Buying a home with non-permitted bathroom

[Alexandra Kuvalanka]

I'm in the process of purchasing my first home (will be my primary residence for 1 year or 2. Later to become a rental property.) The house was listed as a 2 bedroom 2 bathroom but was disclosed on the MLS listing that the 2nd bathroom was extended but was done so without permits. Both me and my realtor were unaware of this fact until just yesterday. We've already done the home inspection and appraisal and apparently the appraisers didn't realize it was not permitted either. I'm wondering the risk (if any) in moving forward with this purchase. My realtor is assuring me that it is fine and shouldn't effect me in any negative way, but I'm skeptical. Any help would be awesome!