California property tax starts at 1% of your home’s assessed value, with annual increases capped at 2%, and your assessed value is generally the price you paid when you bought the property. On top of that 1%, most bills carry voter-approved bond repayments and special district charges, so the effective rate runs higher. The base resets to current market value whenever the property sells or you build something substantial.
The 1% Rate and the 2% Annual Cap
Article XIII A of the California Constitution limits the general property tax rate to 1% of a property’s full cash value.1Justia. California Constitution Article XIII A – Tax Limitation Full cash value starts as your purchase price. Each year after that, the county assessor can raise the assessed value by an inflation factor that cannot exceed 2%. If the California Consumer Price Index rises by less than 2% in a given year, the increase matches that lower figure.
This acquisition-value system favors long-term owners. A home worth $1.2 million today might carry an assessed value of $500,000 if the owner bought decades ago, producing a base tax of roughly $5,000 a year rather than $12,000. The gap vanishes when the property changes hands and the new owner’s assessment resets to what they paid.
What Triggers a Reassessment
A change in ownership resets your assessed value to current fair market value. Revenue and Taxation Code Section 60 defines a change in ownership broadly as the transfer of a present interest in real property, including the right to use or benefit from it.2California Legislative Information. Revenue and Taxation Code RTC – Implementation of Article XIIIA of the California Constitution Sales are the obvious case. Long-term leases, transfers into or out of trusts (with exceptions), and some corporate restructurings count as well. Transfers between spouses, and certain parent-child transfers under Proposition 19, don’t trigger reassessment.
New Construction
Adding or substantially altering a structure creates a separate reassessment. The assessor values the new improvement at fair market value and adds that to the existing base year value of the land and the older structures.3California Board of Equalization. New Construction Routine maintenance and cosmetic updates don’t count. Adding a bedroom, building a pool, or converting a garage to living space does. Assessors watch building permits to catch these projects.
Both a change in ownership and new construction produce a supplemental tax bill covering the gap between the old and new assessed values for the rest of the fiscal year.4California Legislative Information. California Code, Revenue and Taxation Code – RTC 75.11 These bills arrive separately from the regular annual bill. If you buy mid-year, expect one within a few months of closing.
Property Held Through a Legal Entity
Property held through an LLC, partnership, or corporation gets reassessed when someone acquires more than 50% of the ownership interests in the entity, a “change in control” that triggers reassessment of all California real property held by that entity and its subsidiaries.5California Department of Tax and Fee Administration. Legal Entity Ownership Program (LEOP) – Definition of Change in Control and Change in Ownership Incremental transfers accumulate; once cumulative transfers of the original co-owners’ interests exceed 50%, reassessment follows.6California Department of Tax and Fee Administration. Legal Entity Ownership Program (LEOP) – Result of Change in Control, and/or Change in Ownership
Keeping a Low Tax Base Under Proposition 19
Proposition 19, effective April 1, 2021, changed two things families ask about most: inheriting a home from a parent, and moving to a new one in retirement.
Inheriting From a Parent
The old rule let children inherit a parent’s low tax base on a primary residence plus up to $1 million in assessed value on other properties. That broad exclusion is gone. The inherited property now has to be the parent’s primary residence, and the child must move in and claim it as their own principal residence within one year of the transfer.7Office of the Assessor, County of Santa Clara. Parent-Child Transfer (Proposition 19) The child also has to file for the homeowners’ or disabled veterans’ exemption within that same year.
There’s a value cap even when the child does move in. For transfers between February 16, 2025 and February 15, 2027, the exclusion applies only to the first $1,044,586 of the difference between the property’s current market value and its taxable value. Market value above that gets added to the transferred base. The claim must be filed within three years of the transfer.8California State Board of Equalization. Proposition 19 Family farms qualify under a separate rule that doesn’t require the child to live on the property.
Moving at 55 or Older
Homeowners who are at least 55, severely and permanently disabled, or victims of a natural disaster can transfer their existing tax base to a replacement primary residence anywhere in California.9California Legislative Information. California Code, Revenue and Taxation Code – RTC 69.6 The replacement home must be purchased or newly built within two years of selling the original. The benefit is available up to three times in a lifetime.
If the replacement home costs the same or less, the old base transfers straight across. If it costs more, the difference between the two market values gets added to the old base. “Equal or lesser value” means up to 105% of the original’s market value if you buy within the first year after selling, and up to 110% in the second year.9California Legislative Information. California Code, Revenue and Taxation Code – RTC 69.6 File the claim with the assessor of the county where the replacement sits within three years of purchase or completion.
What Else Is on Your Tax Bill
The 1% general levy is rarely the whole bill. Most owners also pay charges for voter-approved bonds that fund schools, utilities, transportation, and other infrastructure. These charges track the local government’s debt payments, not your property’s value, so they move with borrowing schedules rather than the real estate market.
Mello-Roos districts, created under the Community Facilities Act of 1982, add another layer. Local governments form these districts to finance public facilities and services in developing areas, from roads and parks to police and fire stations.10California Legislative Information. California Code GOV 53321 – Proceedings to Create a Community Facilities District Mello-Roos charges are special taxes rather than ad valorem taxes. They’re usually calculated on parcel size, square footage, or property use rather than market value, and they appear as line items on the regular bill. In newer subdivisions these charges can add several thousand dollars a year, and they don’t shrink as the property ages. Ask about Mello-Roos before closing on a home, because it isn’t always obvious during the purchase process.
