Official local service finder

Zoning & building permits

Look up a property’s zoning and find the right permit office.

Apply for a building permit Look up zoning maps

Before you start

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 · Marin

Choose a county on the map

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 · Marin

Community Development Agency

Building & Safety

County building permit informationOfficial instructions

Official county building permit guidance. Service boundaries and project requirements must be confirmed with the department.

Source checked October 14, 2026

Marin County · Marin — building permit department (opens in a new tab)

Official page text containing: The Community Development Agency is dedicated to promoting, protecting, and advancing healthy, safe, and equitable commu

ur government Toggle Search Query Home Departments Community Development Agency Community Development Agency What we do The Community Development Agency is dedicated to promoting, protecting, and advancing healthy, safe, and equitable communities. Find the Division you need CDA Highlights Tam Junction Content text Tam Junction Placemaking Study for community and economic vitality. West Marin Visioning Content text The West Marin Visioning initiative is a community-driven effort to define a shared, long-term vision for the future of West Marin. Septic Regulations Update Content text Updating the Count

Saved evidence: 007c1e3006245683 · Agent source review

Online building permit portalOfficial online service

Official department resource. Confirm jurisdiction, eligible project types and the published instructions before using this service.

Source checked October 14, 2026

Marin County · Marin County — How to apply for a building permit (opens in a new tab)

Official page text containing: Online permit portal Apply for all building permits through our online portal.

l review process. Building Permit Submittal Checklist Make a list of documents you need to submit for a building permit Online permit portal Apply for all building permits through our online portal. [External] Submit plans before starting a big job Share your plans with us before you start a big project. Digital plans will speed our review. How does the permit process work? What do I submit? How does this work? What do I get? Self-service permits for properties with septic systems The Environmental Health Services (EHS) division of the Marin County Com

Saved evidence: 290b20e14074f521 · Agent source review

Full guide, contact details & sources →

Selected agencies, with sources checked individually. See all coverage and sources.