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San Francisco County · CaliforniaAppeal Your San Francisco County Property Tax.
The San Francisco County Assessor's office in San Francisco values every property on California's January 1 lien date. When that assessed value overshoots the market, you have two tools: an informal Prop 8 decline in value review with the assessor, or a formal Assessment Appeals Board filing with the Clerk of the Board.
San Francisco County Assessor
Source: California State Board of Equalization county directory.
San Francisco County Prop 8 Filing Steps
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Check if your property qualifies
Run your address or APN through vulorean.com to see if your assessed value exceeds current market value as of January 1. You can also check your assessed value on the SF Property Map. Note: SF's informal review is available only for single-family homes, condos, townhouses, live-work lofts, and cooperative units. TICs and commercial properties must go directly to formal appeal.
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Get your Vulorean valuation report
The report produces a market value opinion as of the January 1 lien date and includes comparable sales dated no later than March 31. Choose DIY (you file using the report) or Concierge (Vulorean handles everything from here).
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Submit your informal review request with your report
San Francisco has an online informal review form. Filing window: January 2 – March 31. No fee. Important: third parties cannot submit on behalf of the owner for the informal review — the owner must file directly. Concierge service applies to formal appeals only for this county.
DIY Submit the online form (or mail / fax / email) with your Vulorean report and comparable sales as supporting documentation. Deadline: March 31, postmarked.Concierge Not available for the informal review — SF requires the owner to file directly. Your Vulorean rep takes over at step 5 (formal appeal).- Online informal review: sf.gov/apply-decline-value
- Prop 8 info: sf.gov — Tax Savings via Decline in Value
- Mail to: SF Assessor-Recorder's Office, Attn: Informal Review, 1 Dr. Carlton B. Goodlett Place, Room 190, SF, CA 94102
- Fax: (415) 554-7915
- Email: InformalReviewRP@sfgov.org
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Await assessor response
DIY Notice of Assessed Value mailed by end of July. If approved, value is reviewed automatically each year.Concierge Your Vulorean rep monitors the response and keeps you informed. -
Formal appeal if denied
DIY File an Application for Changed Assessment with the SF Assessment Appeals Board between July 2 and September 15. Note: $120 non-refundable filing fee. File in parallel with the informal review — September 15 comes quickly. TIC owners and commercial property owners skip step 3 and go directly here.Concierge Your Vulorean rep handles the appeal filing on your behalf.- Assessment Appeals Board: sfgov.org/aab
- Clerk of the Board phone: (415) 554-6778
- Clerk of the Board office: City Hall, Room 405, San Francisco, CA 94102
San Francisco County reminder: California's Prop 13 caps annual taxable value growth at 2%, so a successful appeal keeps paying dividends every year your market value sits below the Prop 13 base. Prop 8 is the complement. It lets you capture temporary market dips. Both paths run through the San Francisco County Assessor in San Francisco.
When You Probably Qualify for a San Francisco County Reduction
- Your current assessed value is above recent sales of comparable homes in San Francisco County
- You bought in San Francisco County in the last 12 months below the county's assessed value
- Your San Francisco Assessor parcel record has errors, wrong square footage, added features that don't exist, or incorrect grade
- Your home has unrepaired damage, structural issues, foundation settling, or major deferred maintenance
- Your neighborhood's market softened but the San Francisco Assessor hasn't adjusted
San Francisco County Appeal Package · $50 Flat
We pull your San Francisco County Assessor record, build comparable sales, and produce a filing ready BOE-305-AH appeal in 48 hours. You keep 100% of the savings.
Start My San Francisco County Appeal →San Francisco County Property Tax FAQ
When does San Francisco County mail assessment notices?
California counties, including San Francisco, typically mail notices in June or July. Your window to file BOE-305-AH opens July 2 and closes either September 15 or November 30 depending on the county's Clerk of the Board schedule. Confirm with the San Francisco Clerk's office.
Do I have to use an attorney?
No. The California Assessment Appeals Board is designed for pro se homeowners. Filing BOE-305-AH is a two page form and hearings are informal. Most San Francisco County homeowners file and represent themselves.
Will my San Francisco County taxes go up if I appeal?
No. California appeal outcomes at the Assessment Appeals Board are strictly reductions or no change. Prop 13 caps assessed value growth at 2% per year regardless.
Is Prop 8 the same as Prop 13?
No. Prop 13 is the base year rule that caps annual assessment growth. Prop 8 is the companion rule that lets the assessor (or you) temporarily drop your value below the Prop 13 base when the market falls. When the market recovers, your value can rise back up to the Prop 13 cap, but not above it.