AppealDesk

Riverside County Property Tax Appeal — California

Rob HartleyRob Hartley·Updated February 15, 2026

Riverside County, California, with its county seat in the city of Riverside, encompasses major population centers including Corona, Moreno Valley, Murrieta, Temecula, and Palm Desert. As the fourth-largest county in California by both landmass and population, with nearly 2.4 million residents across 7,303 square miles and 28 incorporated cities, property tax appeals matter significantly here due to the county's above-average tax burden. The county's median home value of $601,600 is lower than California's median of $759,500, yet the effective property tax rate of 0.75% results in a median annual property tax bill of $4,526, which is about $2,100 higher than the national median of $2,400.

Notable cities: Riverside, Corona, Moreno Valley, Murrieta, Temecula, Palm Desert

Median Home

$601,600

Tax Rate

0.75%

Annual Tax

$4,526

Population

2.4 million

2026 Appeal Deadline: November 30, 2026

For regular assessments, the appeal filing period runs from July 2 through November 30 each year. For supplemental and escape assessments, appeals must be filed within 60 days from the mailing date or postmark date of the notice.

Property in Riverside County, California — local tax assessment and appeal guide

How Riverside County Assesses Property

100%of market value

Assessed by: Riverside County Assessor-County Clerk-Recorder

Assessment cycle: annual

Notices typically mailed: Spring (typically by mid-May)

In Riverside County, properties are assessed at 100% of their market value as of January 1st each year, in accordance with California law. If your home's market value is $601,600 (the county median), at California's 100% assessment ratio your assessed value would be $601,600, resulting in approximately $4,512 in annual taxes at the county's effective rate of 0.75%. This assessed value can increase by up to 2% annually under Proposition 13, unless the property's market value falls below its Proposition 13 factored value.

The Appeal Process

Appeals are heard by the Assessment Appeals Board. The Appeals Board consists of impartial citizens appointed by the County Board of Supervisors who will review evidence from both you and the Assessor to determine fair market value. Hearings typically last 15-30 minutes.

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Step 1: Contact the Assessor's office at(951) 955-6200 to discuss your property value concerns informally before filing an appeal

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Step 2: Obtain the Assessment Appeal Application (BOE-305-AH) from the Riverside County Clerk of the Board website or office

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Step 3: Complete the application and gather supporting evidence including comparable sales data, property appraisals, and photographs showing property condition

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Step 4: Submit your application during the filing period (July 2-November 30 for regular assessments) along with any supporting documentation

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Step 5: Attend your scheduled hearing before the Assessment Appeals Board, where you'll present evidence and argue your case

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Step 6: If unsatisfied with the Appeals Board decision, you may file an action in Superior Court within 6 months of the board's final determination

Required form: Assessment Appeal Application (BOE-305-AH)

Filing Methods

online:File through the Riverside County Clerk of the Board website at https://rivcocob.org
mail:Mail to Assessment Appeals Board, P.O. Box 1147, Riverside, CA 92502-1147
in-person:Submit at 4080 Lemon Street, 1st Floor, Riverside, CA 92501

Evidence to Bring

Recent comparable sales in your areaProfessional property appraisalsPhotographs of property conditionRepair estimatesProperty tax bills from previous years

Riverside County Assessor Contact

Riverside County Assessor-County Clerk-Recorder

Phone: (951) 955-6200 or(800) 746-1544

Address: 4080 Lemon Street, Riverside, CA 92501

Website: https://www.rivcoacr.org/

Online Portal: https://ca-riverside-acr.publicaccessnow.com/

Hours: Phone Hours: 8:00 am – 5:00 pm Monday–Friday

Tax Exemptions in Riverside County

Homeowners' Exemption

$7,000 reduction in assessed value

Reduces the taxable value of your principal residence by $7,000

Eligibility: Must be the owner-occupied principal residence as of January 1stDeadline: February 15 for full exemption; 80% available if filed between February 16 and December 10

Disabled Veterans' Exemption

Varies based on disability rating and income level

Provides property tax relief for qualifying disabled veterans

Eligibility: Veterans with service-connected disabilities rated by the VADeadline: February 15 annually

Proposition 19 Base Year Value Transfer

Maintains lower property tax base from original home

Allows homeowners 55+ or severely disabled to transfer their property tax base to a replacement home

Eligibility: Age 55+, severely disabled, or victims of wildfire/natural disasterDeadline: Within 3 years of selling original residence

Decline in Value (Proposition 8)

Difference between market value and Prop 13 value

Temporary reduction when current market value falls below Proposition 13 factored base value

Eligibility: Any property where market value has declined below factored base valueDeadline: November 1, 2026 for Decline in Value Application

Official Resources

Riverside County Assessor-County Clerk-Recorder Official Website →

Access property information, file exemptions, and learn about assessment procedures directly from the county assessor's office.

