Also - if under any circumstances the dog were to ever cause any damage, the tenant is STILL liable for those damages even if it is a service dog or not.

@Haley StephensUnder rare circumstances(I.E. rental treated like a hotel) would the cost segregation be reported on schedule C.Best of luck

Anything you would avoid or be cautious of because of an unforeseen circumstance?

But after I bought it, come to find out there was a new marshal who was easy to work with, and he agreed to sign off on it given some extenuating circumstances.

This is not a tenant/landlord circumstance so I'm not sure what my legal obligation is (looking into that now).   

Is it worth it to you to just pay a wholesaler their 10-$20k fee or do you want to spend months trying to learn something and focusing your time and effort into a new skillset while neglecting something you have proven experience in?

Given these circumstances, I'm thinking SFH LTRs due to lower time and effort input required from me (ideally). 

You never know what the future might hold, and you need to be ready to pivot in the event that an uncontrollable outside force like regulations change or you need to sell the property due to some unforeseen circumstance.

If my goal is to continue investing in real estate and consider refinancing when mortgage rates become lower, would Option 3 be the most suitable choice for my circumstances?

If a property is zoned residential, sometimes lenders will allow a borrower to finance it as a commercial loan under extenuating circumstances.