Blog · October 14, 2026 · California
San Bruno GIS Map: looking up parcels
Parcel data for San Bruno comes from the county, and the viewer is free.
Main page: San Mateo County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For any lot around Colma, the San Bruno GIS map shows the outline, the owner of record and a parcel ID. Covered here for San Bruno: where that map lives, the fastest ways to search, and what to double-check with records.
The official viewer behind the San Bruno GIS map
For a tract near Millbrae, some cities also run their own GIS portal for utilities or zoning; that can add detail on top of the county map.
Getting to the right map
Your first stop is the San Mateo County parcel viewer; it covers every tax parcel around Burlingame and Brisbane. In and around Brisbane, type a street address, an owner's name or a parcel number, and the matching parcel lights up. For a home near Burlingame, save the parcel ID from that panel; every clerk in the county asks for it first.
What the map can't tell you
Acreage on the record is a tax-roll number; just a licensed surveyor can set the real boundary on land around Millbrae. For property near Colma, records update in batches, so a deed recorded last month might lag behind.
San Bruno and the county around it
San Bruno lies within San Mateo County, California, so its parcels are on the county's map. For a home near Burlingame, City or town hall handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Acreage past the city limits toward Millbrae generally answers to county rules instead.
Field tips
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Pacifica, though signal can drop in rural spots. A saved image of the lot near South San Francisco and its lines is a good backup.
Keeping a record
Save a screenshot of the lot near South San Francisco and its record panel, which helps later when you ask the assessor or a title company.
Offices that can help
For assessment questions about property around Millbrae are handled by the County Assessor, which maintains the tax roll. Building or septic questions for a lot near Brisbane go to planning, building or health offices, depending on whether the land is inside town limits.
Search tips
Acreage around Burlingame might not have a street number, so pan the aerial and click the lot. If you're looking near Millbrae, searching by parcel number never misses, and you'll find it on tax statements.
Browser tips
When the map won't open around Brisbane, try a desktop browser or clear the cache; the Platbookmapper county page tracks the current link.
When a parcel crosses a boundary
San Mateo County touches Alameda County, San Francisco County, Santa Clara County, and Santa Cruz County, and each of those keeps its own parcel map. Ground near Colma that runs to the line can be split across two assessors' files, so look at the adjacent map too. On ground around South San Francisco, the Platbookmapper state page links every bordering county map across California.
Getting your bearings
Redwood City serves as the county seat, where most land records are kept. You'll also find Millbrae, Pacifica, South San Francisco, and Colma. Around 726,353 people live in San Mateo County (Census estimate, 2023) across some 449 square miles. Features like Don Edwards San Francisco Bay National Wildlife Refuge help you orient on the aerial around Pacifica.
Where the recorded documents are
For anything that matters, get the recorded deed from the County Recorder; the parcel map near Colma only summarizes it. Older tracts around Brisbane may go back through a long string of deeds, and a title company can sort it out if money is changing hands.
Layers worth turning on
Switch to the aerial basemap over San Bruno to compare lines with fences and driveways.
How land is described here
California is laid out under the Public Land Survey System, so rural legal descriptions near Pacifica cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Brisbane odd-sized. Keep the legal description for land near Colma before you request a deed or survey.
Owner, value and acreage
Recent sales on nearby lots around Brisbane are a useful starting point; they're not an appraisal.
Frequently asked
How current is the parcel data in San Bruno?
Updates come in batches.
Are parcel lines on the map exact around Colma?
Usually, lines near Colma can be off by several feet or more.
Can I see aerial photos on the map near Millbrae?
For acreage around Millbrae, many viewers offer aerial imagery plus layers like city limits, zoning or flood zones.
How do I find who owns a lot near Pacifica?
Short answer: click the lot near South San Francisco to see the owner; try variations if nothing comes up.
Who do I call about a parcel near Burlingame?
For land near Millbrae, assessment goes to the County Assessor and deeds to the County Recorder.
Open the official San Mateo 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.