Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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Prefabricated buildings of wood

In short

  • The US imported $276.4M of this product over the 12 months to August 2026, up 4.2% on the year before.
  • Canada is the largest supplier, with 56.7% of US imports; Mexico is next, with 14.9%.
  • China is the cheapest main supplier before and after freight and duty, landing at $301.35 each.
  • Duty paid averaged 4.9% of the value of imports in August 2026, down 3.1 points on a year earlier.
  • Canada is gaining share: 51.2% over the last 12 months, up from 38.9%.
  • US exports were $35.3M over the last 12 months; the largest market is Canada, with 74.9%.

US imports, Aug 2026

$26.1M

↑ +2.1% vs Aug 2025

Last 12 months

$276.4M

↑ +4.2% vs the 12 months before

Average duty paid

4.9%

↓ −3.1 pts vs Aug 2025

Top supplier

Canada

56.7% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugDuty ↑↓
Show the numbers
MonthUS imports
August 2025$25.5M
September 2025$22.0M
October 2025$27.0M
November 2025$16.1M
December 2025$17.2M
January 2026$19.3M
February 2026$21.3M
March 2026$22.7M
April 2026$22.2M
May 2026$31.8M
June 2026$24.1M
July 2026$26.6M
August 2026$26.1M

What changed

  • US imports were $26.1M in August 2026, down 1.9% from July 2026 and up 2.1% from August 2025.
  • Over the 12 months to August 2026 they totalled $276.4M, up 4.2% on the 12 months before.
  • Biggest moves in market share since July 2026: Canada up from 46.8% to 56.7%, Vietnam down from 15.7% to 10.3%.
  • Average price from Vietnam fell 44% since July 2026, to $444.92 each.
  • Duty paid on imports from China rose from 35.7% to 39.9% of their value since July 2026.

US trade by year

US imports were $276.4M in the 12 months to Aug 2026, up 141% on the 12 months to Aug 2018. US exports were $35.3M, down 2.8%. This code began with the HS 2017 revision in January 2017, taking goods from 9406.00, so its history starts there. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

201820192020202120222023202420252026China ↑China ↑
Show the numbers
PeriodUS imports
12 months to Aug 2018$114.7M
12 months to Aug 2019$136.7M
12 months to Aug 2020$103.6M
12 months to Aug 2021$151.2M
12 months to Aug 2022$184.1M
12 months to Aug 2023$236.7M
12 months to Aug 2024$221.4M
12 months to Aug 2025$265.2M
12 months to Aug 2026$276.4M
  • Canada
  • Vietnam
  • Mexico
  • China
  • All countries
Share of US imports
Show the numbers
PeriodCanadaVietnamMexicoChina
12 months to Aug 201845.6%3.4%18.5%27.2%
12 months to Aug 201964.8%3.5%15.9%11.5%
12 months to Aug 202044.8%9.1%21.7%16.1%
12 months to Aug 202152.7%8.8%17.4%15.3%
12 months to Aug 202244.7%8.0%21.0%13.6%
12 months to Aug 202355.8%6.3%15.7%8.5%
12 months to Aug 202448.1%9.5%11.7%12.7%
12 months to Aug 202538.9%11.1%11.6%16.5%
12 months to Aug 202651.2%15.5%11.0%9.5%
Duty paid, % of value
Show the numbers
PeriodCanadaVietnamMexicoChinaAll countries
12 months to Aug 20180.0%2.6%0.0%2.6%0.9%
12 months to Aug 20190.0%2.6%0.0%14.0%1.8%
12 months to Aug 20200.0%2.6%0.0%27.5%4.8%
12 months to Aug 20210.0%2.6%0.0%27.4%4.6%
12 months to Aug 20220.0%2.6%0.0%27.6%4.3%
12 months to Aug 20230.0%2.6%0.0%27.6%2.8%
12 months to Aug 20240.4%2.6%0.0%27.6%4.4%
12 months to Aug 20250.1%6.4%0.0%28.0%6.5%
12 months to Aug 20260.0%16.9%0.0%32.4%7.4%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$276.4M+4.2%7.4%+1.0 pts$35.3M+23%
12 months to Aug 2025$265.2M+20%6.5%+2.1 pts$28.8M−15%
12 months to Aug 2024$221.4M−6.5%4.4%+1.5 pts$33.9M−11%
12 months to Aug 2023$236.7M+29%2.8%−1.4 pts$37.8M−11%
12 months to Aug 2022$184.1M+22%4.3%−0.3 pts$42.4M+33%
12 months to Aug 2021$151.2M+46%4.6%−0.3 pts$31.8M+5.6%
12 months to Aug 2020$103.6M−24%4.8%+3.1 pts$30.1M−17%
12 months to Aug 2019$136.7M+19%1.8%+0.9 pts$36.1M−0.4%
12 months to Aug 2018$114.7M0.9%$36.3M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

