Blog · October 14, 2026 · California
The Pittsburg GIS Map and the county parcel viewer
Most property questions near Pleasant Hill start with a parcel lookup.
Main page: Contra Costa County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When land near Walnut Creek catches your eye, the Pittsburg GIS map shows parcel boundaries plus basic tax data. Covered here for Pittsburg: which viewer to open, how to search it, and the limits worth knowing.
Opening the Pittsburg GIS map: start here
Parcel maps here are usually run by the county, not the town, and for Pittsburg that means the Contra Costa County parcel viewer.
Opening the official parcel viewer
Lots and tracts near Walnut Creek are published on the Contra Costa County parcel viewer, free to use and open without a login. In and around Concord, put in a street address, an owner's name or a parcel number, then pick the result to center the map on it. Around Concord, a pop-up or side panel typically gives the owner of record, acreage on the tax roll, a parcel ID and sometimes recent sales.
Where Pittsburg fits in
Pittsburg sits in Contra Costa County, California, and the county assessor maps its lots. For a tract near Concord, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, but the county runs assessment and recording. Lots just outside the town limits near Antioch often follows county rules rather than the town's.
Search tips
By address works best for lots in Pittsburg; for owner searches, try last name first. If you're looking near Clayton, searching by parcel number never misses, and it's printed on tax bills.
Saving what you find
Print or screenshot the parcel near Walnut Creek with its ID visible, which helps later when you ask the assessor or a title company.
Neighboring parcel maps
Contra Costa County meets Alameda County, Marin County, Sacramento County, San Francisco County, and San Joaquin County; every one of them runs a separate parcel map. Acreage along the edge near Walnut Creek can be split in two county records, so check the adjacent map before you assume the acreage. Out toward Antioch, our state page lists every neighboring county map for California.
Using it on a phone
Most viewers work in a phone browser, handy when you're parked on a road near Oakley, but coverage can be spotty out of town. A screenshot of the parcel near Pleasant Hill with its ID is a good backup.
Aerials, labels and overlays
For land near Antioch, look in the layer list for municipal boundaries, floodplain and sometimes zoning; not every viewer has them all.
Owner, value and acreage
Sales history, if listed, helps with pricing around Oakley give a rough idea of values; an appraiser is the real authority.
A word on accuracy
Parcel lines are drawn for taxes, not measured on the ground, so the edge of a yard near Pleasant Hill can sit a few yards off the line on screen. For land near Walnut Creek, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Where the recorded documents are
The map is an index, not the title: deeds, plats and easements for land near Antioch are filed with the County Recorder. For land near Pleasant Hill, have ready the document number from the tax record so staff can find the deed fast.
Which office to call
Anything recorded against property around Pleasant Hill come from the County Recorder, usually searchable by name or document number. Zoning, permits and septic questions near Concord need the planning or permitting office, depending on whether the land is inside town limits.
Getting your bearings
Martinez serves as the county seat, which is where the courthouse records live. Other places on the map include Clayton, Antioch, Concord, and Pleasant Hill, where town lots give way to larger tracts. Roughly 1,155,025 people call Contra Costa County home (Census Bureau estimate, 2023) across roughly 717 square miles. Places such as Clayton-Marsh Creek-Greenville Fault, San Pablo Dam Reservoir, and Mount Diablo State Park are easy to spot when you zoom out from Clayton.
Sections, lots and bearings
California uses the Public Land Survey System, so rural legal descriptions near Antioch cite section, township and range. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though corrections make some sections near Pleasant Hill odd-sized. Keep the legal description for land near Concord for any title or survey request.
When the map won't load
When the map won't open around Antioch, try a desktop browser or clear the cache; links occasionally change, and our directory page keeps the current one.
Pittsburg: common questions
Can I search by owner name near Brentwood?
The parcel record for a lot near Clayton lists the owner of record; try variations if nothing comes up.
Does the map show city limits for Pittsburg?
For acreage around Pleasant Hill, many viewers offer aerial imagery plus layers like city limits, zoning or flood zones; open the layer list to see what's there.
Are parcel lines on the map exact in Pittsburg?
For most people, lines near Walnut Creek can be off by several feet or more, so a licensed surveyor should mark corners.
Does Pittsburg have its own GIS map?
It depends, but check the Pittsburg website or ask city hall; the county viewer remains the main parcel source.
Where do I ask about an assessment near Concord?
Values are the County Assessor's job; recorded documents belong to the County Recorder; planning offices cover zoning near Walnut Creek
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.