Blog · October 14, 2026 · Pennsylvania
Reading the Aliquippa Plat Map for a lot
Lots in Aliquippa trace back to recorded plats filed with the county.
Main page: Beaver County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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If a legal description for land in Aliquippa cites a lot number, look up the Aliquippa plat map it refers to. What this Aliquippa guide covers: where plats are filed, plat versus tax map, and what to look for on the sheet.
The Aliquippa plat map: start here
For a lot in Aliquippa, look for the plat book reference on the parcel record; use it to request a copy.
Where the parcel data lives
Property in and around Baden can be looked up on the Beaver County parcel viewer, which opens without registering. For a tract near Baden, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. For land near South Heights, the record panel normally shows the owner of record, acreage on the tax roll, a parcel ID and sometimes recent sales.
Where Aliquippa fits in
Aliquippa sits in Beaver County, Pennsylvania, which means parcel data comes from the county. If you're looking near Monaca, 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 town limits toward Baden often answers to county rules rather than the town's.
When a plat changes
Lots near Conway can be combined or reconfigured by a replat, so check for later filings; street vacations near Baden show up in the records too.
Who handles what
If the acreage or value on a parcel near Monaca looks off are handled by the county assessment office, since that office keeps the assessment data. Questions about what you can build around Monaca need the planning or permitting office, town or county, depending on location.
Backing up the map with records
Before you sign anything, get the recorded deed from the Recorder of Deeds; the parcel map near Monaca only summarizes it. Out toward Baden, have ready the instrument number listed on the parcel record so staff can find the deed fast.
When a parcel crosses a boundary
Beaver County borders Columbiana County, OH, Allegheny County, Butler County, Lawrence County, and Washington County, and each of those keeps its own parcel map. A tract near the line by Baden can be split in two county records, so check the adjacent map before you assume the acreage. With a lot near Baden, our state page links each neighboring county map for Pennsylvania.
How a plat differs from the tax map
The tax map on the Beaver County parcel viewer is a summary, but the recorded plat is what the deed relies on.
Using it on a phone
Most viewers work in a phone browser, handy when you're parked on a road near South Heights, though signal can drop in rural spots. A screenshot of the parcel near Economy with its ID helps when you meet an owner or agent.
Lots, blocks and easements
For land near Economy, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
What the map can't tell you
Listed acreage is an estimate; just a licensed surveyor can set the real corners on land around Economy. For property near Monaca, records update in batches, so a deed recorded last month might lag behind.
Metes and bounds instead
Acreage around South Heights outside a subdivision is often described by metes and bounds or survey description; the deed and any recorded survey describe it instead.
How land is described here
Rural deeds near Baden commonly use metes-and-bounds descriptions, listing bearings, distances and landmarks. Platted lots around Economy usually use lot and block from a recorded plat instead, making them easier to find. Keep the legal description for land near Economy when you talk to a surveyor.
Requesting the plat
In and around Monaca, some counties put plat images online, otherwise call or visit with the reference; small fees are common.
Getting your bearings
Beaver is the county seat, which is where the courthouse records live. Other places on the map include Ambridge, Baden, South Heights, and Conway, where town lots give way to larger tracts. Around 165,631 people live in Beaver County (Census estimate, 2023) across some 435 square miles. Beaver County dates to 1800, and some chains of title near Monaca are long. Places such as Ohio River Islands National Wildlife Refuge make handy reference points on the map near Conway.
Quick answers
Is the town plat map the same as the county GIS near Big Beaver?
For most people, the plat near Baden is recorded, while the GIS layer is an approximation; trust the plat when they differ.
How do I split a lot around Beaver Falls?
In most cases, lot splits in Aliquippa go through the planning office, often with a surveyor's drawing.
How do I get a copy of a plat in Aliquippa?
Usually, recorded plats near Monaca are filed with the Recorder of Deeds; small copy fees are common.
What does lot 7, block 3 mean near Ambridge?
For a parcel near South Heights, lot and block refer to a numbered lot within a block on a recorded subdivision plat, so pull that plat for dimensions.
Is the parcel map a survey in Aliquippa?
The map near Economy is approximate.
Open the official Beaver 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.