09/12/2026
Your property tax bill isn’t set in stone, it’s set by an algorithm that guesses your home’s value off market data, and nobody checks its work but you.
If a comparable home nearby sold for less than your assessed value, you’ve got a case, and filing the appeal is free.
Alameda County owners have until September 15th, Contra Costa until November 30th. Comment “link” and I’ll send you the exact steps to pull the form and file it yourself.