The Santa Clara County Assessor’s Office “allows residents to view, free of charge, basic information about properties in Santa Clara County such as assessed value, assessor’s parcel number (APN), document number, property address and other information.” Here is a link to the Property Assessment Information System. Please note the following disclaimer: “California Government Code 6254.21 states that No state or local agency shall post the home address or telephone number of any elected or appointed official on the Internet without first obtaining the written permission of that individual.”