Blog · October 14, 2026 · California
Corte Madera Zoning Map, California: what to check
Zoning decides what can be built where, and the answer for a lot near Mill Valley starts with the right map.
Main page: Marin County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy a lot near San Rafael with a plan in mind, check the Corte Madera zoning map early: a district label can make or break the plan. In this town guide: which office sets the rules for a lot, how to match a parcel to its district, and when a variance or rezoning comes up, especially near San Rafael.
Which office controls the Corte Madera zoning map
Within municipal limits, the town or city normally writes the zoning code, which means a parcel in Corte Madera follows that code. Outside those limits, near Belvedere or Mill Valley, county rules apply where they exist; confirm with the county office. A fast way to settle it: ask whether the parcel near San Rafael is inside the boundary.
The viewer Marin County publishes
Begin with the Marin County parcel viewer; it maps every assessed parcel in the county, Ross included. For a parcel near Tiburon, type a street address, an owner's name or a parcel number, and the matching parcel lights up. For property near Belvedere, the record panel normally shows the owner of record, acreage on the tax roll, the parcel number and often a sale date.
Limits of the parcel data
The acreage figure is an estimate; only a licensed surveyor sets the real boundary on land around Ross. Records update in batches, so a fresh transfer around Mill Valley might lag behind.
Where Corte Madera fits in
The town sits in Marin County, California, so its parcels are on the county's map, especially near Larkspur. With a lot near Larkspur, city or town hall handles things like zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Acreage past the city limits out by Belvedere generally falls under county rules, not municipal ones.
A quick look at the area
San Rafael holds the county offices, home to the main records offices. You'll also find Larkspur, Mill Valley, and Ross. About 254,407 people call Marin County home (Census Bureau estimate, 2023) spread over about 520 square miles. Landmarks such as San Pablo Bay, San Francisco Bay, and Golden Gate National Recreation Area are easy to spot when you zoom out from Belvedere.
Reading the district label
Some planning offices post the Corte Madera zoning map as a PDF; if you can't find it, ask staff for the district by parcel number. With a lot near Belvedere, district codes like R-1, C-2 or A-1 aren't self-explanatory, so read the ordinance chapter for each; the letters vary from place to place.
Legal descriptions in California
California is laid out under the Public Land Survey System, so deeds around Belvedere reference sections and townships. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Ross odd-sized. Copy the legal description from the record for the parcel near Tiburon before you request a deed or survey.
Reading the ordinance
For a home near Tiburon, the ordinance spells out uses allowed by right, uses needing a permit, and uses not allowed. For a home near Belvedere, overlay districts, such as floodplain, historic or airport zones, can add rules on top of the base district.
Asking for an exception
If your plan near Larkspur doesn't fit the district, the usual routes are a variance, a special use permit or a rezoning.
Deeds, plats and who keeps them
Before you sign anything, request the recorded deed from the County Recorder; the parcel map near Tiburon only summarizes it. Long-held tracts near Mill Valley can sit on a long string of deeds, so a title company can sort it out on a real sale.
Calling planning staff
When you call about land near Tiburon, give the parcel number and your intended use; staff can point to the right section of the ordinance. Also ask whether the lot near San Rafael is a legal lot of record, since some older splits don't.
Building permits and inspections
Even when zoning allows a use near Belvedere, you still need building permits and inspections; septic or sewer and driveway access are often reviewed too.
Neighboring parcel maps
Marin County meets Contra Costa County, San Francisco County, Solano County, and Sonoma County, all with their own assessor records. A tract near the line by Tiburon may show up in two county records, so look at the neighboring map before you assume the acreage. For land near Larkspur, the Platbookmapper state page lists each bordering county map for California.
Questions about the Corte Madera zoning map
Where is the town zoning map near Larkspur?
It depends, but the planning office covering Corte Madera can give the district if you send the parcel ID.
Can I see zoning on the parcel viewer for Corte Madera?
Some viewers include a zoning layer; confirm any layer with planning staff in Corte Madera.
How do variances work near San Rafael?
In most cases, boards in Corte Madera grant variances only when strict rules cause a real hardship; ask staff about the standards.
Does the county zone rural land near Mill Valley?
For most people, land beyond Corte Madera limits usually follows county rules, if any; confirm with the county office.
What's the tax parcel number used for in Corte Madera?
It's the number the County Assessor uses to track a tract near Tiburon; you'll see it in the viewer and on tax statements.
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.