How to Keep Your Parents' Low Property Tax Bill Under Prop 19

What You Stand to Lose If You Do Nothing

If you inherit a California home from a parent and simply let it pass into your name without taking the right steps, the county assessor will reassess the property at its current fair market value. For families in California's high-appreciation markets, that can mean a property tax bill that is three, four, or even ten times what the parent was paying.

Here is a concrete illustration. Your parent bought a home in the 1970s for $120,000. The assessed value, adjusted for the annual Prop 13 increases of 2% per year, might be around $280,000 today. The current market value is $1.4 million. At California's approximate 1.2% effective property tax rate, the difference in annual taxes is:

• Tax on $280,000 assessed value: approximately $3,360 per year
• Tax on $1,400,000 reassessed value: approximately $16,800 per year
• Annual difference: approximately $13,440 per year

Over 20 years, that is approximately $268,800 in additional property taxes. Preserving the low assessed value, if you qualify under Prop 19, is worth real money, and it is worth taking seriously.

The Primary Residence Requirement

Under Proposition 19, which took effect on February 16, 2021, a child who inherits a parent's primary residence can preserve the parent's low assessed value, but only if the child moves into the home and establishes it as their own primary residence within 12 months of the date of transfer. If the child does not move in within that window, or if the child moves out later and stops using it as a primary residence, the exclusion is lost and the property reassesses.

The 12-month clock starts on the date the property is transferred, which is typically the date the parent dies if the property passes through a trust or estate. If the property is in a living trust, transfer typically happens automatically upon the parent's death. If it goes through probate, the clock starts when title is formally transferred to the heir.

Acting quickly matters. If you know you want to keep the home, start the paperwork as soon as possible after the transfer date. Filing the BOE-19-P claim form late can result in the exclusion being denied even if you meet all other requirements.

The $1 Million Cap Explained With Math

Even when the primary residence requirement is met, Prop 19 imposes a $1 million cap on the exclusion benefit. Here is how it works in practice.

The county assessor compares the property's fair market value at the time of transfer to the parent's assessed value. If the market value exceeds the assessed value by $1 million or less, the property keeps the parent's assessed value entirely. If the gap exceeds $1 million, only the amount above the $1 million threshold is added to the assessed value.

Example: Parent's assessed value is $280,000. Market value at transfer is $1,400,000. The gap is $1,120,000. Subtract the $1 million cap, leaving $120,000. Add that $120,000 to the parent's assessed value: $280,000 + $120,000 = $400,000. The child pays taxes on $400,000, not $1,400,000. This is still a significant benefit, though smaller than under Prop 58.

Example 2: Parent's assessed value is $600,000. Market value is $1,400,000. The gap is $800,000, which is less than $1 million. The child keeps the full $600,000 assessed value, with no addition. The exclusion is complete.

Financing the Equalization Buyout

Many families face a practical obstacle to preserving the Prop 19 exclusion: when the home passes to multiple heirs, the sibling who wants to keep it must buy out the others. Without the funds to do so, the sibling cannot take full ownership, move in, and file the claim. The exclusion is lost.

A specialty trust loan or beneficiary buyout loan, secured by the inherited property itself, can provide the funds needed for the buyout. The sibling who stays takes out a loan against the property, uses the proceeds to pay the departing siblings their share, moves into the home, and files the BOE-19-P. The loan is repaid from refinancing or future savings.

North Coast Financial funds these equalization loans throughout California. Rates run from 9.5% to 10.95% with origination of 1.25 to 1.95 points. Most loans fund in 7 to 10 business days. There is no prepayment penalty, so when the heir refinances into a conventional loan after the property is in their name, they can pay off the bridge loan without penalty.

Filing the BOE-19-P

The BOE-19-P is California's Claim for Reassessment Exclusion for Transfer Between Parent and Child. It must be filed with the county assessor's office where the property is located. The form asks for information about the parent-child relationship, the property, the assessed value, and the child's intent to use the property as a primary residence.

There is a one-year deadline to file from the date of transfer. Filing late does not automatically disqualify the claim in all situations, but it complicates the process and may limit retroactive benefit. File early. If the form is filed while the property is still being transferred, the assessor may process it before any reassessment notice is issued, making the entire transition seamless.

Your county assessor's website has the current version of the form and instructions. The form itself is not complex, but the attached documentation requirements matter. See our dedicated BOE-19-P filing guide for a complete walkthrough of what to attach and the most common mistakes to avoid.

Frequently Asked Questions