The property tax rate in California starts at 1% of a home’s assessed value, a ceiling set by Proposition 13 and written into the state constitution. Most homeowners pay somewhere between 1.1% and 1.5% once voter-approved local bonds and special district charges are added on top. Where you land in that range depends on your city, your school district, and whether your neighborhood sits inside a Mello-Roos community facilities district.
The 1% Base Rate
Proposition 13 added Article XIII A to the California Constitution in 1978, and its core rule is simple: the general property tax on any piece of real estate cannot exceed 1% of its full cash value.1California Legislative Information. California Constitution – CONS – Article XIII A – Tax Limitation The 1% applies the same way in all 58 counties and covers both residential and commercial property. Local governments cannot raise the base rate on their own. Counties collect the money and distribute it among schools, cities, and special districts.
What Gets Added on Top of the 1%
The 1% cap has a built-in exception: local governments can add to the rate to repay voter-approved bonds for infrastructure.2Legislative Analyst’s Office. A Look at Voter-Approval Requirements for Local Taxes School construction bonds are the most common, but you may also see charges for libraries, hospitals, or flood control. Each adds a fraction of a percent. In areas with several active bonds, the combined add-ons can push the rate above 1.3%.
Homeowners in newer developments often face another layer: Mello-Roos special taxes. Under the Mello-Roos Community Facilities Act of 1982, local agencies can create special districts to fund the roads, sewers, schools, and emergency services a new neighborhood needs.3California Legislative Information. California Code GOV 53321 – Proceedings to Create a Community Facilities District The charge appears as a separate line item on the annual bill and is secured by a lien on the parcel. A buyer in a brand-new subdivision might see an effective total rate near 1.5%, while someone in an older neighborhood with no active bonds or districts can be closer to 1.1%. These charges are legally separate from the 1% base and cannot be imposed without voter approval or establishment during land development.4California State Treasurer. Proposition 218 and Special Assessments
On top of all that, your bill can include flat-dollar direct assessments for things like street lighting, mosquito abatement, or storm drains. They are small individually but add up.
Why Your Assessed Value Is Often Far Below Market Value
The percentage on your bill is only half the story. The other half is the number it gets multiplied against: the assessed value. Proposition 13 limits how fast that number can grow. Each year the county assessor adjusts your assessed value by an inflation factor tied to the California Consumer Price Index, but the adjustment can never exceed 2%.5Justia. California Constitution Article XIII A – Section 2 If CPI comes in at 1.4%, your assessed value rises by 1.4%. If inflation runs at 5%, you still get capped at 2%.6California State Board of Equalization. Publication 800-10 – Information Sheet
Long-time owners therefore pay taxes on a figure well below what their home would sell for today. A house purchased for $200,000 in 2000 and never sold would have a 2026 assessed value well under $350,000 even with the maximum 2% annual bump, regardless of what similar homes are selling for. That gap is the main reason California’s effective property tax rate, measured against actual market value, sits around 0.7% even though the nominal rate on the bill exceeds 1%.
When Reassessment Resets Your Tax Base
The 2% cap resets whenever the assessor reassesses your property to current market value. Two events trigger that.
Change in Ownership
When a property is sold, gifted, inherited, or otherwise transferred to a new owner, the assessor reassesses it at the current fair market value on the date ownership changed.7California State Board of Equalization. Change in Ownership – Frequently Asked Questions That new value becomes the starting point for future 2% adjustments. The tax jump on a purchase is often large, because the new assessed value captures decades of market appreciation the previous owner’s bill never reflected. If you are buying a home, estimate your tax using the purchase price, not the seller’s current assessed value.
New Construction
Building an addition, converting a garage, or adding a pool triggers a reassessment of the improvement itself. The assessor determines the market value of the new work and adds it to your existing assessed value.8California State Board of Equalization. New Construction Your original home stays on its Prop 13 trajectory. Routine maintenance such as painting or a new roof does not count, but room additions and major remodels do.
