Councils sometimes wash their hands of this problem and say that QV is the culprit as they are the organisation that determines rateable value of properties.
However QV works on a mass appraisal system, and on their website warns that this may not give a true indication of the market value of an individual property. Property owners have only about six weeks to formally object to a new rating valuation, and often the implication on rates can be overlooked.
However, councils do have an ability to address this rating inequity by having a rates remission or postponement policy.
Kapiti Coast district has one such policy for farms that are within urban rating areas, which is aimed at encouraging farmers to refrain from subdividing.
Whangarei District Council has a policy for farms that have high land value due to their coastal location, and acknowledges that the rates levied would otherwise be a disincentive to the continued use of the land as a farm.
Federated Farmers encourages other councils to have similar policies. Rezoning may be great for the developers, but for farmers it can be a real rates headache. Make sure you let your regional policy advisor know if this is happening to you.