All current Assessor's Maps are on display at:
Alameda County Assessor – Public Records
Administration Building - Room 245
1221 Oak Street
Oakland, CA 94612
Office hours are 8:30 AM to 5:00 PM.
Maps may be purchased for $3.00 per copy for a 14" x 18" size, or $1.00 per copy for an 8.5" x 11" size. Maps may be purchased either in person at the above stated address or by sending a written request to:
Alameda County Assessor
1221 Oak Street, Room 145
Oakland, CA 94612
Attention: Mapping Unit
Enclose a check for the appropriate amount payable to: Alameda County Assessor
You may request a mapping combine of two or more parcels if certain criteria apply. If the parcels are contiguous and have identical legal ownership a combine may be possible. Combine requests must be filed with our office between July 1 and December 31. Before your request can be considered all current year taxes and any prior year's delinquent taxes must be paid in full by December 31. For example, to request a parcel combine for the 2014-15 tax year, the request must be filed between July 1, 2013 and December 31, 2013 and all taxes must be paid on or before December 31, 2013. For more information please call 272-3787.
Parcel Combine Request 2014-15 (PDF - 145kb)
Ownership information is available free of charge by visiting our public records section during normal business hours.
Ownership information for a limited number of parcels may be obtained by calling (510) 272-3787.
Property ownership is also available in writing for a fee, call (510) 272-3787 for further information.
The Assessor's office is required to lower the assessment of any real property if it is higher than the current market value as of January 1 of each year. Each case is reviewed individually upon request by the property owner for the current year or the upcoming year. For more information call (510) 272-3787.