Seller property stats differ from public record

[Sean Wilt]

Looking at a property built in the 1980s that the seller says is a 2/1 1606 square feet but all data bases I look at (Zillow, MLS, Propstream) show it as a 1/1 1070 square feet. Seller is advertising ARV based on the larger home. I have seen it from the street and it "could be" 2/1 1606 but won't know for sure until I can get in which won't be until next week.

Question is, wondering if it's possible the owner added on but did not get a permit so it's not on public record.  Do you see any pitfalls with this if that is what the case is?