Top 100 Contractors in PSC Z: Maintenance, Repair, Alteration Real Property, 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 Z: Maintenance, Repair, Alteration Real Property, FY2025.
The top 10 won 18% of PSC Z contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $25,037,374,972 Net of deobligations, by contracts coded PSC Z or a code under it
- Contractors
- 5,532 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 · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $1,350,263,517 | |||
| 2 | $759,972,275 | |||
| 3 | $517,591,408 | |||
| 4 | $381,378,835 | |||
| 5 | $365,306,601 | |||
| 6 | $345,040,000 | |||
| 7 | $270,505,599 | |||
| 8 | $257,534,078 | |||
| 9 | $251,775,254 | |||
| 10 |
J & J Maintenance Inc.
|
$246,547,785 | ||
| 11 |
Weston Solutions Holdings Inc
|
$223,565,035 | ||
| 12 | $169,539,071 | |||
| 13 | $162,082,496 | |||
| 14 | $159,929,085 | |||
| 15 |
Tutor Perini Corporation
|
$142,323,955 | ||
| 16 |
Clark Construction Group - California, LP
Top agencies
|
$135,750,000 | ||
| 17 | $134,798,325 | |||
| 18 | $130,237,297 | |||
| 19 | $127,277,586 | |||
| 20 | $124,977,224 | |||
| 21 |
NW Construction, Inc.
Top agencies
|
$123,789,530 | ||
| 22 | $116,765,467 | |||
| 23 | $116,267,451 | |||
| 24 |
Donjon Marine Co., LLC
Top agencies
|
$114,953,110 | ||
| 25 | $113,007,038 | |||
| 26 |
Sauer Construction LLC
Top agencies
|
$111,709,588 | ||
| 27 | $108,443,151 | |||
| 28 | $96,199,044 | |||
| 29 | $93,425,712 | |||
| 30 | $89,798,007 | |||
| 31 | $89,617,758 | |||
| 32 | $87,332,270 | |||
| 33 |
Fluor Corporation
Top agencies
|
$86,942,494 | ||
| 34 | $86,403,818 | |||
| 35 |
Kiewit Infrastructure South Co
|
$86,392,132 | ||
| 36 |
V2X, Inc.
|
$86,178,260 | ||
| 37 |
Hcpa-Garco JV1
Top agencies
|
$85,650,000 | ||
| 38 |
Sea PAC Engineering Inc
|
$84,667,630 | ||
| 39 | $80,212,569 | |||
| 40 |
The Dutra Group
Top agencies
|
$77,927,444 | ||
| 41 | $76,967,809 | |||
| 42 |
Greenberry Industrial LLC
|
$72,506,092 | ||
| 43 | $72,155,502 | |||
| 44 | $71,863,562 | |||
| 45 | $71,161,568 | |||
| 46 |
Pegasus Support Services LLC
|
$69,472,877 | ||
| 47 |
Emcor Group Inc.
|
$69,188,434 | ||
| 48 |
Alberici Constructors Inc.
Top agencies
|
$68,493,627 | ||
| 49 | $67,572,143 | |||
| 50 | $67,410,624 | |||
| 51 |
Terra Site Constructors LLC
|
$65,613,408 | ||
| 52 | $64,518,156 | |||
| 53 | $63,388,753 | |||
| 54 | $63,239,648 | |||
| 55 | $63,131,627 | |||
| 56 | $63,090,782 | |||
| 57 | $61,849,469 | |||
| 58 | $61,369,884 | |||
| 59 | $61,094,474 | |||
| 60 | $60,249,335 | |||
| 61 | $60,160,686 | |||
| 62 | $59,320,497 | |||
| 63 | $59,200,865 | |||
| 64 | $58,692,084 | |||
| 65 |
Atkins Nuclear Secured Holdings Corporation
Top agencies
|
$57,514,681 | ||
| 66 | $57,107,302 | |||
| 67 |
Fox-Esa JV LLC
Top agencies
|
$56,758,349 | ||
| 68 |
Siemens Corporation
|
$56,359,289 | ||
| 69 | $55,653,390 | |||
| 70 | $55,640,840 | |||
| 71 | $55,630,095 | |||
| 72 | $55,311,823 | |||
| 73 | $55,228,515 | |||
| 74 | $54,251,561 | |||
| 75 |
Agate Construction Company, Inc.
Top agencies
|
$53,000,000 | ||
| 76 |
Porr Government Services GMBH
|
$52,638,915 | ||
| 77 | $52,619,570 | |||
| 78 | $52,398,500 | |||
| 79 | $51,978,476 | |||
| 80 | $51,826,770 | |||
| 81 |
Semper TEK Inc
|
$51,420,324 | ||
| 82 |
Tatitlek Corporation
Top agencies
|
$50,837,192 | ||
| 83 | $50,819,884 | |||
| 84 | $50,562,936 | |||
| 85 | $50,263,868 | |||
| 86 | $49,462,138 | |||
| 87 | $48,961,067 | |||
| 88 | $48,757,216 | |||
| 89 | $48,754,917 | |||
| 90 |
Valiant Integrated Services LLC
|
$48,068,204 | ||
| 91 | $47,538,000 | |||
| 92 |
Mike Hooks, LLC
Top agencies
|
$47,399,150 | ||
| 93 | $47,064,002 | |||
| 94 | $46,815,255 | |||
| 95 | $46,616,754 | |||
| 96 |
WSP USA Solutions Inc
|
$46,417,899 | ||
| 97 | $46,301,769 | |||
| 98 |
Amerifield JV LLC
Top agencies
|
$45,738,096 | ||
| 99 |
The Haskell Company
Top agencies
|
$45,223,000 | ||
| 100 | $45,164,769 |
Show 75 more
100 of 5,532 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 | $16,674,465,672 | Barnard Construction Company, Incorporated |
| Z1 Maintenance, Alteration, Repair Buildings | $8,362,909,300 | 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 $26.3 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. 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 Z contractors in Aug 2025–Jul 2026?
1. Barnard Construction Company, Incorporated ($1.35B), 2. Amentum Holdings, Inc. ($760M), 3. Kiewit-Alberici Siop Macc AJV ($518M), 4. Peter Kiewit Sons', Inc. ($381M), 5. Bristol Bay Native Corporation ($365M), 6. Fisher Sand & Gravel Co ($345M), 7. BL Harbert International LLC ($271M), 8. Nan Inc. ($258M), 9. C.j. Mahan Construction Company, LLC ($252M), 10. J & J Maintenance Inc. ($247M).
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