alt Hacker NewsRiverdale [1] is a neighbourhood in Toronto with the kind of higher-density mixed single-family and multi-family homes as well as a few small apartment buildings (but no large apartment buildings) that I had in mind with what I described above. It also happens to be one of the most expensive neighbourhoods in the city which I take as an indication of high demand for the houses there.
Compare that with the sprawl of Vaughan also shown in the video [1].
The houses in Riverdale are way too close together. It looks like some of those people could literally open their window and reach into their neighbor's house!