Blog · October 14, 2026 · Pennsylvania
Using the Washington Plat Map
A recorded plat shows how land near Canonsburg was divided into lots.
Main page: Washington County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Trying to understand lot lines near West Middletown? Start with the Washington plat map, as it records the lot layout that deeds refer to. In this town guide: where plats are filed, plat versus tax map, and the details that matter to buyers, at least around Monongahela.
The Washington plat map: start here
For land around Houston, the deed or parcel record often names the subdivision and plat reference; bring that to the recorder's office or its online index.
Pulling up a parcel
Lots and tracts near Canonsburg are published on the Washington County ArcGIS parcel map, which opens without registering. With a lot near West Middletown, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. For land near Green Hills, the record panel typically gives the owner of record, acreage on the tax roll, the parcel number and often a sale date.
Where Washington fits in
Washington sits in Washington County, Pennsylvania, which means parcel data comes from the county. As the county seat, Washington hosts the courthouse, which puts the Recorder of Deeds close by. On ground around Green Hills, the municipality handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Land beyond the city limits near Green Hills usually answers to county rules rather than the town's.
Getting your bearings
Washington holds the county offices, home to the main records offices. Other places on the map include East Washington, Green Hills, Houston, and Canonsburg. Roughly 210,232 people call Washington County home (Census estimate, 2023) across roughly 857 square miles. Washington County was formed in 1781, and some chains of title near Canonsburg are long.
Sections, lots and bearings
Tracts outside towns near East Washington are often described by metes and bounds, which trace the boundary call by call. Town lots near West Middletown usually use lot and block from a recorded plat instead, making them easier to find. Write down the legal description for the tract near Claysville when you talk to a surveyor.
Limits of the parcel data
Listed acreage is a tax-roll number; just a licensed surveyor can set the real boundary on land around Green Hills. In and around Claysville, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Offices that can help
If the acreage or value on a parcel near Green Hills looks off are handled by the county assessment office, since that office keeps the assessment data. Questions about what you can build around Canonsburg go to planning, building or health offices, town or county, depending on location.
Two different maps
When the two disagree for a lot near Canonsburg, trust the recorded documents over the GIS layer.
Details on the Washington plat map
Near Houston, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Amended plats
Lots near Claysville can be combined or reconfigured by a replat, so check for later filings; street vacations near Houston show up in the records too.
Requesting the plat
For a tract near Claysville, some counties put plat images online, while others require a visit or a request; copy fees are usually small.
When there's no plat
Acreage around East Washington outside a subdivision may have no plat at all; the deed and any recorded survey describe it instead.
Taking the map into the field
Most viewers work in a phone browser, useful out on a road near Canonsburg, but coverage can be spotty out of town. A screenshot of the parcel near Canonsburg with its ID keeps working without signal.
Neighboring parcel maps
Washington County meets Allegheny County, Beaver County, Fayette County, Greene County, and Westmoreland County; every one of them runs a separate parcel map. A tract near the line by West Middletown can be split in two county records, so look at the adjacent map before you assume the acreage. For property near Houston, our state page links each bordering county map across Pennsylvania.
Backing up the map with records
The map is an index, not the title: deeds, subdivision plats and easements covering ground around Claysville are filed with the Recorder of Deeds. Older tracts near Houston may trace back through many deeds, and a title company earns its fee if money is changing hands.
Washington: common questions
Are old plats online for land near Claysville?
Closer to Green Hills, it varies; some offices have scanned older plats and some haven't; call before you visit.
What is a lot and block description near Bentleyville?
For land near Houston, lot and block refer to a numbered lot within a block on a recorded subdivision plat; the deed names the subdivision.
Where can I find the Washington plat map?
Generally, copies come from the Recorder of Deeds, often through an online index.
What is a replat near Allenport?
Good question; combining or splitting lots near Claysville usually needs a recorded plat change, often with a surveyor's drawing.
Where is the legal description for land near Canonsburg?
For land near Claysville, Deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Washington County, PA 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.