UK measurement standard for office area excluding common areas.
Measurement · UK
UK measurement standard for office area excluding common areas.
Defined under the RICS Code of Measuring Practice. The basis for most quoted UK office rents. Gradually being supplemented by IPMS 3 - Office.
Net Internal Area (NIA UK) is part of the measurement vocabulary that institutional Class A occupiers, landlords, and advisers use across UK markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks the UK definition alongside the global standard so cross-border occupiers can translate quickly.