Inputs Up, Outputs Flat: The 490-Basis-Point Question
The Bureau of Labor Statistics (BLS) released May 2026 Producer Price Index data this week. For construction, two numbers define the month: nonresidential construction inputs rose 8.4 percent year-over-year, and nonresidential construction outputs rose 3.5 percent over the same period. The gap between those two figures is 490 basis points and has been widening for months. The input index tracks what contractors pay: materials, freight, equipment, and other goods consumed in the construction process. The output index tracks what contractors charge: the price of completed nonresidential construction delivered to owners. When inputs outpace outputs, the difference must land somewhere. It lands on margins. In May, nonresidential inputs rose 1.8 percent month-over-month. Nonresidential outputs rose 0.1 percent. The monthly spread is consistent with the annual one. This is not a one-month anomaly. It reflects a sustained period in which bid prices have not kept pace with cost escalatio...