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Marin County, CA Animal Ordinances: Breed Restrictions (2026)

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

Key Facts

County Code
Marin County Code § 8.04.181
State Preemption
Cal. Food & Ag. Code § 31683 (no breed bans)
State Hearing Authority
Cal. Food & Ag. Code § 31621
Annual Fee Authority
Cal. Food & Ag. Code § 31641
Removal from List
36 months without further Title 8 violations
Breed-Specific Spay/Neuter
Permitted by state law; not currently adopted by Marin

Summary

Marin County has no breed-specific ban. California Food and Agricultural Code § 31683 preempts local breed-based bans, although mandatory spay/neuter ordinances by breed are permitted. The County instead regulates individual dogs through its Potentially Dangerous and Vicious Dog ordinance, § 8.04.181.

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

The owner/guardian of a dog found potentially dangerous under this section, who has no additional violations of any of the provisions of Title 8 of the Marin County Code... within a 36-month period from the date of designation as potentially dangerous, shall be removed from the list of potentially dangerous dogs by the Director.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 2026 Update 1).

Full Breakdown

California Food and Agricultural Code § 31683 prohibits cities and counties from adopting breed-specific legislation that declares a particular dog breed dangerous or vicious; only spay/neuter and breeding requirements may be breed-specific. Marin County does not maintain a breed-specific ban. Instead, Marin County Code § 8.04.181 (Potentially Dangerous and Vicious Dogs) implements California Food and Ag Code §§ 31601-31683 by allowing the County Administrator or designee to declare an individual dog 'potentially dangerous' or 'vicious' after notice and a hearing under FAC § 31621. Owners of a dog declared potentially dangerous must pay an annual fee in addition to the regular license fee (per FAC § 31641) and comply with confinement and identification requirements. A dog may be removed from the potentially dangerous list after 36 months with no further Title 8 violations.

Violations & Fines

Failure to comply with a potentially dangerous or vicious dog designation (e.g., confinement, signage, license fee, microchipping) is a misdemeanor under state law and may result in impoundment or, for a 'vicious' designation, destruction of the dog under FAC § 31645.

Frequently Asked Questions

Are pit bulls or any breeds banned in unincorporated Marin County?
No. California Food and Ag. Code § 31683 preempts breed-specific bans. Marin County regulates dangerous dogs on an individual basis under § 8.04.181 regardless of breed.
What is a 'potentially dangerous' dog?
Under Cal. FAC § 31602 (applied by County Code § 8.04.181), it is a dog that, when unprovoked, has engaged in specified threatening or biting behavior. A formal designation requires written notice and a hearing.
How do I get my dog off the dangerous-dog list?
Per § 8.04.181, the owner may have the dog removed from the potentially dangerous list after 36 months with no additional Title 8 (or analogous Mill Valley Ch. 6.04) violations.
Does the County charge extra to license a potentially dangerous dog?
Yes. In addition to the regular license fee, the owner must pay an annual fee set by the Board of Supervisors to cover the cost of maintaining records, as authorized by Cal. FAC § 31641.

Sources & Official References

Other rules in Marin County

All Marin County rules

How Marin County compares: Cities with No Dog Breed Restrictions·California rules heatmap·Compare Marin County to another location·View the California animal ordinances overview

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