The heated sqft differ from list and county web.

[Huiping S.]

The list heated area is >2000 sqft but the county web shows this property heated area is1890 sqft. The seller added the architecture's map as evidence on property disclosure that the remodel work added new sqft. The work has been finished for more than 7 years by seller by far.

Should I trust seller or how to verify which number is correct? So much sqft be added, does the seller need to get the permission from county? The seller brought the property by cash 11 years ago, and looks the information didn't have update since then.

Thanks.