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Imperial County, CA Noise from Specific Sources: Car Alarm Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Max sounding time
20 minutes
Applies to
buildings and vehicles
Enforcement
sheriff's deputy may disconnect
Also required
posted contact phone number

Summary

Imperial County requires audible burglar alarms on buildings and vehicles to shut off automatically within 20 minutes of activation, and lets deputies disconnect one that won't stop.

These county ordinances apply to unincorporated areas of Imperial County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Audible burglar alarms for structures or motor vehicles shall be capable of being terminated within twenty (20) minutes of being activated.B.Notwithstanding the requirements of this provision, any member of the sheriff department of Imperial County shall have the right to take such steps as may be reasonable and necessary to disconnect any such alarm installed in any building, dwelling, or motor vehicle at any time during the period of its activation. On or after thirty (30) days from the effective date of this chapter, any building, dwelling or motor vehicle upon which a burglar alarm has been installed shall prominently display the telephone number at which communication may be made with the owner of such building, dwelling, or motor vehicle. (Prior code § 90703.01)

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 62 - 9-25).

Full Breakdown

County Code § 90703.01 requires audible burglar alarms installed on structures or motor vehicles to be capable of terminating within twenty (20) minutes of activation. Any Imperial County sheriff's deputy may take reasonable steps to disconnect an alarm that keeps sounding. Owners must also prominently display a phone number where they can be reached, so an alarm's noise nuisance can be resolved without extended disruption to neighbors.

Violations & Fines

An alarm that cannot auto-terminate within 20 minutes, or lacks a posted contact number, violates § 90703.01 and can be disconnected on-site by a sheriff's deputy.

Frequently Asked Questions

Who can shut off a vehicle alarm that won't stop?
Any member of the Imperial County sheriff's department may take reasonable steps to disconnect a burglar alarm that continues sounding, under § 90703.01(B).
Do I need to post my phone number on my car alarm?
Yes: the code requires the building, dwelling, or vehicle to prominently display a phone number for reaching the owner.

Sources & Official References

Other rules in Imperial County

All Imperial County rules

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