Winnebago County property record for 525 Oak St, Oshkosh, WI 54901
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,736 sqft · built 1895 |
| Lot Size | 0.185 acres (8,040 sqft) |
| Owner | Company Name on File |
| Tax Bill | $3,220 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 11-02900000 |
| Primary APN | 11-02900000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 1,736 sqft Living Area |
| Year Built | Built 1895 |
|---|---|
| Effective Year Built | Effective 1895 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 8,040 sqft (0.185 acres) |
| Lot Dimensions | 134 ft deep x 60 ft wide |
| Garage Type | Detached |
| Garage Area | 624 sqft |
| Heating System | HVAC |
|---|---|
| Heating Fuel | Gas |
| Account Number | 911-02900000 |
|---|---|
| Street Address | 525 OAK ST |
| City | OSHKOSH |
| State | WI |
| Zip | 54901-4620 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R2 |
| Legal Description | LOT 4 BLK 66 EVANS 3RD ADDN |
| Legal Subdivision | BLK 66 EVANS 3RD ADDN |
| Legal Block | 66 |
| Legal Lot Number | 4 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 200 |
525 Oak St, a duplex, is owned by a company that acquired it in June 2019.
Source: Winnebago County records, as of May 27, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 531 OAK ST, OSHKOSH, WI 54901-4620 |
| Owner Type | Company |
| Vesting | Borrower in Default |
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 | Name on Deed |
|---|---|
| Last Transfer Date | Jun 19, 2019 |
| Transfer Doc | 0001794591 |
| Record Updated | Sep 20, 2026 |
Source: Winnebago County assessment roll, as of May 27, 2026
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Winnebago County |
| Municipality | Oshkosh City |
| Unified School District | Oshkosh Area School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $165,900 (-) Land $30,100 Building $135,800 | ||
| 2024 | $3,220.00 (+18.69%) | $165,900 (+87.25%) Land $30,100 Building $135,800 | |
| 2023 | $2,713.00 (+0.86%) | $88,600 (-) Land $18,800 Building $69,800 | $128,029 Land $27,166 Building $100,863 |
| 2022 | $2,690.00 | $88,600 Land $18,800 Building $69,800 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 525 Oak St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective March 26, 2019
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
No wildfire likelihood is modeled around 525 Oak St, 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 wildfire likelihood modeled here |
|---|
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 | OSHKOSH WATERWORKS serves 63,000 people · EPA ID WI4710457 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Apr 2025 |
| Lead | 6 ppb (2025) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 534 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Bertram Communications Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
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