AppealSealReduce Your Property Taxes, Average Refund $2,847
Instantly Check if Your Home Qualifies
Meet the Builder Behind AppealSeal
I built this because I was tired of watching homeowners lose thousands of dollars — simply because no one told them they could appeal.
Hi, I’m Philipp Berner. I’m a California homeowner, engineer, and problem solver. When I bought my home, I learned that the county’s assessed value was higher than the market value — which meant I was overpaying in property taxes. Filing an appeal took hours of research and confusing paperwork.
So I built AppealSeal to make it easy. We use public county data and follow the same steps an assessor uses — but automated. You can check if you qualify for a refund in seconds.
45-second overview
Your Right to Appeal Property Taxes by Law
Every California county decides how much your home is worth each year. If your home’s real market value drops below that number, you can ask the county to lower it.
This is called a Decline-in-Value Appeal, protected by state law under Proposition 8. It’s your legal right to request a correction if your assessment is too high.
What You Get
AppealSeal generates the right set of data you need to file your property tax appeal within seconds. Our process follows the California property tax appeals guide, so you don't have to read it nor do the work.
Smart Comps Chosen the Way Assessors Do
We find home sales near you that are most like your home.
Our model follows the California appeal rules, so comps make sense to the Assessor and the AAB.
You can see each sale, the date, distance, and fit.
- •Nearby and recent
- •Size and lot are similar
- •Clear reasons why each comp was used
Animated table of comparable sales
Recent nearby sales with distance, date, and size.
Worksheet That Matches County Review
You get a clean worksheet with the numbers the county looks for: land, improvements, living area, and any simple adjustments.
It's in the format assessors expect, so they can review it fast.
- •Land vs. improvements
- •Square-footage math shown
- •Easy to print and sign
Comparable worksheet ready to print
Comparable worksheet with land/improvement breakdown and living-area math.
A Map That Makes Your Case Easy to See
A simple map shows your home and each comp close by.
This helps the Assessor and AAB see that your comps are truly in your area.
- •Pins for subject + comps
- •Distances at a glance
- •Neighborhood fit is obvious
Interactive neighborhood map
Subject property and comps shown on a simple, clean map.
From Address to Refund in 15 Min
1️⃣ Enter Your Address
We instantly pull your property info from county data and check your current assessed value.
2️⃣ Review Your Case Strength
See how your home compares to recent sales. If you’re over-assessed, we’ll generate your full package.
3️⃣ File Your Appeal
Download your ready-to-submit forms, worksheet, and map. Mail them to your county’s Assessment Appeals Board with the small filing fee (usually $30–$60).
Why It Matters Right Now
During the COVID years, interest rates were at record lows. Home prices shot up, and many people bought at those peaks. Those prices became your property-tax baseline.
Now that interest rates are higher, home prices have dropped — but counties haven’t updated your assessed value.
That means you’re paying tax on an outdated number. You’re paying for value that no longer exists.
Checking if you qualify is free, easy, and could mean hundreds or even thousands of dollars back in your pocket.
Real Results From California Homeowners
Success Stories
“I've done property tax appeals before in Santa Clara County but never in Yolo. Honestly, I had forgotten all about it until I got an email from AppealSeal -- it was the reminder I needed. Super easy to fill out the form and get started.”
“I was literally in the middle of pulling comps myself to appeal my property taxes when I found AppealSeal. I bought it on the spot and it gave me everything I needed in one place instead of spending hours digging through listings. Now I'm on track to save $1,877 this year—100% worth it.”
“I used AppealSeal in its very early days to prepare my property tax refund. After doing the process manually the past two years, I know how much work it takes -- and this has been by far the best experience I've had. Super easy, transparent, and effective. I'm expecting about $10k back, and I can honestly recommend this to everyone.”
“I used AppealSeal this year to challenge the assessed value of my home in Los Angeles County. All I did was enter my address and within a few minutes I had a full report with comps and everything I needed to file. I spent maybe five minutes total and I'm on track to save $11,234 in property taxes. I'd absolutely do it again.”
Frequently Asked Questions
Ready to See If You're Owed a Refund?
It's free, fast, and based on official county data.