Lumber Prices Dip But Canada Tariffs Still Sting Remodelers

Framing lumber got a little cheaper last week, but don't expect it to show up in your remodeling quote just yet.

What happened

The price of framing lumber fell to $506.76 per 1,000 board feet on September 25, according to the National Association of Home Builders (NAHB), citing Madison's Lumber Price Index.

The bigger news is on tariffs. NAHB reports that preliminary antidumping and countervailing duty rates on Canadian softwood lumber have both been trimmed: the antidumping rate fell from 20.6% to 10.7%, and the countervailing duty rate fell from 14.6% to 14.2%. Combined, that's roughly 10 percentage points lower than a year ago, down from 35.2% to 25.9%. NAHB notes these rates are preliminary, not final.

That reduction doesn't tell the whole story, though. A separate 10% tariff under Section 232 remains in place, which NAHB says brings the effective combined rate on Canadian softwood imports to 35.9%.

NAHB also points out that softwood lumber isn't just framing studs: it's an input into plywood, OSB, and manufactured products like cabinets, windows, doors and trusses, meaning tariff and price swings ripple into more of a project's materials bill than the framing line item alone suggests.

Why relief is slow to arrive

NAHB's own analysis is useful here: falling mill prices don't reach homeowners quickly. Retailers and lumberyards, which have less buying power than wholesalers, tend to pass along higher costs fast but pass along savings only after mill prices stay low for an extended stretch. NAHB estimates this lag can run from a few weeks to a couple of months, and it varies by the size of the builder and supplier involved. In short: one week's price dip and one tariff reduction are early signals, not a reason to expect a meaningfully cheaper quote right away — especially with the 35.9% combined rate on Canadian softwood still in effect.

What it means for your project

Lumber is only one input in most remodeling budgets, but it carries more weight in framing-heavy work:

• Decks. Pressure-treated pine and cedar decking are both softwood-lumber-dependent, so this is one of the categories most exposed to tariff swings. See our Deck building for current typical costs, currently around $13,000 for a mid-range build.
• Fences. Pressure-treated pine fencing tracks lumber costs closely; cedar less directly but still exposed. Check Fence installation for a breakdown by material.
• Kitchen cabinets. NAHB flags cabinets specifically as a manufactured product with embedded softwood lumber costs, alongside windows and doors. Our Kitchen remodel shows typical costs by cabinet tier.
• Windows. Timber-framed windows are the most lumber-sensitive option; vinyl and aluminium frames are largely insulated from this. See Window replacement for a comparison by frame material.

For projects that use little or no softwood lumber — bathroom remodels, flooring, painting, solar — this story has essentially no bearing on cost.

How we track this

Our cost estimates are built from labor hours multiplied by local rates, plus current materials pricing, then checked against market prices and real contractor quotes. When a materials input like lumber moves, we watch mill and wholesale pricing alongside quotes we're seeing on the ground, since NAHB's own reporting confirms retail and contractor pricing typically lags mill prices by weeks or months in either direction.

If you're currently getting quotes for a deck, fence, or cabinet job, it's worth asking your contractor when they last updated their materials pricing — a quote based on last month's lumber costs may not reflect this week's small dip, or the tariff picture, either way. Our "is my quote fair" tool can help you sanity-check a number against current typical costs for your project and region before you sign anything.

The bigger long-term factor to watch is whether the lower preliminary antidumping and countervailing duty rates NAHB reported become final, and whether the separate Section 232 tariff changes. Until then, the effective rate on Canadian softwood imports remains close to where it's been, and NAHB's own framework suggests any further price relief at the mill level will take time to reach retail and contractor pricing.