What would you do as a potential buyer

[Biko Mulah]

I have a property undercontract, but just found out the garage was transformed into a room, without any permits. The job looks poorly done. From the outside it looks like a garage but as soon as you enter the property its sealed all around with drywall. I could care less about the extra room. But i would like the seller to get rid of it, it looks like too much of a job to do myself, too risky too with all the illegal wiring of the outlets. Other than that the property is GREAT!..would i be asking for too much from the seller??...Thanks in advance for all your feedback.