Buying multifamily with a non-confirming unit seattle/kent area

[Eduardo Bravo]

Hi BIggerPockets friends,

I'm in contract to buy a 2.5m multifamily with a non-confirming unit in the seattle/kent area. The building is being marketed as a 13 unit, with a decent cap rate of 6%, however, after looking at the property details in the property assessor website the building is legally a 12 unit although still zoned Multifamliy (MR-M).

My questions are:

- How common are these situations in the Multifamliy space?

- Would the bank/appraiser take into account the income from the 1 non-conforming unit.

- Should I be concerned of future city property inspections?

Thanks for you advice