Property Taxes - Santa Clara County
https://www.sccassessor.org/index.php/online-services/property-search/real-property
Understanding Proposition 13https://www.sccassessor.org/index.php/faq/understanding-proposition-13
Property Taxes - Alameda County
http://www.acgov.org/propertytax/
Property Taxes - Contra Costa County
https://tcpws2.co.contra-costa.ca.us/taxpaymentrev3/lookup/