NAICS 2022 nationalIndustry USA Verified: Census NAICS 2022 · 2026-01-01

NAICS 321114 — Wood Preservation

Wood Preservation

NAICS 321114 is the national industry code for wood preservation establishments in the United States. The Small Business Administration sets a size standard of 550 for this classification. It forms part of the hierarchical North American Industry Classification System maintained by the Census Bureau.

SBA: 550 View full SBA standard

Related industries in 32111 (Sawmills and Wood Preservation)

View parent 32111

321113

Sawmills

Official Inclusions

cutting to size and treating poles, pilings, posts and similar roundwood products
treatment of wood products with organic compounds such as creosote, and water-borne inorganic compounds, such as chromated copper arsenate

Official Illustrative Examples

Primary activities officially recognized by Census Bureau / Statistics Canada:

creosoting of wood lumber and plywood, treating with creosote or other preservatives piles and pilings, foundation and marine construction, treating pressure treated lumber, made from purchased lumber

Complete Index of Activities (15 recognized activities) ▼

bridge and trestle parts, wood, treating

creosoting of wood

cutting to size and treating poles, pilings, posts and similar roundwood products

lumber and plywood, treating with creosote or other preservatives

millwork, treating

mine props and ties, wood, treating

piles and pilings, foundation and marine construction, treating

poles, round wood, cutting and treating

preserving purchased wood and wood products

pressure treated lumber, made from purchased lumber

railroad ties (i.e., bridge, cross, switch), wood, treating

structural lumber and timber, treating

treating wood products with creosote or other preservatives

treatment of wood products with organic compounds such as creosote, and water-borne inorganic compounds, such as chromated copper arsenate

wood fence parts (i.e., pickets, poling, posts, rails), treating

Official data

Feature	Description
Official name	North American Industry Classification System (NAICS) 2022
Issuing authority	U.S. Census Bureau with OMB, Statistics Canada, and INEGI
Tax authority	Internal Revenue Service (IRS)
Purpose	Statistical business classification and federal contracting (SAM.gov, SBA standards)
Used in	SAM.gov registration, SBA size determinations, IRS tax classification, SEC EDGAR (via SIC crosswalk)
Active since	2022 (current edition)
Hierarchy level	Sector (2-digit)
Source	https://www.census.gov/naics/