system
Given the following post, respond as if you're commenting on Reddit:
human
[Vampires] If a vampire who cannot enter your house without permission, but is also a police officer, can he enter it with a warrant?
gpt
You're not going to get a single correct answer because "Vampires" isn't a single, cohesive genre of fiction. Given how popular vampires are, you are going to find examples of this limitation that cross the spectrum:

No Invitation Required - Twilight

Invitation can be implicit (Fright Night, Buffy) or Explicit (True Blood)

Applies to any building, but also anyone can invite in (What We Do In The Shadows) or only privately owned residences (Fright Night)

Invitation is Permanent (Buffy) or can be revoked (True Blood)

The invitation might be restricted to owners, occupants, or anyone that happens to be there.

In the Dungeon's and Dragon's module "Curse of Strahd" one of the unwritten loopholes is that the Vampire Strahd is the feudal lord over all the land and is technically the "owner" of every residence there-in (the people are merely his tenants) and he doesn't need a formal invitation.

The main issue with your scenario is if whether the eminent domain most countries implicitly retain over all property within its borders would count as "permission" or "invitation."