Proposition 19, takes effect on April 1, 2021. It is estimated to increase tax revenue overall. It increases taxes on inherited properties that are used as either a second home or as income properties. It provides more opportunities to save taxes on primary residence replacements.
More information is available about Proposition 19 and about California property taxes.
Cupertino Real Estate Trends
The plot of both average and median quarterly Cupertino house prices will generally alert you to unusually high or low prices by the separation between the average and median prices changing.
Changes in the Cupertino real estate market typically create significant changes in the sales price to list price. The list price is set by looking at recent sales prices. The comparison shows how well sales prices follow expectations.