NAICS 423390 Quarterly Industry Report
Other Construction Material Merchant Wholesalers
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 423390Sector: Wholesale Trade (42)Updated: Q1 2026
About This Report
This Fair Market Value industry report for NAICS 423390 integrates data from the U.S. Census Bureau[5] economic surveys, Bureau of Labor Statistics[6] employment data, and SBA size standard publications[7]. Our research team tracks specialty construction material demand, prefabricated building trends, and glass distribution volumes to provide valuation context for this diverse wholesale segment. Updated quarterly, each data point is traced to its originating government or institutional source.
Industry Snapshot
Key metrics for the other construction material merchant wholesalers industry.
Industry Definition & Overview
Other Construction Material Merchant Wholesalers (NAICS 423390) encompasses establishments primarily engaged in the merchant wholesale distribution of construction materials not covered by lumber (423310), brick and stone (423320), or roofing and siding (423330). Key product categories include flat glass, prefabricated buildings, manufactured homes (mobile homes), ornamental ironwork, wire fencing and accessories, and other specialty construction products. These distributors purchase from manufacturers and resell to contractors, building material dealers, and construction project owners.
The industry covers a wide range of niche building products. Flat glass wholesalers supply glazing contractors and window fabricators. Manufactured home distributors operate as a wholesale link between factory builders and retail dealer lots. Fencing distributors supply residential and commercial fence installation contractors. According to the U.S. Census Bureau[5], this catchall classification captures construction material distribution operations that do not fit neatly into the more specific sibling codes within Industry Group 4233.
Prefabricated building and manufactured home distribution represents a distinct segment within this code, involving specialized transport logistics and dealer network management. Glass wholesale distribution requires careful handling, custom cutting capabilities, and delivery equipment designed for fragile sheet products. The diversity of products in this classification means that individual firms typically specialize in one or two product categories rather than carrying the full range of items covered by the code.
What's Included in This Industry
- Flat glass merchant wholesale distribution
- Manufactured home (mobile home) wholesale operations
- Prefabricated building wholesale distribution
- Wire fencing and accessories wholesale operations
- Ornamental ironwork wholesale distribution
- Glass block wholesale operations
- Chain link fence wholesale distribution
- Modular building component wholesaling
- Specialty construction hardware wholesale distribution
- Shower door and tub enclosure wholesale operations
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Sector | Wholesale Trade | 42 |
| Subsector | Merchant Wholesalers, Durable Goods | 423 |
| Industry Group | Lumber and Other Construction Materials Merchant Wholesalers | 4233 |
| NAICS Industry | Other Construction Material Merchant Wholesalers | 42339 |
| National Industry | Other Construction Material Merchant Wholesalers | 423390 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 423310 | Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers | Lumber, plywood, and millwork merchant wholesalers distribute wood-based building materials specifically excluded from this other construction materials classification |
| 423320 | Brick, Stone, and Related Construction Material Merchant Wholesalers | Brick, stone, and construction material merchant wholesalers distribute masonry products specifically excluded from this catchall construction materials code |
| 423330 | Roofing, Siding, and Insulation Material Merchant Wholesalers | Roofing, siding, and insulation material merchant wholesalers distribute building envelope products specifically excluded from this classification |
| 332323 | Ornamental and Architectural Metal Work Manufacturing | Ornamental and architectural metal work manufacturing produces decorative ironwork and metal fencing products distributed through this wholesale channel |
| 332439 | Other Metal Container Manufacturing | Other metal container manufacturing produces specialty metal construction products that may flow through construction material wholesale distribution networks |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 10.9% | 406 |
| 2 | Texas | 10.2% | 381 |
| 3 | Florida | 9.6% | 359 |
| 4 | New York | 4.8% | 179 |
| 5 | Pennsylvania | 4.3% | 162 |
| 6 | Georgia | 3.4% | 125 |
| 7 | North Carolina | 3.3% | 123 |
| 8 | Washington | 3.2% | 119 |
| 9 | Illinois | 3.1% | 117 |
| 10 | Ohio | 3.0% | 111 |
% Of Establishments
0%
11%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
496
Total SBA Loans
$284.8M
Total Loan Volume
$574K
Average Loan Size
11 yrs
Average Loan Term
10.29%
Average Interest Rate
2,544
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The SBA[7] classifies Other Construction Material Merchant Wholesalers under NAICS 423390 with a size standard of 200 employees. Most specialty construction material distributors operate with moderate-sized workforces. Qualifying firms can access SBA lending programs[8] for warehouse expansion, specialized delivery equipment, inventory financing, and working capital to support seasonal construction demand cycles. Eligible businesses can access SBA 7(a) loans[9] for working capital, equipment, and acquisition financing, while 504 loans[10] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Live Oak Banking Company | 16 | $40.0M | $2.5M |
| 2 | First Internet Bank of Indiana | 16 | $36.2M | $2.3M |
| 3 | Manufacturers and Traders Trust Company | 32 | $32.3M | $1.0M |
| 4 | Northeast Bank | 112 | $20.5M | $183K |
| 5 | Readycap Lending, LLC | 16 | $18.8M | $1.2M |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 423390?
