Hot Tub Rules: Hesperia vs San Bernardino
How do hot tub rules rules compare between Hesperia, CA and San Bernardino, CA?
Hesperia and San Bernardino have similar restriction levels.
Hesperia, CA
San Bernardino County
Cal. Health & Safety Code §115921(a) expressly includes 'hot tubs, spas, portable spas' within the definition of 'swimming pool.' Hesperia enforces the Swimming Pool Safety Act and the California Building/Electrical Codes for spa installation under HMC Title 15. Permanently installed spas require a building and electrical permit through the Hesperia Building & Safety Division. A locking safety cover meeting ASTM F1346 is the most common way to satisfy one of the two required SB 442 drowning prevention features.
View full Hesperia rules →San Bernardino, CA
San Bernardino County
San Bernardino treats spas over 18 inches deep as pools under CA H and S Code 115921. A locking ASTM F1346 safety cover can substitute for the perimeter fence on residential hot tubs when kept locked when not in use.
View full San Bernardino rules →Key Facts Comparison
| Fact | Hesperia | San Bernardino |
|---|---|---|
| Statutory inclusion | Hot tubs/spas are 'pools' under HSC §115921(a) | - |
| Permit | Building + electrical permit for permanently installed spas | Building and electrical |
| Most common compliance | ASTM F1346 locking safety cover + 1 additional SB 442 feature | - |
| Portable spas | May skip building permit but SB 442 still applies if >18 inches deep | - |
| Definition Trigger | - | Over 18 inches deep |
| Cover Standard | - | ASTM F1346 locking |
| Electrical | - | 240V GFCI, bonded |
| Max Temperature | - | 104 F |
Highlighted rows indicate differences between cities.
Hesperia FAQ
Does a plug-in portable spa need a permit?
A cord-and-plug 120V portable spa generally does not require a building or electrical permit, but if it holds water more than 18 inches deep it is a 'swimming pool' under HSC §115921(a) and the SB 442 two-feature safety requirement applies.
Is a locking spa cover enough by itself?
An ASTM F1346 compliant safety cover counts as one of the two required SB 442 features (HSC §115922(a)(3)). A second feature — such as exit door alarms or a self-latching door — is still required.
San Bernardino FAQ
Do I need to fence a hot tub in San Bernardino?
Not if you install a rigid locking safety cover meeting ASTM F1346 and keep it locked when the spa is not in use. The cover substitutes for the perimeter barrier and satisfies the state secondary safety feature requirement.
Does my spa need a dedicated electrical circuit?
Yes. California Electrical Code requires a dedicated 240-volt GFCI-protected circuit with a disconnect between 5 and 50 feet from the spa. A licensed electrician should handle the install and pass inspection.
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