My primary concern is that there are generally no market comparables for undeveloped land in developed areas.
If I believe it’s over-stated, I can appeal my property tax assessment by using comparables for nearby developed property. There is no equivalent market-based process for land values alone.
There's several anchoring sales nearby, you can regress out from all sales, etc. etc. And it's smoothly varying for nearby parcels, with very little change!
A much better explanation than what I can write can be found in the "Estimating" section here https://landeconomics.org/reports/california-billionaire-wea...