1. Observe and protect
Note where the problem is visible, hold off on further damage if it's safe to do so, and pull together anything relevant from past repairs.
2. Evaluate the house and site
This step goes past the stained ceiling tile to ask what's actually feeding it — a roof issue, plumbing, condensation, or something else — because that answer changes the entire scope of work.
3. Define a written scope
Get specifics on prep, protection, materials, permits, testing, cleanup, restoration, exclusions, and how change orders get handled.
4. Compare providers
Look past the total price to how each provider explains their reasoning and where they've drawn the line on scope.
5. Inspect closeout
Before calling it done, confirm testing results, cleanup, paperwork, warranty terms, and anything you're expected to maintain afterward.