U.S. imports of Prefabricated Wood Buildings (NAICS 321992) totaled $35.2M in August 2026, imported from 48 countries.
Importers of Prefabricated Wood Buildings paid $1.5M in duties in August 2026, an average duty rate of 4.15% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Prefabricated Wood Buildings imports of $35.2M in August 2026 ran 14% above the year-to-date monthly average of $31.0M.
Last updated: August 2026 dataFactory-built wood structures—panelized wall systems, modular building sections, and complete prefabricated cabins or garden structures—are manufactured under NAICS 321992 and shipped as flat-pack or pre-assembled modules. Structural panel construction, engineered lumber content (LVL, LSL, I-joists), and compliance with local building codes are the primary commercial and regulatory differentiators. Imports of prefabricated wood buildings may be subject to Section 301 tariffs when originating from China, and the applicable HTS classification depends on whether the structure is complete, incomplete, or shipped as panels. Buyers should confirm that imported structures meet the International Residential Code or applicable state building standards before procurement.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.5K import shipments a month
Classification depends on the degree of completion at time of importation. A complete or substantially complete building presented in disassembled form may be classified as a complete article under GRI 2(a), while individual panels not constituting a complete structure are typically classified by their component material. A binding ruling from CBP is the most reliable way to resolve classification before importation.
Importers should secure third-party engineering certifications demonstrating compliance with the applicable model building code (IBC or IRC) and any state-specific amendments. Some jurisdictions require approval from the state's industrialized building program before a prefabricated structure can be installed, so buyers should confirm local requirements prior to finalizing supplier contracts.
National industry 2 of 3 in naics industry 32199
National industry 321992 · $35.2M of $333.1M
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Imports · August 2026
origin
Canada and Mexico together supply 76% of it. China pays 40.0% duty; Mexico 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census publishes state breakdowns for NAICS to the 4-digit level only. See NAICS 3219 for those.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$35.2MYoY · free account
Exports
$3.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $351.1M of Prefabricated Wood Buildings and exported $35.3M.
Through August 2026. Source: U.S. Census Bureau.