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Los Angeles County · CaliforniaAppeal Your Los Angeles County Property Tax.
The Los Angeles County Assessor's office in Los Angeles values every property on California's January 1 lien date. When that assessed value overshoots the market, you have two tools: an informal Prop 8 decline in value review with the assessor, or a formal Assessment Appeals Board filing with the Clerk of the Board.
Los Angeles County Assessor
Source: California State Board of Equalization county directory.
Los Angeles County Prop 8 Filing Steps
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Check if your property qualifies
Run your address or APN through vulorean.com to see if your assessed value exceeds current market value as of January 1. You can also check your current assessed value at the LA County Assessor portal.
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Get your Vulorean valuation report
The report produces a market value opinion as of the January 1 lien date and includes comparable sales. Choose DIY (you file using the report) or Concierge (Vulorean handles everything from here).
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Submit your Decline-in-Value application (Form RP-87) with your report
LA County has a dedicated online Prop 8 application (Form RP-87) — filing window is July 2 – November 30.
DIY Complete Form RP-87 online or by mail and attach your Vulorean report as supporting documentation. Include two comparable sales dated no later than March 31.Concierge Your Vulorean rep handles the form completion and submission on your behalf.- Online Prop 8 application (RP-87): assessorapp.lacounty.gov — RP-87
- Prop 8 info page: assessor.lacounty.gov/decline-in-value
- Assessor phone: (213) 974-3211
- Assessor toll-free: (888) 807-2111
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Await assessor response
DIY If approved, your reduced value is reflected on your tax bill. Check status anytime at assessorapp.lacounty.gov. Note: RP-87 approval is for one year only — re-file annually if still applicable.Concierge Your Vulorean rep monitors the response and keeps you informed. -
Formal appeal if denied
DIY File Form AAB-100 with the LA County Assessment Appeals Board between July 2 and November 30. File this in parallel with step 3 — do not wait for the RP-87 result. Note: $46 non-refundable filing fee.Concierge Your Vulorean rep handles the appeal filing on your behalf.- AAB application (AAB-100): bos.lacounty.gov/services/assessment-appeals
- AAB phone: (213) 974-1471
Los Angeles County reminder: California's Prop 13 caps annual taxable value growth at 2%, so a successful appeal keeps paying dividends every year your market value sits below the Prop 13 base. Prop 8 is the complement. It lets you capture temporary market dips. Both paths run through the Los Angeles County Assessor in Los Angeles.
When You Probably Qualify for a Los Angeles County Reduction
- Your current assessed value is above recent sales of comparable homes in Los Angeles County
- You bought in Los Angeles County in the last 12 months below the county's assessed value
- Your Los Angeles Assessor parcel record has errors, wrong square footage, added features that don't exist, or incorrect grade
- Your home has unrepaired damage, structural issues, foundation settling, or major deferred maintenance
- Your neighborhood's market softened but the Los Angeles Assessor hasn't adjusted
Los Angeles County Appeal Package · $50 Flat
We pull your Los Angeles County Assessor record, build comparable sales, and produce a filing ready BOE-305-AH appeal in 48 hours. You keep 100% of the savings.
Start My Los Angeles County Appeal →Los Angeles County Property Tax FAQ
When does Los Angeles County mail assessment notices?
California counties, including Los Angeles, typically mail notices in June or July. Your window to file BOE-305-AH opens July 2 and closes either September 15 or November 30 depending on the county's Clerk of the Board schedule. Confirm with the Los Angeles Clerk's office.
Do I have to use an attorney?
No. The California Assessment Appeals Board is designed for pro se homeowners. Filing BOE-305-AH is a two page form and hearings are informal. Most Los Angeles County homeowners file and represent themselves.
Will my Los Angeles County taxes go up if I appeal?
No. California appeal outcomes at the Assessment Appeals Board are strictly reductions or no change. Prop 13 caps assessed value growth at 2% per year regardless.
Is Prop 8 the same as Prop 13?
No. Prop 13 is the base year rule that caps annual assessment growth. Prop 8 is the companion rule that lets the assessor (or you) temporarily drop your value below the Prop 13 base when the market falls. When the market recovers, your value can rise back up to the Prop 13 cap, but not above it.