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California · County guide

Riverside County property tax appeal

A Riverside County property tax appeal is an application to the Riverside County Assessment Appeals Board. For 2026 the regular period is July 2 to November 30, 2026. The county's instructions say to mail the application with a $30 fee to the Clerk of the Board.

This season

Next deadline
Nov 30, 2026
Open now
Riverside County Assessment Appeals Board

Opens Jul 2, 2026Closes Nov 30, 2026

Source: Letter To Assessors No. 2026/023: County Assessment Appeals Filing Period for 2026 (BOE, June 2, 2026)Last checked

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Filing fee
$30, payable to the County of Riverside
How to file
By mail to the Clerk of the Board
Office address
Clerk of the Board, P.O. Box 1628, Riverside, CA 92502-1628 · 951-955-9688
Our coverage
Free check available
  • Independent guide — not affiliated with Riverside County or any government agency.
Last updated
October 1, 2026
Sources last checked
October 1, 2026
Status
Verified guide

How we verify facts

When and where do I file a Riverside County property tax appeal?

Who hears a Riverside County appeal?

One stage. We are not affiliated with this office.

Who hears it: Riverside County Assessment Appeals Board

Filing: appeal

Open now

Where is the Riverside County office?

Riverside County Assessment Appeals Board[5]

Address
Clerk of the Board, P.O. Box 1628, Riverside, CA 92502-1628
Hours
Monday-Friday 8:00 a.m.-5:00 p.m.

Assessor[8]

Riverside County Assessor-County Clerk-Recorder (Assessor)

We are not affiliated with this office. Hours can change, so call before you visit.

Which Riverside County filing windows are coming up?

Riverside County filing windows
ClosesAreaWho hears itStatus
Nov 30, 2026CountywideRiverside County Assessment Appeals Board · Official source · Last checked Sep 29, 2026Open now

When were past Riverside County deadlines?

Past Riverside County filing windows
Tax yearWindowOffice
2025Closed December 1, 2025Riverside County Assessment Appeals Board
2024Closed December 2, 2024Riverside County Assessment Appeals Board
2023Closed November 30, 2023Riverside County Assessment Appeals Board

How do I file a Riverside County appeal?

Filing period
July 2 through November 30, when the Assessor doesn't mail value notices
Filing fee
$30, payable to the County of Riverside
How to file
Mail the completed application and fee to the Clerk of the Board, P.O. Box 1628, Riverside, CA 92502

When is the deadline to appeal a property tax assessment in Riverside County?

The soonest deadline we list: Riverside County, Riverside County Assessment Appeals Board — Closes November 30, 2026.

When a filing counts as on timeRiverside County Assessment Appeals Board
Riverside County's appeals board rules treat a mailed application as on time if it is postmarked by the last day of the filing period.[1]
Deadline detailRiverside County Assessment Appeals Board · Filing period
Riverside County's regular filing dates are July 2 through November 30 when the assessor doesn't mail value notices.[2]

Who decides a property tax appeal in Riverside County?

Riverside County Assessment Appeals Board: A Riverside County Appeals Board decision is final and not reheard; the owner or the Assessor may bring a timely superior court action. Riverside County Assessment Appeals Board: In Riverside County an assessment appeal is filed on the Application for Changed Assessment; the Clerk of the Board publishes instructions for completing it.

Appeal stepsRiverside County Assessment Appeals Board
A Riverside County Appeals Board decision is final and not reheard; the owner or the Assessor may bring a timely superior court action.[2]
What the appeal is calledRiverside County Assessment Appeals Board
In Riverside County an assessment appeal is filed on the Application for Changed Assessment; the Clerk of the Board publishes instructions for completing it.[2]

How do I file a property tax appeal in Riverside County?

Riverside County Assessment Appeals Board: Riverside County's instructions say to mail the completed application and fee to the Clerk of the Board, P.O. Box 1628, Riverside, CA 92502. Riverside County Assessment Appeals Board: Riverside County publishes its own Assessment Appeal Application (BOE-305-AH) to be mailed with the fee to the Clerk of the Board, P.O. Box 1628, Riverside.

