Blog · October 14, 2026 · California
Lafayette Plat Map, California: plats and lots
A recorded plat shows how land near Pleasant Hill was divided into lots.
Main page: Contra Costa County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Buying a lot in a subdivision near Moraga? Start with the Lafayette plat map, as it records the lot layout that deeds refer to. What this Lafayette guide covers: where plats are filed, how a plat differs from a parcel map, and what to look for on the sheet.
Getting started with the Lafayette plat map
For a home near Orinda, recorded plats sit with the County Recorder, usually in a plat book or cabinet.
Where the parcel data lives
Your first stop is the Contra Costa County parcel viewer; it includes each tax parcel around Orinda and Concord. On ground around Concord, enter a street address, an owner's name or a parcel number, and the matching parcel lights up. With a lot near Orinda, the parcel card usually lists the owner of record, assessed acreage, the parcel number and in many cases the last transfer.
When there's no plat
Acreage around Martinez outside a subdivision may have no plat at all; the deed and any recorded survey describe it instead.
Lafayette and the county around it
Lafayette is part of Contra Costa County, California, which means parcel data comes from the county. In and around Martinez, city or town hall handles things like zoning, permits and utilities for lots inside the boundary, while the county keeps the tax map. Lots just outside the town limits toward Martinez generally falls under county rules, not municipal ones.
Deeds, plats and who keeps them
The map is an index, not the title: deeds, plats and easements covering ground around Orinda are filed with the County Recorder. Long-held tracts around Martinez can trace back through a long string of deeds, so a title company is worth hiring if money is changing hands.
Recorded plat or GIS layer
If the tax map and plat differ near Orinda, the recorded plat and a survey control.
What the map can't tell you
The acreage figure is an assessed number; just a licensed surveyor sets the real corners on land around Orinda. For property near Moraga, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Using it on a phone
The parcel map usually runs in a mobile browser, useful out on a road near Concord, but coverage can be spotty out of town. A saved image of the lot near Martinez and its lines helps when you meet an owner or agent.
Contra Costa County in a few facts
Martinez is the county seat, home to the main records offices. Smaller places on the map include Orinda, Moraga, Walnut Creek, and Pleasant Hill. Roughly 1,155,025 people call Contra Costa County home (Census estimate, 2023) spread over some 717 square miles. Places such as Clayton-Marsh Creek-Greenville Fault, San Pablo Dam Reservoir, and Mount Diablo State Park make handy reference points on the map near Moraga.
Getting answers from the right desk
If the acreage or value on a parcel near Orinda looks off belong with the County Assessor, the office behind the parcel record. Building or septic questions for a lot near Martinez need the planning or permitting office, depending on whether the land is inside town limits.
Land on the county line
Contra Costa County borders Alameda County, Marin County, Sacramento County, San Francisco County, and San Joaquin County; every one of them runs a separate parcel map. Ground near Moraga that runs to the line can show up across two assessors' files, so check the neighboring map too. With a lot near Pleasant Hill, our state page lists each neighboring county map for California.
Reading the plat sheet
For property near Pleasant Hill, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
When a plat changes
An amended plat may change lots around Concord, so check for later filings; street vacations show up in the records too.
Legal descriptions in California
California is laid out under the Public Land Survey System, so deeds around Moraga reference sections and townships. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though sections near Concord can be irregular. Write down the legal description for the tract near Orinda before you request a deed or survey.
Requesting the plat
For a home near Martinez, many recorder offices offer an online index, while others require a visit or a request; small fees are common.
Quick answers
Is a plat map a survey around Moraga?
For most people, the plat near Walnut Creek is recorded, while the GIS layer is an approximation; a surveyor ties it to the ground.
Are old plats online near Orinda?
Closer to Orinda, it varies; some offices have scanned older plats and some haven't.
What is a lot and block description for land near Moraga?
It depends, but it points to a spot on the plat for that subdivision near Concord.
Who has recorded plats for land near Orinda?
Around Orinda, the County Recorder keeps recorded plats.
Why don't the lines match my fence near Moraga?
No; boundary questions near Moraga need a licensed surveyor.
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.