He told me after the sale that he did not know the house had been torn down and that there was a NEW $17,000 demolition lien on the property that transferred to the new owner, him.At another sale several bidders were bidding on a house that had burn down (maybe by the owner) a few days before the tax sale. 

It makes me wonder how investors will respond when seeing people getting burned in C/D-class.

Your comment does bias me slightly in favor of Indy, since at least we're talking about a manageable car ride.That said, I'd love to know the biggest mistakes you've seen - how do neophytes typically "crash and burn?"

He was burned out.The Problem is two fold:Cash Flow on Paper ≠ Real Cash FlowMany investors assume rental income will flow smoothly, but that’s rarely the case in high-risk areas.

I will submeter the electric and water (no gas) to the ADU.Or do I see if I could get a discount on the impact fees(prob fat chance) and get permitted in 2019?

I have been burned in Charleston Co SC and Folly Beach SC by changes in the STR laws after purchasing so obviously I’m very nervous to have this happen again.

Worst case all USA would have to do is hold out and hold the line as they burn there economies to ashes, to then in end agree to everything the USA is requiring. 

I'm confident if the Bomberos were not already on site the entire campo including our property would have burned down. 

The idea of purposely burning down the home came to me.

You will burn yourself out feeding the beast each month.