Blog · October 14, 2026 · Missouri
Using the Olivette Plat Map
Lots in Olivette trace back to recorded plats filed with the county.
Main page: St. Louis County, MO GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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If a legal description for land in Olivette cites a lot number, you'll need the Olivette plat map to make sense of it. What this Olivette guide covers: where plats are filed, how a plat differs from a parcel map, and what to look for on the sheet.
Who keeps the Olivette plat map
For land around Sycamore Hills, the deed usually cites the plat; that makes the request quick.
Where the parcel data lives
Your first stop is the St. Louis County ArcGIS parcel map; it maps each tax parcel from Vinita Park to Hanley Hills. Closer to Sycamore Hills, enter a street address, an owner's name or a parcel number, and the matching parcel lights up. For a parcel near Ladue, the record panel typically gives the owner of record, assessed acreage, the parcel number and sometimes recent sales.
City limits and county records
Olivette is part of St. Louis County, Missouri, so its parcels are on the county's map. Out toward Overland, city or town hall handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Acreage past the town limits toward Vinita Park generally follows county rules, not municipal ones.
Metes and bounds instead
Acreage around Overland outside a subdivision is often described by metes and bounds or survey description; look for a recorded survey for land near Hanley Hills.
On site with the map
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Ladue, but coverage can be spotty out of town. A printout of the tract near Sycamore Hills helps when you meet an owner or agent.
The paper trail behind a parcel
The map is an index, not the title: recorded deeds, plats and easements covering ground around Hanley Hills are filed with the Recorder of Deeds. For a home near Vinita Park, have ready the instrument number shown in the record panel to skip a name search.
Before you lean on the lines
Listed acreage is an estimate; just a licensed surveyor establishes the real lines on land around Overland. If you're looking near Overland, records update in batches, so a deed recorded last month can take weeks to appear.
Reading the legal description
Missouri follows the Public Land Survey System, which means a tract near Overland is described by 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 Hanley Hills odd-sized. Keep the legal description for land near Vinita Park when you talk to a surveyor.
When a plat changes
Lots near Overland can be combined or reconfigured by a replat, search the index for replats of the same subdivision; vacated streets or alleys also get recorded.
How a plat differs from the tax map
When the two disagree for a lot near Ladue, the recorded plat and a survey control.
Next door to St. Louis County
On ground around Ladue, st. Louis County touches Madison County, IL, Monroe County, IL, St. Clair County, IL, Franklin County, and Jefferson County, and each of those keeps its own parcel map. A tract near the line by Overland can be split in two county records, so check the adjacent map too. For land near Charlack, our state page lists every bordering county map across Missouri.
Offices that can help
If the acreage or value on a parcel near Hanley Hills looks off belong with the County Assessor, which maintains the tax roll. Zoning, permits and septic questions near Charlack need the planning or permitting office, and the answer depends on jurisdiction.
Lots, blocks and easements
Easements on the plat near Overland stay with the land when it sells; check the plat notes and any covenants.
Getting your bearings
If you're looking near Charlack, clayton is the county seat, which is where the courthouse records live. Other places on the map include Overland, Vinita Park, Ladue, and Sycamore Hills, each with its own cluster of lots. For land near Hanley Hills, about 987,059 people live in St. Louis County (Census estimate, 2023) on about 508 square miles. St. Louis County was formed in 1812, and some chains of title near Sycamore Hills are long. Features like Spanish Lake Park and Babler State Park help you orient on the aerial around Hanley Hills.
Getting a copy
With a lot near Sycamore Hills, some counties put plat images online, while others require a visit or a request; small fees are common.
Questions about the Olivette plat map
What is a replat in Olivette?
For most people, combining or splitting lots near Vinita Park usually needs a recorded plat change; ask staff about the process.
Are old plats online in Olivette?
Around Overland, it varies; some offices have scanned older plats and some haven't; call before you visit.
What is a lot and block description in Olivette?
If the land is near Overland, the description sends you to a specific recorded plat, so pull that plat for dimensions.
How do I get a copy of a plat in Olivette?
For most people, recorded plats near Charlack are filed with the Recorder of Deeds; small copy fees are common.
Why do offices ask for the parcel ID around Hanley Hills?
The parcel ID identifies one tax parcel near Vinita Park; copy it before you call anyone.
Open the official St. Louis County, MO 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.