Very High Fire Hazard Severity Zone behind Highway 1
The hillside parcels above the village, all of the Village Hilltop, and most of the Panoramic Highway corridor sit inside Cal Fire's Very High Fire Hazard Severity Zone. Defensible space, ember-resistant venting, and Class A roofing are no longer optional. Your insurance carrier will ask. Your offer should price in the upgrades.
Insurance reality: FAIR Plan plus wrap is the norm
Standard carriers decline roughly 50 to 70 percent of Stinson Beach applications, depending on the year and the parcel. The working solution for most buyers is the California FAIR Plan for the dwelling, plus a "wrap" or "DIC" (difference-in-conditions) policy for liability and the perils FAIR does not cover. For a $2M home, total annual premium typically lands in the $6,000 to $15,000+ band. Get a binding quote on the specific property before you remove the inspection contingency.
Coastal Commission jurisdiction is everywhere
Stinson sits inside the Coastal Zone. Any meaningful exterior remodel, septic replacement, deck rebuild, or vegetation removal touches Coastal Commission review and Marin County Coastal Permit process. Plan on 6 to 18 months of permitting for anything beyond cosmetic interior work. Pre-approved plans add real value at resale.
Tsunami zone: the Patios and most of Seadrift
Both beach-front sub-markets sit inside the mapped tsunami inundation zone. The village has a clear evacuation route up the hill on Highway 1, and the local fire department runs the siren tests. Flood insurance through the NFIP is required for most parcels with a mortgage; rates depend on the elevation certificate.
Sea-level rise on the long horizon
State and county sea-level rise projections show meaningful exposure on the Patios sandbar and along the lagoon edge of Seadrift over a 30-to-50 year horizon. None of this is tomorrow's problem, but it is the right context for a multi-decade hold. Marin County has done detailed mapping; review the parcel-specific projection before you write.