There is always that chance,but a more likely scenario would be a slight drop or a leveling off with no more increases for a while(which is not really a bad thing)--We would really need to know just what % of houses are bought by Chinese Investors,not living here.
If I were Chinese type policy maker(ie no real opposition) to help solve the housing problem in Aucland, I would be developing a passenger service on the existing RR tracks to Hamilton.(preferably good enough for a 45min-1hr commute)