New Zealand has been in the news lately for sweeping housing legislation that effectively abolishes single-family zoning throughout most of Auckland, Hamilton, Tauranga, Wellington, and Christchurch.

But before I get into how this will all work, here's a bit of background from an article that Matt Gurney wrote talking about Toronto's inability to build affordable housing and create safe streets:

Now it’s time to segue back to the New Zealand thing, and there’s no particularly graceful way to do it, so I’ll just be blunt and inelegant: the federal government in New Zealand intervened on local housing rules because there was a crisis that local leaders were unable or unwilling to address. New Zealand has severe housing-affordability challenges (though Canada seems determined to close the gap). This has been a problem in New Zealand for years, and not enough was done, so the federal government stepped in... The government expects this to immediately spur construction of new housing units.

It is no doubt a top down approach. But we all know how difficult it is to build anything at all when you start from the other end.

So the way this new legislation will work is that it forces local councils to allow landowners to build up to 3 homes and 3 storeys on most lots. This is instead of 1 home per lot. The maximum site coverage has also been increased to 50%. And all of this will be available on an as-of-right basis, so no special permissions or variances needed.

The pitch is that this will unlock as many as 105,000 new homes in already built-up areas. This is, of course, a good thing for a whole host of reasons. It uses land and infrastructure more efficiently, it makes public transit more viable, and it increases housing supply in a highly constrained market.