California assessment appeal
California assessment appeal prep
California homeowners preparing an Assessment Appeals Board application — including base-year and decline-in-value contexts — who want document prep and hearing talking points.
Who this is for
California homeowners preparing an Assessment Appeals Board application — including base-year and decline-in-value contexts — who want document prep and hearing talking points.
Typical process
- 1Share your notice, APN, and county.
- 2We prepare comps, error/exemption notes, and AAB-oriented package materials.
- 3You receive a Review or Appeal Plan.
- 4You file with your county Assessment Appeals Board by the county deadline.
2026 window notes
Per BOE LTA 2026/023 guidance: regular filing begins July 2, 2026. Deadline is September 15, 2026 or November 30, 2026 by county. Nov 30 counties include (non-exhaustive): Los Angeles, Orange, Riverside, Sacramento, San Bernardino, San Diego, Contra Costa, Fresno, Kern, San Mateo, Santa Barbara, Sonoma, and many others. Sep 15 examples: Alameda, San Francisco, Santa Clara, Ventura, Placer, San Luis Obispo. Always confirm your county deadline on your notice or official AAB site. No guaranteed savings.
Confirm the deadline on your notice or the official board / assessor site before you file.
What we prepare
- Assessment Review or filed-ready Appeal Plan
- Comparable sales / equity analysis as available
- Error & exemption checklist
- AAB application-oriented form guidance
- Hearing script / talking points
What we don't do
- Legal advice on Proposition framing as counsel
- Legal representation at AAB hearings
- Guaranteed assessment reductions
- County filing fees
Parcel Plan provides document preparation and educational materials for property-tax appeals in the United States only. We are not a law firm and do not provide legal advice or legal representation. Results vary by county, facts, and deadlines. We do not guarantee assessment reductions or tax savings. You (or a licensed representative you hire separately) are responsible for filing with your county assessor or appeal board.
Confirm your county's deadline on your notice or official board site.