Proposition 19 went into effect in two stages. The rules governing property transfers between parents and children, and between grandparents and grandchildren, became operative on February 16, 2021. The separate rules letting seniors, severely disabled homeowners, and disaster victims carry their property tax base to a replacement home took effect on April 1, 2021.1California State Board of Equalization. Proposition 19 California voters had approved the measure months earlier, on November 3, 2020.
Why the February 16, 2021 Date Matters for Inherited Property
For families, the February cutoff is the one to know. If a parent or grandparent died on or after February 16, 2021, the inheritance is governed by Proposition 19’s narrower rules. If they died before that date, the older, more generous rules of Propositions 58 and 193 still apply.
The transfer date for inherited property is the date of the owner’s death, not the date a deed is recorded or a trust is distributed. A parent who died on February 15, 2021 falls under the old rules even if the estate took many months to settle. A parent who died one day later does not.1California State Board of Equalization. Proposition 19
What Changed for Parent-Child and Grandparent-Grandchild Transfers
Before February 16, 2021, Propositions 58 and 193 let parents transfer a primary residence to their children with no cap on value, and the child did not have to live in the home. Parents could also transfer up to $1 million in assessed value of other real property — rentals, vacation homes, commercial buildings — without triggering reassessment.2California State Board of Equalization. Propositions 58 and 193 Frequently Asked Questions
Proposition 19 cut both benefits back. The exclusion for rental properties, vacation homes, and other non-primary-residence real estate was eliminated entirely. These properties now get reassessed to current market value when they pass to a child or grandchild.
For the family home itself, two new conditions apply. The child receiving the property must move in and use it as their own principal residence within one year of the transfer, and must file a claim for the Homeowners’ Exemption or Disabled Veterans’ Exemption within that same one-year window. If the child does not move in, the home is fully reassessed to current market value.1California State Board of Equalization. Proposition 19
The Value Cap on the Family Home Exclusion
Even a qualifying primary residence is only partially protected. The exclusion compares the property’s market value at the time of transfer to its factored base year value (the Prop 13 assessed value adjusted for annual inflation) plus a set dollar amount. That dollar amount started at $1 million in 2021 and has been inflation-adjusted since 2023. For transfers between February 16, 2025 and February 15, 2027, the figure is $1,044,586.1California State Board of Equalization. Proposition 19
If the home’s market value is at or below the factored base year value plus $1,044,586, the child inherits the parent’s assessed value with no bump. If market value exceeds that combined threshold, only the excess is added to the assessed value. A home with a factored base year value of $300,000 and a current market value of $1,500,000 gives a threshold of $1,344,586. The excess is $155,414, so the child’s new assessed value becomes $455,414 — still well under market.3County of Santa Cruz. Transfers of Property Between Parents and Children – Prop 19 Information
Grandparent-Grandchild Transfers
Grandparents can transfer property to grandchildren under the same framework, but only if all of the grandchild’s parents who qualify as children of the grandparent are deceased at the time of transfer. A stepparent (son-in-law or daughter-in-law of the grandparent) does not need to be deceased for the exception to apply.4New York Codes, Rules and Regulations. 18 CA ADC 462.520 – Change in Ownership – Intergenerational Transfers
Family Farms
Family farms get the same intergenerational protections as a family home. A qualifying family farm is real property used for cultivation, pasture, grazing, or producing agricultural products for commercial purposes. Each legal parcel making up the farm is treated as its own separate family farm, except for a parcel containing the family home, which is evaluated under the family home rules.5California State Board of Equalization. Implementation of Proposition 19 Intergenerational Transfer Exclusion
What Changed on April 1, 2021 for Seniors, Disabled Homeowners, and Disaster Victims
The second half of Proposition 19 expanded rather than narrowed. Starting April 1, 2021, eligible homeowners can transfer their property’s tax base to a replacement primary residence anywhere in California. The benefit is available to three groups: homeowners age 55 or older, those who are severely and permanently disabled, and victims of a wildfire or governor-declared natural disaster.6California Legislative Information. California Revenue and Taxation Code 69.6
Under the old Propositions 60, 90, and 110, this kind of base transfer was a one-time move, limited to the same county or to one of a small number of participating counties. Proposition 19 removed both of those restrictions. The replacement home can now sit in any California county, and seniors and disabled homeowners can use the transfer up to three times. Disaster victims face no numeric limit. Prior transfers used under the old Propositions 60, 90, or 110 do not count against the three allowed under Proposition 19.7California State Board of Equalization. Prop 19 Base Year Value Transfer Guidance Questions and Answers
To qualify, you must buy or finish building the replacement primary residence within two years of selling the original.
How the Tax Base Carries Over
If the replacement home is of equal or lesser value than the original, the old assessed value simply transfers. Property taxes stay essentially the same.
If the replacement is more expensive, the original assessed value still transfers, but the difference between the new home’s purchase price and the old home’s sale price is added on top. You pay taxes on the old base plus that difference, not on the replacement home’s full market value.1California State Board of Equalization. Proposition 19
“Equal or lesser value” has a built-in timing cushion. If you buy the replacement before selling the original, the new home must cost no more than 100% of the old home’s sale price. If you buy within the first year after selling, the threshold rises to 105%. If you buy in the second year after selling, it is 110%.1California State Board of Equalization. Proposition 19
A Note on Federal Taxes
Proposition 19 is a California property tax measure, so it does not change how the IRS treats a transfer. Inherited property still generally receives a stepped-up basis to fair market value on the date of the owner’s death, meaning capital gains tax on a later sale is calculated only against post-inheritance appreciation.8Internal Revenue Service. Gifts and Inheritances9Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 202610Internal Revenue Service. Instructions for Form 709 These federal rules operate independently of the Proposition 19 reassessment analysis.