2023 California Code › Code of Civil Procedure - CCP › PART 3 - OF SPECIAL PROCEEDINGS OF A CIVIL NATURE › TITLE 3 - OF SUMMARY PROCEEDINGS › CHAPTER 4 - Summary Proceedings for Obtaining Possession of Real Property in Certain Cases › Section 1161.

1161. A tenant of real property, for a term less than life, or the executor or administrator of the tenant’s estate heretofore qualified and now acting or hereafter to be qualified and act, is guilty of unlawful detainer:
1. When the tenant continues in possession, in person or by subtenant, of the property, or any part thereof, after the expiration of the term for which it is let to the tenant; provided the expiration is of a nondefault nature however brought about without the permission of the landlord, or the successor in estate of the landlord, if applicable; including the case where the person to be removed became the occupant of the premises as a servant, employee, agent, or licensee and the relation of master and servant, or employer and employee, or principal and agent, or licensor and licensee, has been lawfully terminated or the time fixed for occupancy by the agreement between the parties has expired; but nothing in this subdivision shall be construed as preventing the removal of the occupant in any other lawful manner; but in case of a tenancy at will, it shall first be terminated by notice, as prescribed in the Civil Code.
2. When the tenant continues in possession, in person or by subtenant, without the permission of the landlord, or the successor in estate of the landlord, if applicable, after default in the payment of rent, pursuant to the lease or agreement under which the property is held, and three days’ notice, excluding Saturdays and Sundays and other judicial holidays, in writing, requiring its payment, stating the amount that is due, the name, telephone number, and address of the person to whom the rent payment shall be made, and, if payment may be made personally, the usual days and hours that person will be available to receive the payment (provided that, if the address does not allow for personal delivery, then it shall be conclusively presumed that upon the mailing of any rent or notice to the owner by the tenant to the name and address provided, the notice or rent is deemed received by the owner on the date posted, if the tenant can show proof of mailing to the name and address provided by the owner), or the number of an account in a financial institution into which the rental payment may be made, and the name and street address of the institution (provided that the institution is located within five miles of the rental property), or if an electronic funds transfer procedure has been previously established, that payment may be made pursuant to that procedure, or possession of the property, shall have been served upon the tenant and if there is a subtenant in actual occupation of the premises, also upon the subtenant.
The notice may be served at any time within one year after the rent becomes due. In all cases of tenancy upon agricultural lands, if the tenant has held over and retained possession for more than 60 days after the expiration of the term without any demand of possession or notice to quit by the landlord or the successor in estate of the landlord, if applicable, the tenant shall be deemed to be holding by permission of the landlord or successor in estate of the landlord, if applicable, and shall be entitled to hold under the terms of the lease for another full year, and shall not be guilty of an unlawful detainer during that year, and the holding over for that period shall be taken and construed as a consent on the part of a tenant to hold for another year.
3. When the tenant continues in possession, in person or by subtenant, after a neglect or failure to perform other conditions or covenants of the lease or agreement under which the property is held, including any covenant not to assign or sublet, than the one for the payment of rent, and three days’ notice, excluding Saturdays and Sundays and other judicial holidays, in writing, requiring the performance of those conditions or covenants, or the possession of the property, shall have been served upon the tenant, and if there is a subtenant in actual occupation of the premises, also, upon the subtenant. Within three days, excluding Saturdays and Sundays and other judicial holidays, after the service of the notice, the tenant, or any subtenant in actual occupation of the premises, or any mortgagee of the term, or other person interested in its continuance, may perform the conditions or covenants of the lease or pay the stipulated rent, as the case may be, and thereby save the lease from forfeiture; provided, if the conditions and covenants of the lease, violated by the lessee, cannot afterward be performed, then no notice, as last prescribed herein, need be given to the lessee or the subtenant, demanding the performance of the violated conditions or covenants of the lease.
A tenant may take proceedings, similar to those prescribed in this chapter, to obtain possession of the premises let to a subtenant or held by a servant, employee, agent, or licensee, in case of that person’s unlawful detention of the premises underlet to or held by that person.
4. Any tenant, subtenant, or executor or administrator of that person’s estate heretofore qualified and now acting, or hereafter to be qualified and act, assigning or subletting or committing waste upon the demised premises, contrary to the conditions or covenants of the lease, or maintaining, committing, or permitting the maintenance or commission of a nuisance upon the demised premises or using the premises for an unlawful purpose, thereby terminates the lease, and the landlord, or the landlord’s successor in estate, shall upon service of three days’ notice to quit upon the person or persons in possession, be entitled to restitution of possession of the demised premises under this chapter. For purposes of this subdivision, a person who commits or maintains a public nuisance as described in Section 3482.8 of the Civil Code, or who commits an offense described in subdivision (c) of Section 3485 of the Civil Code, or subdivision (c) of Section 3486 of the Civil Code, or uses the premises to further the purpose of that offense shall be deemed to have committed a nuisance upon the premises.
5. When the tenant gives written notice as provided in Section 1946 of the Civil Code of the tenant’s intention to terminate the hiring of the real property, or makes a written offer to surrender which is accepted in writing by the landlord, but fails to deliver possession at the time specified in that written notice, without the permission of the landlord, or the successor in estate of the landlord, if applicable.
6. As used in this section, “tenant” includes any person who hires real property except those persons whose occupancy is described in subdivision (b) of Section 1940 of the Civil Code.
7. This section shall become operative on February 1, 2025.
(Repealed (in Sec.15) and added by Stats. 2020, Ch. 37, Sec. 16. (AB 3088) Effective August 31, 2020. Operative February 1, 2025, by its own provisions.)