THIS ASSESSMENT REDUCTION FILING SERVICE IS NOT ASSOCIATED WITH ANY GOVERNMENT AGENCY. IF YOU DISAGREE WITH THE ASSESSED VALUE OF YOUR PROPERTY, YOU HAVE THE RIGHT TO AN INFORMAL ASSESSMENT REVIEW, AT NO COST, BY CONTACTING THE ASSESSOR’S OFFICE DIRECTLY. IF YOU AND THE ASSESSOR CANNOT AGREE TO THE VALUE OF THE PROPERTY OR IF YOU DO NOT WISH TO CONTACT THE ASSESSOR YOU CAN OBTAIN AND FILE AN APPLICATION FOR CHANGED ASSESSMENT WITH THE COUNTY BOARD OF EQUALIZATION OR ASSESSMENT APPEALS BOARD ON YOUR OWN BEHALF. AN APPEALS BOARD HAS THE AUTHORITY TO RAISE PROPERTY VALUES (BUT IN NO CASE HIGHER THAN THE PROPOSITION 13 PROTECTED VALUE) AS WELL AS TO LOWER PROPERTY VALUES.
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California homes · independent review

2026 property assessment review

Pay tax on what your home is really worth.

A clear, independent check—before you decide to appeal.

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A hand-bound property evidence package with review notes

Look beyond the number

See the evidence.
Make your call.

Comparable salesProperty factsFiling guidanceProp 8 Informal Free · Formal Appeal $45
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Two owner-filed packages

Prop 8 Informal Request Package Free. Formal Appeal Package $45.

Valuvia prepares the prop8 informal request form or formal appeal form for you. You review, sign, and file it. After Valuvia verifies the county receipt, the Prop 8 package unlocks free and the Formal Appeal package unlocks after you pay the service fee. County formal appeal filing fees are separate; county prop8 informal review is free.

Five steps to complete your owner-filed prop8 informal request or formal appeal:

  1. Choose the Prop 8 Informal and/or Formal Appeal package, then verify the property, APN, assessment year, and owner information.
  2. Review the Valuvia prepared county form. Print and sign it; for a formal appeal, include the county filing fee.
  3. Mail the signed form using trackable delivery. Keep a complete copy and meet the county deadline (the county’s published formal appeal filing window). You can also choose to file online for faster confirmation if your county publishes an official filing portal.
  4. Upload the county filing receipt by clicking the My order link in your order emails, or go to My orders (www.valuvia.net/account). Mailing proof alone is not a county filing receipt.
  5. After Valuvia verifies the receipt, the Prop 8 Informal Request Package unlocks free; the Formal Appeal Package unlocks after you pay the service fee.

Valuvia does not file, sign, mail, or represent you.

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Frequently asked questions

What does Valuvia provide?

Valuvia prepares owner-filed property-assessment review documents and supporting evidence. Valuvia is not a county agency, law firm, tax adviser, appraiser, or filing representative.

Which packages are available?

Eligible Riverside, Los Angeles, and San Diego County homeowners may choose the free Prop 8 Informal Request Package (Riverside and Los Angeles informal packets today) or the $45 Formal Appeal Package.

When do I pay Valuvia?

Not before filing. First, download the county form, review, sign, and file it yourself. Upload the county filing receipt; after Valuvia verifies it, pay to unlock the remaining documents.

Does the county charge a filing fee?

Informal assessor review is available directly from the county at no cost. Formal appeals may require a separate county fee. Check the current official county instructions before filing.

Does Valuvia file for me?

No. You review, sign, and file online or by paper mail. Online filing usually gives faster confirmation; mail is simpler but slower and can be delayed or lost.

What filing proof should I upload?

Upload the county receipt or confirmation showing the request or application was filed. A postal receipt alone proves mailing, not county filing.

Is an informal Prop 8 request the same as a formal appeal?

No. The assessor handles an informal request; the county assessment appeals office handles a formal appeal. An informal request generally does not preserve the formal deadline.

Is a reduction guaranteed?

No. The county decides. A formal appeals board may lower, leave unchanged, or raise a value subject to California law and Proposition 13 limits. Estimated savings is the best possible figure from the numbers shown, not a guaranteed result. Valuvia is not responsible for the county’s decision or for tax you still owe.

How do I reach a person?

Call Valuvia Customer Care at (888) 805-7076, email support@valuvia.net, or use Send a support email on this page. Ask Val is AI-assisted and cannot make account, payment, refund, or filing decisions.

Which counties does Valuvia support?

Paid packages are available for eligible residential properties in Riverside, Los Angeles, and San Diego Counties. Informal Prop. 8 packets are currently published for Riverside and Los Angeles. San Diego paid service is the Formal Appeal Package.

Can I correct an error?

Yes. Contact Customer Care promptly with the order number, corrected fact, and supporting record. Do not file or rely on information you know is inaccurate.

How do refunds work?

Formal Appeal ($45): within six months of the Valuvia charge, if the county does not reduce the assessment or the appeal is unsuccessful, you may request a refund of that fee with the county decision letter or other official evidence. Prop. 8 Informal: the package is free, so there is no fee to refund. County fees are never refunded by Valuvia.

County coverage

Paid Valuvia review packages are currently available for eligible residential properties in Riverside, Los Angeles, and San Diego Counties, California.

Valuvia service fee: free for the Informal Request Package or $45 for the Formal Appeal Package. County charges are separate. Riverside currently lists a $30 formal appeal filing fee. Los Angeles currently lists a $46 non-refundable formal appeal filing fee and a possible hardship-waiver process. San Diego currently lists no county assessment-appeal filing fee. Check the official county website for the current fee before filing.

The county’s informal assessment review is available directly from the assessor at no cost. Valuvia’s Informal Request Package is also free — an optional preparation and support package, not a county fee.

Riverside County

Paid packages available

Regular assessment appeals: July 2 through November 30, 2026 (other types have different periods).

Decline-in-value (informal) applications: currently listed through November 1, 2026.

County informal review: $0 (county informal review). Formal county fee currently listed: $30 (Formal appeal filing fee currently listed by the county.) Last checked 2026-08-28.

Los Angeles County

Paid packages available

Regular assessment appeals for 2026: currently listed through November 30, 2026 at midnight PST.

County informal review: $0 (county informal review). Formal county fee currently listed: $46 (Non-refundable formal appeal application fee; the county describes a hardship-waiver process.) Last checked 2026-08-28.

San Diego County

Paid packages available

Regular assessment appeals: confirm the current Clerk of the Board window on the county site before you file.

County informal review: $0 (county informal review). Formal county fee currently listed: $0 (San Diego currently lists no county assessment-appeal filing fee.) Last checked 2026-08-31.

Not yet available for paid orders

These counties are planned or informational only. Valuvia does not currently sell review packages there.

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