Blog · October 14, 2026 · Wisconsin
Using the West Allis GIS Map
Parcel data for this city comes from the county, and the viewer is free for land near South Milwaukee.
Main page: Milwaukee County, WI GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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For any lot around Hales Corners, a look at the West Allis GIS map gives you lines, owner names and parcel numbers. What this West Allis guide covers: which viewer to open, the fastest ways to search, and what to double-check with records.
Opening the West Allis GIS map
In most places the county maintains the parcel layer, which makes the Milwaukee County parcel viewer the main source for lots in West Allis.
Opening the official parcel viewer
Go first to the Milwaukee County parcel viewer; it maps every assessed parcel in the county, Wauwatosa included. If you only know roughly where the land is, pan along Interstate 794 and select the outline. If the land is near Greendale, the record panel usually lists the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
Getting your bearings
Milwaukee holds the county offices, home to the main records offices. You'll also find West Milwaukee, Wauwatosa, Hales Corners, and Greendale, each with its own cluster of lots. Roughly 916,205 people live in Milwaukee County (Census estimate, 2023) across about 241 square miles. Milwaukee County was formed in 1835, which matters when you trace an old farm's title. Features like Menomonee River and Kinnickinnic River are easy to spot when you zoom out from Shorewood.
West Allis and the county around it
The city lies within Milwaukee County, Wisconsin, and the county assessor maps its lots, especially near Glendale. Closer to West Milwaukee, the municipality handles matters such as zoning, permits and utilities for lots inside the boundary, but the county runs assessment and recording. Acreage past the city limits near Greendale generally falls under county rules rather than the town's.
What the map can't tell you
Acreage on the record is a tax-roll number; only a licensed surveyor can set the real boundary on land around Hales Corners. For acreage around Hales Corners, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Three ways to find a parcel
Acreage around Greendale might not have a street number, so zoom in from Interstate 794 and click the outline. Closer to Hales Corners, searching by parcel number never misses, and you'll find it on tax statements.
Keeping a record
Save a screenshot of the lot near Greendale and its record panel, so you have it when calling an office.
Where the recorded documents are
For anything that matters, pull the recorded deed from the Register of Deeds; the parcel map near Greendale only summarizes it. Long-held tracts near St. Francis can sit on a long string of deeds, and a title company is worth hiring if money is changing hands.
Field tips
The parcel map usually runs in a mobile browser, useful out on a road near Hales Corners, so load it before you lose signal. A screenshot of the parcel near Hales Corners with its ID keeps working without signal.
Land on the county line
Milwaukee County meets Muskegon County, MI, Ottawa County, MI, Ozaukee County, Racine County, and Washington County; every one of them runs a separate parcel map. Acreage along the edge near St. Francis may show up in two county records, so check the neighboring map as well. For acreage around Shorewood, the Platbookmapper state page lists each neighboring county map across Wisconsin.
What the layers show
An aerial view around Greendale to compare lines with fences and driveways.
When the map won't load
If the viewer stalls on a phone near St. Francis, try a desktop browser or clear the cache; links occasionally change, and our directory page keeps the current one.
Legal descriptions in Wisconsin
Wisconsin is laid out under the Public Land Survey System, so rural legal descriptions near Wauwatosa cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Hales Corners vary in size. Keep the legal description for land near Greendale for any title or survey request.
Who handles what
Questions about value or the owner field for land near St. Francis belong with the county real property listing office, since that office keeps the assessment data. Zoning, permits and septic questions near West Milwaukee are for the local planning and health departments, and the answer depends on jurisdiction.
What the record panel tells you
Sales history, if listed, helps with pricing in West Allis give a rough idea of values; they're not an appraisal.
Quick answers
How current is the parcel data in West Allis?
It depends, but owner data near St. Francis can lag new deeds by weeks; check recorded deeds for anything recent.
Are parcel lines on the map exact in West Allis?
Good question; lines near West Milwaukee can be off by several feet or more.
Does the city parcel viewer cost anything near Glendale?
In most cases, the Milwaukee County parcel viewer is free and opens without a login; some sites ask you to accept a disclaimer.
Does West Allis have its own GIS map?
Good question; West Allis may publish zoning or utility maps separately, while parcel data usually comes from the county.
Is the parcel map a survey in West Allis?
No; boundary questions near Wauwatosa need a licensed surveyor.
Open the official Milwaukee County, WI 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.