La Crosse County property record for W5821 Koss Rd, Onalaska, WI 54650
| Property Type | Single Family Home |
|---|---|
| Lot Size | 1.8 acres (78,844 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,396 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 010-000733-003 |
| Primary APN | 010-000733-003 |
|---|---|
| Alternative APNs |
|
| Lot Area | 78,844 sqft (1.8 acres) |
|---|
| Account Number | 13957 |
|---|---|
| Old Parcel Number | 10 733 3 |
| Street Address | W5821 KOSS RD |
| City | ONALASKA |
| State | WI |
| Zip | 54650-8834 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RURAL |
| Legal Description | PRT NW-SE COM SW COR S89D31ME 912.94FT TO POB S89D31ME 180FT N8MW 439.82FT S89D52MW 180FT S8ME 437.89FT TO POB |
| Legal Range | 07 |
| Legal Township | 17 |
| Legal Section | 27 |
| Legal Quarter | NW |
| Quarter-Quarter Section | SE |
| Jurisdiction | LA CROSSE WI |
| Township / Civil Division | ONALASKA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 10401 |
W5821 Koss Rd is owned and occupied by two individuals who acquired it in March 1979.
Source: La Crosse County records, as of February 16, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Co-owner | Co-owner on File |
| Mailing Address | W5821 KOSS RD, ONALASKA, WI 54650-8834 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 9, 1979 |
| Deed Sale | Mar 9, 1979 |
| Deed Document Number | 893396 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for W5821 Koss Rd was $2,396 with a homeowner's exemption.
Source: La Crosse County assessment roll, as of January 1, 2025
| Type | Name |
|---|---|
| State | Wisconsin |
| County | La Crosse County |
| County Subdivision | Onalaska Town |
| Unified School District | Holmen School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,396.00 Homeowner's exemption | $164,100 Land $43,100 Building $121,000 | $274,100 |
| 2023 | $2,486.00 Homeowner's exemption | $164,100 Land $43,100 Building $121,000 | $164,100 Land $43,100 Building $121,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place W5821 Koss Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2019.
Source: FEMA National Flood Hazard Layer, effective February 3, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 1 (2019) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Mar 2019 · rainfall accumulation |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around W5821 Koss Rd is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 57% of Wisconsin |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: FCC Broadband Data Collection, based on 13 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable | 1,000 / 1,000 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 25 / 3 |
| Brightspeed DSL | 10 / 1 |
4G LTE (outdoors only), no 5G reported
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