Real records.
Clear comparisons.

Study scope and evidence sources.

The numerical foundation is recorded imports cleared in Alberta. The study covers 26 counter-tariff-matched families plus 1 additional antidumping family. It is an exploratory selection, not every construction material or every trade measure.

Families may appear in more than one group; do not add these counts together. The construction use is inferred, not recorded by customs.

How were the products selected?

The study cross-references construction-related products covered by Canadian trade measures on U.S.-origin goods with import records cleared through customs in Alberta.

1. Identify relevant construction products. Review Finance Canada’s counter-tariff list and the Canada Border Services Agency (CBSA) antidumping product descriptions for goods with potential construction or infrastructure uses.
2. Match customs codes to Alberta import records. Link the listed eight-digit tariff items (HS8) to the ten-digit Harmonized System statistical product codes (HS10) in Statistics Canada’s Canadian International Merchandise Trade (CIMT) records. Retain Alberta-clearance observations for January 2023–December 2025. Antidumping inclusion is checked separately against the legal product description and origin.
3. Group the matching products into research families. The selected catalogue contains 27 families: 26 with counter-tariff code matches and one additional family, copper pipe fittings, included through the U.S.-origin antidumping screen.
4. Keep all recorded origins for comparison. Calculate import values and U.S. shares for each selected family using its recorded imports from all countries. This makes it possible to compare U.S. sourcing with other origins.

The trade-measure review is dated 6 October 2026; the import baseline is 2023–2025. These are separate evidence windows. The charts cover the complete selected families, including items that may fall outside a measure. They do not measure duties paid or prove that every import in a family is subject to a tariff.

Quality checks and data handling.

The selected import records retain reported values. Quality checks identified zeros, blank state fields and potential inconsistencies. No selected records were removed as a result of the duplicate, negative-value or quantity checks.

Percentages use 66,154 selected records. Checks were documented on 6 October 2026. These controls do not constitute an independent transaction-level audit.

How were the indicators calculated?

Trace each family to its customs codes.

The study links 27 research product families to 91 international six-digit product subheadings (HS6) and 367 detailed ten-digit Canadian import classifications (HS10) found in the selected Alberta records. These are different levels of detail, not separate sets of imports to add together.

These are official customs product-classification codes used to report imported goods. The international system is the Harmonized Commodity Description and Coding System, commonly called the Harmonized System (HS). It is used for international goods trade, not only for construction. The study did not create these official codes; it created readable family names and matched them to existing classifications.

Code matches are a screening tool. Legal product descriptions, origin, dates and relief determine actual applicability. A 2026 policy snapshot is not a calculation of duties paid during 2023–2025.

Download the working outputs.

These comma-separated values files (CSV) contain the derived outputs for the selected 27 families and download directly from this page. They are derived research outputs, not separate official datasets. Treat customs codes as text when importing into Excel.