When additions weren't permitted

[Johnny Diamantas]

Hello All, This issue has come up many times for us when evaluating and comping our leads. Let's say I get a call and seller tells me the house is a 4/2, 1200 sq ft and I confirm by viewing the property. However, the appraiser's site lists it as 2/2, 900 sq ft. After I buy & go to list on the MLS, will I be able to sell it as a 4/2, 1200 sq ft? I assume I need to inform the appraiser of the new dimensions before listing? Any advice is much appreciated.