Property tax in Orange County starts from a single statewide rule and then diverges sharply. Proposition 13 caps the base ad valorem rate at 1 percent of assessed value, but voter-approved bonds and direct assessments sit on top of it, so the rate a homeowner actually pays ranges from roughly 1.0 percent to more than 1.6 percent depending on the city. Because California reassesses a property at its purchase price when it sells, the figure that matters to a buyer is their purchase price multiplied by the local effective rate. Applied to each city’s median home price, that produces estimated first-year tax bills that differ across the county by more than tenfold, with the lightest burdens inland and the heaviest along the coast. The table below reports that estimate for 19 cities, with the current figures drawn from live housing data rather than fixed in this text.
Housing data period July 2026. Tax rates from the Ownwell Orange County dataset, April 2026.
Estimated property tax by city
Each row multiplies the city’s median home price by its median effective tax rate. The result estimates what a buyer purchasing at that median price would owe in their first year of ownership.
| City | Median price | Effective rate | Est. first-year tax | Mello-Roos |
|---|---|---|---|---|
| Newport Coast | $9,273,814 | 1.08% | $100,200 | Not included |
| Corona Del Mar | $4,872,692 | 1.07% | $52,100 | Not included |
| Newport Beach | $4,747,952 | 1.08% | $51,300 | Not included |
| Laguna Beach | $3,924,103 | 1.10% | $43,200 | Not included |
| Dana Point | $2,264,779 | 1.20% | $27,200 | Not included |
| Rancho Mission Viejo * | $1,273,375 | 1.62% | $20,600 | Included in rate |
| San Clemente | $2,032,852 | 1.01% | $20,500 | Not included |
| San Juan Capistrano | $1,887,320 | 1.07% | $20,200 | Not included |
| Costa Mesa | $1,548,264 | 1.20% | $18,600 | Not included |
| Coto de Caza | $1,831,690 | 1.01% | $18,500 | Not included |
| Irvine | $1,617,747 | 1.11% | $18,000 | Not included |
| Ladera Ranch * | $1,273,375 | 1.38% | $17,600 | Included in rate |
| Huntington Beach | $1,478,190 | 1.16% | $17,100 | Not included |
| Laguna Niguel | $1,516,792 | 1.01% | $15,300 | Not included |
| Laguna Hills | $1,332,094 | 1.02% | $13,600 | Not included |
| Lake Forest | $1,256,781 | 1.04% | $13,100 | Not included |
| Mission Viejo | $1,214,301 | 1.01% | $12,300 | Not included |
| Rancho Santa Margarita | $892,974 | 1.03% | $9,200 | Not included |
| Aliso Viejo | $895,398 | 1.01% | $9,000 | Not included |
* Shares a ZIP code with another city listed above, so both report the same median price. The difference in estimated tax is the difference in rate.
How an Orange County tax bill is built
The 1 percent base rate set by Proposition 13 is the part everyone knows, and it is rarely the part that varies. It applies to the assessed value, which is set at purchase price and then rises by no more than 2 percent a year until the property changes hands again.
Above that base sit voter-approved bonds, typically for school facilities, which are levied as a percentage of assessed value and differ by district. These are why two homes of identical value in neighboring cities can carry different bills.
The third layer is direct assessments, and it is the one that moves a payment most. Community Facilities District levies, known as Mello-Roos, fund infrastructure in newer master-planned communities and are charged as a flat annual amount rather than a percentage. The Mello-Roos column above shows whether a city’s median rate already reflects such a levy. For how these work and how long they last, see our guide to Mello-Roos and HOAs in Orange County.
Two cities, one ZIP code, two different tax bills
Ladera Ranch and Rancho Mission Viejo share ZIP code 92694. They report the same median home price, because the housing data is reported at the ZIP level and there is only one figure to report. Their estimated tax bills, as the table above shows, are thousands of dollars a year apart.
Every dollar of that gap is the tax rate. Both are master-planned communities carrying Mello-Roos levies, and Rancho Mission Viejo, the newer of the two, carries the heavier one. It is the clearest illustration available of why comparing list prices between Orange County communities tells you less than buyers expect: two homes at the same price in the same ZIP code can cost meaningfully different amounts to hold.
Methodology and sources
Effective tax rates are median figures from the Ownwell Orange County dataset, vintage April 2026. An effective rate is the actual annual tax bill divided by the property’s market value, so it already reflects bonds and direct assessments rather than the 1 percent base alone.
Median home prices come from our own market data, which blends Redfin closing medians with Realtor.com listing medians for the ZIP codes in each city. This is the same figure shown on our individual city pages, so the numbers agree across the site.
Estimated first-year tax is the median price multiplied by the effective rate, rounded to the nearest $100. The rounding is deliberate: both inputs are medians with their own margins, and reporting a figure to the dollar would imply precision that is not there. Cities appear only when both a median price and a matched effective rate are available, which is why 19 of the county’s cities are listed rather than all of them.
This data is published under a Creative Commons Attribution 4.0 license. You are free to reuse it, including commercially, with attribution.
Source: Realatrends Real Estate, "Orange County Property Tax by City," data period July 2026. https://www.realatrends.com/orange-county-property-tax/Frequently Asked Questions About Orange County Property Tax
What is the property tax rate in Orange County?
The base rate is 1 percent of assessed value under Proposition 13, but almost no one pays exactly that. Voter-approved bonds and direct assessments push the effective rate higher, and it ranges from roughly 1.0 percent in cities such as Aliso Viejo and Mission Viejo to about 1.6 percent in Rancho Mission Viejo. The median across the cities in the table above is 1.07 percent.
Why do two Orange County cities with similar home prices have different tax bills?
Two reasons, and both sit above the 1 percent base. School and facility bonds are approved district by district, so they differ across city lines. More significantly, newer master-planned communities often carry Mello-Roos levies that fund their infrastructure, and those can add thousands of dollars a year to an otherwise comparable home.
Does buying a home change the property tax on it?
Yes, and this is the single most misunderstood part of California property tax. A sale triggers reassessment at the purchase price, so a new owner’s bill is calculated from what they paid, not from what the previous owner was assessed at. A long-held home can carry a bill far below what the next buyer will owe on the same property.
What is Mello-Roos and does every Orange County home have it?
Mello-Roos is a Community Facilities District levy that funds infrastructure in newer developments, charged as a flat annual amount on top of regular property tax. Most Orange County homes do not carry one. It concentrates in communities built from the 1980s onward, notably Ladera Ranch and Rancho Mission Viejo. Our guide to Mello-Roos and HOAs covers how long they last.
How do I find the exact property tax on a specific home?
The Orange County Assessor is the authority. Their records give the current assessed value and the exact rate area for any parcel, and the Treasurer-Tax Collector publishes the actual bill including every direct assessment. The estimates on this page model a typical purchase at a citywide median and cannot substitute for the record on an individual property.