Napa is the county seat and the largest city in Napa County, at the south end of the valley. Valpro Attorney Services takes process serving and court filing requests for Napa addresses and the Napa County Superior Court. We work from one office, in Sacramento. There is no Valpro Attorney Services office or team based in Napa.
Send papers through a Service Request with up to 5 PDFs, or email them to Service@ValproAttorneyServices.com. The phone line is 855-582-5776, staffed Monday through Friday, 8:30 a.m.–5 p.m.
Where are Napa civil, family and small claims cases filed?
At the Historic Courthouse, 825 Brown Street in downtown Napa. The court's Civil Division works from that building and handles general civil cases (limited and unlimited), small claims, unlawful detainers, family law and probate. Its office hours are 8 a.m. to 4 p.m., Monday through Friday. Criminal cases use a separate building on Third Street.
| Building | Address | What the court lists there |
|---|---|---|
| Historic Courthouse | 825 Brown Street, Napa 94559 | Civil Division: civil, small claims (first floor), unlawful detainer, family law, probate |
| Criminal Courthouse | 1111 Third Street, Napa 94559 | Criminal matters |
The Family Law Division sits inside the Civil Division, so one clerk's office takes family, probate and civil paperwork. The court says its divisions stay open through the noon hour. A drop box for same-day filings and payments is available at court facilities every day until 5 p.m. Sources: the court's contact, Civil Division and Family Law Filing pages, checked October 2026.
The Historic Courthouse is less than a mile from the city's Census center point. Filing and service for a Napa case can go on the same Service Request.
Does Napa County Superior Court require e-filing?
Napa's own pages describe e-filing as accepted, not required. Local Rule 2.10 states that the court accepts electronic filings in civil, family, probate, criminal, traffic, juvenile delinquency and juvenile dependency cases. Filers pick an electronic filing service provider from the court's list. We found no mandatory e-filing rule on the court's site in October 2026.
Napa adds 2 local rules that catch out-of-county filers:
- Courtesy copies (Local Rule 3.3). Any e-filed document over 15 pages, exhibits included, and any color document needs a courtesy copy. It goes to Court Counsel or the Clerk by the next court day.
- Redaction. The court says filers alone are responsible for redacting Social Security and driver's license numbers before e-filing. The court can't redact for you.
For paper filings, Local Rule 3.4 says the clerk endorses at most 2 copies of a document at filing. Extra copies are photocopied for a fee. The court also does not accept direct fax filings. Our Napa County court filing page and the court filings overview explain how we file for you.
The Civil Division page also links forms to opt in to, or out of, electronic service under CCP § 1010.6. That covers service between parties after a case is underway. A summons that starts the case still has to be served by one of the methods in the Code of Civil Procedure.
Proof of service in Napa: the deadline that drops hearings
Napa Local Rule 3.2 is short. If no proof of service is filed before the time set for the hearing, the matter may be taken off calendar. A served motion without a filed proof can lose its date.
Small claims has its own timing. The court's small claims page says the claim and order must be served at least 15 days before the hearing if the defendant lives in Napa County. The window is 20 days if the defendant lives outside the county. Napa small claims hearings are typically heard on Thursdays at 1:30 p.m. in Courtroom 2, according to the same page.
Work back from those dates. Personal service is complete when the papers are handed over (CCP § 415.10), but finding the person can take several attempts. We make no guarantees for service. Send the papers early and tell us the hearing date in the Letter of Instruction.
Papers to serve in Napa?
Who may serve papers in Napa?
Any adult, at least 18 years old, who is not a party to the case may serve a summons in California (CCP § 414.10). In small claims, that means the plaintiff can't serve the defendant personally. The court's page lists certified mail by the clerk, the Napa County Sheriff, a private process server or another adult who isn't a party.
A process server signs the proof of service and returns it to you for filing. Certified mail service by the clerk depends on the defendant signing for it, which the court notes the defendant is not required to do.
Napa addresses: the city and the valley
The city of Napa had 79,246 residents in the 2020 Census and an estimated 76,562 on July 1, 2025 (Census Vintage 2025). It covers 2 Census ZIP Code areas, 94558 and 94559. ZIP Code areas are drawn by the Census from postal patterns, so they don't stop at the city limit. Add the community name to any address outside town.
Inside the city, most addresses are homes, apartments and downtown businesses. Outside it, much of Napa County is vineyard land, with wineries, rural parcels and hillside homes. Those properties often have:
- a locked gate or a call box at the road
- a long private drive with the house out of sight
- a business address that differs from the owner's home
- seasonal hours, with staff on site only part of the year
Remote areas are subject to different timelines, and the upper valley and the hills fall into that group. Give us the gate code or a contact who can let the server in, plus a second address such as a home in town.
Serving a winery or other Napa business
Many Napa businesses are corporations or LLCs, and the person behind a tasting room counter may have no authority to accept legal papers. Find the entity first on the Secretary of State's bizfile Online search, then send us the name of its agent for service of process.
Corporations designate an agent in the statement of information required by Corporations Code § 1502(b). LLCs keep one on file under § 17701.13. A corporation can also be served through an officer or general manager, among others listed in CCP § 416.10. Our guide to serving corporations explains each option and what happens when the agent can't be found.
How to send a Napa Service Request
Here is what to include so the first attempt isn't spent on research:
- Upload the papers. Up to 5 PDFs, assembled the way they should be served.
- Name the party. A person's full name, or the exact entity name from bizfile.
- List every address. Home, work, a second property, with unit numbers.
- Write the Letter of Instruction. Gates, dogs, the hours the person is home and any court date that sets the deadline.
- Pick Rush or Standard. Both are described on this page.
Each request gets a confirmation email, and every update comes in that thread.
What if the person has moved?
If the server finds the Napa address empty or the person gone, ask about investigations and skip tracing. We look for a current address, report it to you and, once you approve, send the papers back out. Our post on skip tracing for legal cases explains what the search can and can't find.
For copies of filed documents from the Historic Courthouse, see our document retrieval service.
Nearby cities and the county line
Yountville is 7.5 miles north of Napa, and American Canyon is 8.5 miles south. Both are in Napa County and use the same Brown Street courthouse.
Sonoma is only 8.6 miles west, but it's in Sonoma County, so its cases go to the courthouses in Santa Rosa. South of American Canyon, Vallejo is in Solano County, and its civil cases file in Fairfield. Every other Napa County community is listed on our Napa County process serving page.