I like the rule lawyering, but the fuzzy conception of vampire law is that they require an invitation to enter a home, but nobody would expect an abandoned home to stop them, indicating a holistic rather than a technical definition. The state can repossess the home, but if the entire police force is vampires they’ll be unable to cross the threshold so long as those living there view it as a home.

For example, a worker drone that keeps a bed at their office and lives there part-time, it makes sense that a vampire could enter their office without invitation because it isn’t a home despite living there. However, alter the situation to an even sadder worker drone that lives full-time in their office and considers it to be their home, can the vampire enter? I posit nay, the vampire will need an invitation to enter their sad office home.