Quick Answer: Under Proposition 19, a Los Angeles County child (or grandchild, if the parents are deceased) can inherit a parent’s primary residence without a full property tax reassessment, but only if the heir also moves in and makes it their own primary residence, generally within one year of the transfer. The exclusion is no longer unlimited in value the way it was under old Proposition 58: if the home’s market value exceeds its taxable value plus an inflation-adjusted amount (roughly just over $1 million as of 2025-2027), the excess is added to the new taxable value. Claims must be filed with the LA County Assessor, generally within three years of the transfer, using Form BOE-19-P (or BOE-19-G for grandparent-to-grandchild transfers).
What Is the Prop 19 Parent-Child Exclusion?
If you’re an heir who just inherited a house in Los Angeles County, one of the first financial questions you’ll run into is property taxes. California generally reassesses property to current market value whenever it changes ownership, and after decades of appreciation, that can mean a tax bill many times higher than what your parents were paying. The parent-child exclusion, now governed by Proposition 19, is the narrow exception that lets an inherited family home keep some or all of its old, lower taxable value instead of resetting to today’s market price.
Proposition 19 passed statewide in November 2020 and took effect on February 16, 2021. It rewrote the rules that used to live under Proposition 58, and it applies to every county in California, including Los Angeles. The exclusion covers transfers between parents and children, and, when the child’s parents are no longer living, between grandparents and grandchildren. As a Certified Trust and Probate Specialist who works with LA County families almost every week, I can tell you this single rule change has reshaped how heirs think about keeping versus selling an inherited house.
How Is This Different From the Old Proposition 58 Rules?
Before February 2021, Proposition 58 let a parent transfer a primary residence to a child at any value, no cap, and the child kept the parents’ old assessed value regardless of whether the child ever lived there. Prop 58 also let a parent pass up to roughly one million dollars of factored base year value on other property, like a rental or vacation home, using the same exclusion.
Proposition 19 narrowed both pieces significantly. First, the exclusion for non-primary-residence property was essentially eliminated, with a narrow carve-out for certain family farms. If you inherit your parents’ rental property or a second home in the mountains, it no longer qualifies for this exclusion at all; it gets reassessed to current market value like any other sale. Second, even for the family home, the once-unlimited value protection now comes with a dollar cap, and the heir has to actually live in the home to keep the benefit. In short, Prop 19 traded a broad, hands-off exclusion for a narrower one aimed specifically at families who keep the home as an actual residence.
What Is the Primary Residence Requirement?
This is the part that trips up the most heirs. To qualify for the Prop 19 exclusion, the property must have been the parent’s (the transferor’s) principal residence, and the child or grandchild who inherits it generally must move in and establish it as their own principal residence, typically within one year of the transfer. The heir also needs to file a homeowners’ exemption (or disabled veterans’ exemption) claim with the Assessor to document that occupancy.
Timing matters here in a very practical way. Filing that homeowners’ exemption claim within one year of the transfer is generally what lets the exclusion apply retroactively back to the date of transfer. File later than that, and you may still be able to claim the benefit, but relief may only run from the date you actually file rather than from the transfer date itself, which can mean paying reassessed taxes for the gap period. Because the exact effect of a late filing can depend on your specific facts, it’s worth confirming your timeline directly with the LA County Assessor before you assume either outcome.
What this means practically for LA County families: if one sibling wants to keep the house and move in, the clock starts running the moment title (or beneficial ownership through a trust) passes. If nobody in the family intends to occupy the home as a primary residence, whether because everyone lives elsewhere, the plan is to rent it out, or the family has already decided to sell, this exclusion simply will not apply, and the property will be reassessed to market value once ownership transfers.
How Does the Prop 19 Value Cap Actually Work?
Even when an heir does move in, Proposition 19 no longer guarantees the full old tax basis carries over if the home has appreciated a lot. Instead, the law compares the home’s current fair market value at the time of transfer to the parent’s existing factored base year value (their current assessed value under Proposition 13) plus an additional allowance. That allowance started at one million dollars when Prop 19 took effect and is adjusted every two years for inflation by the Board of Equalization. For the period running from February 16, 2025 through February 15, 2027, that adjusted allowance is $1,044,586, on top of the parents’ existing assessed value.
