try spokeo.com and let us know how you did, I´ve used it only to get some phone number for abandoned houses, never for a list, but I think can work.

I contacted an owner of an abandoned house that was hit by a car some years ago.

I built a profile in PC years ago but abandoned it for being inferior to Mint at the time.

Check with the town/City to see if there are any zoning/rules regarding un-registered/abandoned vehicles on property.

It had been abandoned for 5 years. 

I am driving for dollars and stumbled upon a property that has been abandoned.

While they seemed to relish 'beating the system', I do believe that living that way  means abandoning most avenues of legal wealth accumulation.

So if you are dealing with homeowners, they may not be motivated at all if they know their home is never realistically going to auction.In my experience, most properties that actually go to tax sale are investor-owned and are either raw land or abandoned/dilapidated buildings.I don't want to discourage you. 

Call it, and see what happens.For example, I found a house in Downers Grove which has been abandoned long enough that DuPage County sold the 2014 taxes already - the 2015 taxes have not yet been paid (1st half).

I am interested in getting in touch with an Owner of a basically abandoned house in NC.