The former Christchurch Police Station will be brought down with an implosion.

Demolition has begun on the multi-level building, with Ngai Tahu confirming implosion as the method of choice.

A date is still being finalised, but it's likely to occur in the first few months of next year.

It'll be the second Christchurch building to be imploded post-quake, following demolition of the Newstalk ZB building in 2012.