Alameda property tax payment. Pay, look up, or download your secured or supplemental bill. Information about starting/having a business in UNINCORPORATED Alameda County. Property Tax Property Tax Lookup/Payment Property Assessment Clerk-Recorder's Office Parcel Viewer Assessor Real Property Searches 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. Pay your secured, supplemental or unsecured property tax. Information regarding property including housing / building concerns and property assessment and taxes. after which a 10% delinquent penalty and $10 cost will be assessed. m. You can pay online by credit card or by electronic check from your checking or savings account. 5% will be charged for a credit card transaction; no fee for an electronic check from your checking or savings account. System maintenance and nightly processing generally occurs Sunday mornings from 7:00 to 9:00 AM and weeknights from 1:00 to 2:00 AM. bfzqrn bdzkwd wseoo wgvx tzvv plkej oqm hjcy gsosi ufwc