How to Serve a 3-Day Notice in California: Methods, Proof, and Timing

To serve a 3-day notice in California, have someone who is at least 18 and not a party to the case deliver it to the tenant in person; if that fails, use substituted service, and only if that fails, posting and mailing. Then write up a signed declaration describing exactly what happened. Service is the piece of an eviction tenants attack first, so the method you choose and the paperwork you keep afterward decide whether the notice survives a court challenge.

Who Can Serve the Notice

Any person who is at least 18 years old and not a party to the eviction can serve a 3-day notice. That rules out the landlord personally handing the notice to the tenant. A friend, employee, property manager, or professional process server can all do the job.

A registered process server is worth serious consideration. When tenants challenge an eviction, service is often the first thing they attack, and a professional server keeps detailed attempt logs with dates, times, and descriptions of what happened at each visit. That documentation holds up far better in court than a one-sentence declaration from a friend who taped the notice to the door. The cost typically runs between $20 and $100 for a standard delivery, though rush jobs and multiple attempts cost more.

The Three Legal Methods, in Order

California Code of Civil Procedure section 1162 sets out three service methods, and they follow a strict hierarchy. You cannot skip to an easier method without first trying the harder ones.¹

Personal Service

The preferred method is handing the notice directly to the tenant. This creates the strongest proof of delivery and leaves the tenant no room to argue they never received it. If you can track down the tenant and put the paper in their hand, that is always the best option.¹ Personal service also starts the three-day clock without any mailing add-on.

Substituted Service

When the tenant is not home and cannot be found at their usual workplace, the server can leave the notice with another person of suitable age and discretion at the tenant’s residence. A second copy must then be mailed to the tenant by first-class mail at the rental property address.¹ Substituted service is not a shortcut. The server needs a real reason personal service did not work, and the file should reflect the attempts made before falling back to this method.

Posting and Mailing

Only after personal and substituted service both fail can the server resort to this method. It involves attaching the notice to a conspicuous spot on the property, such as the front door, and separately mailing a copy to the tenant by first-class mail.¹ Courts scrutinize this method more closely than the other two, so the server should document exactly why personal and substituted service were impossible: the times of day attempted, whether anyone answered, whether the tenant’s workplace was known, and any other facts that show the earlier methods were tried in good faith.

Documenting Proof of Service

After delivering the notice, the person who served it should immediately prepare a written declaration describing what happened. This is not a court form. It is a document the server creates, signed under penalty of perjury, that records the tenant’s name, the date and time of service, the method used, and the address where service occurred. If substituted service was used, the declaration should also identify the person who accepted the notice.

This declaration becomes critical evidence if the landlord later files an unlawful detainer lawsuit. Judges routinely dismiss eviction cases when the landlord cannot prove the 3-day notice was properly served. The more detail in the declaration, the harder it is for the tenant to challenge service. A good proof of service also notes any failed attempts, describes the property, and explains why a particular method was chosen.

Do not confuse this declaration with the Proof of Service of Summons (POS-010). POS-010 is the Judicial Council form used later, when the landlord serves the unlawful detainer complaint and summons to open the court case.² It is not the paperwork for the 3-day notice itself.

When the Three Days Actually Start Running

The three-day clock does not start on the day the notice is served. It begins the following day, and Saturdays, Sundays, and judicial holidays are excluded from the count.³ A notice served on a Friday, for example, does not expire until the following Wednesday, because Saturday and Sunday do not count. If a court holiday falls within the period, that day is skipped as well.

For substituted service or posting and mailing, additional mailing time may apply before the notice period starts running. If you served by one of these backup methods, build extra days into the timeline before assuming the notice has expired.

Federal Rules That Change What You Serve

Before any 3-day notice goes out, confirm whether federal law imposes additional requirements on the property. These are not alternatives to California service. They stack on top of it.

CARES Act 30-Day Notice

Properties with federally backed mortgage loans, including those receiving certain federal housing assistance, qualify as covered dwellings under the CARES Act. For these properties, landlords must provide tenants with at least 30 days’ notice before requiring them to vacate for nonpayment of rent. This 30-day requirement applies on top of the state 3-day notice, not instead of it.⁴ Ignoring this step at a covered property hands the tenant a strong defense in court.

Servicemembers Civil Relief Act

A landlord cannot evict an active-duty service member or their dependents from a residence without first obtaining a court order, regardless of how California normally handles evictions. The protection applies to rental units where the monthly rent falls below a threshold that adjusts annually for inflation, based on the CPI housing component starting from a $2,400 base in 2003.⁵ If a landlord pursues a default judgment against a tenant who may be in military service, the landlord must file an affidavit with the court disclosing that status, and the court may appoint an attorney to protect the service member’s interests.⁶

Mistakes That Void a Properly Served Notice

Good service can still be undone by what the landlord does next. Two mistakes come up often enough to flag.

The first is accepting a partial rent payment after serving a 3-day notice to pay rent or quit. For residential tenancies, taking any partial payment after service effectively kills the notice, and the landlord has to serve a fresh one for the remaining balance and restart the timeline. Commercial landlords have a narrow statutory exception that lets them accept partial rent and still pursue eviction for the unpaid balance, provided the complaint specifies the difference.⁷ Residential landlords get no such protection.

The second is trying to speed things up with self-help after the three days expire. You cannot change the locks, shut off utilities, remove doors or windows, or haul away the tenant’s belongings. Only a court order authorizes actual removal, and the tenant can sue for actual damages plus $100 for each day the violation continues, along with attorney fees.⁸ Rushing service or the steps that follow it is never worth it. A defective notice, or an illegal move after a good one, throws the case out and forces the landlord to start over.

1
California Legislative Information. California Code of Civil Procedure 1162
2
Judicial Branch of California. Proof of Service of Summons POS-010
3
California Legislative Information. California Code CCP 1161
4
Federal Register. Rescinding 30-Day Notification Requirements Related to Eviction Based on Nonpayment of Rent in Multi-Family Housing Direct Properties
5
Office of the Law Revision Counsel. 50 USC 3951 – Evictions and Distress
6
U.S. Department of Justice. Financial and Housing Rights
7
California Legislative Information. California Code of Civil Procedure 1161.1
8
California Legislative Information. California Civil Code 789.3