California landlords are responsible for keeping every rental unit safe, sanitary, and legally habitable for the entire tenancy, and for following a detailed set of rules on deposits, entry, rent increases, evictions, disclosures, and fair housing. The obligations run from the plumbing in the walls to the paperwork at lease signing, and the penalties for skipping steps are usually far larger than the cost of doing them right. Here is what the law actually requires if you rent out residential property in California.
Keeping the Unit Habitable
Every residential lease in California carries an implied warranty of habitability. Civil Code § 1941.1 lists the conditions that make a dwelling “tenantable,” and the landlord must meet them at move-in and maintain them throughout the tenancy.1California Legislative Information. California Civil Code 1941.1
Utilities
Plumbing and gas facilities must have met code when installed and must remain in good working order. The water supply has to deliver hot and cold running water and connect to an approved sewage system. Heating must conform to the code that applied at installation and stay functional; California’s residential standards have long required heating capable of maintaining at least 68°F indoors. Electrical wiring, lighting, and related equipment follow the same rule.
When any of these systems fails and the landlord doesn’t fix it, the unit can be declared untenantable, which unlocks the tenant remedies discussed at the end of this article.
Weatherproofing and Structure
The roof and exterior walls must be effectively waterproofed and weather-protected, and windows and doors must be unbroken. Floors, stairways, and railings have to be kept in good repair. A rotting stair tread or a wobbly railing is both a safety violation and a liability exposure if someone gets hurt.
Sanitation and Pests
The unit must be free of rodents and vermin at the start of the tenancy, and the landlord is responsible for controlling infestations that develop later, regardless of how the pests arrived. Section 1941.1 also requires adequate garbage receptacles kept in clean condition. Significant mold tied to leaks, poor ventilation, or other building defects is the landlord’s problem to remediate; minor surface mildew a tenant can wipe away is not.
Safety Devices and Locks
Smoke detectors are required inside each bedroom, in the hallway outside sleeping areas, and on every level of the dwelling, including basements. They must use 10-year sealed batteries or be hardwired. Carbon monoxide detectors are required in any unit with a fossil-fuel-burning heater or appliance, a fireplace, or an attached garage.2California Legislative Information. California Code HSC 17926 Keeping these devices working is an ongoing duty, not a one-time install.
Civil Code § 1941.3 requires a deadbolt lock on every entry door and operable locking devices on windows designed to open.3California Legislative Information. California Code CIV 1941.3 Neglecting these features can expose the landlord to liability for break-ins that working locks would have prevented.
Common Areas
Hallways, stairwells, elevators, parking structures, and laundry rooms are the landlord’s direct responsibility. They must be clean, well-lit, and free of obstructions. A slip in an unlit stairwell or an assault in a neglected garage can generate serious insurance exposure, and blocked accessible routes in covered buildings can become a federal fair-housing problem.4eCFR. Part 100 – Discriminatory Conduct Under the Fair Housing Act
Security Deposits
Since July 1, 2024, the security deposit is capped at one month’s rent, furnished or unfurnished. There is one narrow exception: landlords who are natural persons (or LLCs made up entirely of natural persons) and who own no more than two residential properties totaling four or fewer units may charge up to two months’ rent.5California Attorney General. Know Your Rights as a California Tenant – Security Deposits
After move-out, the landlord has 21 days to return the deposit in full, or return the remainder with an itemized statement showing every deduction and its amount.6California Courts. Guide to Security Deposits in California You can deduct for unpaid rent, cleaning beyond normal wear and tear, and damage the tenant caused. Faded paint, minor nail holes, and everyday carpet wear are wear and tear that you absorb. Holes in walls, carpet burns, and broken windows are tenant damage.
Missing the 21-day deadline or the itemization is the most common expensive mistake landlords make. Courts can award the tenant up to twice the deposit as a penalty for bad-faith withholding.
Entering the Unit
Owning the building does not give you unlimited access. Civil Code § 1954 requires written notice stating the date, approximate time, and purpose of the visit. Twenty-four hours is presumed reasonable.7California Legislative Information. California Code CIV 1954
Entry is permitted only for specific reasons: necessary or agreed-upon repairs, showing the unit to prospective buyers or tenants, or contractor work. It has to occur during normal business hours unless the tenant consents otherwise at the time. An oral agreement to enter for repairs works if it specifies a date and approximate time within one week.
No notice is required in three situations: genuine emergencies, when the tenant is present and consents, and when the tenant has abandoned or surrendered the unit. Outside those, showing up unannounced or letting yourself in while the tenant is at work violates the statute.
