Technically you don't own your "property value"; just your property. "Property value" is just someone else's willingness to pay, and you can't own someone else's opinions.
The value is inherent in the land; one must have the other; they are inseparable.
Quite the contrary. Economic value is purely subjective. If we all became franciscan friars tomorrow, diamonds would be valueless.
1) Ultimately, when he loses, he will (in a just society) be liable for all of your costs, including repair of any damage to your property, legal expenses, lost time, etc., with interest.
You're assuming he has the ability to 'make you whole' as it were. He may not have a pot to piss in, or he may do an OJ and hide any assets leaving you to eat your losses. Pre-emption would have prevented that.
That's a problem under the current system as well. If a dirt-poor man burns down your house, you get nothing but the satisfaction of seeing him tasered and jailed. That does indeed happen, but it isn't the fault of liberty.
A 'security agency' is a private entity. Under what authority would/could they employ force to stop him?
An agency hired by me is my agent (indeed, as the name implies). If I can shoot in self-defense, I can hire someone else to act as my agent, shooting in my defense. It's legal for him to shoot exactly when it's legal for me to shoot; and it's murder for him to shoot exactly when it's murder for me to shoot. So if the neighbor is threatening my life with his toxic smoke or whatever, I can
demand that he stop--and can use lethal force to
make him stop. My security agency can do the same, because they're simply doing, as my agents, what I have a right to do.
In a free society with privatized law, due process comes into the picture naturally. I can shoot in self-defense, but the neighbors might think I'm committing murder and return fire. Since I don't want a feud or a war, I have to take care that when I'm using deadly force in self-defense, others will realize that and not deal with me as if I were the aggressor. The security agency would therefore notify the neighbor's security agency before stepping on his property, to forestall him reporting them as trespassers and starting an incident between the two agencies. The neighbor's agency would demand some kind of evidence, or might simply send its
own people to check things out. In all likelihood, the man's own agency would either make him stop, or else inform him that they will not defend him when my agency comes to shut down his toxic smoke.
--Len.