Santa Clara Property Tax: Rates, Deadlines & Appeal (2026)

For the 2026/27 regular assessment roll, Santa Clara County homeowners must file a formal assessment appeal by 5:00 p.m. on Tuesday, September 15, 2026. File with the County of Santa Clara Assessment Appeals Board / Office of the Clerk of the Board, preferably through the online appeal portal; paper applications go to 70 W. Hedding Street, East Wing, 10th Floor, San Jose, CA 95110. The new residential filing fee is $290 per parcel/application.

How assessments work in Santa

Santa Clara County’s 2026/27 regular roll values are based on the January 1, 2026 lien date. The Assessor’s 2026/27 Notification of Assessed Value lookup states that if the market value is above your factored base-year value, the factored base-year value is enrolled; if market value is below it, the lower market value is enrolled. That is the local Prop. 13 / Prop. 8 logic homeowners should understand before appealing.

In plain English: if you bought years ago, your assessed value may still be far below today’s market value because Prop. 13 generally limits annual increases to the California CPI or 2%, whichever is lower. If you bought recently, remodeled, or had a supplemental assessment, your assessed value may be much closer to market and more worth checking.

Santa Clara mails/maintains early assessed-value notices, so the regular appeal period is the California short window: July 2 through September 15. The county’s own deadline table lists July 2–September 15 for regular assessments, and the state rule says September 15 applies where the assessor provides value notices by August 1.

Tax rates vary by Tax Rate Area (TRA), not just by city. The county’s FY 2025/26 rate book says rates are per $100 of assessed value and include the 1% maximum levy plus voter-approved debt. For example, San Jose TRA 017-091 totals 1.20400 per $100, i.e. about 1.204% before fixed direct charges that do not change when value changes.

Whether you should appeal

Appeal only if your evidence shows the county’s January 1, 2026 value is too high. The strongest residential case is usually a decline-in-value appeal: comparable closed sales near January 1, 2026, similar in location, lot size, building size, condition, view, school district, and other amenities.

A quick savings test: assume a San Jose homeowner in TRA 017-091 has a 2026/27 assessed value of $1,350,000, but three comparable sales support $1,250,000 as of January 1. The disputed reduction is $100,000. At the 1.204% TRA rate, the rough annual tax savings would be $1,204 ($100,000 × 0.01204), not counting fixed parcel charges. After the $290 residential filing fee, the first-year net benefit would be about $914 if the owner wins the full reduction. If your realistic reduction is only $15,000, the tax savings is about $181, which is less than the filing fee.

Before paying the nonrefundable appeal fee, request the Assessor’s free informal assessment review if available for your situation. Santa Clara’s Clerk explicitly tells owners to do the informal review before filing because appeal fees are nonrefundable.

I did not find a current official Santa Clara County publication with 2026 homeowner appeal success rates or median reductions. Treat anyone quoting countywide win rates as marketing unless they can point to an official county dataset.

Step-by-step how to file

1. Look up your 2026/27 value. Use your APN and PIN from the Notification of Assessed Value. Save the notice; you will need the roll value and property identifiers.

2. Decide the appeal type. Most homeowners use Regular Assessment – value as of January 1 of the current year and reason Decline in Value. Supplemental, escape, roll-change, penalty, and calamity appeals have separate deadlines—commonly 60 days from the notice, except calamity reassessment is listed locally as 180 days.

3. Use the exact form. The current form is BOE-305-AH, Assessment Appeal Application. Santa Clara’s 2026 version is titled Assessment Appeal Application and says not to attach hearing evidence to the application. You can use the county’s online portal or the PDF/fillable PDF from the Clerk’s Appeal Forms page.

4. State your value. Section 4 requires the roll value and your opinion of value. Leaving out your opinion of value can get the application rejected.

5. Request the right hearing path. For a single-family home, condo, cooperative, or 1–4 unit dwelling, you may request a Hearing Officer on the form. Otherwise, cases are generally calendared to a three-member board.

6. Pay the fee. Effective June 1, 2026, Santa Clara charges $290 per parcel/application for residential, vacant land, and agricultural properties; commercial/business/multifamily properties with 5+ units are $675. Payment may be cash, check, money order, or credit card; credit cards carry a 2.22% service fee with a $1.49 minimum. Applications without the fee are not processed. Fee waivers may be available for applicants receiving public assistance.