If the home’s market value at transfer is at or below the parent’s taxable value plus that allowance, the child keeps the parents’ full assessed value with no increase at all. If the market value exceeds that combined figure, only the amount above the cap gets added to the new taxable value, rather than the entire market value becoming the new basis. That is a much better outcome than a full reassessment, but it is not the free pass Prop 58 used to offer on high-value homes.
| Scenario | Parent’s Factored Base Year Value | Home’s Market Value at Transfer | Value Cap (Base Year Value + $1,044,586) | Child’s New Taxable Value |
|---|---|---|---|---|
| Modest appreciation | $200,000 | $900,000 | $1,244,586 | $200,000 (full exclusion, no increase) |
| Significant appreciation | $200,000 | $1,800,000 | $1,244,586 | $755,414 (old value plus the $555,414 excess over the cap) |
Notice that in the second scenario, the child still comes out far ahead of a full market reassessment; they simply do not get the entire windfall of decades of appreciation tax-free the way an heir would have under the old rules. Because the inflation-adjusted allowance changes every two years, it’s worth confirming the current figure with the LA County Assessor or the Board of Equalization at the time you actually file, rather than relying on last year’s number.
What Are the Filing Deadlines and Forms in LA County?
To claim the exclusion in Los Angeles County, the transferee files Form BOE-19-P, “Claim for Reassessment Exclusion for Transfer Between Parent and Child,” with the LA County Assessor. The general filing window is within three years of the date of transfer, or before the property is later transferred to a third party, whichever comes first. There are also alternative deadlines tied to when the Assessor sends a supplemental or escaped assessment notice, which can extend the window in some cases.
Separately, and just as important, is the one-year deadline discussed above for filing a homeowners’ exemption claim to document that the heir actually occupies the home as a primary residence. These are two different filings with two different clocks, and missing either one can change your outcome. Given how much money is often at stake, I strongly encourage heirs to confirm exact current deadlines, any extensions, and required documentation directly with the LA County Assessor’s office, or with a tax professional, rather than relying on a general timeline.
Does the Exclusion Also Cover Grandparent-to-Grandchild Transfers?
Yes, with one extra condition. A grandchild can inherit a grandparent’s primary residence under this same framework, using Form BOE-19-G, but only if the grandchild’s parents (meaning the grandparent’s own children) have both already passed away. If either parent is still living, the property is expected to pass through that parent first, so a direct grandparent-to-grandchild transfer generally will not qualify for the exclusion. Every other rule discussed above, the primary residence requirement, the value cap, and the filing deadlines, applies the same way to grandparent-grandchild transfers as it does to parent-child transfers.
How Does This Play Out in a Trust or Probate Sale?
This is where the rubber meets the road for most of the families I work with. An inherited home rarely passes to just one person with a simple plan; it usually moves through a living trust, a probate administration, or both, and often involves multiple siblings with different goals. A few practical points matter here.
First, the parent-child exclusion applies regardless of the legal vehicle used to pass the property, whether that’s a living trust distribution, a will going through probate, or intestate succession when there is no will. What matters to the Assessor is the family relationship and whether the residency and filing requirements are met, not whether a trustee or a probate court handled the paperwork.
Second, in a common scenario where several siblings co-inherit a home and only one wants to live in it, that sibling may be able to buy out the others (often through a trust or probate loan) and then claim the exclusion on their share, provided they move in and file on time. If no sibling wants to occupy the property, the family typically markets it for sale during trust administration or probate, and the buyer’s purchase resets the taxable value to the sale price regardless of what happens with this exclusion. In that situation, the exclusion mainly matters for the short window between the parent’s passing and the closing of the sale, when the estate or trust may still want to keep carrying costs, including property tax, as low as possible.
Third, timing your decision matters. Because the homeowners’ exemption filing window is generally just one year, families who are debating whether to keep the home or sell it should factor that deadline into the conversation early, ideally with guidance from a probate attorney or CPA who can look at your specific trust or estate. Waiting too long to decide can quietly close the door on the exclusion even if the family later decides someone wants to move in.
What Should LA County Heirs Do Next?
If you’ve recently inherited, or expect to inherit, a home anywhere in Los Angeles County, from Burbank and Glendale to the San Fernando Valley and beyond, it’s worth getting a clear picture of three numbers before you decide anything: the parent’s current factored base year value on the most recent tax bill, a realistic current market value for the home, and the current inflation-adjusted cap from the Assessor or Board of Equalization. Those three figures will tell you roughly what property taxes would look like if a family member moves in versus what a sale would net the estate after taxes and closing costs.
