Winnebago County property record for 525 High Ave, Oshkosh, WI 54901
| Property Type | Duplex |
|---|---|
| Details | 5 bd · 2 ba · 1,872 sqft · built 1920 |
| Lot Size | 0.154 acres (6,726 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $3,537 (2024) |
| Deeds & Mortgages | Oct 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 01-03200000 |
| Primary APN | 01-03200000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 1,872 sqft Living Area |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 6,726 sqft (0.154 acres) |
| Lot Dimensions | 118 ft deep x 57 ft wide |
| Heating System | HVAC |
|---|---|
| Heating Fuel | Gas |
| Account Number | 901-03200000 |
|---|---|
| Street Address | 525 HIGH AVE |
| City | OSHKOSH |
| State | WI |
| Zip | 54901-4710 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R5 |
| Legal Description | SE 57 FT OF LOT 6 BLK K WESTERN ADDN |
| Legal Subdivision | THE WESTERN ADDITION |
| Legal Block | K |
| Legal Lot Number | 6 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 501 |
525 High Ave, a duplex, is owned by an individual.
Source: Winnebago County records, as of May 27, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 5156 REYNOLDS AVE, WAUNAKEE, WI 53597-9151 |
| 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 | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WINNEBAGO WI |
| Property Address | 525 HIGH AVE, OSHKOSH, WI 54901-4710 |
| Transaction Type | Mortgage |
| Record Updated | Jun 26, 2023 |
| Name | Verified Name |
|---|---|
| Investor | Possibly a Property Investor |
| Document Number | 0001865141 |
|---|---|
| Date | Oct 7, 2021 |
| Instrument | 1865141 |
| Name | CAPITOL BANK |
|---|---|
| Type | Bank |
| Address | MADISON, WI 53717 |
| Amount | Amount on Record |
|---|---|
| Term | 60 Months |
| Due | Oct 5, 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 | $187,100 Land $27,800 Building $159,300 | ||
| 2024 | $3,537.00 (+27.37%) | ||
| 2023 | $2,777.00 (+1.09%) | $93,700 (-) Land $18,500 Building $75,200 | $135,399 Land $26,733 Building $108,666 |
| 2022 | $2,747.00 | $93,700 Land $18,500 Building $75,200 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 525 High Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective March 26, 2019 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
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 525 High Ave 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 | 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 294 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 8,000 / 8,000 |
| 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 DSL · Fiber in parts of the area | 100 / 20 |
May also be available: T-Mobile.
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