San Francisco Property Tax Appeal: The Complete Guide
Danielle Cui · August 8, 2026
Everything a San Francisco homeowner needs to appeal an over-assessed property: the July 2 – September 15 deadline, the $120 filing fee, the evidence that wins, the hearing, and how much you can save.
Bay Area Property Tax Appeal Deadlines by County
Danielle Cui · August 8, 2026
September 15 or November 30? California's appeal deadline is not the same in every county. The filing windows for San Francisco, Alameda, Santa Clara, San Mateo, Contra Costa, Marin, Napa, Sonoma, and Solano.
In California, the Assessor Has to Prove You Wrong (If You Live in Your Home)
Danielle Cui · August 8, 2026
Revenue & Taxation Code §167 shifts the burden of proof to the assessor for owner-occupied single-family homes. What that means at your hearing, and the two conditions you have to meet to get it.
How to Fill Out California's Assessment Appeal Application (Form BOE-305-AH)
Danielle Cui · August 8, 2026
A section-by-section walkthrough of the BOE-305-AH assessment appeal application — including the opinion-of-value line that decides your ceiling and the refund box most people forget to check.
Informal Assessor Review vs. Formal Appeal: Which One Should You File?
Danielle Cui · August 8, 2026
California counties offer a free informal decline-in-value review and a formal Assessment Appeals Board appeal. They have different windows, different costs, and only one of them protects your rights.
Can Appealing Your Property Taxes Backfire?
Danielle Cui · August 8, 2026
An honest answer: California appeals boards can raise your assessed value, not just lower it. When that actually happens, why it's rare for homeowners, and the two mistakes that create the risk.
You Won Your Property Tax Appeal. How Do You Actually Get the Money?
Danielle Cui · August 8, 2026
What happens after a successful California assessment appeal — the corrected roll, how refunds are issued, the checkbox that makes them automatic, and the two-year rule that works in your favor if the board stalls.
I Just Bought My Home — Can I Appeal the Assessment?
Danielle Cui · August 8, 2026
Yes, and it may be worth more than a normal appeal. How California sets your base year value from the purchase price, the 60-day supplemental window, and the four-year window most buyers don't know exists.
How to Appeal Your Property Taxes in Seattle
Danielle Cui · August 8, 2026
Seattle homeowners face a higher evidentiary bar than California's: the assessor's value is presumed correct. What 'clear, cogent, and convincing' means for your petition, the July 1 / 60-day deadline, and why a lower value doesn't cut your bill proportionally.
Why San Francisco Condos Are the Most Over-Assessed Homes in the City
Danielle Cui · August 8, 2026
SF condo values diverged sharply from single-family homes — but assessments don't follow automatically. Why condo owners are the most likely to be over-assessed, and how to pick comps within your own building.
The 90-Day Rule That Disqualifies Your Best Comparable Sales
Danielle Cui · August 8, 2026
California §402.5 bars any sale more than 90 days after the valuation date from being used as a comparable. In a falling market that excludes the sales that best prove your case — here's how to work within it.
The Property Tax Appeal Checklist: Everything to Do Before You File
Danielle Cui · August 8, 2026
A complete pre-filing checklist for a residential property tax appeal — confirm your deadline, audit the assessor's record, size the gap, build admissible comps, and file. With the county-specific dates.
Should You Hire a Property Tax Consultant?
Danielle Cui · August 8, 2026
Contingency-fee tax agents typically keep 25–50% of your first-year savings. When that's worth it, when it isn't, and how to check out a firm before you sign an authorization that outlives the appeal.
San Francisco Property Tax Rate: What You Actually Pay
Danielle Cui · August 8, 2026
San Francisco's secured property tax rate is 1.18268325% for FY 2025-26 — the 1% Prop 13 base plus voter-approved bonds. How to calculate your bill, and why the rate is the part you can't appeal.
San Francisco Property Tax Due Dates, Penalties, and How to Pay
Danielle Cui · August 8, 2026
SF secured property tax installments are delinquent after December 10 and April 10, with a 10% penalty each. The full calendar, what happens if you fall behind, and why you must keep paying during an appeal.
Why You Got a Supplemental Property Tax Bill in San Francisco
Danielle Cui · August 8, 2026
A supplemental bill isn't a mistake or a double charge — it's the catch-up between the seller's assessed value and yours. How it's calculated, when it's due, and the 60-day window to appeal it.
