Sonoma County, CA Ordinances (2026)

Local rules and regulations for Sonoma County, California. Population: 488,863.

Verified from official government sources

Note: County ordinances apply to unincorporated areas of Sonoma County. If you live within an incorporated city, that city's own rules take precedence over county-level regulations. We have city-specific rules for Petaluma, Rohnert Park, Santa Rosa, and Sonoma: check there if you live in one of those cities. All other areas in Sonoma County fall under the county rules shown below.

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Select a topic to see Sonoma County's rules on that subject.

Noise Ordinances

Short-Term Rentals

Fire Regulations

Cities in Sonoma County

These cities are located within Sonoma County and may have their own ordinances.

Pop. 178,127

Pop. 59,776

Pop. 44,575

Pop. 10,739

Unincorporated Communities

These communities are in unincorporated Sonoma County. County ordinances apply directly to these areas.

Larkfield-WikiupPop. 8,492 Boyes Hot SpringsPop. 6,215 GuernevillePop. 4,552 Fetters Hot Springs-Agua CalientePop. 4,233 El VeranoPop. 3,867 ForestvillePop. 3,264 Sonoma State UniversityPop. 2,679 PenngrovePop. 2,637

Data Sources

Ordinance data for Sonoma County is sourced from the following official government references. Click any topic above for detailed citations.

Show all 127 sources

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Sonoma County, CA Ordinances (2026)

Browse Ordinances by Topic

Noise Ordinances

Short-Term Rentals

Fire Regulations

Cities in Sonoma County

Unincorporated Communities

Data Sources

Parking Rules

Fence Regulations

Animal Ordinances

Landscaping Rules

Home Business

Swimming Pools & Spas

Accessory Structures

Environmental Rules

Rental Property Rules

Curfew Laws