Utilizing information received from government & subdivision maps, recorded deeds, road surveys, and other similar resources, the Assessor's office establishes and maintains a set of more than 21,000 maps delineating every parcel of land in the County. These maps serve as the basis for the assessment of all real property in the County of Riverside, and are continuously updated to reflect new subdivisions and parcels.

Copies of these maps as well as property characteristic information are available for purchase by the public. The maps include Assessor's parcel numbers, parcel & lot boundaries, recorded dimensions, acreage, street widths, adjoining parcels, and recorded map information. Street addresses and ownership are not shown on Assessor's maps, however, the Assessor's parcel can be used to obtain ownership and address information.

The per-copy fee for Assessor's maps is $6.50

You may obtain an Assessor's parcel map in person, at the County Administration Center in downtown Riverside, or in the mail by sending your request (along with your return address and a check or money order payable to "Riverside County Assessor") to:

Riverside County Assessor P.O. Box 12004 Riverside, CA 92502-2204

For further information, call the Assessor's office at (951)955-6200.

The Assessor's office provides a public information service to assist taxpayers with questions about their property. Property ownership, parcel maps, and other property information is available for viewing on computers and microfiche. The information is available in the public area of the Assessor's office during normal business hours. Assistance is also available at any of our regional locations - check our offices section for the business hours of the office nearest you.

Through this system, which is available 24 hours a day, you may change your mailing address, obtain assessment and tax payment information, request forms for Assessment Appeals, Owner's Request for Review, exemptions and transfers of base year values for seniors and displaced property owners. You may also get information on Assessor's office locations and hours. Metropolitan Riverside area (951)955-6200, outside this area but within the (951) and (760) area codes 1(800)746-1544. However, to speak with a technician you must call during regular phone service hours, Monday through Friday from 9:00 to 4:00.