The only other thing is the siding, roof and and any absent or loose flashing. 

We would mutually to remove aunt A through quitclaim deed but also don’t want to put ourselves at risk for a tax reassessment.

Pieces of the roof are already loose and blowing in the wind again :/ 

FYI there are also products to remove stains to where you place it, leave it, and practically peel it off like school glue once it's ready to be removed.

Take existing material, repackage it and remove all the negative aspects, then do a hard sell over the web?

I am considering keeping my current personally owned home/farm and renting it as horse owner property. already completely set for 2-4 horses. my personal interest rate on the property is 2.6% and I don't want to loose it.

There are no large broken branches that we are neglecting.We would have to remove basically the entire tree in order to completely remove the risk of anything falling on them.

If you locked in a better interest rate when you bought the house then you might end up loosing it  and replacing it with the current higher interest which could cut into your cashflow. 

Pointed out downspouts not being long enough, flaking paint (minimal), windows that are older, provide furnace reports from HVAC tech, "remove sliding latch from bedroom door" to name a few. 

If something this simple and NON-panic is panicking you to loose sleep, your int he wrong business bud.