The answer
Here’s what actually matters.
A project price is only as reliable as the scope and assumptions behind it. The clean way to handle changes is to separate the original included work from newly discovered conditions or owner-requested changes, then price the difference before the work proceeds when reasonably possible.
What a useful price tells you
- what work and quantity it covers
- what products/allowances are assumed
- what is excluded
- what conditions are still unknown
What should trigger a change
- owner changes the requested result/product
- concealed site condition differs materially from the stated assumption
- required professional/permit scope changes after review
What a change should show
- reason
- added/removed work
- price or credit
- schedule impact
- approval record
Bottom line
The goal is not “no changes ever.” The goal is no surprise work and no mystery charges.