I went back to my county's site, and that definitely would not be possible. I doubt that that would be possible anywhere, because the owner would typically get

I went back to my county's site, and that definitely would not be possible. I doubt that that would be possible anywhere, because the owner would typically get a single tax bill for the entire parcel-of-record. Maybe there's a legal mechanism for carving off a piece of a larger property that you've been "openly and notoriously" squatting for the requisite amount of time. If so, you'd pay the tax bill post facto. But... I don't really know anything, let alone cross-jurisdictionally. Those are educated guesses.