Bill of Quantities
A structured document that lists measured work items and quantities so pricing can be prepared and compared on a clearer basis.
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Glossary
Construction estimating glossary
Search plain-English definitions for the terms that shape estimates, tenders, BOQs, quote packs and QS-style reports.
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8 glossary terms
PC Sum
A prime cost sum is an allowance for an item the client is expected to select later, such as tiles, sanitaryware or appliances.
Read definitionProvisional Sum
An allowance for work that cannot be fully defined or measured when the quote is prepared.
Read definitionTender
A formal price submission for a defined scope of work, usually prepared from drawings, specifications and tender instructions.
Read definitionVariation
A change to the agreed scope, specification, timing or basis of the work that may affect price or programme.
Read definitionTakeoff
The process of extracting quantities, measurements or work items from drawings and project information.
Read definitionQuantity Surveyor
A construction cost professional who manages measurement, cost planning, tendering, valuation and commercial control.
Read definitionCost Plan
An organised estimate of expected project costs, usually prepared before full tender pricing is complete.
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