It doesn't sound like you have a solid footing to get out of this deal unless a mutual arrangement is agreed to.

Unfortunately, it's a seller's market right now.I have seen some really outlandish demands, such as "Sold as-is, no contingencies, sight unseen, all cash"Jessica - IMO, you should not proceed if you're uncomfortable with that arrangement.

But the unit behind us is a two-story duplex and my dad is contemplating if that is right for him or not. 

I started in joint ventures with private lenders and a 50/50 arrangement even on a 13 unit.

I own a number of vacation rentals and am contemplating lightening my load. 

It is very clear in our listing what the sleeping arrangements are but some folks don't read and I want them to know for sure.  

A friend of mine told me about her parents' vacation rental arrangement, and this setup really appeals to me. 

No matter how much (or little) you make, arrange your lifestyle so you can save 20% of your income for investing later on.

If they have exceptionally good credit, the best they could hope for is 90% LTV (with owner occupancy).Another option is just selling the house to a typical buyer instead of an owner finance arrangement. 

Our closing is quickly approaching, and the attorney-trustee has not arranged for the non-owner occupant to relocate!