Research our Data

The Assessor’s office receives information from many agencies in the process of producing an annual roll.  Some of this data comes from public resources and other is provided by individuals and government agencies and may be held confidential as required under Revenue and Taxation Code 408 (b).  See more in this area under Privacy & Our Data.

Our website allows you to search and look up property characteristics and values for any property in Ventura County. In addition, our maps can be researched with either the 10-digit parcel number or by address.

Much of our data is supplied to you for your own research.  However if you need to access larger amounts of data or you need it in a specialized format our Data for Sale will help you to determine the costs and formats available.

Finally, we have provided a link to the Supplemental Tax Estimator.  Supplemental taxes result from a change to the taxable value that adjusts either upward or downward with a sale or new construction.  When the new taxable values are determined following change of ownership of property or completion of new construction either a bill or refund can be generated.  With this tool an estimated value of supplemental taxes owed can be generated.