You can search the St. Croix County tax map for free through two online portals: Beacon and COMPASS. Both show parcel boundaries, ownership, assessed values, acreage, and related land data. Search by parcel identification number (PIN), street address, or owner name. The data is maintained by the county Land Information Office at the Government Center in Hudson and reflects recorded subdivisions, ownership transfers, and assessment changes as they’re processed.
How to Search for a Property
Figure out which piece of identifying information you have before you open the map. The fastest route is a parcel identification number, the unique code assigned to every taxable tract in the county. You’ll find it on tax bills, assessment notices, and recorded deeds. A street address or the current owner’s legal name will also work.
Wisconsin law requires county boards to appoint a real property lister who maintains ownership data, parcel numbers, legal descriptions, acreage, and mailing addresses for every parcel in the county.1Wisconsin State Legislature. Wisconsin Code 70 – Official Real Property Lister, Forms for Officers Legal descriptions come from the latest records on file with the Register of Deeds, so what you see online tracks what has been officially recorded.
Using the Beacon Portal
Beacon is the county’s primary mapping tool, hosted by Schneider Geospatial. It provides land records, tax and assessment data, aerial photography, one-foot contour lines, and related parcel information.2St. Croix County, WI. Maps, GIS and Land Information Open the St. Croix County Beacon site, type your PIN, address, or owner name into the search bar, and the map centers on the matching parcel with its boundaries highlighted.
From there, zoom in and out with the built-in tools or click neighboring parcels to pull up their details. An information pane shows the selected parcel’s ownership, assessed value, acreage, and other recorded data. You can toggle between layers to see aerial imagery, contour lines, or the standard parcel grid.
The parcel detail pane typically includes boundaries with total acreage, the owner’s name and mailing address, the current assessed value for land and improvements, and the applicable tax jurisdiction codes. Adjacent parcels appear in the same view, which makes it easy to compare lot sizes and shapes. These data points come from the county real property lister’s records, including legal descriptions drawn from the Register of Deeds and school district or special purpose district codes.1Wisconsin State Legislature. Wisconsin Code 70 – Official Real Property Lister, Forms for Officers
Beacon runs best in Chrome, Firefox, Microsoft Edge, or Safari.3Beacon – Schneider Geospatial. Internet Explorer Compatibility Warning It works on tablets and phones, but a larger screen makes it much easier to zoom without accidentally selecting the wrong parcel.
Using the COMPASS Interactive Map
St. Croix County also runs a second mapping tool called COMPASS, built on ArcGIS. It displays the same core land records and assessment data as Beacon but adds zoning and permit information through a different interface.2St. Croix County, WI. Maps, GIS and Land Information If you want to check whether a building permit was pulled on a property or see zoning designations, COMPASS is the better choice. To reach permit records in COMPASS, look for the Laserfiche – Documents checkbox in the Table of Contents panel.
COMPASS also carries a floodplain layer. The county’s flooding resources page directs residents to select the “Floodplain & Base Flood Elevation” option from the COMPASS layer list to see which areas fall within mapped flood zones.4St. Croix County, WI. Flooding Awareness and Resources This is useful when you’re evaluating a property purchase or thinking about flood insurance.
What the Map Won’t Tell You
The parcel lines on a county GIS map look precise, but they’re approximations meant for tax administration, not legal boundary determinations. GIS data is often generalized and can be off by several feet or more compared to a licensed land survey, which measures to within centimeters. If you’re building a fence, resolving a boundary disagreement with a neighbor, or preparing for construction, you need a licensed surveyor to establish your actual property lines.
When boundary disputes reach court, physical monuments on the ground carry the most weight, followed by the courses and distances described in the deed, with total acreage considered last. County assessor maps can be admitted as evidence but sit well below a certified land survey. If the GIS map and a licensed survey disagree, the survey controls.
Wisconsin’s assessor’s plat statute does allow governing bodies to order formal plats when existing property descriptions aren’t accurate enough for assessment and taxation. Once recorded with the Register of Deeds, an assessor’s plat becomes the reference standard for describing and conveying those parcels.5Wisconsin State Legislature. Wisconsin Code 70 – Assessors Plat The online GIS layer and a recorded assessor’s plat are different things. The GIS map is a visual tool; the recorded plat is a legal document.
If the Assessed Value Looks Wrong
If you pull up your parcel on Beacon and the assessed value seems off, Wisconsin provides a formal way to contest it. Every municipality holds an annual Open Book session, usually starting the fourth Monday in April, where you can review your assessment with the assessor informally. If that doesn’t resolve the issue, file a written objection with the Board of Review, the quasi-judicial body that makes final decisions on assessed values. You’ll need to include your own opinion of the property’s market value.
Deadlines are strict and vary by municipality. The Board of Review meets during a 45-day window that begins the fourth Monday in April, and your written objection must be filed before the Board convenes. Miss the filing deadline and you wait until the next assessment cycle. The process is governed by Wisconsin Statutes Section 70.47, and your municipal clerk’s office can confirm the exact dates for your jurisdiction.
Contacting the Land Information Office
For anything the online maps can’t answer, contact the St. Croix County Land Information Office directly. The office is at the St. Croix County Government Center, 1101 Carmichael Road, Hudson, WI 54016. The main county phone number is 715-386-4600. Staff can help with parcel history, mapping discrepancies, or data that hasn’t yet appeared online. If a recent subdivision, lot consolidation, or ownership transfer isn’t showing up on Beacon or COMPASS, start there.