Winnebago County property record for 320 Prospect Ave, Oshkosh, WI 54901
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,958 sqft · built 1920 |
| Lot Size | 0.244 acres (10,620 sqft) |
| Owner | Company Name on Record |
| Last Sale | $26,000 (Nov 2013) |
| Tax Bill | $4,846 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 10-08390000 |
| Primary APN | 10-08390000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 1,958 sqft Living Area |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 10,620 sqft (0.244 acres) |
| Lot Dimensions | 177 ft deep x 60 ft wide |
| Heating System | HVAC |
|---|---|
| Heating Fuel | Gas |
| Account Number | 910-08390000 |
|---|---|
| Street Address | 320 PROSPECT AVE |
| City | OSHKOSH |
| State | WI |
| Zip | 54901-3729 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R2 |
| Legal Description | S 177 FT OF LOT 5 BLK 104 LEACHS MAP |
| Legal Subdivision | TENTH WARD |
| Legal Block | 104 |
| Legal Lot Number | 5 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 502 |
Source: Winnebago County records, as of May 27, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 1211 OSHKOSH AVE, OSHKOSH, WI 54902-2630 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 8, 2013 · Amount on Record |
| Deed Sale | Nov 8, 2013 · Amount on Record |
| Deed Document Number | 20131652284 |
| 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 | $161,200 (+98.52%) Land $27,200 Building $134,000 | ||
| 2024 | $4,846.00 (+5.12%) | ||
| 2023 | $4,610.00 (-4.54%) | $81,200 (-) Land $17,000 Building $64,200 | $117,335 Land $24,565 Building $92,770 |
| 2022 | $4,829.00 | $81,200 Land $17,000 Building $64,200 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 97.9% of Wisconsin |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 777 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| TDS Telecom Fiber | 8,000 / 8,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Bertram Communications Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures