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Contra Costa County, CA Animal Ordinances: Pet Limits (2026)

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

Key Facts

Code Section
Contra Costa County Ord. Code Ch. 416-6
Threshold without permit
3 dogs and 5 cats over 6 months
Trigger period
Over 30 days in a single dwelling/business unit
Kennel license threshold
More than 20 dogs or 20 cats, or any commercial operation
Zoning scope
Areas zoned for uses other than agriculture
Nighttime confinement
Required for licensed multiple-pet dogs

Summary

Under Chapter 416-6 of the Contra Costa County Animal Ordinance, no household in a non-agricultural zone may keep more than three dogs or more than five cats over six months old for more than 30 days without first obtaining a multiple pet license from the Animal Services Director; commercial-scale keeping requires a kennel license.

City-specific rules exist: Brentwood, and Antioch have their own pet limits rules that differ from Contra Costa County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

No more than three dogs and no more than five cats over six months of age may be kept, harbored, possessed or maintained for more than thirty days in a single dwelling or business unit without a multiple pet license in an area zoned for uses other than agriculture.

Source: Contra Costa County Ordinance Code Chapter 416View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Ordinance Code: Supplement 103).

Full Breakdown

Chapter 416-6 (Individual Licenses) of Division 416 of the County Ordinance Code governs pet limits. In unincorporated areas zoned for uses other than agriculture, the ordinance limits a single dwelling or business unit to three dogs and five cats over six months of age before a multiple pet license is required. A separate kennel license is required for more than twenty dogs or twenty cats, or for any commercial dog or cat operation. Applications must list every dog included, include current rabies certificates from an authorized veterinarian, and must show the animals are not subjected to neglect, cruelty, or abuse and that the applicant has not had a license revoked or been convicted of an animal-law violation within one year.

All dogs maintained under a multiple pet license must be confined on the premises and enclosed in a secure shelter during hours of darkness, except when shown, exercised, hunted, worked, or trained under owner control. 002 for any dog over four months in unincorporated Contra Costa County.

Violations & Fines

Keeping more than the permitted number of dogs or cats without a multiple pet license is a violation of the Animal Ordinance enforced by Animal Services. Penalties include citations, license fees, animal impoundment under Chapter 416-8, and impound/boarding charges ($65 impound, $25/day boarding). The Animal Services Director may revoke a multiple pet license for noncompliance.

Frequently Asked Questions

How many dogs can I have in my home in unincorporated Contra Costa County?
Up to three dogs and five cats over six months of age without any special license. Above that, you must apply to Animal Services for a multiple pet license under Chapter 416-6.
Do agricultural properties have the same limits?
No. The 3-dog/5-cat threshold applies in areas zoned for uses other than agriculture. Agriculturally zoned parcels are not subject to that cap, though kennel licensing still applies at higher numbers.
What do I need to apply for a multiple pet license?
A written application to the Animal Services Director listing every dog, current rabies certificates for each, the application fee, and a showing that the animals are not at risk of neglect or cruelty and that no licensing or animal-law violation has occurred in the past year.

Sources & Official References

Other rules in Contra Costa County

All Contra Costa County rules

California rules heatmap·Compare Contra Costa County to another location·View the California animal ordinances overview

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