NAICS Code 321991 — Manufactured Home (Mobile Home) Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 3 national industries under 32199 (All Other Wood Product Manufacturing).

Code	321991
Title	Manufactured Home (Mobile Home) Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,250 employees

Official definition (2022 NAICS)

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.

Is a business under 321991 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 321991 qualifies as a small business if it does not exceed 1,250 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 321991 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	321	Wood Product Manufacturing
Industry Group	3219	Other Wood Product Manufacturing
NAICS Industry	32199	All Other Wood Product Manufacturing
National Industry	321991	Manufactured Home (Mobile Home) Manufacturing

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
2451	Mobile Homes

Related National Industry codes

• 321992 — Prefabricated Wood Building Manufacturing
• 321999 — All Other Miscellaneous Wood Product Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.