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Three bids on your kitchen table, three formats, three totals. One is a two-page itemized document, one is a single paragraph with a number at the bottom, and one is somewhere in between. Comparing the totals directly is the mistake nearly everyone makes — it treats three different descriptions of the work as if they were the same job. They almost never are. We cover the reasons in why contractor bids vary so much; this guide is the fix.
The method below takes an evening. Against a five-figure decision that will occupy your house for months, it's the best-paid evening you'll spend all year.
The master scope list is the foundation of the whole comparison. It's a single list of every distinct piece of work your project involves — not as any one contractor describes it, but as the union of everything all three bids mention, plus anything you know about that none of them wrote down.
Go through each bid with a highlighter and pull out every task it names: demolition, debris disposal, permits, framing changes, electrical rough-in, new fixtures, plumbing relocation, drywall, tile, trim, paint, final cleanup. When bid two mentions something bid one doesn't — say, hauling away the old cabinets — that line goes on the master list. When you know the project needs something no bid mentions — a permit, a dumpster, protecting the floors in the hallway — that goes on the list too.
The order matters less than the completeness. When you're done, you have something none of the three contractors gave you: a neutral definition of the job. Every comparison from here on happens against that list, not against any bidder's version of it. If you want a sense of what a genuinely complete scope looks like trade by trade, see what a remodel bid should itemize.
Now make a simple grid: master scope lines down the side, one column per bid. For every line, each bid gets exactly one of four marks.
Included, fixed. The bid clearly covers this work at a firm price. This is the mark you want to see most.
Included as an allowance. The bid covers it, but the dollar figure is a placeholder that can move. Flag these; they get special treatment in the next step.
Excluded. The bid explicitly says it doesn't cover this — “painting by others,” “permit fees not included.” An honest exclusion is actually useful information. It tells you where the total ends and your additional spending begins.
Not mentioned. The bid simply says nothing. This is the most dangerous mark on the grid, because silence is not inclusion. Work that's missing from the bid, but necessary to the job, tends to come back mid-project as a change order — priced without competition, negotiated while your kitchen has no sink.
The first time homeowners fill in this grid, the reaction is nearly always the same: the cheap bid's column lights up with exclusions and silences. That's the moment the comparison starts telling the truth.
Allowances — placeholder figures for materials you haven't chosen yet — are where low bids hide their advantage. One bid's tile allowance may assume the cheapest ceramic made; another's may reflect what you actually plan to buy. Left as-is, they make the totals incomparable.
Two fixes, in order of preference. First: make your selections early, even preliminarily, and ask every bidder to re-quote those lines against the same actual products. Same tile, same faucet, same countertop slab — now the lines are directly comparable and the placeholders are gone. Second, if you truly can't select yet: pick one realistic figure per line yourself and mentally re-price every bid using your number instead of theirs. Either way, the bid that was winning on skinny allowances loses that advantage instantly. The mechanics of allowances deserve their own guide, and they have one: what allowances in a contractor bid really are.
While you're at it, do the same for the exclusions and silences: put a real dollar estimate on every line a bid doesn't cover, and add it to that bid's total. A bid that's cheaper by exactly the cost of the painting, permits, and disposal it omits was never cheaper.
This grid is exactly what the Bid Decoder's comparison workbook builds for you — enter up to three bids and every hole, mismatched allowance, and silent line lights up on one page, alongside the twenty questions to ask each bidder — The Bid Decoder Package ($29).
After normalization you'll have three adjusted totals that finally describe the same job. Often they've moved closer together; sometimes the ranking has flipped outright. But the adjusted number still isn't the whole decision, because you're not buying a number — you're choosing who controls your home for the next several months.
Insurance and workers' compensation are pass-fail, not a weighting. Ask every bidder for certificates of insurance — general liability and workers' comp — and verify them with the insurer, not just the contractor. A contractor without coverage isn't a discount; they're a transfer of risk onto your homeowner's policy and your savings. Rules on what happens when an uninsured worker is hurt on your property vary by state, and none of the versions are good for you.
Licensing, references, and track record are a weighting. A licensed contractor with years of similar projects and reachable references is worth a real premium over an unknown — commonly a meaningful percentage of the job, because their bid carries less risk of abandonment, defects, and disputes. Call the references, and ask each one the question that matters most: how did the contractor handle the thing that went wrong? Something always goes wrong; you're hiring for the response.
How they handled your scrutiny is data too. The bidder who welcomed the line-by-line questions and firmed up their allowances without friction just showed you what change-order conversations will feel like. The one who got defensive showed you the same thing.
Put it together and the decision usually simplifies itself. You have three adjusted totals for one identical scope. You've eliminated anyone who failed the insurance check. Among the survivors, you're paying the difference — if any remains — for reputation, responsiveness, and warranty strength, and now you can see exactly what that difference costs.
Sometimes the answer is the mid-priced bid whose paperwork was honest from the start. Sometimes it's the low bid, from a hungry, insured, well-referenced contractor whose numbers survived every question — that happens more often than the horror stories suggest, and we cover how to tell in is the lowest bid ever the right choice. What almost never survives the process is the bid that won only by leaving things out. Which is the point.
Yes — ideally before final numbers. Sending every bidder the same written scope and asking them to price exactly that list is the single cleanest way to get comparable bids. Professionals generally appreciate it; it protects them from disputes too.
A total-only bid can still be compared — ask them to confirm in writing, line by line, whether each item on your master list is included. If they won't do even that, you've learned how disagreements will be handled after you've signed, while they still had a reason to impress you. Weigh that heavily.
It helps, because the master scope list is built from the union of all bids — each one catches lines the others missed. But you can start the grid with two and add the third when it arrives. Just don't sign with the first bidder before the others come in; the comparison is where all your leverage lives.
Asking anyone to match a raw total is asking them to guess what the low bid left out. The fair — and more effective — move is line-specific: show that their price for a given item sits well above a competitor's and invite them to explain or sharpen it. Explanations are often legitimate; so are sharpened pencils.
The grid takes an evening by hand — or you can start from a workbook built from how remodel bids actually break down.
Get the Bid Decoder Package — $29 Instant download · Yours forever · All sales finalEducational information, not legal advice. Laws and practices vary by state and change over time; verify anything you intend to rely on, and consult a licensed professional in your state for advice about your specific situation.