Lower your Riverside County property taxes
The Riverside County Assessor-County Clerk-Recorder sets your value each January 1, and Prop 8 lets it drop below your Prop 13 base when the market falls. The Assessor reviews homes that were reduced last year, but owners outside that review have to ask. 30% of first-year savings, only if you save.
What a too-high value costs you
If your home is assessed at $600,000 but similar homes point to about $555,000, you're taxed on $45,000 too much. At a 1.17% rate that's about $524 a year. Our fee would be $157; you'd keep $367.
What gets missed in Riverside County
- Not in the Assessor's review. The Assessor rechecks homes reduced last year. A home that was never reduced stays at its Prop 13 value unless the owner files.
- Two separate deadlines. The free Prop 8 request closes November 1 (November 2 this year). The formal appeal runs to November 30. A Prop 8 request does not extend the appeal deadline.
- Condition. The roll can't see an original kitchen, a worn roof or a failing pool.
- Wrong comparisons. A newer tract a few miles away is not the same market as an older neighborhood.
Insider tip: Start with the Assessor's free online Decline-in-Value application. If you also file a formal appeal, the $30 per-parcel fee is refunded only if the Board changes your value in your favor after a full hearing.
Reviewed by the founder
Julien reviews every Riverside County case personally and tells you the value we’ll ask for before anything is filed.
Get my free reviewRiverside County calendar
| January 1 | Valuation date for the 2027–28 roll |
| March 31 | Last day for sales that can support a January 1 value (90 days) |
| July | Assessed values posted; Prop 8 results mailed for requests received after July 1 |
| July 2 – November 30, 2027 | Formal appeal window with the Clerk of the Board (Form BOE-305-AH, $30 per parcel) |
| November 1 | Deadline for the Assessor's free Decline-in-Value (Prop 8) application (next business day if a weekend) |
| Within 2 years of filing | Assessment Appeals Board must decide unless you agree to extend |
| December 10, 2027 / April 10, 2028 | First / second tax installment delinquent if unpaid |
Sources: Riverside County Assessor — Decline in Value (Prop 8) · Riverside County Clerk of the Board — Assessment Appeals · Riverside County AAB local rules (filing fee) · BOE LTA 2026/023 — filing periods. Dates are checked each year; confirm with the county for your property.
Exemptions to check
The homeowners' exemption takes $7,000 off the taxable value of your main home; file Form BOE-266 by February 15 for the full amount. Disabled veterans may qualify for a much larger exemption, and Prop 19 lets owners 55 and over move their tax base. We check your exemptions free at sign-up.
Riverside County questions
Where do I file a formal appeal in Riverside County?
With the Clerk of the Board's Assessment Appeals Division, on Form BOE-305-AH, online or by mail. The fee is $30 per parcel, refunded if you prevail. A fee waiver is available based on income or public assistance.
Is the Assessor's Prop 8 review free?
Yes. The Request for Review is an informal process with no filing fee.
I missed November 30. Now what?
Sign up anyway. The next Prop 8 request can be filed for the January 1, 2027 value, and the next appeal window opens July 2, 2027.