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Chapter 26 — SONOMA COUNTY ZONING REGULATIONS[1]

Sonoma County Zoning Code · 2026-06 edition · updated 2026-07-25 · Sonoma County

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CHAPTER 26 - SONOMA COUNTY ZONING REGULATIONS[[1]]

Footnotes:

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Editor's note— For cross-reference table of the original zoning ordinance section numbers, see the Tables following Ch. 32.

Article 01. - Applicability of Zoning Districts to General Plan Land Use Categories.

Sec. 26-01-010. - Applicability of zoning districts to general plan land use categories.

Land Use Category Base Zoning District* Base Zoning District* Article
Land Intensive Agriculture LIA Land Intensive Agriculture ..... 26-04
Land Extensive Agriculture LEA Land Extensive Agriculture ..... 26-06
Diverse Agriculture DA Diverse Agriculture ..... 26-08
Resources and Rural Development TP Timber Production ..... 26-14
RRD Resources and Rural Development ..... 26-10
Rural Residential RR Rural Residential ..... 26-18
PC Planned Community ..... 26-26
AR Agriculture and Residential ..... 26-16
Urban Residential RR Rural Residential ..... 26-18
R1 Low Density Residential ..... 26-20
R2 Medium Density Residential ..... 26-22
R3 High Density Residential ..... 26-24
PC Planned Community ..... 26-26
General Commercial CO Administrative and Professional Ofce ..... 26-28
C1 Neighborhood Commercial ..... 26-30
C2 Retail Business ..... 26-32
C3 Heavy Commercial ..... 26-34
PC Planned Community ..... 26-26
Limited Commercial and Limited Commercial - Trafc
Sensitive
CO Administrative and Professional Ofce ..... 26-28
C1 Neighborhood Commercial ..... 26-30
PC Planned Community ..... 26-26
AS Agricultural Services ..... 26-40
LC Limited Commercial ..... 26-36
CR Commercial Rural ..... 26-38
Recreation and Visitor Serving Commercial K Recreation and Visitor Serving Commercial ..... 26-42
General Industrial MP Industrial Park ..... 26-44
M1 Limited Urban Industrial ..... 26-46
M2 Heavy Industrial ..... 26-48
Limited Industrial MP Industrial Park ..... 26-44
M1 Limited Urban Industrial ..... 26-46
M3 Limited Rural Industrial ..... 26-50
Public/Quasi Public PF Public Facilities ..... 26-52
  • The Board of Supervisors may apply other zoning districts to a particular land use category on a case by case basis when determined to be appropriate.

(Ord. No. 6140, § II(Exh. B), 1-5-2016)

Article 02. - In General.

Sec. 26-02-010. - Purpose of chapter.

This chapter is adopted to promote and protect the public health, safety, peace, comfort, convenience and general welfare. It is also adopted for the following specified purposes:

(a)

To provide for the orderly and beneficial land use of the county;

(b)

To protect the character and social and economic stability of agricultural, residential, commercial, industrial and other communities within the county;

(c)

To protect the public safety and welfare by regulating the location and uses of all structures and land;

(d)

To protect and conserve the scenic, recreational and natural resource characteristics of the county;

(Ord. No. 2392, § 4)

(e)

To provide for the orderly and timely processing of development projects as anticipated by the California Permit Streamlining Act. Development projects do not include rezonings, plan amendments or other applications accompanied by a request for a rezoning or plan amendment.

(Ord. No. 4643, 1993.)

Sec. 26-02-020. - Composition of zoning ordinance.

(a)

The zoning ordinance establishes various districts within the unincorporated territory of the county and designates lawful permitted uses, and uses which may be approved through the use permit process. Within these districts (1) it is unlawful to erect, construct, alter or maintain certain buildings or to carry on certain trades or occupations or to conduct certain uses of land or buildings, (2) the height and bulk of future buildings shall be limited, and (3) certain open areas shall be required around future buildings. The various districts also consist of appropriate regulations to be enforced in such district, all as set forth in this chapter.

(b)

In conformance with the open space and public safety elements of the general plan, the county of Sonoma declares that the following articles of this chapter constitute its open space zoning pursuant to Government Code Section 65910:

Article 56 F1 Floodway Combining District
Article 58 F2 Floodplain Combining District
Article 78 B Districts
Article 62 SD Scenic Design Combining
District
Article 68 HD Historic Combining District
Article 64 SR Scenic Resource Combining
District
Article 66 BR Biotic Resource Combining
District
Article 70 G Geologic Hazard Combining
District

(Ord. No. 4643, 1993.)

Sec. 26-02-030. - Numerical references and headings.

The planning director or his or her designee, without following the procedures necessary to amend the provisions of this chapter, may periodically renumber or reletter the sections of this chapter so long as no text changes are made.

(Ord. No. 4643, 1993.)

Sec. 26-02-040. - Zoning permits relative to the general, specific, and area plans.

No ministerial or discretionary permit, such as, but not limited to, rezonings, use permits, variances, building or zoning permits for any use in any district, shall be issued if such rezoning or permit is inconsistent with the Sonoma County general plan or any duly adopted specific or area plans, except that:

(a)

Issuance of a permit for an accessory dwelling unit is exempt from general plan density restrictions.

(Ord. No. 6444, § I, 8-22-2023; Ord. No. 4643, 1993.)

Sec. 26-02-045. - Economic stimulus measures.

Notwithstanding any other provision of this code, the following provisions shall control and prevail for a period of one year following the effective date of this section, unless otherwise amended by subsequent action of the Board of Supervisors:

(a)

Time Extensions. All approved land use entitlements that have not expired by the effective date of this section, and are not related to code violations, are hereby automatically extended for a period of one year from the date of expiration of the entitlement, but not to exceed the period of time allowed on an accompanying tentative map. This extension shall be in addition to any other time extensions allowed under the code.

(b)

Vacation Rentals in the LIA. Notwithstanding the fact that vacation rentals are not listed as an allowable use in Article 04, Land Intensive Agricultural Zoning District, of Chapter 26 of the Sonoma County Code, existing and new vacation rentals that are registered with the Sonoma County Auditor and Tax Collectors office to pay Transient Occupancy Tax and have submitted a complete application for a vacation rental permit within two (2) years of the effective date of this ordinance, may be permitted with a zoning permit, which shall expire upon transfer or sale of the property, provided that they comply with all of the following:

(1)

The vacation rental is within a primary residence and not within a second unit, farm family, agricultural employee, or farmworker unit which have restricted covenants; and the property is not under a Land Conservation Act (Williamson Act) contract;

(2)

The vacation rental complies with all operating standards of Section 26-88-120 of the Sonoma County Code;

(3)

No cultural events, special events, weddings or large gatherings are permitted;

(4)

The septic system serving a vacation rental permitted with a zoning permit shall be properly functioning and shall meet Class 3 standards or better, as verified by a registered Civil Engineer or registered Environmental Health Specialist;

(5)

The owner signs and records a Right to Farm Declaration.

(Ord. No. 6063, § II, 4-15-2014; Ord. No. 5941, § I, 5-10-2011; Ord. No. 5929, § II, 4-12-2011)

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