Jurisdiction
Confirm incorporated city or town versus unincorporated Marin before using a zoning tool.
Marin County · Property research
Marin County property research.
Begin by identifying whether a Marin address is incorporated or unincorporated. The County zoning lookup applies only to unincorporated parcels; cities and towns maintain their own zoning, permit and design-review rules.
Due diligence
What to check, and in what order.
Parcel rules
Check zoning, Countywide Plan designation, density, setbacks, height, floor-area rules and coastal status.
Hazards + access
Review wildfire, flood, sea-level rise, landslide, earthquake, tsunami, road and emergency-access information.
Ownership costs
Investigate insurance, parcel taxes, utilities, private roads, drainage, vegetation and project permitting.
Official tools
Where the records live.
Marin County zoning and property lookup
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)Marin planning hub
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)Marin natural-hazard maps
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)Marin ADU guidance
Use this source for current parcel, planning or hazard context, then confirm material conclusions with the responsible agency.
Open source (opens in a new tab)Owning here
Budget for the systems, not just the house.
Insurance, utilities, drainage, vegetation, access, maintenance and taxes all change what a property costs to own. Worth identifying early rather than after closing.
Online maps are screening tools. They are not surveys, title reports, permit approvals, engineering opinions or insurance commitments.
Related library
Continue with the property questions.
Get in touch
Own property in Marin County?
Area context only goes so far. The particulars of one property are a conversation, and a free custom valuation is a practical place to start it.