Change in Ownership: California Property Tax Reassessment

In California, a change in ownership triggers a property tax reassessment: the county assessor wipes out the seller’s old, Prop 13-protected tax base and sets a new one equal to the property’s fair market value on the transfer date. That reset lands as a higher regular tax bill going forward and, separately, as a supplemental bill covering the rest of the fiscal year in which the transfer occurred. If the sale closes after January 1, two supplemental bills can arrive, each with its own delinquency date.

The reason the jump can be so severe is baked into California law. Once a base year value is set, it can grow by no more than the annual change in the California CPI, capped at 2% per year.¹ A home bought decades ago may carry an assessed value far below its market price, and the moment ownership changes, the assessor closes that gap in one step.²

What Counts as a Change in Ownership

Revenue and Taxation Code Section 60 defines a change in ownership as a transfer that meets three tests at once: it must convey a present interest (immediate rights, not a future claim), it must include the beneficial use of the property, and the value transferred must be substantially equal to the full fee interest.³ Miss any one of the three, and the transfer may not qualify.

A standard purchase is the obvious case. Section 61 lists several less intuitive ones.⁴

Creating a lease with a term of 35 years or more, including renewal options, counts as a transfer because the lessee gains effective control for a generation.
Transferring a fractional interest reassesses the portion that changed hands, even if the rest of the ownership stays put.
Moving property into a corporation, LLC, or partnership generally triggers reassessment, subject to the proportional-interest exclusion discussed below.
Gifts count. The law tracks the shift in control, not whether money changed hands.

Control of a Legal Entity

Property held by a corporation, LLC, or partnership gets reassessed when someone acquires more than 50% of the ownership interests in the entity, even though the deed to the property itself never changes.⁵ Buying 51% of a family LLC that owns a commercial building triggers reassessment of the building.

A separate trap catches investors who used the proportional-interest exclusion to move property into an entity without reassessment. If the original transferors later sell, cumulatively, more than 50% of their combined interests to outside parties, the property gets reassessed on the date that threshold is crossed.⁵ The careful structuring at formation does not immunize later partner turnover.

Death and Joint Tenancy

Death often triggers reassessment, but the mechanics depend on how title is held. When one joint tenant dies, Section 65 asks whether the survivor was an “original transferor,” meaning someone who helped create the joint tenancy.⁶ The other joint tenant’s death does not reassess property held by an original transferor. When the last original transferor dies, every previously sheltered interest gets reappraised at once.

Transfers by will, intestate succession, or a trust at death are changes in ownership unless a specific exclusion applies. The county assessor must be notified within 150 days of the date of death, and a Change in Ownership Statement is required even when the property was held in a trust.

Transfers That Do Not Trigger Reassessment

Several transfers are excluded by statute, but the exclusions are not automatic. You have to file the right claim form with your county assessor.

Between Spouses and Registered Domestic Partners

Section 63 excludes every transfer between spouses, whether during the marriage, as part of a divorce, or at death.⁷ The exclusion covers transfers into and out of trusts for a spouse’s benefit and the creation or termination of co-ownership held solely between spouses. Registered domestic partners get the same protection.⁸

Change in the Method of Holding Title

Moving property into a revocable living trust, or between entities, is excluded under Section 62 when each transferor’s proportional ownership stays exactly the same before and after.⁹ Individual owner into a trust with themselves as sole beneficiary: no reassessment. Individual owner into an LLC where their membership share mirrors their prior ownership: no reassessment. If the proportions shift at all, the exclusion fails.

Surviving Cotenant

Two people who co-own a home as joint tenants or tenants in common can qualify for the Section 62.3 cotenancy exclusion when one dies.¹⁰ The requirements are strict: the two individuals must have owned 100% of the property together, both must have been owners of record for at least one year before the death, and the home must have been the principal residence of both cotenants for that year. The survivor must end up owning the full 100% and must sign an affidavit confirming continuous residence. There is no filing deadline; if the assessor has already reassessed by the time the affidavit is filed, the exclusion applies retroactively to the date of death.

Parent-Child and Grandparent-Grandchild Transfers Under Proposition 19

Proposition 19, effective February 16, 2021, narrowed the family exclusion sharply. Section 63.1 now covers only a family home or a family farm.¹¹ Rental houses, vacation properties, and vacant land transferred between parents and children no longer qualify.

