As of mid-November 2026, a missing property-tax bill is something to address now if you own an Oakland, California, home. Alameda County’s Treasurer-Tax Collector says the first installment was due November 1 and becomes delinquent at 5 p.m. December 10; after that, a 10% penalty attaches. Request a duplicate, then choose how to pay before the deadline.
Pay the first installment before 5 p.m. December 10
The Treasurer-Tax Collector gives the first-installment delinquency time as 5 p.m. December 10. After that time, the county says a 10% penalty attaches. If you need to check the installment shown for your property, use the county’s secured-property-tax payment site or request a duplicate bill. The county says you can look up or download a secured bill online. Check the bill before choosing which installment to pay; the county says payment due dates are printed on the coupons attached to it.
No bill? Request a duplicate
The Treasurer-Tax Collector says an owner who did not receive a secured tax bill can request a duplicate online, by phone or at its office. You can also use the county’s online secured-bill lookup and download. The county’s property-tax search accepts a property address or parcel number.
- Use the county’s property-tax site to request a duplicate or look up your secured bill.
- To request a duplicate by phone, contact the Treasurer-Tax Collector.
- To request one in person, ask at the Treasurer-Tax Collector’s office.
- Check the first-installment information on the bill you obtain before paying.
Compare online payment methods
Alameda County accepts online secured-property-tax payments. An electronic check has no fee; the county says a credit-card transaction carries a 2.5% convenience fee. Compare those methods before selecting one, particularly if the missing bill has left you little time before the delinquency deadline.
Use the county’s payment site to look up the secured bill and pay online. Check that you are paying the first installment for your property. If you need the bill before choosing a payment method, the county says the secured bill can be looked up or downloaded online.
Mailing? Allow for the postmark rule
The county warns that the postmark date for a mailed payment is the date the item is first processed by postal equipment, not the date it is picked up from the mailbox. If you choose to mail your payment, do it well before December 10 rather than relying on the pickup day as its postmark…