Roncesvalles Avenue is a successful north-south main street in the west end of Toronto. I say successful, because it is truly a great street. It has transit, bike lanes, a fine-grained built form, and lots of interesting retail:

But it is somewhat unique in that a large section of it is a one-sided retail street. Meaning, it looks like this:

This obviously isn't a fatal flaw. It remains a wonderful street. And there are lots of examples of thriving one-sided retail streets. Ocean Drive in Miami Beach immediately comes to mind (notwithstanding the fact that locals tend not to go to it).

But conventional retail wisdom does dictate that two sides are better than one. Consider this 2023 report by Cushman & Wakefield ranking the top global main streets across the world. All of the streets that I have been to before are two-sided:

• 5th Avenue in New York between 49th and 60th (above 60th is, incidentally, when the street converts to single-sided because of Central Park)

• Montenapoleone in Milan

• The main street of Tsim Sha Tsui in Hong Kong

• New Bond Street in London

• Avenues des Champs-Élysées in Paris

• Grafton Street in in Dublin

• Passeig de Gracia in Barcelona

• Bloor Street in Toronto

These are all two-sided retail streets.

None of this is to say that the west side of Roncesvalles has nothing going on. It has a diverse mixture of uses, including churches, libraries, apartments, and many other things. But I think there is still an argument to be made that it has been hamstrung by restrictive zoning.

That said, Roncevalles is defined as a "major street" in Toronto's Official Plan and so it does fall under the city's new Major Street Study. Maybe that changes things.