# NAICS 237: Heavy and Civil Engineering Construction

No SBA size standard is recorded for NAICS 237.

| Field | Value |
| --- | --- |
| Code | 237 |
| Title | Heavy and Civil Engineering Construction |
| Level | 3 |
| Parent | 23 |
| Size standard | - |
| Footnote | - |

## Description

The Heavy and Civil Engineering Construction subsector comprises establishments whose primary activity is the construction of entire engineering projects (e.g., highways and dams), and specialty trade contractors, whose primary activity is the production of a specific component for such projects. Specialty trade contractors in the Heavy and Civil Engineering Construction subsector generally are performing activities that are specific to heavy and civil engineering construction projects and are not normally performed on buildings. The work performed may include new work, additions, alterations,

## Sources

- Census NAICS: https://www.census.gov/naics/
- SBA size standards: https://www.sba.gov/document/support-table-size-standards

## API and MCP

- REST: GET https://samgovapi.io/api/v1/naics/237/size-standard?revenue_usd=...
- MCP tools: naics_lookup, size_standard_check

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