For a family home, the child must move in and use it as their principal residence within one year of the transfer and file for the homeowners’ exemption (or disabled veterans’ exemption) in the same window.¹² A family farm has no residency requirement, but the land must be in cultivation, used for pasture or grazing, or used to produce an agricultural commodity.

Even a qualifying transfer is capped. The excluded amount is the property’s factored base year value plus an inflation-adjusted allowance, set at $1,044,586 for transfers occurring between February 16, 2025, and February 15, 2027.¹³ Anything above that sum gets added to the transferred base. If a home has a factored base year value of $300,000 and a market value of $1,800,000, the excluded value is $1,344,586. The remaining $455,414 is added to the $300,000 base, producing a new taxable value of $755,414 rather than a full reset to $1,800,000.

Grandparent-to-grandchild transfers follow the same rules but only qualify when none of the grandchild’s parents (the grandparent’s children) are still living.¹¹ Claims must be filed within three years of the transfer or before the property is sold to a third party, whichever comes first.¹³ Filing late while you still own the property is allowed, but the exclusion only takes effect in the year of filing, not retroactively.

Taking Your Tax Base to a Replacement Home

Proposition 19 also lets certain homeowners carry their existing assessed value to a new primary residence anywhere in California. If you are 55 or older, severely disabled, or a victim of wildfire or natural disaster, you can transfer your base up to three times.¹⁴

The replacement can cost more than the original, but any excess is added to your transferred base. The “equal or lesser value” test slides with timing:¹⁵

Bought before the original home sells: replacement market value must not exceed 100% of the original’s market value.
Bought within one year after the sale: 105%.
Bought within two years after the sale: 110%.

Purchase or new construction of the replacement must happen within two years of selling the original.

Filing the Preliminary Change of Ownership Report

Every change in ownership has to be reported to the county assessor. The main form is the Preliminary Change of Ownership Report (PCOR), which asks for the parcel number, purchase price, transfer date, parties, and nature of the transaction. Claims of exclusion are noted on the form itself.

File the PCOR with the recorder when you record the deed. Skipping it lets the recorder charge an additional $20 fee under Section 480.3.¹⁶ If no PCOR is filed, the assessor will mail you a Change in Ownership Statement, which must be returned within 90 days of the request.¹⁷

Ignoring that statement is expensive. The penalty is $100 or 10% of the taxes on the new base year value, whichever is greater, up to $5,000 for property eligible for the homeowners’ exemption and up to $20,000 for property that is not.¹⁷

Appealing a Reassessment You Think Is Too High

Start with an informal review by contacting the county assessor’s office. Most assessors have an internal process where you can submit comparable sales or other evidence supporting a lower value, and many disputes end there.¹⁸

If that doesn’t work, file a formal Assessment Appeal Application with the clerk of the board in the county where the property sits. The regular filing period runs July 2 through either September 15 or November 30, depending on the county. For supplemental or escape assessments, the deadline is 60 days from the mailing date of the assessment notice.¹⁸

At the hearing, both sides present evidence to the county appeals board. Recent sales of comparable properties at prices below the assessor’s number are the strongest exhibit. The board can lower the value, leave it alone, or raise it, and its decision is final unless you file a challenge in superior court within six months.¹⁸

1
California Legislative Information. California Revenue and Taxation Code RTC 51
2
California Legislative Information. California Revenue and Taxation Code RTC 110-1
3
California Legislative Information. California Revenue and Taxation Code RTC 60 – Change in Ownership
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California Legislative Information. California Revenue and Taxation Code RTC 61 – Change in Ownership
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California Legislative Information. California Revenue and Taxation Code RTC 64
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California Legislative Information. California Revenue and Taxation Code RTC 65
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California Legislative Information. California Revenue and Taxation Code RTC 63
8
Los Angeles County Assessor. Registered Domestic Partners
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California Legislative Information. California Revenue and Taxation Code RTC 62
10
California State Board of Equalization. Change in Ownership Exclusion – Cotenants
11
California Legislative Information. California Revenue and Taxation Code RTC 63-1
12
California State Board of Equalization. Proposition 19 Fact Sheet
13
California State Board of Equalization. Proposition 19
14
Ventura County Assessor. Transferring Your Assessed Value
15
California State Board of Equalization. Property Tax Savings – Transfer of Property Tax Base to Replacement Property – Age 55 and Older
16
California Legislative Information. California Revenue and Taxation Code RTC 480-3
17
California State Board of Equalization. Change in Ownership – Frequently Asked Questions
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California State Board of Equalization. Assessment Appeals Frequently Asked Questions