- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 05 Jul 2019
Abnormal costs in construction
The New Rules of Measurement (NRM) are published by the Royal Institute of Chartered Surveyors (RICS). They provide a standard set of measurement rules for estimating, cost planning, procurement and whole-life costing for construction projects.
According to NRM3: Order of cost estimating and cost planning for building maintenance works, the term ‘abnormal costs’ means:
‘…costs other than those typically encountered for the project funding route, including costs accruing due to circumstances outside the project manager’s control. Examples of abnormal costs include those arising from issues such as: access constraints, legacy data issues, unforeseen events due to the nature of the assessment of works, statutory bodies and listed buildings.’
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