A Bill of Quantities (BoQ) is a detailed, itemized document commonly used in construction and works tenders that lists materials, labor, parts, and associated services along with their quantified measures. Prepared once project design and specifications are complete, the BoQ enables bidders to insert unit prices for each line item, which are then summed to derive the total bid price.
By presenting an identical set of items and quantities to all bidders, the BoQ ensures a fair and transparent comparison of competing offers. It also precisely defines the scope of work, helping to avoid misunderstandings and facilitating accurate cost estimation, evaluation, and contract management. BoQs are typically compiled by quantity surveyors or cost consultants using standardized measurement rules.
Often, during the contract administration phase, the BoQ becomes a foundation for valuing interim payments, agreed variations, and preparing final accounts.
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