Here is an interesting chart (source) showing housing starts in Canada, by type, between 2000 and 2023:

As recent as 2000, single-family houses accounted for 61% of total starts and multi-family housing accounted for 39%. This flipped somewhere around the financial crisis and, last year in 2023, the percentages were 23% and 77%, respectively. This is a meaningful inversion which has helped our cities become more vibrant and more conducive to non-car modes of transport.

But in this recent article about Canadian housing, Donald Wright more or less argues: so what? We've been densifying our cities for all these years, but it hasn't helped our affordability problem. Supply must not be the answer to our housing crisis.

I'm not exactly sure what he believes to be the solution, but I don't think this problem is as simple as "we've built some housing, we made our cities denser, and yet housing is still expensive -- more supply must not be the answer. Let's move on."

Among many other things, it's important to understand what kind of density we've been building. Because up until very recently, we've basically taken the position that single-family neighborhoods should never be touched, and that density should only go in very specific areas -- and only after a lengthy and expensive rezoning process has been completed.

We've designed new housing to be expensive.

But attitudes are changing all across North America. We are now starting to do two very important things: (1) we are opening up more of our cities to intensification and (2) we are now allowing more multi-family housing on an as-of-right basis. Meaning, no lengthy rezoning exercises and no risk of community opposition.

These are two fundamental changes that should alter the kind of density that gets built. And in my view, it's going to be a positive thing for Canadian cities.