How to compare contractor bids when exclusions differ

By AKTE · 16 September 2026

A lower contractor price is useful only when you understand what it covers. One submission may include fabrication, installation and testing. Another may exclude part of that work, assume it will be supplied by others or leave the scope unstated.

A useful bid comparison makes those differences visible before the team reaches a conclusion about value. Start with the issued requirements and the agreed evaluation basis, then record what each bidder actually submitted.

Establish the comparison basis

Identify the tender documents, issued revisions and addenda that define the work. Record which documents were available for the review and whether every bidder has responded to the same basis. An unanswered acknowledgement or a conflicting drawing reference belongs in the clarification record.

Break the scope into meaningful comparison areas. For a construction package, these might include major work elements, design responsibilities, temporary works, testing, access and handover. Choose headings that reflect the project rather than reusing an unrelated checklist unchanged.

Preserve the submitted figures

Show each bidder’s original total, currency and stated tax basis. Keep any later clarification or analytical adjustment separate, with its source and date. A revised figure should never silently replace the original submission.

If an exclusion has no reliable price, record the gap. Treating an unknown allowance as zero would make the comparison appear more complete than the evidence supports.

Distinguish exclusions from missing answers

An explicit exclusion is different from an item you could not find. For each material scope item, record the bidder’s statement and source reference. Use clear descriptions such as included, excluded, not stated, ambiguous or conflicting.

“Not stated” does not prove the bidder has excluded the work. It identifies a question for the clarification process. Equally, a general claim to include everything should be checked against specific qualifications elsewhere in the submission.

A synthetic example

In AKTE’s Stonepine Bridge Upgrade sample, Bidder A submits $8.14 million, Bidder B $7.66 million and Bidder C $8.92 million. Bidder B excludes structural steel fabrication. Its lower total therefore has not been verified on the same inclusion basis as the other bids.

The appropriate next step is to establish the missing scope and pricing through the project’s permitted clarification process. The sample retains the submitted figures and flags the unresolved comparison instead of inventing an allowance or declaring a winner.

Check program assumptions as well as price

Scope is only one source of difference. A shorter program may depend on access, approvals, information or resources that the project cannot yet provide. Record those dependencies alongside the stated duration so the decision team can see what must be confirmed.

Conclude the comparison with the material differences, supporting sources and open questions. Apply the agreed evaluation rules and preserve the client’s responsibility for the final assessment and selection.