In addition, owner loaned us $100,000 at 6% simple interest for one year to make major repairs (installed heat pumps, replaced boiler (for heating water only), replaced some siding and major roof repairs.)We were very clear with each other what we each wanted out of the deal.

A friend even suggested friends/family raise for the investment, but since I've never done anything to this scale, it seems like a lot to take on on my own.

However, if your focus is on appreciation, I wouldn't suggest the ADU route.

An agent from Columbus suggested I ask around, but I'm still learning about the RE agent rules.

Any suggestions? 

If it was built as a triplex or was legally converted and recorded and rental license is inactive it can be pretty simple to get an active license on the property - especially because it is RM-1 zoning. 

My suggestion is reach out to these businesses and get a hold of the shared access easement. 

It is more challenging to get mortgages on properties that are of lower values, which is why I am suggesting local smaller banks, who have a mandate to serve the local communities. 

Keep it simple and make those principle payments.

Whether it's insights on the pros and cons of furnished vs. unfurnished or suggestions on rental pricing, I'm eager to tap into your collective wisdom.Thank you immensely for being part of this decision-making process!