Compare proposals for the same work. Ask what is included before comparing the headline total.
State the requested service
Distinguish assessment, cleaning, access restoration and referral or replacement work before comparing proposals.
Match the component list
Compare the same components, access limits and exclusions, including work assigned to another provider.
Record changes and completion
Ask how additional work is agreed and which findings, completion checks and unresolved items are documented.
Changes and exclusions
Confirm what is excluded, who approves additional work and when a revised total will be provided.
The handover
Ask which completion checks and documentation you receive and how to raise a question afterward.
Useful references
EPA · when to consider duct cleaning ↗General guidance. Confirm the scope for your property.