Smoke Detectors: Antioch vs Walnut Creek
How do smoke detectors rules compare between Antioch, CA and Walnut Creek, CA?
Antioch and Walnut Creek 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 →Walnut Creek, CA
Contra Costa County
Smoke alarms are required in every sleeping room, outside each sleeping area, and on every level of a home in Walnut Creek under the California Residential Code and Health & Safety Code Sections 13113.7 and 13114. Alarms installed since 2015 must be 10-year sealed-battery or hardwired; carbon monoxide alarms are also mandatory.
View full Walnut Creek rules →Key Facts Comparison
| Fact | Antioch | Walnut Creek |
|---|---|---|
| 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.
Walnut Creek FAQ
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