Renovation Planning 9 min read BUILT FOR CONTRACTORS

How to Compare Contractor Bids: A Homeowner's Step-by-Step Guide

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Getting three bids is table stakes. Knowing how to compare them — including what to do when they're wildly different — is where most homeowners get tripped up.

⚡ Comparing Contractor Bids — The Quick Version

✓ Compare scope, not just price — different bids often include very different things
✓ The lowest bid is frequently the most expensive project when change orders are counted
✓ A 20–30% spread between bids on the same scope usually signals a scope difference, not a price difference
✓ Ask every contractor to use the same line-item format so you're comparing apples to apples
✓ License, insurance, and references matter as much as price — a bad contractor at 20% less is not a deal

The homeowner who collects three lump-sum bids and picks the lowest one is running a coin flip. The homeowner who defines scope in writing, requests line-item bids, verifies credentials for all three, understands why the bids differ, and negotiates based on substance — that person gets a well-executed project at a fair price far more reliably.

The extra two hours of process before you sign a contract is the highest-ROI time you’ll spend on your renovation.

Sources & Further Reading

Written by RemodelFin Editorial Team

RemodelFin's editorial team is comprised of former project managers, estimators, and business owners who have collectively managed over $50M in residential remodeling volume across the US.

RemodelFin Editorial · Pro Trade Content

Contractor Q&A

How many contractor bids should I get for a kitchen remodel?

Get a minimum of 3 bids for any project over $15,000. Three bids give you a meaningful price range and help you identify outliers — both suspiciously low bids and potentially overpriced ones. For projects over $50,000, consider getting 4–5 bids. Beyond 5, the incremental information diminishes and the bidding process becomes burdensome for quality contractors.

Why are contractor bids so different from each other?

Bid price differences usually come from three sources: (1) scope differences — one contractor included demolition and permits, another didn't; (2) material specification differences — one bid uses semi-custom cabinets, another uses stock; (3) actual labor cost differences between contractors. True apples-to-apples bids with identical scope and material specs typically show 10–20% spread. Spreads of 30–50%+ almost always indicate scope or material differences.

Should I always choose the lowest bid?

Not automatically. The lowest bid is often the most expensive project outcome when you account for: change orders for work the low bidder excluded from scope, quality issues requiring rework, contractor bankruptcy mid-project (common with underpriced bids), and schedule overruns. Choose the bid that offers the best combination of transparent scope, verified credentials, credible references, and competitive (not necessarily lowest) price.

What should a contractor bid include?

A complete contractor bid should include: itemized scope of work (what's included and explicitly what's not), material specifications (cabinet brand and line, countertop material and grade, appliance allowance), labor costs broken out by trade, permit fee estimate, payment schedule, project timeline with start and completion dates, warranty terms, and contractor license and insurance information.

Is it okay to share one contractor's bid with another?

It depends on the context. Using a competitor's bid to negotiate is generally accepted but should be done carefully — asking a contractor to 'beat' a lower bid often results in scope reduction rather than true cost reduction. Using specific line items from one bid to ask another contractor to clarify their pricing is completely appropriate. Sharing the full document without permission is less common practice and may damage the relationship.

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