@Kash Tacke I'm a big fan of ADU's in general especially here in the mid west, yes you could potentially be on the front of the wave, but housing density is the solution to the affordability issue, anytime you are investing with affordability in mind is a great strategy to me, and sound like there are some incentives or at least supporting winds form the local city, that in itself seems like it would be worth at least approaching an architect or contractor to bid up some plans or concepts to take tot he city.  

Basically common contract or agreement law.

Hiring a contractor to assist with repairs and a property management company to manage rental.

Property management is not for the faint of heart, so glad to see you're enjoying it and thriving.

---FYI: licensed contractors in our area charge $95-$125/hour.

One place that will soon become a rental market heaven is an area around Johnstown/ New Albany where a huge Intel plant is under construction with plans for thousands of employees, not to mention the contractors there now. 

Expect a custom ADU to take 9–18 months, with 3–6 months for design and permitting and 6–12 months for construction, depending on complexity and contractor availability, and the speed of processing permits.

An experienced agent will list your property with the language, "no showings until an accepted offer", to avoid violating your tenant's rights to the peaceful enjoyment of their home - possibly resulting in their lack of cooperations and a lawsuit against you.

While we faced minor delays with contractor scheduling, strong project management minimized impact.

Here’s my two cents:Paying off the condo might make sense if your main goal is to reduce risk and enjoy the peace of mind that comes with no mortgage.