Cal. Civ. Code § 55.1-1227

A. In addition to the provisions of the rental agreement, the tenant shall:
1. Comply with all obligations primarily imposed upon tenants by applicable provisions of building and housing codes materially affecting health and safety;
2. Keep that part of the dwelling unit and the part of the premises that he occupies and uses as clean and safe as the condition of the premises permit;
3. Keep that part of the dwelling unit and the part of the premises that he occupies free from insects and pests, as those terms are defined in § 3.2-3900 , and promptly notify the landlord of the existence of any insects or pests;
4. Remove from his dwelling unit all ashes, garbage, rubbish, and other waste in a clean and safe manner and in the appropriate receptacles provided by the landlord;
5. Keep all plumbing fixtures in the dwelling unit or used by the tenant as clean as their condition permits;
6. Use in a reasonable manner all utilities and all electrical, plumbing, sanitary, heating, ventilating, air-conditioning, and other facilities and appliances, including an elevator in a multifamily premises, and keep all utility services paid for by the tenant to the utility service provider or its agent on at all times during the term of the rental agreement;
7. Not deliberately or negligently destroy, deface, damage, impair, or remove any part of the premises or permit any person, whether known by the tenant or not, to do so;
8. Not remove or tamper with a properly functioning smoke alarm installed by the landlord, including removing any working batteries, so as to render the alarm inoperative. The tenant shall maintain the smoke alarm in accordance with the uniform set of standards for maintenance of smoke alarms established in the Statewide Fire Prevention Code (§ 27-94 et seq.) and subdivision C 6 of § 36-105 , Part III of the Uniform Statewide Building Code (§ 36-97 et seq.);
9. Not remove or tamper with a properly functioning carbon monoxide alarm installed by the landlord, including the removal of any working batteries, so as to render the carbon monoxide alarm inoperative. The tenant shall maintain the carbon monoxide alarm in accordance with the uniform set of standards for maintenance of carbon monoxide alarms established in the Statewide Fire Prevention Code (§ 27-94 et seq.) and subdivision C 6 of § 36-105 , Part III of the Uniform Statewide Building Code (§ 36-97 et seq.);
10. Use reasonable efforts to maintain the dwelling unit and any other part of the premises that he occupies in such a condition as to prevent accumulation of moisture and the growth of mold and promptly notify the landlord of any moisture accumulation that occurs or of any visible evidence of mold discovered by the tenant;
11. Not paint or disturb painted surfaces or make alterations in the dwelling unit without the prior written approval of the landlord, provided that (i) the dwelling unit was constructed prior to 1978 and therefore requires the landlord to provide the tenant with lead-based paint disclosures and (ii) the landlord has provided the tenant with such disclosures and the rental agreement provides that the tenant is required to obtain the landlord's prior written approval before painting, disturbing painted surfaces, or making alterations in the dwelling unit;
12. Be responsible for his conduct and the conduct of other persons, whether known by the tenant or not, who are on the premises with his consent, to ensure that his neighbors' peaceful enjoyment of the premises will not be disturbed;
13. Abide by all reasonable rules and regulations imposed by the landlord;
14. Be financially responsible for the added cost of treatment or extermination due to the tenant's unreasonable delay in reporting the existence of any insects or pests and be financially responsible for the cost of treatment or extermination due to the tenant's fault in failing to prevent infestation of any insects or pests in the area occupied; and
15. Use reasonable care to prevent any dog or other animal in possession of the tenant, authorized occupants, or guests or invitees from causing personal injuries to a third party in the dwelling unit or on the premises, or property damage to the dwelling unit or the premises.
B. If the duty imposed by subdivision A 1 is greater than any duty imposed by any other subdivision of that subsection, the tenant's duty shall be determined by reference to subdivision A 1.