Construction Materials Up 2.6% in May, Nearly 10% Year Over Year

Construction Executive covers the May 2026 construction input price report, which shows materials costs rising 2.6% in a single month and nearly 10% over the past year. The piece ties this to the broader employment picture, where the industry added jobs in May, and looks at which material categories are driving the increases. Estimators pricing work right now will find the data directly relevant to how they’re building contingencies and escalation clauses.

A 10% year-over-year run on materials is not a spike. It’s a new baseline, and anyone still using Q2 2025 unit costs in a budget being submitted this summer is already wrong before the first line item gets leveled. The bigger trap is the one-month number: 2.6% in May alone means the material you priced in a preliminary budget eight weeks ago has moved. Escalation language in subcontract agreements matters more than it did 18 months ago, and so does how quickly you’re turning proposals into awards. According to AGC construction data, input price volatility at this level has historically compressed margins most for GCs carrying fixed-price risk on long-duration scopes. If your sub agreements don’t have material escalation provisions, that’s the conversation to have before the next award, not after the first pay app dispute.

Keeping your subcontractor bid history organized matters more when prices are moving this fast. Comms Center logs every sub communication and bid received in one searchable record, so you can see exactly when a number was submitted and what’s changed since. That paper trail is your first line of defense when a sub calls to reprice. Learn more at commscenter.com.