How to fileRiverside County Assessment Appeals Board
Riverside County's instructions say to mail the completed application and fee to the Clerk of the Board, P.O. Box 1628, Riverside, CA 92502.[2]
FormsRiverside County Assessment Appeals Board
Riverside County publishes its own Assessment Appeal Application (BOE-305-AH) to be mailed with the fee to the Clerk of the Board, P.O. Box 1628, Riverside.[3]
Filing feeRiverside County Assessment Appeals Board
Riverside County's appeal instructions list a $30 filing fee, payable to the County of Riverside.[2]
Who may fileRiverside County Assessment Appeals Board
If a Riverside County applicant uses an agent, the Agent Authorization section must be completed or a written authorization attached.[2]
Informal reviewRiverside County Assessment Appeals Board
In Riverside County you can file a Decline-in-Value Reassessment Application (Prop. 8) with the Assessor until November 1, 2026.[4]

Upcoming appeal deadlines in every county we track

What evidence counts in Riverside County, and can the value go up?

Can the Riverside County appeals board raise my value?

Yes. Based on the evidence, the Riverside County Assessment Appeals Board, like every California appeals board, can raise, lower or keep an assessment.

What evidence can I use in Riverside County?

Riverside County Assessment Appeals Board: Riverside County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value. Riverside County Assessment Appeals Board · Sale dates: Riverside County appeal hearings cannot consider a comparable sale more than 90 days after the valuation date; bring at least seven copies of your comps.

Evidence acceptedRiverside County Assessment Appeals Board
Riverside County's instructions ask for comparable sales, cost and income data, where relevant, to support the owner's opinion of value.[2]
Evidence ruleRiverside County Assessment Appeals Board · Sale dates
Riverside County appeal hearings cannot consider a comparable sale more than 90 days after the valuation date; bring at least seven copies of your comps.[5]

Can my assessment go up if I appeal in Riverside County?

Riverside County Assessment Appeals Board: Riverside County's application instructions say the Appeals Board can increase as well as decrease an assessment, based on the evidence.

Can the value go up?Riverside County Assessment Appeals Board
Riverside County's application instructions say the Appeals Board can increase as well as decrease an assessment, based on the evidence.[2]

Which exemptions can lower my bill without an appeal?

Riverside County owners living in their home on January 1 may get the Homeowners' Exemption: up to $7,000 off the assessed value, about $70 a year.

Homeowner exemption
Riverside County owners living in their home on January 1 may get the Homeowners' Exemption: up to $7,000 off the assessed value, about $70 a year.[6]

What do Riverside County property taxes and assessments look like?

Figures from public records and the Census, each with its source. They describe the county's homes as a group, not the value of any one home.

How much could a lower assessment save on Riverside County property taxes?

Tax rate used: 1.173% of assessed value (county average, fiscal 2024-25).

How much could a lower assessment save on Riverside County property taxes?
ExampleTax saved
$10,000 less assessed value$117 a year
10% less on a home assessed at $266,091 (the county's 25th percentile)$312 a year
10% less on a home assessed at $422,010 (the county's median)$495 a year
10% less on a home assessed at $595,542 (the county's 75th percentile)$699 a year

These are examples: the tax rate times a lower assessed value. Exemptions, credits, caps and phase-ins can make the real change smaller. This is not a prediction for any home. Rate source: BOE Annual Report 2024-25, Table 14: average tax rate by county (Property Tax Allocations, BOE Open Data Portal).

What do homeowners in Riverside County pay in property tax?

The median owner-occupied home in Riverside County was worth $557,300, and the median property tax its owners paid was $4,348 a year, according to the Census Bureau's American Community Survey.

Median home value
$557,300
Margin of error ±$2,765.
Median property tax paid per year
$4,348
Margin of error ±$38.
Median tax as a share of median value
0.78%
A ratio of two medians, not a tax rate. Your own bill depends on your assessment and local levies.
Owner-occupied homes
535,986
Margin of error ±3,538.

These are survey estimates of what owners reported about their own homes. They are not assessed values, not tax rates, and not an opinion of what any home is worth.

They cannot tell you whether your own assessment is fair. That takes a comparison with similar homes, which we offer only in counties we have researched.

From the county's assessment and appeal records

Homes in the county's assessment records
629,985
Median assessed value
$422,010
Middle half of assessed values
$266,091 to $595,542

Source: The county's open assessment data, aggregated by us (tax year 2026 final values). Our calculation from public records; not an opinion of any home's value.

How Riverside County home assessments are spread

Assessed values of 629,985 homes in the property classes our free check covers (SFR, SFR2, CND, R24, MHF), tax year 2026 final values. Half are between $266,091 and $595,542; the median is $422,010. The last bar holds everything above it.Source: Assessment records from the county's open data (tax year 2026 final values), retrieved Sep 27, 2026; our calculation.

