California homeowners save an average of $1,500/year.
Are you overpaying?

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$1K–$3K/yrTypical California overpayment

4–6 hrsof research time saved

~10 minAverage filing time

Range reflects 10–20% overassessment on median home values in Alameda County ($925K) and Santa Clara County ($1.5M) at a 1.1% effective tax rate. Sources: Redfin, January 2026.

How it works

Three steps. No signup. No phone calls.
Just your address and 60 seconds.

Average annual savings$1,500/yearBased on Alameda County median home value (Redfin, Jan 2026)

The county reviews some properties automatically, but their review may not catch every overassessment. We go deeper — analyzing more comps with professional-grade adjustments to find savings others miss.

Enter your address

Type your property address and we'll look up your current assessment from county records. Takes about 5 seconds.

See if you qualify

We compare your assessed value to estimated market value and calculate your potential savings. Completely free.

Get your filing guide

Comparable sales analysis, copy-paste values for the county form, assessor rebuttal prep, and a complete filing guide. Data Package $7.99 · Filing Guide $24.99.

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Assessed value lookup
Market value estimate
Savings estimate
Comparable sales data

Data Package

The comparable sales that support your case

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Up to 10 comparable sales
Sortable data table
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Detailed analysis & filing guide

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Filing Guide

Everything you need to file your appeal today

$24.99one-time

Everything in Data Package
Comp analysis & adjustments
Copy-paste filing instructions
Assessor rebuttal prep

Not sure? Start with the Data Package — you can upgrade anytime for $17.00.

File your informal review request soon — it's free

The Alameda County Assessor accepts informal review requests for the current assessment year. No fee, no hearing — just submit your evidence and a certified appraiser reviews it. File early for the best chance of a timely review.

Understanding California property tax

Most California homeowners don't know this — but you might be paying more property tax than you have to.

Prop 8

What is Proposition 8?

When your home's market value drops below its assessed value, Prop 8 lets you pay taxes on the lower amount. Most homeowners don't know this exists.

The assessment appeals process

Filing an appeal sounds intimidating, but it's simpler than you think. Here's how the two-track system works in Alameda County.

California homeowners save an average of $1,500/year. Are you overpaying?