Quick Answer: Filing a San Mateo County decedent’s estate probate case requires two initial forms, the DE-111 Petition for Probate and DE-121 Notice of Petition to Administer Estate, plus publishing notice within 30 days of filing under the court’s local Form PR-13. Before Letters are actually issued, several more forms are required, including a request for a court-appointed probate referee. Tentative rulings on probate matters post by 3pm the court day before the hearing, and the Probate Court Investigator’s Office (a separate contact from the general clerk) handles guardianship and conservatorship investigations specifically.
What You Actually Need to File the Initial Petition
San Mateo County’s Probate Division lists the exact forms required for an initial decedent’s estate filing, confirmed directly on the court’s own Petition Documents page: the DE-111 Petition for Probate and the DE-121 Notice of Petition to Administer Estate. If a will exists, the original must be lodged with the court before the hearing date, not just referenced or copied. The Order for Probate and copies need to be submitted at least 7 days before the hearing date, and if you want a stamped copy mailed back, you need to include a self-addressed, stamped envelope, an easy detail to miss.
The court also requires publication of notice within 30 days of the filing date, following the specifics on the court’s local Form PR-13 for newspaper listings, a statewide requirement but one with San Mateo’s own local form governing exactly how it’s documented.
More Paperwork Before Letters Are Actually Issued
Getting your petition granted at the hearing isn’t the end of the paperwork. Before the court will issue Letters Testamentary or Letters of Administration, San Mateo requires several additional forms: the DE-147 Duties and Liabilities of Personal Representative, the DE-147S confidential statement of birth date and driver’s license number, a local Form PR-5 request for appointment of a California probate referee, a bond if the court’s order specifies one, the DE-140 Order for Probate, and the DE-150 Letters themselves. Skipping any of these delays the point where you can actually act on the estate’s behalf.
Tentative Rulings Post the Day Before, Not the Day Of
If you have a probate hearing on the calendar, don’t wait until the morning of to check where things stand. San Mateo’s Probate Department posts tentative rulings by 3:00pm the court day before the scheduled hearing, under Local Rule 4.1(B), organized into separate pages by day of the week rather than one combined list. Rulings stay posted for 5 calendar days. Checking the tentative ruling in advance tells you whether you need to actually appear and argue, or whether the tentative is likely to become the final order.
A Separate Contact for Guardianship and Conservatorship Investigations
If your matter involves a guardianship or conservatorship rather than a straightforward decedent’s estate, San Mateo routes investigation-related questions through the Probate Court Investigator’s Office specifically, a different contact than the general Probate Clerk’s Office. Worth knowing before you spend time calling the wrong number. Note also that the Clerk’s Office phone hours are narrower than the courthouse’s general hours, Monday through Friday 8:30am to 1:00pm only, and in-person office visits require an appointment, walking in without one won’t guarantee you’re seen.
Need Cash Before the Estate Closes?
Filing the paperwork correctly is only the start, California probate typically runs 9 to 18 months from petition to final distribution. If you’re an heir expecting an inheritance from a San Mateo County estate and need funds sooner, ProbateLend’s San Mateo County probate advance provides a portion of your expected share now, no credit check, no monthly payments, repayment comes out of the estate at final distribution. See how probate advances work more broadly, and our San Mateo County probate guide for location, hours, and the 2022 rule changes on temporary guardianships and conservatorships.
Frequently Asked Questions
What forms does San Mateo County require to open a decedent’s estate probate case?
The DE-111 Petition for Probate and DE-121 Notice of Petition to Administer Estate, plus the original will if one exists, lodged with the court before the hearing.
How do I check a San Mateo probate tentative ruling before my hearing?
The court posts tentative rulings by 3:00pm the court day before the hearing, organized by day of the week on the Probate Department Tentative Rulings page, retained online for 5 calendar days.
Who do I contact about a guardianship or conservatorship investigation in San Mateo County?
The Probate Court Investigator’s Office handles these specifically, a separate contact from the general Probate Clerk’s Office that handles filing questions.
Can I walk into the San Mateo Probate Clerk’s Office without an appointment?
No, in-person office hours are by appointment only, and phone hours are limited to Monday through Friday, 8:30am to 1:00pm.
What happens after the court grants my petition for probate?
Letters aren’t issued automatically. You still need to submit the DE-147 duties and liabilities statement, a request for a probate referee, any required bond, and the DE-140 Order for Probate before the DE-150 Letters are actually issued.
San Mateo County’s probate paperwork has more steps after the initial hearing than most people expect. For more on managing an inheritance in California, visit ProbateLend.