Taxes FAQs | Treasurer Tax Collector What are special assessments? What happens if my current year secured tax amount due is unpaid by June 30 at 5:00 P M ? What is a secured property supplemental tax bill? What is a secured property escape tax bill? What are unsecured property taxes? When are unsecured property taxes due?
Home | Alameda County Government 2025 26 Secured Property Taxes This is a reminder that the 2nd installment of the 2025 26 Secured Property Tax is due on Friday, April 10, 2026 and becomes delinquent after 5 p m after which a 10% delinquent penalty and $10 cost will be assessed
Property | Alameda County Information regarding property including housing building concerns and property assessment and taxes
Property Search Property Search Parcel Number Type Ahead Address Property Address Parcel Number: Enter Parcel Number as shown on your tax bill e g , 123-345-67 Search Reset Assessor's Office Treasurer-Tax Collector