A practical guide for homeowners — plus a free downloadable bid comparison template. Know what to look for, spot the red flags, and compare apples-to-apples before you sign anything.
You finally have three contractor bids in your inbox. One is $48,000. One is $62,000. One is $79,000. Same project, same house, same week — and the spread is more than 60%. Which one is right?
The honest answer: probably none of them, as written. Contractor bids look like they should be directly comparable, but they almost never are. Each contractor made different assumptions about scope, material grades, labor allocation, allowances, overhead, and risk. The dollar amounts on the bottom line are the output of those assumptions — not the input. To pick the right contractor you have to compare the assumptions, not the totals.
This guide walks you through the exact process, with a free template you can download and use today. By the end you'll know how to normalize three different bids into a real apples-to-apples comparison, which red flags should make you walk away, and how to choose the contractor who will actually deliver — not just the one who quoted the lowest sticker price.
Send every contractor the same written scope of work and the same plans or photos. Ask for itemized bids — not a single lump sum — broken into labor, materials, permits, disposal, and any allowances.
Lay the three bids side by side in the template. For each line item, mark whether all three included it, only some did, or it was left out. Add missing items back to the bids that excluded them at the median price of the other two.
Allowances hide huge cost swings. Check the dollar figure each contractor budgeted for tile, cabinets, fixtures, appliances, and countertops. A 'cheap' bid with a $2,000 cabinet allowance is more expensive than a 'high' bid with a $9,000 allowance once you actually pick cabinets.
Compare start dates, total duration, payment milestones, lien-waiver practices, license numbers, insurance certificates, and warranty length. A bid that's $3,000 higher but has a 2-year workmanship warranty and progress-based payments is usually the better deal.
Highlight any line that is more than 20% off the median. Ask each contractor to explain — in writing — their assumption for that line. Their answer (or non-answer) tells you whether the bid is real or a placeholder.
Once the scope is normalized, the bids will usually be much closer than they first appeared. Choose the contractor with the cleanest paperwork, references you actually called, and the schedule that matches your timeline — not the lowest sticker price.
Contractors scope projects differently. Before you can compare dollars, the five things below have to match across every bid.
Any one of these on its own is a conversation. Two or more, and you should keep looking.
A pre-built spreadsheet with every line item, allowance, schedule, and paperwork check covered in this guide. Open it in Excel, Google Sheets, or Numbers and start dropping in bids.
Run any contractor quote through our Fair Price Checker to see how it stacks up against typical market pricing in your ZIP — then let our AI contract review flag the risky clauses before you sign.
Three is the standard recommendation. One bid gives you no leverage and no benchmark; two often leaves you guessing which one is the outlier; three lets you see the realistic market range for your scope and spot bids that are unusually high or suspiciously low.
Bids vary because contractors assume different scopes, material grades, labor rates, overhead, and risk buffers. One contractor may include demo and disposal while another excludes it. One may quote builder-grade fixtures, another mid-grade. Apples-to-apples comparison requires normalizing the scope before comparing the totals.
Not always — but a bid that is more than 15-20% below the others usually means the contractor missed scope, plans to make it up in change orders, is desperate for work, or is underinsured. Ask them to walk you through their assumptions line-by-line before you assume it's a deal.
A written scope of work, itemized line items (labor, materials, permits, disposal), total price, payment schedule tied to milestones, start and substantial-completion dates, allowances for any undecided selections, exclusions, warranty terms, and proof of license and insurance.
You can share the scope of work to get apples-to-apples pricing, but sharing competing dollar amounts is considered bad form and can backfire — contractors may either match the low number and cut corners, or walk away. Focus the conversation on scope, inclusions, and timeline instead.