7. File on time. Initial filing methods are: online portal, mail, or hand delivery. The county says paper applications can be hand-delivered Monday–Friday, 8 a.m.–5 p.m., to County Government Center, 70 W. Hedding Street, East Wing, 10th Floor, San Jose, CA 95110. The form lists the mailing address as County of Santa Clara Assessment Appeals Board, 70 W. Hedding Street, East Wing, 10th Floor, San Jose, CA 95110. Email and fax are for questions or later hearing-response paperwork—not for filing the initial appeal. Note: the Clerk announced no in-person application submissions on Friday, July 31, 2026, because of offsite training.

What happens after

The appeal authority is the County of Santa Clara Assessment Appeals Board, administered by the Assessment Appeals Division of the Office of the Clerk of the Board of Supervisors. Hearings are scheduled before one of four Assessment Appeals Boards or before a Value Hearing Officer.

You still must pay your property tax bill on time while the appeal is pending. The Assessor’s FAQ warns that late payment penalties apply even if your assessment is later reduced; if you win, the county issues a refund with interest.

At least 45 days before the hearing, the Clerk mails a First Assessment Appeals Hearing Notice and Appeal Response Form. You must return that response at least 21 days before the hearing. If you show up without returning it, the hearing may be limited to scheduling a future value hearing; if you fail to appear, the appeal may be denied.

Bring evidence copies: Santa Clara requires six extra copies for Appeals Boards I–IV and four extra copies for Value Hearing Officers. At the hearing, you and the Assessor present factual evidence under oath, may question each other, and the Board or Hearing Officer decides the value from the evidence. The decision may be announced at the hearing or mailed later. State law allows up to two years from filing for the appeal to be heard and decided unless extended. There is no county-described paper-only residential value decision path; the realistic non-oral outcomes are an Assessor stipulation before hearing, withdrawal, or denial for nonappearance.

Local tips

Use January 1 comps. Santa Clara’s hearing-prep page notes that comparable sales more than 90 days after the lien date cannot be considered under Revenue and Taxation Code section 402.5. For 2026/27, avoid relying on sales after about April 1, 2026.

Check exemptions separately from appeals. The Assessment Appeals Board can decide value, not whether you qualify for an exemption. The big one is the Homeowners’ Exemption, a one-time claim that reduces taxable value by up to $7,000 for an owner-occupied principal residence. File by February 15 for the full exemption; late filing through December 10 generally gives partial relief. Disabled veterans and surviving spouses should also check the Disabled Veterans’ Exemption, and homeowners over 55, severely disabled, or displaced by disaster should review Prop. 19 base-year transfer rules.

Do not attach your whole evidence packet to the application. The form says hearing evidence is presented later. For filing, focus on a complete application, the right roll year, the correct assessment type, your opinion of value, signature, and fee.

Manual postmark matters. If mailing near the deadline, get a USPS counter postmark. The county warns private postage meter dates do not qualify. For September 15, 2026, assume you need the online submission completed, hand delivery made, or USPS postmark secured by 5 p.m.

Santa Clara Property Tax Rate

County of Santa Clara: 1% maximum countywide general property-tax levy on assessed value; total bills may be higher because voter-approved bonds, direct assessments, and special assessments vary by tax-rate area. The official FY2025-26 rate book lists rates by Tax Rate Area (TRA).

Source: https://dtac.santaclaracounty.gov/distribution-property-tax

When Are Property Taxes Due in Santa Clara?

Secured property taxes: first installment due November 1 and last day to pay without penalties December 10; second installment due February 1 and last day to pay without penalties April 10. If December 10 or April 10 falls on a weekend or County of Santa Clara holiday, the delinquent date is extended to the next business day. Annual secured property taxes are paid in two installments: first installment due November 1 and second installment due February 1.

This is not the same as the assessment appeal deadline above. The appeal deadline is your window to contest your assessed value; the payment due date is when the resulting tax bill must be paid. Missing one does not affect the other, but missing either has real consequences — one forfeits your right to appeal for the year, the other can trigger penalties and interest.

