He had always assumed the house would pass to his children the way his parents’ house had passed to him—with the property tax staying roughly the same. He grew up believing that a family home in California was a legacy in the truest sense: an asset that could stay in the family across generations without becoming a financial burden.
It was a question he asked almost casually during his estate planning meeting: What happens to the property tax when we’re gone?
The answer surprised him.
This is the conversation I have with more Bay Area families than any other in 2026. Proposition 19 changed the rules that many parents in this region grew up believing were permanent. Most families don’t realize those rules have changed until they sit down with an attorney to plan—or worse, until a parent has passed away and a child is trying to make sense of an unexpected property tax bill.
Over my 20 years as an estate planning attorney, I’ve learned that the family home is about much more than its market value. For most Bay Area families, it’s where they raised their children, built their lives, and created important memories. At the same time, for many of my clients in Walnut Creek, Concord, Pleasant Hill, Lafayette, Orinda, Moraga, Danville, and San Ramon, it is also their largest financial asset and often one of the most important parts of the legacy they hope to leave behind.
That’s why one conversation comes up almost every week. A client will say, “I just want to make things easy for my kids.” They assume that once they’ve created a trust, everything—including property taxes—will simply work itself out.
I wish it were that simple.
Since Proposition 19 changed California’s property tax rules, I’ve seen well-intentioned families unknowingly leave their children facing a much larger property tax burden than they ever expected. That’s why planning for Proposition 19 has become an essential part of how I help families protect the homes—and the legacy—they’ve worked so hard to build.
What Proposition 19 Changed
Before Proposition 19 took effect, transferring property from parents to children was often much simpler from a property tax standpoint. Transfers that occurred before February 16, 2021, were generally governed by the older parent-child exclusion rules under Propositions 58 and 193. Those rules allowed many families to transfer real estate without triggering reassessment.
For transfers occurring on or after February 16, 2021, the rules became significantly more restrictive.
Today, in most situations:
- The inherited property must have been the parent’s principal residence.
- The child must move into the home and establish it as their own principal residence within one year of the transfer.
- The child must file for the California Homeowners’ Exemption in a timely manner to preserve the exclusion.
- The property qualifies only up to the allowable exclusion amount. For transfers occurring between February 16, 2025, and February 15, 2027, California allows the property’s existing taxable value to be preserved plus an inflation-adjusted exclusion of $1,044,586. If the home’s fair market value exceeds that threshold, the excess value is added to the property’s taxable value, resulting in a partial reassessment rather than a complete one.
- A separate exception continues to exist for qualifying family farms.
Those changes can have a major financial impact—especially here in the East Bay, where property values have experienced substantial growth over the years.
Why East Bay Families Need to Pay Attention
I’ve seen firsthand how dramatically East Bay real estate has appreciated. I’ve sat with families who bought their Walnut Creek or Danville home in the 1980s, never imagining it would one day be worth several million dollars. They’re understandably proud of what they’ve built—but they’re also surprised when they learn what Proposition 19 could mean for their children.
The numbers become much easier to understand when you see how they work in practice.
Consider a family who purchased their Walnut Creek home in 1985 for $180,000. After annual inflation adjustments over four decades, their factored base year value might be approximately $400,000.
Today, that same home is worth $1.8 million.
Here’s how the calculation works:
- Current factored base year value: approximately $400,000
- 2025-2027 Proposition 19 exclusion amount: $1,044,586
- Combined exclusion threshold: $1,444,586
Because the home’s fair market value is $1,800,000, it exceeds the allowable threshold by approximately $355,414.
Under Proposition 19, that excess is added to the existing taxable value rather than triggering a complete reassessment.
The result would look like this:
- Original taxable value: $400,000
- Excess market value: $355,414
- New taxable value: approximately $755,414
Assuming an overall effective property tax rate of about 1.2% in Contra Costa County (including voter-approved local assessments, which vary by location), the annual property tax bill would increase from roughly $4,800 to approximately $9,100—an increase of about $4,300 per year.
That’s certainly better than paying taxes on the home’s full $1.8 million market value, which could produce an annual property tax bill of roughly $21,600 at the same effective rate. But it’s also a meaningful increase that many families don’t anticipate.
I want everyone to understand the rules while they still have choices. A little planning today can prevent difficult surprises for your children years from now.
Why Planning Matters
One misconception I hear often is, “My children will inherit the house, so everything will stay the same.”
The ownership may transfer, but the property tax consequences may not.
That’s why I don’t view estate planning as simply preparing legal documents. We look at how your trust, your real estate, your family’s goals, and California’s current laws all work together. Every recommendation starts with your family’s goals, your assets, and your unique circumstances—not with a one-size-fits-all solution.
Planning Strategies That Can Make a Difference
Thoughtful planning isn’t about finding loopholes. It’s about understanding the rules early enough to make informed decisions before life makes them for you.
Depending on your family’s circumstances, we may discuss:
- How the current parent-child exclusion applies to your home.
- Whether an heir intends to make the property their principal residence.
- How your trust coordinates with real estate ownership.
- Whether an older estate plan should be updated to reflect Proposition 19.
- Strategies that align your estate plan with both your family goals and your property holdings.
No two families have the same priorities, which is why every plan should reflect your specific goals.
