"We will move to other premises until all necessary remedial action has been taken. I apologise for the inconvenience to tenants, staff and customers of affected organisations. I congratulate my team for being so organised and effective."
The process is expected to take about three months.
The bank's currency, payments and settlements, and markets operations are not affected.
The decision comes after ongoing asbestos remediation was proving too complex and disruptive.
Until yesterday, ongoing air monitoring in the Reserve Bank building showed that the level of respirable asbestos fibres was below trace level, meaning that the building was safe for occupation.
The ground and basement levels will remain occupied and in use. The way that those levels were built is different than the office block above, meaning they are safe.
"We expect to move back into the building after three months, when building-wide remediation work is finished and safety tests have been completed and signed off by specialist asbestos firm Major Consulting Group," Orr said.
We are supporting tenants in the building as they make arrangements for temporary accommodation. They are the Parliamentary Commissioner for the Environment, Parliamentary Counsel Office, State Services Commission and NZ Defence Force.