Queenstown has always appealed to property owners and investors alike with lifestyle being supplemented by growth in property values. REINZ residential statistics show average price movement as follows:

And remember New Zealand has:
NO Capital Gains Tax
NO Stamp Duty
NO Land Tax
NO Estate or Death taxes
NO Wealth Tax
Given the anticipated growth in Queenstown popularity the laws of supply and demand support long term property value appreciation. It is also predicted that demand for rental properties will continue to be strong.