CountryUS importsShareAverage priceDuty paidLast 13 months
Canada$14.8M56.7%+13.5 pts$7,696 each−56%0.0%0.0 pts
Mexico$3.9M14.9%+4.9 pts$24,233 each+370%0.0%0.0 pts
Vietnam$2.7M10.3%−5.9 pts$444.92 each−58%14.2%+1.6 pts
Estonia$1.6M6.1%−0.2 pts$4,197 each+396%9.9%−3.3 pts
China$1.4M5.3%−11.8 pts$278.43 each−47%39.9%+15.2 pts
Finland$304K1.2%−0.6 pts$2,532 each−95%9.8%−2.8 pts
Romania$291K1.1%−0.4 pts$1,387 each−13%10.0%−2.9 pts
Germany$265K1.0%+0.9 pts$22,067 each−20%10.0%−5.0 pts
Other countries (13)$921K3.5%+1.2 pts$774.18 each+81%10.8%+0.3 pts
All countries$26.1M100.0%$1,745 each+16%4.9%−3.1 pts

The 3 largest suppliers had 77.7% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

  • Price
  • Freight and insurance
  • Duty
CountryPriceFreight and insuranceDutyLanded costMake-up
China$184.16 each$48.19 each26.2% of price$69.00 each37.5% of price$301.35 each−35%
Vietnam$628.16 each$84.79 each13.5% of price$80.18 each12.8% of price$793.13 each−13%
Estonia$3,371 each$292.91 each8.7% of price$385.66 each11.4% of price$4,050 each+111%
Canada$9,015 each$95.29 each1.1% of price$0.55 each0.0% of price$9,111 each+71%
Mexico$24,922 each$23.67 each0.1% of price$0.00 each0.0% of price$24,946 each+143%
All countries$1,466 each$74.51 each5.1% of price$80.95 each5.5% of price$1,622 each+11%

Landed at a US port, China was cheapest, at $301.35 each: 62.0% below Vietnam.

Landed cost from Mexico rose 143% on a year earlier, to $24,946 each, mostly on price: $10,247 each then, $24,922 each now.

How the market is shifting

Canada gained the most share: 51.2% of US imports over the last 12 months, up from 38.9% in the 12 months before. China lost the most: 9.5%, down from 16.5%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

