NAICS 42334-digit industry group · NAICS 2022

NAICS Code 4233: Lumber and Construction Materials Wholesalers

The NAICS code for Lumber and Construction Materials Wholesalers is 4233.

Lumber and Construction Materials Wholesalers distribute lumber, millwork, drywall, roofing, insulation, and masonry products to building contractors, home improvement retailers, and lumber yards. Demand tracks residential and commercial construction starts closely, and commodity lumber price volatility creates significant working capital risk.

Lumber and Construction Materials Wholesalers falls under the NAICS code for NAICS 423 — Merchant Wholesalers, Durable Goods, a subsector of Wholesale Trade.

37,885

Total US Entities

NAICS Industries

4233

NAICS Code

Classification

NAICS Industries (5-digit)

NAICS Code	Industry Title	US Entities
42331	NAICS 42331 — Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers	18,000
42332	NAICS 42332 — Brick, Stone, and Related Construction Material Merchant Wholesalers	5,000
42333	NAICS 42333 — Roofing, Siding, and Insulation Material Merchant Wholesalers	8,000
42339	NAICS 42339 — Other Construction Material Merchant Wholesalers	6,885

NAICS 2022

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Other Industry Groups in Merchant Wholesalers, Durable Goods

NAICS 4231 — Motor Vehicle and Parts Merchant Wholesalers34,985 entities

NAICS 4232 — Furniture and Home Furnishing Wholesalers21,008 entities

NAICS 4234 — Professional and Commercial Equipment Wholesalers63,510 entities

NAICS 4235 — Metal and Mineral Merchant Wholesalers14,003 entities

NAICS 4236 — Household Appliances and Electronics Wholesalers40,384 entities

NAICS 4237 — Hardware and Plumbing Equipment Wholesalers24,448 entities

NAICS 4238 — Machinery, Equipment, and Supplies Wholesalers108,927 entities

NAICS 4239 — Miscellaneous Durable Goods Wholesalers78,358 entities

Working with legacy records? convert a NAICS code to SIC using the mapping table — NAICS 2022 at the five-digit industry level paired with SIC 1987 four-digit industries, with coverage gaps stated.