Two months ago a San Mateo County trustee called me four days after the home had already been listed by another agent. The basis hadn’t been documented properly. The court confirmation calendar wasn’t accounted for. One of the three beneficiaries hadn’t been looped in. By the time we untangled it, the heirs were out roughly $180,000 — and I had to call the W&T attorney to walk through what went wrong.
That call shouldn’t happen. And it doesn’t have to, if the attorney and the broker coordinate from day one instead of at disposition.
I’ve worked probate real estate in San Mateo County for 24 years, and I work regularly with about a dozen Peninsula W&T attorneys. The playbook below is what we use to protect heirs, hold up under court scrutiny, and keep trustees out of partition exposure. If you’re an attorney handling a Peninsula estate, bookmark this — it’s the workflow doc I wish every coordination call started with.
Step 1: Lock in the Stepped-Up Basis Before You List
The single biggest mistake I see on Peninsula trust dispositions is listing before the stepped-up basis is properly documented. The IRS allows beneficiaries to take a fair-market valuation as of the decedent’s date of death. On a Hillsborough or Burlingame property that’s appreciated $2M–$4M over the original purchase, that documentation is the difference between a clean disposition and a six-figure capital gains exposure.
I won’t take an estate listing until the trustee has either an appraisal at date of death or a defensible broker’s price opinion tied to that date. It takes a week. It saves the family real money.
Here’s how I help: I produce a date-of-death BPO at no cost to the estate for any W&T attorney I work with. It’s not a substitute for a formal appraisal when one’s required — but it gives the trustee and the attorney an immediate defensible basis number to work from.
Step 2: Sync the Court Confirmation Calendar Before You Market
Court-confirmed sales in San Mateo County run on the Probate Division calendar, and the timing matters more than most attorneys realize. The Superior Court probate calendar will dictate when you can confirm — and a listing that goes live before that’s mapped can end up sitting through a 60-day confirmation window with no offer activity.
I coordinate the listing launch to align with the confirmation hearing window. That way the marketing momentum builds toward the hearing, not against it. For trustee sales that don’t require court confirmation, the question shifts to beneficiary notification — California Probate Code §16061.7 trustee notice timing should be done before marketing, not after.
Step 3: Flag Partition Risk Early — Before the Third Beneficiary Goes Quiet
This is the one that lands attorneys in court. A San Mateo County trust holds a single Peninsula property. Three beneficiaries. Two want to sell. The third disengages, then files a partition action.
The cure is documentation and communication, both started day one. Every beneficiary needs to see the same comp set, the same disposition timeline, and the same marketing plan — at the same time. I deliver a beneficiary briefing packet on every multi-beneficiary trust I list. That packet is what the attorney’s litigation defense will look like if the partition action ever lands.
Here’s how I help: If three or more beneficiaries are on the property, I’ll run an early-warning briefing before the listing goes live. Catches roughly 80% of the partition risk before it becomes a filing.
Step 4: Prep the Property Without Triggering Trustee-Duty Exposure
Trustees in California operate under a fiduciary duty to the beneficiaries — and pre-listing improvements are a place that duty quietly gets breached. Spending $40K on a Hillsborough trust property for cosmetic upgrades may or may not be a defensible trustee decision. The standard isn’t “what would the family want” — it’s “what’s the highest net to the estate, documented and defensible.”
I produce a pre-listing prep memo for every trustee I work with. It lays out the spend, the projected lift, and the net-to-estate math. The attorney signs off, the trustee signs off, the documentation exists if anyone questions it later.
Step 5: Coordinate the Title and Escrow Path Around Estate Tax Filings
If federal or California estate tax filings are in play, escrow timing affects them. The Form 706 nine-month window, the §1014 stepped-up basis substantiation, and the closing-side cash distribution all have to line up with the attorney’s filing calendar. I close roughly four to six estate sales a year where escrow timing was the difference between a clean filing and an amended return.
Frequently Asked Questions
Q: How long does probate take in California?
A standard probate runs 9–18 months on the Peninsula. Court-confirmed real estate sales typically add 30–60 days to the listing-to-close window. Trust dispositions (non-probate) can close in 45–60 days once the trustee notice period clears.
Q: Do you need court approval to sell probate property in California?
It depends on whether the executor has full Independent Administration of Estates Act authority. Full authority means no court confirmation is required. Limited authority means a court confirmation hearing is scheduled — and the listing strategy has to account for it.
Q: What is stepped-up basis in real estate?
Stepped-up basis means inherited real estate gets revalued to fair market value as of the decedent’s date of death — not the original purchase price. On Peninsula properties that have appreciated heavily, this can eliminate hundreds of thousands of dollars in capital gains exposure.
Q: Can a trustee sell real estate without beneficiary approval?
Under most California trust instruments, yes — provided the trustee fulfills their fiduciary duty and provides the required notice under Probate Code §16061.7. Beneficiary buy-in is still strongly recommended to head off partition exposure.
Ready to Coordinate on a Peninsula Trust or Probate Sale?
If you’re a W&T attorney handling a San Mateo County estate with Peninsula real estate, I’d be glad to be the broker partner at the table from day one. Date-of-death BPOs, beneficiary briefing packets, court-aligned listing calendars — all included in the coordination work.
Call me directly at (650) 576-9565 or reach out via marktauber.com to set up a brief coordination call. The Mark Tauber Blog publishes attorney-targeted content monthly — keep an eye out for the partition action deep-dive coming in June.
About the Author:
I’m Mark Tauber, a real estate broker based in Burlingame with 24+ years of SF Peninsula experience. I’m in the top 9% of Coldwell Banker agents internationally and work with W&T attorneys and trustees across San Mateo County on probate sales, trust dispositions, and partition-risk coordination. I write The Mark Tauber Blog to share Peninsula-specific real estate insight — including the attorney-targeted coordination work that doesn’t get published elsewhere.
