A budget range helps a project conversation become more specific. It does not require you to know every cost in advance.
Connect money to priorities
Identify the results that matter most and the preferences that can remain flexible. Ask what information is needed before pricing can be meaningful.
Keep uncertainty visible
Existing conditions, selections and changes can affect scope. Record assumptions and ask how proposed changes would be reviewed.
Compare the same scope
When reviewing information, check what is included, excluded or still undecided. A number without a shared scope is difficult to compare.