Class Code 238110

Poured Concrete Foundation & Structure Contractors

The official NAICS industry for concrete contractors — foundations, footings, and poured structures, including flatwork crews. What you put on the W-9-adjacent paperwork, loan apps, and many insurance applications.

Trades that use this code

Related codes

Classification varies by state and carrier — several states use independent bureaus, and carriers file their own GL codes. Confirm your fit with a licensed agent before relying on any code. 🤝

Written by the We Insure Things team — licensed independent insurance agents. Last reviewed July 13, 2026. General references: NCCI · NAICS (Census) · your state insurance department. Codes summarized in plain English; official classification language controls.