Exemptions That Reduce Your Bill
Homeowners’ Exemption
Owner-occupants can shave $7,000 off their assessed value by claiming the homeowners’ exemption.11Justia. California Constitution Article XIII Section 3 – Taxation At the 1% base rate that’s about $70 a year in savings before any additional levies. The home must be your principal residence as of the January 1 lien date. You file once with the county assessor, and the exemption stays in place until you move or transfer the property. First-time filers should submit by February 15 to receive the full exemption for that year.12California State Board of Equalization. Homeowners’ Exemption
Disabled Veterans’ Exemption
Veterans with a service-connected disability receive a much larger reduction. For the 2026 assessment year the basic exemption is $180,671 and the low-income exemption is $271,009, both adjusted annually for inflation.13California State Board of Equalization. LTA 2025/014, Disabled Veterans’ Exemption Increases for 2026 The property must be the veteran’s principal residence, and the discharge must have been under other than dishonorable conditions. You’ll need the DD-214 and a VA letter showing the disability rating.14California Department of Tax and Fee Administration. Disabled Veterans’ Exemption This exemption replaces the homeowners’ exemption on the same property; the two cannot be combined.
Welfare Exemption for Nonprofits
Nonprofits formed and operated exclusively for charitable, hospital, religious, or scientific purposes can apply for a welfare exemption that removes the property from the tax rolls entirely. The organization must hold a current federal or state tax-exempt letter, and its formation documents must irrevocably dedicate the property to qualifying purposes with a dissolution clause sending assets to a similar organization if operations cease.15California State Board of Equalization. Property Tax Welfare Exemption The Board of Equalization decides whether the organization qualifies; the county assessor decides whether the specific property is being used for an exempt purpose. A 501(c)(3) letter alone doesn’t guarantee a California exemption, because state law uses a narrower definition of qualifying purposes than federal law.
When to Pay, and the Cost of Being Late
The property tax year runs from July 1 through June 30. Counties mail secured-roll bills between September and October, split into two installments:
- First installment: due November 1, delinquent after December 10. Late payment adds a 10% penalty.
- Second installment: due February 1, delinquent after April 10. Late payment adds a 10% penalty plus a collection cost.16Office of the Treasurer-Tax Collector, Riverside County, California. Tax Cycle Calendar and Important Dates to Remember
When a deadline falls on a weekend or holiday, it shifts to the next business day. Most counties accept payments online, by mail, or in person. If your mortgage lender pays through escrow, verify the payments posted on time; the penalty lands on you as the property owner.
Taxes still unpaid on July 1 enter default. From that point the balance accrues additional penalties of 1.5% per month on top of the original delinquent amount.17Orange County Treasurer-Tax Collector. Important Dates, Fiscal Year Begins July 1 After five years of default (three years for nonresidential commercial property), the tax collector can sell the property at public auction to recover the unpaid taxes.18California Legislative Information. California Revenue and Taxation Code 3691 The owner can redeem at any time before the sale by paying all delinquent taxes, penalties, and fees in full.
When Market Values Fall or Your Property Is Damaged
If your home’s market value drops below its factored base year value, the assessed value should drop too. Revenue and Taxation Code Section 51 requires the assessor to reduce assessed value to current market value when it falls below the factored base.19California Legislative Information. Revenue and Taxation Code – RTC In theory you don’t need to file anything. In practice, assessors can’t monitor every property every year, so you may need to ask for a review.
Most counties run an informal review where you submit comparable sales to the assessor at no charge. If the assessor agrees, your value drops without a hearing. If you disagree, or want to skip the informal step, you can file a formal appeal with the county Assessment Appeals Board. The regular filing window opens July 2 and closes either September 15 or December 1, depending on whether the assessor mailed value notices by August 1.20California State Board of Equalization. LTA 2025/020, County Assessment Appeals Filing Period There are no extensions. The strongest evidence in a residential appeal is recent comparable sales, often available from the county assessor’s website or a real estate agent.21California Department of Tax and Fee Administration. Assessment Appeals Frequently Asked Questions Once a reduction is granted, the property must be reviewed annually until market value recovers to the factored base year value.19California Legislative Information. Revenue and Taxation Code – RTC The old base doesn’t snap back the next year; it tracks the market on the way up.
Property damaged in a governor-proclaimed disaster can be temporarily reassessed. The damage must cause at least a $10,000 loss in current market value, and you have to file within 12 months of the disaster or the deadline set by county ordinance, whichever is later. If you rebuild in a similar manner, the pre-disaster Proposition 13 base year value stays with the property. Under Proposition 19, wildfire and natural disaster victims can also transfer the taxable value to any replacement primary residence in California purchased within two years of selling the damaged property.22California Department of Tax and Fee Administration. Disaster Relief
Deducting California Property Tax on Your Federal Return
California property taxes are deductible on your federal return as part of the state and local tax (SALT) deduction, but only if you itemize. For the 2026 tax year, the SALT deduction is capped at $40,400 for most filers, $20,200 for married filing separately.23Office of the Law Revision Counsel. 26 USC 164 That ceiling covers property taxes, state income taxes, and local taxes combined, so California homeowners who also pay the state’s high income tax rates can hit it quickly.
High earners face an added restriction. The $40,400 cap phases down by 30% of the amount your modified adjusted gross income exceeds $505,000 ($252,500 for married filing separately), though it won’t drop below $10,000 regardless of income.23Office of the Law Revision Counsel. 26 USC 164 The phasedown is scheduled through 2029, after which the cap drops to $10,000. Mello-Roos special taxes and other non-ad-valorem charges generally aren’t treated like standard property taxes for federal deduction purposes, so check with a tax professional before counting those line items.