Winnebago County property record for 803 Prospect Ave, Oshkosh, WI 54901
| Property Type | Single Family Home |
|---|---|
| Details | 8 bd · 5 ba · 7,442 sqft · built 1900 |
| Lot Size | 0.975 acres (42,448 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $65,000 (May 2009) |
| Tax Bill | $3,679 (2023) |
| Deeds & Mortgages | Jan 2024 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 05-03940000 |
| Primary APN | 05-03940000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 8 Beds |
|---|---|
| Full Baths | 5 Baths |
| Half Baths | 2 Half Baths |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 7,442 sqft Living Area |
| Gross Area | 10,299 sqft |
| 1st Floor Area | 2,887 sqft |
| Basement Area | 2,857 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1900 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Mansion |
| Exterior Material | Wood |
| Roof Material | Other |
| Lot Area | 42,448 sqft (0.975 acres) |
| Lot Dimensions | 133 ft deep x 50 ft wide |
| Cooling System | HVAC |
|---|---|
| Heating System | Hot Water |
| Heating Fuel | Gas |
| Sewer | Connected |
| Account Number | 905-03940000 |
|---|---|
| Street Address | 1010 E FOREST AVE |
| City | NEENAH |
| State | WI |
| Zip | 54956-2904 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT 3 CERT SUR MAP # 2031 DOC # 724716 |
| Legal Subdivision | CERTIFIED SURV MAP 2031 |
| Legal Lot Number | 3 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 700 |
803 Prospect Ave is owned and occupied by two individuals who bought it in May 2009.
Source: Winnebago County records, as of May 27, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 1010 E FOREST AVE, NEENAH, WI 54956-2904 |
| 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.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 19, 2009 · Amount on File |
| Deed Sale | May 19, 2009 · Amount on File |
| Deed Document Number | 20091506001 |
| Record Updated | Sep 20, 2026 |
| Document Type | Transfer on Death Deed |
|---|---|
| Jurisdiction | WINNEBAGO WI |
| Recording Date | Jan 17, 2024 |
| Property Address | 803 PROSPECT AVE, OSHKOSH, WI 54901-3615 |
| Document Number | 0001916563 |
| Instrument Date | Aug 15, 2023 |
| Instrument | 1916563 |
| Transaction Type | Transfer |
| Record Updated | Feb 6, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|
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 | $1,051,500 Land $109,000 Building $942,500 | ||
| 2023 | $3,679.00 (+0.96%) | $122,900 (-) Land $18,400 Building $104,500 | $177,593 Land $26,588 Building $151,005 |
| 2022 | $3,644.00 | $122,900 Land $18,400 Building $104,500 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 803 Prospect Ave 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.
The area around 803 Prospect 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 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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