Santa Clara County Property Tax Appeal

Use this guide to find the filing window, appeal office, forms, fees, submission path, informal review option, and hearing preparation notes for Santa Clara County property tax appeals.

Key Dates

• File a regular 2026 Santa Clara County assessment appeal between July 2, 2026, and September 15, 2026.¹

Where To File

• File a formal Santa Clara County assessment appeal through the Office of the Clerk of the Board of Supervisors.²
• The Clerk of the Board accepts assessment appeal applications, reviews them for compliance, schedules hearings, and serves as the official record keeper.³

Forms And Fees

• Use Santa Clara County's Assessment Appeal Application from the county appeal forms page.⁴
• Beginning June 1, 2026, Santa Clara County assessment appeal applications require a nonrefundable administrative fee: $290 for residential, vacant land, and agricultural properties, and $675 for commercial, business, and multifamily properties with five or more units.⁵

Submission Methods

• Start or manage a Santa Clara County appeal online through the county's File And Manage Your Appeal Application path.⁶

Informal Review

• Before filing a formal appeal, you may request a free informal assessment review with the Santa Clara County Office of the Assessor.⁷

Evidence And Hearing Process

• Prepare evidence that supports the value you are requesting. BOE gives this statewide hearing-preparation guidance; Santa Clara County also says the Clerk schedules hearings before hearing officers or Appeals Boards.³⁸

What Still Needs Verification

• Before submitting, recheck your fee category, accepted payment method, fee-waiver eligibility, and form choice on Santa Clara County official appeal pages because filing details can change.⁹

Footnotes

1. BOE lists Santa Clara County's 2026 regular assessment appeal deadline as September 15. Source: California BOE LTA 2026/023 Regular Assessment Filing Periods. ↩

2. Santa Clara County's Appeal Your Property Taxes page is under the Office of the Clerk of the Board of Supervisors. Source: Santa Clara Appeal Your Property Taxes Page. ↩

3. Santa Clara County states that the Clerk of the Board accepts assessment appeal applications, reviews them for compliance, schedules hearings before hearing officers or Appeals Boards, and serves as official record keeper. Source: Santa Clara Appeal Your Property Taxes Page. ↩ ↩²

4. Santa Clara County's appeal forms page lists the Assessment Appeal Application. Source: Santa Clara Property Tax Appeal Forms Page. ↩

5. Santa Clara County states that, beginning June 1, 2026, assessment appeal applications require a nonrefundable administrative fee and lists the $290 and $675 fee categories. Sources: Santa Clara Appeal Your Property Taxes Page, Santa Clara Property Tax Appeal Forms Page. ↩

6. Santa Clara County provides a File And Manage Your Appeal Application path from its appeal page. Source: Santa Clara Appeal Your Property Taxes Page. ↩

7. Santa Clara County says taxpayers may request a free informal assessment review with the Office of the Assessor before submitting a formal assessment appeal. Source: Santa Clara Appeal Your Property Taxes Page. ↩

8. BOE says taxpayers should be prepared to present evidence supporting the requested value. Source: California BOE Assessment Appeals FAQ. ↩

9. Santa Clara County provides fee categories, payment methods, fee-waiver guidance, and appeal form links. Sources: Santa Clara Appeal Your Property Taxes Page, Santa Clara Property Tax Appeal Forms Page. ↩