Start with a neutral owner scope
Define roof areas, demolition, insulation, drainage, membrane or coating requirements, details, warranty, access, protection, and closeout expectations before comparing contractor proposals.
Normalize each proposal against the baseline
Mark included, excluded, alternate, substituted, allowance, unit-price, and unclear items. This separates true price differences from scope gaps.
Use the comparison to improve the purchase decision
Ownership can ask targeted questions, correct omissions, choose intentional alternates, and understand why one proposal costs more before selecting a contractor.
Practical owner checklist
- Create a neutral scope baseline.
- Normalize quantities, inclusions, exclusions, and alternates.
- Identify unresolved assumptions before award.
- Document the final accepted scope and deviations.
Frequently asked questions
Does scope review tell the owner which contractor to hire?
It provides structured evidence for the owner’s decision; contractor selection can also include qualifications, schedule, safety, references, and relationship factors.
Can the lowest proposal become the best proposal after normalization?
Yes, but only if it still provides the required scope and risk allocation after missing items are accounted for.