How California Proposition 19 affects an inherited home's property taxes

What Proposition 19 actually changed

Before 2021, a child inheriting a parent's home in California could generally keep that parent's low property-tax bill no matter what they did with the home afterward — live in it, rent it out, keep it as a second home. California Proposition 19, passed by voters in November 2020, replaced that older rule with a much narrower one, effective February 16, 2021. Today, keeping the parent's lower assessed value only applies to a home that continues on as the family home — not to rental properties, vacation homes, or other investment property, which get reassessed to full market value the moment they change hands.

The two conditions that matter most

To keep the lower tax bill on an inherited home under Prop 19's parent-child exclusion, two things generally have to be true:

• The home was the parent's (or grandparent's) primary residence at the time of death.
• The heir moves into the home and makes it their own primary residence, generally within one year of the transfer.

Miss either condition and the property is reassessed to current market value, which on a home held for decades can mean a property tax bill many times higher than what the parent was paying.

The filing deadlines you don't want to miss

There are two separate deadlines running at the same time, and they're easy to lose track of during an already overwhelming year:

• The homeowners' exemption generally needs to be filed within one year of the transfer, as a prerequisite step.
• The reassessment exclusion claim itself (Form BOE-19-P for a parent-child transfer, or BOE-19-G for a qualifying grandparent-grandchild transfer) is generally due within three years of the transfer, or before the property is transferred to a third party, whichever comes first.

One practical note worth knowing: counties often reassess a property automatically once a new deed is recorded. If the exclusion claim isn't already on file when that happens, the family can end up paying the higher reassessed tax bill for a while before the exclusion is approved and any overpayment is refunded. Filing promptly, rather than waiting until close to the deadline, avoids that entirely.

There's a value cap, too

Even when a home qualifies for the exclusion, it isn't automatically 100% protected forever — there's a cap tied to the parent's existing assessed value, adjusted periodically by the state (it's generally just over $1 million above the parent's assessed value as of 2026, though the exact current figure moves every couple of years). If the home's market value exceeds that cap, the portion above it does get partially reassessed. Your county assessor or CPA can confirm the exact figure in effect right now.

What about capital gains?

Property tax reassessment and capital gains tax are two different things, and it's easy to conflate them. Generally, inherited property receives a “stepped-up” cost basis equal to its fair market value on the date of death, rather than what the parent originally paid for it decades earlier. That step-up can significantly reduce or even eliminate capital gains tax if the property is sold reasonably soon after inheriting it, since the taxable gain is measured from the stepped-up value, not the original purchase price. The probate referee's appraisal often plays a role in establishing that stepped-up value. As always, the exact numbers depend on your specific estate — this is a conversation for your CPA, not something to estimate on your own.