What a Bill of Quantities actually is
A Bill of Quantities is a structured document that itemises and quantifies every element of work required to construct a building. It serves multiple purposes simultaneously: it is a tender document that allows contractors to price the same scope on a like-for-like basis, a contract document under certain procurement routes, a cost management tool during construction, and a basis for interim valuations and final accounts.
A properly prepared BOQ under NRM 2 is not a shopping list. It is a precisely measured, systematically structured description of every piece of work, organised by work sections, with quantities expressed in defined units of measurement. Each item has a description detailed enough that a contractor can apply a rate without ambiguity about what is included.
If you have ever received a BOQ where the descriptions are vague, the quantities do not reconcile with the drawings, or the work sections are incorrectly structured — you know the difference between a BOQ prepared by a competent QS and one assembled by someone who does not understand measurement rules.