  • Canada
  • Vietnam
  • Mexico
  • China
  • All countries
Share of US imports
Show the numbers
MonthCanadaVietnamMexicoChina
September 202434.3%10.3%16.0%14.5%
October 202434.6%6.7%21.5%13.2%
November 202438.1%9.7%9.2%15.6%
December 202431.5%13.0%8.4%15.9%
January 202535.3%16.7%6.9%18.3%
February 202538.9%8.1%6.6%30.3%
March 202548.8%5.4%11.8%17.7%
April 202524.3%12.2%9.4%21.5%
May 202525.4%13.9%11.6%17.7%
June 202556.8%9.5%10.8%9.1%
July 202548.6%14.4%13.0%9.3%
August 202543.2%16.1%10.0%17.1%
September 202558.5%11.7%8.7%9.2%
October 202561.8%12.3%6.4%9.1%
November 202540.7%23.2%9.1%10.8%
December 202538.4%26.8%6.7%11.9%
January 202630.8%29.7%9.9%17.3%
February 202648.6%11.1%10.1%17.9%
March 202649.3%15.8%11.0%9.2%
April 202653.4%15.2%12.1%6.9%
May 202661.1%10.1%9.8%7.6%
June 202652.5%14.7%13.9%5.7%
July 202646.8%15.7%17.3%7.6%
August 202656.7%10.3%14.9%5.3%
Duty paid, % of value
Show the numbers
MonthCanadaVietnamMexicoChinaAll countries
September 20240.1%2.6%0.0%27.6%4.9%
October 20240.0%2.6%0.0%27.6%4.4%
November 20240.0%2.6%0.0%27.6%5.2%
December 20240.0%2.6%0.0%27.6%5.5%
January 20250.0%2.6%0.0%27.6%6.0%
February 20250.0%2.6%0.0%15.4%5.3%
March 20250.7%2.6%0.0%14.7%3.5%
April 20250.1%2.8%0.0%35.5%9.4%
May 20250.1%8.4%0.0%57.6%14.1%
June 20250.0%12.6%0.0%37.4%6.1%
July 20250.0%12.6%0.0%30.3%6.3%
August 20250.0%12.6%0.0%24.8%8.0%
September 20250.0%21.1%0.0%14.7%5.7%
October 20250.0%22.6%0.0%42.4%8.3%
November 20250.0%21.3%0.0%25.0%10.1%
December 20250.0%21.2%0.0%22.4%10.9%
January 20260.0%19.1%0.0%32.4%13.2%
February 20260.0%22.0%0.0%30.1%9.6%
March 20260.0%12.5%0.0%37.8%7.2%
April 20260.0%12.6%0.0%37.6%6.1%
May 20260.0%12.0%0.0%36.7%5.4%
June 20260.0%12.4%0.0%37.6%5.6%
July 20260.0%12.2%0.0%35.7%6.1%
August 20260.0%14.2%0.0%39.9%4.9%

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

  1. January–March 2026 · Duty paid: Vietnam 21.3% → 12.4%, China 23.7% → 35.0%.
  2. July 2025 · Duty paid: Vietnam 5.6% → 16.8%.
  3. April 2025 · Duty paid: China 21.5% → 36.4%.
  4. June 2019 · Duty paid: China 12.4% → 27.6%.
  5. October 2018 · Duty paid: China 2.6% → 12.4%.

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Sweetgrass, MT$56.6M · 20.5%
  2. Long Beach, CA$38.1M · 13.8%
  3. Presidio, TX$26.3M · 9.5%
  4. Los Angeles, CA$14.8M · 5.4%
  5. Port Huron, MI$13.2M · 4.8%

Where US exports go

US exports were $3.7M in August 2026, up 137% from August 2025, and $35.3M over the last 12 months, up 23% on the 12 months before. Fastest-growing market with 3% or more of US exports: Bahamas, up 158%.

MarketLast 12 monthsSharevs 12 months before
Canada$26.4M74.9%+64%
Mexico$2.8M7.9%−61%
Korea, South$1.8M5.0%+12%
Bahamas$1.1M3.1%+158%
Jamaica$512K1.5%+3933%
Panama$351K1.0%+24%
Australia$283K0.8%−49%
Costa Rica$202K0.6%−66%
Other countries (39)$1.9M5.4%+22%
All countries$35.3M100.0%+23%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 119 have reported 2025 so far.

MarketImportsvs year beforeFrom the USUS share
Germany$273.9Min 2025+23%$123K0.0%
Norway$163.5Min 2025+6.2%$15K0.0%
United Kingdom$154.7Min 2025+15%$146K0.1%
Switzerland$91.0Min 2025+8.0%$14K0.0%
Ireland$86.6Min 2025+53%$6K0.0%
Portugal$81.9Min 2025+128%$00.0%
Netherlands$80.4Min 2025−3.0%$1K0.0%
France$78.7Min 2025−2.0%$99K0.1%

The biggest market outside the US is Germany, which imported $273.9M of this product in 2025, under 0.1% of it from the US.

Of these, imports into Portugal grew fastest: up 128% from 2024 to 2025.

Other products under heading 9406: prefabricated buildings. US trade over the 12 months to August 2026.

ProductUS importsUS exports
Prefabricated buildings, other than of woodHS 9406.90$360.3M$287.9M
Modular building units, of steelHS 9406.20$87.4M$84.6M
About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (number of items), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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