OP was talking about a 25year investment.
So look at FUTURE returns on investment for housing after the NEXT 25years , and compare that with shares / whatever.
I bought my house for 77K . Its now GV'ed 1Mil .
Is that relevant: NO .
It doesnt mean anything for what will happen in the next 25 years
There is no way my property will increase in value by such huge amounts again. No one would/could ever pay ridiculous prices .
I would think, given low NZ wages and high housing costs, we may have hit peak pricing long term .
Housing Prices cant go up beyond what people can actually pay, so the big increases may now be over .
Getting a big return/profit just from increase in value may not happen .