The San Francisco Homeowners' Exemption (and Why It Matters More Than $80)
Danielle Cui · August 8, 2026
The homeowners' exemption takes $7,000 off your assessed value — about $80 a year. File once and it auto-renews. Its real value is that it's the qualifier for a burden-of-proof advantage in any appeal.
How to Look Up Your San Francisco Assessed Value and Property Record
Danielle Cui · August 8, 2026
Where to find your SF assessed value, APN, and the property characteristics the Assessor has on file — and how to audit that record for the factual errors that win appeals outright.
How TICs Are Assessed in San Francisco (and How to Appeal One)
Danielle Cui · August 8, 2026
A TIC building is one parcel with one tax bill, but each fractional interest is reassessed separately when it sells. What that means for your assessed value, your share of the bill, and your right to appeal.
Washington vs. California Property Tax Appeals: Key Differences
Danielle Cui · June 18, 2026
Washington and California assess and appeal property taxes very differently — no Prop 13 in WA, different deadlines, and different appeal boards. Here's what changes if you own in both states.
How to Appeal Your Property Taxes in King County, WA (Seattle & Issaquah)
Danielle Cui · June 9, 2026
How to appeal an over-assessed property in Seattle, Issaquah, and the rest of King County — the Board of Equalization, the July 1 / 60-day deadline, and the evidence you need. Washington has no Prop 13.
How to Appeal Your Property Taxes in San Jose (Santa Clara County)
Danielle Cui · May 28, 2026
How to appeal an over-assessed San Jose property tax bill with the Santa Clara County Assessment Appeals Board — eligibility, comparable sales, the deadline, and the hearing.
How to Appeal Your Property Taxes in Oakland (Alameda County)
Danielle Cui · May 14, 2026
A step-by-step guide to appealing an over-assessed Oakland property tax bill with the Alameda County Assessment Appeals Board — eligibility, comps, the deadline, and how to win.
7 Property Tax Appeal Mistakes That Get Your Case Denied
Danielle Cui · April 30, 2026
The common errors that sink property tax appeals — missed deadlines, weak or out-of-window comps, Zillow estimates, and more — and how to avoid each one.
How Much Can You Save by Appealing Your Property Taxes?
Danielle Cui · April 16, 2026
A clear breakdown of property tax appeal savings — how the math works, realistic examples, and why a reduction compounds into future years.
Do You Need an Appraisal to Appeal Your Property Taxes?
Danielle Cui · April 2, 2026
Whether a professional appraisal is worth it for a property tax appeal, when comparable sales are enough, and how to decide for your case.
How to Read Your Property Tax Assessment Notice
Danielle Cui · March 19, 2026
Your assessment notice is the starting gun for an appeal. Here's what each number means — assessed value, land vs. improvements, the valuation date, and the appeal deadline.
Assessed Value vs. Market Value: Why the Gap Means You May Be Overpaying
Danielle Cui · March 5, 2026
Assessed value and market value aren't the same thing — and when they drift apart, you can overpay on property tax. Here's the difference and how to check whether you have an appeal.
Prop 8 Explained: How a Decline-in-Value Reassessment Lowers Your CA Property Tax
Danielle Cui · February 18, 2026
California's Proposition 8 lets you get a temporary property tax reduction when your home's market value drops below its assessed value. Here's how a decline-in-value reassessment works.
The Evidence You Need to Win an SF Property Tax Appeal
Danielle Cui · January 21, 2026
Comparable sales are the heart of a San Francisco property tax appeal. Here's how to choose comps that the Assessment Appeals Board will respect — by location, type, size, age, condition, views, and floor.
San Francisco Property Tax Appeal Deadline & Timeline
Danielle Cui · January 8, 2026
When to file a San Francisco property tax appeal, the full timeline from assessment notice to hearing, what happens if you miss the window, and how to request a postponement.
What to Expect at an SF Assessment Appeals Board Hearing
Danielle Cui · December 18, 2025
A San Francisco homeowner's first-hand walkthrough of the Assessment Appeals Board hearing — how it works, how to present your comps, what to say (and what backfires), and what happens if you disagree.
Why SF Property Taxes Stay High When Values Drop (Prop 13 & Prop 8)
Danielle Cui · December 3, 2025
When San Francisco home values fall, property tax bills often don't. Here's how Proposition 13 and Proposition 8 work, why assessments don't auto-adjust downward, and what to do about it.