NAICS 4233: Lumber and Other Construction Materials Merchant Wholesalers
Industry group
Code facts
- Part of
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42
- 423
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42
- Codes under it
- 4
- Contract awards
- 816 In the last 12 months
- Contract obligations
- $82,302,558 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau and contract spending from SAM.gov/FPDS.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | -$12,321 |
| FY2026 | $27,901,754 |
| FY2025 | $82,302,558 |
| FY2024 | $27,894,248 |
| FY2023 | $64,216,749 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | TW Metals, Inc. | $15,647,821 | |
| 2 | I-Solutions Direct, Inc. | $7,178,334 | |
| 3 | Sigma International Construction LLC | $1,060,700 | |
| 4 | Structural Hardware And Supply, Inc. | $933,535 | |
| 5 | Al Muamroon Trading | $464,906 | |
| 6 | Astrea Project Management & Trading Services | $402,056 | |
| 7 | Bayland Group S.A | $279,105 | |
| 8 | Amerifence LLC | $233,339 | |
| 9 | Nucell Communications Inc. | $227,469 | |
| 10 | Seikitokyu Kogyo Co., LTD. | $183,505 |
See the full FY2025 ranking of NAICS 4233 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Defense Logistics Agency | $22,842,031 | |
| 2 | Department of State | $1,359,493 | |
| 3 | Air Force | $1,115,703 | |
| 4 | International Boundary and Water Commission U.S.-Mexico | $933,535 | |
| 5 | Department of Justice | $613,506 | |
| 6 | Department of the Army | $386,930 | |
| 7 | Department of Homeland Security | $311,856 | |
| 8 | Department of Transportation | $244,280 | |
| 9 | Department of Health and Human Services | $51,318 | |
| 10 | Smithsonian Institution | $34,944 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 5450 Miscellaneous Prefabricated Structures | $22,839,346 | |
| 2 | Y1PZ Construction of Other Non-Building Facilities | $1,060,700 | |
| 3 | 3825 Road Clearing, Cleaning, and Marking Equipment | $933,535 | |
| 4 | 5680 Miscellaneous Construction Materials | $865,524 | |
| 5 | 5610 Mineral Construction Materials, Bulk | $684,377 | |
| 6 | 5660 Fencing, Fences, Gates and Components | $460,808 | |
| 7 | 5510 Lumber and Related Basic Wood Materials | $346,293 | |
| 8 | 5650 Roofing and Siding Materials | $189,849 | |
| 9 | 5530 Plywood and Veneer | $152,041 | |
| 10 | 5640 Wallboard, Building Paper, and Thermal Insulation Materials | $89,677 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Illinois | $15,570,378 | |
| 2 | Pennsylvania | $6,840,769 | |
| 3 | Texas | $1,161,004 | |
| 4 | New Jersey | $258,326 | |
| 5 | Louisiana | $223,582 | |
| 6 | Missouri | $152,041 | |
| 7 | Virginia | $137,546 | |
| 8 | Northern Mariana Islands | $133,727 | |
| 9 | Ohio | $79,964 | |
| 10 | Colorado | $45,220 | |
| 11 | Florida | $38,506 | |
| 12 | Maryland | $37,403 | |
| 13 | North Carolina | $29,954 | |
| 14 | Oklahoma | $16,811 | |
| 15 | Connecticut | $12,634 | |
| 16 | Georgia | $12,508 | |
| 17 | New York | $11,760 | |
| 18 | Indiana | $2,982 | |
| 19 | California | $1,223 |
Show all 19
Shares are of everything obligated under NAICS 4233 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 1,573 listed here. See the rest on GovTribe.
Codes under 4233
Definition
This industry group comprises establishments primarily engaged in the merchant wholesale distribution of lumber, plywood, millwork, and wood panels; brick, stone, and related construction materials; roofing, siding, and insulation materials; and other construction materials, including manufactured homes (i.e., mobile homes) and/or prefabricated buildings.
Quick answers
What is NAICS 4233?
NAICS 4233 is Lumber and Other Construction Materials Merchant Wholesalers, an industry group in NAICS 42, Wholesale Trade.
What codes are under NAICS 4233?
NAICS 4233 has 4 codes under it with their own GovTribe pages, including 42331 Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers; 42332 Brick, Stone, and Related Construction Material Merchant Wholesalers; and 42333 Roofing, Siding, and Insulation Material Merchant Wholesalers.
How much do federal agencies spend under NAICS 4233?
Federal contracts under NAICS 4233 obligated $82,302,558 in fiscal year 2025 and $202,302,988 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 4233?
The contractors with the most obligated under NAICS 4233 in fiscal years 2026 and 2027 are TW Metals, Inc. ($15,647,821); I-Solutions Direct, Inc. ($7,178,334); and Sigma International Construction LLC ($1,060,700).
Which agencies buy the most under NAICS 4233?
The agencies that obligated the most under NAICS 4233 in fiscal years 2026 and 2027 are Defense Logistics Agency ($22,842,031), Department of State ($1,359,493) and Air Force ($1,115,703).
Which PSC codes are used with NAICS 4233?
The PSC codes with the most obligated under NAICS 4233 in fiscal years 2026 and 2027 are 5450 Miscellaneous Prefabricated Structures; Y1PZ Construction of Other Non-Building Facilities; and 3825 Road Clearing, Cleaning, and Marking Equipment.
Where is the work under NAICS 4233 performed?
By place of performance, the states with the most contract obligations under NAICS 4233 over the last 12 months are Illinois ($15,570,378), Pennsylvania ($6,840,769) and Texas ($1,161,004).
What is the latest contract opportunity under NAICS 4233?
The latest contract opportunity under NAICS 4233 is 19PK4027Q5001 Gravel Pulverization Services, solicitation from Department of State, posted October 22, 2026.
On GovTribe
See everything under NAICS 4233
- Federal contract opportunities, awards and IDVs under this code
- Funding analysis by contractor, agency and set-aside
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