2022 NAICS national industry in sector 31-33 Manufacturing
321992 Prefabricated Wood Building Manufacturing
NAICS 321992 is the US industry code for prefabricated wood building manufacturing. This U.S.
- Code
- 321992 (2022 NAICS)
- Title
- Prefabricated Wood Building Manufacturing
- Part of
- All Other Wood Product Manufacturing
- SBA small business limit
- Up to 500 employees
- Closest UK SIC
- 16220 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing prefabricated wood buildings and wood sections and panels for prefabricated wood buildings.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Fabricating wood buildings or wood sections and panels for buildings at the construction site are classified in Sector 23, Construction.
- Making manufactured homes (i.e., mobile homes) are classified in U.S. Industry 321991, Manufactured Home (Mobile Home) Manufacturing.
- Setting up manufactured homes (i.e., mobile homes) at the construction site are classified in Industry 238990, All Other Specialty Trade Contractors.
Activities listed under 321992
The Census index assigns these 14 activities to this code. If your business matches one, this is your code.
- Buildings, prefabricated, wood, manufacturing
- Chicken coops, prefabricated, wood, manufacturing
- Corn cribs, prefabricated, wood, manufacturing
- Farm buildings, prefabricated wood, manufacturing
- Garages, prefabricated wood, manufacturing
- Geodesic domes, prefabricated, wood, manufacturing
- Houses, prefabricated, wood (except mobile homes), manufacturing
- Log cabins, prefabricated wood, manufacturing
- Panels, prefabricated wood building, manufacturing
- Prefabricated homes (except mobile homes), wood, manufacturing
- Prefabricated wood buildings manufacturing
- Sauna rooms, prefabricated, wood, manufacturing
- Sections, prefabricated wood building, manufacturing
- Sheds (e.g., garden, storage, utility), prefabricated wood, manufacturing
SBA size standard for 321992
To count as a small business for SBA loans and federal contracts under NAICS 321992, your business (including affiliates) must not exceed 500 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 1622), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.