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 $31.4 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.
- 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 Aug 2024–Jul 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 Z2DB contractors in Aug 2025–Jul 2026?
1. Amentum Holdings, Inc. ($6.48M), 2. Red Bison Services, LLC ($4.21M), 3. KLJ Services LLC ($3.5M), 4. Mckenzie Construction & Site Development LLC ($2.92M), 5. Oneill Contractors Inc. ($1.75M), 6. RJS Construction, Inc. ($1.53M), 7. Carrigg Commercial Builders LLC ($1.26M), 8. Phelan Construction LLC ($1.09M), 9. Yuil Eng. & Const. Co.,Ltd ($1.03M), 10. Marrero, Couvillon & Associates, L.L.C. ($1.02M).
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