Marin County has no data center ordinance, and its unincorporated land is overwhelmingly residential, agricultural, and open space with very little industrial zoning. A data center is not a listed use, so building one would need a Director's use-equivalence finding, a Use Permit, and CEQA review.
Unincorporated Marin is governed by Title 22, the Development Code. Only one district, IP (Industrial, Planned), is set aside for light industrial and manufacturing, and the county has very little IP-zoned land. A data center appears nowhere in the Title 22 land use tables, so it would first need a Community Development Agency Director determination under Section 22.02.020.E that it is equivalent to a listed use such as research and development or warehousing, then a Conditional Use Permit under Chapter 22.48 plus CEQA review. Coastal Zone parcels also need a Coastal Development Permit under Title 20, the Local Coastal Program. These rules cover unincorporated land only; incorporated cities apply their own zoning.
Building a data center on unincorporated Marin land without a Director use determination, a Use Permit, CEQA clearance, or a required Coastal Development Permit halts approval and draws Community Development Agency enforcement until the project is properly permitted.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
San Rafael, CA
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San Rafael, CA
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San Rafael, CA
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San Rafael, CA
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San Rafael, CA
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San Rafael, CA
A building/zoning permit is generally required in San Rafael for fences over 6 feet or masonry/retaining walls; pool barrier fences must meet the California ...
See how San Rafael's data center zoning & siting rules stack up against other locations.
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