The building, designed by Claude Plummer-Jones, contains an exceptionally fine main banking space.

Built by day labour, the structure is of concrete, faced externally with Malmesbury stone for the rusticated base with sandstone for the levels above.

Inside, the ground floor contains the (former) banking hall and some ancillary office space.

The banking hall as a whole offers one of Wellington's finer interior architectural experiences.

[2] Media related to National Bank Building, Te Aro branch at Wikimedia Commons