By yaron · 2026-02-09 · 5 min read
A commercial unlawful detainer rises or falls on the notice. The drafting choices that survive demurrer, and the ones that do not.
Commercial unlawful detainer is a summary procedure that moves quickly when it is built correctly and collapses entirely when it is not. The complaint can be artful, the proof of service can be flawless, and the trial brief can be persuasive, but if the 3-day notice fails, the entire action fails. We have seen judgments reversed and writs of possession set aside over notice defects that took the landlord ten minutes to commit and the tenant six months to litigate.
The commercial 3-day notice is governed by CCP § 1161(2). The notice must demand payment of rent due, identify the amount with precision, name the person to whom payment may be made and the address, and provide for an alternative form of delivery (in person, by mail, or by electronic transfer where authorized). Any defect in any of those elements is grounds for demurrer or motion in limine at trial.
The single most common defect we see in opposing-counsel-drafted notices is an overstated amount. Commercial notices may demand only rent. Not late fees, not common-area maintenance charges absent specific lease language characterizing them as additional rent, not attorney fees, and not pre-suit interest. Overstate the demand by a dollar and the notice is void.
Before drafting, pull the lease, identify the rent provision verbatim, identify what is characterized as "additional rent" by the lease (and what is not), and reconcile the ledger. The amount that goes on the 3-day notice should match the ledger to the penny.
Three days means three full days, excluding the date of service and the day the tenant has to pay or quit. Saturdays, Sundays, and judicial holidays are excluded under CCP § 12a. Serve on a Friday and the notice does not expire until end-of-day the following Wednesday. Filing the complaint before the period expires renders the action premature and provides the tenant with an affirmative demurrer ground.
CCP § 1162 authorizes three methods of service: (1) personal delivery; (2) leaving a copy with a person of suitable age and discretion at the tenant's residence or place of business and mailing a copy; and (3) posting the notice on the premises in a conspicuous place and mailing a copy. The third method requires the landlord to have first attempted methods one and two with reasonable diligence. "Nail and mail" without reasonable-diligence attempts is defective service.
Document the service attempts. A declaration of service from the process server that recites the attempts, dates, and times will support the unlawful detainer at trial. A bare proof of service that recites only the final posting will not.
Identify the tenant by every name appearing on the lease, including any DBAs, guarantor names, and assignees. Name the premises by address and suite, not by a description. Cite the lease and the specific rent provision being enforced. Specify the alternative forms of payment with sufficient detail (account number, address, name) that the tenant can comply without ambiguity. Sign the notice in the name of the landlord or the landlord's authorized agent, and confirm authority to act before signing.
A 3-day notice in a non-payment case offers two options: pay the amount stated, or surrender possession. It is not the place for the landlord's broader grievances about the tenant. Those go in a separate breach-of-covenants notice under CCP § 1161(3), which has its own drafting requirements and which we handle as a parallel track when the facts call for it.
Treat the 3-day notice as the most important document in the entire unlawful detainer. Spend the time on it that you would spend on the complaint. A well-drafted notice produces a clean judgment in 30 to 60 days; a defective notice produces six months of litigation, a setback at trial, and the landlord starting over with a new notice while the unpaid rent compounds.
If you are a commercial landlord with a tenant in non-payment, do not draft the notice in-house. The cost of doing it right is a fraction of the cost of doing it twice.
This article is general information about California law. It is not legal advice and is not a substitute for advice from an attorney who knows the facts of your situation.
Reading it does not create an attorney-client relationship with Yasmeh Law Group, and neither does contacting the firm. That relationship begins only after a conflicts check and a signed written engagement agreement. Do not send confidential information before then.
The statutes and deadlines described were accurate as understood on 2026-02-09. California law changes and any rule depends on the particular facts. Case results mentioned do not guarantee a similar outcome. Yasmeh Law Group practices only in California.
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