Blog · October 14, 2026 · California
The Orinda GIS Map and the county parcel viewer
Parcel data for Orinda comes from the county, and the viewer is free.
Main page: Contra Costa County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For a parcel in or near Orinda, a look at the Orinda GIS map gives you parcel boundaries plus basic tax data. What this Orinda guide covers: where that map lives, how to search it, and what to double-check with records.
Opening the Orinda GIS map
For a parcel near Martinez, 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
Property in and around Moraga are published on the Contra Costa County parcel viewer, a viewer that needs no account. For land near Pleasant Hill, enter a street address, an owner's name or a parcel number, and the viewer zooms to the match. In and around El Cerrito, the parcel card usually lists the owner of record, assessed acreage, a parcel ID and sometimes recent sales.
Orinda and the county around it
Orinda sits in Contra Costa County, California, which means parcel data comes from the county. If you're looking near El Cerrito, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Acreage past the town limits near El Cerrito generally falls under county rules, not municipal ones.
Deeds, plats and who keeps them
The map is an index, not the title: recorded deeds, plats and easements covering ground around Martinez sit with the County Recorder. Inherited tracts near Lafayette can go back through several deeds, and a title company is worth hiring on a real sale.
Places you'll see on the map
Martinez is the county seat, home to the main records offices. You'll also find Lafayette, Moraga, Pleasant Hill, and Walnut Creek. Roughly 1,155,025 people call Contra Costa County home (Census Bureau estimate, 2023) on about 717 square miles. Landmarks such as Clayton-Marsh Creek-Greenville Fault, San Pablo Dam Reservoir, and Mount Diablo State Park help you orient on the aerial around Moraga.
Troubleshooting the viewer
When the map won't open around Moraga, try a desktop browser or clear the cache; links occasionally change, and our directory page keeps the current one.
On site with the map
Most viewers work in a phone browser, which helps when you're standing on land near El Cerrito, but coverage can be spotty out of town. A saved image of the lot near El Cerrito and its lines helps when you meet an owner or agent.
Land on the county line
Contra Costa County borders Alameda County, Marin County, Sacramento County, San Francisco County, and San Joaquin County, and each of those keeps its own parcel map. Ground near El Cerrito that runs to the line may show up across two assessors' files, so look at the adjacent map too. For land near El Cerrito, the Platbookmapper state page lists each bordering county map for California.
Searching the map
Vacant ground near Martinez may lack an address, so zoom in from Interstate 580 and click the outline. Out toward El Cerrito, searching by parcel number never misses, and it carries over to every office in the county.
What the layers show
An aerial view around Pleasant Hill helps you see where buildings sit inside the lines.
What the map can't tell you
Listed acreage is an estimate; only a licensed surveyor can set the real corners for a parcel near Moraga. On ground around Martinez, records update in batches, so a deed recorded last month can take weeks to appear.
Which office to call
For assessment questions about property around Pleasant Hill belong with the County Assessor, the office behind the parcel record. Zoning, permits and septic questions near Lafayette are for the local planning and health departments, depending on whether the land is inside town limits.
Sections, lots and bearings
California follows the Public Land Survey System, so deeds around Pleasant Hill reference sections and townships. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though corrections make some sections near Moraga odd-sized. Copy the legal description from the record for the parcel near Pleasant Hill before you request a deed or survey.
Saving what you find
Save a screenshot of the lot near Martinez and its record panel, so you have it when calling an office.
What the record panel tells you
If sale dates appear, they help gauge the market around Pleasant Hill are a useful starting point; they're not an appraisal.
Questions about the Orinda GIS map
How current is the parcel data around Walnut Creek?
For property near Moraga, updates come in batches.
Does the map show city limits for Orinda?
Around Martinez, many viewers offer aerial imagery plus layers like city limits, zoning or flood zones; open the layer list to see what's there.
Is there a separate city GIS for Orinda?
Check the Orinda website or ask city hall.
Are parcel lines on the map exact near Martinez?
It depends, but the map near Moraga isn't a survey.
How is land described in California deeds around Moraga?
With a lot near El Cerrito, deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Contra Costa 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.