Median home value: Riverside County compared

  1. Riverside County$557,300
  2. Typical California county$481,100
  3. Typical US county$185,300

Riverside County $557,300; Typical California county $481,100; Typical US county $185,300

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 58 in California and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25077.

Median property tax paid: Riverside County compared

  1. Riverside County$4,348
  2. Typical California county$3,294
  3. Typical US county$1,619

Riverside County $4,348 a year; Typical California county $3,294 a year; Typical US county $1,619 a year

Census survey medians for owner-occupied homes. "Typical" is the middle county of the 58 in California and of all US counties.Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25103.

Median home assessment by map book

  1. Map book 771$3,094,556
  2. Map book 759$2,912,288
  3. Map book 505$1,716,045
  4. Map book 512$1,632,932
  5. Map book 939$1,423,379
  6. Map book 777$1,417,787
  7. Map book 690$1,320,691
  8. Map book 513$1,316,266
  9. Map book 845$122,127
  10. Map book 723$115,366
  11. Map book 836$113,492
  12. Map book 666$108,645
  13. Map book 757$107,229
  14. Map book 721$100,908
  15. Map book 848$97,574
  16. Map book 872$42,836

The 8 highest and 8 lowest of 526.

Median assessed value by map book: highest Map book 771 ($3,094,556), lowest Map book 872 ($42,836).

Median assessed value of homes in the property classes our free check covers (SFR, SFR2, CND, R24, MHF) for each map book with at least 50 such homes, tax year 2026 final values.Source: Assessment records from the county's open data (tax year 2026 final values), retrieved Sep 27, 2026; our calculation.

Riverside County filing windows on a calendar

  1. Riverside County Assessment Appeals BoardNov 30, 2026 · Open now

The dashed line marks today.

Riverside County Assessment Appeals Board: Nov 30, 2026

Each bar is a filing window from its opening day to its last day. Forecasts show the expected closing range and are not official dates.Source: the official calendars and rules cited in the sources list below.

How often is property reassessed in Riverside County?

Riverside County reappraises real property only when ownership changes or new construction takes place; otherwise assessments rise at most 2% a year. Riverside County measures market value as of the January 1 lien date.

Reassessment cycle
Riverside County reappraises real property only when ownership changes or new construction takes place; otherwise assessments rise at most 2% a year.[7]
Valuation date
Riverside County measures market value as of the January 1 lien date.[4]
Level of assessmentDecline in value
The Riverside County Assessor enrolls the lower of the factored base year value and the market value on the January 1 lien date; the reduction is temporary and reviewed yearly.[4]

Homes in Riverside County

From the Census Bureau's American Community Survey: how old the homes are, what kind they are, what owners say they are worth and the property taxes they pay. These figures describe all homes together, not any one home.

Median year built
1990
All housing units, owned and rented
Single-family houses, detached or attached
75%
of 869,414 housing units
Owned homes with a mortgage or similar loan
69%
of 535,986 owner-occupied homes

Home values reported by owners

  1. Less than $50,0004%
  2. $50,000 to $99,9993%
  3. $100,000 to $199,9993%
  4. $200,000 to $299,9995%
  5. $300,000 to $399,99910%
  6. $400,000 to $499,99917%
  7. $500,000 to $749,99937%
  8. $750,000 to $999,99915%
  9. $1,000,000 to $1,999,9995%
  10. $2,000,000 or more1%

Home values reported by owners in Riverside County: Less than $50,000 4%; $50,000 to $99,999 3%; $100,000 to $199,999 3%; $200,000 to $299,999 5%; $300,000 to $399,999 10%; $400,000 to $499,999 17%; $500,000 to $749,999 37%; $750,000 to $999,999 15%; $1,000,000 to $1,999,999 5%; $2,000,000 or more 1%.

Share of owner-occupied homes in each value range. Owners give this value in the survey; it is not the assessed value.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25075.

Property taxes owners pay a year

  1. No real estate taxes4%
  2. Less than $8006%
  3. $800 to $1,4996%
  4. $1,500 to $1,9996%
  5. $2,000 to $2,99913%
  6. $3,000 or more65%

Property taxes owners pay a year in Riverside County: No real estate taxes 4%; Less than $800 6%; $800 to $1,499 6%; $1,500 to $1,999 6%; $2,000 to $2,999 13%; $3,000 or more 65%.

