West Coast Sawmills in 2026: Capacity Cuts, Tariff Pressure, and a Region in Transition

The West Coast sawmill industry — stretching from British Columbia down through Washington, Oregon, and Northern California — is in the middle of a structural reset. Closures that once looked like cyclical responses to soft prices are now revealing themselves as something more permanent: a rationalization of an industry that has been losing fiber, capacity, and labor for years.

For 2026, the story is no longer just about how many board feet roll off the line. It's about which mills survive the next 18 months — and what the surviving footprint will look like.

British Columbia: the epicenter of the squeeze

British Columbia remains North America's most stressed sawmill region, and the pressures are stacking. BC's allowable annual cut has fallen by one-third over 20 years due to timberland setasides, Indigenous rights settlements, insect infestations, and wildfire losses. Harvest levels have dropped by approximately half, raising log costs and rendering many older sawmills economically unviable.

Wildfires have turned a slow squeeze into an acute one. British Columbia alone lost 1.4 million hectares of forest to wildfires in 2023, creating supply constraints that will affect production capacity for years to come.

The result has been a steady drumbeat of curtailments and closures. Major producers including West Fraser, Domtar, and Interfor announced additional facility closures and indefinite curtailments throughout late 2025, with more expected in early 2026. Canadian lumber production was down 6.9% in 2025, and further reductions look inevitable.

A new variable hit on January 1, 2026: Canada's industrial carbon tax jumped to $110 per tonne, up from $80 the year prior, a 37.5% increase that hits sawmills and treatment facilities directly on their operating costs. That cost falls especially hard on treated deck lumber, cedar, and pressure-treated posts — categories where Canada has historically supplied a large share of the US market.

The tariff hammer

Layered on top of fiber and energy costs are the US duties on Canadian softwood. As one BC operator put it in early January: "With winter now in full force and with the