What's in Your Orange County Property Tax?
Your Orange County property tax isn't one number — it's the 1% Proposition 13 base plus a stack of voter-approved bonds that depends on your Tax Rate Area. Pick your city below to browse its Tax Rate Areas, then open a Tax Rate Area to see every ad-valorem charge, what agency levies it, and what it funds.
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Mello-Roos or a “Direct Assessment” line on your bill? Learn how Mello-Roos special taxes work → — these flat charges (common in Irvine and south-county) are separate from the ad-valorem rates above.
Frequently Asked Questions
What makes up my Orange County property tax rate?
Every parcel pays the 1% Proposition 13 base levy. On top of that, your Tax Rate Area adds voter-approved bond debt for the agencies that serve it — your school district, community college district, the Metropolitan Water District of Southern California, local water districts, and any city bond. The exact mix depends on your Tax Rate Area, so two homes in the same city can pay slightly different rates.
What is a Tax Rate Area (TRA)?
A Tax Rate Area is a geographic zone with a unique combination of overlapping taxing agencies. Orange County has over 4,800 of them. Your TRA number is printed on your county tax bill, and it determines which voter-approved bonds are added to the 1% base.
Does this include Mello-Roos or direct assessments?
No. The rates here are ad-valorem only (a percentage of assessed value). Mello-Roos / Community Facilities District special taxes — common in Irvine and the newer south-county communities — plus fixed direct assessments are billed separately and listed separately on your Orange County bill. A few special or land-related bonds (Auditor type code A4) are also shown separately from the ad-valorem total.
Why is my rate different from my neighbor's?
If your neighbor is in a different Tax Rate Area, different school, college, or city bonds apply, so your ad-valorem totals differ even on the same street. Open your city below and find your exact TRA (from your bill) for its itemized breakdown.
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Source: Orange County Auditor-Controller Tax Rate Book (2025-2026) for the itemized ad-valorem levies; Orange County Treasurer-Tax-Collector secured parcels + BOE Tax Rate Area polygons for the city-to-TRA aggregation. Ad-valorem rates exclude Mello-Roos, special/land-related (A4) bonds, and fixed direct assessments. A city's “most common” TRA is a convenience — your parcel's TRA (on your bill) is authoritative. Educational information, not an official bill.