Lumber Price Index | Flume
Lumber Price Index
Price trends, forecasts, and market data for dimensional lumber, engineered wood products, and structural panels.
Lumber price trends
Historical pricing and 6-month forecast for lumber & engineered wood.
Price Trends & Forecast
This data represents predictive estimates based on market signals and historical trends. It is not financial advice. Flume makes no guarantees regarding accuracy and assumes no liability for decisions based on this data.
Updated Aug 3, 2026
Data source: Flume Price Index — historical price trends and 6-month forecasts for 20 construction material categories, normalized to a base index of 100.
Categories covered: Lumber & Engineered Wood.
The Flume Price Index is a predictive model that analyzes macroeconomic indicators, supply chain data, and market signals to forecast construction material price movements. Data is updated monthly. This is not financial advice. Visit tryflume.ai for methodology and full data.
Lumber scorecard
Current direction, confidence, year-over-year change, and volatility.
Construction Material Price Index
This data represents predictive estimates based on market signals and historical trends. It is not financial advice. Flume makes no guarantees regarding accuracy and assumes no liability for decisions based on this data.
Lumber & Engineered Wood
+10.2%
▲ Rising
+7.2% YoY⚠ volatile
3mo outlook
Updated Aug 3, 2026
Data source: Flume Price Index — price prediction scores across 20 building material categories including direction, confidence level, year-over-year change, volatility, and forecast horizon.
Categories covered: Lumber & Engineered Wood.
Understanding Lumber Prices in Construction
Lumber is the most volatile major construction material category, with prices capable of doubling or halving within a single year. The historic lumber price spike - when framing lumber briefly exceeded $1,700 per thousand board feet - demonstrated how quickly this market can move and how significantly it impacts project budgets. Framing lumber and structural panels typically represent 15-25% of material costs in wood-frame residential construction.
The market encompasses dimensional lumber (2x4s through 2x12s), structural panels (plywood and OSB), and engineered wood products (LVL, I-joists, glulam). Each product has distinct supply dynamics, but all share the fundamental constraint of forest resource availability and mill processing capacity.
Key Pricing Drivers
- Housing starts and building permits - the primary demand signal for structural lumber
- Canadian softwood lumber duties and trade dispute developments
- Sawmill capacity utilization and curtailment decisions by major producers
- Wildfire and beetle damage reducing accessible timber supply in western forests
- Transportation costs from mill regions (Pacific Northwest, Southeast, British Columbia) to markets
- Interest rate changes affecting residential construction demand trajectory
Lumber tariff & trade impact
How current tariffs and trade policy affect lumber pricing.
Tariff Impact
This data represents predictive estimates based on market signals and historical trends. It is not financial advice. Flume makes no guarantees regarding accuracy and assumes no liability for decisions based on this data.
Updated Aug 3, 2026
Data source: Flume Price Index — tariff rate trends and 3-month changes for construction materials by category, showing trade policy impact on building costs.
Categories covered: Lumber & Engineered Wood.
Supply Chain Context
U.S. lumber supply comes from domestic mills (primarily in the South and Pacific Northwest) and Canadian imports (primarily from British Columbia and eastern provinces). Canada supplies roughly 25-30% of U.S. lumber consumption, making the softwood lumber trade dispute a persistent pricing factor. Canadian duties can add roughly 8-15% to imported lumber costs.
Engineered wood products (LVL, I-joists, glulam) are manufactured by a smaller set of specialized producers including Weyerhaeuser, Boise Cascade, and Louisiana-Pacific. These products have more stable pricing than commodity lumber but face capacity constraints during demand surges. Lead times can extend from standard 1-2 weeks to 6-8 weeks during peak periods.
Lumber supply chain risk assessment
Current risk factors affecting lumber availability and lead times.
Supply Chain Risk
This data represents predictive estimates based on market signals and historical trends. It is not financial advice. Flume makes no guarantees regarding accuracy and assumes no liability for decisions based on this data.
Updated Aug 3, 2026
Data source: Flume Price Index — supply chain risk scores for construction material categories combining tariff exposure, freight pressure, and import dependency indicators.
Categories covered: Lumber & Engineered Wood.
Seasonal Patterns
Lumber prices follow a well-documented seasonal pattern: rising from January through May as builders stock up for construction season, then softening from mid-summer through fall as activity slows. This seasonal pattern is overlaid on longer-term trends driven by housing demand and supply capacity.
Year-over-year construction material price changes
How lumber price movements compare across all tracked building materials.
YoY Price Change Heatmap
This data represents predictive estimates based on market signals and historical trends. It is not financial advice. Flume makes no guarantees regarding accuracy and assumes no liability for decisions based on this data.
