Winnebago County property record for 817 Prospect Ave, Oshkosh, WI 54901
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,536 sqft · built 1920 |
| Lot Size | 0.157 acres (6,834 sqft) |
| Owner | Company Name on File |
| Tax Bill | $3,294 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 05-03910000 |
| Primary APN | 05-03910000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,536 sqft Living Area |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 6,834 sqft (0.157 acres) |
| Lot Dimensions | 134 ft deep x 51 ft wide |
| Garage Type | Detached |
| Garage Area | 440 sqft |
| Heating System | HVAC |
|---|
| Account Number | 905-03910000 |
|---|---|
| Street Address | 817 PROSPECT AVE |
| City | OSHKOSH |
| State | WI |
| Zip | 54901-3615 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R2 |
| Legal Description | LOT 137 CITY REPLAT #1 |
| Legal Subdivision | CITYS REP #1 |
| Legal Lot Number | 137 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 700 |
Source: Winnebago County assessment roll, 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 File |
|---|---|
| Mailing Address | 3366 HARBOR BAY RD, OSHKOSH, WI 54901-1405 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| 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 | $176,100 (+68.19%) Land $28,100 Building $148,000 | ||
| 2024 | $3,294.00 (+7.33%) | ||
| 2023 | $3,069.00 (+1.09%) | $104,700 (-) Land $18,700 Building $86,000 | $151,294 Land $27,022 Building $124,272 |
| 2022 | $3,036.00 | $104,700 Land $18,700 Building $86,000 |
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
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 478 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 Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
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