Top Interior commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance contractors
In the 12 months ending Oct 5, 2026, the Department of the Interior obligated $17.2M in net prime contract dollars under NAICS 811310, up 2.9% from $16.7M in the preceding 12 months. 189 prime contractors received positive obligations, and 25 of them accounted for 80% of that spend.
Prime contracts funded by the Department of the Interior. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top Interior contractors for NAICS 811310
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Pacific Overhead Crane Services Inc. | $4.2M | $78K | 23.3% | ▲ 27 |
| 2 | Native American Transformer Services Inc | $3.2M | $2.2M | 17.9% | — |
| 3 | Louis Allis LLC | $1.1M | $0 | 6.2% | New |
| 4 | Wagner Equipment Co | $1.0M | $246K | 5.7% | ▲ 5 |
| 5 | Exim Engineering, Inc. | $574K | $0 | 3.2% | New |
| 6 | Sidewinders LLC | $381K | $7.5M | 2.1% | ▼ 5 |
| 7 | KP Ventures Well Drilling & Pump Co LLC | $349K | $56K | 1.9% | ▲ 27 |
| 8 | Lillard & Clark Construction Co Inc | $345K | $0 | 1.9% | New |
| 9 | J. W. Kerns, Inc | $326K | $0 | 1.8% | New |
| 10 | Tech O. R., LLC | $321K | $255K | 1.8% | ▼ 2 |
| 11 | Justus Corporation | $296K | $0 | 1.7% | New |
| 12 | Clean Energy | $269K | $68K | 1.5% | ▲ 17 |
| 13 | Vertical Options LLC | $243K | $79K | 1.4% | ▲ 14 |
| 14 | Hydro Solutions Pump and Well Service, LLC | $221K | $8K | 1.2% | ▲ 110 |
| 15 | Sawtooth Industrial LLC | $213K | $0 | 1.2% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Pacific Overhead Crane Services Inc.$78K → $4.2M (+$4.1M) · now #1
- Louis Allis LLC$0 → $1.1M (+$1.1M) · now #3
- Native American Transformer Services Inc$2.2M → $3.2M (+$983K) · now #2
Largest declines
- Sidewinders LLC$7.5M → $381K (−$7.1M) · now #6
- Silver State Wire Rope and Rigging, LLC$506K → $0 (−$506K) · no latest-period obligations
- QA Engineering LLC$276K → −$162K (−$437K) · no latest-period obligations
New to this market
80 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Louis Allis LLC | Sep 23, 2026 | $1.1M |
| Exim Engineering, Inc. | Sep 11, 2026 | $574K |
| Lillard & Clark Construction Co Inc | Sep 9, 2026 | $345K |
| J. W. Kerns, Inc | May 8, 2026 | $326K |
| Justus Corporation | Sep 26, 2026 | $296K |
| Sawtooth Industrial LLC | May 6, 2026 | $213K |
| The W.W. Williams Company, LLC | Mar 24, 2026 | $161K |
| Cullum and Brown of Kansas City Inc. | Jun 11, 2026 | $147K |
Where the money comes from
Funding sub-agencies within the Department of the Interior, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Bureau of Reclamation | $7.8M | $9.5M | Down $1.7M (17.7%) |
| Bureau of Indian Affairs and Bureau of Indian Education | $5.0M | $3.4M | Up $1.6M (45.6%) |
| U.S. Fish and Wildlife Service | $1.9M | $1.4M | Up $458K (32.0%) |
| National Park Service | $1.9M | $1.8M | Up $30K (1.7%) |
| U.S. Geological Survey | $323K | $276K | Up $47K (17.0%) |
| Departmental Offices | $170K | −$3K | Up $173K (5119.5%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 140P1522C0007 | Clean Energy LNG FUEL STATION MAINTENANCE- GRAND CANYON NATIONAL PARK (GRCA) | $1.1M | Mar 31, 2027 |
| 140A1126F0009 | Native American Transformer Services Inc CONTRACTED LINE CREWS FOR COLORADO RIVER AGENCY - ELECTRIC SERVICES | $2.4M | Apr 9, 2027 |
| 140R3026F0111 | Louis Allis LLC EO 14398 HOOVER DAM EXCITER ARMATURE REPAIR & REWIND TASK ORDER #1 | $1.1M | Jun 1, 2027 |
| 140R4026C0005 | Pacific Overhead Crane Services Inc. THE PURPOSE REPAIR OF BRIDGE CRANE AT GC POWER PLANT | $4.1M | Oct 22, 2027 |
Common questions
Who are the top Interior contractors for NAICS 811310?
In the latest 12 months, Pacific Overhead Crane Services Inc. ($4.2M), Native American Transformer Services Inc ($3.2M), Louis Allis LLC ($1.1M) received the most Interior obligations for commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance.
How concentrated is this market?
The eight largest primes held 62.3% of positive obligations, and Pacific Overhead Crane Services Inc. alone held 23.3%. 80 contractors won their first obligations in this market during the latest 12 months.
Are any large Interior NAICS 811310 contracts ending soon?
4 of the largest awards in this market reach their current end date in the next 18 months. The first is 140P1522C0007 (Clean Energy, $1.1M obligated), ending Mar 31, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 811310 across all agencies
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$68.6MDHS · NAICS 811310
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$13.0MCommerce · NAICS 811310
$7.9MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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