Winnebago County property record for 843 Prospect Ave, Oshkosh, WI 54901
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 2,555 sqft · built 1929 |
| Lot Size | 0.253 acres (11,020 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $2,449 (2023) |
| Flood Zone | Zone X (minimal risk) |
| APN | 05-03860000 |
| Primary APN | 05-03860000 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,555 sqft Living Area |
| Gross Area | 4,180 sqft |
| 1st Floor Area | 1,590 sqft |
| Basement Area | 1,001 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1929 |
|---|---|
| Effective Year Built | Effective 1929 |
| Architectural Style | Old Style |
| Exterior Material | Wood |
| Roof Material | Other |
| Lot Area | 11,020 sqft (0.253 acres) |
| Lot Dimensions | 134 ft deep x 52 ft wide |
| Garage Type | Detached |
| Garage Area | 672 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Sewer | Connected |
| Account Number | 905-03860000 |
|---|---|
| Street Address | 339 9TH ST |
| City | NEENAH |
| State | WI |
| Zip | 54956-2810 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | ASSESSORS PLAT OF PT OF 5TH WAR D E OF 5TH ST W 175 FT OF LOT 7 6 PLAT OF FAIR OAKS & W 175 FT OF N 37.4 FT OF LOT 1 BLK 8 |
| Legal Subdivision | ASSESSORS PLAT OF PT OF 5TH WAR D |
| Legal Block | 44 |
| Legal Lot Number | 7 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 700 |
843 Prospect Ave, a single family home, is held in a trust.
Source: Winnebago County records, as of May 27, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 339 9TH ST, NEENAH, WI 54956-2810 |
| Owner Type | Company |
| Vesting | Trust |
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 |
|---|---|
| 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 | $285,500 Land $35,500 Building $250,000 | ||
| 2023 | $2,449.00 (+1.07%) | $82,700 (-) Land $18,900 Building $63,800 | $119,503 Land $27,311 Building $92,192 |
| 2022 | $2,423.00 | $82,700 Land $18,900 Building $63,800 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 843 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 843 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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