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San Diego County · CaliforniaAppeal Your San Diego County Property Tax.
The San Diego County Assessor's office in San Diego 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.
San Diego County Assessor
Source: California State Board of Equalization county directory.
San Diego 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 look up your assessed value on the San Diego Secured Assessment Roll Search.
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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 informal Review of Assessment with your report
San Diego County has a dedicated downloadable "Review of Assessment (Proposition 8)" form. Filing window: December 1 – April 30. Important: this is one of California's earliest informal review deadlines — do not wait until summer. No fee.
DIY Download the fillable form, attach your Vulorean report and comparable sales as supporting documentation, and mail to the Assessor's Office by April 30.Concierge Your Vulorean rep handles the form completion and submission on your behalf.- Informal review form (PDF): Review of Assessment — Proposition 8 (PDF)
- Real Property Assessment info: sdarcc.gov — Realty Assessment
- Assessor phone: (858) 505-6262
- Assessor alt phone: (619) 236-3771
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Await assessor response
DIY If approved, any reduction will be reflected on your next tax bill issued in fall. Reviewed automatically each year thereafter.Concierge Your Vulorean rep monitors the response and keeps you informed. -
Formal appeal if denied
DIY File an Application for Changed Assessment (BOE-305-AH) with the San Diego County Assessment Appeals Board between July 2 and November 30. No filing fee. File in parallel with step 3 — the informal window closes April 30, well before the formal appeal opens.Concierge Your Vulorean rep handles the appeal filing on your behalf.- Assessment Appeals Board: sandiegocob.com
- Assessor / Recorder / County Clerk offices: sdarcc.gov
San Diego 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 San Diego County Assessor in San Diego.
When You Probably Qualify for a San Diego County Reduction
- Your current assessed value is above recent sales of comparable homes in San Diego County
- You bought in San Diego County in the last 12 months below the county's assessed value
- Your San Diego 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 San Diego Assessor hasn't adjusted
San Diego County Appeal Package · $50 Flat
We pull your San Diego 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 San Diego County Appeal →San Diego County Property Tax FAQ
When does San Diego County mail assessment notices?
California counties, including San Diego, 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 San Diego 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 San Diego County homeowners file and represent themselves.
Will my San Diego 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.