NAHB: Building Material Costs Climb 6.7%, Squeezing Small Builders
Building material costs are climbing again, and the National Association of Home Builders says the pain is landing hardest on the small builders least equipped to absorb it. NAHB reports a 6.7% year-over-year increase in materials, driven by lumber, steel, and a stubborn tariff overhang. For factory-built categories, the story is more nuanced.
What NAHB's Data Actually Shows
The National Association of Home Builders is reporting building-material inputs up 6.7% year-over-year, per its analysis of Bureau of Labor Statistics producer-price data. HousingWire covers the release, and NAHB is clear about where the pressure is coming from — lumber prices remain elevated versus their 2024 lows, steel is being pushed by tariff activity, and specialty categories including gypsum, insulation, and copper components are all trending up. The compound effect is what NAHB calls a "quiet squeeze" on gross margin.
The pain is asymmetric. Large national builders lock in annual supply agreements and negotiate rebate structures that soften input volatility. Small regional and custom builders, who make up the majority of the industry by count, buy at retail or near-retail. When material costs move 6% in a year, the small builder eats the movement — often after the contract with the buyer is already signed.
Why Factory-Built Categories Behave Differently
Modular, manufactured, and prefab builders operate closer to the national-builder side of the procurement curve than to the small-custom side. Factory-based production means centralized purchasing, standing supplier relationships, and the ability to buy raw inputs in truckload volumes rather than pallet volumes. That doesn't insulate a factory-built home from material inflation entirely, but it dampens the swing meaningfully.
Buyers comparing a stick-built quote to a factory-built quote right now are looking at two different exposure profiles to input inflation. Buyers who want to understand how those quotes are constructed can explore PERCH's buying guides for a breakdown of what's included in each category's typical price.
The PERCH Read
We see this NAHB release as a leading indicator that will move buyer behavior over the next two quarters. When a stick-built quote comes in 6% higher than the number that closed the same floor plan a year ago, buyers start asking whether factory-built is the more predictable path. Factory-based builders in the PERCH network are positioned to answer that question with real numbers — buyers can Ask Wren to compare quotes across categories with someone who knows how the inputs are actually priced.
Frequently asked
Which materials are driving the 6.7% increase?
NAHB points to lumber, steel, and specialty inputs (gypsum, insulation, copper) as the primary drivers, with tariff activity keeping steel prices elevated.
Why do small builders feel this more than national builders?
National builders lock in annual supply agreements and buy in bulk with rebates. Small builders buy at retail or near-retail and absorb price movement directly.
Are factory-built homes affected by the same material inflation?
Yes, but less. Factory-based builders buy raw inputs in higher volumes and hold standing supplier relationships, which dampens the swing compared to small custom builders.