Los Angeles County Property Tax Appeal 2026
How to appeal your property assessment in Los Angeles County (Los Angeles), CA. Everything below is pulled from Los Angeles County Office of the Assessor. Always confirm the current details with the county before filing — this is general information, not legal advice.
July 2 through November 30 (regular assessment appeal filing period)
$800,000
~0.72% effective rate
Application for Changed Assessment (filed with the Clerk of the Assessment Appeals Board)
Los Angeles County property tax appeal deadline 2026
The 2026 deadline to appeal your Los Angeles County property assessment is July 2 through November 30 (regular assessment appeal filing period). File your Application for Changed Assessment (filed with the Clerk of the Assessment Appeals Board) with Los Angeles County Office of the Assessor on or before that date — miss it and you generally wait until next year. File as early in the window as possible to secure a hearing slot.
Who assesses & hears your appeal
Los Angeles County Office of the Assessor
Appeals are heard by the Los Angeles County Assessment Appeals Board.
How to file in Los Angeles County
Online via the LA County Assessment Appeals portal
bos.lacounty.gov/services/assessment-appeals/Mail the Application for Changed Assessment to the Clerk of the Board
500 W Temple St, Room 383, Los Angeles, CA 90012
Under Proposition 13, your assessed value is generally capped near your purchase price plus up to 2%/year. Appeals typically argue the current market value has fallen below your factored base-year value (a Prop 8 “decline in value” appeal).
Los Angeles County property tax appeal FAQ
When is the LA County assessment appeal deadline?
The regular filing period runs July 2 through November 30. Supplemental or escape assessments have their own 60-day windows from the notice date.
What is a Prop 8 decline-in-value appeal?
A Proposition 8 appeal argues that your property’s current market value is lower than its Prop 13 factored base-year value, temporarily reducing your assessment until the market recovers.
Deadlines, forms, and contact details change — always confirm with Los Angeles County Office of the Assessor before filing. This is general information, not legal advice.
Appeal your Los Angeles County assessment
Check your property for $4.99 (credited), then get the full comparable-sales packet and AI appeal letter for a flat $29 — $19 at launch. Built for CA filings.