Since Prop 19 took effect, I’ve had a steady stream of parents ask some version of this: “Should we just put the house in our son’s name now, so he gets to keep our property tax?” The instinct is understandable, and in a narrow set of situations a lifetime transfer can make sense. For most Silicon Valley families, though, deeding the house to a child during life trades a property tax benefit for a much bigger income tax problem. This article shows why with a real example. It’s part of my guide to Prop 19 for Silicon Valley families, and it’s not a substitute for advice from your estate attorney and CPA.
Key Takeaways
Summary: Gifting the house to a child during life can keep Prop 19’s property tax break, but it usually gives up the stepped-up basis the child would get at death. On a long-held Silicon Valley home, that lost step-up often costs far more than the property tax savings.
From my practice: A young couple I helped buy a bank-owned home for $415,000 sold it with me sixteen years later for $875,000. That’s a $460,000 gain, and it’s the kind of number that follows a child who receives a house as a gift, because a gift carries over the parents’ original basis instead of getting a step-up at death. Before anyone deeds a house to a child, I want the CPA to see the purchase price next to today’s value.
The Example
A widowed mother bought her Sunnyvale home in 1976 for $65,000. Her assessed value is about $220,000, and the home is worth $2,000,000. She is moving to assisted living, and her son, who plans to live in the house, will receive it either as a gift now or through her trust when she dies. Assume the son later sells for $2,300,000 after living there several years, with $120,000 of selling costs, and that his mother dies three years after moving.
| Gift now | Inherit at death | |
|---|---|---|
| Prop 19 assessed value if son moves in | $220,000 plus the $735,414 above the limit, or about $955,414 | Similar calculation at the date of death |
| Son’s tax basis | $65,000 plus improvements (carryover) | About $2,000,000 (stepped up at death) |
| Gain on a later $2,300,000 sale after $120,000 of costs | About $2,115,000 | About $180,000 |
| Home sale exclusion if son lived there 2 of 5 years | ($250,000) | ($250,000), which covers the gain |
| Taxable gain | About $1,865,000 | None |
At combined federal and California rates, a $1,865,000 gain could produce a tax bill in the hundreds of thousands of dollars. The property tax difference between gifting and inheriting, by contrast, is often small, because the son would get essentially the same Prop 19 treatment when he inherits, as long as he moves in within a year of the death. The numbers here are simplified and your situation will differ, but this is the pattern I see over and over.
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Federal law resets the basis of inherited property to its value at death. In most of the country that’s a nice benefit. In Silicon Valley, where homes bought in the 1970s and 1980s have gained 20 or 30 times in value, it’s often the largest single tax benefit a family will ever receive. A gift during life keeps the parent’s original basis, so the entire gain from 1976 forward follows the child. I cover the inheritance side in capital gains on an inherited house.
Other Risks of Gifting
- Medi-Cal. Transferring a home can affect eligibility for long-term care benefits, and California reinstated a Medi-Cal asset limit in 2026. See an elder law attorney first.
- Loss of control. Once the house is the child’s, the parent can’t change their mind.
- The child’s problems become the house’s problems. A lawsuit, bankruptcy, or divorce involving the child can reach the house.
- Fairness among siblings. Giving one child the house now can create conflict later if the rest of the estate doesn’t balance it.
- Gift tax paperwork. A gift of this size generally requires a federal gift tax return, although with the lifetime exemption at $15 million per person in 2026, tax is rarely owed.
A real example: Adding a child to title is the most common version of gifting I see. On one inherited home, title was held in joint tenancy, so when the mother passed, her share went to her daughter automatically and there was no probate. That part worked well, and the house sold at full price in cash. The tax side of that kind of arrangement is different from inheriting through a trust or a will, so I want a CPA to look at it before a family puts a child on the deed.
What Usually Works Better
For most families, a properly funded living trust, or in some cases a revocable transfer on death deed, gets the child both benefits at death: the stepped-up basis, and the Prop 19 exclusion if the child moves in within a year. If the parent is moving to assisted living and the child wants to move in now, some families have the child rent or live in the house while the parent still owns it, preserving the step-up for later. Each option has tradeoffs, which is why this is a decision for the estate attorney and CPA working together. My estate planning primer for Bay Area homeowners covers the tools.
When a Lifetime Transfer Might Make Sense
There are situations where it can be reasonable, such as a home with little built-in gain because it was bought recently, a family with a clear plan and professional advice around Medi-Cal, or a child who will live in the house for decades and never sell. Even then, it deserves a careful look at the numbers. For the rest of the Prop 19 rules, go back to my guide to Prop 19 for Silicon Valley families.
Sources and Further Reading
- California State Board of Equalization: Proposition 19
- IRS Publication 551, Basis of Assets
- California State Board of Equalization: Change in Ownership FAQ
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Frequently Asked Questions
Should I give my house to my child to avoid Prop 19 reassessment?
Usually not. A gift during life gives up the stepped-up basis your child would receive at death, which on a long-owned Silicon Valley home can cost far more in capital gains tax than the property tax savings.
Does Prop 19 apply to gifts during life?
Yes. The parent-child exclusion can apply to a gift or sale during life if the home was the parent’s primary residence and the child makes it their primary residence within one year.
What is carryover basis?
When you receive a gift, you generally take the giver’s original tax basis. When you inherit, the basis is generally stepped up to the value at the date of death.
Does gifting a house affect Medi-Cal?
It can. California reinstated a Medi-Cal asset limit for older adults in 2026, and transfers can affect eligibility for long-term care. Consult an elder law attorney first.
What is better than gifting the house for Prop 19?
For most families, a living trust or transfer on death deed lets the child receive both the stepped-up basis and the Prop 19 exclusion at death, if the child moves in within a year.
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