Blog · October 14, 2026 · California
Using the San Rafael GIS Map
Most property questions near San Anselmo start with a parcel lookup.
Main page: Marin County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For a parcel in or near San Rafael, the San Rafael GIS map lays out lines, owner names and parcel numbers. Covered here for San Rafael: which viewer to open, how to search it, and what to double-check with records.
The official viewer behind the San Rafael GIS map
For a parcel near Tiburon, some cities also run their own GIS portal for utilities or zoning; that can add detail on top of the county map.
Where the parcel data lives
Your first stop is the Marin County parcel viewer; it includes each assessed parcel from Ross to San Anselmo. When a rural tract has no street number, pan along US Route 101 and select the outline. On ground around San Anselmo, the record panel usually lists the owner of record, assessed acreage, a parcel ID and in many cases the last transfer.
Taking the map into the field
Most viewers work in a phone browser, handy when you're parked on a road near Ross, but coverage can be spotty out of town. A screenshot of the parcel near San Anselmo with its ID helps when you meet an owner or agent.
Land on the county line
Marin County touches Contra Costa County, San Francisco County, Solano County, and Sonoma County, and each of those keeps its own parcel map. Acreage along the edge near San Anselmo can show up in two county records, so open the adjacent map too. Closer to Ross, the Platbookmapper state page links every neighboring county map for California.
San Rafael and the county around it
San Rafael lies within Marin County, California, so its parcels are on the county's map. As the county seat, San Rafael hosts the courthouse, which puts the County Recorder close by. For a parcel near Ross, city or town hall handles things like zoning, permits and utilities within town limits, but the county runs assessment and recording. Lots just outside the town limits near Ross usually answers to county rules rather than the town's.
Reading the legal description
California uses the Public Land Survey System, so rural legal descriptions near Ross cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near San Anselmo vary in size. Write down the legal description for the tract near Corte Madera before you request a deed or survey.
Getting your bearings
San Rafael is the county seat, home to the main records offices. You'll also find Larkspur, Ross, Corte Madera, and San Anselmo. Around 254,407 people call Marin County home (Census estimate, 2023) on about 520 square miles. Places such as San Pablo Bay, San Francisco Bay, and Golden Gate National Recreation Area make handy reference points on the map near Corte Madera.
Backing up the map with records
When the details count, request the recorded deed from the County Recorder; the parcel map near Corte Madera only summarizes it. Older tracts near Tiburon can go back through many deeds, so a title company earns its fee on a real sale.
Browser tips
If the viewer stalls on a phone near Tiburon, try a desktop browser or clear the cache; links occasionally change, and our directory page keeps the current one.
Limits of the parcel data
Parcel lines are drawn for taxes, not surveyed, so the edge of a yard near Ross often sits some distance off the line on screen. Closer to Tiburon, records update in batches, so a deed recorded last month can take weeks to appear.
Which office to call
Questions about value or the owner field for land near San Anselmo go to the County Assessor, which maintains the tax roll. Zoning, permits and septic questions near Ross need the planning or permitting office, and the answer depends on jurisdiction.
Three ways to find a parcel
For a house in San Rafael, search the street address; owner names are usually entered last name first. For property near Larkspur, searching by parcel number never misses, and it carries over to every office in the county.
What the layers show
An aerial view around Larkspur shows roofs, driveways and tree lines next to the parcel edges.
Saving what you find
Print or screenshot the parcel near San Anselmo with its ID visible, so you have it when calling an office.
Owner, value and acreage
Recent sales on nearby lots near San Anselmo give a rough idea of values; an appraiser is the real authority.
San Rafael: common questions
Do I need an account for the parcel map near Tiburon?
There's no fee to use the parcel viewer near Tiburon, though printing may be limited.
Can I see aerial photos on the map near Corte Madera?
For acreage around Corte Madera, many viewers offer aerial imagery plus layers like city limits, zoning or flood zones; open the layer list to see what's there.
Where else can I find maps of San Rafael?
For most people, San Rafael may publish zoning or utility maps separately.
How accurate is the parcel map near Tiburon?
Good question; the map near Tiburon isn't a survey; get a survey before a fence.
Which office handles records for land near Ross?
For land near Ross, assessment goes to the County Assessor and deeds to the County Recorder, while zoning questions go to planning
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.