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SITCSection 8
U.S. imports of prefabricated buildings (SITC 81100) totaled $62.5M in April 2026, traded with 55 countries.
Importers of Prefabricated Buildings paid $9.3M in duties in April 2026 — an effective duty rate of 25% on $36.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataPrefabricated buildings — structures manufactured off-site and assembled at their final location — occupy a distinct commercial niche serving construction, modular housing, and temporary infrastructure markets. Steel and aluminum-framed prefab structures may be subject to Section 232 tariffs depending on their material composition and country of origin, making origin documentation a critical compliance step. Classification can hinge on whether the shipment constitutes a complete structure or component parts, a distinction that affects both duty treatment and valuation.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
When a prefabricated building is shipped as a complete, unassembled kit with all components included, it is generally classified as a whole under the prefabricated buildings heading. However, if components are imported separately at different times or from different suppliers, each shipment may need to be classified individually, potentially under different headings.
Prefabricated buildings with significant iron or steel content may be subject to Section 232 tariffs, depending on how the article is classified and the country of origin. Importers should verify whether the finished structure or its steel components trigger Section 232 exposure and document the mill origin of steel inputs accordingly.
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Monthly import values over time