It had stagnated due to some bad decisions on the banks part such as making a 120% loan then trying to get that amount plus fees in the sale of a house full of rotting food with holes kicked in the walls.

Here is a summary found Online:Short-term Rentals Property TaxConcerning the property tax classification of property used for short-term rentals.SESSION: 2020 Regular SessionSUBJECT:Fiscal Policy & TaxesBILL SUMMARYFor purposes of the property tax, the bill classifies an improvement that is used to provide short-term stays, which is overnight lodging for less than 30 consecutive days in exchange for a monetary payment.

I've got most of the holes in my knowledge on the subject filled, but this seems to be the lynch pin in my plan to begin pursuing this type of strategy: I have no idea what type of company could do these successfully.

If this doesn't make a head spin either (a) your equally crushing it with your own "honey-hole" or (b) not cognizant of how epic a win that is today. 

The bathtub is not usable until this is fixed.I got another plumber to come in and he said he can cut some more of the subfloor and access the pipes, he wasn't too concerned about a bigger hole through the subfloor. the subfloor is already cut for about 10x10 inches, but that's too small an area for the plumber to reach the pipes. 

And if they have to drill holes for interior piers, you pretty much will have to replace the entire flooring. $$$$3.

I don't want to drill holes into the door, so the simpler the method the better.

As others have mentioned, they could play hardball with you instead and be total A-holes by just simply not paying you.

However, I guess if the units need complete rehabs anyway, it would be a bit underhanded to want to go back to the table for some holes in the walls.

Whole place got smoked, hole in the roof, car port damaged, etc.