For instance, if a homeowner doesn’t have the ability to pay for a home, they also lack the funds for necessary maintenance.

no reason to retitle the property. although I think you have the right to do it in many instances. but why ? 

For instance, mileage from driving around to view properties for sale, educational expenses like books or seminars, expenses from networking events with other real estate professionals, etc.Hope that provides a helpful example. 

I would not purchase if net rent was 10% of purchase ($70k in this instance). 

I dont really know what a FLW house would bring a premium or not except his famous one I think its in WI house on a rock or something like that.

For instance, today, walking the project I noticed that we didn't address the washer values. 

For instance I'm not sure if my cash buyer will pay me the option fee before theres even a title search done.

Long term rentals have the least amount of interaction required, but short term rentals (AirBnB, etc) have higher profit margins - but require a lot more attention (some companies charge 30% for management and the daily turnover service, for instance).I would suggest you compare your potential rates of return from real estate with other investment vehicles.  

An in ground oil tank for instance can be a considerable liability. 

I’m gonna be frank, you will not quit your job buying rental properties, Brrr’s are incredibly hard to make work, for instance I bought a property at about 50% of arv which is crazy hard to find, I could probably pull all my money out but I’d stil be cash flow negative.