Mendocino County, CA Short-Term Rentals: Noise Rules (2026)
Key Facts
- Coastal/Town standard
- May not exceed General Plan Tables 3-J (exterior) and 3-L (interior)
- Code section
- Sec. 20.748.020(H) (Noise Limitations)
- Stand-alone noise ordinance
- County has none; flagged as enforcement gap (2026)
- Inland (proposed)
- Good Neighbor Policy + complaint-based enforcement
- Enforcement model
- Proposed 3 verified violations in 12 months
Summary
Coastal and Town vacation rentals must not create noise exceeding the County General Plan's exterior and interior noise standards (Tables 3-J and 3-L). Mendocino County lacks a stand-alone numeric noise ordinance, so the proposed inland rules rely on a Good Neighbor Policy and complaint-based enforcement instead.
Vacation Home Rental and/or Single Unit Rental uses shall not create noise impacts to surrounding properties and uses that exceed noise standards set out in the County's General Plan Development Element, Table 3-J, Exterior Noise Level Standards (Levels not to be Exceeded More than 30 Minutes in an Hour) and Table 3-L, Maximum Acceptable Interior Noise Levels Created by Exterior Noise Sources.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 75).
Full Breakdown
' These General Plan tables, rather than a separate decibel ordinance, define the ceiling. Notably, Mendocino County does not have a stand-alone numeric noise ordinance for general enforcement, which county staff and supervisors flagged as a gap when discussing the inland STR ordinance in February 2026. As a result, the draft inland approach relies on a Good Neighbor Policy requiring operators to give guests and neighbors information about noise, trash, parking, pets, emergency contacts, behavioral expectations, and how to file complaints, paired with a three-strike enforcement model (three verified violations within 12 months).
Operators should set clear quiet-hours house rules and provide a local contact so complaints can be resolved quickly, since persistent noise complaints can lead to enforcement and license problems.
Violations & Fines
Noise exceeding General Plan Tables 3-J/3-L, or repeated verified complaints, can lead to code enforcement and, under the proposed three-strike model, escalating action against the rental.
Frequently Asked Questions
What noise limit applies to Mendocino County vacation rentals?
Does the County have a general noise ordinance?
Sources & Official References
Other rules in Mendocino County
California rules heatmap·Compare Mendocino County to another location·View the California short-term rentals overview
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