The Government has spent $3.4 million on maintenance, security and rates for red zoned land in the last year.
Figures released to the Star show in the 2016/17 financial year, Land Information New Zealand had spent $1.1 million on maintenance, such as mowing, weeding, pest removal, arborists and removing rubbish in the residential red zone.
It spent a further $300,000 on maintenance of red zoned land on the Port Hills.
The red zone needs to be mowed monthly.
Linz also needs to do "treatment" to make sure the land is in a park-like state and easy to mow and maintain, which includes clearing vegetation and any remaining fences, laying topsoil and sowing grass. It cost $400,000 to do that in the more than 600ha residential red zone last year and $800,000 for the land on the Port Hills.