Winnebago County property record for 890 W 20th Ave, Oshkosh, WI 54902
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 2 ba · 1,920 sqft · built 1969 |
| Lot Size | 0.178 acres (7,740 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $120,000 (Jan 2020) |
| Tax Bill | $4,229 (2024) |
| Flood Zone | Zone X (minimal risk) |
| APN | 14-12510000 |
| Primary APN | 14-12510000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 1,920 sqft Living Area |
| Year Built | Built 1969 |
|---|---|
| Effective Year Built | Effective 1969 |
| Architectural Style | Duplex Single |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 7,740 sqft (0.178 acres) |
| Lot Dimensions | 129 ft deep x 60 ft wide |
| Heating System | HVAC |
|---|---|
| Heating Fuel | Gas |
| Account Number | 914-12510000 |
|---|---|
| Street Address | 890 W 20TH AVE |
| City | OSHKOSH |
| State | WI |
| Zip | 54902-6767 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R3 |
| Legal Description | LOT 10 BLK B JOHN C FABRYCKI PLAT |
| Legal Subdivision | BLK B JOHN C FABRYCKI PLAT |
| Legal Block | B |
| Legal Lot Number | 10 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 3 |
| Census Block | 3020 |
| Census Tract | 1400 |
890 W 20th Ave, a duplex, is owned by two individuals who bought it in January 2020.
Source: Winnebago County records, as of May 27, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4395 SWALLOW BANKS LN, OSHKOSH, WI 54904-9349 |
| Owner Type | Individual |
| Vesting | Survivorship Marital Property |
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 | Jan 2, 2020 · Amount on File |
| Deed Sale | Jan 2, 2020 · Amount on File |
| Deed Document Number | 20201807071 |
| 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 | $223,700 Land $23,300 Building $200,400 | ||
| 2024 | $4,229.00 (+10.16%) | ||
| 2023 | $3,839.00 (+1.11%) | $129,400 (-) Land $17,300 Building $112,100 | $186,986 Land $24,999 Building $161,987 |
| 2022 | $3,797.00 | $129,400 Land $17,300 Building $112,100 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 890 W 20th Ave in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 890 W 20th Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 94% of Wisconsin |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 305 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 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 |
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