Share of owner-occupied homes by the real estate taxes paid in a year, with or without a mortgage.Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates, table B25102.

Source: U.S. Census Bureau, American Community Survey (2020–2024 5-year estimates, tables B25075, B25102, B25035, B25024 and B25081), retrieved Oct 1, 2026. Survey estimates have a margin of error.

More questions about Riverside County property tax appeals

When is the Riverside County property tax appeal deadline?

The Riverside County Assessment Appeals Board window closes November 30, 2026.[9][10]

Is there a fee to file a property tax appeal in Riverside County?

Riverside County's appeal instructions list a $30 filing fee, payable to the County of Riverside.[2]

Where do I file an assessment appeal in Riverside County?

Riverside County's instructions say to mail the completed application and fee to the Clerk of the Board, P.O. Box 1628, Riverside, CA 92502.[2]

Can my assessed value go up if I appeal in Riverside County?

Riverside County's application instructions say the Appeals Board can increase as well as decrease an assessment, based on the evidence.[2]

What other rules apply in Riverside County?

Riverside County Assessment Appeals Board: Filing a Riverside County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.

Paying the tax while you appealRiverside County Assessment Appeals Board
Filing a Riverside County appeal does not postpone the tax bill: taxes are still due by the dates on the bill.[2]

Property tax guides for Riverside County homeowners

Counties next to Riverside County

California property tax appeals: all counties

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Where do these facts come from?

  1. [1]Rules of Notice and Procedure of the Assessment Appeals Boards of the County of Riverside (PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
  2. [2]How to Complete an Assessment Appeal Application - Riverside County Assessment Appeals Division (PDF, 2025-03)Official guide or FAQ · last checked Sep 29, 2026
  3. [3]Assessment Appeal Application (BOE-305-AH) 2024-2025 (Riverside County, PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
  4. [4]Riverside County Assessor - County Clerk - Recorder - Decline in Value - Proposition 8Official guide or FAQ · last checked Sep 29, 2026
  5. [5]How to Prepare for your Hearing (Riverside County Clerk of the Board, Assessment Appeals, rev. 8/2024, PDF)Official notice, form, calendar or rules · last checked Sep 30, 2026
  6. [6]Homeowners' Exemption | Riverside County Assessor-County Clerk-RecorderOfficial guide or FAQ · last checked Sep 29, 2026
  7. [7]Proposition 13 | Riverside County Assessor-County Clerk-RecorderOfficial guide or FAQ · last checked Sep 29, 2026
  8. [8]Riverside County Assessor - County Clerk - Recorder - Home PageOfficial guide or FAQ · last checked Oct 1, 2026
  9. [9]Letter To Assessors No. 2026/023: County Assessment Appeals Filing Period for 2026 (BOE, June 2, 2026)Official notice, form, calendar or rules · last checked Sep 25, 2026
  10. [10]Publication 30: Residential Property Assessment Appeals (California State Board of Equalization, February 2020)Official guide or FAQ · last checked Sep 25, 2026
  11. [11]Letter To Assessors No. 2025/020: County Assessment Appeals Filing Period for 2025 (BOE, July 7, 2025)Official notice, form, calendar or rules · last checked Oct 1, 2026
  12. [12]Letter To Assessors No. 2024/022: County Assessment Appeals Filing Period for 2024 (BOE, June 25, 2024)Official notice, form, calendar or rules · last checked Oct 1, 2026
  13. [13]Letter To Assessors No. 2023/023: County Assessment Appeals Filing Period for 2023 (BOE, June 22, 2023)Official notice, form, calendar or rules · last checked Oct 1, 2026
  14. 14.County open data: rivco assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  15. 15.County open data: rivco assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  16. 16.County open data: rivco assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  17. 17.County open data: rivco assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  18. 18.County open data: rivco assessmentsRetrieved Sep 27, 2026; aggregated by us for the charts above.
  19. 19.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25077: Median value (dollars), owner-occupied housing units — Riverside County, California
  20. 20.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25103: Median real estate taxes paid, owner-occupied housing units — Riverside County, California
  21. 21.U.S. Census Bureau, ACS 2020–2024 5-year estimates, table B25003: Tenure (owner- and renter-occupied housing units) — Riverside County, California

Data credits: Census ACS (public domain) · Census county adjacency (public domain)

Not affiliated with Riverside County or any government agency. Not legal advice. Not an appraisal.

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