These kind of organizations make sense for apartment buildings, where you need to organize the upkeep of the overall building

Yeah this makes sense, but, in my country, this only applies to common areas of the building, and there’s civil law around what can/can not be agreed in assembly.

Are those HOS an assembly with equal voting rights? Or is there weight on shareholders votes based on amount of squares owned? Or something else completely? I’m genuinely interested if you can enlighten me. Or I can research it when I get more time.