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Contractor bid comparison guide

How to Compare Contractor Bids: 7 Things to Check Before You Choose

Learn how to compare contractor bids side by side—scope, exclusions, allowances, payment terms, timing, warranties, and hidden differences—before you choose.

Two contractor bids can look similar—and still be very different. It is tempting to put the proposals next to each other, look at the total price, and choose the lowest one. But the lowest number does not necessarily represent the same work.

One contractor may include demolition and cleanup while another excludes them. One may include permits. Another may leave them to you. Materials, allowances, payment schedules, warranties, and even the exact scope of the job can differ from bid to bid.

Before choosing, compare what is behind the price. The goal is not to make every proposal identical. It is to make the differences visible so you can decide which differences matter to you.

1. Compare the scope of work

Start by making sure every contractor is bidding on the same job. Look line by line at what each contractor says will be done. If one bid contains work that another does not mention, do not assume it is included. A missing item deserves a question.

2. Look carefully at exclusions

Exclusions can turn an inexpensive-looking bid into a much more expensive project. Watch for demolition, disposal, permits, preparation work, delivery, cleanup, repairs, finishing work, or other items that may be excluded from one proposal but included in another.

3. Compare allowances

An allowance is not the same as a fixed price. Two contractors may both include an allowance for flooring, fixtures, cabinets, or other materials—but at very different dollar amounts. A low allowance can make a bid look cheaper today and create additional cost later.

4. Compare payment terms

Do not compare only how much the project costs. Compare when the money is due. Look at the deposit, progress payments, milestones, and final-payment requirements. Two bids with the same total price can create very different financial commitments.

5. Compare schedules and timing

Check the estimated start date, completion time, and assumptions that affect the schedule. Ask what happens if materials are delayed or the scope changes.

6. Compare qualifications and warranties

Price is only one part of the decision. Consider what each contractor says about experience, licensing or insurance where applicable, references, warranties, and responsibility for correcting problems.

7. Put the differences side by side

Instead of reading one proposal, putting it away, and then reading another, organize the important terms in the same categories so you can see the differences at once. You may discover that the least expensive bid is not actually offering the same project. For a practical way to organize these differences, see Compare Contractor Bids with a Spreadsheet.

Five practical questions to ask before you sign

  1. What exactly is included—and excluded—from this price?
  2. Are the allowances realistic for the materials I actually want?
  3. When are payments due, and what work must be completed before each payment?
  4. What happens if the scope changes or unexpected work is discovered?
  5. What warranty is included, and who is responsible if something goes wrong after completion?

Make the differences easier to see

CompareMetric helps organize competing contractor or vendor bids side by side so you can compare more than the bottom-line price.

See CompareMetric