Blog · October 14, 2026 · California
Using the Martinez Zoning Map
A parcel's zoning district shapes building, splitting and business use near Hercules.
Main page: Contra Costa County, CA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any building plan near Orinda, look at the Martinez zoning map first: a district label decides setbacks, lot size and uses. What this city guide covers: which office sets the rules for a lot, matching a lot to its zoning district, and when a variance or rezoning comes up, especially near Concord.
Getting started with the Martinez zoning map
Inside town or city limits, zoning usually comes from the municipality, so a lot in Martinez follows that code. Past the city line, around Hercules, the county may have its own zoning, or none at all; confirm with the county office. A fast way to settle it: ask whether the parcel near Pleasant Hill is inside the boundary.
The viewer Contra Costa County publishes
Your first stop is the Contra Costa County parcel viewer; it includes every assessed parcel in the county, Lafayette included. Around Pleasant Hill, type a street address, an owner's name or a parcel number, and the matching parcel lights up. For a parcel near Hercules, the parcel card typically gives the owner of record, acreage on the tax roll, the parcel number and often a sale date.
Sections, lots and bearings
California is laid out under the Public Land Survey System, so deeds around Orinda reference sections and townships. A standard section is about one square mile, roughly 640 acres, and a township holds 36 of them, though real sections near Pleasant Hill vary in size. Copy the legal description from the record for the parcel near Hercules for any title or survey request.
Limits of the parcel data
Acreage on the record is an estimate; only a licensed surveyor can set the real lines for a parcel near Hercules. In and around Orinda, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Calling planning staff
When you call about land near Orinda, give the parcel number and your intended use; ask what's allowed by right and what needs a permit. Ask whether a parcel near Pleasant Hill meets current minimum size, because nonconforming lots can carry limits.
Contra Costa County in a few facts
Martinez holds the county offices, which is where the courthouse records live. You'll also find Pleasant Hill, Concord, Lafayette, and Walnut Creek, where town lots give way to larger tracts. About 1,155,025 people call Contra Costa County home (Census estimate, 2023) on some 717 square miles. Features like Clayton-Marsh Creek-Greenville Fault, San Pablo Dam Reservoir, and Mount Diablo State Park help you orient on the aerial around Hercules.
City limits and county records
Martinez sits in Contra Costa County, California, so its parcels are on the county's map. Martinez is also the county seat, which puts the County Recorder close by. For acreage around Pleasant Hill, city or town hall handles matters such as zoning, permits and utilities within town limits, and the county still keeps the parcel and deed records. Land beyond the town limits out by Hercules generally follows county rules rather than the town's.
Finding a parcel's zoning district
Pull the parcel up on the Contra Costa County parcel viewer, copy its parcel ID, and use it when you ask the planning office near Walnut Creek. For property near Hercules, district codes like R-1, C-2 or A-1 point to a table of rules in the ordinance; the letters vary from place to place.
Next door to Contra Costa County
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 Hercules that runs to the line can be split in two county records, so look at the neighboring map as well. If you're looking near Hercules, our state page lists each neighboring county map for California.
What the district controls
On a lot around Antioch, check minimum lot size, setbacks from each line, height limits and lot coverage. If the land is near Hercules, overlay districts, whether historic, floodplain or corridor, can add rules on top of the base district.
Offices that can help
Anything recorded against property around Walnut Creek sit in the index kept by the County Recorder, often with an online index. Zoning, permits and septic questions near Hercules go to planning, building or health offices, town or county, depending on location.
Asking for an exception
For a parcel near Hercules, most of these involve time, so budget weeks or months before you close.
Zoning is only step one
Even when zoning allows a use near Hercules, a building permit is a separate step; septic or sewer and driveway access are often reviewed too.
Quick answers
How long does rezoning take near Hercules?
Good question; rezoning in the city usually takes weeks to months around El Cerrito.
Are HOA rules the same as zoning in Martinez?
Good question; covenants are private and zoning is public law, and a lot near Orinda must meet both, so follow whichever is stricter.
What are setbacks in Martinez?
For most people, the district rules for Martinez list front, side and rear setbacks; planning staff can confirm for your lot.
What is a variance in Martinez?
Short answer: boards in this city grant variances only when strict rules cause a real hardship; neighbors get notice, especially near El Cerrito.
What's the tax parcel number used for in Martinez?
The parcel ID identifies one tax parcel near Orinda; copy it before you call anyone.
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.