if a building sits empty for some period of time it should lose its listed status. like. if nobody even has a use for the thing it should not take up real estate indefinitely. i guess you don't want to just incentivize someone keeping a property empty so it can be torn down. but coupled with a sensible land value tax you could ensure that a building only ever remained vacant because truly no one has a use for it.
One of the only real downsides to a land value tax is that it would reduce the number of abandoned buildings I can break into



















