When to file your property tax appeal — the filing windows by state and 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.