Winnebago County property record for 456 W 20th Ave, Oshkosh, WI 54902
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 1,639 sqft · built 1940 |
| Lot Size | 0.158 acres (6,901 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $3,006 (2024) |
| Deeds & Mortgages | May 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 14-09870000 |
| Primary APN | 14-09870000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,639 sqft Living Area |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Architectural Style | Cape Cod |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 6,901 sqft (0.158 acres) |
| Lot Dimensions | 103 ft deep x 67 ft wide |
| Garage Type | Detached |
| Garage Area | 360 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Heating Fuel | Gas |
| Account Number | 914-09870000 |
|---|---|
| Street Address | 456 W 20TH AVE |
| City | OSHKOSH |
| State | WI |
| Zip | 54902-6821 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | W1/2 OF LOTS 11 & 12 BLK 13 POWERS & SMITHS ADDN |
| Legal Subdivision | POWER & SMITHS ADDITION |
| Legal Block | 13 |
| Legal Lot Number | 11,12 |
| Jurisdiction | WINNEBAGO WI |
| Township / Civil Division | OSHKOSH |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 1400 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 456 W 20TH AVE, OSHKOSH, WI 54902-6821 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | May 12, 2021 |
| Transfer Doc | 0001851484 |
| Record Updated | Sep 20, 2026 |
| Document Type | Affidavit of Death of Joint Tenant |
|---|---|
| Jurisdiction | WINNEBAGO WI |
| Recording Date | May 13, 2021 |
| Property Address | 456 W 20TH AVE, OSHKOSH, WI 54902-6821 |
| Document Number | 0001851484 |
| Map Reference | VOL 556 PG 265 |
| Instrument Date | May 6, 2021 |
| Instrument | 1851484 |
| Transaction Type | Transfer |
| Record Updated | Aug 4, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 456W W 20TH AVE, OSHKOSH, WI 54902-6821 |
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 | $173,100 (-) Land $18,100 Building $155,000 | ||
| 2024 | $3,006.00 (+20.97%) | $173,100 (+81.64%) Land $18,100 Building $155,000 | |
| 2023 | $2,485.00 (-0.48%) Homeowner's exemption | $95,300 (-) Land $13,400 Building $81,900 | $137,710 Land $19,363 Building $118,347 |
| 2022 | $2,497.00 Homeowner's exemption | $95,300 Land $13,400 Building $81,900 |
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 |
| Nearby Flood Claims | 1 (2008) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jun 2008 · Severe Storms, Tornadoes, And Flooding |
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 | 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 308 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Bertram Communications Fixed Wireless | 100 / 20 |
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