Source: https://dtac.santaclaracounty.gov/taxes/obtain-secured-property-tax-information

Property Tax Exemptions in Santa Clara

• Homeowners' Exemption — Property owner, co-owner, or purchaser named in a contract of sale who owns and occupies the dwelling as their principal place of residence as of 12:01 a.m. January 1; rental, vacant, vacation, or secondary homes do not qualify.. Up to $7,000 off the dwelling's assessed value, resulting in about $70 to $80 annual property-tax savings. Yes, claim form required; once granted, it remains in effect until the owner is no longer eligible, the residence is no longer the principal residence, or title changes. Apply by File by 5:00 p.m. February 15 for the full exemption; claims filed February 16 through 5:00 p.m. December 10 receive 80% of the exemption.. (Source: https://asr.santaclaracounty.gov/tax-savings/exemptions/homeowners)
• Disabled Veterans' Exemption — Principal residence of a qualified veteran rated 100% disabled due to service-connected injury or disease, or compensated at the 100% rate due to unemployability; an unmarried surviving spouse of a qualified veteran may also qualify.. For the January 1, 2026 lien date: basic exemption $180,671; low-income exemption $271,009 with household income limit $81,131. Yes. Initial claim required; basic exemption does not require annual refiling after approval, while the low-income exemption requires annual filing. Apply by Initial claim generally must be filed within 90 days of the qualifying event or by the January 1 following the qualifying event, whichever is later; low-income annual claims filed January 1-February 15 receive 100% of the exemption.. (Source: https://boe.ca.gov/proptaxes/dv_exemption.htm?mod=article_inline ; https://boe.ca.gov/proptaxes/pdf/lta25014.pdf)
• Veterans' Exemption — Qualified veteran currently serving or honorably discharged, or qualifying unmarried surviving spouse or parent of a deceased veteran, who lived in California on the January 1 lien date and meets BOE property-value limits.. Exempts property value up to $4,000. Yes, claim must be filed each year with the county assessor where the property is located. Apply by File by February 15 to receive the full 100% exemption for property owned on the January 1 lien date.. (Source: https://boe.ca.gov/proptaxes/veterans_exemption.htm)
• Proposition 19 Base-Year Value Transfer for Age 55+ Homeowners — Eligible homeowner, or spouse residing with the claimant, age 55 or older when the original primary residence is sold, with a replacement residence purchased or newly constructed within two years before or after the sale; one transaction must occur on or after April 1, 2021.. Allows transfer of the original primary residence's property-tax base-year value to a replacement primary residence anywhere in California; if the replacement home is greater in value, the difference in market values is added to the transferred base-year value. Yes, application to the assessor where the replacement property is located; Santa Clara County lists a non-refundable processing fee. Apply by File within three years from the date the replacement residence is purchased or newly constructed for full relief; late claims receive prospective relief only.. (Source: https://asr.santaclaracounty.gov/tax-savings/transferring-your-assessed-value/senior-citizen-over-age-55-outside-county)
• Disaster / Calamity Relief — Property with $10,000 or more in damage from a misfortune or calamity not caused by the property owner or party responsible for the taxes; typical qualifying events include fire, flood, or earthquake damage.. Reassessment to reflect the property's damaged condition, with a subsequent reduction or partial refund of the current year's taxes; after like-or-similar repair, the previous base-year value is retained. Yes, application for reduced assessment required. Apply by Within twelve months of the date of the disaster.. (Source: https://asr.santaclaracounty.gov/tax-savings/tax-reductions/disaster-relief)
• California Property Tax Postponement Program — Homeowners who are at least 62, blind, or disabled, own and occupy the property as a principal residence, have household income of $55,181 or less, have at least 40% equity, and do not have a reverse mortgage, subject to program requirements.. Defers current-year property taxes on the principal residence; the deferment is secured by a lien and must be repaid with interest. Yes, apply to the California State Controller's Office each year postponement is desired. Apply by For the 2025-26 program, filing period opened October 1, 2025 and closed February 10, 2026; no later filing date was confirmed on the official source reviewed.. (Source: https://www.sco.ca.gov/ardtax_prop_tax_postponement.html)

How to Look Up Your Property Record in Santa Clara

You can look up your property's official record at https://asr.santaclaracounty.gov/online-services/property-search/real-property. Official Santa Clara County Assessor real-property search for parcels by simple address search, advanced address search, or APN; the Assessor also provides a separate assessed-value lookup for residential owners using APN and PIN.