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The Alameda County Assessor is pleased to announce that the AC Property App is now available on Apple devices. You can lookup your assessed value, property taxes, and parcel map. You can even pay your property taxes right from the app. Download it from the iTunes store.

General & Ownership Information
(510) 272-3787
Business Personal Property:
(510) 272-3836
Our business hours are from 8:30AM to 5:00PM Monday through Friday except for holidays
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Senior Citizens & Disabled Person(s)
Under certain conditions, persons aged 55 and older or severely disabled persons of any age may transfer the Proposition 13 factored base year value of their principal residence to a residence acquired or built as its replacement (ref. Proposition 60 & Proposition 90, Revenue and Taxation Code section 69.5). A base year value transfer allows an eligible homeowner to preserve their Proposition 13 protected assessed value. Essentially the base year value transfer creates an exclusion from reappraisal at fair market value on the replacement property.