The county kept your taxes high.
July 2nd is your shot back.
Bay Area homeowners who bought in 2021–2022 are overpaying $3,800–$5,000/year on average — and the Formal Appeal window opens July 2.
Check your gap now. File the day it opens.
Flat $99. No 25% commission. Hearing-ready package, delivered in minutes.
Free Assessor vs Market Value check. Takes 10 seconds.
Two paths. One window. The data decides which one wins.
San Mateo County offers a free Decline in Value informal review — you can request one now through October 31. Marin County opens its informal review July 1. Both counties also have a formal Formal Appeal window (July 2 – November 30) for a binding decision from the Assessment Appeals Board.
The Formal Appeal — which opens July 2 — puts you in front of your county's Assessment Appeals Board. A real hearing. Real evidence. A binding decision. The Board's approval rate for well-documented cases is significantly higher when you come in with data.
The catch? You need comparable sales data, APN numbers, an opinion of value, and a rebuttal script ready before you walk in. That's exactly what PropCut builds for you.
Important: San Mateo County charges a $30 nonrefundable filing fee for formal appeals. Marin County charges $50. That's exactly why you should verify your gap before filing — PropCut does this in 30 seconds so you only pay when you have a real case.
We built PropCut to hand you the same hearing package, for a flat $99.
Three steps. Ten minutes.
Enter your address
We instantly pull your current assessed value and compare it against recent sales in your neighborhood.
Get your AI report
PropCut selects the 3 best comparable sales and calculates your optimal target value — the number that maximizes your savings without triggering a rejection.
Submit & save
We hand you a complete hearing package — comps, opinion of value, rebuttal script. File with the county Appeals Board on July 2. Average Bay Area result: $4,200 saved.
Same outcome. Very different price.
Calculate your savings
Enter your assessed value and current market value to see your potential refund.
See how much you could save
Real savings from real homeowners
"Bought at the 2022 peak and had no idea my assessed value was still way above market. PropCut found a $370K gap. Filed myself in 15 minutes."
"I was paying Ownwell 30% every year. Switched to PropCut — $99 flat and I keep every dollar of the savings myself. No-brainer."
"Didn't realize Contra Costa has no deadline for the informal review. PropCut generated the comps, I submitted the same day. County reduced my assessment within 6 weeks."
"The comps were exactly right — all lower than my assessed value. County reduced it without question. Took less than 20 minutes total."
Frequently asked questions
The county won't adjust your taxes on their own.
You have to make the case.
Appeal window: July 2 – November 30, 2026. The homeowners who win are the ones who know their gap before July 2 — not after.
Build My Case Free