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Mendocino County · Building on your lot

Home alarm permits and false alarms in Mendocino County

Mendocino County's own rules on home alarm permits and false alarms, with the code text for every value.

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Each rule below links to the section of the Mendocino County Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Mendocino County's code says

Mendocino County code What Mendocino County's code adds
How long an alarm may sound
  • An audible alarm must shut off after no more than 30 minutes.
    § 8.60.050 · code text
    No person shall install an audible alarm system without a mechanical electronic or other device which will shut off the audible sound of the alarm after a period of not more than thirty (30) minutes.
False alarm fees
  • $150 per false alarm.
    Applies: Second false alarm in a calendar month, or third and later false alarms in a calendar quarter.
    § 8.60.040 · code text
    The amount of those costs billed shall be $150.00 (one hundred fifty-dollars) per false alarm.
Alarm permit
  • Register with the Sheriff at least 24 hours before activating a new alarm system.
    Applies: Unincorporated area of Mendocino County; new alarm systems installed after the effective date.
    § 8.60.030 · code text
    No alarm user shall activate any new alarm system installed after the effective date of this ordinance, in any unincorporated area of Mendocino County, without registering that alarm system with the Sheriff at least 24 hours before the system is activated.
  • Register within 10 days after the Sheriff notifies you of the requirement.
    Applies: Unincorporated area; alarm systems installed before the ordinance that are not registered.
    § 8.60.030 · code text
    Alarm users of alarm systems installed prior to the enactment of this ordinance which are not registered with the Sheriff, shall have ten (10) days in which to register their alarm system after notification of the registration requirement by the Sheriff.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Do I need a permit for a home alarm in Mendocino County?

Mendocino County's code: An audible alarm must shut off after no more than 30 minutes. (§ 8.60.050); $150 per false alarm. (Second false alarm in a calendar month, or third and later false alarms in a calendar quarter.) (§ 8.60.040).

General information, not legal advice.

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