Smoke Detectors: Hesperia vs Ontario
How do smoke detectors rules compare between Hesperia, CA and Ontario, CA?
Hesperia and Ontario 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 →Ontario, CA
San Bernardino County
Ontario enforces California H and S 13113.7 requiring smoke alarms in every bedroom, outside sleeping areas, and on every floor. 10-year sealed-battery or hardwired units are required on replacement.
View full Ontario rules →Key Facts Comparison
| Fact | Hesperia | Ontario |
|---|---|---|
| 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 | - |
| State authority | - | CA H and S 13113.7 |
| Required locations | - | Each bedroom, hallway, every floor |
| Alarm type | - | 10-year sealed or hardwired backup |
| Rental rule | - | Test before each new tenancy |
| Retrofit trigger | - | Work over 1,000 dollars |
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.
Ontario FAQ
Do I need hardwired alarms in an older Ontario house?
Homes built before 1992 can generally use 10-year sealed battery alarms, but hardwired alarms with battery backup are required when a permit for significant work is issued.
Who is responsible for alarms in a rental home?
The landlord must install, test, and maintain alarms and verify they work before each new tenant moves in under California Civil Code 1941.1.
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