Top 100 Contractors in NAICS 2371: Utility System Construction, 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 NAICS 2371: Utility System Construction, FY2025.
The top 10 won 42% of NAICS 2371 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $3,167,744,813 Net of deobligations, by contracts coded NAICS 2371 or a code under it
- Contractors
- 811 Parent companies with an obligation
- Largest contractor
- Core Tech-Hdcc-Kajima LLC $219 million, 6.7% 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 |
Core Tech-Hdcc-Kajima LLC
Top agencies
|
$219,000,000 | ||
| 2 |
OCI Overseas Holding Limited
|
$183,605,833 | ||
| 3 | $156,416,978 | |||
| 4 |
City Light & Power FTC LLC
|
$136,122,920 | ||
| 5 |
Ames Construction, Inc.
Top agencies
|
$129,487,964 | ||
| 6 | $129,330,094 | |||
| 7 |
Tutor Perini Corporation
|
$117,829,512 | ||
| 8 | $109,487,800 | |||
| 9 |
Weston Solutions Holdings Inc
|
$94,186,226 | ||
| 10 |
Kiewit Infrastructure South Co
Top agencies
|
$90,299,000 | ||
| 11 | $80,957,096 | |||
| 12 |
Greenberry Industrial LLC
Top agencies
|
$68,735,480 | ||
| 13 | $59,519,862 | |||
| 14 |
David Boland Inc.
Top agencies
|
$54,333,598 | ||
| 15 | $51,259,430 | |||
| 16 |
Absher Construction Co
Top agencies
|
$47,418,612 | ||
| 17 | $45,188,724 | |||
| 18 | $44,193,678 | |||
| 19 | $43,631,784 | |||
| 20 |
WSP USA Environment & Infrastructure Inc.
|
$40,353,942 | ||
| 21 | $36,065,280 | |||
| 22 | $33,609,433 | |||
| 23 |
Guidehouse Inc.
Top agencies
|
$32,179,502 | ||
| 24 | $29,952,309 | |||
| 25 | $26,522,455 | |||
| 26 |
Scalfo Electric Inc.
Top agencies
|
$25,765,854 | ||
| 27 | $25,339,800 | |||
| 28 |
Red Eagle 3 JV
Top agencies
|
$22,859,800 | ||
| 29 | $22,785,624 | |||
| 30 |
Kyunan Co., Ltd.
Top agencies
|
$21,195,630 | ||
| 31 |
The Chenega Corporation
Top agencies
|
$21,076,970 | ||
| 32 | $20,290,716 | |||
| 33 |
Bairco Construction Inc.
Top agencies
|
$18,691,193 | ||
| 34 | $17,108,085 | |||
| 35 | $16,664,200 | |||
| 36 |
Dominion Energy, Inc.
Top agencies
|
$16,353,817 | ||
| 37 | $16,306,048 | |||
| 38 |
Michels Corp
Top agencies
|
$16,131,236 | ||
| 39 | $15,925,307 | |||
| 40 | $15,258,062 | |||
| 41 | $13,704,162 | |||
| 42 | $13,687,063 | |||
| 43 |
CMS Corporation
Top agencies
|
$13,497,000 | ||
| 44 | $12,703,843 | |||
| 45 |
Bethel Downstream JV
Top agencies
|
$12,432,644 | ||
| 46 |
Berger Cummins J V
Top agencies
|
$12,420,782 | ||
| 47 | $12,121,532 | |||
| 48 | $11,740,000 | |||
| 49 |
Sea PAC Engineering Inc
|
$11,640,970 | ||
| 50 |
Wendler, Inc.
Top agencies
|
$11,575,000 | ||
| 51 | $11,346,979 | |||
| 52 | $11,004,490 | |||
| 53 | $10,998,670 | |||
| 54 |
Orcom a Division of Ortega Companies Inc
Top agencies
|
$10,795,190 | ||
| 55 |
South Bay EDC Inc.
