Construction Input Costs Climb 11.2% in a Year
Contractors bidding fixed-price work should review escalation clauses as fuel and metal costs squeeze margins.
Updated on Nov. 2, 2026 in Construction
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Construction input prices rose 2.2% in September 2026 from August and 11.2% from September 2025, the largest annual increase in nearly four years. Nonresidential construction input prices rose 2.3% for the month, with higher fuel costs tied to the conflict in Iran accounting for a substantial share of the increase.
Why it matters
Fuel and tariffed metals are pushing up contractor input costs faster than many bids can absorb. Contractors with fixed-price contracts face squeezed margins, and more than 1 in 4 ABC contractors expect their profit margins to contract over the next six months.
Construction input prices rose 11.2% between September 2025 and September 2026, while crude petroleum prices climbed 28.3% over the same span. Nonresidential construction input prices rose 2.3% in September alone.
The players
Associated Builders and Contractors (ABC)
A national trade association representing merit-shop construction contractors and suppliers, which publishes analysis of construction input costs and industry confidence surveys.
U.S. Bureau of Labor Statistics
The federal statistical agency that produces the Producer Price Index used to track price changes for construction inputs across the U.S. economy.
The details
Construction input costs are built from energy, fuel, and metal materials, so a spike in crude oil and natural gas flows directly into hauling, equipment operation, and asphalt or concrete production. Tariffs on iron, copper, and other metal products add a second layer of cost that continues to climb. Because many contractors bid projects months before materials are purchased, they often cannot pass these increases through to owners in real time.
Timeline
September 2025 served as the baseline month for the annual price comparison.
September 2026 saw construction input prices rise 2.2% monthly and 11.2% annually.
On November 2, 2026, the Bureau of Labor Statistics released the Producer Price Index data that ABC analyzed.
Contractors expect profit margins to contract over the next six months.
Market Landscape
The 11.2% annual rise in construction input prices is the largest in nearly four years, according to ABC's analysis of BLS Producer Price Index data. The pressure is concentrated in energy and tariffed metals, which affect contractors across both nonresidential and residential segments.
Contractors should review fixed-price contracts and escalation clauses for upcoming bids and active jobs. Procurement teams should track metal and fuel costs closely, since margin pressure is expected to continue over the next six months.
The takeaway
Construction firms should calendar the next BLS Producer Price Index release and compare it against their own material purchase costs to measure margin erosion. Reviewing escalation clauses with qualified contract counsel is a practical step before the next round of bids.
Further reading
For broader context on how these cost pressures are shaping projects, explore the Construction section.
Source note: This article includes information reported by Glassmagazine.
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