Bid levelling

No two bids arrive on the same basis. Each carries its own exclusions and qualifications, its own reading of the ambiguities, its own assumptions where the documents were silent, and its own commercial terms behind the number on the form. Bid levelling is the evaluation discipline that reconstructs comparability: itemising every deviation from the tender basis, pricing each one's consequence, adjusting each bid to include what it excluded and remove what it added, and clarifying with bidders — in writing, through the formal channel — where intent is unclear.

The levelled comparison routinely reorders the raw one, which is the whole point: the lowest submitted number is frequently the bid that excluded the most, and the exclusions are not discounts — they are invoices deferred to the contract, where they will be priced without competition.

Levelling fails as arithmetic-only exercise: commercial adjustments made without technical review of what the deviations mean, or qualifications waved through as "to be resolved at award" — a phrase that means resolved at the winner's leisure. The levelling sheet, kept honestly, is also the project's first risk register: every line on it is an ambiguity the tender documents created, and the same list will reconvene at the first claim.