Top agencies
|
$10,711,788 | ||
| 56 | $10,544,233 | |||
| 57 |
Briston Construction LLC
Top agencies
|
$10,090,128 | ||
| 58 | $9,999,999 | |||
| 59 | $9,827,287 | |||
| 60 | $8,926,889 | |||
| 61 | $8,751,331 | |||
| 62 | $8,619,526 | |||
| 63 |
Porr Government Services Benelux
Top agencies
|
$8,449,668 | ||
| 64 |
Loduca Associates, Inc.
Top agencies
|
$8,367,796 | ||
| 65 | $8,191,295 | |||
| 66 |
RG Tenney Electric Inc
Top agencies
|
$8,175,328 | ||
| 67 |
Lead Builders Inc.
Top agencies
|
$8,006,093 | ||
| 68 | $7,904,194 | |||
| 69 |
S & K Design Build LLC
Top agencies
|
$7,844,620 | ||
| 70 | $7,674,040 | |||
| 71 |
Heritage Homes LLC
Top agencies
|
$7,617,216 | ||
| 72 |
Jacobs Engineering Group Inc.
Top agencies
|
$7,554,611 | ||
| 73 | $7,469,201 | |||
| 74 | $7,449,745 | |||
| 75 | $7,301,735 | |||
| 76 |
Sunflow Energy Corp
Top agencies
|
$7,286,813 | ||
| 77 | $7,215,412 | |||
| 78 | $6,787,338 | |||
| 79 | $6,761,877 | |||
| 80 | $6,644,630 | |||
| 81 |
Mcneal Professional Services Inc.
Top agencies
|
$6,272,093 | ||
| 82 |
PCL Construction Inc
|
$6,250,000 | ||
| 83 |
Structural Associates Inc.
Top agencies
|
$6,213,708 | ||
| 84 |
Vixen LLC
Top agencies
|
$5,996,721 | ||
| 85 | $5,880,340 | |||
| 86 |
Ames 1 LLC
Top agencies
|
$5,855,604 | ||
| 87 |
B2 Constructors, LLC
Top agencies
|
$5,807,894 | ||
| 88 | $5,362,345 | |||
| 89 |
Agco-Ps JV
Top agencies
|
$5,222,331 | ||
| 90 |
ANCHOR-41 Construction LLC
Top agencies
|
$5,157,586 | ||
| 91 |
Wright Bros LLC
Top agencies
|
$5,015,701 | ||
| 92 |
DFW Cad Services LLC
Top agencies
|
$5,004,608 | ||
| 93 |
East Coast Powerline LLC
Top agencies
|
$5,000,000 | ||
| 94 | $4,965,074 | |||
| 95 |
DE LA HOZ Builders Inc.
Top agencies
|
$4,906,558 | ||
| 96 | $4,840,047 | |||
| 97 |
Cdeem Co
Top agencies
|
$4,776,000 | ||
| 98 |
Pond & Company
Top agencies
|
$4,652,578 | ||
| 99 |
A & H-Ambica JV LLC
Top agencies
|
$4,580,000 | ||
| 100 |
Ecolectrics, LLC
Top agencies
|
$4,524,989 |
Show 75 more
100 of 811 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 | $1,450,980,859 | Core Tech-Hdcc-Kajima LLC |
| 23711 Water and Sewer Line and Related Structures Construction | $1,140,455,425 | Ames Construction, Inc. |
| 23712 Oil and Gas Pipeline and Related Structures Construction | $576,308,530 | 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 $3.27 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 NAICS 2371 contractors in Aug 2025–Jul 2026?
1. Core Tech-Hdcc-Kajima LLC ($219M), 2. OCI Overseas Holding Limited ($184M), 3. Bristol Bay Native Corporation ($156M), 4. City Light & Power FTC LLC ($136M), 5. Ames Construction, Inc. ($129M), 6. Record Steel and Construction, Inc. ($129M), 7. Tutor Perini Corporation ($118M), 8. G.s.e. Construction Company, Inc. ($109M), 9. Weston Solutions Holdings Inc ($94.2M), 10. Kiewit Infrastructure South Co ($90.3M).
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