Any water flowing through pipes onto property would be being stolen from the US government too, stuff like that. No bridge maintainence if you declared an area of land that contains a bridge...
Do you have to edit your posts quite so much?
Okay, without committing to the idea that this should even happen in the first place, it seems obvious to me that, if the US DID recognize your suburban house as independent territory, it would have the right to cut off water supply in the absence of a water use treaty between your nations;
but you are most likely already paying a utility company for your water, so there's no reason why that contract couldn't continue to hold irrespective of the hypothetical flag on the hypothetical flagpole.
If you mean some other unrelated land, though... you can't seize land belonging to other people
anyway, regardless of whether you are declaring yourself a separate country or not, because those people have the right to self-determination too.
Well yeah, DI doesn't work like "I can shoot anyone and do what I like because foreign!", it can be revoked basically instantly for one. Which is why I had a question mark, "would it be extended automatically or require agreement with the government first?".
Well, people don't get diplomatic immunity "automatically" in the first place, there has to be some diplomatic agreement between the two countries, so...
And shooting tresspassers still gets police investigations to establish what happened and if there's any culpability, court cases, legal obligations to report. You can't just shoot someone, bury the body, then forget about it because they were "on your land".
Sounds like you live in a city.
I jest, but you can't just shoot, shovel, and shut-up tourists from another country either. And, like I said before, in practice, you are very unlikely to be able to execute any treaties with the 'host government' establishing an international court system, so the most likely outcome is that the government prosecutes in its own courts, and, if you refuse to extradite, invades your country (house) to forcibly arrest the fugitive. In other words, the same thing that happens if you're a citizen.
This is really central to my point: The whole thing is basically theater.
Plus in what sense is a nation without land a nation? What are you a nation over? What are you governing? How can you recognize soverignty of a nation when there's no land to be soverign of? There's a reason life has suuuucked historically for landless peoples after all.
This was historically a completely workable concept? Sovereignty doesn't relate to land in the first place. Governing is a matter of laws, not land. eg, historically, a sovereign was often sovereign over
people, and those people were subject to the sovereign's laws regardless of where they were. If you, a subject of the Whatever Crown, did a crime while on a trading trip to some other place, that would be between your sovereign and the other sovereign to work out - there are many cases where a king trying to punish the subject of another king was taken by the second king as an act of war. I'm not committing to this specific model, because it doesn't seem appropriate for the context, but I am using it as an example of why land and sovereignty have no necessary nexus.