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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 · Napa

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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

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

County government · Napa

Planning, Building & Environmental Services

Planning & Zoning

Napa Planning applications and submittal documentsOfficial instructions

Planning’s document directory includes use permits, modifications, parcel/subdivision maps and other project resources. Staff can help identify the correct application; no fee amount or PDF contents are inferred.

Service area: County Planning application information. Confirm jurisdiction for the property and project; incorporated-city authority is not established by this entry. Area details & sources

Source checked October 26, 2026

Napa County · Napa County planning application instructions and forms (opens in a new tab)

Planning Documents | Napa County, CA — service-planning-application-06055

The Planning Division has a number of applications, submittal forms and informational documents to help you with your planning and development needs. If you can’t find what you’re looking for using the links below, or are not sure exactly what you need, the Planning Division staff is available to help. If you have questions about land use, zoning, allowed uses or permitting, use the informational links provided, or contact us for assistance.

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Planning and development applications in California

Planning, Building & Environmental Services

Planning and development applications by county