He flew a drone and saw that there was more roof work than I felt comfortable taking on, ontop of some code violations in one of the units and exposed knob and tube wiring in the attic space.  

My properties are based in Columbus so most of the area codes calling me are from there but it sounds like others are getting calls from other places.

Make sure you understand your code requirements.

However, I'm unsure which of these platforms supports specific search criteria such as non-paying tenants, code violations, absentee owners, vacancies, tax liens, deceased properties, probate, and inheritance.

Like anything with a low bar for entry you will have unethical people operating in that space but wether you are a wholesaler or a fix n flipper if you are an unethical person that’s says something about your character. 

When we purchased the property, we assumed the property was inspected by the town and therefore their heating and other fire requirements were up to code. 

Otherwise, you have to tear it all down and build a new home to current codes and elevations. 

A handy search bar in the upper right makes it easy to find previous discussions, blogs, podcasts, and other resources.

If you have had multiple people on, then the bar is set.

As far as the legality of sober living homes they have a good bit of protection at the federal level from local government discrimination since people in recovery from addiction are a protected class, however some cities and counties have occupancy laws and certain codes that conflict with the sober home model and oftentimes the neighbors are not keen on having one next to them.