California service-of-process rules — county-by-county cheatsheet

California has 58 county Superior Courts, and most service-of-process rejection happens at the default clerk's window — not in the published rules. The written rules are only ~10% of what actually gates whether your Request to Enter Default is accepted. Here's the working knowledge most paralegals never get.

The two counties with WRITTEN hour rules

Alameda — Local Rule 3.50 (the strictest in California)

For substituted service under CCP §415.20(b) in Alameda County:

• At least 3 attempts of service in good faith
• On at least 2 different days of the week
• Where attempts are at a dwelling, one attempt must be before 8:00 AM AND another after 7:00 PM

A Proof of Service that satisfies most California counties can get rejected outright by the Alameda clerk if it doesn't meet 3.50. The clerk denies the Request to Enter Default and the case stalls.

San Diego — Local Rule 2.1.5

For sub-service in San Diego County:

• 3 attempts on 3 different days
• 3 different times of day — not all in AM, not all in PM
• At least one attempt before 8:00 AM or after 5:30 PM, AND at least one between 8:00 AM–5:30 PM OR on Saturday/Sunday at any time
• For business addresses, all 3 attempts may be made during normal business hours

The unwritten rules other counties enforce

San Francisco — the "work shift" rule

San Francisco has no published rule but the default clerk applies an unwritten checklist that traces back to a 1989 memo from then-Presiding Judge Lillian Sing. The standard requires attempts at morning, afternoon, and evening "work shifts" spanning at least 3 hours apart on different days. SF also requires a substantive declaration explaining HOW the server verified the address was the defendant's — not just a check-the-box POS.

Sacramento — published working standard

The Sacramento Public Law Library publishes the clerk's working standard: at least 3 attempts on different days at different times, during hours the party is likely available. Business-address attempts must be during business hours.

Yolo + Solano — apply SF pattern

Both counties follow the SF work-shift pattern by clerk practice even without a written rule.

Marin — strict on declarations

Wants specific timestamps + physical descriptions of the sub-served recipient (not "co-resident").

Fresno — 5th DCA opinion

The 5th District Court of Appeal has invalidated sub-service where attempts were within 4 hours of each other on the same day. Spread attempts across days, not hours.

Contra Costa — informal Alameda pattern

East Bay clerks have been observed applying Alameda 3.50 informally. Treat Contra Costa as if Alameda 3.50 applies.

The safe-harbor pattern that survives in 58 / 58 counties

Layer Alameda's hours + San Francisco's work-shift spread and you get a pattern that satisfies every county in California:

| # | Day | Time window | Address | |---|------------|----------------------------------------|----------| | 1 | Day A | Before 8:00 AM | Dwelling | | 2 | Day B | After 7:00 PM | Dwelling | | 3 | Day C / weekend | Midday or other, 3+ hour gap from #1/2 | Dwelling |

Then mail a first-class copy same/next day; attach POS-040 mailing declaration. Without the mailing the sub-service is voided — *Evartt v. Superior Court* (1979). Counties that allow less will accept more.

For business addresses, 3 attempts during normal business hours on different days is the safe pattern across CA.

What the declaration of diligence must say

Per *Stamps v. Superior Court* (1971) and the SF DD checklist:

• Date, day-of-week, exact time, one-line result for every attempt
• Substantive statement of how the address was verified (DMV record / utility bill on door / voter registration / neighbor confirmation / skip-trace hit) — required by SF, recommended everywhere
• Specific names + descriptions of any sub-served recipients (not just "co-resident")

Generic phrases like "attempted multiple times" or "diligent inquiry made" get rejected.

Unlawful detainer landmines

• Alameda UD posting under CCP §415.45 requires 5 attempts (not 3) before the court issues a posting order
• Orange County uses local Form L-690 for UD posting applications — the generic Judicial Council form gets rejected
• CCP §415.46 — Prejudgment Claim of Right to Possession can ONLY be served by a marshal, sheriff, or registered process server. A PI license alone does not qualify.
• AB 747 (Stats. 2025, Ch. 563) — operative January 1, 2027 — codifies a dwelling-attempt requirement: for residential UD posting orders, at least one attempt must be at the tenant's dwelling (not just the rental property if already vacated). Commercial UD and DV "program participants" under Gov Code §6205.5(a)(9) are exempt. After 2027, personal/sub-service supersedes a posting order if the defendant is later located.

Mandatory eFiling counties

Alameda, Riverside, and San Bernardino Superior Courts mandate eFiling for civil cases (effective Jan 1, 2022). Paper POS submissions are rejected without docketing. Route through One Legal, Green Filing, File & ServeXpress, or an equivalent approved vendor.

The Evidence Code §647 advantage

When a California-registered process server files a Proof of Service, the POS carries a rebuttable presumption of valid service under Evidence Code §647. The party challenging service has to prove invalidity — they cannot defeat the POS with a bare denial. *Palm Properties v. Yadegar* (2011) held this presumption is not discretionary; the court MUST apply it.

Lay servers (friends, relatives, paralegals without registration) do not get the presumption.

Cases every paralegal handling CA service should know

• *Pasadena Medi-Center v. Superior Court* (1973) — apparent-authority doctrine for corporate service
• *Stamps v. Superior Court* (1971) — what "reasonable diligence" actually means
• *Evartt v. Superior Court* (1979) — the post-sub-service mailing is jurisdictional
• *Bein v. Brechtel-Jochim* (1992) — gated-community service via the gate guard
• *Trujillo v. Trujillo* (1945) — drop-service doctrine (defendant can't avoid by walking away)
• *American Express Centurion Bank v. Zara* (2011) — §647 presumption operation
• *Palm Properties v. Yadegar* (2011) — courts must apply the §647 presumption
• *Slaughter v. Legal Process & Courier Service* (1984) — false POS = personal NIED liability
• *Carr v. Kamins* (2007) — publication invalid against open-and-actual occupant

The Servd safe-harbor workflow

Servd builds the Alameda + SF pattern into every California sub-service job by default:

• Every attempt logged with GPS + timestamp + photo (proof against *Slaughter*-style claims)
• Every server is California-registered under B&P §22350 (so every POS gets the §647 presumption)
• Post-sub-service mailing is a separate workflow step that can't be skipped — POS submission is blocked until mailing is logged
• Local-form awareness — Orange L-690, San Bernardino SB-12950 used automatically for posting applications
• AI dispatcher checks the destination county against the Alameda 3.50 / San Diego 2.1.5 / SF work-shift baseline before scheduling attempts

[Talk to Servd's AI about your specific California service question →](/chat)