How do I compare contractor bids fairly?

Compare scope, not just price. Look for: written scope, organized breakdown, materials by brand or grade, permit responsibility, warranty terms, payment schedule, timing expectations, and insurance documentation. Missing items are worth clarifying before signing.

Should I go with the lowest bid?

No. A bid much lower than the others usually means cut scope, cheaper materials, skipped permits, or planned change orders. The lowest bid with the vaguest scope can often become the most expensive job.

How to compare contractor bids

A practical checklist for comparing scope, pricing, materials, and communication before you hire.

Updated April 2026

Get at least 3 bids

Three bids give you a reliable range. Two is not enough to spot an outlier. More than four may become harder to compare unless the scopes are very organized. Describe the same scope to all three and ask for written bids.

15 items to look for in a contractor bid

#	Item	Why it matters
1	Written scope of work	Defines what is included and what is not
2	Itemized price breakdown	Shows where money goes, not a lump sum
3	Permits included	Who pulls and who pays
4	Materials by brand and grade	The difference between $3/sqft and $12/sqft tile
5	License number on contract	Verifiable and may help reduce risk
6	Insurance certificate provided	GL + WC — ask for a copy, not just a claim
7	Warranty terms in writing	Written terms are easier to reference later
8	Change order process defined	How extras are priced and approved
9	Payment schedule	Be cautious with large upfront payments. Deposit rules and common practices vary by state, project type, and materials. Consider asking about milestone-based payments
10	Start and end dates	Clear timing expectations help reduce schedule confusion
11	Who does the work	Owner, employees, or subcontractors
12	Lien waiver at final payment	May help reduce risk from unpaid subcontractor issues
13	Final walkthrough before last payment	Helps document punch-list items before project closeout
14	Cleanup and debris removal	Broom clean should be in writing
15	Protection of existing finishes	How floors, walls, fixtures, and furniture will be protected

Scoring your bids

13-15 items = more complete bid package. 10-12 = ask about the gaps. 6-9 = several items need clarification. Under 6 = pause and compare carefully before moving forward.

Red flags

A bid 20%+ below the others — ask why, do not celebrate. No written contract. Requesting a large upfront payment without a clear explanation or milestone structure. Cannot provide insurance certificate. No physical address. Pressuring you to decide today.

Review your agreement's payment terms. Consider completing the walkthrough, documenting punch-list items, checking permit/inspection status where applicable, and confirming any agreed closeout documents before releasing the final payment.

Use the free Bid Comparison tool — 3-bid visual comparison with scope checklist →

Based on national trade data and contractor experience. Updated April 2026. This content is for general homeowner education only. It is not legal, financial, insurance, construction, code, licensing, or professional advice. Bid requirements, deposits, permits, lien waivers, insurance documentation, and payment practices vary by state, city, project type, contract terms, and local rules. Verify requirements with official sources and consult the appropriate qualified professional before acting. All ranges are for planning purposes only — not a quote or guarantee. Actual costs vary by region, scope, access, materials, and contractor.