Home › States › California › Santa Clara County
Santa Clara County · CaliforniaAppeal Your Santa Clara County Property Tax.
The Santa Clara County Assessor's office in San Jose 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.
Santa Clara County Assessor
Source: California State Board of Equalization county directory.
Santa Clara County Prop 8 Filing Steps
-
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 assessed value and Notification of Assessed Value on the Santa Clara Decline in Value Request portal.
-
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).
-
Submit your Prop 8 Decline in Value request with your report
Santa Clara County has a dedicated online "Decline in Value Request" form. Filing window: July 2 – August 1. Important: this is one of California's shortest informal review windows — act immediately when value notices arrive in late June. No fee.
DIY Submit the online form with your Vulorean report as supporting documentation. Requests can also be made by phone, fax, or mail.Concierge Your Vulorean rep handles the form completion and submission on your behalf.- Decline in Value Request (online): sccassessor.org — Decline in Value Request
- Prop 8 info: asr.santaclaracounty.gov — Prop 8 Important Points
- Assessor phone: (408) 299-5500
- Email: RP@asr.sccgov.org
- Assessor office: 130 West Tasman Drive, San Jose, CA 95134
-
Await assessor response
DIY The Assessor reviews all Prop 8 requests through August 15 and sends results shortly after. If approved, the reduced value appears on your fall tax bill and value is reviewed automatically each year.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 Santa Clara County Clerk of the Board between July 2 and September 15. Important: September 15 is an early deadline — file in parallel with step 3 immediately after receiving your value notice. Do not wait for the informal review result.Concierge Your Vulorean rep handles the appeal filing on your behalf.- Assessment Appeals Board: clerkoftheboard.sccgov.org/assessment-appeals
- Clerk of the Board phone: (408) 299-5088
- Clerk of the Board office: 70 West Hedding Street, San Jose, CA 95110
Santa Clara 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 Santa Clara County Assessor in San Jose.
When You Probably Qualify for a Santa Clara County Reduction
- Your current assessed value is above recent sales of comparable homes in Santa Clara County
- You bought in Santa Clara County in the last 12 months below the county's assessed value
- Your Santa Clara 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 Santa Clara Assessor hasn't adjusted
Santa Clara County Appeal Package · $50 Flat
We pull your Santa Clara 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 Santa Clara County Appeal →Santa Clara County Property Tax FAQ
When does Santa Clara County mail assessment notices?
California counties, including Santa Clara, 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 Santa Clara 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 Santa Clara County homeowners file and represent themselves.
Will my Santa Clara 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.