Stay Home, Pay Property Taxes Online. Property taxes are still due April 10. Pay them now from the comfort of your home. SEARCH, SELECT & PAY IT'S THE BEST WAY. 1. San Diego County Admin. Center 1600 Pacific Hwy, Room 162 San Diego, CA 92101. AVOID LATE CHARGES. Sign up for e-Notifications. * If you do not know the Tax Rate Area for which you want a tax rate, the following table lists a typical Tax Rate Area for each city in the county. This page allows you to search for San Diego County secured, unsecured, and defaulted properties. Please choose to search by either Assessor Parcel Number, Supplemental Bill Number, Escape Bill Number, Mailing Address or Unsecured Bill Number to display a list of matching or related records.