Purchased with 3 or 4 units rented ($525 for 2/1 and $425 for 1/1s) and the 4th unit requiring significant renovation (subfloor rotted) with no current renter.

So take the time to first use the odor removers, and let those dry.

We got off to a good start in late 2022 and then 2023 when the market took a downturn it dried up and we terminated at the end of 2023. 

When the next Covid world shutdown, or stock market crash, or China and the US stop Trade and there are shortages, or if the Panama canal goes dry in a year,  etc etc. 

Nothing happened to the floor, just pulled it up, dry with a fan and re-installed.

Remodeled a house before that had several animals as pets in the house (dogs and cats both) the animals were not let outside to use the bathroom (from what it looked like ever) we sanded down the hardwood filled a pump up sprayer with the odorxit (super contracted stuff mix as stated in bottle) sprayed all of the floors till they were soaked with it then opened the windows to let it all air dry.

But now my market has dried up and there’s only very expensive single family homes for sale that don’t work as rental properties because they have a negative monthly cash flow of starting at -$400 and getting worse from there.

You don't have to get the stump and roots "gone", they'll eventually rot away (maybe even in your lifetime)

I think the DSCR route would be my option due to high DRI. 

Resident went into crawl space and says it is dry and does not see mold.