Top 100 Contractors in NAICS 2371: Utility System Construction, FY2025
Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe
The top 10 won 43% of FY2025 NAICS 2371 contract dollars
Ranking facts
- Contract obligations
- $2,623,441,488 Net of deobligations, by contracts coded NAICS 2371 or a code under it
- Contractors
- 898 Parent companies with an obligation
- Largest contractor
- Core Tech-Hdcc-Kajima LLC $219 million, 8.1% 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 |
Core Tech-Hdcc-Kajima LLC
Top agencies
|
$219,000,000 | ||
| 2 | $158,738,176 | |||
| 3 |
Amber Infrastructure LLC
|
$158,354,432 | ||
| 4 |
OCI Overseas Holding Limited
|
$150,900,668 | ||
| 5 |
Jacobs Government Services Company
Top agencies
|
$132,562,208 | ||
| 6 | $102,014,171 | |||
| 7 |
CDM Constructors Inc.
Top agencies
|
$88,273,589 | ||
| 8 | $70,024,119 | |||
| 9 |
Absher Construction Co
Top agencies
|
$47,302,112 | ||
| 10 | $46,061,003 | |||
| 11 | $45,535,140 | |||
| 12 |
Tutor Perini Corporation
Top agencies
|
$41,867,640 | ||
| 13 | $41,854,199 | |||
| 14 | $41,258,681 | |||
| 15 |
Guidehouse Inc.
|
$35,797,154 | ||
| 16 |
Berger Cummins J V
Top agencies
|
$28,750,064 | ||
| 17 | $27,172,480 | |||
| 18 |
R.C.S. Construction Inc.
Top agencies
|
$26,642,000 | ||
| 19 | $25,339,800 | |||
| 20 |
Scalfo Electric Inc.
Top agencies
|
$24,218,000 | ||
| 21 | $22,045,791 | |||
| 22 | $21,808,778 | |||
| 23 | $21,434,192 | |||
| 24 |
Kyunan Co., Ltd.
Top agencies
|
$21,195,630 | ||
| 25 |
PCL Construction Inc
|
$17,610,323 | ||
| 26 | $17,342,308 | |||
| 27 |
Reyes Construction, Inc.
Top agencies
|
$16,913,744 | ||
| 28 | $16,478,489 | |||
| 29 | $16,070,736 | |||
| 30 |
RE/Spec Inc.
Top agencies
|
$15,971,580 | ||
| 31 |
MGC Contractors Inc.
Top agencies
|
$15,645,824 | ||
| 32 | $15,258,062 | |||
| 33 | $14,748,416 | |||
| 34 |
Mcmillen, Inc.
Top agencies
|
$13,873,100 | ||
| 35 | $13,796,471 | |||
| 36 | $13,711,954 | |||
| 37 | $13,701,548 | |||
| 38 | $13,500,000 | |||
| 39 | $13,394,847 | |||
| 40 | $12,985,591 | |||
| 41 | $12,984,348 | |||
| 42 |
S & B Infrastructure Ltd
Top agencies
|
$12,605,777 | ||
| 43 | $12,557,810 | |||
| 44 |
Weeminuche Construction Authority
Top agencies
|
$11,969,490 | ||
| 45 | $11,740,000 | |||
| 46 |
Sea PAC Engineering Inc
|
$11,640,970 | ||
| 47 | $11,346,979 | |||
| 48 | $11,183,624 | |||
| 49 | $10,647,733 | |||
| 50 | $10,358,428 | |||
| 51 | $10,043,289 | |||
| 52 | $9,999,999 | |||
| 53 | $9,906,721 | |||
| 54 | $9,881,627 | |||
| 55 | $9,741,900 | |||
| 56 | $9,268,063 | |||
| 57 | $9,198,769 | |||
| 58 |
Lead Builders Inc.
