We gave them a 60 day notice to vacate (required in Georgia for month to month) and then filed an eviction when they didn't pay.

Also, most title companies (in larger counties) will e-file...especially if they're on the hook for the gap period.

Creating an alternative LLC just for passive just adds expense as you have to file taxes for that entity, etc. 

Eventually the title company is likely going to file an interpleader action after deducting legal fees and expenses incurred in doing so from the deposit. 

Is it worth pursuing my landlord policy for the claims adjuster to go after their insurance or filing a lawsuit? 

Otherwise you will need their E&O information so you can file a claim and have this fixed. 

I don't know your state's laws but here in Georgia, for an abandoned vehicle there's stuff you file with the magistrate court and can acquire ownership.

I don't have a clue what that plastic or aluminum siding costs.Attached, are two files for breakdowns.

But you didn’t file tax yet for (2018), to show full your for it do you think that will be fine with the underwriter?

There need to be deadlines, agreements as to what happens if 'x' doesn't work out, etc., and hopefully an escape clause for the buyers in case a good condo comes up sold by people who actually intend to sell no matter what.Even if sellers agree to sell no matter what, there needs to be a deadline clearly specified for them to move out, it can't just be when they find a place.