Blog · October 14, 2026 · California
Using the Corte Madera GIS Map
Parcel data for Corte Madera comes from the county, and the viewer is free.
Main page: Marin County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When land near Ross catches your eye, a look at the Corte Madera GIS map gives you lines, owner names and parcel numbers. Covered here for Corte Madera: where that map lives, the fastest ways to search, and the limits worth knowing.
Where the Corte Madera GIS map lives
If you're looking near Mill Valley, 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
Begin with the Marin County parcel viewer; it covers each tax parcel around Ross and Belvedere. If you only know roughly where the land is, pan along US Route 101 and click the parcel itself. For a tract near Mill Valley, the record panel normally shows the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
Who handles what
If the acreage or value on a parcel near Tiburon looks off are handled by the County Assessor, the office behind the parcel record. Questions about what you can build around Belvedere are for the local planning and health departments, town or county, depending on location.
Corte Madera, CA: the basics
Corte Madera sits in Marin County, California, and the county assessor maps its lots. With a lot near Larkspur, the municipality handles things like zoning, permits and utilities within town limits, and the county still keeps the parcel and deed records. Land beyond the city limits out by Belvedere generally answers to county rules, not municipal ones.
Three ways to find a parcel
By address works best for lots in Corte Madera; owner search often wants the surname first. On ground around San Rafael, searching by parcel number never misses, and it carries over to every office in the county.
Layers worth turning on
An aerial view around Belvedere helps you see where buildings sit inside the lines.
On site with the map
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Belvedere, so load it before you lose signal. A printout of the tract near Ross helps when you meet an owner or agent.
When a parcel crosses a boundary
Marin County meets Contra Costa County, San Francisco County, Solano County, and Sonoma County; every one of them runs a separate parcel map. Acreage along the edge near San Rafael may show up in two county records, so open the neighboring map as well. For a home near Tiburon, our state page links every bordering county map across California.
Keeping a record
Print or screenshot the parcel near Belvedere with its ID visible, so you have it when calling an office.
A quick look at the area
San Rafael serves as the county seat, where most land records are kept. Smaller places on the map include Larkspur, Mill Valley, and Ross, where town lots give way to larger tracts. Roughly 254,407 people call Marin County home (Census Bureau estimate, 2023) across about 520 square miles. Places such as San Pablo Bay, San Francisco Bay, and Golden Gate National Recreation Area help you orient on the aerial around Ross.
Recorded documents worth pulling
For anything that matters, get the recorded deed through the County Recorder; the parcel map near Mill Valley only summarizes it. If the land is near Ross, have ready the document number shown in the record panel to skip a name search.
Browser tips
If the viewer stalls on a phone near Tiburon, switch browsers or turn off pop-up blockers; links occasionally change, and our directory page keeps the current one.
What the map can't tell you
Listed acreage is a tax-roll number; only a licensed surveyor sets the real corners on land around Mill Valley. Records update in batches, so a recent sale near Larkspur can take weeks to appear.
Sections, lots and bearings
California is laid out under the Public Land Survey System, so deeds around Mill Valley reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though corrections make some sections near Mill Valley odd-sized. Copy the legal description from the record for the parcel near Mill Valley before you request a deed or survey.
Reading a parcel record
If sale dates appear, they help gauge the market in the town give a rough idea of values; an appraiser is the real authority for land near Larkspur.
Corte Madera: common questions
What layers does the parcel viewer have for land near San Rafael?
For land near San Rafael, layer lists vary from one viewer to the next; open the layer list to see what's there.
Are parcel lines on the map exact in Corte Madera?
Lines near Belvedere can be off by several feet or more, so a licensed surveyor should mark corners.
Is the Corte Madera GIS map free?
For most people, there's no fee to use the parcel viewer near Larkspur; some sites ask you to accept a disclaimer.
Does Corte Madera have its own GIS map?
For most people, check the Corte Madera website or ask city hall; the county viewer remains the main parcel source.
Can I download parcel lines near Ross?
Most viewers have a print or export tool; include the record panel for the lot near San Rafael.
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.