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Planning and development applications in California

Planning and development applications.

In California, 58 county departments and 1 city government publish 61 official links for this service. Reviewed requirements cover availability notices (28), documents (17), processing time (4) and appointments (1). 42 counties have a page for it below.

Before you start · 2 things to check

Start with the jurisdiction of the property. County permit offices may serve only unincorporated areas.
Use the official map and confirm project requirements with the planning or building office.

1 guide with reviewed service links · Sonoma

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Highlighted counties have a reviewed service guide matching this selection. An agency may serve only a city or part of a county.

California58 counties

County directory Reviewed service guides available

Map for browsing; agency service areas may differ.

Map source

U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

County government · Sonoma

Permit Sonoma

Planning & Zoning

Permit Sonoma application instructions, forms and submittal requirementsOfficial instructions

The actual application-document directory explains its purpose and links submittal requirements by project/permit type. Select the planning/land-use material for your project; this supplement does not verify every form or a complete online transaction.

Source checked October 26, 2026

Permit Sonoma permit instructions forms and guidelines · Permit Sonoma permit instructions forms and guidelines (opens in a new tab)

Permit Sonoma application instructions, forms and submittal requirements

Documents that explain the process for applying for various permits and the forms necessary to apply for them.

Saved evidence: fe37f8abff662dd3 · Agent source review

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Planning and development applications in California

Permit Sonoma

Planning and development applications by county