La Crosse County property record for 518 Oak Ave S, Onalaska, WI 54650
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.18 acres (7,841 sqft) |
| Owner | Individual Name on File |
| Last Sale | $154,000 (Aug 2023) |
| Tax Bill | $2,139 (2025) |
| Deeds & Mortgages | Nov 2008 Mortgage Dec 2025 Mortgage + 2 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 018-000189-000 |
| Primary APN | 018-000189-000 |
|---|---|
| Alternative APNs |
|
| Lot Area | 7,841 sqft (0.18 acres) |
|---|---|
| Lot Dimensions | 95 ft deep x 86 ft wide |
| Account Number | 40274 |
|---|---|
| Old Parcel Number | 18 189 0 |
| Street Address | 518 OAK AVE S |
| City | ONALASKA |
| State | WI |
| Zip | 54650-3250 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | ORIGINAL TOWN OF ONALASKA LOT 10 & S1/2 LOT 11 & PRT LOT 9 BEG NW COR E ALG NLY LN TO NE COR SLY 11FT SWLY 84.9FT TO POB BLOC |
| Legal Range | 07 |
| Legal Township | 16 |
| Legal Section | 08 |
| Legal Quarter | SE |
| Quarter-Quarter Section | NE |
| Legal Block | 23 |
| Legal Lot Number | 9-11 |
| Jurisdiction | LA CROSSE WI |
| Township / Civil Division | ONALASKA |
| Census Block Group | 4 |
| Census Block | 4034 |
| Census Tract | 10500 |
518 Oak Ave S is owned and occupied by an individual who bought it in August 2023.
Source: La Crosse County records, as of February 16, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Co-owner | Co-owner on File |
| Mailing Address | 518 OAK AVE S, ONALASKA, WI 54650-3250 |
| 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.
| Date | Document |
|---|---|
| Nov 12, 2008 | Deed of Trust, Mortgage CITIZENS STATE BANK |
| Dec 22, 2025 | Deed of Trust, Mortgage · Conventional Mortgage DEERWOOD BANK |
| Jan 19, 2012 | Deed of Trust, Mortgage US BANK NA |
| Aug 31, 2023 | Warranty Deed, Transfer · Conventional Mortgage PROSPERITY HOME MORTGAGE |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 31, 2023 · Amount on File |
| Deed Sale | Aug 31, 2023 · Amount on File |
| Deed Document Number | 1811732 |
| Record Updated | Jun 8, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LA CROSSE WI |
| Property Address | 518 OAK AVE S, ONALASKA, WI 54650-3250 |
| Transaction Type | Mortgage |
| Record Updated | Apr 3, 2026 |
| Name | Verified Name |
|---|
| Document Number | 0001512640 |
|---|---|
| Date | Nov 12, 2008 |
| Instrument | 1512640 |
| Name | CITIZENS STATE BANK |
|---|---|
| Type | Bank |
| Address | ONALASKA, WI 54650 |
| Amount | Amount on Record |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LA CROSSE WI |
| Property Address | 518 OAK AVE S, ONALASKA, WI 54650-3250 |
| Transaction Type | Mortgage |
| Record Updated | Apr 3, 2026 |
| Name | Verified Name |
|---|
| Document Number | 0001842945 |
|---|---|
| Date | Dec 22, 2025 |
| Instrument | 1842945 |
| Name | DEERWOOD BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 372 Months |
| Due | Jan 1, 2056 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LA CROSSE WI |
| Property Address | 518 OAK AVE S, ONALASKA, WI 54650-3250 |
| Transaction Type | Mortgage |
| Record Updated | Apr 3, 2026 |
| Name | Verified Name |
|---|
| Document Number | 0001589178 |
|---|---|
| Date | Jan 19, 2012 |
| Instrument | 1589178 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | OSHKOSH, WI 54901 |
| Amount | Amount on Record |
|---|
| Document Type | Warranty Deed |
|---|---|
| Jurisdiction | LA CROSSE WI |
| Recording Date | Aug 31, 2023 |
| Property Address | 518 OAK AVE S, ONALASKA, WI 54650-3250 |
| Document Number | 0001811732 |
| Instrument Date | Aug 31, 2023 |
| Instrument | 1811732 |
| Transaction Type | Transfer |
| Record Updated | Apr 3, 2026 |
| Title Company | NEW CASTLE TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $462.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
| Document Number | 0001811733 |
|---|---|
| Date | Aug 31, 2023 |
| Instrument | 1811733 |
| Name | PROSPERITY HOME MORTGAGE |
|---|
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2053 |
The 2025 property tax bill for 518 Oak Ave S was $2,139.
Source: La Crosse County assessment roll, as of January 1, 2025
| Type | Name |
|---|---|
| State | Wisconsin |
| County | La Crosse County |
| Municipality | Onalaska City |
| Unified School District | Onalaska School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,139.00 | $159,500 Land $54,900 Building $104,600 | $161,300 |
| 2023 | $2,061.00 (+4.25%) | $122,100 (-) Land $39,200 Building $82,900 | $122,100 (-) Land $39,200 Building $82,900 |
| 2022 | $1,977.00 | $122,100 Land $39,200 Building $82,900 | $122,100 Land $39,200 Building $82,900 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 518 Oak Ave S in Zone X, an area of minimal flood risk, though there have been 3 flood claims nearby since 1997.
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 Claims | 3 (1997–2004) |
| Most Recent Claim | Aug 2004 · river or lake flooding |
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.
The area around 518 Oak Ave S has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | ONALASKA WATERWORKS serves 18,000 people · EPA ID WI6320327 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Dec 2023 |
| Lead | Under 1 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 243 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 8,000 / 8,000 |
| Brightspeed Fiber | 2,000 / 2,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
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