The method of measurement is not an administrative preference. It governs how a bill of quantities is structured, what each rate is deemed to include, and how varied work will later be valued. Selecting one that does not suit the contract or the geography introduces ambiguity that persists for the life of the project.
NRM2
The RICS New Rules of Measurement 2 provide detailed rules for building works and are widely used across the UK and the Middle East. NRM2 sits within a coherent suite covering order of cost estimating and cost planning, which makes reconciliation between cost plan and bill straightforward.
It suits building projects — residential, commercial and mixed-use — where a detailed, elementally structured bill is required.
POMI
The Principles of Measurement International is deliberately concise and internationally applicable. It is widely adopted across the GCC, particularly where the employer or a bespoke contract specifies it, and it copes well with international project teams working to differing national conventions.
Because POMI is less prescriptive than NRM2, preambles carry more weight. Where POMI is used, the preambles must be drafted with care.
CESMM4
The Civil Engineering Standard Method of Measurement, fourth edition, applies to civil and infrastructure works — roads, drainage, structures, earthworks and marine. Its item coding and treatment of temporary works reflect the realities of civil engineering, and it aligns naturally with re-measurement contracts.
How to choose
Three questions usually settle it:
- What does the contract require? If a method is specified, that ends the discussion.
- What type of work predominates? Building works point to NRM2 or POMI; civil works to CESMM4.
- Who is pricing it? A method unfamiliar to the likely tenderers attracts qualification and risk pricing.
Mixing methods within a single bill without clearly delineating which applies to which section is a common and avoidable error. Where a project genuinely requires both — a building with substantial external infrastructure, for instance — separate the packages and state the governing method in each.
Whichever method is adopted, state it explicitly in the preambles and apply it consistently. Most measurement disputes arise not from the choice itself but from inconsistent application of the choice made.