Riverside County Clerk of the Board - Assessment Appeals Division →

File assessment appeals online, download forms, and access information about the appeals process and hearing procedures.

Riverside County Property Tax Payment Portal →

Pay property taxes online, check payment status, and view tax bills through the Treasurer-Tax Collector's secure portal.

California State Board of Equalization - Property Tax Resources →

Access state-level property tax information, publications, and guidance on exemptions and assessment appeals procedures.

Check Your Riverside County Assessment

Enter your address to see if your Riverside County property is overassessed.

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Riverside County?
The deadline to appeal your regular property tax assessment in Riverside County is November 30, 2026. The filing period opens on July 2 and runs through November 30 each year. However, if you receive a supplemental or escape assessment, you must file your appeal within 60 days of the mailing date shown on the notice. It's important to note that you should still pay your property taxes on time even while your appeal is pending to avoid penalties and interest charges.
How do I file a property tax appeal in Riverside County online?
To file a property tax appeal online in Riverside County, visit the Clerk of the Board's website at https://rivcocob.org and complete the Assessment Appeal Application (BOE-305-AH). You'll need your annual assessment letter from the Assessor, information about your property value, and any supporting documentation ready to upload. The online system provides step-by-step instructions for each section of the form. After submitting online, you'll receive confirmation of your filing and information about your hearing date.
What is the homestead exemption worth in Riverside County?
The homeowners' exemption in Riverside County provides a $7,000 reduction in your property's assessed value, which saves approximately $70 annually on your property tax bill at the typical tax rate. To qualify, the property must be your principal residence as of January 1st. You only need to file once with form BOE-266, and the exemption continues automatically as long as you own and occupy the home. If you file by February 15, you receive the full exemption; filing between February 16 and December 10 provides 80% of the exemption.
What happens at an Assessment Appeals Board hearing in Riverside County?
At your Riverside County Assessment Appeals Board hearing, you'll present your case to a panel of impartial citizens appointed by the Board of Supervisors. The hearing typically lasts 15-30 minutes, during which you'll explain why you believe your property is over-assessed and present evidence such as comparable sales, appraisals, or photos of property condition. The Assessor's office will also present their valuation evidence. The board will review all evidence and make a determination about your property's fair market value. You'll receive written notification of the board's decision, and if your appeal is successful, you'll receive a refund for any overpaid taxes.
How much can I save by appealing my property taxes in Riverside County?
The amount you can save depends on how much your property is over-assessed compared to its true market value. With Riverside County's median home value of $601,600 and effective tax rate of 0.75%, even a 10% reduction in assessed value could save you approximately $451 per year. Many property owners discover their homes are assessed 10-25% above market value, especially during market downturns. The Assessor reviews properties annually and may grant temporary reductions under Proposition 8 if your property's market value falls below its Proposition 13 factored base value.
What evidence do I need for a Riverside County property tax appeal?
For a successful property tax appeal in Riverside County, gather recent sales data of comparable properties in your neighborhood (typically within the last 6-12 months), a professional appraisal if available, photographs documenting any property defects or needed repairs, contractor estimates for major repairs, and your property tax bills from previous years. The most compelling evidence is recent sales of similar homes in your area that sold for less than your assessed value. Make sure to organize all documentation clearly and bring multiple copies to your hearing before the Assessment Appeals Board.

For state-wide appeal information including California's assessment ratio and deadlines, see our California Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More California Counties

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← All California property tax appeal info

Sources: https://countytreasurer.org/current-secured-property-tax-information | https://www.rivcoacr.org/decline-in-value-proposition-8 | https://rivcocob.org/assessment-appeals-division | https://smartasset.com/taxes/riverside-county-california-property-tax-calculator | https://www.rivcoacr.org/ | https://www.rivcoacr.org/HomeownersExemption

Last verified: 2026-02-15