Other services take a cut of your savings.
We charge $24.99.
Most property tax appeal companies charge 25–35% of whatever you save — hundreds of dollars, every year. Overassessed gives you the same data and a step-by-step filing guide for a flat $24.99. You keep every dollar.
Based on average Alameda County savings
If you save $2,208/year
$2,208
you keep
$2,183
you keep
$2,159
you keep
$2,108
you keep
$2,059
you keep
$1,546
you keep
Savings estimate based on comparable sales within 0.5 miles. Ownwell fee calculated at 30% (typical CA rate). Actual savings vary by property.
$24.99, not 30% of your savings
Full-service companies like Ownwell charge 25–35% of whatever you save — and they charge it every year. On a $2,208 reduction, that’s $552–$773 going to the service, not to you. Overassessed charges $24.99 once. At average savings, the Filing Guide pays for itself in about 4 days. After that, every dollar is yours.
Built for California, not stretched across 50 states
California’s property tax system is different. Prop 13 caps your annual increases at 2%. Prop 8 lets you request a temporary reduction when market values drop below your assessed value. National tools like AppealDesk or Ownwell treat every state the same. Overassessed is built around how California counties actually assess property, what the assessor’s office expects to see, and the specific forms and deadlines for your county.
You file it. It’s easier than you think.
Most California counties have an informal review process — you contact the assessor’s office with your evidence, and a certified appraiser reviews your case. No hearing. No courtroom. No lawyer. In Alameda County, you can start with a phone call. Our Filing Guide gives you the comparable sales data, the evidence packet, and the exact steps for your county. The filing itself takes about 10–15 minutes. The hard part was the research — and we already did that.
What you get at each price
Start free. Upgrade only if the numbers make sense for your property.
FREE
Qualification check
Find out in 10 seconds
- Assessed vs. market value
- Estimated annual savings
- No account required
$7.99
Data Package
The comps that support your case
- Everything in Free
- Full comparable sales report
- Property details and sale dates
- Good if you want to review yourself
$24.99
Filing Guide
Everything to file your appeal today
- Everything in Data Package
- Personalized case analysis
- Step-by-step county filing instructions
- Downloadable PDF evidence packet
At average savings of $2,208/year, the Filing Guide pays for itself in about 4 days.
Common questions
You absolutely can — and we encourage it. Many California counties, including Alameda, offer an informal review process where you contact the assessor’s office with comparable sales data and a certified appraiser reviews your case. It’s free and it works. The hard part is gathering the right comps, understanding Prop 8 vs. Prop 13, and knowing what numbers the assessor actually looks at. Overassessed does that research for you instantly. Think of us as the preparation step — whether you go informal or formal.
Convenience has a price. On a typical $2,208 annual savings, Ownwell charges $552–$773. Every year. They also auto-enroll you annually — you have to actively cancel to stop paying. Overassessed costs $24.99 once, and you keep every dollar you save. The filing process in most California counties takes about 10–15 minutes using our step-by-step guide. That’s a $500+ difference for 15 minutes of effort.
AppealDesk covers all 50 states at $49 but isn’t built specifically for California’s Prop 8/Prop 13 system. AppealSeal is California-specific at $100 but doesn’t include a personalized case analysis or a cover letter. Overassessed is California-specific, includes everything from comparable sales to a filing guide with a full case analysis, and costs half of what AppealDesk charges.
No. California’s appeal process is designed for homeowners to handle themselves. The California Board of Equalization confirms you can represent yourself at any hearing. Most residential appeals are resolved through informal review or by mail — no courtroom, no confrontation. You submit evidence, the county reviews it, and you get a decision.
Check your property — it takes 10 seconds
No account. No commitment. Just your address and an honest answer about whether you're overpaying.
Property data from county records via BatchData. Updated daily.