Blog · October 14, 2026 · Louisiana
Reading the Opelousas Plat Map for a lot
Lots in Opelousas trace back to recorded plats filed with the county.
Main page: St. Landry Parish, LA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a listing near Leonville mentions a lot number, the Opelousas plat map is where those numbers come from. What this Opelousas guide covers: where plats are filed, how a plat differs from a parcel map, and the details that matter to buyers.
The Opelousas plat map: start here
For land around Port Barre, the deed or parcel record often names the subdivision and plat reference; that makes the request quick.
Opening the official parcel viewer
Your first stop is the St. Landry Parish parcel viewer; it maps every tax parcel in the parish, Leonville included. With a lot near Grand Coteau, put in a street address, an owner's name or a parcel number, and the viewer zooms to the match. Write down the parcel ID before closing the panel; every office in the parish asks for it first.
The paper trail behind a parcel
For anything that matters, pull the recorded deed from the Clerk of Court; the parcel line is a drawing of it. Inherited tracts in the parish can trace back through several deeds, so a title company earns its fee if money is changing hands.
St. Landry Parish in a few facts
Opelousas is the county seat, which is where the courthouse records live. You'll also find Washington, Leonville, Grand Coteau, and Port Barre, each with its own cluster of lots. About 81,464 people call St. Landry Parish home (Census estimate, 2023) on some 924 square miles. St. Landry Parish dates to 1807, which matters when you trace an old farm's title. Features like Atchafalaya National Wildlife Refuge help you orient on the aerial around Leonville.
When a parcel crosses a boundary
St. Landry Parish borders Acadia Parish, Avoyelles Parish, Evangeline Parish, Lafayette Parish, and Pointe Coupee Parish, and each of those keeps its own parcel map. Acreage along the edge near Arnaudville may be split in two parish records, so check the adjacent map too. For a home near Grand Coteau, our state page lists each neighboring parish map for Louisiana.
Legal descriptions in Louisiana
Louisiana is laid out under the Public Land Survey System, so rural legal descriptions near Arnaudville cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though corrections make some sections near Port Barre odd-sized. Copy the legal description from the record for the parcel near Grand Coteau when you talk to a surveyor.
When a plat changes
Lots near Arnaudville can be combined or reconfigured by a replat, so check for later filings; street vacations near Grand Coteau show up in the records too.
Getting answers from the right desk
Deeds, mortgages and recorded plats for land near Arnaudville are with the Clerk of Court, often with an online index. Zoning, permits and septic questions near Grand Coteau need the planning or permitting office, town or parish, depending on location.
City limits and county records
Opelousas is part of St. Landry Parish, Louisiana, which means parcel data comes from the county. As the county seat, Opelousas hosts the courthouse, which puts the Clerk of Court close by. If the land is near Grand Coteau, city or town hall handles matters such as zoning, permits and utilities inside its limits, while the county keeps the tax map. Acreage past the city limits toward Port Barre usually falls under county rules, not municipal ones.
When there's no plat
Acreage around Leonville outside a subdivision is often described by metes and bounds or survey description; look for a recorded survey for land near Grand Coteau.
How a plat differs from the tax map
The St. Landry Parish parcel viewer draws parcels for taxes, but the recorded plat is what the deed relies on.
Reading the plat sheet
Recorded easements around Sunset stay with the land when it sells; check the plat notes and any covenants.
On site with the map
Most viewers work in a phone browser, useful out on a road near Leonville, but coverage can be spotty out of town. A screenshot of the parcel near Grand Coteau with its ID helps when you meet an owner or agent.
Getting a copy
Closer to Washington, some counties put plat images online, while others require a visit or a request; copy fees are usually small.
A word on accuracy
Listed acreage is a tax-roll number; just a licensed surveyor establishes the real corners for a parcel near Washington. In and around Port Barre, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Questions about the Opelousas plat map
What is a replat around Sunset?
Lot splits in Opelousas go through the planning office.
Are old plats online in Opelousas?
For acreage around Leonville, it varies; some offices have scanned older plats and some haven't.
What do the dashed lines on a plat mean in Opelousas?
Out toward Port Barre, recorded plat easements usually show on the sheet; read the plat notes.
Who has recorded plats for land near Arnaudville?
The Clerk of Court keeps recorded plats.
Where do I find the parcel number for land near Grand Coteau?
It's the number the Parish Assessor uses to track a tract near Sunset; copy it before you call anyone.
Open the official St. Landry Parish, LA 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.