The IRD headquarters in Wellington has been evacuated.
The Asteron building, at 55 Featherston St, is the latest Wellington building to be evacuated due to earthquake safety concerns.
A council spokeswoman said the evacuation was "precautionary" after engineers found damage in a stairwell.
"The damage might mean if there is another significant earthquake there would be no safe way to evacuate the building."
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According to architects Warren and Mahoney, the 17 storey centre is Wellington's largest single office building at 48,000 sqm.