Hi! Trying to buy a house in Chicago. We received an accepted offer. The house is listed as a single family home and zoned as RS-3 BUT there are two electrical boxes in a nice in-law unit in basement. My offer is for a typical 30yr. Conventional mortgage on a SFH but, I'm worried about this basement unit. Everything works. What will an appraiser say about the 'in-law" basement unit? What will my lender say? Any thoughts or advice is much much appreciated!! Thank you.