I don't pretend to know how to fix NZ's housing problem. But I know NZ society is in an uncomfortable position, of haves and have nots. The young often can't buy homes without parents gifting a deposit of tens of thousands.
I accidently came across the video talking about Singapore, and how they solved their housing problems.
"Public housing is often considered low in quality and high in crime, but it's a totally different story in Singapore.
Government built apartments in Singapore are clean, safe and well-maintained, and about 80% of Singapore residents live in them.
Singapore is also one of the few countries in the world to change almost full home ownership status (# 2 in the world at 90.9%) But it wasn't always this way..."
How Singapore Fixed Its Housing Problem