Montreal has rent control. The result is that its financially inadvisable to renovate. Part of the rent control is you can raise the rent $31/year per $1,000 of renovation. That's a 30 YEAR payback. You can be replacing a roof the second time before you've recovered the costs for the first time, even forgetting about inflation and opportunity costs.
Other provisions of the rent controls are just as restrictive.
The result is rental buildings here are in poor shape, as owners let their buildings degrade and then sell them. Few are being built.
Well ... there are more rental voters than landlord voters.