Los Angeles County Assessor's Office

Please follow these instructions: To identify your property, enter only the street address (e.g. 123 Main). Do not enter a street direction (N., North, E., East, etc.) or a street title (Ave., Street, Blvd., etc.). OR, enter the 10-digit Assessor Identification Number (AIN) and click on "Go".

If there is no property address and you do not know the AIN, click here to locate the property using the assessor’s maps by entering the cross streets nearest your property.

Street Address: OR AIN:

The Supplemental Tax Estimator provides an estimate of the amount of supplemental taxes you can expect to pay if you have recently purchased a property. Please note that the estimator is intended for changes in ownership only and not for new construction.

There are a number of situations in which the Supplemental Tax Estimator will not be able to produce a reliable estimate. The most common are:

More than one change in ownership has occurred in a calendar year.
A change in ownership and new construction has occurred in a calendar year.
Partial interest transfers where less than 100% of the property has changed ownership.
Some new housing tracts or condominium subdivisions in which the map recording and change in ownership has occurred in the same calendar year.

If you would like an estimate of the supplemental taxes in these or other atypical situations or have additional questions about supplemental taxes, please email the Assessor’s Office at helpdesk@assessor.lacounty.gov