Top 100 Contractors in PSC Z: Maintenance, Repair, Alteration Real Property, Jul 2025–Jun 2026
Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe
The top 10 won 18% of PSC Z contract dollars from July 2025 through June 2026
Ranking facts
- Contract obligations
- $25,097,952,389 Net of deobligations, by contracts coded PSC Z or a code under it
- Contractors
- 5,746 Parent companies with an obligation
- Largest contractor
- Barnard Construction Company, Incorporated $1.35 billion, 5.1% of obligations
- Data as of
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 | $1,349,847,155 | |||
| 2 | $783,256,403 | |||
| 3 | $515,627,192 | |||
| 4 | $381,143,265 | |||
| 5 | $345,040,000 | |||
| 6 | $323,446,855 | |||
| 7 | $307,478,711 | |||
| 8 |
J & J Maintenance Inc.
|
$272,066,952 | ||
| 9 |
Weston Solutions Holdings Inc
|
$239,702,068 | ||
| 10 |
NW Construction, Inc.
Top agencies
|
$215,670,745 | ||
| 11 | $211,938,254 | |||
| 12 | $197,969,868 | |||
| 13 | $171,173,707 | |||
| 14 | $152,267,529 | |||
| 15 | $135,750,000 | |||
| 16 |
Sea PAC Engineering Inc
|
$133,407,548 | ||
| 17 | $121,064,126 | |||
| 18 | $116,780,467 | |||
| 19 | $116,166,105 | |||
| 20 | $115,665,409 | |||
| 21 | $114,664,111 | |||
| 22 | $113,244,463 | |||
| 23 |
Sauer Construction LLC
Top agencies
|
$111,883,840 | ||
| 24 |
Fluor Corporation
Top agencies
|
$111,100,000 | ||
| 25 | $109,966,940 | |||
| 26 | $101,045,749 | |||
| 27 | $98,867,300 | |||
| 28 | $96,199,044 | |||
| 29 | $95,920,665 | |||
| 30 | $94,221,773 | |||
| 31 | $93,193,120 | |||
| 32 |
Donjon Marine Co., LLC
Top agencies
|
$90,250,060 | ||
| 33 | $90,033,806 | |||
| 34 | $88,360,215 | |||
| 35 |
Hcpa-Garco JV1
Top agencies
|
$85,650,000 | ||
| 36 |
V2X, Inc.
|
$84,851,660 | ||
| 37 | $83,516,472 | |||
| 38 | $82,913,903 | |||
| 39 | $80,198,483 | |||
| 40 | $78,269,407 | |||
| 41 |
Kiewit Infrastructure South Co
|
$76,058,947 | ||
| 42 |
Tutor Perini Corporation
|
$72,788,283 | ||
| 43 |
Multiquip Inc.
|
$72,525,082 | ||
| 44 |
Atkins Nuclear Secured Holdings Corporation
Top agencies
|
$68,378,923 | ||
| 45 |
Alberici Constructors Inc
Top agencies
|
$68,166,000 | ||
| 46 |
Emcor Group Inc.
|
$67,823,502 | ||
| 47 | $67,627,094 | |||
| 48 | $67,521,491 | |||
| 49 | $66,289,239 | |||
| 50 | $65,971,286 | |||
| 51 |
Terra Site Constructors LLC
|
$65,653,407 | ||
| 52 | $65,601,152 | |||
| 53 | $65,585,003 | |||
| 54 | $64,987,708 | |||
| 55 | $64,364,097 | |||
| 56 |
Semper TEK Inc
|
$62,422,460 | ||
| 57 | $60,969,728 | |||
| 58 | $60,675,261 | |||
| 59 | $58,881,010 | |||
| 60 |
Pegasus Support Services LLC
|
$57,850,794 | ||
| 61 | $57,638,520 | |||
| 62 |
Fox-Esa JV LLC
Top agencies
|
$56,758,349 | ||
| 63 | $55,228,515 | |||
| 64 | $53,797,336 | |||
| 65 | $53,605,479 | |||
| 66 |
Gilbane Japan GK
Top agencies
|
$53,097,552 | ||
| 67 | $52,913,491 | |||
| 68 |
Agate Construction Company Inc.
Top agencies
|
$52,544,664 | ||
| 69 | $52,488,595 | |||
| 70 | $50,214,266 | |||
| 71 | $49,983,121 | |||
| 72 | $49,826,573 | |||
| 73 | $49,768,436 | |||
| 74 | $48,961,067 | |||
| 75 | $48,757,216 | |||
| 76 | $48,628,424 | |||
| 77 |
Akima Facilities Operations LLC
Top agencies
|
$48,203,894 | ||
| 78 |
Overwatch Amoroso LLC
Top agencies
|
$47,538,000 | ||
| 79 | $47,038,497 | |||
| 80 | $47,016,504 | |||
| 81 | $46,842,097 | |||
| 82 |
Mike Hooks, LLC
Top agencies
|
$46,753,639 | ||
| 83 |
Valiant Integrated Services LLC
|
$46,393,389 | ||
| 84 | $45,912,492 | |||
| 85 |
Amerifield JV LLC
Top agencies
|
$45,738,096 | ||
| 86 | $44,581,562 | |||
| 87 | $44,187,830 | |||
| 88 | $44,127,111 | |||
| 89 |
Hurley JV, LLP
Top agencies
|
$43,795,485 | ||
| 90 | $43,375,140 | |||
| 91 | $43,273,037 | |||
| 92 | $42,746,369 | |||
| 93 | $42,103,616 | |||
| 94 | $41,748,496 | |||
| 95 |
Dawson Technical, Inc.
Top agencies
|
$41,600,000 | ||
| 96 |
CMS K.K.
Top agencies
|
$41,593,140 | ||
| 97 | $41,424,586 | |||
| 98 |
Tatitlek Corporation
Top agencies
|
$41,397,967 | ||
| 99 | $41,308,033 | |||
| 100 | $41,194,166 |
Show 75 more
100 of 5,746 contractors listed here. See the rest on GovTribe.
Rankings for the codes under PSC Z
| Code | Net obligations | Largest contractor |
|---|---|---|
| Z2 Maintenance, Alteration, Repair Nonbuildings | $16,960,745,435 | Barnard Construction Company, Incorporated |
| Z1 Maintenance, Alteration, Repair Buildings | $8,137,206,954 | Amentum Holdings, Inc. |
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 $26.5 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.
- 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 Z contractors in Jul 2025–Jun 2026?
1. Barnard Construction Company, Incorporated ($1.35B), 2. Amentum Holdings, Inc. ($783M), 3. Kiewit-Alberici Siop Macc AJV ($516M), 4. Peter Kiewit Sons', Inc. ($381M), 5. Fisher Sand & Gravel Co ($345M), 6. Nan Inc. ($323M), 7. BL Harbert International LLC ($307M), 8. J & J Maintenance Inc. ($272M), 9. Weston Solutions Holdings Inc ($240M), 10. NW Construction, Inc. ($216M).
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