What did Proposition 19 change about California property tax reassessment?
Edvin Givargis Published 11 minute read
The short answer
Proposition 19 narrowed one of the most valuable exceptions to California's reassessment rule and widened another. Under Proposition 13, real property is taxed on its acquisition value, and a change in ownership resets that value to market. Before February 16, 2021, a transfer between parents and children escaped reassessment entirely for the parent's principal residence, at any value, and for the first $1 million of other real property per parent, so rental buildings, vacation homes, and commercial property could pass down a generation at their decades-old assessed values. For transfers on or after February 16, 2021, Cal. Const. art. XIII A, section 2.1(c) and Rev. and Tax. Code section 63.2 limit the exclusion to a family home or family farm, require that the home become the transferee's own principal residence, and cap the benefit at the prior taxable value plus an inflation-adjusted amount that is $1,044,586 for transfers from February 16, 2025 through February 15, 2027. All other property passing to children is reassessed. In exchange, for transfers on or after April 1, 2021, section 2.1(b) and Rev. and Tax. Code section 69.6 allow homeowners 55 and older, severely disabled homeowners, and victims of wildfire or natural disaster to carry the taxable value of a principal residence to a replacement home anywhere in California, of any value, within two years of the sale, with the age and disability categories limited to three transfers. The deadlines attached to both regimes decide whether the benefit exists at all.
The Proposition 13 baseline
California's property tax rests on three rules in article XIII A of the California Constitution. The tax may not exceed 1 percent of full cash value (section 1(a)). Full cash value is the 1975-76 assessed value or, after that, the appraised value when property is purchased, newly constructed, or changes ownership (section 2(a)). And that base year value may rise each year only by inflation, not to exceed 2 percent (section 2(b)). The combined effect is that assessed value drifts far below market for anyone who holds property for long, and the change in ownership, not the passage of time, is what closes the gap. Every exclusion from change in ownership is therefore worth the difference between an old base year value and today's market, compounded over the years the owner or the owner's family keeps the property.
The intergenerational exclusion after February 16, 2021
The former exclusion, in section 2(h) of article XIII A and Rev. and Tax. Code section 63.1, covered the principal residence of the transferring parent with no value limit and the first $1 million of full cash value of all other real property of each parent, with full cash value measured for this purpose by the property's factored base year value, its assessed value, rather than its market value (Rev. and Tax. Code section 63.1(c)). Rental property worth several times $1 million at market could therefore pass untouched if its assessed value sat under the limit. The child did not have to live in the house. Section 2.1(d) confines that regime to purchases and transfers occurring on or before February 15, 2021.
For transfers on or after February 16, 2021, the exclusion reaches only a family home or a family farm. A family home is a principal residence eligible for the homeowners' or disabled veterans' exemption (section 2.1(e); Rev. and Tax. Code section 63.2). The property must be the family home of the transferor and must continue as the family home of the transferee, which in practice means a child must move in and make it a principal residence. BOE guidance treats the requirement as met if the property becomes a transferee's principal residence within one year after the transfer, and where several children inherit, occupancy by one eligible child is enough (BOE Letter To Assessors No. 2026/026). A family farm is real property under cultivation, used for pasture or grazing, or used to produce an agricultural commodity, with no residence required (section 2.1(e)). Grandparent-grandchild transfers qualify on the same terms only if all of the grandchild's parents who are children of the grandparents are deceased as of the transfer date (section 2.1(c)).
The exclusion is capped. If the family home's full cash value on the transfer date does not exceed its factored base year value plus the exclusion amount, the transferee keeps the prior taxable value. If it does, the excess over that sum is added to the prior taxable value (section 2.1(c); Rev. and Tax. Code section 63.2). The original $1 million amount is adjusted every other February 16, beginning in 2023, by the change in the Federal Housing Finance Agency House Price Index for California. The Board of Equalization set it at $1,022,600 for February 16, 2023 through February 15, 2025, and at $1,044,586 for February 16, 2025 through February 15, 2027 (BOE Letters To Assessors Nos. 2023/012 and 2025/009). As an illustration, a home with a factored base year value of $500,000 and a market value of $2,000,000, transferred in 2026, has a cap of $1,544,586; the $455,414 excess is added, and the child's new taxable value is $955,414.
Two further conditions carry most of the risk. First, the transferee must claim the homeowners' or disabled veterans' exemption within one year of the transfer to receive the benefit from the transfer date, with a refund of taxes paid in the interim (section 2.1(c)); a later exemption claim yields relief only prospectively (BOE Letter To Assessors No. 2026/026). Second, the exclusion lasts only while the property remains the family home of an eligible transferee. When it stops qualifying, the assessor enrolls, as of the next lien date, the base year value established as of the transfer date, adjusted for inflation (BOE Letter To Assessors No. 2026/026). Rental property, second homes, commercial buildings, and any home no child occupies are reassessed on transfer.
