In California, what makes a rented home legally unfit to live in?
Answered for: California
1941.1. (a) A dwelling shall be deemed untenantable for purposes of Section 1941 if it substantially lacks any of the following affirmative standard characteristics or is a residential unit described in Section 17920.3 or 17920.10 of the Health and Safety Code: (1) Effective waterproofing and weather protection of roof and exterior walls, including unbroken windows and doors. (2) Plumbing or gas facilities that conformed to applicable law in effect at the time of installation, maintained in good working order. (3) A water supply approved under applicable law that is under the control of the tenant, capable of producing hot and cold running water, or a system that is under the control of the landlord, that produces hot and cold running water, furnished to appropriate fixtures, and connected to a sewage disposal system approved under applicable law. (4) Heating facilities that conformed with applicable law at the time of installation, maintained in good working order. (5) Electrical lighting, with wiring and electrical equipment that conformed with applicable law at the time of installation, maintained in good working order. (6) Building, grounds, and appurtenances at the time of the commencement of the lease or rental agreement, and all areas under control of the landlord, kept in every part clean, sanitary, and free from all accumulations of debris, filth, rubbish, garbage, rodents, and vermin. (7) An adequate number of appropriate receptacles for garbage and rubbish, in clean condition and good repair at the time of the commencement of the lease or rental agreement, with the landlord providing appropriate serviceable receptacles thereafter and being responsible for the clean condition and good repair of the receptacles under their control. (8) Floors, stairways, and railings maintained in good repair. (9) A locking mail receptacle for each residential unit in a residential hotel, as required by Section 17958.3 of the Health and Safety Code. This subdivision shall become operative on July 1, 2008. (10) Except as provided in subdivision (b), a stove that is maintained in good working order and capable of safely generating heat for cooking purposes. A stove that is subject to a recall by the manufacturer or a public entity is not capable of safely generating heat for cooking purposes. This paragraph shall only apply to a lease entered into, amended, or extended on or after January 1, 2026. (11) (A) Except as provided in subdivision (b) and subparagraph (B), a refrigerator that is maintained in good working order and capable of safely storing food. A refrigerator that is subject to recall by the manufacturer or a public entity is not capable of safely storing food. [...] (C) This paragraph shall only apply to a lease entered into, amended, or extended on or after January 1, 2026. [...] (Amended by Stats. 2025, Ch. 342, Sec. 1. (AB 628) Effective January 1, 2026.)
This section lists what a rented home must have; if it substantially lacks any of them it is treated as unfit to live in for purposes of section 1941. The list includes a weatherproof roof and exterior walls with unbroken windows and doors, working plumbing and gas, hot and cold running water connected to approved sewage disposal, working heat, working electrical lighting and wiring, clean grounds free of debris and vermin, enough garbage receptacles, and floors, stairways and railings in good repair. The section also adds a working stove and a working refrigerator, but only for leases entered into, amended or extended on or after January 1, 2026, and subject to the exceptions in subdivision (b).
This answer is true in California and nowhere else on this site. Another jurisdiction is another answer, or an honest gap: see what has been read for California.