Historic but not officially.

Want to make sure I don't miss anything that may be a problem later on when I officially close on the property.

House hacking "requires" (there's no official rule book lol) you to actively live in the property while renting part of it out.

My town they made me meet with the local code official supervisor (head) for about 30 mins and I came with a genuinely apologetic attitude and asked what they needed from me.

No matter how wrong it is, I have been seeing lenders use the zestimate as the value of your house for a HELOC without getting an official appraisal. 

Cool and Pioneer), but wanted to see what the price would be going thru an official outlet.

I don't believe anything is official yet, but there is definitely a push for 30 day minimum rentals.

Just in case she changes her mind, I would give her a notice of non-renewal to make it official.

It reads:If we're talking about a house that has 2 floors, but is not officially a duplex, would I be permitted to rent out (long term) the downstairs as long as I keep some portion of the house (like the upstairs, or even just 1 room) exclusively for myself and reside there for at least some portion of the year?

Contact your elected officials and let your position be known.2.