2022 NAICS national industry in sector 31-33 Manufacturing
321991 Manufactured Home (Mobile Home) Manufacturing
NAICS 321991 is the US industry code for manufactured home (mobile home) manufacturing. This U.S.
- Code
- 321991 (2022 NAICS)
- Title
- Manufactured Home (Mobile Home) Manufacturing
- Part of
- All Other Wood Product Manufacturing
- SBA small business limit
- Up to 1,250 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 making manufactured homes (i.e., mobile homes) and nonresidential mobile buildings. Manufactured homes are designed to accept permanent water, sewer, and utility connections and although equipped with wheels, they are not intended for regular highway movement.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing prefabricated wood buildings not equipped with wheels are classified in U.S. Industry 321992, Prefabricated Wood Building Manufacturing.
- Manufacturing travel trailers with self-contained facilities for storage of water and waste are classified in U.S. Industry 336214, Travel Trailer and Camper 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 321991
The Census index assigns these 6 activities to this code. If your business matches one, this is your code.
- Buildings, mobile, commercial use, manufacturing
- Houses, prefabricated mobile homes, manufacturing
- Manufactured (mobile) buildings for commercial use (e.g., banks, offices) manufacturing
- Manufactured (mobile) classrooms manufacturing
- Manufactured (mobile) homes manufacturing
- Mobile homes manufacturing
SBA size standard for 321991
To count as a small business for SBA loans and federal contracts under NAICS 321991, your business (including affiliates) must not exceed 1,250 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.