New owners and homeowners who finish construction projects often get a supplemental tax bill separate from the regular annual bill. It covers the gap between what the previous assessment produced and the new one, prorated for the months left in the fiscal year.9California State Board of Equalization. Supplemental Assessment It is mailed directly to the owner and is your responsibility even if a lender handles your regular taxes through escrow.
Proposition 19 Exceptions
Proposition 19, in effect since 2021, changed the rules for two situations where reassessment used to be avoidable or avoidable more generously.
A parent can pass a primary residence to a child without full reassessment, but only if the child moves in as their own primary residence within one year and files for the homeowner’s or disabled veterans’ exemption within the same window. The exclusion protects the parent’s low assessed value up to a set dollar threshold above that value. For transfers between February 16, 2025 and February 15, 2027, the threshold is $1,044,586.10California State Board of Equalization. Proposition 19 If the market value exceeds the parent’s assessed value by more than that amount, the excess is added. Investment properties and vacation homes no longer qualify at all.
Homeowners who are 55 or older, or severely disabled, can transfer their current assessed value to a replacement home anywhere in California, up to three times.10California State Board of Equalization. Proposition 19 The replacement must be bought or built within two years of selling the original. If the new home costs the same or less than the original’s sale price, you keep your old assessed value. If it costs more, the difference is added. The threshold is 100% of the sale price if you buy the replacement first, 105% within the first year after selling, and 110% in the second year.
Working Out Your Own Bill
Start with your assessed value, which appears on your annual tax bill or on the county assessor’s website. Subtract any exemptions. Multiply by your area’s total rate, which includes the 1% base plus local bond rates. Then add any flat-dollar direct assessments. Your county auditor-controller publishes the exact rate for each tax rate area, and many counties have online lookup tools.11Auditor-Controller. Tax Rate Area Lookup
A simplified example. Say your home has an assessed value of $500,000, you claim the homeowner’s exemption, and your total rate is 1.25%:
- Taxable value: $500,000 − $7,000 = $493,000
- Percentage-based tax: $493,000 × 1.25% = $6,162.50
- Direct assessments: roughly $150, varying by parcel
- Total annual bill: about $6,313
The lien date is January 1, which is when your assessed value and exemption status lock in for the upcoming fiscal year.12California State Board of Equalization. Homeowners’ Exemption
Exemptions That Lower Your Bill
If you own and occupy your home as your primary residence, the homeowner’s exemption reduces your assessed value by $7,000. At the base 1% rate, that is $70 a year, slightly more once local bond rates are counted.13California State Board of Equalization. Publication 800-6 – Homeowners’ Exemption It takes a one-time application with your county assessor.
Veterans with a service-connected disability, and their unmarried surviving spouses, can claim a far larger exemption. For the 2026 assessment year, the basic exemption removes $180,671 from assessed value. Veterans with household income at or below $81,131 qualify for the low-income version, which removes $271,009.14State Board of Equalization. Disabled Veterans’ Exemption Increases for 2026 You cannot claim both the homeowner’s and the disabled veterans’ exemption on the same property.
California also lets qualifying seniors, blind residents, and disabled homeowners postpone their property tax payments entirely. The state puts a lien on the home and recovers the deferred taxes plus interest when the home is sold or the owner dies. For the 2025–26 program year, household income must be $55,181 or less, and the owner must have at least 40% equity. The filing deadline is February 10, 2026.15California State Controller. Property Tax Postponement
When the Bill Is Due
Property taxes come in two installments. The first covers July through December, is due November 1, and becomes delinquent after December 10. The second covers January through June, is due February 1, and becomes delinquent after April 10.16California Tax Service Center. Property Tax Function Important Dates If a delinquency date falls on a weekend or holiday, it moves to the next business day.
Missing a deadline adds a 10% penalty on the unpaid amount with no grace period beyond the delinquency date.17California Legislative Information. California Revenue and Taxation Code 2617 On a $4,000 installment, that is an immediate $400. The second installment also carries a one-time administrative fee. A full-year tax left unpaid through June 30 goes into default and begins accumulating 1.5% per month, which works out to 18% per year. A tax-defaulted property can eventually be sold at auction.