Homestead Exemption on newly acquired home

[Matt Gregory]

Hi BP,

I purchased a home towards the end of 2018 that was under a homestead exemption for 10+ years. The property had been taxed at 240k in 2018. After the sale, Dallas county raised the appraised value up to 440k (sale price was 425k). I have added my own homestead exemption to the property but is it possible for appraised value to go back into the 240-260 range or does it start over with the sale of a home?

It's a primary residence for now