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.
Marin County, CA
Driveway approaches onto county roads in unincorporated Marin County require an encroachment permit from County Public Works and must meet sight-distance, dr...
Marin County, CA
On County roads designated by Board of Supervisors resolution and posted with signs, oversized commercial vehicles (commercial-plated vehicles or combination...
Marin County, CA
Marin County has no county-wide overnight parking ban; on County roads designated by Board of Supervisors resolution and posted with signs, no vehicle may pa...
Marin County, CA
In unincorporated Marin County, it is unlawful to park a vehicle on any street or highway for more than 72 consecutive hours; signed roads carry additional p...
Marin County, CA
Marin County has no general ordinance banning recreational vehicles, trailers, or boats from parking on streets in unincorporated areas; the 72-hour street-p...
Marin County, CA
County zoning permits standard fence materials and, in the agricultural and ranching areas of West Marin, allows agricultural and livestock fencing (includin...
See how Marin County's data center zoning & siting rules stack up against other locations.
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