Blog · October 14, 2026 · New York
Using the Olean GIS Map
Most property questions near Franklinville start with a parcel lookup.
Main page: Cattaraugus County, NY GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For a parcel in or near Olean, the Olean GIS map shows parcel boundaries plus basic tax data. This Olean guide covers: which viewer to open, the fastest ways to search, and the limits worth knowing.
Opening the Olean GIS map
For property near Allegany, some cities also run their own GIS portal for utilities or zoning; that can add detail on top of the county map.
The viewer Cattaraugus County publishes
Begin with the Cattaraugus County ArcGIS parcel map; it includes every tax parcel around Portville and Little Valley. Around Franklinville, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. In and around Allegany, the record panel normally shows the owner of record, acreage on the tax roll, the parcel number and often a sale date.
A word on accuracy
Parcel lines are drawn for taxes, not measured on the ground, so the edge of a yard near Little Valley often sits some distance off the line on screen. In and around Little Valley, records update in batches, so a deed recorded last month might lag behind.
Who handles what
For assessment questions about property around Portville go to the county Real Property Tax Services office, since that office keeps the assessment data. Building or septic questions for a lot near Portville need the planning or permitting office, town or county, depending on location.
When the map won't load
When the map won't open around Franklinville, try a desktop browser or clear the cache; the Platbookmapper county page tracks the current link.
When a parcel crosses a boundary
Cattaraugus County touches Allegany County, Chautauqua County, Erie County, Wyoming County, and McKean County, PA, and each of those keeps its own parcel map. Acreage along the edge near Salamanca may show up in two county records, so look at the neighboring map as well. If you're looking near Salamanca, our state page lists each bordering county map across New York.
Where the recorded documents are
The map is an index, not the title: deeds, plats and easements for land near Franklinville are kept by the County Clerk. Inherited tracts near Portville can trace back through several deeds, so a title company earns its fee if money is changing hands.
City limits and county records
Olean lies within Cattaraugus County, New York, so its parcels are on the county's map. If the land is near Allegany, the municipality handles things like zoning, permits and utilities within town limits, and the county still keeps the parcel and deed records. Acreage past the town limits near Little Valley usually answers to county rules rather than the town's.
Three ways to find a parcel
Addresses are the easiest route inside Olean; owner search often wants the surname first. In and around Little Valley, searching by parcel number never misses, and you'll find it on tax statements.
Layers worth turning on
Toggling imagery near Salamanca shows roofs, driveways and tree lines next to the parcel edges.
Getting your bearings
Little Valley holds the county offices, home to the main records offices. You'll also find Allegany, Portville, Salamanca, and Franklinville. About 75,600 people call Cattaraugus County home (Census estimate, 2023) on roughly 1,308 square miles. Cattaraugus County was formed in 1817, so old deeds can run back a long way.
Sections, lots and bearings
Rural deeds near Ellicottville are often described by metes and bounds, which trace the boundary call by call. Platted lots around Allegany are typically described by lot and block, which is simpler to follow. Write down the legal description for the tract near Portville before you request a deed or survey.
What the record panel tells you
Recent sales on nearby lots around Little Valley are a useful starting point; they're not an appraisal.
Using it on a phone
Most viewers work in a phone browser, handy when you're parked on a road near Salamanca, but coverage can be spotty out of town. A screenshot of the parcel near Allegany with its ID is a good backup.
Keeping a record
Print or screenshot the parcel near Portville with its ID visible, so you have it when calling an office.
Questions about the Olean GIS map
Why does a recent sale near Little Valley not show?
In most cases, owner data near Little Valley can lag new deeds by weeks.
Does Olean have its own GIS map?
Olean may publish zoning or utility maps separately.
How do I find who owns a lot near Salamanca?
Short answer: click the lot near Portville to see the owner.
Are parcel lines on the map exact near Little Valley?
It depends, but the map near Little Valley isn't a survey, so a licensed surveyor should mark corners.
Who do I call about a parcel near Portville?
Values are the county Real Property Tax Services office's job; recorded documents belong to the County Clerk; planning offices cover zoning near Little Valley
Open the official Cattaraugus 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.