U.S. Homebuilders Are Still Pressuring Trump to Drop Canadian Lumber Tariffs

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The price tag on Canadian lumber has come down, but U.S. homebuilders are not treating that as victory. After the Commerce Department’s latest review reduced the main antidumping and countervailing duty rate on most Canadian softwood lumber, the National Association of Home Builders is still pressing the Trump administration to go further—suspend building-material tariffs and negotiate a new lumber agreement with Canada.

The timing is politically sensitive. Builder confidence has fallen to levels last seen in 2012, mortgage rates are above 7%, and new single-family construction weakened again in September. For builders trying to hold prices down while financing, labor and material costs remain elevated, the lumber fight has become part of a broader affordability argument: even if tariffs are not the biggest housing cost, the industry says Washington should not deliberately add another one.

A Duty Cut Still Leaves a 34.75% Barrier

The latest Commerce Department review delivered meaningful relief on paper. The combined “all others” antidumping and countervailing duty rate on Canadian softwood lumber was cut from roughly 35.16% to 24.75%, with the final results published in the Federal Register on October 19. Individual producers face different combined rates under the review: West Fraser is at 20.02%, Resolute at 25.55% and Canfor at 31.11%. For many Canadian shipments, however, those trade-remedy duties are only one layer of the cost at the border.

The Trump administration also applies a separate 10% Section 232 tariff on covered softwood timber and lumber, imposed after a national-security investigation. That puts the headline burden for the “all others” rate at 34.75%. NAHB therefore sees the October reduction as progress without resolution. The builders’ group is still asking the administration to suspend tariffs on building materials, including Canadian lumber, and to negotiate a new bilateral softwood lumber agreement designed to eliminate the duties. In other words, the pressure campaign did not end when Commerce lowered the annual review rate; it simply moved to the next stage.

Why Builders Keep Calling Tariffs a Housing Tax

Homebuilders’ argument is straightforward: import duties may be collected at the border, but construction companies still have to price homes in a market where material costs, financing expenses and buyer budgets are already under strain. In NAHB’s April 2025 builder survey, 60% of respondents said suppliers had already raised or announced higher material prices because of tariffs. Suppliers’ reported increases averaged 6.3%, and builders estimated that the typical effect of recent tariff actions—not Canadian lumber alone—was about $10,900 per home.

That distinction matters. The $10,900 figure covers a broader tariff environment rather than providing a clean estimate of the Canadian lumber duty by itself. Still, builders point to it as evidence that trade policy can compound an already expensive construction cycle. NAHB told Congress in May 2026 that construction material costs had climbed 46.1% since February 2020, compared with a 24.7% rise in overall inflation over the same period. Recent economic research also supports the broader idea that tariffs can reach consumers: an NBER study of the 2025-26 tariff cycle estimated that about 26% of tariff increases passed through to consumer prices, including indirect effects through inputs and reduced import competition. That research was economy-wide rather than lumber-specific, but it reinforces why builders treat tariffs as a cost risk rather than simply a charge absorbed abroad.

Canada Still Fills a Supply Gap U.S. Mills Cannot Quickly Replace

Canadian lumber remains difficult to remove from the U.S. housing equation because of sheer scale. NAHB estimates that Canada supplies roughly 85% of U.S. softwood lumber imports and nearly one-quarter of the softwood lumber available in the American market. The United States imports roughly one-third of the lumber it consumes. In 2024, Canadian softwood lumber exports to the United States were valued at about $5.1 billion, representing roughly 74% of the value of all U.S. softwood lumber imports.

Those numbers explain why builders view the dispute differently from domestic lumber producers. A tariff can create an incentive for U.S. mills to invest and expand, but added capacity does not appear overnight. NAHB’s analysis of Federal Reserve and Census data found that U.S. sawmill output was largely unchanged from 2023 into early 2026. On a four-quarter moving-average basis, production slipped 0.4% in the first quarter of 2026, while estimated full production capacity was 6% lower than a year earlier. For builders, that creates a practical concern: restricting a major supplier before domestic output can fill the gap may leave the housing market paying more for the same amount of wood.

Trump’s Case Is About Industrial Resilience, Not Cheap Lumber

The White House has framed the lumber tariff around national security and domestic industrial capacity rather than near-term housing affordability. In its September 2025 Section 232 proclamation, the administration said wood-product imports were contributing to mill closures, weakening supply chains and reducing utilization of U.S. production capacity. It argued that lumber is important not only for civilian construction but also for defense facilities, transportation, energy infrastructure and other critical uses. The resulting policy imposed a 10% tariff on covered softwood timber and lumber beginning October 14, 2025.

The administration’s theory is that higher import costs can make domestic production more attractive, encouraging investment, mill modernization, employment and greater self-sufficiency. The White House has also argued that the United States possesses substantial raw materials and practical production capacity, even though imports continue to fill a sizable portion of current demand. That position has strong support from the U.S. Lumber Coalition, which represents domestic producers and praised Commerce’s October 2026 duty decision as continued enforcement against what it calls subsidized and unfairly traded Canadian lumber. The policy divide is therefore fundamental: builders emphasize the immediate cost and availability of supply, while producers emphasize the long-term value of protecting and expanding U.S. capacity.

