NAICS Code 238170 — Siding Contractors

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 23817 (Siding Contractors).

Code	238170
Title	Siding Contractors
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	$19 million in average annual receipts

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in installing siding of wood, aluminum, vinyl, or other exterior finish material (except brick, stone, stucco, or curtain wall). This industry also includes establishments installing gutters and downspouts. The work performed may include new work, additions, alterations, maintenance, and repairs.

Illustrative Examples:

Downspout, gutter, and gutter guard installation

Fascia and soffit installation

Siding (e.g., vinyl, wood, aluminum) installation

Is a business under 238170 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 238170 qualifies as a small business if it does not exceed $19 million in average annual receipts. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — receipts are averaged over the latest 5 fiscal years.

Where 238170 sits in the hierarchy

Level	Code	Title
Sector	23	Construction
Subsector	238	Specialty Trade Contractors
Industry Group	2381	Foundation, Structure, and Building Exterior Contractors
NAICS Industry	23817	Siding Contractors
National Industry	238170	Siding Contractors

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
1761	Roofing, Siding, and Sheet Metal Work

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.