The Reserve Bank is vacating its Wellington building after new evidence of asbestos traces were detected in a lift.
In May the 14-storey building on the corner of The Terrace and Bowen St was closed and workers sent home after the asbestos was discovered.
The asbestos on level one had been remediated and results had been clear on all levels where air-quality testing had been completed - until yesterday.
"The final straw was yesterday when a trace amount of airborne asbestos was detected in one floor's lift foyer. The amount detected is low risk but the health and safety of all building occupants is our priority. The floor – level 6 - was vacated immediately," the bank said in a statement.
"As a responsible employer and landlord, the Reserve Bank has decided to close the building so we can address the issue comprehensively," Governor Adrian Orr said.