Blog · October 14, 2026 · Pennsylvania
West Mifflin Plat Map, Pennsylvania: plats and lots
A recorded plat shows how land near Dravosburg was divided into lots.
Main page: Allegheny County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a deed near Glassport says lot and block, you'll need the West Mifflin plat map to make sense of it. In this West Mifflin guide: where plats are filed, plat versus tax map, and what to look for on the sheet.
Who keeps the West Mifflin plat map
For a lot in West Mifflin, the deed or parcel record often names the subdivision and plat reference; that makes the request quick.
The viewer Allegheny County publishes
Go first to the Allegheny County ArcGIS parcel map; it maps every tax parcel around Port Vue and Munhall. For a home near Glassport, enter a street address, an owner's name or a parcel number, and the viewer zooms to the match. Out toward Port Vue, the record panel typically gives the owner of record, assessed acreage, a parcel ID and in many cases the last transfer.
How land is described here
Rural deeds near Dravosburg commonly use metes-and-bounds descriptions, a series of courses and distances from a starting point. Town lots near West Homestead refer to a recorded plat, which is simpler to follow. Keep the legal description for land near Glassport before you request a deed or survey.
Where West Mifflin fits in
West Mifflin lies within Allegheny County, Pennsylvania, so its parcels are on the county's map. Around Glassport, the municipality handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Acreage past the town limits near Dravosburg generally follows county rules rather than the town's.
When a plat changes
An amended plat may change lots around Port Vue, so check for later filings; vacated streets or alleys also get recorded.
Before you lean on the lines
The acreage figure is an estimate; only a licensed surveyor sets the real lines for a parcel near Port Vue. If the land is near West Homestead, records update in batches, so a deed recorded last month might lag behind.
Two different maps
The Allegheny County ArcGIS parcel map draws parcels for taxes, but the recorded plat is what the deed relies on.
Lots, blocks and easements
Recorded easements around West Homestead can block a shed or pool; read the notes on the sheet.
Metes and bounds instead
Rural land near West Homestead that was never subdivided may have no plat at all; the deed and any recorded survey describe it instead.
Field tips
Most viewers work in a phone browser, useful out on a road near Glassport, so load it before you lose signal. A screenshot of the parcel near Munhall with its ID is a good backup.
Getting your bearings
Pittsburgh holds the county offices, home to the main records offices. Smaller places on the map include Dravosburg, Port Vue, Glassport, and Munhall, where town lots give way to larger tracts. Roughly 1,224,825 people live in Allegheny County (Census estimate, 2023) on roughly 730 square miles. Allegheny County was organized in 1788, and some chains of title near Port Vue are long. Places such as Allegheny River and Monongahela River help you orient on the aerial around Glassport.
Online indexes and office visits
For land near Dravosburg, some counties put plat images online, while others require a visit or a request; copy fees are usually small.
Deeds, plats and who keeps them
The map is an index, not the title: recorded deeds, plats and easements covering ground around Port Vue are kept by the Recorder of Deeds. On ground around Port Vue, have ready the document number from the tax record so staff can find the deed fast.
Getting answers from the right desk
If the acreage or value on a parcel near Baldwin looks off go to the county assessment office, since that office keeps the assessment data. Building or septic questions for a lot near Port Vue need the planning or permitting office, and the answer depends on jurisdiction.
Neighboring parcel maps
Allegheny County borders Armstrong County, Beaver County, Butler County, Washington County, and Westmoreland County, and each of those keeps its own parcel map. Ground near Munhall that runs to the line may be split across two assessors' files, so open the adjacent map before you assume the acreage. Closer to Port Vue, our state page lists each neighboring county map across Pennsylvania.
Quick answers
What do the dashed lines on a plat mean around West Homestead?
Good question; building on an easement near Port Vue is generally restricted; read the plat notes.
What is a replat near Port Vue?
Good question; lot splits in West Mifflin go through the planning office.
Who has recorded plats for land near Dravosburg?
For most people, copies come from the Recorder of Deeds, often through an online index; use the plat reference from the deed or parcel record.
Are old plats online around Port Vue?
Good question; older plats near West Homestead may be on film or paper.
Which office handles records for land near Dravosburg?
The county assessment office handles values and the tax roll, and the Recorder of Deeds keeps deeds; planning offices cover zoning near Port Vue
Open the official Allegheny 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.