Blog · October 14, 2026 · California
Tiburon Flood Zone Map, California: a practical guide
The zone on FEMA's map affects insurance, building and resale near San Rafael.
Main page: Marin County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near San Rafael, pull up the Tiburon flood zone map: FEMA's zone label affects insurance, building rules and resale. This Tiburon guide covers: finding the address on FEMA's map, reading the zone codes, and pairing it with the Marin County parcel viewer.
Checking the Tiburon flood zone map step by step
The official source is FEMA's Flood Map Service Center: type an address near Larkspur, then open the map view for that panel. A tract near Mill Valley without an address is still easy to locate: pan from the closest town and click the spot.
The free map to start with
Begin with the Marin County parcel viewer; it includes every assessed parcel in the county, Belvedere included. With a lot near San Rafael, put in a street address, an owner's name or a parcel number, and the matching parcel lights up. In and around San Rafael, the record panel typically gives the owner of record, acreage on the tax roll, a parcel ID and sometimes recent sales.
Neighboring parcel maps
Marin County borders Contra Costa County, San Francisco County, Solano County, and Sonoma County; every one of them runs a separate parcel map. Ground near Larkspur that runs to the line may show up across two assessors' files, so look at the adjacent map before you assume the acreage. For a tract near Sausalito, our state page lists every neighboring county map for California.
Getting your bearings
San Rafael holds the county offices, home to the main records offices. You'll also find Belvedere, Sausalito, Corte Madera, and Mill Valley, each with its own cluster of lots. Roughly 254,407 people call Marin County home (Census Bureau estimate, 2023) spread over roughly 520 square miles. Features like San Pablo Bay, San Francisco Bay, and Golden Gate National Recreation Area make handy reference points on the map near Belvedere.
Field tips
The parcel map usually runs in a mobile browser, useful out on a road near Sausalito, so load it before you lose signal. A printout of the tract near Sausalito keeps working without signal.
City limits and county records
Tiburon sits in Marin County, California, and the county assessor maps its lots. With a lot near Belvedere, the municipality handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Lots just outside the town limits out by San Rafael generally answers to county rules instead.
Legal descriptions in California
California is laid out under the Public Land Survey System, so rural legal descriptions near Larkspur cite section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though sections near Sausalito can be irregular. Write down the legal description for the tract near Mill Valley for any title or survey request.
A short flood checklist
Request about past flood claims on the property near Corte Madera; an insurance quote early avoids surprises.
Reading A, AE and X
Closer to Sausalito, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. In and around Corte Madera, a low-risk label isn't a guarantee: FEMA notes that floods happen outside mapped zones too.
Lining it up with the parcel map
When the zone clips a corner of a lot near Mill Valley, the location of the house or building pad decides a lot.
Insurance, lenders and building
Out toward Sausalito, an Elevation Certificate from a surveyor helps: it compares the building to the BFE. Building or adding on near Sausalito in a mapped zone can trigger elevation rules; ask the local floodplain administrator early.
Getting answers from the right desk
Questions about value or the owner field for land near Sausalito are handled by the County Assessor, the office behind the parcel record. Questions about what you can build around San Rafael are for the local planning and health departments, depending on whether the land is inside town limits.
Beyond the mapped zones
Low-lying fields near San Rafael aren't always studied in detail, so look for water marks and debris lines. Marshy spots near Corte Madera can limit building too; check the National Wetlands Inventory mapper for a first look.
Quick answers
Is flood insurance mandatory near San Rafael?
Generally, lenders generally require it for buildings near Sausalito in a Special Flood Hazard Area when the loan is federally regulated or insured; elsewhere it's optional.
Is there a flood layer on the parcel viewer near Mill Valley?
For most people, a flood layer may appear in the Marin County parcel viewer layer list, but FEMA's own map is the official source.
How do I check the flood zone for an address in Tiburon?
Short answer: search the address near Sausalito on FEMA's Flood Map Service Center, and the zone code appears on the map.
What does an AE label mean for a lot near San Rafael?
AE is a Special Flood Hazard Area with a published base flood elevation, which shapes building rules near San Rafael.
How is land described in California deeds around San Rafael?
With a lot near Sausalito, deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Marin County, CA parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.