Deadline for 2019 Regular Assessment filing expired on December 2, 2019 at 12 midnight PST.

Welcome to the Los Angeles County
Assessment Appeals Board
Online Filing and Tax Agent Registration Website

On Sunday, March 15, 2020 the Los Angeles County Board of Supervisors, following an announcement by California Governor Gavin Newsom, announced that all Los Angeles County facilities will be closed to the public beginning March 16, 2020 until further notice in response to the evolving coronavirus (COVID-19) emergency. This is a precautionary measure intended to help slow the spread of COVID-19 in Los Angeles County.

At this time the Assessment Appeals Board, based upon the directive of the Board of Supervisors, is currently postponing hearings through May 1, 2020 or until Los Angeles County facilities are open pursuant to a Board of Supervisor's directive, whichever is later in time.

Assessment Appeals Applications can be submitted on-line at https://lacaab.lacounty.gov or downloaded and mailed to:

Los Angeles County Assessment Appeals Board
500 West Temple Street, Room B4
Los Angeles, CA 90012
Please check back as this notice is subject to change as the COVID-19 emergency evolves.

To file for an Assessment Appeals application online, click on the "Applicant Login".

Instructions - How to Complete an online Assessment Appeals Application (AAB-100)

To submit your application via mail or in-person, click on "Forms" to access and download the printable Assessment Appeals application form (AAB-100).

Notice to Tax Agents

Pursuant to Los Angeles County Code Chapter 2.165, no tax agent shall represent taxpayers before a County official without first being registered.

For more information on the Tax Agent Registration Program, including program requirements, ordinance, frequently asked questions, or registration instructions, click here.

To submit your application via mail or in-person, click on "Forms" to access and download the printable Assessment Appeals application form (AAB-100).

To file online online, click on the "Tax Agent Login". You must be a registered tax agent in order to file for an online application.

For instructions on how to register, click here.

For instructions on how to renew your annual registration, click here.

For instructions on how to submit your campaign contribution report, click here.

Pursuant to State Board of Equalization Property Tax Rule 305 Section (a)(1) and Los Angeles County Assessment Appeals Board Rule Section 4(A)(2)(d), for application(s) filed by an agent (other than a California licensed attorney who has been directly retained and authorized by the person affected to file the application), the applicant's written authorization must be properly indicated on the application or attached with each application at the time of filing.

For instructions on how to submit an online application, including upload/attachment of Agent's Authorization, click here.


Types of Assessments and Filing Periods

TYPE OF ASSESSMENT FILING PERIOD
Regular Assessments Filing dates are July 2 to November 30*, of each year for all real and personal property assessments.
Supplemental Assessments Filing dates are within 60 days of the mailing date printed on the Supplemental notice or tax bill, or the postmark date of the notice or tax bill, whichever is later.
Roll Change/Adjusted and Escape Assessments Filing dates are within 60 days of the mailing date printed on the notice or adjusted/escape assessment tax bill, or the postmark date of the notice or tax bill, whichever is later.
Misfortune Calamity Reassessments Filing dates are within six months after the mailing date of the proposed reassessment notice.

*Please Note: If the final filing date falls on a Saturday, Sunday, or a legal holiday, an application that is mailed and postmarked on the next business day shall be deemed to have been filed timely.


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