Blog · October 14, 2026 · California
Pleasant Hill Plat Map: finding the recorded plat
Lots in Pleasant Hill trace back to recorded plats filed with the county.
Main page: Contra Costa County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Lafayette says lot and block, the Pleasant Hill plat map is where those numbers come from. In this Pleasant Hill guide: where plats are filed, plat versus tax map, and the details that matter to buyers.
The Pleasant Hill plat map: start here
For a subdivision near Moraga, the deed or parcel record often names the subdivision and plat reference; use it to request a copy.
Pulling up a parcel
Lots and tracts near Lafayette appear on the Contra Costa County parcel viewer, which opens without registering. For a home near Orinda, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. Closer to Martinez, write down the parcel ID from that panel; each records desk in the county asks for it first.
Who handles what
Recorded documents for a parcel near Martinez sit in the index kept by the County Recorder, usually searchable by name or document number. Building or septic questions for a lot near Orinda are for the local planning and health departments, depending on whether the land is inside town limits.
On site with the map
Most viewers work in a phone browser, which helps when you're standing on land near Lafayette, though signal can drop in rural spots. A screenshot of the parcel near Orinda with its ID helps when you meet an owner or agent.
Pleasant Hill, CA: the basics
Pleasant Hill lies within Contra Costa County, California, and the county assessor maps its lots. For acreage around Orinda, 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 Martinez usually falls under county rules, not municipal ones.
When a parcel crosses a boundary
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. A tract near the line by Concord can show up across two assessors' files, so check the adjacent map as well. For land near Walnut Creek, the Platbookmapper state page links every neighboring county map across California.
A quick look at the area
Martinez holds the county offices, where most land records are kept. Other places on the map include Walnut Creek, Concord, and Lafayette, where town lots give way to larger tracts. About 1,155,025 people live in Contra Costa County (Census Bureau estimate, 2023) on about 717 square miles. Places such as Clayton-Marsh Creek-Greenville Fault, San Pablo Dam Reservoir, and Mount Diablo State Park help you orient on the aerial around Lafayette.
Two different maps
If the tax map and plat differ near Walnut Creek, go with the plat and a surveyor's work.
Backing up the map with records
The map is an index, not the title: deeds, plats and easements covering ground around Moraga are filed with the County Recorder. Older tracts around Moraga may trace back through a long string of deeds, and a title company can sort it out on a real sale.
Replats and vacations
An amended plat may change lots around Moraga, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
Lots, blocks and easements
If you're looking near Concord, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Land outside a subdivision
Acreage around Walnut Creek outside a subdivision may have no plat at all; the deed and any recorded survey describe it instead.
Sections, lots and bearings
California follows the Public Land Survey System, which means a tract near Moraga is described by section, township and range. Each section is nominally a mile square, about 640 acres, and a township holds 36 of them, though sections near Concord can be irregular. Copy the legal description from the record for the parcel near Walnut Creek for any title or survey request.
A word on accuracy
The acreage figure is an estimate; only a licensed surveyor sets the real lines on land around Martinez. Closer to Lafayette, records update in batches, so a deed recorded last month might lag behind.
Getting a copy
Closer to Moraga, many recorder offices offer an online index, while others require a visit or a request; small fees are common.
Frequently asked
How do I read lot and block in Pleasant Hill?
It points to a spot on the plat for that subdivision near Concord; the deed names the subdivision.
Where can I find the Pleasant Hill plat map?
For most people, recorded plats near Moraga are filed with the County Recorder; small copy fees are common.
What do the dashed lines on a plat mean in Pleasant Hill?
For most people, building on an easement near Lafayette is generally restricted; read the plat notes.
Is the Pleasant Hill plat map the same as the county GIS?
The plat near Concord is recorded, while the GIS layer is an approximation.
Is the parcel map a survey near Concord?
No; boundary questions near Walnut Creek need a licensed surveyor, so a fence may sit off the line
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.