Year-over-year price change by category. Red = prices rising, green = prices falling.
| Category | Jul '25 | Aug '25 | Sep '25 | Oct '25 | Nov '25 | Dec '25 | Jan '26 | Feb '26 | Mar '26 | Apr '26 | May '26 | Jun '26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Appliances | +3.5% | +2.9% | +3.4% | +3.5% | +3.5% | +4.6% | +4.7% | +4.5% | +4.0% | +3.4% | +0.8% | +0.0% |
| Bathroom Fixtures & Vanities | +4.0% | +4.0% | +4.0% | +3.7% | +3.7% | +5.2% | +5.8% | +5.9% | +6.0% | +5.6% | +5.0% | +4.9% |
| Cabinets, Millwork & Panels | +1.9% | +1.7% | +1.8% | +1.7% | +1.3% | +1.7% | +1.8% | +1.5% | +1.7% | +1.8% | +1.4% | +3.7% |
| Concrete & Cement | +1.1% | +0.8% | +1.1% | +0.7% | -0.1% | +0.4% | -0.2% | +0.0% | 0.0% | +0.8% | +0.5% | +0.6% |
| Electrical Wire & Components | +8.4% | +9.5% | +8.7% | +10.4% | +11.7% | +15.7% | +17.7% | +17.8% | +13.8% | +9.2% | +13.9% | +14.4% |
| Flooring | +1.1% | +1.5% | +1.6% | +1.3% | +1.3% | +1.2% | +1.0% | +1.2% | +1.5% | +1.9% | +1.3% | +1.5% |
| HVAC Equipment | +4.2% | +3.5% | +3.5% | +4.6% | +5.1% | +5.1% | +5.2% | +5.7% | +6.7% | +5.4% | +4.3% | +3.2% |
| Hardware & Accessories | +7.1% | +7.1% | +7.5% | +7.4% | +7.4% | +7.8% | +8.0% | +6.9% | +6.5% | +6.5% | +4.9% | +3.4% |
| Insulation & Drywall | +0.9% | +1.0% | +0.4% | +0.0% | +0.0% | +0.1% | -0.2% | -0.6% | -0.8% | -0.5% | -0.4% | -0.1% |
| Interior Doors | +0.5% | +4.0% | +3.9% | +3.5% | +4.2% | +4.8% | +5.4% | +6.0% | +5.9% | +7.7% | +8.1% | +7.2% |
| Lighting Fixtures | +6.0% | +5.9% | +5.7% | +5.7% | +5.6% | +5.7% | +5.7% | +5.4% | +5.1% | +4.1% | +3.5% | +0.9% |
| Lumber & Engineered Wood | +4.0% | +3.6% | -0.7% | -2.3% | -3.5% | -3.9% | -0.5% | -0.6% | -3.4% | +2.5% | +5.3% | +7.1% |
| Paint & Coatings | +1.0% | +3.0% | +2.9% | +3.1% | +3.1% | +3.6% | +3.6% | +4.6% | +4.7% | +5.4% | +6.2% | +6.2% |
| Plumbing & Piping | -16.6% | -16.8% | -16.4% | -9.5% | -9.5% | -10.1% | -9.8% | -2.9% | +13.3% | +13.2% | +15.9% | +16.8% |
| Roofing | +1.2% | +1.9% | +0.9% | -0.1% | +0.7% | +0.3% | -0.6% | +0.5% | -0.2% | +0.4% | -0.4% | +1.1% |
| Steel & Metal Framing | +3.1% | +6.9% | +8.8% | +8.2% | +6.1% | +14.7% | +16.9% | +18.2% | +16.3% | +14.4% | +8.8% | +16.5% |
| Stone & Countertops | +2.8% | +2.8% | +3.7% | +2.9% | +2.7% | +3.4% | +5.6% | +5.4% | +5.7% | +5.7% | +5.9% | +5.9% |
| Tiles & Stone | +0.7% | +3.0% | +1.8% | +1.2% | -0.8% | +1.5% | +0.1% | +1.2% | +0.2% | +0.8% | +0.7% | +0.6% |
| Windows | +5.6% | +8.3% | +8.7% | +8.4% | +9.8% | +10.4% | +9.6% | +9.9% | +9.0% | +9.2% | +9.4% | +8.8% |
Updated Aug 3, 2026
Data source: Flume Price Index — year-over-year price change heatmap across 20 construction material categories by month, showing price acceleration and deceleration patterns.
Categories covered: 20 building material categories.
Frequently asked questions
Why is lumber so much more volatile than other building materials?
Lumber is a biological commodity with inelastic short-term supply (you cannot quickly grow more trees or build new mills). Demand is concentrated in housing, which is highly interest rate sensitive. This combination of rigid supply and cyclical demand creates extreme price volatility.
How do Canadian softwood lumber duties affect U.S. prices?
Canada supplies roughly 30% of U.S. lumber. Combined duties of roughly 8-15% on Canadian imports effectively raise the floor price for all lumber sold in the U.S. Changes in duty rates - which are periodically reviewed - can move the market by 5-10% within weeks of announcement.
Are engineered wood products a more stable alternative?
Engineered wood products (LVL, I-joists) have lower price volatility than commodity lumber because their value-added manufacturing smooths out raw material swings. However, they are not immune to cost increases, and lead time spikes during demand surges can be more disruptive than dimensional lumber shortages.