Texas aggregate prices are moving, and the calendar is part of the story. A temporary federal import surcharge is scheduled to end July 24, while material costs are already climbing across the state. For estimators and project managers bidding work in DFW, Central Texas, and San Antonio, that combination is a risk you can price for right now. A bid written today that places material in the fall can straddle two cost regimes, and the gap comes straight out of your margin if you did not plan for it.
Most contractors watch diesel closely and materials loosely. This is a week to flip that.
Associated Builders and Contractors of Central Texas estimates aggregate construction cost escalation at roughly 8 percent under current conditions, and points to a temporary import surcharge scheduled to end July 24 as a factor that can push bids across two different cost regimes (Source: ABC Central Texas, 2026). That tracks with the labor and materials cost pressure flagged in the AGC 2026 construction outlook. In plain terms, the number you bid in early July may not be the number you pay in October.
The jobsite math makes it worse before it makes it better. Transportation already accounts for 30 to 70 percent of a contractor’s delivered cost of material, because aggregate is heavy and local haul distance drives the price (Source: Borrow Pit industry cost data, 2026). When the material line and the freight line both move the same direction, a load that pencils today can quietly erode margin by the time your crew places it.
“Bids extending into late 2026 and 2027 may straddle two tariff systems, exposing contractors to material price jumps mid-project.” Source: ABC Central Texas · 2026
What to do is not complicated, but it has a deadline. Lock material and haul pricing on active bids where a supplier will hold it. Write escalation language into any contract that runs past the third quarter so a mid-project cost jump is shared, not eaten. And get your delivered cost, material plus trucking, confirmed in writing before you sign, not quoted verbally and revised later.
The forward view is that cost certainty is becoming a competitive edge in Texas bidding. The contractor who knows the delivered number and holds it wins work the guessers lose on change orders. When you request a quote, material and haul come back as one figure, which removes the part of the estimate that surprises you.
Firm bids are only firm if the cost behind them is, so confirm the number before the calendar turns.