At it's core a house is an inhabited building. I think an occupied outhouse might work even, if you stuck a much of them together with the vampire in the middle. I'm envisioning like a 3x3 porta potty cube with a vampire in the center one.
But yeah I think there would have to at least be a person in each one
Hey, I'm an amateur vampirologist. Feel free to tell me to go F myself if you disagree, but here are my thoughts.
In most media I've seen it's not the property line, it's specifically the house.
Subletting leads to an interesting conundrum that I'll have to explore more but on its face I think it checks out. I also think it's very silly and would love to see a work that explored this.
As I understand it, you'd have to build them pretty close together so it couldn't escape, especially if it can turn into mist or fly, but theoretically I think that would work too if you could build fast enough.
Listen I'm not saying it shouldn't be better. But I'd rather vote for a Musk funded Democrat than a Trumper. I would love to live in a reality where Citizens United never happened and money is banned from politics, but the way it stands I would vote for a literal steaming pile of horse shit if it was running against Trump and I'm not sorry about that.
Birds are reptiles