In Riverside County, homeowners who think their properties are worth less than the county's assessed value for 2026 may still be able to reduce their property taxes, but they need to track two separate November deadlines.

Here's what to know

According to Patch, to be considered for possible temporary relief under Proposition 8, property owners must file a Decline-in-Value Reassessment Application, also called a Request for Review, by Nov. 2. The Riverside County Assessor-Clerk-Recorder uses that filing to determine whether a property's Jan. 1 market value was below its assessed value.

Anyone seeking a formal challenge must submit an Assessment Appeal Application separately to the county Clerk of the Board by Nov. 30. County officials said the two filings are different processes, and submitting a request to the assessor does not replace or extend the appeal deadline.

The assessor automatically includes properties that received a decline-in-value reassessment in its annual review. Those owners only need to file a new application if they disagree with the resulting value and want another review.

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More background

Because Nov. 1 falls on a Sunday in 2026, the usual filing deadline shifts to the next business day, Nov. 2.

The temporary reduction is tied specifically to a property's fair market value as of Jan. 1. The county is not broadly reconsidering taxes; it is comparing the current assessed value with the market value on that date to determine whether Proposition 8 relief applies.

Owners still must pay property tax bills as issued while a review or appeal is pending. If a reduction is granted later, the county would handle it through an adjustment or refund.

What can be done?

Homeowners who believe their Jan. 1 market value was lower than their assessed value can begin by filing the assessor's Decline-in-Value Reassessment Application by Nov. 2. More details on Proposition 8, who qualifies, and how the review works are posted on the Riverside County Assessor's Decline in Value webpage.

Homeowners who want to preserve the right to formally challenge the assessment should also file the Assessment Appeal Application with the Clerk of the Board by Nov. 30. Riverside County said an unfinished Request for Review does not extend that window, even though the assessor expects to complete most reviews well before the Nov. 30 appeal deadline.

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Where can I learn more?

Property tax questions often raise other homeowner concerns, from utility bills and insurance to rent protections and local disputes.

• In Palo Alto, assessed values rose 5.47% as property tax appeals climbed.

• In Jackson County, Missouri, tax credits for overpayments moved ahead despite a school lawsuit.

• In Pittsburgh, a homeowner sought answers after a property destruction notice targeted a wild garden.

• Across California, homeowners were left scrambling as State Farm slashed policies and raised rates.

• In Los Angeles County, post-fire rent-gouging protections expired as families feared 50% hikes.

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