Federal NAICS Codes

NAICS 238990: All Other Specialty Trade Contractors

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 238990.

NAICS 238990 federal market metrics

Total obligations
$22.7B
Total awards
70,251 awards
Active obligations
$3.9B
Size standard
$19,000,000 receipts

What this NAICS covers

NAICS 238990 covers specialized construction and trade activities not covered by a more specific category, including on-site installation, alteration, maintenance, and finishing work for building components, systems, and proprietary construction products.

Federal opportunities under 238990 typically involve procurement of a specific trade contractor to perform discrete onsite tasks such as specialized installations, retrofits, repairs, or finishing work, with schedule coordination, applicable testing, code compliance, and final acceptance documentation.

FY2025 snapshot

Obligations
$407.3M
Awards
1,436
Average award
$283.6K
Change from FY2024
-29.5%

Recent awards

Search contractors

$22,647

SAFEWARE INC

Office of the Assistant Secretary for Administration and Management

PIID
1605C426P00027
PSC
6665 - HAZARD-DETECTING INSTRUMENTS AND APPARATUS

$350,120

STORM WATER CONSTRUCTION, INC

Bureau of Reclamation

PIID
140R6026C0007
PSC
Z1PA - MAINTENANCE OF RECREATION FACILITIES (NON-BUILDING)

$6,975

YGV FREEDOM SOLUTIONS LLC

US Fish and Wildlife Service

PIID
140FC326P0014
PSC
Z2CZ - REPAIR OR ALTERATION OF OTHER EDUCATIONAL BUILDINGS

$0

TECH SITE SERVICES LLC

Drug Enforcement Administration

PIID
15DDHQ26P00000710
PSC
J045 - MAINT/REPAIR/REBUILD OF EQUIPMENT- PLUMBING, HEATING, AND WASTE DISPOSAL EQUIPMENT

$12,000

HAWAII METAL RECOVERY CORP.

National Oceanic and Atmospheric Administration

PIID
1333MF26P0072
PSC
P100 - SALVAGE- PREPARATION AND DISPOSAL OF EXCESS/SURPLUS PROPERTY

$43,686

CROSS NATION ENTERPRISES LLC

US Fish and Wildlife Service

PIID
140FC126P0036
PSC
Z2PZ - REPAIR OR ALTERATION OF OTHER NON-BUILDING FACILITIES

FAQ

What work fits NAICS 238990?
  • Installation of custom environmental enclosures, lab fume hoods, or cleanroom components requiring specialized mounting and sealing procedures.
  • Precision equipment rigging and anchoring for large scientific instruments including foundation modifications and vibration isolation work.
  • Selective interior demolition or specialty abatement tied to a unique trade scope outside general demolition contracts.
  • Retrofit of specialty building systems such as high-voltage grounding mats, radio frequency shielding, or testing chambers when classified outside standard electrical or mechanical trades.
When is NAICS 238990 a weak fit?
  • General building construction where the contractor manages multiple trade disciplines, overall site coordination, and subcontractor integration; this NAICS excludes full general contracting responsibility.
  • Electrical contracting jobs that involve full electrical system design, wiring, and code compliance projects; this NAICS excludes primary electrical system scope that falls under electrical-specific codes.
  • HVAC and plumbing installations requiring licensed mechanical contractors and integrated system commissioning; this NAICS excludes core mechanical system contracts governed by specific mechanical trade NAICS.
What solicitation language points to NAICS 238990?
  • Statement of work describes a narrow, standalone installation or modification with distinct trade deliverables and project-specific shop drawings rather than full design-build responsibilities.
  • Bid attachments require trade-specific qualifications, specialized tooling lists, or proof of experience performing the named niche installation as the prime.
  • Performance schedule is short-duration, single-discipline tasks with payment milestones tied to discrete installation milestones instead of broader construction phases.

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