The Tariff Impact on Construction: An Owner’s 2026 Guide

This year the tariff impact on construction is huge. Tariffs on imported building materials have changed the math on nearly every construction project. Steel, aluminum, copper, lumber, cabinets, and cement all carry added import taxes today. For an owner planning a new build or renovation, that means real added cost. It also means real potential for disputes if nobody spells out who pays for it.

This guide covers the current tariffs on major construction materials, how contractors calculate and pass those costs along, and how an owner should budget for them. Tariff rates have changed repeatedly through 2026. Treat the numbers below as a general overview. Always ask a contractor or supplier to confirm current rates before signing a contract.

How Construction Material Tariffs Actually Work

A tariff is a tax the U.S. government charges on goods imported from another country. The tax is paid when the goods cross the border, not when a builder later buys the material. Construction materials are currently taxed under a few different legal tools, sometimes more than one at once.

Section 232 Tariffs

The main tool behind construction material tariffs. The President can tax a specific import, like steel or lumber, by declaring it a national security concern. These tariffs have no built-in end date and apply to nearly every country.

Antidumping & Countervailing Duties (AD/CVD)

Target specific foreign producers found selling below fair value or benefiting from government subsidies. Rates are set mill by mill, so two shipments of the same material can carry different duties.

Section 122 Surcharge

A general tariff Congress capped at 15% and 150 days by law. The version in effect for most of 2026 expired automatically on July 24, 2026.

Reciprocal (IEEPA) Tariffs

A broad tariff the President imposed on most countries in 2025. The Supreme Court ruled in February 2026 that the President lacked authority to impose it, and struck it down. This ruling did not touch Section 232 tariffs on steel, aluminum, copper, or lumber.

For an owner this means a tariff is not always a single number. A steel product from China, for example, can carry a Section 232 tariff and a separate tariff at the same time. The combined rate can run well above either number alone.

Steel and Aluminum Tariffs for Construction Projects

Steel and aluminum show up throughout construction. Structural framing, rebar, roofing, siding, ductwork, and window frames all rely on one or both metals. As of mid-2026, both carry Section 232 tariffs that apply almost everywhere.

• 50% tariff – most raw steel and aluminum products (coils, sheet, bar stock)
• 25% tariff – most finished products made substantially of steel or aluminum
• 15% tariff – a short list of exceptions, including certain agricultural and industrial equipment
• Lower rates for some allies – the EU, UK, Japan, and South Korea have negotiated caps on their combined rate
• Canada and Mexico – taxed only on the portion of a product that doesn’t have made-in-the-USA content

The one detail that catches owners off guard is the tariff applies to the product’s full price, not just the metal inside it. A fabricated steel component is taxed on labor and materials together, not on raw metal value alone.

Copper Tariffs and Their Effect on Wiring and Plumbing

It carries the same Section 232 program as steel and aluminum, and it shows up in electrical wiring, plumbing supply lines, and HVAC components.

• 50% tariff on raw copper products
• 25% tariff on copper derivatives like fittings and wire assemblies

Copper prices were already volatile before tariffs, since copper trades as a global commodity tied to electronics and energy demand. Tariffs add a second layer of price movement on top of that. It’s one of the harder materials to budget for months ahead of time.

Softwood Lumber and Timber Tariffs Explained

Softwood lumber is the framing lumber used in most wood-built homes. It carries two separate tariffs that stack on top of each other.

• 10% Section 232 tariff applies to softwood timber and lumber from almost every country, including Canada
• 25% to 35% antidumping and countervailing duties apply only to Canadian lumber, a long-running trade dispute. Commerce has signaled a reduction toward roughly 25%, with a final rate expected later in 2026

Combined, Canadian softwood lumber has carried a total added cost of roughly 35% to 45% for much of 2026. These duty rates also aren’t the same. Commerce assigns individual rates mill by mill, so two truckloads of Canadian lumber can carry different duty costs. Ask a supplier which mill the lumber came from as it can change the landed price.

Kitchen Cabinet, Vanity, and Upholstered Wood Furniture Tariffs

Cabinets, vanities, and upholstered wood furniture fall under their own Section 232 tariff program, separate from general lumber tariffs.

• 50% tariff on kitchen cabinets and bathroom vanities, applied globally
• 25% tariff on upholstered wood furniture, applied globally
• Scheduled increase delayed: a planned rate hike on both categories was pushed back one year, to January 1, 2027. A project with a long lead time that slips past that date could see cabinet pricing rise mid-project

Cabinets originating in China face an unusually hefty total. Stack the 50% Section 232 tariff, a roughly 25% Section 301 tariff, and antidumping duties together, and the combined rate may exceed 100% of the product’s value.

That’s a major reason many cabinet suppliers have shifted sourcing toward Vietnam and Malaysia. Confirm current country-specific rates before assuming a lower-tariff country of origin still applies. These can shift as well.

Cement Tariffs and What Drives Them

Cement is heavy and cheap to make relative to its shipping cost, so it’s rarely hauled far. Most U.S. cement imports come from just a few nearby countries, which makes cement tariffs a regional issue more than a national one.