From there, loop in a probate or trust attorney and, if a sale is even a possibility, an agent who regularly handles trust and probate transactions in your specific market. The right sequencing of the Prop 19 filing, any buyout between siblings, and the eventual sale (if that’s the direction the family chooses) can meaningfully affect how much value the family actually keeps.
Frequently Asked Questions
What is the Prop 19 parent-child exclusion?
It’s a California property tax rule that lets a child inherit a parent’s primary residence without a full reassessment to current market value, as long as the child also makes the home their own primary residence and files the required claim on time. It replaced the older, more generous Proposition 58 exclusion starting February 16, 2021.
Does Prop 19 apply to grandparent-to-grandchild transfers?
Yes, but only if the grandchild’s parents, who would otherwise be the grandparent’s children, have both already passed away. If a parent in that middle generation is still living, a direct grandparent-to-grandchild transfer typically will not qualify. The grandchild files Form BOE-19-G instead of BOE-19-P.
What is the current Prop 19 value cap amount?
The cap is the parent’s existing factored base year value plus an inflation-adjusted allowance set by the Board of Equalization, updated every two years. For transfers occurring between February 16, 2025 and February 15, 2027, that allowance is $1,044,586. Confirm the figure in effect at the time of your transfer, since it changes on a biennial cycle.
Do I have to move into the inherited house to keep the low property tax base?
Generally, yes. The home must have been the parent’s primary residence, and the child (or grandchild) must also establish it as their own primary residence, typically within one year of the transfer, and file a homeowners’ exemption claim to document that occupancy. Without that occupancy, the exclusion generally does not apply.
What happens if I rent out the inherited home instead of living in it?
If the property is not used as the heir’s primary residence, it will not qualify for the parent-child exclusion and will typically be reassessed to current market value upon transfer. This is a significant change from the old Proposition 58 rules, which did not require the child to occupy the home.
What form do I need to file with the LA County Assessor?
Parent-child transfers use Form BOE-19-P, “Claim for Reassessment Exclusion for Transfer Between Parent and Child.” Grandparent-grandchild transfers use the equivalent Form BOE-19-G. Both are filed with the Los Angeles County Assessor’s office.
What is the filing deadline for the Prop 19 exclusion claim?
The reassessment exclusion claim generally must be filed within three years of the transfer, or before the property is later sold to an unrelated third party, whichever happens first. Separately, the homeowners’ exemption claim that documents occupancy is generally due within one year of the transfer to secure relief back to the transfer date. Confirm both deadlines with the Assessor, since alternative windows can apply depending on when a supplemental assessment notice is issued.
Can siblings split an inherited home and each keep the parents’ tax base?
The exclusion is generally tied to the property becoming a qualifying heir’s primary residence, not simply to co-ownership. A common approach is for one sibling to buy out the others, often using a trust or probate loan, and then move in and claim the exclusion on their resulting ownership share. A probate or trust attorney can help structure this correctly.
How does this affect selling an inherited home through probate or a trust?
The exclusion applies regardless of whether the transfer happens through a living trust, a will in probate, or intestate succession; what matters is the family relationship and the residency and filing requirements. If the family ultimately sells to a buyer outside the family, that sale resets the taxable value to the sale price for the new owner, separate from anything the exclusion did during the estate’s administration.
Is there an income limit for the Prop 19 parent-child exclusion?
No. The exclusion does not have an income or household earnings test. The two main tests are the primary residence and occupancy requirement and the inflation-adjusted value cap; there is no separate limit based on how much the heir earns.
This article is provided for general informational purposes only and is not legal or tax advice; property tax rules, value caps, and filing deadlines change, so please verify current figures and deadlines with the Los Angeles County Assessor’s office or a qualified tax professional before relying on them.
About Will Flannigan
Will Flannigan is a California licensed real estate agent (DRE #01951292) and Certified Trust & Probate Specialist (CTPS) with The Nell Team at Equity Union Real Estate. A former attorney, Will brings a background in property management and over a dozen home flips to every transaction, and has been licensed since 2014. A 20+ year resident of Burbank Rancho, Will specializes in Burbank, Altadena, Pasadena, Glendale, and the greater San Gabriel Valley, with fluency in Mandarin serving clients in San Marino and beyond.
Navigating an inherited property and Prop 19 in LA County? I work with heirs and trustees through exactly this kind of transition.
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