Smoke Detectors: Hesperia vs San Bernardino
How do smoke detectors rules compare between Hesperia, CA and San Bernardino, CA?
Hesperia and San Bernardino have similar restriction levels.
Hesperia, CA
San Bernardino County
California Health and Safety Code 13113.7 requires smoke alarms in every bedroom, outside each sleeping area, and on every floor of all California dwellings. Alarms installed after July 2014 must be 10-year sealed-battery or hardwired with battery backup. County inspections on sales and rental turnover verify compliance.
View full Hesperia rules →San Bernardino, CA
San Bernardino County
San Bernardino dwellings must have working smoke alarms in every sleeping room and on every level under CA H&S 13113.7, plus CO alarms in homes with fuel appliances or attached garages.
View full San Bernardino rules →Key Facts Comparison
| Fact | Hesperia | San Bernardino |
|---|---|---|
| State Law | H&S Code 13113.7 | - |
| Standard | UL 217, 10-yr sealed or hardwired | - |
| Placement | Every bedroom, hall, floor | - |
| CO Alarms | Required with fuel appliances | - |
| Smoke alarm law | - | CA H&S 13113.7 requires alarms in every bedroom and level |
| CO alarm law | - | CA H&S 13262 requires CO alarms when fuel appliance or attached garage |
| Battery rule | - | Replacement alarms must be 10-year sealed battery units |
| Sale or remodel | - | Alarms must be upgraded to current code at transfer or major remodel |
| Habitability | - | Missing alarms are a rental defect under Civil Code 1941.1 |
Highlighted rows indicate differences between cities.
Hesperia FAQ
Do I need smoke alarms in every bedroom in San Bernardino County?
Yes. California Health and Safety Code 13113.7 requires alarms inside every sleeping room, outside each sleeping area, and on every floor, in every dwelling in the state including the unincorporated county. Alarms installed after July 2014 must be 10-year sealed-battery or hardwired.
Do short-term rentals in Joshua Tree need special alarm rules?
Yes. Short-term rentals must meet all statewide alarm requirements plus any conditions in their county STR permit, which often requires documented testing. Missing alarms can lead to permit revocation and civil liability after any fire incident.
San Bernardino FAQ
Where exactly must my smoke alarms be?
Inside every bedroom, outside each sleeping area in the hallway, and on every level of the home including basements.
Do I need a CO alarm?
Yes if your home has any gas appliance, wood fireplace, or attached garage, under California Health and Safety Code 13262.
Can I still use 9-volt battery alarms?
Existing units remain legal, but any replacement in California must be a listed 10-year sealed battery alarm.
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