Do Property Taxes Change When You Inherit a House in California?

When you inherit a house in California, the property taxes almost always change, and usually they go up. The county assessor treats the inheritance as a change in ownership and reassesses the home to its current market value, which can multiply the annual tax bill several times over. The one meaningful way to avoid that outcome under Proposition 19, which took effect February 16, 2021, is to move into the home as your primary residence within one year of the transfer and file the required paperwork. Even then, if the home has appreciated more than about $1 million above its old assessed value, part of the increase still comes through.

Why the Tax Bill Jumps

California’s property tax system runs on Proposition 13. A home’s assessed value, called its base year value, is set when the property is purchased or newly built, and it can rise no more than 2% per year after that. That is why long-held California homes are taxed on a fraction of what they would actually sell for. A change in ownership resets everything: the assessor reassesses to fair market value as of the date ownership changed, and inheriting counts as a change in ownership.¹

A home bought in the 1980s for $200,000 might sit on the tax roll today at around $400,000, producing a bill of roughly $4,000 to $5,000 a year. If that same home is now worth $1.5 million, a reassessment pushes the annual tax to something like $15,000 to $18,000. That is the jump heirs are trying to avoid.

The Only Way to Avoid Reassessment: Move In

Under Proposition 19, the exclusion from reassessment applies only if the inherited home becomes your own primary residence. Rentals, vacation homes, commercial property, and any real estate you don’t personally live in are reassessed to market value with no exceptions.² This is a sharp break from the old rules, and it catches many heirs off guard.

To qualify, all of the following must be true:

The transfer is between a parent and child, or between a grandparent and grandchild when the grandchild’s parents (who would have been the grandparent’s children) are deceased.
You begin using the home as your primary residence within one year of the transfer date, which is typically the date of death.²
You file for California’s homeowner’s exemption (or the disabled veterans’ exemption) within one year of the transfer. Filing later means the exclusion only runs from your filing date forward, not back to the date of death.³

Miss the one-year window, or don’t move in, and the property is fully reassessed. There is no partial credit for coming close.

The Value Cap on the Exclusion

Even when you qualify by living in the home, the exclusion isn’t unlimited. If the market value at the date of death exceeds the existing factored base year value by more than a set threshold, the excess gets added to the base year value. The threshold adjusts for inflation every two years.⁴

For transfers between February 16, 2025, and February 15, 2027, the threshold is $1,044,586. The next adjustment is scheduled for February 16, 2027.⁴

Here is how it works. Say a parent’s home has a factored base year value of $300,000 and a market value of $1,800,000 on the date of death. The gap is $1,500,000. Because that exceeds $1,044,586, the excess of $455,414 gets added to the base year value. Your new assessed value is $755,414. That is still far below the full $1.8 million market value, so the exclusion delivers real savings, just not complete protection. If the gap had been under $1,044,586, you would simply keep the parent’s base year value.

Forms and Deadlines

Two separate filings matter, and they have different purposes and deadlines.

Claiming the Reassessment Exclusion

File a claim with the county assessor’s office using the correct form:

Parent-child transfers on or after February 16, 2021: Form BOE-19-P, “Claim for Reassessment Exclusion for Transfer Between Parent and Child Occurring On or After February 16, 2021.”³
Grandparent-grandchild transfers on or after February 16, 2021: Form BOE-19-G.³

You also need to file for the homeowner’s exemption within one year to lock in the exclusion retroactive to the date of death. Filing that exemption late means the exclusion only applies going forward from the filing date, which can cost you a year or more of savings.

Reporting the Change in Ownership

Whether or not you qualify for any exclusion, you must report the ownership change. Two forms:

Preliminary Change of Ownership Report, Form BOE-502-A, filed with the county recorder when the new deed is recorded. Skipping it at recording can add a $20 fee.¹
Change in Ownership Statement — Death of Real Property Owner, Form BOE-502-D, filed with the assessor in every county where the decedent owned real property, within 150 days of the date of death.⁵

Missing the 150-day deadline on Form BOE-502-D carries a penalty of $100 or 10% of the property taxes based on the new assessed value, whichever is greater. For non-willful failures, the penalty caps at $5,000 if the property qualifies for the homeowner’s exemption and $20,000 if it does not. Willful failures have no cap. The penalty goes on the tax roll and is collected like any other delinquent tax.¹

Inheriting Through a Trust

Most California families with real estate use a revocable living trust, so this is the common case. Trust transfers qualify for the same exclusions as direct inheritance. The Board of Equalization looks through the trust to the actual beneficiary, and when beneficial ownership passes from a parent to a child, the parent-child exclusion applies just as it would with a will.⁶

A pitfall to know about: if the trustee has discretion to distribute assets non-pro-rata, and one child receives the house while siblings receive other assets, the exclusion only covers up to that child’s proportional share of the estate. Value above that share is treated as coming from a sibling, which doesn’t qualify and will be reassessed.⁶ The assessor may ask for a copy of the trust to verify who the beneficiaries are.

The trustee files Form BOE-502-D within 150 days of death, same as any other inherited property.⁵

When Siblings Inherit Together

If two or more children inherit a home together, each child who wants the exclusion has to use the property as a primary residence and file for it. If one sibling later moves out, another sibling has to file a new claim within one year of that move-out date to keep the exclusion in place.³

This creates real tension when one sibling wants to live in the home and another wants to sell. The selling sibling’s share will be reassessed. Families should work through this before the estate is distributed, because once the deed is transferred, the tax consequences are set.

Supplemental Tax Bills

Heirs who go through a reassessment should expect supplemental property tax bills. California issues a supplemental assessment any time a base year value changes outside the normal annual cycle, and the bill covers the difference between the old and new assessed values, prorated for the remainder of the fiscal year (California’s runs July 1 through June 30).

These bills arrive separately from the regular annual bill and often surprise heirs. If the reassessment straddles fiscal years, a second supplemental bill can follow for the next year. If you filed for the exclusion and it was granted, the supplemental should reflect the excluded value, not the full market value, so it’s worth checking that the assessor applied it correctly.

The Federal Stepped-Up Basis If You Sell

California property tax is one story; federal capital gains tax is another. When someone dies, the cost basis of their property is stepped up to the fair market value on the date of death.⁷ If you sell the inherited home, you only owe federal capital gains tax on appreciation above the date-of-death value, not on the decades of gain your parent accumulated.

Say your parent bought a home for $150,000 and it was worth $1.2 million at death. Your basis is $1.2 million. Sell it a year later for $1.25 million, and your taxable gain is $50,000, not $1.1 million. Sell quickly at or below the date-of-death value and you may owe nothing.

The stepped-up basis applies regardless of how you use the property or how California treats it for property tax purposes. You’ll generally need a qualified appraisal to establish the date-of-death value, and the basis you report has to be consistent with the value reported on any filed estate tax return.⁷ Getting that appraisal done soon after the death is easier than reconstructing the value years later.

1
California State Board of Equalization. Change in Ownership – Frequently Asked Questions
2
Board of Equalization. Proposition 19
3
California State Board of Equalization. Proposition 19 Fact Sheet
4
California State Board of Equalization. BOE Adjusts the Proposition 19 $1 Million Intergenerational Transfer Exclusion Amount
5
California State Board of Equalization. Change in Ownership Statement Death of Real Property Owner – BOE-502-D Sample
6
California State Board of Equalization. Exclusions from Reappraisal Frequently Asked Questions – Propositions 58/193
7
Internal Revenue Service. Gifts and Inheritances