Top agencies
|
$9,103,175 | ||
| 59 | $9,084,241 | |||
| 60 | $8,824,784 | |||
| 61 |
Tybe-Garney Federal JV LLC
Top agencies
|
$8,769,064 | ||
| 62 | $8,494,705 | |||
| 63 |
Aici-Archirodon JV LLC
Top agencies
|
$8,488,000 | ||
| 64 |
Hartman-Walsh Corp
Top agencies
|
$8,463,989 | ||
| 65 |
Structural Associates Inc.
Top agencies
|
$8,332,684 | ||
| 66 |
S & K Design Build LLC
Top agencies
|
$7,844,620 | ||
| 67 | $7,674,040 | |||
| 68 | $7,638,815 | |||
| 69 | $7,514,397 | |||
| 70 | $7,504,058 | |||
| 71 |
IHP Industrial Inc.
Top agencies
|
$7,431,698 | ||
| 72 |
Sygnos Inc.
Top agencies
|
$7,287,371 | ||
| 73 |
Sunflow Energy Corp
Top agencies
|
$7,286,813 | ||
| 74 | $7,131,138 | |||
| 75 | $7,030,825 | |||
| 76 | $6,792,893 | |||
| 77 | $6,159,755 | |||
| 78 | $6,055,276 | |||
| 79 | $6,048,495 | |||
| 80 |
Ames 1 LLC
|
$5,978,192 | ||
| 81 |
B2 Constructors, LLC
Top agencies
|
$5,957,368 | ||
| 82 | $5,898,100 | |||
| 83 | $5,881,054 | |||
| 84 |
Power Pro Plus Inc.
Top agencies
|
$5,357,643 | ||
| 85 |
Frawner Corporation
Top agencies
|
$5,120,647 | ||
| 86 | $4,974,884 | |||
| 87 |
CI Pond Solutions JV LLC
Top agencies
|
$4,929,405 | ||
| 88 |
DE LA HOZ Builders Inc
Top agencies
|
$4,906,558 | ||
| 89 | $4,840,047 | |||
| 90 |
ANCHOR-41 Construction LLC
Top agencies
|
$4,667,521 | ||
| 91 |
A & H-Ambica JV LLC
Top agencies
|
$4,580,000 | ||
| 92 | $4,477,237 | |||
| 93 | $4,465,303 | |||
| 94 |
Bering-Weston JV, LLC
Top agencies
|
$4,440,816 | ||
| 95 |
RG Tenney Electric Inc
Top agencies
|
$4,338,900 | ||
| 96 | $4,260,468 | |||
| 97 |
RJS Construction, Inc.
Top agencies
|
$4,147,923 | ||
| 98 |
Gsi-Enet JV LLC
Top agencies
|
$4,115,475 | ||
| 99 | $4,067,002 | |||
| 100 | $4,030,308 |
Show 75 more
100 of 898 contractors listed here. See the rest on GovTribe.
Rankings for the codes under NAICS 2371
| Code | Net obligations | Largest contractor |
|---|---|---|
| 23713 Power and Communication Line and Related Structures Construction | $1,054,760,353 | Core Tech-Hdcc-Kajima LLC |
| 23711 Water and Sewer Line and Related Structures Construction | $970,743,993 | Jacobs Government Services Company |
| 23712 Oil and Gas Pipeline and Related Structures Construction | $597,937,142 | Weston Solutions 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 $2.71 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.
- 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 NAICS 2371 contractors in FY2025?
1. Core Tech-Hdcc-Kajima LLC ($219M), 2. BL Harbert International LLC ($159M), 3. Amber Infrastructure LLC ($158M), 4. OCI Overseas Holding Limited ($151M), 5. Jacobs Government Services Company ($133M), 6. Weston Solutions Holdings Inc ($102M), 7. CDM Constructors Inc. ($88.3M), 8. Reliable Contracting Group, LLC ($70M), 9. Absher Construction Co ($47.3M), 10. WSP USA Environment & Infrastructure Inc. ($46.1M).
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