How to change Square footage in the county records

[Anks Desai]

Hi -

We are in the process of purchasing a Primary home SFR in San Jose, CA. The home is originally listed for 1800 Sq ft per county records and MLS listing, however, when the appraisal came through, it came in short in terms of value as well as square footage. The appraiser counted the square footage at 1600 sq ft so the house did not appraise at the price we paid. We do not have any appraisal or inspection contingency and the initial deposit has already been paid to escrow.

Any ideas on what is the best course of action for us? Is there a way to change the country records to reflect the accurate square footage? How will that impact property tax?