The House You Leave Your Kids Could Cost Them More Than You Think
For a lot of California parents, the house is the plan.
Thirty years of mortgage payments. A neighborhood you watched grow up around you. The kitchen your kids grew up in. When it comes time to think about what your kids will inherit, the house feels like the obvious answer: the most tangible, most meaningful asset you can pass on.
But here’s the thing: In California, leaving the house to your kids isn’t as straightforward as it used to be. Depending on what your kids plan to do with it, the gift you’re giving them might come with a tax bill that changes the math entirely.
Prop. 19 Changed the Rules, and Many Parents Don’t Know It
Under the old rules (before February 2021), your kids could inherit your home and keep your low Proposition 13 assessed value. It didn’t matter if they moved in, rented it out, or used it as a vacation property. The favorable tax base transferred with the property.
Proposition 19 closed that door.
Now there is exactly one way for your child to keep your low property tax base: They must move into the home as their primary residence within one year of inheriting it and file for the homeowners’ exemption. The home also has to have been your primary residence. That’s it. That’s the whole exception.
If they’d rather stay in the home they already own. If they live out of state. If they want to rent the property for income. If they just don’t want to move. Any of those scenarios means the property gets reassessed to current market value, and the property tax bill resets accordingly.
Think of your low assessed value like a locked-in rate. It only follows the house if your child moves in.
We’ve seen this play out: parents who built their estate plans years ago, before Prop. 19, and never revisited them. The assumption that “the kids will get the house and keep the low taxes” is baked in. But the law that made that assumption safe is gone.
What Reassessment Costs
Let’s put some numbers on this.
Say you bought your Claremont home in 1988 for $210,000. Under Prop. 13, your property tax bill has grown slowly, and it’s roughly $4,200 a year today.
Meanwhile, the home is now worth $1.8 million.
If your child inherits it and doesn’t move in, that property gets reassessed at $1.8 million. So now the annual tax bill is closer to $21,600. That’s an increase of more than $17,000, just to hold onto a property they may not be able to afford.
And even when a child does move in, there’s a wrinkle. Your child keeps your low tax base only up to a cap: your assessed value plus an inflation-adjusted amount that’s currently a little over $1 million. If the home is worth more than that, the difference gets added to their tax base. For high-value homes like this one, even moving in doesn’t guarantee a full tax freeze.
Here’s the Good News
This is the part that often surprises people, in a good way.
When your child inherits your home, their cost basis (the number used to measure their taxable gain) resets to the fair market value of the home on the date of your death. This is called the stepped-up basis. It means the decades of appreciation that built up during your lifetime don’t get taxed when they inherit.
Here’s what that means in practice. If your home is worth $1.8 million when you pass away, your child’s basis is $1.8 million. If they turn around and sell it for $1.85 million, they owe capital gains tax on only $50,000, not on the $1.6 million of appreciation you built up over 35 years.
The stepped-up basis rule has been preserved as of 2026. It wasn’t changed by recent legislation. And it matters, because it changes the calculus on whether keeping or selling the home makes more sense for your kids.
The Trap: When the Plan Was Never Actually a Plan
We have had this conversation more times than we can count. A parent tells us they’re leaving the house to the kids. We ask: Do the kids know that? Do they want it? Have you talked about what they’d do with it?
Often, the answer is some version of: We figured they’d work it out.
But “working it out” after you’re gone means making complicated financial decisions under emotional pressure, often without the right information and sometimes without the right help. One sibling wants to keep it. One wants to sell. Nobody knew about the Prop. 19 rules. The property tax bill is due. And the thing that was supposed to be a gift has become a source of stress and conflict.
The house isn’t just an asset. It’s an emotional object. And emotional objects make for complicated estate planning when nobody has said the quiet parts out loud.
What to Think Through
Start with an honest question: Are you leaving the house because your kids want it or because you want them to have it? Those can be different things, and the answer can change the plan.
If a child genuinely plans to live in the home, the Prop. 19 exception may preserve the tax benefit and the inheritance can make sense as structured. You’ll want to ensure that the intention is documented, that they understand the one-year move-in requirement, and that your estate plan reflects the plan clearly.
If no child plans to live there, selling during your lifetime is one option, but it’s a trade. You’d give up the stepped-up basis, and any gain above the home sale exclusion ($500,000 for married couples) is taxable. The upside: The kids get cash without the carrying costs, and you get to see the impact of that gift. Which route comes out ahead depends on whether your kids would keep the house or sell it right away, and that’s the math to run.
There is no universal right answer here. But there is a right process, and it involves running the numbers, talking to your kids about their intentions, and making sure your estate plan reflects the world as it is now, not the one that existed before Prop. 19.
Have the Conversation Now, Not Later
If your estate plan still has the house going to the kids without any deeper thought about what that can mean for them, this is a good one to revisit. Not because anything is urgent, but because a plan built on current information (the real property tax math, the stepped-up basis rules, what your kids actually want) is a better plan than one built on assumptions.
We work with families throughout Claremont and across Southern California on exactly these conversations. We help integrate real estate into a broader, organized financial plan so that a decision this significant is made with the full picture in view, not just the emotional one.
And if your kids are starting to think about what this means for their own financial picture, we are happy to have that conversation with them. Getting the whole family on the same page before decisions have to be made under pressure is one of the most useful things good planning can do.
Schedule a time at evermont.com or call us at (909) 296-7977. We’ll take it one step at a time.
Keep building your future, and theirs.
This material was written in collaboration with artificial intelligence (Claude) derived from sources believed to be accurate. This information should not be construed as investment, tax, or legal advice.