Rent Increases and Ending a Tenancy
The California Tenant Protection Act (AB 1482) caps annual rent increases for most residential tenancies at 5% plus the local consumer price index, with a hard ceiling of 10% no matter how high inflation runs. For the period from August 2025 through July 2026, the maximum in many parts of the state lands around 6% to 7% depending on the local CPI figure.8City and County of San Francisco. The California Tenant Protection Act of 2019 AB 1482
The same law requires just cause to terminate a tenancy once all tenants have lived in the unit for at least 12 months, or at least one tenant has occupied it for 24 months. The termination notice must state one of the statute’s specific reasons, including nonpayment of rent, lease violations, and certain owner or family move-in situations. Some properties are exempt, including certain single-family homes and newer construction, but each exemption comes with conditions worth verifying before you rely on it.
Required Disclosures
Several written disclosures have to accompany a California lease. They are not physical repairs, but skipping them creates real exposure.
- Lead-based paint. Federal law requires disclosure of any known lead-based paint or lead hazards in housing built before 1978. The tenant must receive an EPA-approved pamphlet and sign an acknowledgment. Penalties are substantial and assessed per violation.9US EPA. Lead-Based Paint Disclosure Rule Section 1018 of Title X
- Flood hazard. For leases entered into after July 1, 2018, landlords with actual knowledge that a unit sits in a special flood hazard area or an area of potential flooding must disclose that fact.10Department of Real Estate. Landlords and Tenants Rights Guide – When You Have Decided to Rent
- Bed bugs. Information about bed bug infestations must be provided as part of the rental agreement.
- Mold. If you know of mold conditions that exceed safe levels or pose a health risk, you must disclose them.
Put every disclosure in writing and keep the signed acknowledgment on file. Failing to deliver a required disclosure can trigger statutory penalties and, in some cases, give the tenant grounds to terminate the lease.
Fair Housing and Reasonable Accommodations
The federal Fair Housing Act prohibits discrimination in housing based on race, color, religion, sex, disability, familial status, or national origin.4eCFR. Part 100 – Discriminatory Conduct Under the Fair Housing Act California’s Fair Employment and Housing Act adds further protected categories. A landlord cannot refuse to rent, set different lease terms, or steer applicants based on any protected characteristic.
Tenants with disabilities are entitled to reasonable accommodations, meaning changes to rules or policies that give a person with a disability equal opportunity to use and enjoy the housing. Waiving a no-pets policy for an assistance animal is the common example. The animal does not need to be a trained service dog; emotional support animals that alleviate the effects of a documented disability qualify. You cannot charge a pet deposit or fee for an assistance animal.11U.S. Department of Housing and Urban Development. Assistance Animals The only grounds for denial are if the specific animal would pose a direct safety threat or cause significant property damage that no other accommodation could address.
You also cannot ask an applicant whether they have a disability or how severe it is. When a disability and the need for an accommodation are not obvious, you may request reliable supporting information, and that is the limit.
What Happens If You Don’t Comply
California gives tenants several tools when a landlord ignores habitability problems, and the financial exposure they create is the real reason to fix things promptly.
Repair and Deduct
Under Civil Code § 1942, a tenant can arrange for repairs and deduct the cost from rent when the landlord fails to fix a habitability defect within a reasonable time after notice. Thirty days is presumed reasonable, though urgent situations can justify less. The deduction cannot exceed one month’s rent, and the remedy is available no more than twice in any 12-month period.12California Legislative Information. California Code CIV 1942
Rent Withholding and Court Claims
When conditions are severe enough to render a unit uninhabitable, tenants may withhold rent entirely until repairs are made. If the landlord files to evict, the tenant raises habitability as a defense. Tenants can also file affirmative claims in small claims court.13California Courts. Deciding Between Small Claims and Limited Civil
Retaliation Is Off the Table
If a tenant complains about habitability, reports a bed bug infestation, or files a complaint with a government agency, the landlord cannot raise the rent, reduce services, or try to evict the tenant for 180 days after the complaint.14California Legislative Information. California Code CIV 1942.5 The same 180-day window applies after a government inspection, a citation, or a court judgment on habitability. Threatening to report a tenant or their associates to immigration authorities is explicitly classified as prohibited retaliation. A tenant can invoke these protections once per 12-month period.
Landlords who understand these remedies tend to fix problems faster, which is exactly what the law is designed to produce. The cost of a successful tenant claim almost always exceeds the cost of timely repairs.