Proposition 19 Also Created Opportunities
While much of the discussion around Proposition 19 focuses on inherited property, the law also expanded benefits for many California homeowners.
Homeowners who are age 55 or older, severely disabled, or victims of qualifying natural disasters may now transfer their Proposition 13 taxable value to a replacement primary residence anywhere in California, subject to the law’s requirements. For homeowners age 55 and older, that transfer can generally be used up to three times.
For some families, this creates new flexibility to downsize, move closer to children or grandchildren, or relocate without giving up the property tax benefits they’ve accumulated over decades.
Like many California laws, Proposition 19 created both opportunities and challenges. Understanding which side of the law applies to your family is an important part of good estate planning.
Estate Planning Is an Ongoing Process
One thing I remind clients is that planning for your family’s future isn’t about filling out forms or checking a box. The best planning happens before there’s a crisis—whether you’re preparing for changes in California property tax law or thinking ahead about the possibility of long-term care. I recently wrote about why so many Bay Area families wait too long to begin Medi-Cal planning, and the same principle applies here: having time gives you more options.
Some of the best meetings I have don’t focus on legal documents at all. We spend our time talking about family dynamics. Will one child live in the home? Will the property become a rental? Is keeping the house in the family even the right decision?
Those conversations often uncover planning opportunities that wouldn’t be obvious if we only looked at the paperwork.
Frequently Asked Questions
Does Proposition 19 eliminate the parent-child exclusion?
No. Proposition 19 did not eliminate the parent-child exclusion, but it significantly narrowed it. Before February 16, 2021, many parents could transfer a primary residence—and, in some cases, additional real property—to their children without triggering reassessment. Today, the exclusion generally applies only to a parent’s principal residence. If the home’s fair market value exceeds the allowable threshold, the excess value is added to the inherited taxable value, resulting in a partial reassessment.
Can my children inherit my home without property taxes increasing?
Yes—but only if the transfer satisfies Proposition 19’s requirements. In general, the inherited home must have been your principal residence, your child must make it their principal residence within one year, timely file for the California Homeowners’ Exemption, and the home’s fair market value must not exceed the property’s factored base year value plus the applicable inflation-adjusted exclusion amount. If those requirements are not met, or if the home’s value exceeds the allowable threshold, some or all of the property may be reassessed.
Why does Proposition 19 affect Bay Area families so much?
The law has its greatest impact in areas where homes have appreciated significantly over time. Many Bay Area homeowners purchased their homes decades ago and still have relatively low assessed values under Proposition 13, while today’s market values may be several times higher. Because Proposition 19 compares the home’s current market value to its existing taxable value, longtime homeowners in communities like Walnut Creek, Lafayette, Orinda, Danville, and San Ramon are more likely to exceed the exclusion amount and face a partial reassessment.
Should I review an older estate plan?
Yes. If your estate plan was prepared before Proposition 19 became effective on February 16, 2021, it may have been designed around property tax rules that no longer exist. Even if your trust is still legally valid, it is worth reviewing whether your plan still accomplishes your goals under current law, particularly if your estate includes California real estate that has appreciated substantially in value. Our recent article on 2026 California estate planning updates discusses several other legal changes that may also affect your plan.
Can a trust alone prevent property tax reassessment?
No. A revocable living trust generally does not determine whether property taxes are reassessed. Proposition 19’s property tax rules apply regardless of whether property passes through a trust, a will, or by operation of law. However, certain irrevocable trust structures can affect the property tax analysis differently, depending on the terms of the trust and the applicable California property tax rules. The trust controls who inherits the property and how it is administered, but eligibility for the parent-child exclusion depends on California’s property tax statutes, including occupancy requirements, filing deadlines, and the property’s value. That’s why effective planning coordinates your trust, your real estate ownership, and the tax rules rather than relying on any single document..
Final Thoughts
If there’s one thing I’ve learned over my 20 years as an estate planning attorney helping Bay Area families, it’s that estate planning is about much more than preparing legal documents.
A trust by itself doesn’t determine whether property taxes will increase. Neither does a deed, a will, or any single document. The outcome depends on how your estate plan, your real estate, your family’s goals, and California’s property tax laws all work together.
That’s why I often tell clients, “The plan is not the documents. The plan is the way the documents work together to accomplish your goals.”
I believe that’s what distinguishes thoughtful estate planning. A trust is important. A will is important. Powers of attorney are important. But none of those documents exists in isolation. They should work together with the way your assets are titled, with your family’s wishes, and with California law to create a plan that’s both legally sound and practical for the people you love.
At the end of the day, Proposition 19 isn’t really about property taxes. It’s about making thoughtful decisions so the home you’ve spent a lifetime building can continue to support the people you love in the way you intended.
Estate planning addresses many important factors about your future and your legacy. Where do you get started if you don’t have an estate plan in place? If you do, how have new laws and life transitions changed it? Will your plan still protect you? Regardless of where you are, you deserve to have control over your wants, needs, goals, and hopes for the future. We can help you understand your options and, legally, how you will best be protected at all touchpoints. Get started today by scheduling a discovery call so we can discuss your needs. Visit https://absolutetrustcounsel.com/scheduling/ or call us at (925) 430-7990.
