If you've inherited a home in California and are deciding whether to keep it or sell it through probate, there's a factor many families overlook until the tax bill arrives: Proposition 19. Passed by California voters in 2020 and in effect since February 2021, Prop 19 dramatically changed how inherited property is taxed — and for many heirs in San Diego County, the new rules mean a property tax bill that's 3 to 5 times higher than what their parents paid.
What Prop 19 Changed
Under the old rules (Propositions 58 and 193), children could inherit their parents' property tax basis — often locked in at values from decades ago — regardless of whether they lived in the home. A parent who bought a house in Chula Vista for $85,000 in 1985 might have been paying property taxes on an assessed value of $250,000, and their children would continue paying at roughly that same level after inheriting.
Proposition 19 eliminated that automatic protection. Now, the parent-child exclusion applies only to a primary residence, and only if the inheriting child moves in within one year and files the required paperwork with the county assessor. Rental properties, vacation homes, and second homes get fully reassessed to current market value at the date of death — no exceptions.
The Numbers: What Reassessment Actually Costs
Here's what full reassessment looks like in San Diego County, where the median home price hovers around $900,000:
| Scenario | Parent's Assessed Value | Market Value at Death | Old Annual Tax (~1.2%) | New Annual Tax (~1.2%) | Increase |
|---|---|---|---|---|---|
| El Cajon family home | $310,000 | $850,000 | $3,720 | $10,200 | +$6,480/yr |
| San Diego rental condo | $220,000 | $620,000 | $2,640 | $7,440 | +$4,800/yr |
| Oceanside primary home | $390,000 | $1,100,000 | $4,680 | $13,200 | +$8,520/yr |
If the property was a rental or vacation home — common in Palm Springs and coastal San Diego — reassessment is mandatory. There is no exemption, no cap, and no workaround. The new assessed value equals the fair market value on the date of death, and the new tax bill follows 30 to 60 days later.
The Primary Residence Exception (and Its Limits)
If the inherited home was the parent's primary residence, the child can still claim a partial exclusion — but it's not unlimited. The child must:
- Make the property their primary residence within one year of the transfer (typically the date of death)
- File Form BOE-19-P with the county assessor within 3 years of transfer (or before selling to a third party — whichever is earlier)
- File for the homeowner's exemption within one year
Even then, the exclusion is capped. For 2025-2026, the cap is $1,044,586 above the parent's factored base year value. If the market value exceeds that ceiling, the excess is added to the assessed value. In San Diego's higher-priced neighborhoods — La Jolla, Del Mar, Rancho Santa Fe — most inherited homes exceed the cap, meaning even qualifying heirs face partial reassessment.
What This Means For Your Sale Decision
Prop 19 has made selling the more attractive option for many heirs. If you can't or won't move into the inherited property within one year — or if the property was a rental — the tax burden jumps immediately. Here's how to think about it:
- Run the tax math before deciding. Contact the San Diego County Assessor's office or check the current assessed value online. Multiply by roughly 1.2% for the existing tax. Then estimate the new tax at 1.2% of current market value. The difference may be thousands of dollars per month.
- Factor carrying costs into your timeline. Every month you hold the property, you're paying the new higher tax rate, plus mortgage, insurance, utilities, and maintenance. In San Diego County, carrying costs for a vacant inherited home can easily exceed $4,000-$6,000 per month.
- Consider selling before the reassessment hits. If you plan to sell anyway, doing so promptly after probate opens avoids months of elevated tax payments and frees up the estate's cash.
Prop 19 didn't just change tax law — it changed the math of whether keeping an inherited home makes financial sense. For most California heirs, understanding the reassessment numbers is the first step in making the right call. At SoCal Probate Homes, we help families in San Diego County and the Coachella Valley work through these numbers before they list, so there are no surprises when the tax bill arrives.
Don't Forget: Prop 19 Also Helps Seniors Downsize
On the positive side, Prop 19 expanded portability for homeowners 55 and older. A parent who sold their longtime home and bought a replacement anywhere in California can now transfer their old assessed value up to three times — a significant benefit for families planning ahead. But for heirs already in probate, the new inheritance rules are what matter, and they're not retroactive.
This is general information, not legal or tax advice. California property tax laws are complex and your situation may involve trust structures, multiple heirs, or other factors that change the outcome. Always consult a qualified California probate attorney or tax professional before making decisions based on property tax exposure.