Speculative real estate investment is a direct result of restrictive zoning. Consider for example an already developed area of a city that is zoned for single family residential. This makes it illegal for a developer to increase supply in this region by building, say a duplex. A developer is allowed to rebuild a house, but not increase supply.
So of course there is speculative investment! Owners have a legal guarantee of resource scarcity. It’s the reason governments everywhere try to avoid deflation; it causes everyone to hold onto their cash.
Now contrast the situation when a developer can turn a house into a duplex. Supply is elastic. There’s no legal guarantee of scarcity. Of course real estate is still an investment vehicle, but there is no longer the artificial constraint on supply.
I also think it’s weird to lump this in with environmental protection. Preserving natural areas is an unassailably important priority for any nation. What does that have to do with home owners that feel they have a legal right to not live next to a condo? I don’t think the parent (or really anyone here) is advocating we develop undeveloped land.
Finally, I wonder if this is all moot, because the issue at hand is a restriction of foreign ownwers. Won’t native NZ real estate companies be glad to step in to fill the void? Can’t these companies then just shell shares to international investors?