07/09/2026
Fixed price contracts still move. What tells you how much is the percentage sitting in PC and PS items.
Those are the things the builder couldn't price when they quoted you, because they didn't have the information yet. Every one of them is a number you find out later, at whatever it costs then.
Under 10 percent and you're in reasonable territory, and that's on a project with real unknowns in it. We've seen 30 and 40 percent, which means most of the contract is an estimate wearing a fixed price label.
The builder is the ones who know exactly what your house costs to build.