Blog · October 14, 2026 · New York
The Chemung County Plat Book and the online parcel map
A printed atlas and the county viewer each have a place near Big Flats.
Main page: Chemung County, NY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Hunting for the latest Chemung County plat book? A plat book shows owners and tract lines on township pages, useful for farms near Lowman. Covered here for Chemung County: what's in a plat book, where to find editions, and the free online map that stays current.
Getting started with the Chemung County plat book
On ground around Erin, a plat book is a privately published atlas, that map ownership across the countryside, often organized by township.
The viewer Chemung County publishes
Property in and around Elmira are published on the Chemung County ArcGIS parcel map, free to use and open without a login. With a lot near Elmira, enter a street address, an owner's name or a parcel number, and the matching parcel lights up. For a home near Big Flats, copy the parcel ID while you have it open; each office in the county asks for it first.
Editions and availability
Editions come and go depending on publishers, so ask at the courthouse, extension office or a local library near Ashland.
Recorded documents worth pulling
When the details count, get the recorded deed from the County Clerk; the viewer just points to it, and that holds around Erin too. Long-held tracts near Big Flats can trace back through several deeds, and a title company earns its fee if money is changing hands.
Using the parcel viewer instead
Click a parcel near Big Flats for owner and acreage, then print or screenshot it.
Limits of the parcel data
For acreage around Elmira, listed acreage is a tax-roll number; just a licensed surveyor can set the real corners on the ground. For a home near Big Flats, records update in batches, so a deed recorded last month can take weeks to appear.
Printing your own
Screenshot each section of the viewer around Baldwin to build your own up-to-date atlas.
Places you'll see on the map
Elmira is the county seat, which is where the courthouse records live. Other places on the map include Ashland, Baldwin, Big Flats, and Catlin, each with its own cluster of lots. Around 81,325 people call Chemung County home (Census estimate, 2023) on about 407 square miles. The county was formed in 1836, which matters when you trace an old farm's title for land near Lowman.
Who uses plat books
Buyers and seed dealers around Catlin rely on them to see ownership across many tracts at once.
Neighboring parcel maps
Chemung County borders Schuyler County, Steuben County, Tioga County, Tompkins County, and Bradford County, PA; every one of them runs a separate parcel map. Ground near Baldwin that runs to the line may show up in two county records, so open the adjacent map before you assume the acreage. For property near Elmira, the Platbookmapper state page lists each bordering county map for New York.
Which office to call
Questions about value or the owner field for land near Ashland belong with the county Real Property Tax Services office, since that office keeps the assessment data. Zoning, permits and septic questions near Ashland need the planning or permitting office, depending on whether the land is inside town limits.
How land is described here
Older tracts around Ashland commonly use metes-and-bounds descriptions, a series of courses and distances from a starting point. Subdivision lots in Big Flats refer to a recorded plat, which is simpler to follow. Copy the legal description from the record for the parcel near Elmira for any title or survey request.
Field tips
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Erin, so load it before you lose signal. A screenshot of the parcel near Lowman with its ID keeps working without signal.
Not the same thing
A plat book is not a recorded plat: recorded plats near Erin are filed with the County Clerk, while the atlas is a reference.
Chemung County: common questions
Is there a current Chemung County plat book?
Good question; the extension office or courthouse near Erin usually knows; online parcel maps fill the gaps.
Are old plat books online for land near Big Flats?
If the land is near Baldwin, some older atlases have been digitized; call ahead.
Is a plat book the same as a recorded plat near Big Flats?
If you're looking near Catlin, recorded plats are legal documents at the County Clerk, and plat books are references.
Why does the plat book differ from the deed near Big Flats?
On ground around Big Flats, the deed and a survey decide; they're good for orientation.
Does the parcel map work on a phone near Elmira?
If you're looking near Ashland, no app is needed for most county viewers, though rural signal can drop.
Open the official Chemung County, NY 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.