You're going to have a hard time billing the tenants without proof.

When we have proof from them that they moved out - the text they sent - we do not proceed with eviction as it would be a waste of money.

Build 2 or 3, get them running, collect some cash-flow, and see how the business goes.

If you catch these at the pre-foreclosure stage as slow pays or initially in default all the better as the bank has less in collection expense.You can still work out a discount but even buying at the payoff it can be profitable depending on the property value.You can practically force a lender to sell as it can fully indemnify them as a full payoff as demanded, continuing with a foreclosure becomes a rather vengeful act by the bank to punish a borrower, they don't want to go there.

That simply confirmed “proof of concept”.

I have a C-Corp (no assets) as the Prop Manager  to manage leasing and rental collection for all 4 LTRs.

Simultaneously, develop a detailed scope of work and collect bids from multiple contractors to compare costs and timelines.

If you choose not to show up, he would almost certainly be awarded a judgement.Of course, you could choose not to pay the judgement, but then he can send it to a collections agency and your credit score will be trashed.I don't see a scenario here where you get through this cleanly.  

Sometimes maybe often times they aren't doing enough to track down the owner or owner's heirs and just collecting checks from the court.

The goal is to make money, collect profits, NOT collecting properties.