What is the SBA size standard for NAICS 238910?

The SBA size standard for NAICS 238910 (Site Preparation Contractors) is $19 million in average annual receipts, per 13 C.F.R. § 121.201.

Which federal agencies buy under NAICS 238910?

For FY2024 reporting, the leading federal customers under NAICS 238910 were U.S. Army Corps of Engineers, Naval Facilities Engineering Systems Command, Department of Defense, Federal Emergency Management Agency, Department of the Interior. Live obligation data is available on USAspending.gov.

What FAR or DFARS clauses commonly apply to NAICS 238910 contracts?

Frequent clause flowdowns include FAR 52.222-6 (Construction Wage Rate Requirements); FAR 52.236-2 (Differing Site Conditions); FAR 52.236-13 (Accident Prevention); FAR 52.219-14 (Limitations on Subcontracting); FAR 52.236-15 (Schedules for Construction Contracts). Each contract instrument will incorporate clauses by reference under FAR 52.252-2; this list reflects the high-frequency set for this NAICS, not an exhaustive flowdown.

Specialty Trade Contractors

NAICS 238910 — Site Preparation Contractors

Excavation, grading, demolition, and site preparation. Federal use is broad: site work supporting MILCON, base operations, federal-lands projects, and disaster response.

Quick facts

SBA size standard: $19 million; Average annual receipts · 13 C.F.R. § 121.201
FY2024 federal obligations: $500M–$1B; See live USAspending.gov data →

Top federal customers

Federal agencies that obligate the most spending under NAICS 238910 (FY2024 reporting period). Order tracks federal-obligation volume on USAspending.gov.

1.U.S. Army Corps of Engineers
2.Naval Facilities Engineering Systems Command
3.Department of Defense
4.Federal Emergency Management Agency
5.Department of the Interior

Set-aside fit

Whether NAICS 238910 commonly carries set-aside designations on federal awards. Eligibility for any specific solicitation is set by the contracting officer; this table reflects the FY2024 award pattern, not a guarantee of set-aside status.

SDVOSB (Service-Disabled Veteran-Owned Small Business)
8(a) Business Development Program
HUBZone Small Business
WOSB / EDWOSB
VOSB (Veteran-Owned Small Business)

High SDVOSB / HUBZone activity, especially for FEMA disaster-response site work and military base site preparation.

Frequent prime contractors

Companies that most frequently appear as prime awardees under NAICS 238910 for FY2024. Drawn from USAspending.gov public award records — verify currency at the live link below.

Granite Construction
Sukut Construction
Ames Construction
APAC
Sevenson Environmental Services
Phillips and Jordan
D.H. Charles Engineering
Independence Excavating
Sundt Construction
Kiewit Corporation

See live award data on USAspending.gov →

Common FAR / DFARS clauses

Frequently flowed-down clauses on contracts in this NAICS. The clause text on acquisition.gov is authoritative; this list captures the practical pattern, not an exhaustive flowdown.

FAR 52.222-6Construction Wage Rate Requirements
Davis-Bacon heavy-construction wage determinations apply.
FAR 52.236-2Differing Site Conditions
Excavation work has direct subsurface risk exposure.
FAR 52.236-13Accident Prevention
Trenching and excavation safety flowdowns.
FAR 52.219-14Limitations on Subcontracting
Specialty trade 25% self-performance on set-aside awards.
FAR 52.236-15Schedules for Construction Contracts
Site prep is the leading critical-path activity.

Indirect rate considerations

Equipment-heavy operation. USACE EP 1110-1-8 ownership and operating rates dominate the cost structure. Trucking pass-through requires materials-handling treatment. Bonding direct.

See FieldLedger's Indirect Rate Engine for pool definition and rate tracking, or read the FieldLedger methodology for the underlying FAR Part 31 framework.

How FieldLedger fits NAICS 238910

Equipment costing under USACE EP 1110-1-8 is essential. Project P&L for job tracking. Multi-CLIN invoicing. Davis-Bacon via signed timekeeping.

DCAA compliance →Indirect Rate Engine →DCAA readiness check →

Frequently asked

What is the SBA size standard for NAICS 238910?: The SBA size standard for NAICS 238910 (Site Preparation Contractors) is $19 million in average annual receipts, per 13 C.F.R. § 121.201.
Is NAICS 238910 eligible for SDVOSB, 8(a), HUBZone, or WOSB set-asides?: Set-aside programs that commonly apply: SDVOSB, 8(a), HUBZone, WOSB, VOSB. High SDVOSB / HUBZone activity, especially for FEMA disaster-response site work and military base site preparation.
Which federal agencies buy under NAICS 238910?: For FY2024 reporting, the leading federal customers under NAICS 238910 were U.S. Army Corps of Engineers, Naval Facilities Engineering Systems Command, Department of Defense, Federal Emergency Management Agency, Department of the Interior. Live obligation data is available on USAspending.gov.
What FAR or DFARS clauses commonly apply to NAICS 238910 contracts?: Frequent clause flowdowns include FAR 52.222-6 (Construction Wage Rate Requirements); FAR 52.236-2 (Differing Site Conditions); FAR 52.236-13 (Accident Prevention); FAR 52.219-14 (Limitations on Subcontracting); FAR 52.236-15 (Schedules for Construction Contracts). Each contract instrument will incorporate clauses by reference under FAR 52.252-2; this list reflects the high-frequency set for this NAICS, not an exhaustive flowdown.
What indirect-rate structure works for a federal contractor in NAICS 238910?: Equipment-heavy operation. USACE EP 1110-1-8 ownership and operating rates dominate the cost structure. Trucking pass-through requires materials-handling treatment. Bonding direct.
How does FieldLedger help small federal contractors in NAICS 238910?: Equipment costing under USACE EP 1110-1-8 is essential. Project P&L for job tracking. Multi-CLIN invoicing. Davis-Bacon via signed timekeeping.

Sources

U.S. Census NAICS manual — census.gov/naics
SBA size-standards table — 13 C.F.R. § 121.201 (eCFR)
Federal obligations + prime awardees — USAspending.gov NAICS 238910
FAR / DFARS clause text — acquisition.gov

Snapshot date: 2026-05-08 (FY2024 reporting period). Federal-obligation bands and prime-contractor lists reflect the data as of the snapshot — refresh against USAspending.gov for current figures.