This Lumber Fight Has Been Running for More Than Four Decades

The current clash is not simply a new front in the broader Trump-Canada trade war. U.S. lumber producers have challenged Canadian softwood lumber practices since 1982, repeatedly arguing that Canadian forestry policies and government support give producers an unfair advantage. The dispute has moved through multiple rounds of countervailing-duty cases, antidumping investigations, negotiated settlements and binational legal challenges. That history helps explain why both sides can describe the latest tariff fight as a continuation of a much older argument rather than a stand-alone policy created in the last two years.

The most important period of relative stability came with the 2006 U.S.-Canada Softwood Lumber Agreement. It entered into force in October 2006, was later extended through October 2015 and returned more than $5 billion in collected duty deposits to Canadian exporters. After the agreement expired, the countries failed to secure a successor. U.S. investigations resumed in late 2016, provisional duties followed in 2017 and final orders took effect in early 2018. Litigation has continued alongside the annual administrative reviews. On October 5, 2026, a NAFTA binational panel affirmed Commerce’s second remand determination in one long-running countervailing-duty challenge, effectively ending that particular case without ending the wider lumber dispute.

Housing’s Weak Backdrop Makes Every Added Cost More Sensitive

The industry’s lobbying has more force because it is occurring during a sharp housing slowdown. The NAHB/Wells Fargo Housing Market Index fell to 29 in October 2026, its lowest reading since June 2012. Forty-three percent of builders reported cutting home prices, the highest share recorded during the 2020-2026 period, while 65% said they were using sales incentives. Buyer traffic was also at its weakest level since April 2012, excluding the extraordinary collapse at the start of the pandemic.

Financing conditions are a major part of the problem. Freddie Mac reported that the average 30-year fixed mortgage rate was 7.40% on October 15. Meanwhile, Census Bureau data released October 20 showed total housing starts running at a seasonally adjusted annual rate of 1.221 million in September, down 5.2% from August and 7.4% from a year earlier. Single-family starts fell 4.6% to 859,000, while single-family permits dropped 4% to 845,000. None of those figures proves that lumber tariffs caused the slowdown. They show why builders are unusually resistant to any policy that could add cost or uncertainty when demand is already weak.

Lumber Prices Show Why the Tariff Effect Is Real but Not Mechanical

Lumber does not move in a straight line with tariff rates. Prices also respond to housing demand, mill production, inventories, transportation, energy costs and expectations about future supply. In July 2026, the producer-price measure for softwood lumber jumped 7.4% in one month and stood 17.3% above its year-earlier level. Yet by August 28, a widely followed framing-lumber index was at $521.35 per thousand board feet—down 6.6% from a month earlier even though it was still 9.3% higher than a year before.

That volatility is important because it cuts against overly simple claims on both sides. A tariff does not automatically translate dollar-for-dollar into the retail price of every new home, but that does not make it costless. Builders also experience the market differently depending on their size. In NAHB’s July 2026 survey, the median increase in material costs for the same house was 6.7% over the prior year. Builders that started five or fewer homes in 2025 reported a median increase of 9.1%, compared with only 1.8% among builders with at least 100 starts. Large companies may have more room to stockpile materials, negotiate contracts or absorb short-term swings; smaller firms often have less protection.

Congress Is Becoming Part of the Pressure Campaign

The builders’ strategy now extends beyond the White House. In September, Rep. Nanette Barragán introduced the House version of the Housing Tariff Exclusion Act, H.R. 10416, after working with NAHB and other housing groups. The proposal would direct the Commerce Department to create a process for businesses to seek tariff exclusions for homebuilding materials, including expedited treatment for certain critical products. A Senate companion, S. 3943, led by Sens. Jacky Rosen and Chris Coons, has been referred to the Senate Finance Committee.

The legislation is important, but it would not simply erase the Canadian lumber dispute. The House measure applies to qualifying tariffs implemented since January 19, 2025, while expressly excluding antidumping, countervailing and Section 201 safeguard duties. That means the 24.75% “all others” antidumping/countervailing layer on Canadian softwood lumber would remain outside the proposed relief process. The newer 10% Section 232 lumber tariff is different and could fall within the legislation’s broader exclusion framework if the statutory requirements are met. That limitation helps explain why NAHB is pursuing two tracks at once: congressional tariff exclusions for building materials and a negotiated U.S.-Canada lumber agreement that addresses the older trade-remedy duties directly.

Dropping the Tariffs Would Help at the Margin—Not Solve Housing by Itself

Domestic lumber producers reject the builders’ premise that Canadian duties are a major housing-affordability problem. The U.S. Lumber Coalition argues that softwood lumber typically represents only about 1% to 2% of the selling price of a newly constructed home and that trade enforcement supports domestic investment and supply. Its October 2026 statement backed the new 24.75% duty result and accused Canadian producers of continuing to dump subsidized lumber into the U.S. market. Those claims come from an industry group with a direct stake in maintaining the duties, just as NAHB has a direct stake in reducing builders’ input costs.

The broader housing numbers suggest the most defensible conclusion lies between the competing slogans. Removing or reducing tariffs could lower a policy-imposed cost and make material pricing more predictable, but it would not neutralize 7%-plus mortgage rates, land constraints, labor shortages or regulatory expenses. NAHB reported in September that government data pointed to a shortage of roughly 300,000 construction workers, while its 2026 regulatory-cost study estimated that federal, state and local regulation accounted for 26.4% of the average sales price of a new single-family home. That is why a new softwood lumber agreement remains attractive to builders: not as a cure for the housing crisis, but as one achievable way to stop adding trade friction to a market already carrying plenty of it.

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