Looks like a good deal on a duplex. But it may get complicated..

[Jarrod Deshields]

*Newbie Here*

I'm looking into a deal on a duplex in my area that has the potential to be a pretty good deal. There's been a couple buyers who came with hard money but fell through because the property wouldn't appraise for +200k ARV. Realtor says 175-180k. No problem.

The realtor also told me that because the units didn't rent over a year, the city now classifies this property as a single family. Once purchased it can still be rented as intended.

My question is how, if in any way, will this affect my financing or HML qualifications? Will it hinder me in the future if I decide to sell or refi?

*Also, I have yet to get inside of the property but looking through windows I can see all black around the walls. About 1 foot up the wall from the floor. Can anyone speculate on what this is? Mold?

Thanks for any and all insight.