U.S. imports of Prefabricated Buildings of Wood (HS 940610) totaled $26.1M in August 2026, imported from 43 countries.
Importers of Prefabricated Buildings of Wood paid $1.3M in duties in August 2026, an average duty rate of 4.87% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataWood prefabricated buildings — including panelized wall systems, log cabin kits, and modular timber structures — enter the US under a single 10-digit line (9406100000), but their classification can intersect with lumber and wood-products chapters when components are imported separately rather than as a complete building kit. Canada is the dominant supplier, reflecting its proximity, established timber industry, and long history of exporting prefabricated wood structures to the US market. Vietnam and China are also notable sources, and goods from those origins may carry different duty exposure. Importers should confirm that all components of a kit are invoiced and entered together to support the prefabricated-building classification rather than individual lumber or panel classifications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
999 import shipments a month
CBP generally requires that a complete, identifiable kit be entered together to support classification as a prefabricated building. Splitting a kit across multiple entries risks reclassification of individual components as lumber, panels, or other wood products under different chapters. If phased shipment is unavoidable, importers should seek a binding ruling in advance.
At the 6-digit and 10-digit level, this heading does not subdivide by wood species or construction technique — log, panelized, and timber-frame structures all fall under 9406100000. However, species and treatment (e.g., pressure-treated lumber) may affect admissibility under APHIS phytosanitary requirements and should be documented in the import package.
Subheading 2 of 3 in heading 9406
Subheading 940610 · $26.1M of $65.5M
ImportsExports
Imports
$26.1MYoY · free account
Exports
$3.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $276.4M of Prefabricated Buildings of Wood and exported $35.3M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 940610 — Prefabricated Buildings of Wood, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9406100000 | Prefabricated Buildings of Wood | $26.1M | 4.87% | 28.43% | $1.3M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9406100000 | Prefabricated Buildings of Wood | $3.7M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Canada and Mexico together supply 72% of it. China pays 39.9% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
71.6% enters free of duty; duty collected equals 4.87% of imports for consumption.