Side jobs are few and far between in my line of work but I do currently options trade the spy index when I see the proper entry.

It looks like the ADU has not been properly zoned to be considered it's own unit, so according to the tax assessors report the property is a 3-bed SFH.

One of my properties (in Palm Bay, Florida) recently encountered a leak which apparently occurred because the AC unit may not have installed properly.

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

So, typically they stay put.You need to know the year of manufacture, is it a single wide or a double wide.

And is there any way to verify it has actually been done properly if and when we get there?

This year I went on a motorcycle trip 3000 miles off-road through Patagonia with a guide, a mechanic and a support vehicle, it was a proper adventure absolutely epic.

Its been great while working in the house with the rehab, however I am concerned with a Tennant taking advantage of this: smoking inside, not opening the windows while running it causing a backdraft from other appliances like the water heater which would cause it not able to vent to the outside properly, and I'm sure there are others. 

Just make sure the property is maintenanced properly. 

They can help you with the state and city regulations and understanding what it is you need to have done to your property to make sure it is licensed properly.