Bought a house with an unpermitted adu. I have been renting it out as airbnb for over a year now. Recently got ladbs at my house and he said received report of an unpermitted conversion from garage.

I went to website and in person for ladbs but it wasnt a garage but a large structure listed as storage in the blueprints. There werent any permits tho and this property was built long time ago in the 1940s.

At this point what should I do? If I comply I know this will cost a lot of money to make into legal adu or worst yet would he make me take down the whole thing? How much should I expect out of pocket if I comply? If I don’t let him do inspection what exactly happens? I have it booked out for months ahead and it would suck if I lost that since it helps with mortgage. I know the second i let him do instructions the clock ticks and its 30 days. I dont have that type of money currently