1. Observe and protect
Note the symptoms, limit further damage where it’s safe, and gather any relevant history on the system.
2. Evaluate the house and site
A proper diagnosis works through fixture behavior, pipe material, current pressure and drainage, venting, where the shutoffs are, access, and any prior repairs.
3. Define a written scope
Pin down preparation, protection, materials, access, permits, testing, cleanup, restoration, exclusions, and change-order terms.
4. Compare providers
Verify credentials, then compare the logic and boundaries behind each proposal — not just the number at the bottom.
5. Inspect closeout
Confirm testing was done, the site is cleaned up, documentation was handed over, and warranty and maintenance duties are clear.