I think the contrast is that the Conservatives have talked about addressing the supply side rather than the demand side. Pollievre has talked about "removing the gatekeepers" to allow more homes to be built.

I'm not sure if cities are actually making it hard to build more homes. But I would guess that from a city's perspective, you'd want to limit the rate of new homes being built so you can keep your land valuations as high as possible to maximize property tax revenue. But again, that's just a theory. And not sure the Conservatives could do anything about that anyway if it were the case