Cash lumber markets are sending a clear signal: supply constraints matter more right now than demand weakness. The Random Lengths framing lumber composite sits at $487/MBF, while Madison's Lumber Prices Index reached $545/MBF for the week ending July 3, up 5% from a month earlier. CME lumber futures traded at $654.52/MBF on July 24, up 6% over the past month, though still about 3% below year-ago levels.
Western Spruce-Pine-Fir (SPF) 2x4 #2&Btr held at $500/MBF through mid-July, flat week-on-week but 30% above where it traded two years ago ($384/MBF). Southern Yellow Pine (SYP) 2x4 East Side climbed to $557/MBF, 45% above its level from two years prior ($346/MBF), according to Madison's Lumber Reporter. The spread between the two species has narrowed as strong SYP demand meets constrained supply, while SYP still avoids the tariff burden embedded in Canadian SPF costs.
Supply is the story here. Fastmarkets reports that the North American lumber industry cut about 4.3 billion board feet of capacity across 2024-2025, after a brutal consolidation phase that followed the post-pandemic supply gluts. US mills had added 8 billion board feet of capacity since 2016, but the correction was severe. What remains is a rationalized supply base where small demand changes produce outsized price moves.
Canadian supply is even tighter. RBC data shows Canadian softwood lumber production fell roughly 26% between 2017 and 2024, with British Columbia production now at about half of 2017 levels. Canadian exports to the US have dropped 27% in volume terms over the same period. The combined US anti-dumping and countervailing duties of about 35.2%, plus the 10% Section 232 tariff imposed in October 2025, have made it unprofitable for many Canadian mills to maintain capacity. A builder analysis estimates the 14.54% softwood lumber duty alone adds $60-$70/MBF to landed Canadian SPF costs.
Demand is the counterweight. June housing starts jumped 19% month-on-month to 1.427 million SAAR, exceeding every analyst estimate. But the headline masks a structural problem for lumber demand: the surge was driven by a 76% rebound in multifamily construction, which uses far less lumber per unit. Single-family starts, the lumber-intensive segment, slipped 0.2% to 895,000 SAAR and fell 3.2% year-on-year.
Building permits tell an even more cautious story. Permits fell to 1.367 million SAAR in June, down 3% month-on-month and 2.3% year-on-year. Single-family permits dropped 2.4% to 871,000, the lowest since August 2025. Reuters reports that higher mortgage rates, elevated land costs, and a glut of unsold new homes are sidelining potential buyers. The National Association of Home Builders survey showed builder sentiment remains depressed in July.
TradingEconomics notes that sawmill capacity in North America is down about 6% year-on-year, and high borrowing and labor costs continue to dampen construction demand. The net effect is a market where structurally reduced supply meets tepid-but-not-crashing demand. Lumber prices are finding a floor above $500/MBF cash that would have seemed improbable two years ago, even as the housing cycle softens.
The substitution trend adds another layer. US lumber yards are increasingly substituting Southern Yellow Pine for tariff-burdened Canadian SPF where engineering and code allow. Fastmarkets reported in June 2026 that SYP is gaining market share as Canadian and European softwood imports dwindle. SYP is largely domestically produced and carries no import tariff, making it $60-$70/MBF cheaper than landed Canadian SPF.
Looking forward, the USMCA joint review scheduled for 2026 could include discussions about softwood lumber tariffs, but no near-term resolution appears likely. Canadian producers continue to pressure for removal, with British Columbia Premier David Eby arguing that cumulative duties have forced mills to curtail production or shut down. A Commerce Department review due in late 2025/early 2026 could adjust rates. For now, the tariff regime is a structural feature of the market, not a transitory one.
For buyers of framing lumber, the current market demands a strategy that accounts for two opposing forces. The bear case: single-family permits are falling, builder sentiment is depressed, and high mortgage rates are not going away. If the US economy softens further, lumber demand could drop sharply, and the supply constraints that are propping up prices may suddenly look less binding. On the bull side, mill capacity is structurally lower than it has been in a decade, Canadian supply is constrained by trade policy, and any uptick in single-family construction would quickly tighten an already balanced market. The recommendation: extend coverage for SPF through Q4 2026 at current levels ($490-$510/MBF cash), but keep optionality for SYP, which is available at a smaller premium than in recent quarters. If you are a large-volume buyer, consider splitting volume between SYP and SPF to reduce tariff exposure. Avoid spot purchases in August-September when summer maintenance shutdowns typically reduce mill availability. For construction buyers, the $60-$70/MBF tariff premium on Canadian SPF translates to roughly $1,000 in added cost per single-family home framing package. Factor this into your landed cost models when comparing domestic versus Canadian supply.