Disclosure: I hold only SFH because I prefer the diversity of location and structure and consider the investments part of my resale & exit strategies.

An aba disclosure must be made, please read through respa laws and regulations, it is under hud, but I or we Really don't know the actual facts, just a possibility 

They are proving to be problematic, to say the least.Real estate professionals call it TRID, which is short for Tila-Respa Integrated Disclosure.

Full disclosure; (I make mistakes almost everyday)First, shame on you for allowing unit 2 to live rent free. 

The reason I say this is because as a seller if you've had a prior inspection and there's a finding you are supposed to update your disclosure     For example, you have a buyer the house gets inspected they find something bad and walk.    

It hasn't held him back at all as far as I know.That said, there are plenty of other investors who say that the required disclosures are no big deal.

@Mike Wood It is a closing disclosure.

Two different attorneys I know have differing views: one states it must be disclosed forever, and the other states no disclosure required if remediated.

@Matt Holmer  Full Disclosure, I am a Portfolio Lender that Specializes in these type of Loans....but that being said, Rates are between 6.5-8.50% 30 year fixed/30 year amortization with a 1 year Prepayment penalty.  

This eliminates purchase issues, property condition can be addressed along with disclosures that may be required.