Newhall is a place name, not a city. It's one of the communities that make up the City of Santa Clarita, and the Census Bureau doesn't count it separately. Yet "Newhall, CA" is what many envelopes, leases and court papers say, and the ZIP Code most tied to it reaches well beyond the city limits. For a paralegal, that raises two practical questions: which courthouse takes the case, and whether the address is in the city or in unincorporated Los Angeles County. Both answers follow, for Newhall addresses specifically.
We serve summonses, subpoenas and every other legal document at Newhall homes and businesses, and we file Newhall cases at Chatsworth or downtown. Send a Service Request or email the papers to Service@ValproAttorneyServices.com.
Newhall's filing courthouses
The court's Filing Court Locator recognizes Newhall as a community and lists it under four ZIP Codes: 91321, 91322, 91381 and 91382. We entered all four on October 29, 2026, and each Newhall row returned the same buildings. Distances are straight-line from the Newhall point in the U.S. Geological Survey's place-name database.
| Case type | Courthouse | Distance |
|---|---|---|
| Unlimited civil (over $35,000) | Chatsworth Courthouse, 9425 Penfield Ave. | 10.2 mi |
| Family law and restraining orders | Chatsworth Courthouse | 10.2 mi |
| Unlawful detainer (limited) | Chatsworth Courthouse | 10.2 mi |
| Small claims | Chatsworth Courthouse | 10.2 mi |
| Limited civil, collection | Chatsworth Courthouse | 10.2 mi |
| Limited civil, other | Stanley Mosk Courthouse, 111 North Hill St., Los Angeles | 28.0 mi |
| Probate | Stanley Mosk Courthouse | 28.0 mi |
The same ZIP Codes carry other community names in the locator. Under 91321 it also lists Canyon Country and Santa Clarita, and under 91381 it lists Stevenson Ranch and Pico. Every one of those rows matched the Newhall answer.
The Census file adds a caution about the other three codes. 91322 and 91382 don't appear in it as ZIP Code areas at all. 91381 does, but only about 16% of its land is in Stevenson Ranch and a fraction of a percent in Santa Clarita, with the rest outside any city or Census place. A "Newhall" address carrying 91381 may therefore be well outside the old Newhall area, so give us the full street address and any directions you have.
Newhall addresses inside and outside the city
The Census Bureau's 2020 file matching ZIP Code areas to places shows how ZIP Code 91321 divides by land area:
- About 51% lies inside the City of Santa Clarita.
- About 49% lies outside any city, in unincorporated Los Angeles County.
- A sliver, about 0.1%, falls inside the City of Los Angeles.
So two homes with the same "Newhall, CA 91321" mailing address can sit under different local governments. That matters when a case turns on a city ordinance, a city permit or a city-issued notice. It can also matter when you need to name the right public agency as a party. It doesn't change the courthouse for the Newhall rows above, and it doesn't change service, since the server goes to the street address.
When you send a Newhall request, tell us whether you know which side of the line the property is on. If you don't, the county assessor's records or a property tax bill will show it.
Probate and the North District exception
Probate is where Newhall's location trips people up. Local Rule 2.3 requires conservatorship, guardianship, probate and trust proceedings to be filed in the Central District, with one exception. Some of those matters may be filed in the North District instead:
- Conservatorships and guardianships, when the petitioner or the proposed conservatee or ward lives in the North District.
- Decedents' estates, when the decedent lived there or the petitioner does.
- Trusts, when the trustee administers the trust there.
The North District has one courthouse, the Michael D. Antonovich Antelope Valley Courthouse in Lancaster, according to Local Rule 2.2. Newhall isn't in it. The same rule lists the Santa Clarita Courthouse in the North Valley District, together with San Fernando and Chatsworth. The locator confirms the result: probate for every Newhall row goes to Stanley Mosk downtown. Read the rule closely, though. For a decedent's estate, the North District option turns on where the decedent lived or where the petitioner lives, so an heir petitioning from inside the North District may have a choice even when the decedent lived in Newhall.
Probate notices are then served on heirs and interested persons wherever they live. List every name and address on one request, and we'll plan the attempts together.
The Santa Clarita Courthouse on Valencia Boulevard
The nearest courthouse to Newhall is the Santa Clarita Courthouse, 23747 West Valencia Blvd., about 2.4 miles away. Its directory lists only criminal and traffic divisions. A civil complaint, an eviction or a family law petition from Newhall won't be filed there.
That building can still come up. A witness subpoena in a criminal case, or a notice in a traffic matter, may name it. If you're sending us a subpoena for a Newhall witness, include the courthouse and department printed on it, and the date the witness must appear.
Papers to serve in Newhall?
