Ask to see the plan
Before designing, a good provider shows you which pages the site will have, what each does and how it'll be measured.
Ask what you get
Code, logins, speed measurements and documentation. If the answer is just “a nice site”, something is missing.
Be wary of ranking guarantees
Nobody can guarantee first place on Google or in an AI. What can be guaranteed is solid, verifiable technical work.
Ask what happens next
A site is alive: it needs updates and tweaks. Clarify support from the start.