Smoke Detectors: Antioch vs Martinez
How do smoke detectors rules compare between Antioch, CA and Martinez, CA?
Antioch and Martinez have similar restriction levels.
Antioch, CA
Contra Costa County
Smoke alarms and carbon monoxide detectors are required in every Antioch dwelling under California Health & Safety Code 13113.7 and 13260. Alarms must be installed in every bedroom, outside sleeping areas, and on each floor. Sale or rental of a property triggers a mandatory compliance inspection.
View full Antioch rules →Martinez, CA
Contra Costa County
Martinez requires working smoke alarms in all residential dwellings under California Health & Safety Code §13113.7 and the California Building Code. Alarms are required in each bedroom, outside each sleeping area, and on every level. Sealed 10-year battery or hardwired alarms required for new installations.
View full Martinez rules →Key Facts Comparison
| Fact | Antioch | Martinez |
|---|---|---|
| Smoke alarm law | H&S Code 13113.7 | - |
| CO detector law | H&S Code 13260 | - |
| Battery type | 10-year sealed (since 2015) | - |
| Required locations | Each bedroom, hallway, every floor | - |
| Landlord duty | Install at turnover; tenant maintains | - |
| - | - |
Highlighted rows indicate differences between cities.
Antioch FAQ
Do I need CO detectors if I have an all-electric home?
Only if you have an attached garage. Fully electric homes without attached garages or fuel-burning appliances are exempt from the CO detector requirement.
Who is responsible in a rental - landlord or tenant?
The landlord must install and certify functional alarms at tenant move-in. Tenants must test monthly and replace batteries during their tenancy; landlords handle replacements of the sealed units.
Martinez FAQ
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