Filing at Chatsworth
Most Newhall filers use Room 1200 on Chatsworth's 1st floor. The directory lists a long set of tasks handled at that counter for unlimited cases other than personal injury: certifications and copies, defaults, filing documents, judgments, name change petitions, post-judgment matters, reclassifications and transfers. Family law, civil collections, small claims, limited evictions and restraining orders share the same room.
The building opens at 8:00 a.m., and the clerks take filings from 8:30 a.m. to 4:30 p.m. on court days. Motion dates for unlimited non-injury cases are reserved through the court's online Court Reservation System. A children's waiting room for ages 2½ to 13 is in Room 1250, which helps a self-represented parent who has to bring a child to a hearing.
For attorneys, the court's civil e-filing FAQ says represented parties must e-file civil documents unless they have an exemption order, requested on forms EFS-007 and EFS-008. People representing themselves may still file on paper.
Family law and restraining orders
Divorce, custody, support and restraining order cases from Newhall are all filed at Chatsworth. The directory lists the Family Law Clerk's Office, the domestic violence counter and the civil harassment restraining order counter in Room 1200, and it lists a Family Law Facilitator Office for the building.
A family law summons served on a Newhall spouse is usually proved on Judicial Council form FL-115. A domestic violence restraining order must be handed to the restrained person, and the server signs form DV-200. Put the hearing date first in the Letter of Instruction, then a photo, the person's vehicle and the places they spend a weekday. If there's already a protective order in place, say so, so the approach can be planned.
Evictions for Newhall rentals
A Newhall landlord files the eviction at Chatsworth, and the tenant's summons names that courthouse. The Judicial Council's eviction guide sets the response window. A tenant who is handed the papers has 10 court days to file an answer, not counting weekends or court holidays. After substituted service or posting, followed by mailing, the tenant has 10 calendar days plus 10 court days from the mailing.
For a Newhall rental, send:
- Each adult occupant's name, spelled as on the summons.
- The unit or space number, and the building letter in a larger complex.
- Gate, call-box or garage details, if the property is secured.
- The notice history, including what was served, when and by whom.
Small claims for Newhall disputes
Newhall small claims are filed and heard at Chatsworth. The Judicial Council's self-help guide sets the service deadline by counting back from the trial date on page 1 of the claim: at least 15 days before trial, or 20 days if the defendant is in a different county from the court. Substituted service must be finished 10 days before that. If the deadline falls on a weekend or court holiday, count back to the last court day.
The plaintiff can't serve the claim. A friend, relative or process server who is 18 or older and not part of the case can, and that person signs form SC-104. If one defendant can't be found in time, form SC-150 asks to move the trial and must be filed at least 10 days before the court date.
Injury cases from a Newhall incident
Local Rule 2.3 makes personal injury a mandatory-filing category. An unlimited suit for bodily injury, wrongful death or damage to personal property must be filed in the judicial district where the incident arose, and the court's locator is the tool the rule names for finding it. For Newhall, that's the North Valley District, and the locator returns Chatsworth.
Every new civil filing carries form LACIV 109, the Civil Case Cover Sheet Addendum and Statement of Location. The rule requires a copy to be served with the summons and complaint. If a case lands in the wrong district, transfer questions for personal injury cases go to a designated Personal Injury Court in the Central or North District.
Serving a business with a Newhall address
For a corporation, LLC or limited partnership, the Secretary of State's business search shows the agent for service of process, who accepts legal papers on the company's behalf. The Judicial Council's guide for finding a business also notes that an officer of a corporation can be served if no agent can be found. For a shop run by a sole owner under a trade name, the guide points to fictitious business name records at the county clerk-recorder. Our serving corporations guide covers registered agent companies and out-of-state entities.
What to send with a Newhall request
The more the server knows, the better the first visit goes. Include:
- The full address, including whether it's inside Santa Clarita or in unincorporated county land, if you know.
- A unit, space or suite number, and any gate code.
- When the person is usually there, or the hours they work.
- A workplace or second address in the valley.
- A photo or description, and a vehicle and plate.
- The hearing date, so the attempts finish ahead of it.
If the address no longer works, skip tracing searches for a current one, and you approve it before the next attempt. Status updates come by email. We make no guarantees for service.
Filing and serving together
We file Newhall cases at Chatsworth or Stanley Mosk, then send the papers out for service once the summons issues. Our Los Angeles County court filing page covers the process, and document retrieval pulls conformed copies and records. The proof of service guide explains the form you get back.
Places near Newhall
Santa Clarita is 2.9 miles from the Newhall point, Stevenson Ranch 3.1 and Canyon Country 4.3. Valencia is 6.1 miles away and Castaic 8.4. The rest of the county starts from our Los Angeles County page.