What Proposition 19 gave in exchange
Before April 1, 2021, the base year value transfer for homeowners 55 and older or severely disabled, under Propositions 60, 90, and 110, was a one-time benefit, generally limited to replacement homes in the same county or in a county that had elected to accept such transfers, and limited to a replacement of equal or lesser value. Section 2.1(b) and Rev. and Tax. Code section 69.6 replaced that framework for transfers on or after April 1, 2021. An owner of a primary residence who is 55 or older, severely disabled, or the victim of a wildfire or natural disaster may transfer the taxable value of that residence to a replacement primary residence purchased or newly constructed within two years of the sale of the original, anywhere in the state and regardless of value. BOE guidance treats the April 1, 2021 date as satisfied if at least one of the two transactions, the sale or the purchase, occurs on or after that date (BOE Letter To Assessors No. 2021/019).
The value comparison drives the result. A replacement is of equal or lesser value if its full cash value does not exceed 100 percent of the original's sale value when bought before the sale, 105 percent when bought within the first year after the sale, or 110 percent when bought within the second year (Rev. and Tax. Code section 69.6; Property Tax Rule 462.540). An equal or lesser value replacement takes the original's factored base year value unchanged. A more expensive replacement takes that factored base year value plus the difference between its full cash value and the original's full cash value as adjusted under the percentage test (Property Tax Rule 462.540). The Board's own example: an original home sold for $700,000 with a factored base year value of $331,223, and a replacement bought within the following year for $750,000, exceeds the 105 percent threshold of $735,000 by $15,000, producing a new taxable value of $346,223 (BOE Letter To Assessors No. 2024/044). Owners in the age and disability categories may use the transfer three times, and BOE guidance does not count transfers made under the earlier propositions toward that limit (BOE Letter To Assessors No. 2021/019). Disaster victims are not subject to the three-transfer limit (Property Tax Rule 462.540). The disaster provisions carry their own eligibility conditions, which a companion article in this library on wildfire property tax relief addresses.
Planning consequences
The change produced an immediate pattern: families that understood the rules recorded parent-child transfers of rental and vacation property in the weeks before February 16, 2021 to fall under the old exclusion, and those transfers still needed timely section 63.1 claims to hold the benefit. Transfers made in that window deserve a records check if a claim was never filed or was denied.
Entity structures do not offer a way around the new limits. The intergenerational exclusion applies only to transfers of real property interests, not to transfers of interests in legal entities, and BOE guidance treats even a single-member limited liability company as a separate entity whose property does not qualify (BOE Letter To Assessors No. 2026/026). A family that moves a home into a company before death may forfeit the exclusion it was trying to keep. Transfers of entity interests are instead tested under the change in control and original co-owner rules of Rev. and Tax. Code section 64(c) and (d), which reassess the entity's real property when one person or entity obtains more than 50 percent control, or when original co-owners cumulatively transfer more than 50 percent. A companion article in this library, on California documentary transfer tax when control of an entity changes, works through how a change in control reaches the entity's real property.
The estate-planning reset is the longer-lasting consequence. Holding low-basis, low-assessment real estate until death once preserved both the old assessed value for the next generation and the income tax basis adjustment at death. For anything other than a family home a child will occupy, and for any home worth more than the capped amount, the property tax half of that bargain is gone or reduced; the assessment resets at death regardless. The decision to hold, sell, or gift during life now trades the income tax consideration against a property tax cost that no longer depends on when the property passes.
Proposals to restore the former exclusion have circulated, including an initiative constitutional amendment cleared for signature gathering in November 2025, but no such measure appears among those qualified for the November 3, 2026 statewide ballot.
Practice notes
Eligibility under Proposition 19 turns on dates more than on facts. For an intergenerational transfer, the transferee's homeowners' or disabled veterans' exemption claim within one year of the transfer is what secures the benefit from the transfer date; the separate exclusion claim is due within three years of the transfer or before a transfer to a third party, whichever is earlier, or within six months after the mailing of a supplemental or escape assessment notice (Rev. and Tax. Code section 63.2; BOE Letter To Assessors No. 2026/026). For a base year value transfer, the replacement must be bought or built within two years of the sale, and the claim is due within three years of the replacement's purchase or completion, with only prospective relief after that (Rev. and Tax. Code section 69.6; BOE Letter To Assessors No. 2024/044). The documentation that decides disputed claims is ordinary but easy to lose: the date-of-death or transfer date, evidence that the home was the transferor's principal residence, proof of the transferee's occupancy and exemption filing, the trust instruments that establish beneficial ownership, and, for replacement homes, closing statements for both properties. Any transfer of family real property, any funding of a trust or company with real property, and any purchase of a replacement home by an eligible owner should be analyzed before the deed is recorded, because the Preliminary Change of Ownership Report filed with the deed frames the assessor's first look, and the value cap, the occupancy requirement, and the entity rules can each convert an intended exclusion into a full reassessment. G&G State Tax Group provides property tax change in ownership analysis and reassessment exclusion support alongside its state and local tax practice.
This article states the law as of September 26, 2026
Statutes, rates, thresholds, and agency practice change, and a different set of facts can change the answer. Before acting on anything discussed above, contact G&G State Tax Group, or another state and local tax adviser, to confirm what has changed since this was written and how the rules apply to a specific situation.
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