Outside of Apartments and gated communities, they’re more rare up in Canada. You don’t see them spring up in a random neighbourhood, it’s invariably in high-density projects that require communal elements that are normally separate that they can be found.

And then they’re called Stratas, and have no significant power beyond those communal elements. Like, an apartment strata can ban live Christmas trees if there have been too many needles dropped in the hallways, but otherwise cannot prevent you from building a particle accelerator in your living room unless other residents start complaining about the high levels of radiation and fluctuating power levels as capacitors charge (oops).