California smoke detector law, found in Health and Safety Code 13113.7, makes your landlord install and maintain working smoke alarms. If your letter cites it, know this: California smoke detector law presumes 24 hours’ written notice is reasonable.
What California Smoke Detector Law Actually Says
The law starts with a simple rule. Every dwelling meant for people to live in must have smoke alarms. The alarms must be approved and listed by the State Fire Marshal under Section 13114. They must also be installed following the maker’s instructions. You can read the full text in Health and Safety Code 13113.7.
California smoke detector law allows battery-operated alarms, unless a local rule forbids them. A full fire alarm system with smoke detectors can also count. As a result, your landlord has some choice in the type of alarm. However, the alarm must work, and it must be in the right place.
For rentals, the law sets a clear timeline. Apartment and other multi-unit owners already had testing duties. Starting January 1, 2014, owners of rented single-family homes got the same duties. By January 1, 2016, rental owners had to add alarms as needed to meet current building standards. That deadline passed years ago. As a result, your rental should already comply with California smoke detector law.
| Provision | Exact rule | Section |
|---|---|---|
| Alarms required | State Fire Marshal-approved and listed smoke alarms in each dwelling, installed per the maker’s instructions | 13113.7(a)(1) |
| Permit sign-off | For permits issued on or after January 1, 2014, for work over $1,000, alarms must be approved and listed before the work is signed off | 13113.7(a)(2) |
| Battery alarms | Allowed unless local rules prohibit them | 13113.7(a)(4) |
| Single-family rentals | Owner must test and maintain alarms starting January 1, 2014 | 13113.7(d)(2) |
| Entry notice | Reasonable written notice, normal business hours, except emergencies; 24 hours presumed reasonable | 13113.7(d)(2)(A) |
| New tenancy | Alarms must be operable when a new tenancy starts | 13113.7(d)(2)(B) |
| Added alarms | By January 1, 2016, add alarms as needed to meet current building standards | 13113.7(d)(3) |
| Penalty | Infraction, maximum fine of $200 for each offense | 13113.7(e) |
Who California Smoke Detector Law Covers (and Who It Does Not)
California smoke detector law covers most places renters live. The statute lists one- and two-unit dwellings, lodging houses, apartment complexes, hotels, and motels. It also covers condominiums, stock cooperatives, time-share projects, and units in multi-unit complexes. Factory-built housing under Section 19971 is covered too. For example, if you rent a condo from its owner, the law applies to you.
However, some homes are left out. Manufactured homes under Section 18007 are not covered. Mobilehomes under Section 18008 and commercial coaches under Section 18001.8 are also excluded. A high-rise used for purposes other than homes is exempt as well. If you rent a mobilehome, other rules may apply. Check with your local fire department or a legal-aid office.
Local rules can add more. Some cities adopted ordinances before January 1, 1987, requiring hardwired alarms. Those local compliance dates can take priority under California smoke detector law. A city can also ban battery-only alarms. As a result, your city may demand more than the state does. In most cases, your city building or fire office can tell you the local rule.
What Your Landlord Must Do Under This Law
Your landlord’s first duty comes on move-in day. When a new tenancy starts, the owner must make sure the smoke alarms work. After that, the owner must test and maintain them. California smoke detector law puts this duty on the owner, not on you. Typically, existing alarms do not need replacing unless they stop working.
You do have one duty. If you learn an alarm is not working, you must tell the manager or owner. The owner must then fix it. However, the owner is not in violation for a broken alarm they were never told about. That is why a written report matters so much under California smoke detector law.
Your landlord may enter your unit to install, repair, test, or maintain alarms. Except in an emergency, they must give you written notice first. They must also come only during normal business hours.
What You Can Do When It Is Broken
Start with a written report. Tell your landlord which alarm is broken and when you noticed. Keep a copy, a photo, or a screenshot. Under California smoke detector law, that notice is what triggers your landlord’s duty to fix it. Meanwhile, do not remove batteries or disconnect an alarm. That could put you and your neighbors at risk.
If your landlord ignores you, you can report it. In most cases, tenants contact the local fire department or city code enforcement office. Confirm which office handles smoke alarm complaints in your city. A violation of California smoke detector law is an infraction. The maximum fine is $200 for each offense.
The law also says it does not affect your other legal rights. For example, other California laws on safe housing may still help you. If your landlord threatens eviction after you complain, contact a local legal-aid office or tenant attorney right away. Many tenants can get free help. California smoke detector law is one tool, not your only one.
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Frequently Asked Questions
Is it my job to replace dead batteries?
California smoke detector law makes the owner responsible for testing and maintaining alarms. Your stated duty is to tell the owner or manager when an alarm does not work. The statute does not spell out battery duties, so check your lease and ask legal aid if there is a dispute.
Can my landlord come in without notice to check the alarms?
Not usually. Except in emergencies, your landlord must give reasonable written notice and enter during normal business hours. Under California smoke detector law, 24 hours is presumed reasonable unless there is evidence otherwise.
Does this law apply if I rent a mobilehome?
No. California smoke detector law excludes mobilehomes, manufactured homes, and commercial coaches. Other rules may apply, so check with your local fire department or a legal-aid office.
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Sources & How to Verify
The rules on this page are drawn from official government and legal-aid sources. Tenant law changes, so always confirm the exact rule with your state’s statute or a local legal-aid office.
- HUD: hud.gov — federal renter protections and fair housing
- Legal Services Corporation: lsc.gov — find free legal aid in your state
- Cornell Legal Information Institute: law.cornell.edu/wex — plain-English legal definitions
- Your state statute & court self-help portal: search “[your state] landlord tenant act” and “[your state] court self-help eviction” for the exact law and forms
Content last reviewed September 2026. If you notice outdated information, please contact us.
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Informational only — not legal advice. Tenant Rights Info is an independent educational resource, not a law firm, and this page does not provide legal advice. Landlord-tenant law varies by state and city and changes over time, so always verify the exact rule with your state’s statute, your local court’s self-help portal, or a legal-aid office. For urgent situations like an active eviction, contact a local legal-aid office or a licensed tenant attorney in your state right away.