Mexico

The largest source of U.S. cement imports, and the longest-running tariff story. Antidumping duties on Mexican cement date back to 1990. They have historically ranged from roughly 27% to 73% depending on the producer, on top of a low base import tax

Canada

A smaller but growing source, generally taxed at lower rates than Mexican cement, though a new round of tariffs targeting a broad list of Canadian goods took effect in August 2026

China

A minor source for cement specifically, but subject to the same general China tariffs that apply across building materials

Cement tariffs matter most to owners building in border states, where nearby Mexican or Canadian plants would otherwise be the cheapest source. Building a new domestic cement plant takes three to five years, so tariffs don’t create fast relief. Expect cement-heavy projects near the border to feel this more than projects elsewhere.

Plywood Tariffs: Structural vs. Decorative Panels

Plywood tariffs split into two very different stories, and owners should know which one applies to their project.

Structural Softwood Plywood

This material (roof and wall sheathing) generally falls under the same 10% Section 232 wood tariff that covers softwood lumber, described above.

Hardwood & Decorative Plywood

This material (used in cabinetry, millwork, finish carpentry) faces a far steeper set of duties. In 2026, the Commerce Department finalized antidumping and countervailing duties on hardwood plywood from three countries:

• China (antidumping margin of roughly 187%, plus a countervailing rate near 81%)
• Indonesia (antidumping duties from about 20% to 85%, plus countervailing duties up to 129%)
• Vietnam (antidumping duties near 196%, plus countervailing duties up to 27%)

Those hardwood plywood numbers are not final. Finalizing comes when the U.S. International Trade Commission confirms the domestic industry was actually injured by the imports. That review was ongoing as of mid-2026.

Until it wraps up, treat these as very likely but not yet permanent. If confirmed, hardwood plywood from these three countries becomes one of the most heavily taxed building materials on this list. This makes a strong case for sourcing materials domestically or from an unaffected country instead.

Other Construction Materials Affected by Tariffs

Steel, aluminum, copper, lumber, cabinets, cement, and plywood carry the largest and best-documented tariffs. A few other materials common in residential and light commercial work are worth a quick check before ordering:

• Gypsum wallboard (drywall) – Chinese-made drywall has carried a Section 301 tariff since 2018, now layered with newer, broader China tariffs
• Glass – window and door glass from China falls under general Section 301 building material tariffs
• PVC pipe and plastic building products – also fall under Section 301 when sourced from China
• Aluminum windows and doors – taxed at the combined aluminum rate plus Section 301, one of the higher-taxed finish products on the market

Material from China carries the highest combined rate, because multiple tariff programs stack on top of each other. Ask a supplier for the country of origin on every major material order, not just the ones that sound imported.

Do Construction Tariffs Have Expiration Dates?

Some do. Most don’t. The difference comes down to which legal tool created the tariff, and it’s worth understanding the difference between a true tariff and a surcharge.

• A tariff is a tax on a category of imported goods. It stays in place until the government issues a new order changing or ending it. There’s no automatic expiration date.
• A surcharge is a temporary tax, usually capped by law at a specific rate and a specific length of time. It’s built to expire on its own.

The Section 232 tariffs on steel, aluminum, copper, lumber, and cabinets are true tariffs. They have run since 2025 or 2026 with no scheduled end date, though the rates within them do get adjusted periodically.

A temporary Section 122 surcharge, added to many other goods, is the opposite example. It was capped by law at 15% and 150 days, and it expired automatically on July 24, 2026.

This matters for a project budget in a practical way. A tariff on your material’s category is likely to still be there when your materials ship in six months. A surcharge might not be. Ask which type applies before locking in a long-term price.

Courts have struck down or narrowed several tariff programs in 2026, and administrations have replaced them with new ones within days. The Supreme Court’s February 2026 ruling against the broad “reciprocal” tariff program is the biggest example. It did not affect Section 232 tariffs, but it shows how quickly the legal ground can shift under a specific program.

Which Countries Are Imposing Tariffs on U.S. Construction Imports

This guide has focused on tariffs the United States charges on imported materials. This is what affects a U.S. owner’s project cost directly. However, several trading partners have imposed their own retaliatory tariffs on American goods in response.

Canada

They have placed retaliatory tariffs on a range of U.S. goods in response to U.S. metal and softwood actions. Canada has restricted some U.S. alcohol and dairy access in ongoing trade disputes

China

China has imposed its own tariffs on U.S. exports as part of the broader trade relationship. It has, however, periodically granted exclusions on specific product categories

The European Union

The EU has held reciprocal tariff discussions with the U.S. and secured reduced rates on some categories through direct negotiation

These retaliatory tariffs mostly affect U.S. exporters selling into those countries. Not a U.S. owner buying imported materials domestically. They’re included here for background, since news coverage of “tariffs” often blends both directions together. This can confuse the actual cost picture for a construction project.

What Comes Next: Getting Tariffs into Your Bid

Knowing the current rates is only part of the picture. Another part is how a contractor turns these numbers into a bid. Do tariffs show up as their own line item, and what happens if they don’t? That’s covered in the next partner guide: How Contractors Pass Construction Tariff Costs to Owners. That guide walks you through how to read a bid for tariff exposure. It tells you how to budget for tariffs separately from your contingency. It also tells you how tariffs can affect your delivery schedule.