People investing in Indianapolis have a far different strategy than people investing in SF. 

Do you know people doing this?

Justin made posts here about how much "he spent" rehabbing units that wound up belonging to other people. 

So I don't need to "ask people in Florida" about your theories. :)And you're entitled to your opinion. 

I find single ADUs are mostly being added by people with minimal RE investment experience often without a clue as to the value that will be added by the adu addition.  

So, many people in your area may not realize its negotiable and just assume its always handled a certain way.

A couple of years ago, I worked with an investor who never updated the contact information for the loan and the Bank call the seller (ex-wife), that day she was mad at her ex-husband and told the bank her ex allowed someone to steal their property from them and they got no money, she was kicked out of her house and there were strange people living there.This could all have been avoided if the investor did this process correct.Get educated, also I do not know your attorney but not many attorneys have the knowledge to do this process correctly. 

My immediate area, 5200 people, has 3 outdoor self storage and 1 new climate controlled.

I almost never get calls, most people send a message via Vrbo or Airbnb if needed, but it it much more common for them to just instant book with no questions.

People might be taking advantage of the rising prices.