Blog · October 14, 2026 · Pennsylvania
Monroeville Plat Map: finding the recorded plat
Lots in Monroeville trace back to recorded plats filed with the county.
Main page: Allegheny County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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If a legal description for land in Monroeville cites a lot number, the Monroeville plat map is where those numbers come from. This Monroeville guide covers: where to request a copy, plat versus tax map, and the details that matter to buyers.
Who keeps the Monroeville plat map
For a lot in Monroeville, the deed usually cites the plat; use it to request a copy.
Getting to the right map
Go first to the Allegheny County ArcGIS parcel map; it maps every tax parcel in the county, Wilmerding included. Near Pitcairn, enter a street address, an owner's name or a parcel number, then pick the result to center the map on it. If you're looking near East McKeesport, a pop-up or side panel typically gives the owner of record, acreage on the tax roll, a parcel ID and sometimes recent sales.
Getting answers from the right desk
Questions about value or the owner field for land near Pitcairn are handled by the county assessment office, which maintains the tax roll. Building or septic questions for a lot near Wall go to planning, building or health offices, and the answer depends on jurisdiction.
Monroeville, PA: the basics
Monroeville lies within Allegheny County, Pennsylvania, which means parcel data comes from the county. Closer to Wilmerding, 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. Lots just outside the city limits near Wilmerding generally answers to county rules, not municipal ones.
Two different maps
The Allegheny County ArcGIS parcel map draws parcels for taxes, whereas the plat carries surveyed dimensions.
Legal descriptions in Pennsylvania
Rural deeds near Pitcairn are often described by metes and bounds, listing bearings, distances and landmarks. Platted lots around Wall are typically described by lot and block, which is simpler to follow. Keep the legal description for land near Turtle Creek for any title or survey request.
Field tips
The parcel map usually runs in a mobile browser, handy when you're parked on a road near East McKeesport, so load it before you lose signal. A screenshot of the parcel near Pitcairn with its ID keeps working without signal.
Amended plats
Lots near Wall can be combined or reconfigured by a replat, so check for later filings; street vacations show up in the records too.
What a plat shows
If the land is near Wilmerding, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Recorded documents worth pulling
When the details count, request the recorded deed from the Recorder of Deeds; the parcel map near East McKeesport only summarizes it. Inherited tracts around East McKeesport may go back through several deeds, so a title company is worth hiring before a purchase.
Limits of the parcel data
The acreage figure is an estimate; only a licensed surveyor establishes the real lines for a parcel near Wilmerding. Records update in batches, so a recent sale near Turtle Creek may not show yet.
Metes and bounds instead
Rural land near Turtle Creek that was never subdivided may have no plat at all; the deed and any recorded survey describe it instead.
Getting a copy
For a tract near East McKeesport, many recorder offices offer an online index, otherwise call or visit with the reference; small fees are common.
Getting your bearings
Pittsburgh holds the county offices, where most land records are kept. You'll also find Pitcairn, Wall, Trafford, and Wilmerding, where town lots give way to larger tracts. Roughly 1,224,825 people live in Allegheny County (Census Bureau estimate, 2023) across roughly 730 square miles. Allegheny County dates to 1788, which matters when you trace an old farm's title. Features like Allegheny River and Monongahela River are easy to spot when you zoom out from Pitcairn.
Neighboring parcel maps
Allegheny County meets Armstrong County, Beaver County, Butler County, Washington County, and Westmoreland County, and each of those keeps its own parcel map. Acreage along the edge near Pitcairn can show up across two assessors' files, so check the neighboring map too. If you're looking near Turtle Creek, our state page links every bordering county map for Pennsylvania.
Quick answers
Is a plat map a survey near Turtle Creek?
If the land is near Wall, GIS parcels are tax drawings, and the recorded plat is the legal document; trust the plat when they differ.
How do I get a copy of a plat in Monroeville?
Generally, copies come from the Recorder of Deeds, often through an online index; small copy fees are common.
How far back do plats go near Trafford?
The Recorder of Deeds can say what's available.
How do I split a lot in Monroeville?
Short answer: lot splits in Monroeville go through the planning office; ask staff about the process.
What's a legal description around Trafford?
Around Wall, Deeds use lot and block, metes and bounds or survey descriptions; copy it for any survey or title request.
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.