So IMO what you are referring to is a difference between urban and suburban/rural. Where I live, properties are well separated, and multi-tenant apartments and

So IMO what you are referring to is a difference between urban and suburban/rural. Where I live, properties are well separated, and multi-tenant apartments and condos already have rules for things like this. As I'm sure you are aware, in an apartment or condo situation, you do not really own anything outside the drywall. I am speaking primarily about where I have the most knowledge: single family homes.