Quick Answer: Napa County doesn’t have a separate probate division. Probate cases are handled by the Civil Division at the Historic Courthouse, 825 Brown Street, Napa, CA 94559, and the probate phone line, (707) 299-1130, is the same number as the Civil Division’s general line. Filing costs $435 statewide, documents can be eFiled or dropped in the courthouse drop box until 5pm, and estates under $239,700 may qualify for the simplified small estate process instead of full probate.
No Separate Probate Division: What That Means
Unlike some larger California counties, Napa doesn’t operate a standalone probate court or a dedicated probate courtroom. Probate, along with family law, general civil matters, and mental health cases, is handled within the Civil Division. That means the same courthouse, staff, and phone line that handle other civil matters also process probate petitions, verified directly on the court’s own Civil Division page. It’s a smaller operation than counties with dedicated probate departments, which is worth knowing going in so you’re not searching for a “Probate Division” that doesn’t exist as a separate entity.
Location, Phone, and Hours
Probate filings go through the Historic Courthouse at 825 Brown Street, Napa, CA 94559. The probate phone line is (707) 299-1130, the same number as the Civil Division’s general line, confirmed on the court’s official contact page. All court divisions, including Civil, keep hours of 8:00am to 4:00pm Monday through Friday, and a drop box is available at court facilities for same-day filings until 5:00pm. Documents can also be submitted through the court’s eFile system rather than in person.
A Useful Napa-Specific Tool: The Bond Calculator
Napa County’s court website provides a Conservatorship and Guardianship Augmented Bond Calculator, a downloadable spreadsheet tool that helps estimate the bond amount a court-appointed conservator or guardian may need to post. It’s a practical resource the old version of this page never mentioned, and it’s specific to Napa’s own court forms rather than a generic statewide calculator.
Filing Fee and Small Estate Threshold
Opening a probate case costs $435 statewide (Government Code Section 70650), the same fee that applies everywhere in California. If the estate’s total value falls under $239,700 (for deaths on or after April 1, 2026), heirs may be able to use the small estate affidavit process instead of opening a full probate case, which is faster and doesn’t require court supervision of the entire administration.
Napa County Probate Advance
ProbateLend offers a Napa County probate advance that gives qualifying heirs a portion of their expected inheritance now, without waiting for the estate to formally close. There’s no credit check and no monthly payments; repayment comes out of the estate at final distribution.
Frequently Asked Questions
Is there a separate probate courthouse in Napa County?
No. Probate is handled within the Civil Division at the Historic Courthouse, the same building and division that processes family law, general civil, and small claims matters.
Can I file probate documents online in Napa County?
Yes, the court offers an eFile system for electronic submission, in addition to in-person filing and the after-hours drop box.
What is the bond calculator used for?
It’s a tool for estimating the bond amount a court-appointed conservator or guardian needs to post, based on the augmented bond formula under California law. It’s specific to conservatorship and guardianship cases, not standard decedent’s estate probate.
What happens if I call the general court number instead of the probate line?
You’ll likely reach the same place. Napa’s probate phone number and the Civil Division’s general number are the same line, (707) 299-1130.
Does Napa County have a small estate process?
Yes, estates under the current statewide threshold of $239,700 may qualify for a simplified small estate affidavit process instead of full probate, the same threshold that applies across California.
For more on the documents you’ll need to open a case, see our guide to California Letters of Administration. If you’re waiting on an estate to close, learn more about how probate advances work. For more on California probate, visit ProbateLend.