A trustee called me last spring, eager to “settle the estate quickly” by listing an inherited Hillsborough home the week after the funeral. Reasonable instinct — but if we had moved the way she wanted, the heirs could have handed the IRS roughly $180,000 that was never supposed to leave the family. That number isn’t dramatic license. It’s the difference a single missed step makes when you’re selling inherited property in San Mateo County. After 24 years coordinating these sales, I’ve learned the tax outcome is usually decided before the home ever hits the market.
This guide is written plainly enough to forward to a client, but precise enough that a Wills & Trusts attorney can hand it over without wincing. I’m not your tax advisor or your attorney — I’m the real-estate piece that protects the position they set up. Here’s the sequence that keeps the money where it belongs.
Step One: Get a Date-of-Death Valuation Before You Do Anything Else
When someone inherits a home, the property’s tax basis generally resets to its fair market value on the date of death — that’s the stepped-up basis under IRC §1014. On the Peninsula, where a home bought decades ago may have appreciated by millions, that step-up is the single most valuable thing protecting the heirs.
But you have to document it. A formal date-of-death appraisal fixes the basis in writing so the IRS can’t later argue it was lower. Skip it, sell “fast,” and you can end up taxed on phantom gain — appreciation that the step-up should have erased. On a home that gained, say, $900,000 of lifetime value, a roughly 20% effective rate on that overlooked gain is exactly how a family loses $180,000.
Here’s how I help: The first thing I do on a trust sale is line up a credible date-of-death valuation — often a retrospective appraisal — and coordinate it with the attorney before we discuss listing. It’s a small cost that protects a very large number.
Step Two: Confirm the Trust-vs-Probate Path Before You List
Whether the property sells through the trust or through probate changes your timeline, your disclosures, and who has authority to sign. A home held in a properly funded living trust can usually be sold by the successor trustee without court supervision. A home that fell out of the trust — or was never retitled — may require a probate process that adds months.
I’ve watched well-meaning families list a San Mateo County home only to discover mid-escrow that no one had authority to sign. That’s avoidable. Confirm the path first, and the sale runs clean.
Here’s how I help: Before launch, I sit down with the trustee and the W&T attorney to confirm authority, title, and the disclosure obligations specific to an estate sale — so we never stall a deal because the paperwork wasn’t squared away.
Step Three: Coordinate the Sale to Protect the Tax Position
Because inherited property automatically qualifies for long-term capital gains treatment, the heirs aren’t punished for selling soon after death — the step-up does the heavy lifting. If an heir actually lives in the home for 2 of the 5 years before selling, the $250,000/$500,000 primary-residence exclusion can stack on top of the stepped-up basis and wipe out even more. And for 2026, with the federal estate tax exemption projected near $15 million per individual, most Peninsula estates owe no estate tax at all — the step-up still applies.
The job, then, is execution: price to the documented basis story, prep without overspending the estate’s cash, and time the sale so the numbers hold up. That’s where a coordinated real estate and estate strategy earns its keep.
Frequently Asked Questions
Q: Do you pay capital gains tax on an inherited home in California?
Often very little, thanks to the stepped-up basis. You’re generally taxed only on appreciation after the date of death — not on the decades of gain during the prior owner’s life — provided you’ve documented the date-of-death value.
Q: What is a date-of-death valuation and why does it matter?
It’s a documented fair-market value of the property as of the day the owner died. It sets the stepped-up basis. Without it, the IRS can challenge your basis and tax gain that should have been erased.
Q: Should I sell an inherited house through the trust or after probate?
It depends on how title was held. A properly funded trust usually allows the successor trustee to sell without court supervision; assets outside the trust may need probate. Confirm the path with the attorney before listing.
Q: How do I avoid overpaying tax when selling an inherited Peninsula home?
Get the date-of-death appraisal, confirm the trust-vs-probate path, and coordinate the sale with your attorney and agent before listing. The sequence is what protects the heirs.
Selling an Inherited Peninsula Home? Let’s Protect the Heirs.
If you’re a trustee — or a W&T attorney with a client facing a San Mateo County property sale — the worst outcome is a rushed listing that undoes careful estate planning. I coordinate the real-estate side so the tax position you built actually survives the sale. Call me at (650) 576-9565 for a no-pressure trustee consultation, or pass this along to a client who needs it. The Mark Tauber Blog covers the estate-and-real-estate intersection regularly.
Sources and further reading
- IRS Publication 551, Basis of Assets — the authoritative federal guidance on stepped-up basis for inherited property.
- California State Board of Equalization: Proposition 19 — how and when an inherited California property is reassessed for property tax.
- San Mateo County Assessor — local assessment records, reassessment rules and exclusion forms.
About the Author:
I’m Mark Tauber, a real estate broker based in Burlingame with 24+ years of Peninsula experience. I’m in the top 9% of Coldwell Banker agents internationally and regularly coordinate trust and estate property sales across San Mateo County alongside Wills & Trusts attorneys. I write The Mark Tauber Blog to help trustees and their advisors get these sales right the first time.
