Kitchen in the basement. Should I worry?

[Steven Booty]

I'm bidding on a house that is a 2-family that has a 2 bedroom on the second floor, and a huge one bedroom on the first floor. The basement is part of a mother/daughter setup with a full bathroom and kitchenette. There is a 'bedroom' there too. (Quotes because it doesn't qualify due to lack of egress window)

I'm 99% sure the basement was finished without permits. I could possibly change the 'bedroom' into a bedroom. However I don't know if I the kitchen and/or bathroom is something that could bite me in the behind down the road.

What does BP think? Have you encountered something similar before? 

Thanks!