A useful worksheet separates the base scope, known additional work, allowances, optional choices, and excluded responsibilities. It makes differences visible without pretending that a rough planning total is a confirmed contractor price.
What to do next
Use the same categories for each proposal and note unresolved questions beside the relevant item. Add access and operating assumptions. Review the completed comparison with the contractor before committing so the budget reflects the building rather than a generic roof example.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.