The direct answer
To compare contractor bids, create one scope checklist and mark each item as included, excluded, allowed, owner supplied, or unanswered in every proposal. Then normalize allowance amounts, identify different product or quality assumptions, compare payment and change-order terms, and request written clarification for material gaps.
What to check in the documents
Scope alignment
Compare demolition, preparation, installation, finishing, protection, cleanup, permits, testing, and restoration by category.
Allowance normalization
Replace unlike allowance assumptions with a common selection budget or show the difference separately from the base bid.
Quality assumptions
Check product models, grades, installation methods, quantities, warranties, subcontractor scopes, and performance standards.
Responsibilities and exclusions
Identify owner purchases, design, engineering, permits, utilities, hazardous materials, access, storage, and work by others.
Commercial terms
Compare deposits, progress payments, retainage, schedule language, contractor fees, markup on changes, and dispute provisions.
Warning signs to clarify
- Choosing the lowest total before comparing scope
- One proposal has much smaller allowances
- Important answers are verbal rather than written
- Alternates are mixed into one bid but separated in another
- A contractor pressures the homeowner to sign before clarifications are incorporated
Questions to ask the contractor
- Did each contractor price the same drawings and scope?
- Which bid includes more complete preparation and finish work?
- How do allowances differ after using the same selection assumptions?
- What work does each contractor expect the owner to provide?
- Which payment and change-order terms create additional risk?
Practical context
Example: the lowest bid may carry the least complete scope
One contractor may include permits, debris removal, painting, and realistic finish allowances while another excludes those items. The second proposal can show a lower total without offering a lower price for the same work. A comparison worksheet makes that difference visible without assuming either contractor acted improperly.
This guide provides general construction-document information, not legal advice, engineering, inspection, appraisal, or a guarantee of final project cost. Project documents and applicable requirements vary.