Single family detached housing is the most common form of home in New Zealand. At one time, such homes were affordable on Waiheke. Now even homes as plain as this one are beyond the reach of the average Kiwi, and as homes they are banal to the max.
It is unlikely that detached, single family dwellings can be built for affordable prices. The land costs are too high and the infrastructure costs have to be exclusively carried by one owner.