It just seems unlikely that every single state will require the actual owner of the LLC to be in public records. If that is the case, good luck finding the owne

It just seems unlikely that every single state will require the actual owner of the LLC to be in public records. If that is the case, good luck finding the owners. Ideally the slumlord will have a different registered agent (person in the relevant state who handles the LLC paperwork) for each LLC and the superintendent only deals with a lawyer. Again, different lawyer for each building/LLC. You can sue the LLC, but the only asset that'd own is the building itself. So, properly done, it seems that slumlords can get away with it. Of course, paying all these lawyers might be more expensive than being a decent landlord, it is probably a lot less work. I feel like I'm missing some practical uses of knowing the superintendent, local and out-of-state lawyer for each building (or building/LLC combo). I only skimmed the linked How To Research a Slumlord, although the results seems to be "render the LLC useless by suing the actual owner".