California discloses nothing, and the tax discloses everything
No California county publishes what a property sold for. What Alameda County does publish is its ownership transfer list, which carries the value the documentary transfer tax was computed on. That tax is a fixed rate on the consideration, so the value read back off it is the price on the deed.
What the report shows
For every parcel inside your radius, the priced transfers the county recorded, newest first, with the middle price and the range. On one downtown block: 74 priced sales, the middle one $405,000, the range $214,500 to $10,600,000.
Three things it is not
- It is not current. The county published this list as a snapshot covering 2 April 2023 to 31 March 2025 and has not added to it. The report names both ends rather than saying “since 2023” and letting you assume it runs to today.
- It is not every transfer. A deed with no consideration — between family, a quit-claim, a foreclosure — carries no transfer-tax value, and those are left out rather than shown as sales for nothing.
- It is not one price per parcel. A deed covering several parcels puts the same amount on each. Rows sharing a date and an amount are counted once, at the price of the package.
Counts run 5 September 2026.