What is a Bill of Quantities (BOQ)?

A Bill of Quantities (BOQ) is a detailed document used in construction projects that lists all the materials, labour, and work items required to complete a project, along with their measured quantities. Prepared by a quantity surveyor, the BOQ provides a clear and standardised breakdown of every part of the work—allowing contractors to price the project accurately and transparently.

A BOQ helps ensure consistency when comparing tenders, reduces the risk of cost disputes, and supports budget control throughout construction. In short, it’s the pricing backbone of a project, turning drawings and specifications into measurable, costable items.