Two large sites in central Auckland have been vacant for more than 20 years - and have become refuges for binge drinkers.
The former Royal International Hotel site next door to the Atrium on Elliott between Albert, Victoria and Elliott Sts, and the former Auckland Star site between Shortland and Fort Sts have been empty since the 1980s and are used as carparks.
Waitemata Local Board chairman Shale Chambers, said having the empty sites was "not optimal" and the mayoral taskforce had identified inner-city carparks as alcohol pre-loading points - where people go to binge drink before going on to licensed venues.
They were unstaffed and could be entered freely.
"It's not good. There are a lot of reasons vacant sites are not optimal," Mr Chambers said.