NAICS 423390 covers merchant wholesalers distributing flat glass, manufactured homes, prefabricated buildings, ornamental ironwork, wire fencing, and other construction materials not classified under lumber, brick, or roofing codes. Per the U.S. Census Bureau[5], this catchall code captures construction material wholesalers that do not fit into the more specific sibling codes.
How is NAICS 423390 organized within the classification hierarchy?
This code belongs to Industry Group 4233 (Lumber and Other Construction Materials Merchant Wholesalers), Subsector 423 (Merchant Wholesalers, Durable Goods), and Sector 42 (Wholesale Trade). It is the residual code in Industry Group 4233, alongside 423310 (lumber), 423320 (brick and stone), and 423330 (roofing and siding).
What is the SBA size standard for NAICS 423390?
The SBA[7] sets the size standard at 200 employees. Businesses with fewer than 200 employees qualify as small businesses for federal contracting preferences and SBA-backed loan programs.
Which NAICS codes are most closely related to 423390?
Sibling codes 423310 (lumber), 423320 (brick and stone), and 423330 (roofing and siding) cover specifically defined construction material categories. Glass and glazing contractors (238150) are customers. Per Census Bureau NAICS references[11], this residual code covers products excluded from the other three Industry Group 4233 codes.
What industries interact most with other construction material wholesalers?
Glazing contractors (238150) purchase flat glass. Fence installation contractors purchase wire fencing and accessories. Manufactured home dealers source inventory from wholesale distribution. Per Bureau of Labor Statistics[6] data, construction trade employment influences demand across all product segments in this diverse classification.
What specific activities are included in NAICS 423390?
Activities include distributing flat glass, manufactured homes, prefabricated buildings, wire fencing, chain link fence systems, ornamental ironwork, glass block, shower doors, and specialty construction hardware. Per Census Bureau definitions[5], materials like lumber, brick, stone, roofing, siding, electrical supplies, and insulation are excluded and classified elsewhere.
Can other construction material wholesalers access SBA loans?
Yes. Distributors with fewer than 200 employees qualify for SBA loan programs[8] including 7(a) loans for inventory and working capital, 504 loans for warehouse facilities and delivery equipment, and microloans for smaller capital needs. Glass cutting equipment and specialized transport vehicles represent common capital investments.
Where are other construction material wholesalers concentrated in the United States?
Distribution operations follow construction activity patterns, with concentrations in high-growth Sun Belt states like Texas, Florida, Arizona, and the Carolinas. Manufactured home distributors cluster in the Southeast and Midwest where demand for factory-built housing is strongest. Glass distribution operations spread across metropolitan areas to serve local glazing contractor markets with rapid delivery capabilities.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Bureau of Labor Statistics bls.gov
- [7]SBA size standard publications sba.gov
- [8]SBA lending programs sba.gov
- [9]SBA 7(a) loans sba.gov
- [10]504 loans sba.gov
- [11]Census Bureau NAICS references census.gov
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